420169
Questão 1
Questão
In order to form a polymer from monomers, monomers must:
Responda
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undergo trypsin reactions
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undergo dehydration reactions
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undergo amylase reactions
Questão 2
Questão
Which of the following cellular functions is associated with the smooth endoplasmic reticulum (SER)?
Responda
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houses the DNA
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produces hydrogen peroxide as byproduct
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contains hydrolytic (digestive) enzymes
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stores Ca 2+
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energy powerhouse of cell (makes ATP)
Questão 3
Questão
Which of the following statements is false regarding protein structure?
Responda
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one type of secondary structure found in proteins is called an alpha helix
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beta sheets are an example of tertiary structure
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tertiary structure may be supported with hydrogen bonding, ionic bonding , hydrophobic interactions and covalent bonding amino acids in the polypeptide
Questão 4
Questão
Which of the following membrane proteins are involved in active transport across the plasma membrane?
Responda
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a chloride channel
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sodium/potassium ATPase (Na+/K+pump)
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glucose transporter
Questão 5
Questão
What will happen to a red blood cell that is placed into a hypertonic solution?
Responda
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nothing, it will remain unchanged, the water will flow in an dout of the cell at the same rate
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it will lyse (burst) because too much water will enter the cell from the surrounding fluid
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it will shrivel because too much water will leave the cell into the surrounding fluid
Questão 6
Questão
The molecule DNA is important to biological systems because
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it can be replicated
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it forms a complex, double-helical structure.
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nucleotides form genes.
Questão 7
Questão
The molecule DNA is important to biological systems because
Responda
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it can be replicated
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it forms a complex, double-helical structure.
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nucleotides form genes.
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