Question 1

The genetic material of which kind of cells is included in a single,circular molecule of DNA devoid of any histone proteins?

Accepted Answer

A) bacteria 
B) protozoa 
C) insects 
D) flowering plants 
E) yeasts 
A) bacteria 
B) protozoa 
C) insects 
D) flowering plants 
E) yeasts

Question 2

The organelle involved in the oxygen-requiring process by which the energy in macromolecules is stored in ATP is the

Accepted Answer

A) nucleus. 
B) lysosome. 
C) ER. 
D) mitochondria. 
E) chloroplasts. 
A) nucleus. 
B) lysosome. 
C) ER. 
D) mitochondria. 
E) chloroplasts.

Question 3

Gram staining is a common method of distinguishing bacteria.It takes advantage of the thickness of the peptidoglycan layer in the cell wall.What type of bacteria appear red after staining with a secondary dye?

Accepted Answer

A) Gram negative 
B) Gram positive 
C) Gram neutral 
D) Gram prokaryotic 
A) Gram negative 
B) Gram positive 
C) Gram neutral 
D) Gram prokaryotic

Question 4

Ribosomes are

Accepted Answer

A) only DNA molecules. 
B) only RNA molecules. 
C) single,naked,and circular chromosomes. 
D) only protein molecules. 
E) large molecular aggregates of protein and RNA. 
A) only DNA molecules. 
B) only RNA molecules. 
C) single,naked,and circular chromosomes. 
D) only protein molecules. 
E) large molecular aggregates of protein and RNA.

Question 5

Microfilaments such as actin,microtubules,and the intermediate filaments form the cell-supporting structure called the ______________.

Accepted Answer

A) cytoplasm 
B) plasma membrane 
C) cytoskeleton 
D) nucleus 
A) cytoplasm 
B) plasma membrane 
C) cytoskeleton 
D) nucleus

Question 6

The proteins of the plasma membrane are in large part responsible for the cell's ability to interact with its environment.They act as or are involved in all of the following except

Accepted Answer

A) channel. 
B) recognition. 
C) reception. 
D) transport. 
E) packaging DNA. 
A) channel. 
B) recognition. 
C) reception. 
D) transport. 
E) packaging DNA.

Question 7

A cell biologist treats a cell so that oxygen cannot diffuse across the membrane.Which organelle will be directly affected?

Accepted Answer

A) mitochondria 
B) lysosome 
C) nucleus 
D) ribosome 
E) Golgi apparatus 
A) mitochondria 
B) lysosome 
C) nucleus 
D) ribosome 
E) Golgi apparatus

Question 8

Sulfolobus are archaea that are commonly found in geothermal environments,with an optimum growth temperature of about 80$\circ$C.Which of the following features allows archaea to thrive at such temperatures?

Accepted Answer

A) Archaea use the heat from their environment to produce ATP. 
B) Archaea are highly adaptable to changing environmental temperatures. 
C) Archaeal membranes contain special lipids. 
D) Archaea have two cell walls which helps prevent heat absorption. 
A) Archaea use the heat from their environment to produce ATP. 
B) Archaea are highly adaptable to changing environmental temperatures. 
C) Archaeal membranes contain special lipids. 
D) Archaea have two cell walls which helps prevent heat absorption.

Question 9

Hutchinson-Gilford Progeria Syndrome is a very rare disease that is caused by several different mutations in the lamin A gene.If you were to culture cells from patients who have Progeria,what effect might you expect to see over time?

Accepted Answer

A) a decrease in phagocytosis 
B) a decrease in membrane fluidity 
C) the nucleus would become misshapen 
D) the cells would burst 
A) a decrease in phagocytosis 
B) a decrease in membrane fluidity 
C) the nucleus would become misshapen 
D) the cells would burst

Question 10

Bacteria are generally

Accepted Answer

A) 1 to 2 centimeters thick. 
B) 1 to 2 millimeters thick. 
C) 1 to 2 micrometers thick. 
D) 1 to 2 nanometers thick. 
E) 1 to 2 meters thick. 
A) 1 to 2 centimeters thick. 
B) 1 to 2 millimeters thick. 
C) 1 to 2 micrometers thick. 
D) 1 to 2 nanometers thick. 
E) 1 to 2 meters thick.

Question 11

The eukaryotic organelle that is directly involved in the transport of proteins synthesized on the surface of the rough ER is called

Accepted Answer

A) mitochondriA. 
B) vacuole. 
C) cytoskeleton. 
D) Golgi complex. 
E) nucleus. 
A) mitochondriA. 
B) vacuole. 
C) cytoskeleton. 
D) Golgi complex. 
E) nucleus.

Question 12

Which of the following associations is unlike the others?

Accepted Answer

A) histone-nucleosome 
B) crista-mitochondria 
C) grana-chloroplast 
D) lysosome-peroxisome 
A) histone-nucleosome 
B) crista-mitochondria 
C) grana-chloroplast 
D) lysosome-peroxisome

Exam 4: Cell Structure

The genetic material of which kind of cells is included in a single,circular molecule of DNA devoid of any histone proteins?

The organelle involved in the oxygen-requiring process by which the energy in macromolecules is stored in ATP is the

Gram staining is a common method of distinguishing bacteria.It takes advantage of the thickness of the peptidoglycan layer in the cell wall.What type of bacteria appear red after staining with a secondary dye?

Ribosomes are

Microfilaments such as actin,microtubules,and the intermediate filaments form the cell-supporting structure called the ______________.

The proteins of the plasma membrane are in large part responsible for the cell's ability to interact with its environment.They act as or are involved in all of the following except

A cell biologist treats a cell so that oxygen cannot diffuse across the membrane.Which organelle will be directly affected?

Sulfolobus are archaea that are commonly found in geothermal environments,with an optimum growth temperature of about 80 ∘\circ∘ C.Which of the following features allows archaea to thrive at such temperatures?

Hutchinson-Gilford Progeria Syndrome is a very rare disease that is caused by several different mutations in the lamin A gene.If you were to culture cells from patients who have Progeria,what effect might you expect to see over time?

Bacteria are generally

The eukaryotic organelle that is directly involved in the transport of proteins synthesized on the surface of the rough ER is called

Which of the following associations is unlike the others?

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Sulfolobus are archaea that are commonly found in geothermal environments,with an optimum growth temperature of about 80^$\circ$C.Which of the following features allows archaea to thrive at such temperatures?