Question 1

Streptomycin inhibits the production of

Accepted Answer

A)   phospholipids.
B)   protein.
C)   bacterial proteins only.
D)   bacterial peptidoglycans.
E)   bacterial phospholipids only.

Question 2

The _______ is the site of cellular respiration where the energy stored in food is extracted.

Accepted Answer

A)   mitochondrion
B)   cytoplasm
C)   nucleus
D)   Golgi apparatus
E)   chloroplast

Question 3

What theory states that mitochondria and chloroplasts are derived from free-living prokaryotic cells?

Accepted Answer

A)   endosymbiosis
B)   prokaryotic
C)   organelle
D)   osmosis
E)   endoplasmic

Question 4

Sugars are large,hydrophilic molecules that are important energy sources for cells.Sugars can enter cells from an environment with a very high concentration of sugar by

Accepted Answer

A)   simple diffusion.
B)   osmosis.
C)   facilitated diffusion.
D)   active transport.
E)   using ribosomes.

Question 5

Proteins are modified and packaged for delivery in the

Accepted Answer

A)   endoplasmic reticulum.
B)   cytoplasm.
C)   nucleus.
D)   cytoskeleton.
E)   Golgi apparatus.

Question 6

Gram-positive and Gram-negative bacteria are most commonly differentiated in the laboratory by whether__________.

Accepted Answer

A)   penicillin can kill them or not
B)   a dye is trapped within the cells during the Gram staining procedure
C)   the bacteria are collected from the outside or the inside of an infected patient
D)   water can flow into the bacteria,causing them to burst
E)   the bacteria contain peptidoglycan

Question 7

Animal cells have all of the following EXCEPT

Accepted Answer

A)   cell walls.
B)   mitochondria.
C)   lysosomes.
D)   Golgi apparatus.
E)   endoplasmic reticulum.

Question 8

The two major components of cell membranes are _______ and _______.

Accepted Answer

A)   phospholipids;DNA
B)   DNA;proteins
C)   peptidoglycan;phospholipids
D)   peptidoglycan;proteins
E)   phospholipids;proteins

Question 9

Which of the following is not found in prokaryotic cells?

Accepted Answer

A)   cell membrane
B)   ribosomes
C)   mitochondria
D)   cell membrane and ribosomes
E)   cytoplasm

Question 10

Penicillin interferes with the synthesis of _____.

Accepted Answer

A)   bacterial cell membranes
B)   peptidoglycan
C)   the nuclear envelope
D)   membrane proteins
E)   ribosomes

Question 11

The terms hydrophilic and hydrophobic relate to a substance's interaction with which molecule?

Accepted Answer

A)   glucose
B)   ATP
C)   oxygen
D)   phosphate
E)   water

Question 12

Insulin is a protein hormone secreted by certain pancreatic cells into the bloodstream.Which of the following organelles are involved in the synthesis and secretion of insulin?

Accepted Answer

A)   rough ER
B)   Golgi apparatus
C)   ribosomes
D)   ribosomes,rough ER,and Golgi apparatus
E)   rough ER and Golgi apparatus

Question 13

The "endosymbiotic hypothesis" is a concept that explains _____.

Accepted Answer

A)   how eukaryotic cells might have evolved mitochondria and chloroplasts within their cells
B)   how plant cells produce usable cellular energy from sunlight
C)   why ribosomes are only found in the eukaryotic cytoplasm,never inside an organelle
D)   why mitochondria and chloroplasts are so unlike each other
E)   why chromosomes are only found inside the nucleus of a eukaryotic cell

Question 14

Which of the following is not a cytoskeletal fiber in eukaryotic cells?

Accepted Answer

A)   macrotubules
B)   intermediate filaments
C)   microfilaments
D)   microtubules
E)   All of the answers are cytoskeletal fibers.

Question 15

Gram-positive bacteria grown in the presence of penicillin swell and lyse because

Accepted Answer

A)   their cell wall becomes weakened.
B)   osmosis allows water into the cell.
C)   water pressure causes the cell to rupture.
D)   no new cell wall can be synthesized.
E)   All of the above.

Question 16

Proteins that move large or hydrophilic molecules across a cell membrane are called ____ proteins.

Accepted Answer

A)   transfer
B)   osmotic
C)   integral
D)   transport
E)   diffusion

Question 17

Penicillin kills bacteria by disrupting their

Accepted Answer

A)   cell wall.
B)   cell membrane.
C)   DNA.
D)   ribosomes.
E)   lysosomes.

Question 18

Water is moving across a membrane from solution A into solution B.What can you infer?

Accepted Answer

A)   Solution A must be pure water.
B)   Solution A must have a lower solute concentration than Solution B.
C)   Solution A must have a higher solute concentration than Solution B.
D)   Solution A and Solution B must have the same concentration of solutes.
E)   Solution B must be pure water.

Question 19

Bacteria are _____ cells,defined by the _____.

Accepted Answer

A)   prokaryotic;presence of a cell wall
B)   eukaryotic;presence of organelles
C)   eukaryotic;absence of a cell wall
D)   prokaryotic;absence of organelles
E)   eukaryotic;absence of organelles

Question 20

Ribosomes are necessary for:

Accepted Answer

A)   DNA replication.
B)   protein production.
C)   transcription.
D)   DNA elongation.
E)   respiration.

Exam 3: Cell Structure and Function

Streptomycin inhibits the production of

Correct AnswerverifiedShow Answer

Insulin is a protein hormone secreted by certain pancreatic cells into the bloodstream.Which of the following organelles are involved in the synthesis and secretion of insulin?

Correct AnswerverifiedShow Answer

The "endosymbiotic hypothesis" is a concept that explains _____.

Correct AnswerverifiedShow Answer

Which of the following is not found in prokaryotic cells?

Correct AnswerverifiedShow Answer

Ribosomes are necessary for:

Correct AnswerverifiedShow Answer

Gram-positive and Gram-negative bacteria are most commonly differentiated in the laboratory by whether__________.

Correct AnswerverifiedShow Answer

Penicillin kills bacteria by disrupting their

Correct AnswerverifiedShow Answer

What theory states that mitochondria and chloroplasts are derived from free-living prokaryotic cells?

Correct AnswerverifiedShow Answer

Animal cells have all of the following EXCEPT

Correct AnswerverifiedShow Answer

Proteins that move large or hydrophilic molecules across a cell membrane are called ____ proteins.

Correct AnswerverifiedShow Answer

Penicillin interferes with the synthesis of _____.

Correct AnswerverifiedShow Answer

Water is moving across a membrane from solution A into solution B.What can you infer?

Correct AnswerverifiedShow Answer

The terms hydrophilic and hydrophobic relate to a substance's interaction with which molecule?

Correct AnswerverifiedShow Answer

The _______ is the site of cellular respiration where the energy stored in food is extracted.

Correct AnswerverifiedShow Answer

The two major components of cell membranes are _______ and _______.

Correct AnswerverifiedShow Answer

Sugars are large,hydrophilic molecules that are important energy sources for cells.Sugars can enter cells from an environment with a very high concentration of sugar by

Correct AnswerverifiedShow Answer

Gram-positive bacteria grown in the presence of penicillin swell and lyse because

Correct AnswerverifiedShow Answer

Proteins are modified and packaged for delivery in the

Correct AnswerverifiedShow Answer

Which of the following is not a cytoskeletal fiber in eukaryotic cells?

Correct AnswerverifiedShow Answer

Bacteria are _____ cells,defined by the _____.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The two major components of cell membranes are _ and _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Bacteria are _ cells,defined by the _.

Correct Answer
verified