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Exam 2: Chemistry Comes Alive

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Question 1

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Match the following: A) Weight B) Energy C) Mass D) Matter -Anything that occupies space and has mass.

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Question 2

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Which protein types are vitally important to cell function in all types of stressful circumstances?

A) structural proteins
B) molecular chaperones
C) catalytic proteins
D) regulatory proteins

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Question 3

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In general, the lipids that we refer to as oils have ________.

Match the following: A) Weight B) Energy C) Mass D) Matter -Is a function of, and varies with, gravity.

Figure 2.2 Using Figure 2.2, match the following: -Deoxyribose sugar.

A charged particle is generally called an ion or electrolyte.

A) B) C) D) E) Figure 2.1 Using Figure 2.1, match the following: -Lipid

The pH of body fluids must remain fairly constant for the body to maintain homeostasis.

The lower the pH, the higher the hydrogen ion concentration.

Match the following chemical bonds to the correct description: A) Ionic bond B) Hydrogen bond C) Polar covalent bond D) Nonpolar covalent bond -A type of bond important in tying different parts of the same molecule together into a three-dimensional structure.

Select which reactions will usually be irreversible regarding chemical equilibrium in human bodies.

Match the following particles to the correct description: A) Neutron B) Atom C) Cation D) Molecule -Neutral subatomic particle.

________ have a bitter taste, feel slippery, and are proton acceptors.

The atomic number is equal to the number of ________.

Match the following: A) Compound B) Mixture C) Element -Carbon.

How can phospholipids form a film when mixed in water?

Salts are always ________.

An atom with a valence of 3 may have a total of ________ electrons.

Protons and electrons exist in every atom nucleus except hydrogen. Is this statement True or False and why?

Match the following: A) Suspensions B) Colloids C) Solutions -Will not scatter light.