FREE AND STUDY GAMES ABOUT AP BIO EXAM

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FREE AND STUDY GAMES ABOUT AP BIO EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -31 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Which of the following functional differences between the rough and smooth endoplasmic reticulum is explained by the structural differences between them?

Answer:

Rough can synthesize and package proteins for export, and smooth cannot.Question 2: Which of the following scientific questions is most relevant to the model represented in the figure above?

Answer:

Which molecular substance is actively transported across the plasma membrane?Question 3: Intravenous (IV) solutions administered to patients are normally isotonic. Which of the following is most likely if an IV of distilled water is administered to a patient?

Answer:

The cells that are exposed to hypotonic solutions will expand as water moves osmotically into the cells from the blood.

Question 4: If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membranes is also inhibited?

Answer:

Passage of a solute against its concentration gradient Question 5: Which of the following data would support the alternative hypothesis?

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Cells with mutated aquaporins exhibit moderate turgor pressure and are hypertonic.Question 6: If ADH secretion is inhibited, which of the following would initially result?

Answer:

The person would produce greater amounts of dilute urine.Question 7: Which of the following describes the most likely relationship between transpiration and water intake in the plant?

Answer:

Transpiration from the leaves of the plant stimulates subsequent water intake by the roots of the plant.

Question 8: Which of the following best describes the numbered areas?

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Areas 1 and 3 are polar, since the membrane molecules are aligned with water molecules.Question 9: Which statement best describes the effect on water transport across the cell membrane if the aquaporin in the figure ceases to function?

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Water molecules will still be able to move across the cell membrane but at a slower rate.

Question 10: Which of the following is the correct explanation for the data?

Answer:

The contraction rate increases as the osmolarity decreases because the amount of water entering the paramecia by osmosis increases.

Question 11: Which of the following, if true about the drug, best supports the alternative hypothesis that the new drug will exhibit simple diffusion across plasma membranes?

Answer:

The drug is a small nonpolar molecule.Question 12: Which of the following statements describes a feature shared by mitochondria and the endoplasmic reticulum that increases the efficiency of their basic functions?

Answer:

They have highly folded membranes.Question 13: Which of the following statements best helps explain how the enzyme speeds up the reaction?

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The enzyme's active site binds to and stabilizes the transition state, which the activation energy of the reaction.Question 14: Which of the following statements best predicts the effect of increasing the concentration of substrate (ethyl alcohol), while keeping the concentration of the inhibitor (methyl alcohol) constant?

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Competitive inhibition will decrease because the proportion of the active sites occupied by substrate will increase.Question 15: Which of the following is a scientific claim about how the structure of the mitochondria in muscle cells should be different than it is in other cells because of the high energy demands of mitochondria?

Answer:

The inner membrane of the mitochondria in muscle cells should have more folds to increase the surface area, allowing more to be synthesized.Question 16: Which of the following experimental designs will result in the fastest net rate of water movement into chamber A?

Answer:

Placing salt water in chamber A and distilled water in chamber B

Question 17: Which investigation will help determine whether the new membrane protein is a channel protein involved in membrane transport?

Answer:

Add more of the proteins to the plasma membrane and measure the rate of the particle movement.

Question 18: Water enters and leaves the plant cells primarily by

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Osmosis Question 19: Based on the model, the newly synthesized protein is transported directly from the endoplasmic reticulum to which of the following?

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The Golgi complex Question 20: Which of the following outcomes will most likely result from a loss of ion pump function in the cell's lysosomes?

Answer:

The internal of the lysosomes will increase, which will prevent the activation of hydrolytic enzymes and interfere with the intracellular digestion of food.Question 21: If, instead of the bag, a potato slice were placed in the beaker of distilled water, which of the following would be true of the potato slice?

Answer:

It would gain mass.Question 22: Which of the following statements is true regarding the movement of substances across cell membranes?

Answer:

Ions are unable to move through the phospholipid bilayer because the nonpolar tail regions of the phospholipids are hydrophobic.Question 23: To model a plant cell, a permeable, nonflexible case is placed around each piece of dialysis tubing. The greatest pressure potential will develop within dialysis tube number

Answer:

4