Bio 5

21問 • 1年前

問題一覧

The light reactions occur in the __________ of the chloroplast, while the Calvin cycle occurs in the ________ of the chloroplast.

Thylakoid, Stroma

In the light reactions of photosynthesis, hydrogen ions are pumped from the stroma (low concentration) to the thylakoid space (high concentration). Because the hydrogen ions are moving from a low concentration to a high concentration, this is an example of active transport. Active transport requires energy. What is the source of energy for this example?

Energy released from an excited electron being passed down a protein chain

In the light reactions, ATP is synthesized when hydrogen ions move down the concentration gradient through the enzyme ATP synthase. What type of transport is this?

Facilitated diffusion

The creation of a proton (H+) gradient is an important event in both photosynthesis and cellular respiration. In chloroplasts, protons are actively transported from the stroma, where there is a low concentration of protons, to the thylakoid interior space. The resulting concentration gradient allows for the diffusion of the protons back to the stroma through the protein complex known as ATP synthase. This allows for the building of ATP from ADP and inorganic phosphate. Which of the following statements accurately describe the events that occur in the chloroplast?

The movement of protons from the stroma to the thylakoid interior space goes against a concentration gradient

The creation of a proton (H+) gradient is an important event in both photosynthesis and cellular respiration. In chloroplasts, protons are actively transported from the stroma, where there is a low concentration of protons, to the thylakoid interior space. The resulting concentration gradient allows for the diffusion of the protons back to the stroma through the protein complex known as ATP synthase. This allows for the building of ATP from ADP and inorganic phosphate. Which of the following statements are true? I. Pumping of protons into the thylakoid interior space requires ATP II. The movement of protons back through ATP synthase would be considered facilitated diffusion III. The movement of protons back through ATP synthase requires ATP

I and II

The creation of a proton (H+) gradient is an important event in both photosynthesis and cellular respiration. In chloroplasts, protons are actively transported from the stroma, where there is a low concentration of protons, to the thylakoid interior space. The resulting concentration gradient allows for the diffusion of the protons back to the stroma through the protein complex known as ATP synthase. This allows for the building of ATP from ADP and inorganic phosphate. The splitting of a water molecule into molecular oxygen is a result of light hitting photosystem II. Oxygen gas is important for cellular respiration in all aerobic organisms. Oxygen gas is able to leave the chloroplast and plant cell through what process?

simple diffusion, which does not require energy usage

The cell cycle is a highly regulated series of events that characterize how a cell functions, grows and eventually divides. Within the cell cycle, proper chromosome duplication and faithful passing on to daughter cells is essential to ensure the next generation of cells function properly. Missteps along the pathway can lead to abnormal cell growth and cancer, which can have dire consequences for the organism. Consider the images of the onion root tip during different stages. What statements properly matches images A, C and E with the most likely stage of the cell cycle they are in?

A is interphase, C is metaphase and E is telophase.

B would be S phase because the total DNA content has doubled

The cell cycle is a highly regulated series of events that characterize how a cell functions, grows and eventually divides. Within the cell cycle, proper chromosome duplication and faithful passing on to daughter cells is essential to ensure the next generation of cells function properly. Missteps along the pathway can lead to abnormal cell growth and cancer, which can have dire consequences for the organism. Consider the following statements: I. Cell growth has limitations II. Cells with a small surface area to volume ratio are optimal III. Smaller cells have a larger surface area to volume ratio IV. Smaller cells are less efficient at transport of materials in and out of the cell Which of the above statements are true?

I and III

According to the model of photosynthesis above, which situation(s) will likely lead to larger production of oxygen from plants? I. Sunny Days II. A drought III. Herbicide to decrease weeds IV. Use of pesticides on plants and trees

Imagine it is summer. There is a drought. How will the summer drought affect photosynthesis?

Water will be a limiting reactant. As a result, less glucose will be produced. There will be less CO2 taken in and less O2 released out.

During photosynthesis, sugar C6H12O6 is produced from carbon dioxide, water, and sunlight. Which statement BEST explains what happens during photosynthesis?

Atoms of compounds are rearranged to form new compounds.

A cell with 1% solute concentration is placed in a beaker with a 5% solute concentration. What will happen to this cell over time?

The cell will lose H2O and shrink.

The process of photosynthesis can be represented by the chemical formula

6CO2 +6H2O → C6H12O6 + 6O2

Recall the three tenets of the cell theory. Which of these statements can be used to determine that viruses are non-living?

are not composed of cells.

The overall equation for cellular respiration is

oxygen + glucose --> water + carbon dioxide + ATP

The main difference between aerobic and anaerobic respiration is

anaerobic respiration does not require oxygen and takes place in the cytoplasm

The most ATP is produced during

aerobic respiration

A diagram of a mitochondrion is provided. The steps of aerobic cellular respiration include: glycolysis, Krebs cycle, and the electron transport chain (ETC). Which of the following answer choices has the correct locations of each of these steps in the correct order?

Cytoplasm, matrix, cristae

Heterotrophs take in mass in the form of food. Food is either used to build molecules within the body or as fuel for cellular respiration. If used for cellular respiration, this mass will eventually be converted into carbon dioxide, _________, and ____________.

Water, energy (ATP)

Based on the illustration, what happens to most of the mass gained by the plant cell through photosynthesis?

The mass produced by the photosynthesis reaction is used by the plant to fuel respiration and is turned into carbon dioxide, water, and energy.

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ユーザ名非公開 · 24問 · 11ヶ月前

bio 13

24問 • 11ヶ月前

ユーザ名非公開

問題一覧

The light reactions occur in the __________ of the chloroplast, while the Calvin cycle occurs in the ________ of the chloroplast.

Thylakoid, Stroma

Energy released from an excited electron being passed down a protein chain

In the light reactions, ATP is synthesized when hydrogen ions move down the concentration gradient through the enzyme ATP synthase. What type of transport is this?

Facilitated diffusion

The movement of protons from the stroma to the thylakoid interior space goes against a concentration gradient

The creation of a proton (H+) gradient is an important event in both photosynthesis and cellular respiration. In chloroplasts, protons are actively transported from the stroma, where there is a low concentration of protons, to the thylakoid interior space. The resulting concentration gradient allows for the diffusion of the protons back to the stroma through the protein complex known as ATP synthase. This allows for the building of ATP from ADP and inorganic phosphate. Which of the following statements are true? I. Pumping of protons into the thylakoid interior space requires ATP II. The movement of protons back through ATP synthase would be considered facilitated diffusion III. The movement of protons back through ATP synthase requires ATP

I and II

The creation of a proton (H+) gradient is an important event in both photosynthesis and cellular respiration. In chloroplasts, protons are actively transported from the stroma, where there is a low concentration of protons, to the thylakoid interior space. The resulting concentration gradient allows for the diffusion of the protons back to the stroma through the protein complex known as ATP synthase. This allows for the building of ATP from ADP and inorganic phosphate. The splitting of a water molecule into molecular oxygen is a result of light hitting photosystem II. Oxygen gas is important for cellular respiration in all aerobic organisms. Oxygen gas is able to leave the chloroplast and plant cell through what process?

simple diffusion, which does not require energy usage

A is interphase, C is metaphase and E is telophase.

B would be S phase because the total DNA content has doubled

The cell cycle is a highly regulated series of events that characterize how a cell functions, grows and eventually divides. Within the cell cycle, proper chromosome duplication and faithful passing on to daughter cells is essential to ensure the next generation of cells function properly. Missteps along the pathway can lead to abnormal cell growth and cancer, which can have dire consequences for the organism. Consider the following statements: I. Cell growth has limitations II. Cells with a small surface area to volume ratio are optimal III. Smaller cells have a larger surface area to volume ratio IV. Smaller cells are less efficient at transport of materials in and out of the cell Which of the above statements are true?

I and III

Imagine it is summer. There is a drought. How will the summer drought affect photosynthesis?

Water will be a limiting reactant. As a result, less glucose will be produced. There will be less CO2 taken in and less O2 released out.

During photosynthesis, sugar C6H12O6 is produced from carbon dioxide, water, and sunlight. Which statement BEST explains what happens during photosynthesis?

Atoms of compounds are rearranged to form new compounds.

A cell with 1% solute concentration is placed in a beaker with a 5% solute concentration. What will happen to this cell over time?

The cell will lose H2O and shrink.

The process of photosynthesis can be represented by the chemical formula

6CO2 +6H2O → C6H12O6 + 6O2

Recall the three tenets of the cell theory. Which of these statements can be used to determine that viruses are non-living?

are not composed of cells.

The overall equation for cellular respiration is

oxygen + glucose --> water + carbon dioxide + ATP

The main difference between aerobic and anaerobic respiration is

anaerobic respiration does not require oxygen and takes place in the cytoplasm

The most ATP is produced during

aerobic respiration

Cytoplasm, matrix, cristae

Water, energy (ATP)

Based on the illustration, what happens to most of the mass gained by the plant cell through photosynthesis?

The mass produced by the photosynthesis reaction is used by the plant to fuel respiration and is turned into carbon dioxide, water, and energy.