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What is NOT a function of the peroxisome?


A) oxidize toxic substances
B) break down fatty acids
C) synthesize certain phospholipids
D) protein synthesis

E) A) and C)
F) B) and C)

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D

Provide the tRNA anticodon that is complementary to this mRNA codon: UAC.


A) TUG
B) AUG
C) ATG
D) TAG

E) A) and C)
F) B) and D)

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Where does transcription of DNA into RNA occur?


A) Golgi apparatus
B) nucleus
C) mitochondrion
D) peroxisome

E) None of the above
F) A) and D)

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You are looking at a slide during laboratory using a microscope.How can you tell the difference between cilia and microvilli?

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Cilia are much larger than microvilli.In...

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You can differentiate the smooth endoplasmic reticulum (SER) from the rough endoplasmic reticulum (RER) due to the presence of__________ on the RER.


A) free ribosomes
B) bound peroxisomes
C) bound ribosomes
D) bound lysosomes

E) A) and B)
F) B) and C)

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The triplet codes in DNA needed to specify a specific polypeptide chain are found in the:


A) anticodon of tRNA.
B) codon of mRNA.
C) gene.
D) cytoplasm.

E) All of the above
F) B) and D)

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Which of the following describes the fluid mosaic model of the plasma membrane structure?


A) The lipid bilayer is solid at body temperature,thus protecting the cell.
B) The plasma membrane is composed of two layers of proteins embedded with lipids.
C) The phospholipid bilayer is embedded with associated proteins,cholesterol and sugars and has a dynamic arrangement.
D) Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains.

E) A) and C)
F) C) and D)

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Which of the following processes are functionally opposite to one another?


A) endocytosis and exocytosis
B) simple diffusion and facilitated diffusion
C) phagocytosis and pinocytosis
D) osmosis and simple diffusion

E) A) and B)
F) C) and D)

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Programmed cell death is called:


A) neoplasia.
B) hydrolysis.
C) apoptosis.
D) metastasis.

E) A) and B)
F) A) and C)

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Which of the following would NOT be a component of the plasma membrane?


A) glycoproteins
B) cholesterol
C) phospholipids
D) cytoskeleton

E) All of the above
F) A) and B)

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Two types of active transport via vesicles are:


A) endocytosis and exocytosis.
B) simple diffusion and facilitated diffusion.
C) primary active transport and secondary active transport.
D) diffusion and osmosis.

E) All of the above
F) A) and B)

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A tRNA molecule carries an anticodon which is complementary to a specific mRNA codon.

A) True
B) False

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What is NOT one of the three main parts of a cell?


A) cytoplasm
B) nucleus
C) plasma membrane
D) extracellular fluid

E) A) and B)
F) None of the above

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D

To make a protein,DNA first is replicated into RNA,and then RNA is transcribed into amino acids.

A) True
B) False

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Which organelle modifies,sorts,and packages proteins and lipids for export from the cell?


A) mitochondrion
B) cytoskeleton
C) endoplasmic reticulum
D) Golgi apparatus

E) A) and B)
F) C) and D)

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Cyanide interferes with oxidative catabolism.Determine what organelle is affected by cyanide and predict the effects of cyanide on how the organelle functions.

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Oxidative catabolism,or aerobic respirat...

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Both cilia and flagella are constructed of a ring of nine pairs of microtubules surrounding two central microtubules.

A) True
B) False

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The stage of the cell cycle in which the cell grows and prepares for cell division is called:


A) mitosis.
B) cytokinesis.
C) interphase.
D) metaphase.

E) B) and C)
F) C) and D)

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During which phase of mitosis are sister chromatids separated when the mitotic spindle fibers shorten?


A) anaphase
B) metaphase
C) telophase
D) prophase

E) None of the above
F) C) and D)

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Differentiate between integral proteins and peripheral proteins found associated with the plasma membrane.

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Integral proteins typically span the entire width of the membrane.When they do reach both sides of the membrane they are known as transmembrane proteins.Peripheral proteins are found only on one side of the membrane.They are loosely bound to the membrane surface or to integral proteins,and can move horizontally along the membrane surface.

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