Cell Bio Exam 1

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Proteins

Enzymes are what?

Increased lifespan

Experiments in nematode worms show feeding worms 10-30% less food led to:

By binding to the activation site

How does sucrose change the configuration of sucrase

Many times

How many times can sucrase be used to hydrolyze sucrose

Orienting active sites of enzymes to fit reactants

How might a membrane improve the efficiency of an enzymatic pathway

the final product of the biochemical pathway

In feedback inhibition, the inhibitor of the biochemical pathway is typically

Broken down into glucose and fructose

In simple terms, what happens to sucrose

Reducing power

A cell's reservoir of NADPH composes its

Decreased proline production

Consider the biochemical pathway used to synthesize the amino acid proline. A high increase in the level of proline will most likely lead to?

True

T/F: ATP is a nucleotide

False

T/F: All biochemical pathways have the same number of enzymatic reactions

False

T/F: An enzyme can only bind to one reactant at a time

False

T/F: Enzymes speed up a chemical reaction in the cell but can only be used once

False

T/F: If the end product of a biochemical pathway becomes available in the environment, it is crucial for the cell to continue making the product

True

T/F: In a biochemical pathway the product of the first reaction becomes the substrate in the second reaction

Rich in nonpolar covalent bonds in hydrocarbons

The activation site of an enzyme which breaks down fatty acids is most likely

the conversion of simple molecules into complex ones

What does the energy of sunlight allow for in biological systems

It decreases

What happens to entropy in an endergonic reaction

Allosteric site of the enzyme being inhibited

Where does the inhibitor bind during feedback inhibition

Microvilli of small intestine

Where is sucrose found in the body?

chemical, mechanical

______ energy is converted to ______ energy when heat is released during muscle contraction

Feedback

_______ inhibitors bind to the allosteric site

Transduction

the conversion of energy from one form to another


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