EXAM 2 REVIEW

25 July 2022
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question
Which of the following is NOT correlated to increased sugar consumption? cardiovascular disease diabetes All of the listed responses are correlated to increased sugar consumption. dental cavities
answer
All of the listed responses are correlated to increased sugar consumption.
question
Cellulose differs from starch in that? cellulose is highly branched, whereas starch is unbranched. starch is formed by plants and cellulose by animals. most animals cannot break down cellulose, whereas starch is easily digested. starch is made of glucose monomers, whereas cellulose is made of fructose monomers.
answer
most animals cannot break down cellulose, whereas starch is easily digested.
question
Peptide bonds are used to form amino acids. form between fatty acids. are formed by a hydrolysis reaction . link amino acids.
answer
link amino acids
question
Select the hydrocarbon from the following choices. H2CO3 CO2 C3H8 C6H12O6
answer
C3H8
question
How are genes used by cells to build proteins? The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein. The genes in RNA direct the synthesis of a DNA molecule, which is used to build a protein. DNA is transcribed into an amino acid sequence. The genes in RNA direct the synthesis of proteins directly.
answer
The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein.
question
The primary structure of a protein is? the amino acid sequence of the polypeptide chain. an alpha helix or a pleated sheet . maintained by hydrogen bonds. composed of two or more polypeptide chains.
answer
the amino acid sequence of the polypeptide chain
question
Fatty acids with double bonds between some of their carbons are said to be? monoglycerides. completely hydrogenated. saturated. unsaturated.
answer
unsaturated
question
What is the correct flow of information in gene expression? DNA>RNA>protein Protein>RNA>DNA DNA>protein>RNA RNA>DNA>protein
answer
DNA>RNA>protein
question
Which of the following statements about the functional groups of organic compounds is false? Many biological molecules have two or more functional groups. Functional groups participate in chemical reactions. Functional groups may help make organic compounds hydrophilic. All functional groups include a carbon atom.
answer
All functional groups include a carbon atom
question
Which of the following statements about the monomers and polymers found in living organisms is false? Monomers serve as building blocks for polymers. Monomers are joined together by the process of hydrolysis. Cells typically make all of their macromolecules from a set of 40-50 common monomers and a few other ingredients that are rare. The monomers used to make polymers are essentially universal.
answer
Monomers are joined together by the process of hydrolysis.
question
Organic compounds always contain carbon. always contain oxygen . are synthesized only by animal cells. always contain nitrogen.
answer
always contain carbon.
question
Which of the following is a carboxyl group? C-O -NH2 -COOH -OH
answer
COOH
question
Many names for sugars end in the suffix ase. -ose. -acid. -hyde.
answer
ose
question
A scientist suspects that the food in an ecosystem may have been contaminated with radioactive nitrogen over a period of months. Which of the following substances could be examined for radioactivity to test the hypothesis? the sugars produced during photosynthesis by plants growing in the ecosystem the cholesterol in the cell membranes of organisms living in the ecosystem the cell walls of plants growing in the ecosystem the hair produced by humans living in the ecosystem
answer
the hair produced by humans living in the ecosystem Submit