Chapter 7 Biology Test
Chapter 7 Biology test
Questions and Answers
- 1.
Do all cells have cell respiration?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
All cells have cell respiration because it is the process by which cells convert glucose and oxygen into energy in the form of ATP. This process occurs in the mitochondria of cells and is essential for the survival and functioning of cells. Without cell respiration, cells would not be able to produce the energy needed for their various activities and processes. Therefore, it can be concluded that all cells have cell respiration.Rate this question:
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- 2.
Do all animals have cell respiration?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
All animals have cell respiration because it is a fundamental process that occurs in all living organisms, including animals. Cell respiration is the process by which cells break down glucose and convert it into energy in the form of ATP. This energy is essential for carrying out various cellular functions and maintaining the overall metabolic activities of an animal. Without cell respiration, animals would not be able to survive and perform essential life processes. Therefore, it can be concluded that all animals have cell respiration.Rate this question:
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- 3.
Do the roots of the plants do cell respiration?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
Plants have cells, and like any other living organism, their cells undergo cellular respiration. This process occurs in the roots of plants as well, where the cells break down glucose to produce energy in the form of ATP. The roots of plants require energy for various functions such as nutrient uptake, growth, and maintenance. Therefore, it can be concluded that the roots of plants do undergo cell respiration.Rate this question:
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- 4.
Photosynthesis is?
- A.
Light reactions
- B.
Converting solar energy into chemical energy
- C.
Calvin cycle
Correct Answer
B. Converting solar energy into chemical energyExplanation
Photosynthesis is the process by which plants and some other organisms convert solar energy into chemical energy. This energy is stored in the form of glucose and other organic compounds, which can be used by the organism for growth, development, and other metabolic processes. During photosynthesis, light energy is captured by chlorophyll in the chloroplasts of plant cells, and this energy is used to convert carbon dioxide and water into glucose and oxygen. This process is essential for the survival of plants and is also responsible for producing the oxygen we breathe.Rate this question:
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- 5.
Light reactions are:
- A.
Converts solar energy to chemical energy
- B.
Converts CO2 to sugars
- C.
CAM photosynethesis
Correct Answer
A. Converts solar energy to chemical energyExplanation
Light reactions in photosynthesis are the initial phase of the process where solar energy is converted into chemical energy. This energy is captured by chlorophyll molecules in the chloroplasts of plant cells, and is used to split water molecules into oxygen and hydrogen ions. The energy from sunlight is then transferred to ATP and NADPH, which are energy-rich molecules that are used in the second phase of photosynthesis, known as the Calvin cycle, to convert carbon dioxide into sugars. Therefore, the correct answer is that light reactions convert solar energy to chemical energy.Rate this question:
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- 6.
Autotrophs are?
- A.
Photosynthesis
- B.
Are organisms capable of making their own food, thus called producers (anything than can make its own food photosynthetic)
- C.
Occurs in the chloroplasts
Correct Answer
B. Are organisms capable of making their own food, thus called producers (anything than can make its own food photosynthetic)Explanation
Autotrophs are organisms that are capable of making their own food through the process of photosynthesis. They are often referred to as producers because they can produce their own food. This ability to make food is usually achieved through the presence of chloroplasts, where photosynthesis takes place. Autotrophs play a vital role in the food chain as they provide energy for other organisms.Rate this question:
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- 7.
Photographs are:
- A.
Uses energy form sunlight to make their own food
- B.
Occurs in the chloroplasts
- C.
Chemical energy
Correct Answer
A. Uses energy form sunlight to make their own foodExplanation
Photographs are organisms that use energy from sunlight to produce their own food through the process of photosynthesis. This process occurs in the chloroplasts of the cells. The sunlight provides the energy needed to convert carbon dioxide and water into glucose, a form of chemical energy that can be used by the organism for growth and survival.Rate this question:
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- 8.
Photosynthesis occurs in the chloroplasts.
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
Photosynthesis is a process that takes place in the chloroplasts of plant cells. Chloroplasts contain a pigment called chlorophyll, which captures sunlight energy and converts it into chemical energy through a series of reactions. This chemical energy is then used to convert carbon dioxide and water into glucose and oxygen. Therefore, it is correct to say that photosynthesis occurs in the chloroplasts.Rate this question:
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- 9.
Photosynthesis:
- A.
Converts energy room sun into food
- B.
Light energy is converted to chemical energy
- C.
Uses chemical energy to make sugars and occurs in the storma of chlorplasts
Correct Answer
A. Converts energy room sun into foodExplanation
The process of photosynthesis involves converting energy from the sun into food. This is achieved by converting light energy into chemical energy, which is then used to produce sugars. Photosynthesis occurs in the stroma of chloroplasts.Rate this question:
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- 10.
What are the (2) major reaction pathways of photosynthesis:
- A.
Light reaction
- B.
Dark reaction
- C.
Calvin cycle
Correct Answer(s)
A. Light reaction
B. Dark reactionExplanation
The correct answer is Light reaction and Dark reaction. Photosynthesis is a complex process that occurs in plants and some bacteria, and it involves two major reaction pathways. The light reaction, also known as the light-dependent reaction, takes place in the thylakoid membrane of the chloroplasts and requires light energy to convert water into oxygen and ATP. The dark reaction, also known as the light-independent reaction or the Calvin cycle, occurs in the stroma of the chloroplasts and uses ATP and NADPH produced in the light reaction to convert carbon dioxide into glucose. These two reactions work together to produce glucose and oxygen, which are essential for the survival of plants.Rate this question:
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- 11.
Light reaction:
- A.
Light energy is converted to chemical energy converted to chemical energy and occurs on thylakoind membrane of chloroplasts.
- B.
Uses chemical energy to make sugars and occurs in the storma of chloroplasts
- C.
Photosynthesis occurs in the chloroplast of plant leaves, cells of algae and plasma membranes of bacteria.
Correct Answer
A. Light energy is converted to chemical energy converted to chemical energy and occurs on thylakoind membrane of chloroplasts.Explanation
The light reaction of photosynthesis is the process in which light energy is converted into chemical energy. This conversion takes place on the thylakoid membrane of chloroplasts. The thylakoid membrane contains pigments such as chlorophyll that are responsible for capturing light energy. This energy is then used to power the production of ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate), which are energy-rich molecules that will be used in the next stage of photosynthesis, the Calvin cycle. Therefore, the correct answer states that light energy is converted to chemical energy on the thylakoid membrane of chloroplasts.Rate this question:
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- 12.
Dark reaction is:
- A.
Uses chemical energy to make sugars and occurs in the storma of chloroplasts
- B.
Light energy is converted to chemical energy converted to chemical energy and occurs on thylakoind membrane of chloroplasts.
- C.
Photosynthesis occurs in the chloroplast of plant leaves, cells of algae and plasma membranes of bacteria.
Correct Answer
A. Uses chemical energy to make sugars and occurs in the storma of chloroplastsExplanation
The dark reaction, also known as the Calvin cycle, is a process in photosynthesis where chemical energy, in the form of ATP and NADPH, is used to convert carbon dioxide into sugars. This reaction occurs in the stroma of chloroplasts, which is the fluid-filled region outside the thylakoid membranes. The dark reaction does not require light directly, but it relies on the products of the light-dependent reactions, such as ATP and NADPH, which are generated on the thylakoid membrane. Therefore, the correct answer states that the dark reaction uses chemical energy to make sugars and occurs in the stroma of chloroplasts.Rate this question:
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- 13.
Photosynthesis occurs in the chloroplast of plant leaves, cells of algae and plasma membranes of bacteria.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight into chemical energy to fuel their growth and survival. It takes place in specialized organelles called chloroplasts in plant leaves, the cells of algae, and the plasma membranes of bacteria. These structures contain the necessary pigments, such as chlorophyll, to capture sunlight and initiate the biochemical reactions involved in photosynthesis. Therefore, the statement that photosynthesis occurs in the chloroplast of plant leaves, cells of algae, and plasma membranes of bacteria is true.Rate this question:
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- 14.
Dark reaction is also know as the "Calvin Cycle"
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given statement is true. The dark reaction in photosynthesis is also known as the Calvin Cycle. This cycle occurs in the stroma of the chloroplasts and is responsible for converting carbon dioxide into glucose using the energy captured during the light reaction. The Calvin Cycle is a crucial part of the overall process of photosynthesis, as it helps to produce the organic molecules needed for plant growth and development.Rate this question:
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- 15.
Stoma:
- A.
Green disk stacks are thylokoid that contain choraphil
- B.
Openings at the bottom of the plant
- C.
As photosynthesis occurs takes in CO2 and releases 02
Correct Answer
B. Openings at the bottom of the plantExplanation
The correct answer is "Openings at the bottom of the plant". Stoma are small openings found on the surface of plant leaves and stems. They are surrounded by two specialized cells called guard cells. Stomata play a crucial role in gas exchange, allowing the plant to take in carbon dioxide (CO2) for photosynthesis and release oxygen (O2) as a byproduct. However, the given statement is not entirely accurate as stomata are not specifically located at the bottom of the plant, but can be found on various parts of the plant's surface.Rate this question:
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- 16.
Oxidation:
- A.
Gaining electrons
- B.
Releasing electrons
- C.
Reuses energy
Correct Answer
B. Releasing electronsExplanation
Oxidation is a chemical process in which a substance loses electrons. When a substance undergoes oxidation, it releases electrons, which are then available for other reactions or to be used as a source of energy. Therefore, the correct answer is "Releasing electrons."Rate this question:
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- 17.
Reduction:
- A.
Releasing electrons
- B.
Reuses energy
- C.
Gaining electrons
Correct Answer
C. Gaining electronsExplanation
The correct answer is "Gaining electrons." This is because reduction is a chemical reaction where an atom or molecule gains electrons, which results in a decrease in its oxidation state. In other words, it involves the addition of electrons to a substance. The given options "Releasing electrons" and "Reusing energy" do not accurately describe the process of reduction.Rate this question:
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- 18.
Exergonic:
- A.
Reuses energy
- B.
Gaining electrons
- C.
Releasing electrons
Correct Answer
A. Reuses energyExplanation
The correct answer is "Reuses energy" because exergonic reactions are those that release energy. In these reactions, the products have lower energy than the reactants, and the excess energy is often used to perform work or drive other reactions. Therefore, the term "reuses energy" accurately describes the characteristic of exergonic reactions, where energy is not lost but rather utilized for other purposes.Rate this question:
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- 19.
Endergonic:
- A.
Photosynthesis stores energy which equals enderconic reaction
- B.
Pick up hydrogen and carries it to where we the cell needs it to be
- C.
Gives you a source of energy, without light
Correct Answer
A. Photosynthesis stores energy which equals enderconic reaction -
- 20.
NADP:
- A.
Photosynthesis stores energy which equals enderconic reaction
- B.
Gives you a source of energy, without light
- C.
Pick up hydrogen and carries it to where we the cell needs it to be
Correct Answer
C. Pick up hydrogen and carries it to where we the cell needs it to beExplanation
The answer is "Pick up hydrogen and carries it to where the cell needs it to be." This is because NADP (nicotinamide adenine dinucleotide phosphate) is a coenzyme involved in photosynthesis. It acts as a carrier molecule, picking up hydrogen ions (H+) produced during the light-dependent reactions of photosynthesis and transporting them to the Calvin cycle (light-independent reactions) where they are used to convert carbon dioxide into glucose. This process helps in the production of energy-rich molecules that the cell needs for various metabolic activities.Rate this question:
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- 21.
Photosynethis uses (3) colors of light:
- A.
Blue
- B.
Red
- C.
Violate
- D.
Green
Correct Answer(s)
A. Blue
B. Red
C. Violate -
- 22.
Light comes to us in packets of energy called:
- A.
Protons
- B.
Photons
- C.
Neutrons
Correct Answer
B. PhotonsExplanation
Light comes to us in packets of energy called photons. Photons are the fundamental particles of light and are responsible for carrying electromagnetic radiation. They have zero mass and travel at the speed of light. When an atom or molecule absorbs energy, it can release this energy in the form of photons. These photons can then be detected by our eyes or other light-sensitive devices, allowing us to see and interact with the world around us.Rate this question:
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- 23.
Photosystems II and I are where the light-dependent reactions take place.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Photosystems II and I are where the light-dependent reactions take place. This statement is true. Photosystems II and I are protein complexes found in the thylakoid membrane of chloroplasts. They are responsible for capturing and absorbing light energy during photosynthesis. Photosystem II functions first and absorbs light energy to initiate the electron transport chain. Photosystem I then receives the energized electrons from Photosystem II and uses them to produce ATP and NADPH, which are essential for the light-dependent reactions of photosynthesis. Therefore, Photosystems II and I are indeed where the light-dependent reactions occur.Rate this question:
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- 24.
Light dependent reactions are:
- A.
Photysystem II: uses light energy to make ATP
- B.
Photosystem I: Uses light(chlorophyll electron) energy to form NADPH
- C.
Proton pump
Correct Answer
A. Photysystem II: uses light energy to make ATPExplanation
Photosystem II is responsible for the initial step in the light-dependent reactions of photosynthesis. It absorbs light energy and uses it to split water molecules, releasing oxygen and generating ATP through a process called photophosphorylation. This ATP will later be used in the Calvin cycle to fuel the synthesis of glucose. Therefore, the statement "Photysystem II: uses light energy to make ATP" accurately describes the role of Photosystem II in the light-dependent reactions.Rate this question:
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- 25.
Stoma is:
- A.
The opening for gas exchanges
- B.
Proton pump
- C.
Electron transport chain
Correct Answer
A. The opening for gas exchangesExplanation
The correct answer is "The opening for gas exchanges" because a stoma is a tiny pore found on the surface of leaves and stems of plants. It allows for the exchange of gases, such as carbon dioxide and oxygen, between the plant and its environment. Through the process of photosynthesis, plants take in carbon dioxide and release oxygen, and this exchange occurs through the stomata.Rate this question:
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- 26.
When water is split we get oxygen gas?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Water can be split through a process called electrolysis, where an electric current is passed through the water. During this process, water molecules are broken down into their constituent elements, hydrogen and oxygen. The hydrogen gas is collected at the cathode, while the oxygen gas is collected at the anode. Therefore, when water is split, we do indeed get oxygen gas as one of the products.Rate this question:
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- 27.
NADpH Reduction:
- A.
Calvin Cycle is the "Dark Reaction)
- B.
Supplies electrons and hydrogen's to the Calvin cycle
- C.
The Calving Cycle converts CO2 to Sugars
Correct Answer
B. Supplies electrons and hydrogen's to the Calvin cycleExplanation
The correct answer states that NADPH reduction supplies electrons and hydrogens to the Calvin cycle. This is accurate because NADPH is a molecule that carries high-energy electrons and hydrogen ions. During the Calvin cycle, these electrons and hydrogens are used to convert carbon dioxide into sugars through a series of enzyme-catalyzed reactions. Therefore, NADPH reduction plays a crucial role in providing the necessary reducing power for the synthesis of sugars during the Calvin cycle.Rate this question:
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- 28.
The Calving Cycle converts C02 to Sugars:
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the calving cycle refers to the process in which icebergs break off from glaciers and enter the ocean. During this process, large amounts of carbon dioxide (CO2) are trapped within the ice. Once the ice melts in the ocean, the CO2 is released and can be used by marine plants, such as phytoplankton, to carry out photosynthesis. Through photosynthesis, these plants convert CO2 into sugars, which are essential for their growth and survival. Therefore, the calving cycle indirectly contributes to the conversion of CO2 into sugars.Rate this question:
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- 29.
Light Independent Reaction needs:
- A.
C02,ATP, NADPH
- B.
G3P(Sugar) Output
- C.
Pre-Cursor to glucose
Correct Answer
A. C02,ATP, NADPHExplanation
The light-independent reaction, also known as the Calvin cycle, is a process in photosynthesis that occurs in the stroma of the chloroplast. It requires carbon dioxide (CO2), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH) as inputs. During this reaction, CO2 is fixed and converted into a three-carbon molecule called G3P, which is then used to produce glucose and other organic compounds. Therefore, the correct answer is CO2, ATP, and NADPH, as these are the essential components needed for the light-independent reaction to occur and produce G3P, which serves as a precursor to glucose.Rate this question:
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- 30.
Light Dependent and Light-independent all occurs in the Chloroplast:
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because both light-dependent and light-independent reactions occur in the chloroplast. The light-dependent reactions take place in the thylakoid membrane of the chloroplast and require sunlight to convert light energy into chemical energy in the form of ATP and NADPH. These energy-rich molecules are then used in the light-independent reactions, also known as the Calvin cycle, which occur in the stroma of the chloroplast. In the Calvin cycle, carbon dioxide is fixed and converted into glucose with the help of ATP and NADPH produced in the light-dependent reactions. Therefore, both types of reactions occur within the chloroplast.Rate this question:
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