Question 1

In terms of enzymatic function, digestion __________ molecules.

Accepted Answer

breaks down

Answer

combines

Answer

slows down

Answer

builds

Question 2

Which of the following components of the cell membrane helps to stabilize the membrane to maintain flexibility and fluidity.

Accepted Answer

cholesterol

Answer

Protein channels

Answer

carbohydrate chains

Answer

phospholipids

Question 3

African elephants have larger ears than Indian elephants. This is because they live in a hotter climate. The larger ears allows for excess heat to escape so they do not overheat. Which of the following characteristics of life is described above?

Accepted Answer

Maintains homeostasis

Answer

Takes in energy from the environment

Answer

Growth and development

Answer

Reproduction

Question 4

Which of the following statements is TRUE about the brain cells, skin cells, and genetic information in an individual human?

Accepted Answer

The brain cells and skin cells contain the same genetic information.

Answer

The skin cells contain genetic information, but the brain cells do not.

Answer

The brain cells and skin cells contain different genetic information.

Answer

The brain cells contain genetic information, but the skin cells do not.

Question 5

Diffusion is the process of smaller molecules, such as water and oxygen, moving through the cell membrane from an area of high concentration to an area of low concentration.

Accepted Answer

true

Answer

false

Question 6

Which is NOT a function of proteins in the human body?

Accepted Answer

cytoplasm

Answer

Muscle fibers

Answer

part of the cell membrane

Answer

Enzymes

Question 7

The human body system is composed of a huge number of interconnected neurons. Which correctly describes the pathway of a nerve impulse through the nervous system?

Accepted Answer

Sensory neurons --> Central Nervous System --> Motor neurons

Answer

Sensory neurons --> Motor neurons --> Central Nervous System

Answer

Central Nervous System --> Sensory neurons --> Motor Neurons

Answer

Motor neurons --> Central Nervous Sytem --> Sensory neurons

Question 8

The sequence of deoxyribose sugars allows organisms to be different from one another.

Accepted Answer

false

Answer

true

Question 9

The human body regulates body temperature. This is an example of

Accepted Answer

Homeostasis

Answer

Mitosis

Answer

Photosynthesis

Answer

Cellular Respiration

Question 10

Which of the following is the correct path of food through the digestive system?

Accepted Answer

Mouth-->Esophagus → Stomach → Small Intestine → Large Intestine

Answer

Mouth → Esophagus → Liver → Large Intestine

Answer

Esophagus → Teeth → Stomach → Small Intestine

Answer

Mouth → Stomach → Large Intestine → Small Intestine

Question 11

If Adenine makes up 15% of a DNA strand, what percentage would be Thymine in the DNA strand?

Accepted Answer

15%

Answer

35%

Answer

30%

Answer

70%

Question 12

Which of the following macromolecules can be used for energy?

Accepted Answer

Carbohydrates

Answer

Proteins

Answer

Lipids

Answer

Nucleic Acids

Question 13

A muscle cell is delivered oxygen from nearby capillaries. Oxygen diffuses into the cell while other substances are blocked from entering, making the muscle cell's cell membrane _____?

Accepted Answer

Semipermeable

Answer

Perforated

Answer

Permeable

Answer

Polarized

Question 14

Chargaff's rules of base pairing state that adenine will always pair with....?

Accepted Answer

thymine

Answer

guanine

Answer

cytosine

Question 15

DNA, which is the genetic basis for all living things is what type of macromolecule?

Accepted Answer

nucleic acid

Answer

lipid

Answer

protein

Answer

carbohydrate

Question 16

Two students were studying the effect of temperature on two naturally occurring enzymes. Study the graph of the data to answer the following questions.

At what temperature does the maximum activity of enzyme B occur?

Accepted Answer

75

Answer

0

Answer

35

Answer

60

Question 17

What is meant by an enzyme reaction being a lock and key model?

Accepted Answer

An enzyme can only work on one substrate

Answer

Substrates are broken down with help from carbon dioxide

Answer

Enzymes only work when a lipid is present

Answer

Multiple substrates can be worked on by the same enzyme

Question 18

The various enzymes in our body are _______________.

Accepted Answer

Proteins

Answer

Lipids

Answer

Nucleotides

Answer

Carbohydrates

Question 19

Which of the following macromolecules can be used for quick energy?

Accepted Answer

Carbohydrate

Answer

protein

Answer

nucleic acid

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