Exam 1

Question 1

The smallest unit of life that can survive and reproduce on its own is:

Answer 1

The cell

Question 2

Producers obtain energy from:

Answer 2

The sun

Question 3

ability of organism to contain a constant internal environment is called

Answer 3

homeostasis

Question 4

Which domains are made of organisms w/o nuclei?

Answer 4

Archea and Bacteria

Question 5

eukaryotes that range from single cells like amoeba to multicells seaweeds are members of the kingdom:

Answer 5

Protista

Question 6

A scientific name consists of the following:

Answer 6

Genus and specific epithet

Question 7

Science only addresses that which is:

Answer 7

Observable

Question 8

A testable explanation for a natural phenomenon is an:

Answer 8

Hypothesis

Question 9

Experimental result that is statistical significant is:

Answer 9

unlikely to occur by chance alone

Question 10

Fundamental building blocks of all matter

Answer 10

Atoms

Question 11

Negative subatomic particles is:

Answer 11

Electron

Question 12

Isotopes of the same element differ in the number of:

Answer 12

neutrons

Question 13

In the shell model, how many electrons can the second shell hold?

Answer 13

8

Question 14

What is form when an atom loses or gains an electron?

Answer 14

an Ion

Question 15

What type of bond is formed when atoms share a pair of electrons?

Answer 15

covalent

Question 16

what is a Hydrogen bond?

Answer 16

a week bond, attraction that forms bw an electronegative atom and a hydrogen atom taking part in a separate covalent bond

Question 17

Why is water important to living organisms?

Answer 17

bc a. its cohesive properties

b. temperatures stabilizing properties
c. liquid at room temperature
d. it has capacity to dissolve other substances

Question 18

from one to ten on PH scale, which is most acidic?

Answer 18

1

Question 19

cellular Ph is kept near a value of seven due to:

Answer 19

the action of buffers

Question 20

The atom diagnostically associated with organic compounds is:

Answer 20

Carbon

Question 21

An OH group is an:

Answer 21

Hydroxyl group

Question 22

The formation of large molecules from small subunits is known as what kind of reaction?

Answer 22

Condensation

Question 23

Which reaction results of breakdown of macromolecule into simpler substances?

Answer 23

Hydrolysis

Question 24

Which is a building block of carbohydrates?

Answer 24

monosaccharide

Question 25

What do functional groups do when bonded to an organic molecule?

Answer 25

They impart specific chemical properties such as polarity or acidity to that molecule.

Question 26

Samples of lipids are:

Answer 26

steroids, triglycerides, oils and waxes

Question 27

Cell membranes are characterized by the presence of:

Answer 27

Phospholipids

Question 28

What kind of building blocks are proteins are made of:

Answer 28

Amino acids building blocks

Question 29

What type of bonds links proteins together?

Answer 29

Peptide bonds

Question 30

The primary structure of a protein is the

Answer 30

The sequence of amino acids

Question 31

Proteins may function as:

Answer 31

structural units, enzymes, storage molecules, and transport molecules

Question 32

What is the study of life called:

Answer 32

Biology