Bio 22

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study guide (final Exam)
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physiology
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1

Which of the following lists contain elements that have ionic forms critical to muscle contraction and action potential generation?

Ca, Na, K

2

Isotopes are

atoms with unpaired electrons in their outermost shells.

3

A physician suspects a patient may have a thyroid tumor. Which of the following radioisotopes will help the physician confirm the initial diagnosis?

iodine-131

4

Which of the following is an ion and why?

O2- because it contains an unpaired electron in its outer shell.

5

Which of the following compounds is polar covalent?

KI

6

Hydrogen bonds

form between hydrogen and nitrogen or oxygen atoms.

7

In a chemical reaction,

the starting materials are called products.

8

This is a derivative of riboflavin.

Lactic acid

9

The kinetic energy needed to break the chemical bonds in reactant molecules is called

potential energy

10

Which of the following influence the rate of a chemical reaction?

the concentration of the reactants

the temperature

the presence of catalysts or enzymes