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The function of most proteins depends primarily on the
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Which factor is least likely to contribute to an increase in the rate of evolution?
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Which procedure would most likely provide valid results in a test to determine if drug A would be effective in treating cancer in white mice?
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Which statement indicates one difference between the gene that codes for insulin and the gene that codes for testosterone in humans?
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Which condition would most likely upset the stability of an ecosystem
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Damage to which structure will most directly disrupt water balance within a single-celled organism?
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Enzyme molecules normally interact with substrate molecules. Some medicines work by blocking enzyme activity in pathogens. These medicines are effective because they
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
Which substances are found on cell surfaces and respond to nerve and hormone signals?
have a shape that fits into the enzyme
receptor molecules
a greater mass of animals than plants
The gene for insulin has a different sequence of molecular bases than the gene for testosterone
type and order of amino acids
injecting 1 mL of drug A into 100 white mice with cancer and 1 mL of distilled water into another group of 100 white mice wit
a long period of environmental stability
cell membrane
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