AP Biology: Cellular Energetics Practice Test

Both the light reactions and the Calvin cycle of photosynthesis take place in what plant cell organelle?

What statement summarizes what happens during stage II of photosynthesis (the Calvin Cycle)?

What describes an important link between photosynthesis and cellular respiration?

Which statement best describes the relationship between glucose and ATP?

Which cellular respiration process creates the most ATP?

Which of the following exercises would NOT be fueled with energy produced from the electron transport chain?

Which of the following is the correct equation for PHOTOSYNTHESIS?

What are the products of photosynthesis?

What is the pigment in chloroplasts that performs photosynthesis?

Where does cellular respiration occur?

How is cellular respiration related to photosynthesis?

Which of the following statements is false?

Which molecule enters Kreb’s Cycle?

Where does ETC occur?

Several essential mechanisms in the cell, including protein synthesis, require the amino acid glutamine. The formation of glutamine from glutamate and ammonia is an energy- requiring process. This process is carried out by an enzyme called glutamine synthetase.

The action of glutamine synthetase is summarized in the diagram below.

Based on the information provided, which of the following statements is true?

Pancreatic amylase is a digestive enzyme found in the small intestine. It helps break down large starch molecules later in the digestive process. Pancreatic amylase is unable to break down lipids.

Which of the following best explains why pancreatic amylase is able to break down starches, but not lipids?

A group of biology students wants to study the effects of pH on enzyme activity. Theymeasure the activity of enzymes A and B at various pHs and record their data in the graph below.

A solution of enzyme A has a pH of 888. Based on the graph, which pH change would result in higher enzyme activity?

The major source of energy in a cell is adenosine triphosphate, or ATP. ATP can be synthesized in mitochondria using a protein complex called ATP synthase. A group of scientists studied a collection of fruit flies that had fewer ATP synthase complexes than normal due to various gene mutations. Many of these mutant flies died early in development. Some of the mutant flies lived into adulthood, but had severe defects in their ability to move. The scientists collected data about the likelihood of surviving into adulthood and the average number of ATP synthase complexes for each mutant population. They then used this data to generate Figure 1.

Figure 1. A model of the relationship between ATP synthase levels and fruit fly survivorship. ATP synthase complex number is measured as a percentage of the level normally found in fruit flies. Survivorship is measured as the percentage of individuals in a population of flies that live to adulthood.

A newly discovered gene mutation causes fruit flies to have ATP synthase levels that are about one-third of normal. Based on the information presented in Figure 1, which of the following describes a likely outcome for a population made up of these flies?

Which of the following best describes the process of induced fit?