Bio 121 exam 1

Question 1

Neutrons

Answer 1

No electrical charge

Question 2

Protons

Answer 2

Postive charge

Question 3

Electrons

Answer 3

Negative charge

Question 4

Isotopes

Answer 4

2 atoms of an element that differ in number of neutrons

Question 5

Valence Electrons

Answer 5

those in the outermost (valence) shell

Question 6

Orbital

Answer 6

3d space where electron is found 90% of the time

Question 7

Double covalent Bond

Answer 7

sharing of 2 pair of valence electrons

Question 8

Cohesion

Answer 8

• Helps transport water against gravity in plants

- attraction between diff substances (ex: water and plant cell walls)

Question 9

Surface Tension

Answer 9

measure of how difficult it is to break the surface of a liquid

Question 10

Acids

Answer 10

Donates a proton

Question 11

Base

Answer 11

Accepts a proton

Question 12

Which of the following is NOT one of Darwin’s observations?

Answer 12

All individuals in a population reproduce at an equal rate, and all of those offspring survive.

Question 13

Which of the following is an example of INDUCTIVE reasoning?

Answer 13

Every known individual Live Oak tree ever observed has been photosynthetic; therefore, all Live Oak trees are photosynthetic

Question 14

All the organisms on your campus make up a

Answer 14

Community

Question 15

Hydrocarbons

Answer 15

• Hydrocarbons are organic molecules consisting of only carbon and hydrogen
• Great at storing energy

Question 16

What is the result of sharing an electron?

Answer 16

covalent bond

Question 17

A carbon atom has six protons but has 7 neutrons, this carbon atom would be called a:

Answer 17

Isotope