Bio Semester 1 Review (1 Of 3)

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| By Justin Lovrien

Justin Lovrien

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Quizzes Created: 23 | Total Attempts: 7,003

| Attempts: 330

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1/61 Questions

An acid has a pH below ______.
- 7
- 8
- 9
- 10

About This Quiz

The 'Bio Semester 1 Review (1 of 3)' quiz assesses understanding of fundamental biological and chemical concepts, including reaction equations, the greenhouse effect, and unit conversion. It's designed to enhance students' grasp of biochemistry and environmental science, crucial for academic progression in science.

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2.

A base has a ph above _____.
- 9
- 8
- 7
- 10
Correct Answer

A. 7

Explanation

A base has a pH above 7 because pH is a measure of the concentration of hydrogen ions in a solution. A pH value below 7 indicates an acidic solution, while a pH value above 7 indicates a basic solution. Therefore, a base with a pH above 7 is alkaline.

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3.

The water molecule is _________, because there is an uneven distribution of electron within the molecule.
- Uneven
- Weird
- Polar
- Strange
Correct Answer

A. Polar

Explanation

The water molecule is polar because there is an uneven distribution of electrons within the molecule. This is due to the oxygen atom being more electronegative than the hydrogen atoms, causing the oxygen to pull the shared electrons closer to itself. As a result, the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges. This polarity gives water its unique properties, such as its ability to form hydrogen bonds and its high surface tension.

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4.

Which as a positive charged particle in the nucleus
- Electron
- Proton
- Neutron
- Matter
Correct Answer

A. Proton

Explanation

Protons are positively charged particles found in the nucleus of an atom. They have a mass of approximately 1 atomic mass unit and carry a charge of +1. Electrons, on the other hand, are negatively charged particles that orbit around the nucleus. Neutrons are neutral particles with no charge. Matter refers to anything that has mass and occupies space. Therefore, the correct answer is proton, as it is the only option that fits the description of a positive charged particle in the nucleus.

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5.

The atom is made of 3 subatomic particles. The subatomic particle found in the nucleus with a positive charge is the ___________.
- Electron
- Neutron
- Proton
Correct Answer

A. Proton

Explanation

The atom is made up of three subatomic particles: electrons, neutrons, and protons. The subatomic particle found in the nucleus with a positive charge is the proton. Electrons have a negative charge and are found outside the nucleus, while neutrons have no charge and are also found in the nucleus. Protons are positively charged and are crucial in determining the element and properties of an atom.

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6.

Water is made of 1 oxygen molecule and _____ hydrogen atoms.
- 3
- 2
- 1
- 5
Correct Answer

A. 2

Explanation

Water is made of 1 oxygen molecule and 2 hydrogen atoms. This is because the chemical formula for water is H2O, which means that each water molecule consists of 2 hydrogen atoms bonded to 1 oxygen atom.

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7.

Fats and oils are examples of
- Phospholipids
- Lipids
- Energy
- Glycerol
Correct Answer

A. Lipids

Explanation

Fats and oils are examples of lipids. Lipids are a group of organic compounds that are insoluble in water but soluble in organic solvents. They are an essential part of the diet and play important roles in the body, such as providing energy, insulating and protecting organs, and serving as a structural component of cell membranes. Fats and oils are types of lipids that are commonly found in food and are a concentrated source of energy. Therefore, the correct answer is lipids.

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8.

Number of protons and neutrons in the nucleus
- Chemical elements
- Nucleic acid
- Protein
- Atomic mass
Correct Answer

A. Atomic mass

Explanation

The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. It is a measure of the mass of an atom and is usually expressed in atomic mass units (amu). The number of protons determines the element's identity, while the number of neutrons can vary, resulting in different isotopes of the same element. Therefore, the atomic mass provides information about the composition of the nucleus and helps in identifying and distinguishing different elements.

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9.

Neutron's are
- Charged particles in nucleus
- Noncharged particles in nucleus
- Component of most organic molecules and water
- A protein in catalyzes
Correct Answer

A. Noncharged particles in nucleus

Explanation

Neutrons are noncharged particles in the nucleus. Unlike protons, which have a positive charge, neutrons have no charge. They are essential components of an atom along with protons, and their main role is to add mass to the nucleus without affecting the overall charge. Neutrons help stabilize the nucleus and are crucial for maintaining the stability of an atom.

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10.

Which of the following elements is NOT found in all organic compounds?
- Carbon
- Oxygen
- Chlorine
- Hydrogen
Correct Answer

A. Chlorine

Explanation

Chlorine is not found in all organic compounds because organic compounds are primarily composed of carbon and hydrogen atoms, with the occasional presence of oxygen. Chlorine is not a common element in organic compounds and is typically found in inorganic compounds or as a substituent in certain organic compounds. Therefore, chlorine is the element that is not found in all organic compounds.

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11.

Water is the universal ___________
- Isotope
- Solvent
- Anions
- Buffer
Correct Answer

A. Solvent

Explanation

Water is considered the universal solvent because it has the ability to dissolve a wide range of substances. This is due to its unique molecular structure, which allows it to form hydrogen bonds with other molecules. These hydrogen bonds break apart the solute particles and surround them, effectively dispersing them throughout the water. As a result, water is able to dissolve many different types of solutes, making it an excellent solvent for various chemical reactions and biological processes.

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12.

Type of symbiosis where both organisms benefit.
- Parasitism
- Commensalism
- Mutalism
- Predation
Correct Answer

A. Mutalism

Explanation

Mutualism is the type of symbiosis where both organisms benefit. In mutualistic relationships, both organisms rely on each other for survival and both receive some form of advantage or benefit. This can include cooperation in obtaining food, protection, or other resources. Unlike parasitism, where one organism benefits at the expense of the other, or predation, where one organism kills and consumes the other, mutualism is a mutually beneficial relationship between two organisms. Commensalism, on the other hand, is a type of symbiotic relationship where one organism benefits while the other is unaffected.

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13.

The number of protons in an atom of an element
- Atomic weight
- Atomic mass
- Atom
- Atomic number
Correct Answer

A. Atomic number

Explanation

The atomic number of an element represents the number of protons in an atom of that element. Protons are positively charged particles found in the nucleus of an atom. Each element has a unique atomic number, which determines its position on the periodic table. The atomic number is crucial in identifying and classifying elements, as it determines their chemical properties and the number of electrons surrounding the nucleus. Therefore, the correct answer is atomic number.

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14.

This is a molecule found in the cell wall of plants
- Glucose
- Starch
- Cellulose
- Lipids
- Enzymes
Correct Answer

A. Cellulose

Explanation

Cellulose is a molecule found in the cell wall of plants. It is a polysaccharide composed of glucose units linked together. Cellulose provides structural support to plant cells and is the most abundant organic compound on Earth. It forms long, rigid chains that are interconnected, creating a strong and stable network. This allows plants to maintain their shape and withstand mechanical stress. Unlike glucose and starch, cellulose cannot be digested by most organisms due to its complex structure and the lack of appropriate enzymes. Lipids and enzymes are not specific to the cell wall of plants, making cellulose the correct answer.

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15.

Proteins are polymers of __________.
- Nucleotides
- Hydrocarbons
- Glycerol
- Amino acids
Correct Answer

A. Amino acids

Explanation

Proteins are composed of amino acids, which are the building blocks of proteins. Amino acids are organic compounds that contain an amino group (-NH2) and a carboxyl group (-COOH). These amino acids are linked together through peptide bonds to form long chains, known as polypeptides, which then fold into complex three-dimensional structures to create proteins. Therefore, the correct answer is amino acids.

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16.

This molecule is common in the cell wall of plants:
- Glucose
- Lipids
- Starch
- Saturated Fats
- Unsaturated Fats
- Enzyme
- Cellulose
Correct Answer

A. Cellulose

Explanation

Cellulose is a molecule that is commonly found in the cell wall of plants. It is a polysaccharide made up of glucose units linked together. Cellulose provides structural support to plant cells and gives rigidity to the cell wall. It is a major component of plant fibers and is indigestible by humans due to the lack of enzymes required to break down its complex structure. Cellulose is essential for the integrity and strength of plant cell walls and plays a crucial role in plant growth and development.

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17.

The __________ is the smallest unit of matter.
- Element
- Atom
- Molecule
- Electron
Correct Answer

A. Atom

Explanation

An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus, which contains protons and neutrons, and electrons that orbit the nucleus. Elements are made up of atoms, and atoms combine to form molecules. Electrons are subatomic particles found within atoms, but they are not the smallest unit of matter. Therefore, the correct answer is atom.

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18.

Carbohydrates are mainly used in our bodies:
- Structural molecules, such as hair
- For membrane construction
- As fuel
- For building genetic material
Correct Answer

A. As fuel

Explanation

Carbohydrates are primarily used in our bodies as fuel. They are broken down into glucose, which is then used by our cells to produce energy through a process called cellular respiration. This energy is essential for various bodily functions, such as muscle contraction, nerve signaling, and overall metabolism. While carbohydrates can also play a role in structural molecules, membrane construction, and building genetic material, their primary function is to provide energy for our body's activities.

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19.

Which of these does require energy?
- Active Transport
- Passive Transport
- Osmosis
- Gravity
Correct Answer

A. Active Transport

Explanation

Active transport is the movement of molecules from an area of lower concentration to an area of higher concentration. Because this defies the law of diffusion, it takes the proteins on the membrane energy to transport molecules across.

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20.

A cell placed in a hypotonic solution will....
- Swell due to taking in water
- Shrivel due to water leaving
- Remain unchanged, as it is isotonic
- Not enough info given
Correct Answer

A. Swell due to taking in water

Explanation

When a cell is placed in a hypotonic solution, the concentration of solutes inside the cell is higher than that of the surrounding solution. As a result, water molecules move into the cell through osmosis, causing the cell to swell. This is because water moves from an area of lower solute concentration (the hypotonic solution) to an area of higher solute concentration (the cell). Therefore, the correct answer is "swell due to taking in water."

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21.

Substances whose molecules have more than one kind of atom
- Isotope
- Compound
- Chemical Elements
- Cations
Correct Answer

A. Compound

Explanation

A compound is a substance that is composed of two or more different elements chemically bonded together. In this case, the question is asking for substances whose molecules have more than one kind of atom, which perfectly describes a compound. Isotopes refer to atoms of the same element that have different numbers of neutrons, while chemical elements and cations are not specific to substances with more than one kind of atom. Therefore, the correct answer is compound.

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22.

These molecules include starch and cellulose:
- Carbohydrates
- Proteins
- Lipids
- Acids
- Bases
Correct Answer

A. Carbohydrates

Explanation

Carbohydrates are a type of organic compound that includes molecules such as starch and cellulose. Starch is a polysaccharide that serves as a storage form of energy in plants, while cellulose is a structural polysaccharide found in the cell walls of plants. Both starch and cellulose are composed of glucose monomers, which are linked together in different ways. Carbohydrates are an essential macronutrient and serve as a major source of energy for living organisms.

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23.

When put into distilled water, a red blood cell will:
- Inflate until it pops
- Stay the same
- Shrink (Crenate)
Correct Answer

A. Inflate until it pops

Explanation

Distilled water is hypotonic, and therefore has a higher concentration of water than red blood cells. Therefore, water will diffuse into the red blood cells, causing them to expand. Because the concentration of water in distilled water is 100%, water will never cease to diffuse in, because the concentration will never be equal. Thus, water will continue diffusing in until the cell pops

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24.

A group of organisms, living in the same place at the same time, and all of the same species.
- Organism
- Population
- Community
- Ecosystem
Correct Answer

A. Population

Explanation

A population refers to a group of organisms that live in the same place at the same time and are all of the same species. It specifically focuses on individuals of the same species within a given area. This term helps to describe the number, distribution, and characteristics of a particular species in a specific location.

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25.

An _______ bond is a bond in which electrons are transferred between a metal and nonmetal.
- Covalent
- Ionic
- Double
- Polar
- Nonpolar
Correct Answer

A. Ionic

Explanation

An ionic bond is a bond in which electrons are transferred between a metal and nonmetal. In an ionic bond, one atom donates electrons to another atom, resulting in the formation of positively charged cations and negatively charged anions. This transfer of electrons creates a strong electrostatic attraction between the oppositely charged ions, forming a stable bond.

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26.

This is a molecule is a catalyst:
- Glucose
- Starch
- Cellulose
- Lipids
- Enzymes
Correct Answer

A. Enzymes

Explanation

Enzymes are proteins that act as catalysts in biological reactions. They speed up chemical reactions by lowering the activation energy required for the reaction to occur. Unlike other molecules listed, enzymes are not consumed or altered during the reaction, making them reusable. Glucose, starch, cellulose, and lipids are not catalysts but rather types of carbohydrates and lipids that serve different functions in the body. Enzymes, on the other hand, play a crucial role in various metabolic processes by facilitating chemical reactions.

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27.

The Greenhouse Effect is best summarized by which of the following options?
- Warming temperatures increase carbon dioxide levels on Earth.
- Increased carbon dioxide levels in Earths atmosphere increase global temperatures.
- Increased carbon dioxide levels disrupt the ozone levels for planet Earth.
- Decreased ozone levels increase temperatures on Earth.
Correct Answer

A. Increased carbon dioxide levels in Earths atmosphere increase global temperatures.

Explanation

The Greenhouse Effect refers to the process by which certain gases in the Earth's atmosphere trap heat from the sun, leading to an increase in global temperatures. Increased carbon dioxide levels in Earth's atmosphere contribute to this effect by trapping more heat and causing a rise in temperatures. This option accurately summarizes the relationship between increased carbon dioxide levels and global temperatures in the context of the Greenhouse Effect.

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28.

Type of symbiosis where one organism benefits, the other suffers but usually doesn't die.
- Parasitism
- Commensalism
- Mutalism
- Predation
Correct Answer

A. Parasitism

Explanation

Parasitism is a type of symbiotic relationship in which one organism benefits (the parasite) while the other organism is harmed (the host), but usually does not die. The parasite relies on the host for resources and may cause damage or disease, but typically does not kill the host. This relationship is different from predation, where one organism kills and consumes another, and from mutualism and commensalism, where both organisms benefit or one benefits without harming the other.

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29.

All of these are major organic compounds except
- Carbohydrates
- Lipids
- Proteins
- Acids
Correct Answer

A. Acids

Explanation

Acids are not considered major organic compounds. While carbohydrates, lipids, and proteins are all major organic compounds found in living organisms, acids are not classified as major organic compounds. Acids are a class of compounds that are characterized by their ability to donate protons or accept electrons. They are not typically considered as major components of living organisms, unlike carbohydrates, lipids, and proteins which play essential roles in various biological processes.

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30.

Osmosis occurs in
- All cells; they all have cell membranes
- Eukaryotic cells; only they have cell membranes
- Prokaryotic cells; eukaryotic cells have more complex structures for importing materials
- Prokaryotic cells; only they have cell membranes
Correct Answer

A. All cells; they all have cell membranes

Explanation

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration. Since all cells have cell membranes, they are all capable of undergoing osmosis. The cell membrane acts as a barrier that allows the passage of water molecules while regulating the movement of solutes in and out of the cell. Therefore, osmosis can occur in all cells because they all possess cell membranes.

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31.

Large Molecules made up of amino acids held together in long folded chains by peptide bonds
- Proteins
- Starches
- Carbohydrates
- Cholesterol
Correct Answer

A. Proteins

Explanation

Proteins are large molecules composed of amino acids that are linked together by peptide bonds. These amino acids form long, folded chains, which give proteins their unique structure and function. Proteins play a crucial role in various biological processes, including cell signaling, enzymatic reactions, and structural support. They are essential for the growth, repair, and maintenance of tissues in the body. Therefore, proteins are the correct answer in this case.

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32.

Enzymes interact with substrates (such as milk) at their...
- Product site
- Active site
- Effective site
- Nonpolar site
Correct Answer

A. Active site

Explanation

Enzymes interact with substrates at their active site. The active site is a specific region on the enzyme where the substrate binds and undergoes a chemical reaction. This site has a unique shape and chemical properties that allow it to bind to the substrate and facilitate the conversion of the substrate into a product. The active site plays a crucial role in enzyme catalysis, as it provides a favorable environment for the reaction to occur and helps to lower the activation energy needed for the reaction to proceed.

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33.

These molecules make up enzymes:
- Carbohydrates
- Proteins
- Lipids
- Acids
- Bases
Correct Answer

A. Proteins

Explanation

Proteins are composed of amino acids and are the primary molecules that make up enzymes. Enzymes are biological catalysts that speed up chemical reactions in the body. They play a crucial role in various physiological processes by facilitating the conversion of substrates into products. Proteins have a specific three-dimensional structure that allows them to bind to specific substrates and catalyze reactions. Therefore, proteins are the correct answer as they are directly involved in the formation and functioning of enzymes.

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34.

These molecules are made of numerous amino acids:
- Carbohydrates
- Proteins
- Lipids
- Acids
- Bases
Correct Answer

A. Proteins

Explanation

Proteins are indeed made of numerous amino acids. Amino acids are the building blocks of proteins, and they are linked together through peptide bonds to form long chains. These chains then fold and interact with each other to create the unique three-dimensional structure of proteins. Proteins have a wide range of functions in the body, including serving as enzymes, hormones, antibodies, and structural components.

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35.

If a lipid is a solid at room temperature, you would predict
- All lipids are solids at room temperature
- The lipid is saturated
- The lipid is unsaturated
- There is not enough information
Correct Answer

A. The lipid is saturated

Explanation

If a lipid is a solid at room temperature, it indicates that the lipid is saturated. Saturated lipids have only single bonds between carbon atoms, which allows them to pack tightly together and form a solid structure. Unsaturated lipids, on the other hand, have at least one double bond between carbon atoms, which introduces a kink in the molecule and prevents tight packing, resulting in a liquid state at room temperature. Therefore, based on the given information, it can be predicted that the lipid is saturated.

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36.

Convert .75 m to cm
- .000 75
- .007 5
- 75
- 750
- 7 500
Correct Answer

A. 75

Explanation

To convert meters to centimeters, we need to multiply the value in meters by 100. In this case, we have 0.75 meters. Multiplying 0.75 by 100 gives us 75 centimeters. Therefore, the correct answer is 75.

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37.

This molecule is typical of lipids from animals, and they are commonly solid at room temperature:
- Glucose
- Lipids
- Starch
- Saturated Fats
- Unsaturated Fats
- Enzyme
- Cellulose
Correct Answer

A. Saturated Fats

Explanation

Saturated fats are typically solid at room temperature and are commonly found in animal lipids. This is because they have a higher melting point compared to unsaturated fats. Saturated fats have a straight molecular structure with single bonds between carbon atoms, allowing them to pack tightly together and solidify at room temperature. In contrast, unsaturated fats have double bonds between carbon atoms, causing them to have a bent molecular structure and remain liquid at room temperature. Therefore, saturated fats are the correct answer for this question.

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38.

A group of atoms bound together
- Proton
- Molecule
- Atom
- Compound
Correct Answer

A. Molecule

Explanation

A molecule is a group of atoms that are bound together by chemical bonds. It is the smallest unit of a compound that retains the chemical properties of that compound. In other words, a molecule is formed when two or more atoms come together and are held together by covalent bonds. This allows them to function as a single unit and exhibit unique chemical properties. Therefore, a molecule is the correct answer as it accurately describes a group of atoms bound together.

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39.

This is a molecule is an immediate source of energy for all living cells:
- Glucose
- Starch
- Cellulose
- Lipids
- Enzymes
Correct Answer

A. Glucose

Explanation

Glucose is the correct answer because it is a simple sugar that can be easily broken down through cellular respiration to release energy in the form of ATP. Glucose is the primary source of energy for cells and is used in various metabolic processes to fuel cellular activities. Starch and cellulose are complex carbohydrates that require further digestion before they can be used as an energy source. Lipids, although they can be broken down to release energy, are not as readily available as glucose. Enzymes, on the other hand, are proteins that facilitate biochemical reactions but do not directly provide energy.

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40.

These molecules primarily serve to provide the body with energy:
- Carbohydrates
- Proteins
- Lipids
- Acids
- Bases
Correct Answer

A. Carbohydrates

Explanation

Carbohydrates primarily serve to provide the body with energy. When consumed, carbohydrates are broken down into glucose, which is then used as a fuel source by the body's cells. Glucose is particularly important for the brain and muscles, as they rely heavily on this energy source. Carbohydrates can be found in foods such as grains, fruits, vegetables, and dairy products.

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41.

2 H2 + O2 -> 2 H2OIn the above reaction, how many atoms of reactants are depicted?
- 2
- 3
- 6
- 8
Correct Answer

A. 6

Explanation

In the given reaction, there are 2 molecules of H2 and 1 molecule of O2 as reactants. Each H2 molecule contains 2 atoms of hydrogen, so there are a total of 4 atoms of hydrogen. The O2 molecule contains 2 atoms of oxygen. Therefore, the total number of atoms of reactants depicted in the reaction is 4 + 2 = 6.

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42.

2 H2 + O2 -> 2 H2OIn the above reaction, what is/are the products?
- Hydrogen
- Oxygen
- Water
- Hydrogen and oxygen
Correct Answer

A. Water

Explanation

The given reaction represents the combination of two hydrogen molecules (H2) with one oxygen molecule (O2) to form two water molecules (H2O). Therefore, the product of the reaction is water.

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43.

Diffusion involves..
- Always water moving from high concentration to low
- Any molecule moving from high concentration to low
- Always water moving from low concentration to high
- Any molecule moving from low concentration to high
Correct Answer

A. Any molecule moving from high concentration to low

Explanation

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration. This movement occurs due to the random motion of molecules. Therefore, any molecule, not just water, can undergo diffusion as long as there is a concentration gradient present.

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44.

All the substances listed are Inorganic except
- Acids
- Bases
- Salts
- Proteins
Correct Answer

A. Proteins

Explanation

Acids, bases, and salts are all inorganic substances because they do not contain carbon. Proteins, on the other hand, are organic substances because they are composed of carbon, hydrogen, oxygen, and nitrogen atoms. Therefore, proteins are the only substance listed that is not inorganic.

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45.

This molecule is made of proteins:
- Glucose
- Lipids
- Starch
- Saturated Fats
- Unsaturated Fats
- Enzyme
- Cellulose
Correct Answer

A. Enzyme

Explanation

Enzymes are biological molecules made up of proteins. They act as catalysts in various biochemical reactions, speeding up the rate of these reactions without being consumed in the process. Enzymes have specific shapes that allow them to bind to specific substrates, facilitating the conversion of these substrates into products. They play a crucial role in metabolism and are essential for many physiological processes in living organisms. Therefore, the molecule "Enzyme" is correctly identified as being made up of proteins.

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46.

When a molecule enters a cell via the proteins on its membrane but the process doesn't use any ATP, it has undergone:
- Adhesion
- Osmosis
- Active transport
- Facilitated diffusion
Correct Answer

A. Facilitated diffusion

Explanation

Facilitated diffusion is the transfer of molecules from a higher concentration to lower concentration (passive transport) through the proteins on the membrane. Molecules that enter through the proteins are often too large or ionic/polar to enter straight through the phospholipid bi-layer. These are also the only molecules which can undergo active transport.

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47.

How many atoms of reactants in the above reaction?
- 6
- 12
- 36
- 54
- 86
Correct Answer

A. 54
48.

What is osmosis?
- The movement of molecules through a semi-permeable membrane from an area of lower concentration to an area of higher concentration
- The movement of molecules such as water through a semi-permeable membrane from an area of higher concentration to an area of lower concentration
- The movement of molecules across a semi-permeable membrane until there are equal amounts on each side of the membrane
- Molecules desire to spread as far from a membrane as possible
Correct Answer

A. The movement of molecules such as water through a semi-permeable membrane from an area of higher concentration to an area of lower concentration

Explanation

The correct answer is "The movement of molecules from an area of higher concentration to an area of lower concentration" because diffusion is specifically trying to equalize the percentage, or concentration, of all substances in two areas. Therefore, molecules move from a higher concentration to a lower concentration to try to balance the two out.

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49.

Which of these molecules can NOT pass through a membrane to enter a cell?
- Iodine
- Glucose
- Oxygen
- Starch
Correct Answer

A. Starch

Explanation

As we observed in the Diffusion Through a Membrane lab, starch cannot pass through a semi-permeable membrane. We know this because the solution surrounding the "cell" we constructed remained amber, instead of turning purple. Starch is too large a molecule to pass through the membrane of a cell.

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Bio Semester 1 Review (1 Of 3)

An acid has a pH below ______.

Quiz Preview

A base has a ph above _____.

The water molecule is _________, because there is an uneven distribution of electron within the molecule.

Which as a positive charged particle in the nucleus

The atom is made of 3 subatomic particles. The subatomic particle found in the nucleus with a positive charge is the ___________.

Water is made of 1 oxygen molecule and _____ hydrogen atoms.

Fats and oils are examples of

Number of protons and neutrons in the nucleus

Neutron's are

Which of the following elements is NOT found in all organic compounds?

Water is the universal ___________

Type of symbiosis where both organisms benefit.

The number of protons in an atom of an element

This is a molecule found in the cell wall of plants

Proteins are polymers of __________.

This molecule is common in the cell wall of plants:

The __________ is the smallest unit of matter.

Carbohydrates are mainly used in our bodies:

Which of these does require energy?

A cell placed in a hypotonic solution will....

Substances whose molecules have more than one kind of atom

These molecules include starch and cellulose:

When put into distilled water, a red blood cell will:

A group of organisms, living in the same place at the same time, and all of the same species.

An _______ bond is a bond in which electrons are transferred between a metal and nonmetal.

This is a molecule is a catalyst:

The Greenhouse Effect is best summarized by which of the following options?

Type of symbiosis where one organism benefits, the other suffers but usually doesn't die.

All of these are major organic compounds except

Osmosis occurs in

Large Molecules made up of amino acids held together in long folded chains by peptide bonds

Enzymes interact with substrates (such as milk) at their...

These molecules make up enzymes:

These molecules are made of numerous amino acids:

If a lipid is a solid at room temperature, you would predict

Convert .75 m to cm

This molecule is typical of lipids from animals, and they are commonly solid at room temperature:

A group of atoms bound together

This is a molecule is an immediate source of energy for all living cells:

These molecules primarily serve to provide the body with energy:

2 H2 + O2 -> 2 H2OIn the above reaction, how many atoms of reactants are depicted?

2 H2 + O2 -> 2 H2OIn the above reaction, what is/are the products?

Diffusion involves..

All the substances listed are Inorganic except

This molecule is made of proteins:

When a molecule enters a cell via the proteins on its membrane but the process doesn't use any ATP, it has undergone:

How many atoms of reactants in the above reaction?

What is osmosis?

Which of these molecules can NOT pass through a membrane to enter a cell?