Question 1

A bacterial cell's DNA is found in its? A. ribosomes. B. nucleoid region. C. capsule. D. nucleus.

Accepted Answer

B. Nucleoid Region.

Question 2

Unlike animal cells, plant cells have ________ and ________. Unlike plant cells, animal cells have ________. A. chloroplasts . . . cell walls . . . a nucleus B. chloroplasts . . . cell walls . . . centrioles C. centrioles . . . cell walls . . . large central vacuoles D. centrioles . . . chloroplasts . . . cell walls

Accepted Answer

B. Chloroplasts . . . Cell walls . . . Centrioles

Question 3

During cell reproduction, chromatin fibers coil up into structures called? A. nucleoli. B. ribosomes. C. chromosomes. D. lysosomes.

Accepted Answer

C. Chromosomes.

Question 4

Which of the following statements regarding the endomembrane system is false? A. The endomembrane system is a system of interrelated membranes that are all physically connected. B. The endomembrane system includes the rough and smooth endoplasmic reticulum. C. The endomembrane system includes the nuclear envelope. D. The endomembrane system is involved in the synthesis, storage, and export of important molecules.

Accepted Answer

A. The endomembrane system is a system of interrelated membranes that are all physically connected.

Question 5

Secretory proteins are? A. produced by the cell for internal use. B. chemically modified in the nucleus. C. released from the cell through the plasma membrane. D. produced by ribosomes on the smooth endoplasmic reticulum.

Accepted Answer

C. Released from the cell through the plasma membrane.

Question 6

Which of the following statements regarding the Golgi apparatus is false? A. The Golgi apparatus works closely with the endoplasmic reticulum. B. The Golgi apparatus decreases in size when a cell increases its protein production. C. The Golgi apparatus serves as a molecular warehouse and finishing factory. D. The Golgi apparatus modifies chemicals received from the endoplasmic reticulum.

Accepted Answer

B. The Golgi apparatus decreases in size when a cell increases its protein production.

Question 7

Tay-Sachs disease results from the malfunction of? A. endoplasmic reticulum. B. lysosomes. C. nucleoli. D. mitochondria.

Accepted Answer

B. Lysosomes.

Question 8

Which of the following statements about lysosomes is false? A. Lysosomes help to digest worn-out or damaged organelles. B. Lysosomes destroy harmful bacteria engulfed by white blood cells. C. Lysosomes fuse with food vacuoles to expose nutrients to lysosomal enzymes. D. Lysosomes synthesize proteins from the recycled amino acids.

Accepted Answer

D. Lysosomes synthesize proteins from the recycled amino acids.

Question 9

Which of the following statements about the functions of a plant cell central vacuole is false? A. The central vacuole of a plant cell may digest chemicals for recycling. B. The central vacuole of a plant cell may store waste products. C. The central vacuole of a plant cell may help increase the size of cells by absorbing water. D. The central vacuole of a plant cell may store poisons.

Accepted Answer

A. The central vacuole of a plant cell may digest chemicals for recycling.

Question 10

Which organelle is involved in the catabolism of fatty acids and the detoxification of alcohol? A. smooth ER B. ribosomes C. peroxisome D. Golgi apparatus

Accepted Answer

C. Peroxisome

Question 11

The ________ of a mitochondrion is/are an adaptation that increases the surface area and enhances a mitochondrion's ability to produce ATP. A. matrix B. cristae C. intermembrane space D. stroma

Accepted Answer

B. Cristae

Question 12

Mitochondria differ from chloroplasts in that mitochondria? A. are not found in plants, whereas chloroplasts are not found in animals. B. contain membrane folds called cristae, whereas chloroplasts contain disk-like vesicles in stacks called grana. C. convert light energy from the sun to chemical energy, whereas chloroplasts convert one form of chemical energy to another. D. contain three different membrane-bound compartments, whereas chloroplasts contain two.

Accepted Answer

B. Contain membrane folds called cristae, whereas chloroplasts contain disk-like vesicles in stacks called grana.

Question 13

The endosymbiosis hypothesis is supported by all of the following pieces of evidence, except the fact that? A. mitochondria have circular DNA like prokaryotes. B. mitochondria use ATP like prokaryotes. C. chloroplasts reproduce through a splitting process like certain prokaryotes. D. chloroplasts have ribosomes like prokaryotes.

Accepted Answer

B. Mitochondria use ATP like prokaryotes.

Question 14

Which of the following statements about the cytoskeleton is false? A. The cytoskeleton plays an important role in amoeboid motion. B. The cytoskeleton helps to support cells. C. The cytoskeleton is composed of three types of fibers: microfilaments, microtubules, and intermediate filaments. D. Once laid down, the elements of the cytoskeleton are fixed and remain permanently in place.

Accepted Answer

D. Once laid down, the elements of the cytoskeleton are fixed and remain permanently in place.

Question 15

A basal body is A. identical in structure to cilia. B. similar in structure to centrioles. C. composed of nine microtubule doublets surrounding a central pair of microtubules. D. composed of nine microtubule triplets surrounding a central pair of microtubules.

Accepted Answer

B. Similar in structure to centrioles.

Question 16

Most animal cells are A. embedded in an extracellular matrix. B. attached to each other via plasmodesmata. C. embedded in a lipid matrix. D. surrounded by a cell wall.

Accepted Answer

A. Embedded in an extracellular matrix.

Question 17

Which of the following would be most affected by a mutation that prevented cells from forming tight junctions? A. attachment of cells to the surrounding matrix B. attachment of the cytoskeleton to the inside of the plasma membrane C. integrity of the inner lining of the digestive tract D. direct flow of water and small molecules from one cell to another

Accepted Answer

C. integrity of the inner lining of the digestive tract

Question 18

Which of the following cell structures is associated with the breakdown of harmful substances or substances that are no longer needed by the cell? A. centrioles B. chloroplasts C. mitochondria D. peroxisomes

Accepted Answer

D. peroxisomes

Question 19

Which of the following cells has the greatest surface-to-volume ratio? A. human red blood cell B. ostrich egg C. human muscle cell D. bacterium

Accepted Answer

D. bacterium

Question 20

Which of the following statements about cells is true? A. All cells are motile. B. All cells have internal structures that move. C. All cells have cell walls. D. All cells are attached to other cells.

Accepted Answer

B. All cells have internal structures that move.

Question 21

Resolution is the? A. distance between the lenses of a microscope. B. ability of an optical instrument to magnify an image. C. size of an image. D. ability of an optical instrument to show two close objects as separate.

Accepted Answer

D. ability of an optical instrument to show two close objects as separate.

Question 22

A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why? A. a scanning electron microscope, because it can reveal structures on cell surfaces B. a scanning electron microscope, because it can be used to observe whole cells without slicing them C. a transmission electron microscope, because it has high resolution D. a light microscope, because it allows observations of whole, live cells

Accepted Answer

D. a light microscope, because it allows observations of whole, live cells

Question 23

As cell size increases, the A. surface area and volume increase at the same rate. B. volume increases faster than the surface area. C. surface area increases faster than the volume. D. volume and surface area decrease.

Accepted Answer

B. volume increases faster than the surface area.

MasteringBiology - Chapter 4, A Tour of the Cell Flashcards

Multiple-Choice

Brainscape's Knowledge GenomeTM

MasteringBiology - Chapter 4, A Tour of the Cell Flashcards

Multiple-Choice

Brainscape's Knowledge Genome^TM