Practice Exam 1

Question 0

Which of the following is not a general characteristic of all living things? Responsiveness to environmental changes. —–Contain nuclei acids, proteins, carbohydrates, and lipids.

• Composed of tissues.
• Reproduction.
• Composed all at least one cell

Answer 0

Composed of tissues

Question 1

Metabolism is specifically defined as

Answer 1

The sum total of all chemical reactions occurring in the body

Question 2

When an organism loses control of its ability to maintain homeostasis it is

Answer 2

Diseased or dead

Question 3

At what level of structural organization or Atoms

Answer 3

Chemical or molecular

Question 4

If the outer electron shell is completely filled, then the Atom is?

Answer 4

Stable

Question 5

The strong bonds that usually form between carbon and hydrogen are called

Answer 5

Covalent bonds

Question 6

Individually weak bonds that form between water molecules due to water molecules being polar are called

Answer 6

Hydrogen bonds

Question 7

What specific property of water best explains the cooling effect of sweating

Answer 7

High heat of vaporization

Question 8

The pH of the solution is an indication of its

Answer 8

Acidity

Question 9

Buffers are important to human physiology mostly because they

Answer 9

Stabilize the pH of a solution

Question 10

Monosaccharides, this saccharides, and polysaccharides are all

Answer 10

Carbohydrates

Question 11

Carbohydrates are important to our body mainly because they

Answer 11

Provide energy

Question 12

A biologist heading proteins would identify the simplest subunit monomers as

Answer 12

Amino acids

Question 13

Triglycerides are so named because they are formed by joining of three fatty acid molecules to one

Answer 13

Glycerol

Question 14

Enzymes are proteins that generally function to?

Answer 14

Speed up chemical reactions

Question 15

And analysis of nucleotides in a complex molecule yielded equal amounts of adenine and thymine. what was the molecule

Answer 15

Deoxyribonucleic acid DNA

Question 16

As the surface area of a cell increases, the volume of the cell

Answer 16

Increases at a faster rate

Question 17

Which of the following form a double layer and make up the largest number of the molecules found in the plasma membrane

Answer 17

Phospholipids

Question 18

When a membrane is said to be “selectively permeable” this means that

Answer 18

The cell regulates what passes in and out

Question 19

The process whereby small molecules can passively travel through a membrane by moving from an area of high concentration to an area of low concentration is called

Answer 19

Diffusion

Question 20

If blood cells are added to hypertonic salt solution what will happen to them

Answer 20

They will shrink

Question 21

The____is bounded by double membrane with pores and contains the cells genetic material

Answer 21

Nucleus

Question 22

A cell with a great deal of rough endoplasmic reticulum would most likely be heavily involved in

Answer 22

Protein synthesis

Question 23

Which organelles perform sorting, modifying, packaging and shipping functions

Answer 23

Golgi complex

Question 24

Which type of cell division is responsible for the repair of your skin following a sunburn

Answer 24

Mitosis

Question 25

During which phase of the cell cycle do cell growth and normal cell functions occur?

Answer 25

Interphase

Question 26

During which phase of mitosis do the spindle fibers begin to pull the chromosomes to the opposite ends of the cell

Answer 26

Anaphase

Question 27

If you performed a laboratory analysis of DNA, you would find that the amount of cytosine should be____the amount of quinine

Answer 27

About the same as

Question 28

DNA replication occurs in the

Answer 28

Nucleus

Question 29

What is a specific segment of DNA that codes for the synthesis of a particular protein

Answer 29

Gene

Question 30

What is the order of transcription

Answer 30

DNA = mRNA

Question 31

A gene is ultimately expressed when the?

Answer 31

Protein is made