Micro Ch 1-2 Themes of Micro and Intro Chemistry (Cowan 5th Edition)

Question 1

The maximum number of e- that can occupy the first shell is

Accepted Answer

2

Question 2

The internal balance cells maintain by self-regulating adjustment.

Accepted Answer

homeostasis

Question 3

True or False? Spontaneous generation is a supported theory.

Accepted Answer

False

Question 4

The process through which cells obtain energy from food is called?

Accepted Answer

metabolism

Question 5

Which scientist first suggested health care workers wash their hands?

Accepted Answer

Semmelweis

Question 6

Cells that have a formed nucleus

Accepted Answer

eukaryotes

Question 7

Cells that lack a membrane bound nucleus are

Accepted Answer

prokaryotes

Question 8

A controlled experiment allows the scientist to isolate and test

Accepted Answer

a single variable

Question 9

Which of these organisms produce energy from the sun?

Accepted Answer

autotrophic

Question 10

Which of the following is a trait found exclusively in living things?

Accepted Answer

none of these

Question 11

A structure or behavior that allows an organism to survive in a particular environment

Accepted Answer

adaptation

Question 12

What do we call an educated guess that is repeatedly supported by experimental findings?

Accepted Answer

a theory

Question 13

The basic unit of life is the

Accepted Answer

cell

Question 14

Energy is __________________

Accepted Answer

all of these

Question 15

A neutral atom gained an extra e- in its valence shell. What is it now?

Accepted Answer

an anion

Question 16

Compared to a solution of pH 9, a solution of pH 7 has:

Accepted Answer

has more H+ ions

Question 17

Which nitrogenous base is found in RNA but NOT DNA?

Accepted Answer

U

Question 18

Which is a neutralization reaction?

Accepted Answer

HBr + KOH = HOH + KBr

Question 19

Polar molecules are composed of covalently bonded

Accepted Answer

atoms of different electronegativity

Question 20

Which of the following is the best example of an adaptation?

Accepted Answer

a camel's ability to store water

Questions 20