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

Question 1

Which of the following statements best describes the Central Dogma of molecular biology?

Accepted Answer

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

Question 2

A scientist observes a cell with a nucleus, mitochondria, and chloroplasts. Which type of cell is she most likely observing?

Accepted Answer

A plant cell

Question 3

Which microscopy technique would be most appropriate for visualizing the surface details of a cell at a resolution of 3 nm?

Accepted Answer

Scanning electron microscopy (SEM)

Question 4

During differentiation, cells in a multicellular organism become specialized. What is the primary mechanism that allows this specialization?

Accepted Answer

Cells turn on and off different subsets of genes from the same genome.

Question 5

Which equation best represents the process of cellular respiration in mitochondria?

Accepted Answer

$\mathrm{C_6H_{12}O_6} + 6\,\mathrm{O_2} ightarrow 6\,\mathrm{CO_2} + 6\,\mathrm{H_2O} + 	ext{ATP}$

Question 6

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

Accepted Answer

They have internal membrane-bound organelles.

Question 7

A researcher wants to study the 3D atomic structure of a protein. Which technique should she use?

Accepted Answer

X-ray crystallography

Question 8

Which of the following statements about mitochondria is TRUE?

Accepted Answer

Mitochondria contain their own circular DNA and ribosomes.

Question 9

Which model organism is most commonly used for rapid genetic studies of development and mutation analysis?

Accepted Answer

Drosophila melanogaster

Question 10

Which of the following best explains why cells in the same multicellular organism can have different shapes and functions?

Accepted Answer

Cells selectively express different genes from the same genome.

Question 11

Which organelle is responsible for modifying and distributing molecules within a eukaryotic cell?

Accepted Answer

Golgi apparatus

Question 12

Which of the following statements about the cell theory is correct?

Accepted Answer

All living cells arise from the growth and division of existing cells.

Question 13

Which of the following is a function of lysosomes in eukaryotic cells?

Accepted Answer

Breakdown of endocytosed material or unwanted molecules

Question 14

Which of the following best describes the evolutionary origin of mitochondria?

Accepted Answer

They evolved from engulfed aerobic bacteria in a symbiotic relationship.

Question 15

Which equation represents the process of photosynthesis in chloroplasts?

Accepted Answer

$6\,\mathrm{CO_2} + 6\,\mathrm{H_2O} + 	ext{light energy} ightarrow \mathrm{C_6H_{12}O_6} + 6\,\mathrm{O_2}$

Question 16

Which of the following statements about peroxisomes is TRUE?

Accepted Answer

Peroxisomes are self-replicating vesicles that inactivate toxic substances using O$_2$ and H$_2$O$_2$.

Question 17

Which of the following is a major function of the cytoskeleton in eukaryotic cells?

Accepted Answer

Providing structure, shape, and support; enabling transport with motor proteins

Question 18

A cell biologist wants to observe the distribution of a specific protein within living cells. Which microscopy technique should she use?

Accepted Answer

Fluorescence light microscopy

Question 19

Which model organism is most useful for studying internal compartments of eukaryotic cells and shares many fundamental processes with human cells?

Accepted Answer

Saccharomyces cerevisiae

Chapter 1: Cells – The Fundamental Units of Life (Mini-Textbook Study Notes)

Study Guide - Practice Questions