Question 1

Which of the following best describes the primary theme of evolution as discussed in Section 1 of the course?

Accepted Answer

The process by which populations of organisms change over generations through variations and natural selection.

Question 2

A scientist is studying the effect of a new antibiotic on bacterial cell membranes. Which property of membranes is most relevant to understanding how the antibiotic might work?

Accepted Answer

Membranes are fluid mosaics of lipids and proteins that regulate permeability.

Question 3

Which of the following equations correctly represents the process of cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP$$

Question 4

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 5

Which of the following best explains why water is able to move across a cell membrane by osmosis?

Accepted Answer

Water moves from areas of low solute concentration to high solute concentration through aquaporins.

Question 6

A mutation in a gene results in a nonfunctional enzyme in the glycolysis pathway. Which of the following is the most likely consequence for the cell?

Accepted Answer

The cell will be unable to produce ATP efficiently from glucose.

Question 7

Which of the following statements about prokaryotic cells is correct?

Accepted Answer

Prokaryotic cells have circular DNA located in a nucleoid region.

Question 8

Which process is directly responsible for the synthesis of proteins from mRNA?

Accepted Answer

Translation

Question 9

Which of the following best describes the role of ATP in cellular metabolism?

Accepted Answer

ATP provides energy for cellular processes by transferring a phosphate group.

Question 10

A patient is diagnosed with a mitochondrial disorder that impairs the electron transport chain. Which of the following symptoms is most likely to result?

Accepted Answer

Decreased ability to produce ATP during aerobic respiration.

Question 11

Which of the following is a key difference between prokaryotic and eukaryotic gene expression?

Accepted Answer

In prokaryotes, transcription and translation can occur simultaneously, while in eukaryotes they are separated by the nuclear envelope.

Question 12

Which of the following best describes the function of the chloroplast in plant cells?

Accepted Answer

Chloroplasts convert light energy into chemical energy through photosynthesis.

Question 13

Which of the following is the correct sequence of events during mitosis?

Accepted Answer

Prophase, Metaphase, Anaphase, Telophase

Question 14

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

Viruses cannot reproduce independently outside a host cell.

Question 15

A researcher observes that a certain fungus can decompose dead plant material. What ecological role is this fungus performing?

Accepted Answer

Decomposer

Question 16

Which of the following is a function of the plasma membrane in eukaryotic cells?

Accepted Answer

Regulating the movement of substances into and out of the cell

Question 17

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 18

Which of the following is a real-world example of endosymbiosis as described in the evolution of eukaryotes?

Accepted Answer

The presence of mitochondria in animal cells, which are thought to have originated from ancestral prokaryotes.

Question 19

Which of the following best describes the function of tRNA during translation?

Accepted Answer

tRNA carries amino acids to the ribosome and matches them to the coded mRNA message.

General Biology I: Course Outline and Major Themes

Study Guide - Practice Questions

Study Guide - Flashcards