Question 1

Plants,fungi and bacterial all have:

Accepted Answer

A)  cell walls
B)  chloroplasts
C)  nuclei
D)  lysosomes
E)  mitochondria A

Question 2

Streptomycin is an antibiotic that interferes with the function of the 30S subunit of the prokaryotic ribosome.What is the consequence of treating a bacteria with streptomycin?

Accepted Answer

A)  Impaired oxygen synthesis
B)  Impaired protein synthesis
C)  Impaired DNA synthesis
D)  Impaired ATP synthesis B

Question 3

Ribosomes are made up of:

Accepted Answer

A)  only DNA molecules.
B)  only RNA molecules.
C)  DNA and RNA.
D)  only protein molecules.
E)  protein and RNA. E

Question 4

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.

Question 5

If you were to use antibodies that were chemically bonded to a stain in order to visualize the expression pattern of a protein in a fixed tissue,what experimental techniques and equipment would be applicable?

Accepted Answer

A)  immunohistochemistry,bright-field microscopy
B)  DAPI or Hoechst stains,fluorescence microscopy
C)  antibody interference assay,bright-field microscopy
D)  immunohistochemistry,dark-field microscopy

Question 6

In eukaryotes,mitochondria are the organelles primarily involved in:

Accepted Answer

A)  energy release/capture.
B)  phospholipid assembly.
C)  export of enzymes.
D)  lipid synthesis.
E)  protein synthesis.

Question 7

Individuals that are heavy smokers may eventually have trouble clearing the mucous from their lungs because the structures that move fluid along the epithelial lining of the lung become damaged over time.What are these structures called?

Accepted Answer

A)  Pili
B)  Flagella
C)  Cell walls
D)  Cilia

Question 8

You stain a cell with a dye that reacts with an enzyme found in the lysosome.You would also expect to see this dye in the:

Accepted Answer

A)  endoplasmic reticulum.
B)  cytoplasm.
C)  nucleus.
D)  mitochondria.

Question 9

When looking at plant and animal cells with an electron microscope,you notice that the plant cells have more Golgi membranes than the animal cells.This is most likely because unlike in animal cells,in plant cells the Golgi apparatus is involved in the production of:

Accepted Answer

A)  cell walls.
B)  cytoplasm.
C)  chloroplasts.
D)  mitochondria.

Question 10

Many antibiotics kill bacteria because they hinder translation by prokaryotic ________.

Accepted Answer

A)  nucleoids
B)  cytoskeleton
C)  ribosomes
D)  capsules
E)  cytoplasm

Question 11

Prokaryotic cells are smaller than eukaryotic cells.What is a plausible explanation?

Accepted Answer

A)  Prokaryotic cell walls limit their cell growth.
B)  Prokaryotes lack the genetic material needed for protein synthesis.
C)  Eukaryotes have compartmentalization,which allows for specialization.
D)  Prokaryotes have more diverse energy sources.
E)  Eukaryotes are immobile allowing them to grow larger.

Question 12

A cytologist is examining a tissue under an electron microscope.He notices that the endoplasmic reticulum of each cell is extremely rough in appearance and he knows that the rough appearance is because of the ribosomes embedded there.He asks why there are so many ribosomes.You respond,

Accepted Answer

A)  "This tissue exports lipids and is very involved with mRNA production."
B)  "This tissue exports proteins to other areas of the body."
C)  "This tissue exports various nucleic acids,hence the large number of ribosomes present on the endoplasmic reticulum in each of those cells."

Question 13

The spreading of cancer cells,wound healing,and blood clotting all rely on the same type of cell movement called:

Accepted Answer

A)  swimming.
B)  crawling.
C)  whipping.
D)  waving.

Question 14

The semifluid matrix that surrounds organelles in a cell is called the:

Accepted Answer

A)  ribosome.
B)  cytoplasm.
C)  stroma.
D)  nucleoplasm.

Question 15

The nucleolus is the site of:

Accepted Answer

A)  protein synthesis.
B)  ribosome assembly.
C)  chromosome replication.
D)  lipid synthesis.
E)  uncoiling and unraveling of chromosomes.

Question 16

As ATP moves from the matrix of the mitochondrion to the cytoplasm of a cell,how many membranes will it pass?

Accepted Answer

A)  1
B)  2
C)  3
D)  4

Question 17

A cell biologist has developed a new drug that blocks vesicle transport at the cis face of the Golgi apparatus.What will this drug prevent from happening inside a cell?

Accepted Answer

A)  The synthesis of proteins or lipids on the endoplasmic reticulum.
B)  The movement of the lipids and proteins from the endoplasmic reticulum to the Golgi apparatus.
C)  The movement of materials from the Golgi apparatus to the plasma membrane.
D)  The movement of vesicles from mitochondria to the Golgi apparatus.

Question 18

The organelle that can collect,package,modify,and transport molecules is called the:

Accepted Answer

A)  mitochondria.
B)  plasma membrane.
C)  vesicle.
D)  Golgi apparatus.

Question 19

Peroxisomes are examples of:

Accepted Answer

A)  chromosomes.
B)  lysosomes.
C)  microbodies.
D)  nucleosomes.
E)  ribosomes.

Question 20

A doctor diagnosis a child with adrenoleukodystrophy (ALD)a disorder in which there is an accumulation of long fatty acid chains accumulating in the cells of the central nervous system.The issues arise with malfunctions in enzymes associated with which organelle?

Accepted Answer

A)  Golgi bodies
B)  ribosomes
C)  vacuoles
D)  peroxisomes
E)  endoplasmic reticulum

Exam 4: Cell Structure