Proteosomes ________ proteins that have been damaged or denatured.
A) tag for destruction by a different organelle
B) break down
C) expel from the cell
D) repair
E) duplicate
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Question 2) ________ are responsible for identifying and digesting damaged or denatured proteins.
A) Peroxisomes
B) Proteasomes
C) Lysosomes
D) Endosomes
E) Nucleosomes
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Question 3) The r in rRNA stands for
A) regeneration.
B) recurrence.
C) rebuilding.
D) ribosomal.
E) radiation.
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Question 4) Ribosomes are composed of protein and
A) glycogen.
B) rRNA.
C) ATP.
D) DNA.
E) steroids.
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Question 5) ________ may be scattered in the cytoplasm or bound to endoplasmic reticulum.
A) Mitochondria
B) Ribosomes
C) Vesicles
D) Proteosomes
E) Nuclei
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Question 6) Motile cilia move fluids across a cell's surface, while a flagellum
A) cools a cell.
B) is not motile.
C) fastens one cell to another.
D) propels a cell through fluid.
E) detects environmental stimuli.
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Question 7) Cilia and flagella contain nine pairs of ________ surrounding a central pair.
A) microvilli
B) microfilaments
C) microsomes
D) microtubules
E) intermediate filaments
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Question 8) Centrioles form the basal bodies that anchor microtubules within cilia and
A) flagella.
B) microfilaments.
C) microvilli.
D) ribosomes.
E) chromosomes.
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Question 9) The ________ is the microtubule organizing center of the cell.
A) flagellum
B) ribosome
C) nucleus
D) centrosome
E) plasma membrane
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Question 10) If an animal cell lacked centrioles, it would not be able to
A) move.
B) synthesize proteins.
C) produce DNA.
D) metabolize sugars.
E) divide.
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