Q: A plant is exposed to a hot, dry environment. Which adaptation would most likely help it minimize water loss while still performing photosynthesis?

Using Crassulacean Acid Metabolism (CAM) to fix CO\textsubscript{2} at night

Q: In the Calvin Cycle, what is the primary function of the enzyme Rubisco?

To fix atmospheric CO\textsubscript{2} to ribulose bisphosphate (RuBP)

Question 1

Which of the following best describes the main function of the electron transport chain in cellular respiration?

Accepted Answer

To generate a proton gradient across the inner mitochondrial membrane for ATP synthesis

Question 2

During the light reactions of photosynthesis, which molecule acts as the final electron acceptor in the linear electron flow?

Accepted Answer

NADP	extsuperscript{+}

Question 3

A plant is exposed to a hot, dry environment. Which adaptation would most likely help it minimize water loss while still performing photosynthesis?

Accepted Answer

Using Crassulacean Acid Metabolism (CAM) to fix CO	extsubscript{2} at night

Question 4

Which of the following best explains why cancer cells can divide indefinitely?

Accepted Answer

They maintain telomere length by expressing telomerase

Question 5

A heterozygous individual for a gene with complete dominance is crossed with a homozygous recessive individual. What is the expected phenotypic ratio in the offspring?

Accepted Answer

$$1:1$$

Question 6

Which phase of mitosis is characterized by the alignment of chromosomes along the metaphase plate?

Accepted Answer

Metaphase

Question 7

In the Calvin Cycle, what is the primary function of the enzyme Rubisco?

Accepted Answer

To fix atmospheric CO	extsubscript{2} to ribulose bisphosphate (RuBP)

Question 8

A woman who is a carrier for hemophilia (an X-linked recessive disorder) and a man who does not have hemophilia have a son. What is the probability that their son will have hemophilia?

Accepted Answer

$$0.5$$

Question 9

Which of the following events increases genetic variation during meiosis?

Accepted Answer

Crossing over between homologous chromosomes during prophase I

Question 10

A cell is observed to have chromosomes aligned in the center, spindle fibers attached to kinetochores, and the nuclear envelope is absent. Which stage is this cell in?

Accepted Answer

Metaphase

Question 11

Which of the following best describes the law of independent assortment?

Accepted Answer

Alleles of different genes assort independently of one another during gamete formation

Question 12

If a cell has a mutation that disables its G	extsubscript{1} checkpoint, what is the most likely consequence?

Accepted Answer

The cell may divide uncontrollably, leading to tumor formation

Question 13

Which of the following is a direct product of glycolysis?

Accepted Answer

Pyruvate

Question 14

A genetic cross between two individuals results in a 9:3:3:1 phenotypic ratio in the offspring. Which of the following best explains this result?

Accepted Answer

A dihybrid cross with independent assortment

Question 15

Which of the following statements about oxidative phosphorylation is correct?

Accepted Answer

It uses the energy from a proton gradient to synthesize ATP

Question 16

Which of the following is NOT a characteristic of cancer cells?

Accepted Answer

Dependence on anchorage for growth

Question 17

A man with blood type AB and a woman with blood type O have a child. What are the possible blood types of their child?

Accepted Answer

A or B

Question 18

Which of the following best describes the role of spindle fibers during mitosis?

Accepted Answer

They attach to kinetochores and help separate sister chromatids

Question 19

Which process is responsible for the conversion of pyruvate to lactic acid in muscle cells under anaerobic conditions?

Accepted Answer

Lactic acid fermentation

Question 20

A woman with genotype AaBb (for two unlinked genes) is crossed with a man with genotype aabb. What is the probability that their child will have the genotype AaBb?

Accepted Answer

$$0.25$$

General Biology II: Midterm Study Guide – Cellular Processes, Genetics, and Inheritance

Guida di studio - Domande di pratica

Study guide - Flashcard