Question 1

The molecule DNA contains the five-carbon sugar ________.

Accepted Answer

The answer of The molecule DNA contains the five-carbon sugar...

Question 2

Explain the polar character of an ammonia molecule (NH3).What is the cause of the partial charges? What is the overall charge for NH3?

Accepted Answer

When chemically bonded with each other,t

Question 3

A free radical is a

Accepted Answer

A)  charged particle. 
B)  molecule with an extra electron. 
C)  molecule with an extra neutron. 
D)  molecule with an extra proton. 
E)  molecule with an unpaired electron. 
A)  charged particle. 
B)  molecule with an extra electron. 
C)  molecule with an extra neutron. 
D)  molecule with an extra proton. 
E)  molecule with an unpaired electron.

Question 4

Solutions are formed with water and ________ molecules as solutes which dissolve in them.

Accepted Answer

The answer of Solutions are formed with water and ________...

Question 5

Proteins are described as having different levels of structure.List and distinguish between the level(s)that produce a linear shape vs.a globular shape,and explain why one of those levels can result in either a linear or globular shape.

Accepted Answer

Linear shapes: primary,secondary,quatern

Question 6

The smallest unit of an element is a(n)________.

Accepted Answer

The answer of The smallest unit of an element is...

Question 7

Which of the following is a way to recognize a carbohydrate by looking at its name only?

Accepted Answer

A)  It always ends in -ase. 
B)  It ends in -ose 
C)  It begins with nucleo-. 
D)  It begins with proteo-. 
E)  It begins with lipo-. 
A)  It always ends in -ase. 
B)  It ends in -ose 
C)  It begins with nucleo-. 
D)  It begins with proteo-. 
E)  It begins with lipo-.

Question 8

A(n)________ is a homogeneous mixture containing a solvent and a solute.

Accepted Answer

The answer of A(n)________ is a homogeneous mixture containing a...

Question 9

Match the symbol with the correct element:
-O2

Accepted Answer

A) P 
B) Na 
C) Ca 
D) C 
E) K
F)Pb 
A) P 
B) Na 
C) Ca 
D) C 
E) K
F)Pb

Question 10

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all.
-This particle has a charge of +1 and a mass of 1.

Accepted Answer

A) proton(s) 
B) neutron(s) 
C) electron(s) 
A) proton(s) 
B) neutron(s) 
C) electron(s)

Question 11

According to the rules of complementary base pairing,a nucleotide containing the base cytosine would only pair with a nucleotide containing the base

Accepted Answer

A)  thymine. 
B)  adenine. 
C)  uracil. 
D)  cytosine. 
E)  guanine. 
A)  thymine. 
B)  adenine. 
C)  uracil. 
D)  cytosine. 
E)  guanine.

Question 12

How many grams of NaCl,m.w.58.5 daltons,are necessary to make 1 liter of 5% saline?

Accepted Answer

A)  58.5 
B)  1 
C)  50 
D)  6.02 × 1023 
E)  2.9 
A)  58.5 
B)  1 
C)  50 
D)  6.02 × 1023 
E)  2.9

Question 13

Your roommate is not a science major but is interested in science and asks you to verify a rumor he has heard: it is theoretically possible for two people to walk through each other without causing harm.Confirm or refute what he has heard,and explain.

Accepted Answer

People are composed of molecules,which a

Question 14

The center of an atom is called the ________.

Accepted Answer

The answer of The center of an atom is called...

Question 15

Which of the following substances is most alkaline?

Accepted Answer

A)  lemon juice, pH = 2 
B)  urine, pH = 6 
C)  tomato juice, pH = 4 
D)  white wine, pH = 3 
E)  stomach secretions, pH = 1 
A)  lemon juice, pH = 2 
B)  urine, pH = 6 
C)  tomato juice, pH = 4 
D)  white wine, pH = 3 
E)  stomach secretions, pH = 1

Question 16

Match the symbol with the correct element:
-potassium

Accepted Answer

A) P 
B) Na 
C) Ca 
D) C 
E) K
F)Pb 
A) P 
B) Na 
C) Ca 
D) C 
E) K
F)Pb

Question 17

Your swimming buddy Mark jumped into a pool parallel to the water surface.When he stood up,he yelled "ouch" and you noticed that the skin on his chest and belly looked red and irritated.How would you describe the properties of water to explain to Mark why this happened? Why doesn't it hurt when pool water is penetrated perpendicular to the surface,as with a hands-first or feet-first dive?

Accepted Answer

Because Mark was parallel to the water s

Question 18

Ions with a positive charge are called ________.

Accepted Answer

The answer of Ions with a positive charge are called...

Question 19

The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called

Accepted Answer

A)  hydrogen bonds. 
B)  van der Waals forces. 
C)  ionic bonds. 
D)  hydrogen bonds and van der Waals forces. 
E)  van der Waals forces and ionic bonds. 
A)  hydrogen bonds. 
B)  van der Waals forces. 
C)  ionic bonds. 
D)  hydrogen bonds and van der Waals forces. 
E)  van der Waals forces and ionic bonds.

Question 20

A nucleotide consists of a

Accepted Answer

A)  five-carbon sugar and phosphate group. 
B)  five-carbon sugar and a nitrogenous base. 
C)  phosphate group and a nitrogenous base. 
D)  five-carbon sugar, a nitrogenous base, and a phosphate group. 
E)  five-carbon sugar and an amino acid. 
A)  five-carbon sugar and phosphate group. 
B)  five-carbon sugar and a nitrogenous base. 
C)  phosphate group and a nitrogenous base. 
D)  five-carbon sugar, a nitrogenous base, and a phosphate group. 
E)  five-carbon sugar and an amino acid.

Exam 2: Molecular Interactions

The molecule DNA contains the five-carbon sugar ________.

Explain the polar character of an ammonia molecule (NH3).What is the cause of the partial charges? What is the overall charge for NH3?

A free radical is a

Solutions are formed with water and ________ molecules as solutes which dissolve in them.

Proteins are described as having different levels of structure.List and distinguish between the level(s)that produce a linear shape vs.a globular shape,and explain why one of those levels can result in either a linear or globular shape.

The smallest unit of an element is a(n)________.

Which of the following is a way to recognize a carbohydrate by looking at its name only?

A(n)________ is a homogeneous mixture containing a solvent and a solute.

Match the symbol with the correct element: -O2

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all. -This particle has a charge of +1 and a mass of 1.

According to the rules of complementary base pairing,a nucleotide containing the base cytosine would only pair with a nucleotide containing the base

How many grams of NaCl,m.w.58.5 daltons,are necessary to make 1 liter of 5% saline?

Your roommate is not a science major but is interested in science and asks you to verify a rumor he has heard: it is theoretically possible for two people to walk through each other without causing harm.Confirm or refute what he has heard,and explain.

The center of an atom is called the ________.

Which of the following substances is most alkaline?

Match the symbol with the correct element: -potassium

Ions with a positive charge are called ________.

The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called

A nucleotide consists of a

Introduction to Physiology

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

Reproduction and Development

Filters

Explain the polar character of an ammonia molecule (NH₃).What is the cause of the partial charges? What is the overall charge for NH₃?

Match the symbol with the correct element: -O₂