{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

1

A diagram of a cell membrane shows a protein channel moving calcium ions from an area of low concentration inside the cell to an area of high concentration outside the cell. Which statement best categorizes this process and provides the correct rationale?

Active transport, because energy is required to move substances against their concentration gradient

Facilitated diffusion, because the protein channel allows the ions to bypass the lipid bilayer

Osmosis, because the movement of charged ions always follows the movement of water molecules

Passive transport, because the ions are moving through a specialized protein channel

1

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25^oC to 70^oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?

The activation energy of the reaction increased to a level that the enzyme could no longer overcome

The substrate molecules were destroyed by the heat before they could reach the enzyme

The high temperature caused the enzymes to denature, changing the shape of the active site

The enzymes were consumed by the reaction and were no longer available to catalyze the substrate.

1

A model of a plant cell shows the relationship between chloroplasts and mitochondria. Which statement correctly identifies the flow of matter between these two organelles?

Chloroplasts produce glucose and oxygen, which serves as the inputs for cellular respiration in the mitochondria

Chloroplasts release carbon dioxide and water which are used by the mitochondria to produce glucose

Mitochondria release oxygen and glucose which are used by the chloroplasts to produce ATP.

Mitochondria produce light energy which is then captured by the chloroplasts to cycle carbon

1

Muscle cells require significantly more energy than skin cells to function. Based on this requirement, which claim about the hierarchical organization of these cells is most likely correct?

Muscle cells will have larger vacuoles to store the excess ATP they produce

Muscle cells will lack a cell membrane to allow for faster energy absorption

Muscle cells will have a higher concentration of mitochondria than skin cells

Skin cells will undergo meiosis more frequently than muscle cells to save energy

1

During a period of heavy exercise, a person's body temperature rises. The brain sends signals to the skin to produce sweat, which cools the body as it evaporates. This is an example of which biological mechanism?

A negative feedback loop, because the response counteracts the stimulus to maintain homeostasis

Active transport, because heat is being moved out of the body against a gradient

Cell differentiation, because skin cells are changing their function to produce moisture

A positive feedback loop, because the body is increasing the rate of sweating

Bio ATLAS Practice Questions: Molecules to Organisms

Bio ATLAS Practice Questions: Molecules to Organisms

A diagram of a cell membrane shows a protein channel moving calcium ions from an area of low concentration inside the cell to an area of high concentration outside the cell. Which statement best categorizes this process and provides the correct rationale?

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25^oC to 70^oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?

A model of a plant cell shows the relationship between chloroplasts and mitochondria. Which statement correctly identifies the flow of matter between these two organelles?

Muscle cells require significantly more energy than skin cells to function. Based on this requirement, which claim about the hierarchical organization of these cells is most likely correct?

During a period of heavy exercise, a person's body temperature rises. The brain sends signals to the skin to produce sweat, which cools the body as it evaporates. This is an example of which biological mechanism?

A diagram of a cell membrane shows a protein channel moving calcium ions from an area of low concentration inside the cell to an area of high concentration outside the cell. Which statement best categorizes this process and provides the correct rationale?

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25^oC to 70^oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?

A model of a plant cell shows the relationship between chloroplasts and mitochondria. Which statement correctly identifies the flow of matter between these two organelles?

Muscle cells require significantly more energy than skin cells to function. Based on this requirement, which claim about the hierarchical organization of these cells is most likely correct?

During a period of heavy exercise, a person's body temperature rises. The brain sends signals to the skin to produce sweat, which cools the body as it evaporates. This is an example of which biological mechanism?

Bio ATLAS Practice Questions: Molecules to Organisms

Bio ATLAS Practice Questions: Molecules to Organisms

A diagram of a cell membrane shows a protein channel moving calcium ions from an area of low concentration inside the cell to an area of high concentration outside the cell. Which statement best categorizes this process and provides the correct rationale?

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25oC to 70oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?

A model of a plant cell shows the relationship between chloroplasts and mitochondria. Which statement correctly identifies the flow of matter between these two organelles?

Muscle cells require significantly more energy than skin cells to function. Based on this requirement, which claim about the hierarchical organization of these cells is most likely correct?

During a period of heavy exercise, a person's body temperature rises. The brain sends signals to the skin to produce sweat, which cools the body as it evaporates. This is an example of which biological mechanism?

A diagram of a cell membrane shows a protein channel moving calcium ions from an area of low concentration inside the cell to an area of high concentration outside the cell. Which statement best categorizes this process and provides the correct rationale?

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25oC to 70oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?

A model of a plant cell shows the relationship between chloroplasts and mitochondria. Which statement correctly identifies the flow of matter between these two organelles?

Muscle cells require significantly more energy than skin cells to function. Based on this requirement, which claim about the hierarchical organization of these cells is most likely correct?

During a period of heavy exercise, a person's body temperature rises. The brain sends signals to the skin to produce sweat, which cools the body as it evaporates. This is an example of which biological mechanism?

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25^oC to 70^oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?

In an experiment, a student increases the temperature of a solution containing enzymes and substrates from 25^oC to 70^oC. The rate of reaction initially increases but then drops to zero. Which explanation best describes the molecular cause of this drop?