Biology Assessment: Grade 10 Biology Trivia

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| By Jenny Lek
Jenny Lek
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Quizzes Created: 1 | Total Attempts: 74,944
Questions: 20 | Viewed: 74,944


Human poachers killed elephants for the ivory in the tusks, is an example of: 

Answer: Competition between two species
The given statement, "Human poachers killed elephants for the ivory in the tusks," does not suggest competition between two species. It indicates that human poachers are targeting elephants for their ivory, which implies an interaction between humans and elephants rather than two different species competing against each other.

Food is sometimes limited due to droughts. What does it cause?

Answer: Competition within species
Food limitation due to droughts can lead to competition within species. When resources are scarce, individuals of the same species must compete for the available food, which can result in a struggle for survival. This competition may involve behaviors such as fighting for food or territorial disputes. Ultimately, only the individuals with the best characteristics or adaptations for obtaining and utilizing the limited food resources are likely to survive and reproduce, leading to an increase in the number of individuals with these favorable traits in future generations.

Over 30 years, the frequency of tusk-less elephants increased:

Answer: The number of individuals with the best characteristics increases in the future generations.
The correct answer suggests that the frequency of tusk-less elephants increased over 30 years because the number of individuals with the best characteristics increases in future generations. This implies that tusk-less elephants were better suited for their environment, allowing them to survive and reproduce more successfully than elephants with tusks. As a result, the genetic variation within the elephant population shifted towards tusk-less individuals, leading to an increase in their frequency over time. This explanation aligns with the concept of natural selection, where individuals with advantageous traits have higher chances of passing on their genes to the next generation.

Nucleic Acid controls cell activity and:

Answer: Determine Heredity and transfer energy
Nucleic acids, such as DNA and RNA, are responsible for determining heredity by carrying genetic information from one generation to the next. They contain the instructions for making proteins, which are essential for various cellular processes and functions. Additionally, nucleic acids are involved in the transfer of energy within cells through processes like ATP synthesis. Therefore, the correct answer is "Determine Heredity and transfer energy."

Both carbs and lipids:

Answer: Provide energy for the organism
Both carbohydrates and lipids are macronutrients that provide energy for the organism. Carbohydrates are the body's preferred source of energy, as they are broken down into sugars that can be readily used by cells. Lipids, on the other hand, are a concentrated source of energy and are primarily used when the body's carbohydrate stores are depleted. While both carbs and lipids can be broken down into sugars, they do not dissolve in water and their taste can vary, with carbohydrates often tasting sweet.

Carbohydrates are made of: 

Answer: Sugars
Carbohydrates are organic compounds that consist of carbon, hydrogen, and oxygen atoms. They are primarily made up of sugars, which are simple carbohydrates. Sugars are the building blocks of carbohydrates and can be found in various forms, such as glucose, fructose, and sucrose. These sugars can be further combined to form complex carbohydrates like starch and cellulose. Amino acids are the building blocks of proteins, fatty acids are components of lipids, and nucleotides are the building blocks of nucleic acids, so they are not directly involved in the composition of carbohydrates.

Lipids are made of:

Answer: Fatty acids
Lipids are organic molecules that are primarily composed of fatty acids. Fatty acids are long chains of carbon atoms with a carboxyl group at one end. They are hydrophobic in nature and are an essential component of lipids, including triglycerides, phospholipids, and cholesterol. Sugars are carbohydrates, amino acids are the building blocks of proteins, and nucleotides are the building blocks of nucleic acids. Therefore, the correct answer is fatty acids.

Nucleic acids are made of: 

Answer: Nucleotides
Nucleic acids are made up of nucleotides. Nucleotides are the building blocks of nucleic acids, such as DNA and RNA. They consist of a sugar molecule, a phosphate group, and a nitrogenous base. Sugars, fatty acids, and amino acids are not the components of nucleic acids. Sugars are carbohydrates, fatty acids are components of lipids, and amino acids are the building blocks of proteins. Therefore, the correct answer is nucleotides.

Proteins are made of:

Answer: Amino acids
Proteins are made of amino acids. Amino acids are the building blocks of proteins and are linked together through peptide bonds to form long chains. These chains then fold into specific three-dimensional structures, which determine the protein's function. Fatty acids are components of lipids, nucleotides are the building blocks of nucleic acids, and sugars are carbohydrates. Therefore, none of these options are correct when it comes to the composition of proteins.

What is being cycled between cellular respiration and photosynthesis?

Answer: Matter and energy
Photosynthesis and cellular respiration are interconnected processes in which matter and energy is cycled. During photosynthesis, plants convert carbon dioxide and water into glucose and oxygen, utilizing energy from the sun. In cellular respiration, organisms break down glucose to release energy, producing carbon dioxide and water as byproducts. This continuous cycle of matter being converted and transformed between photosynthesis and cellular respiration ensures the flow of nutrients and energy in ecosystems.

The products of photosynthesis are:

Answer: Oxygen and glucose
During photosynthesis, plants use carbon dioxide and water to produce glucose and oxygen. This process occurs in the chloroplasts of plant cells, specifically in the presence of sunlight. The chlorophyll in the chloroplasts captures sunlight energy, which is then used to convert carbon dioxide and water into glucose. Oxygen is released as a byproduct of this reaction. Glucose is an essential energy source for plants, while oxygen is released into the atmosphere and is vital for the survival of other organisms. Therefore, the correct answer is "Oxygen and glucose."

The process of cellular respiration (select all that apply):

Answer: All organismsConverts chemical energy in food to usable energy (ATP) in all organisms
Cellular respiration is a metabolic process that occurs in all organisms, not only in animals. It is responsible for converting the chemical energy present in food into a usable form of energy called ATP (adenosine triphosphate). This process is essential for the survival and functioning of all living organisms, including plants, animals, and microorganisms. Through cellular respiration, organisms are able to extract energy from nutrients and use it for various biological processes such as growth, movement, and reproduction.

The shape of an enzyme AND therefore its function can be changed by:

Answer: PH and Temperature
The shape of an enzyme and its function can be changed by pH and temperature. Enzymes are proteins that have a specific three-dimensional shape, which is crucial for their function. pH refers to the acidity or alkalinity of the environment, and extreme pH levels can denature or alter the shape of the enzyme, rendering it ineffective. Similarly, temperature influences the kinetic energy of molecules, including enzymes. High temperatures can cause enzymes to denature, while low temperatures can slow down their activity. Therefore, both pH and temperature play a significant role in modifying the shape and function of enzymes.

Enzymes speed chemical reactions by:

Answer: Decreasing amount of energy needed to start a reaction
Enzymes speed up chemical reactions by decreasing the amount of energy needed to start a reaction. They do this by acting as catalysts, lowering the activation energy required for the reaction to occur. This allows the reaction to proceed more quickly and efficiently. Enzymes achieve this by binding to the reactant molecules and bringing them closer together, creating a favorable environment for the reaction to take place. As a result, the reaction can occur at lower temperatures and with less energy input.

Most of the cells' chemical reactions take place in: 

Answer: Cytoplasm
The cytoplasm is the fluid-filled region of a cell that contains various organelles and is the site where most of the cell's chemical reactions occur. It provides a medium for the transport and interaction of molecules, enzymes, and other cellular components necessary for metabolic processes. The nucleus is the control center of the cell and contains the cell's genetic material, but it is not where most chemical reactions occur. Vacuoles are storage structures in plant cells and do not play a significant role in chemical reactions. Centrioles are involved in cell division and do not directly participate in chemical reactions.

A prokaryotic cell does not have: 

Answer: Nuclear membrane
A prokaryotic cell does not have a nuclear membrane because prokaryotes do not have a true nucleus. Unlike eukaryotic cells, prokaryotic cells lack a distinct membrane-bound nucleus to contain their genetic material. Instead, their DNA is typically found in a region called the nucleoid, which is not enclosed by a nuclear membrane. Prokaryotic cells still have a cell membrane, cytoplasm, and ribosomes, which are essential components for their structure and function.

Diffusion is: 

Answer: Going from an area of high to low concentration
Diffusion is the process of particles moving from an area of high concentration to an area of low concentration. This occurs due to the random motion of particles, where they tend to spread out and become evenly distributed. The concentration gradient, which is the difference in concentration between two areas, drives the movement of particles in diffusion. Therefore, the correct answer is "going from an area of high to low concentration."

The percentage of a solute in a cell is 35% outside and 65% inside, so the water in the cell wall:

Answer: Move into the cell
In this scenario, water tends to move from an area of lower solute concentration to an area of higher solute concentration. Therefore, since the concentration of solute is higher inside the cell (65%), water will move into the cell to dilute the higher concentration of solute. Consequently, the water content in the cell wall would increase.

If the egg of a fly has 6 chromosomes, how many chromosomes will the body cell have?

Answer: 12
In most organisms, body cells have two sets of chromosomes, one set inherited from each parent. Since the egg of a fly has 6 chromosomes, it suggests that the fly has a haploid number of 6 chromosomes. Therefore, the body cell of the fly would have a diploid number, which is double the haploid number. Double of 6 is 12, so the body cell of the fly would have 12 chromosomes.

Mitosis is the process that:

Answer: All of the above
Mitosis is the process in which cells divide to produce new cells. It is responsible for various functions such as helping organisms grow by increasing the number of cells, producing identical cells that have the same genetic information as the parent cell, and aiding in the repair of damaged tissues or organs. Therefore, the correct answer is "all of the above" as mitosis encompasses all these functions.
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