Exam 3: Cells: the Living Units

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Free ribosomes make soluble pr...

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A) cytoplasm
B) membranes
C) organelles
D) intercellular material

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A) produces nucleus replication
B) is the formation of sex cells
C) creates diversity in genetic potential
D) always results in division of a cell

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A) receptor- mediated endocytosis
B) phagocytosis
C) pinocytosis
D) secondary active transport

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A) circulating antibody
B) molecular transport through the membrane
C) oxygen transport
D) forms a lipid bilayer

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A) The nucleotide sequence in a mRNA codon is an exact copy of the DNA triplet that coded for it except that uracil is substituted for thymine.
B) The nucleotide sequence in a tRNA anticodon is an exact copy of the DNA triplet that coded for it.
C) The nucleotide sequence in a tRNA anticodon is an exact copy of the DNA triplet that coded for it except that uracil is substituted for thymine.
D) The nucleotide sequence in a mRNA codon is an exact copy of the DNA triplet that coded for it.

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A) the inside of the cell is positive relative to its outside
B) the steady state involves only passive processes in all cells
C) extracellular sodium levels are high
D) cells are more permeable to Na+ than K+

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A) stereocilia
B) cilia
C) microvilli
D) flagella

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A) salts
B) proteins
C) sugars
D) water

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