Chapter 1-2+ some of 3: Exam 1 REVISED

Question 1

Essay Question: How do you maintain a membrane polarity?

Answer 1

The polarity of the cell membrane is maintained by the selective distribution of lipids and proteins in plasma membrane. Regulates what comes in and out of the cell.

Question 2

Essay Question: Describe feedback loops and the parts of them.

Answer 2

Negative Feedback Loop: When a human is hungry, the metabolism slows down to conserve on energy and allows the human to live with less food
Positive Feedback Loop: When a woman is in labor and the uterus begins to contract, baby moves down further near the cervix, thinning the cervix effaced, signaling the brain (CNS) to produce oxytocin and send it down to the uterus to make contractions quicker until baby arrives.
Parts of a Feedback loop:
Receptor (Detective)
Control Center
Effector

Question 3

A steroid has how many rings?

Answer 3

4 rings

Question 4

Cholesterol is a

Answer 4

hormone

Question 5

What are the three types of mechanical digestion?

Answer 5

1. Chewing (mastication)
2. Swallowing
3. Entering stomach acid

Question 6

What is the two types of chemical digestion?

Answer 6

1. Catabolism (breaking down energy)
2. Anabolism (building larger molecules out of small molecules or atoms)

Question 7

Non-Polar+Polar=

Answer 7

Amphipathic

Question 8

Catalyst Change…

Answer 8

Only change time and speed, not the product

Question 9

Radioisotope=

Answer 9

Unbalanced

Question 10

Atomic Mass:

Answer 10

Protons and Neutrons

Question 11

Atomic Number:

Answer 11

Protons

Question 12

Sodium chloride is

Answer 12

ionic bond (unbalanced)

Question 13

Potassium Chloride is

Answer 13

ionic bond (unbalanced)

Question 14

Oxygen is

Answer 14

electronegative

Question 15

Triglycerides are

Answer 15

3, Sugar backbone

Question 16

Diasaccharide

Answer 16

2, Lactose

Question 17

Phospholipid

Answer 17

A head and a tail

Question 18

Exergonic-

Answer 18

Release of energy

Question 19

Endergonic

Answer 19

Absorption of energy

Question 20

Activation Energy:

Answer 20

Energy taking place, increasing temperature and concentration increases bond collisions

Question 21

Bond Collisions must happen:

Answer 21

At the right time and the right angle

Question 22

Hydrophobic:

Answer 22

Lipids (does not like water) nothing with carbon

Question 23

Hydrophilic:

Answer 23

Water loving (phosphate head)

Question 24

Hydrolysis:

Answer 24

Breaks by adding water

Question 25

Dehydration synthesis:

Answer 25

Build by removing water

Question 26

All Enzyme’s end with…

Answer 26

Aze

Question 27

Prostaglandins:

Answer 27

Contribute to inflammatory response and temperature regulation

Question 28

Endergonic is what to the touch

Answer 28

Cool to the touch

Question 29

Exergonic to the touch

Answer 29

Hot to the touch

Question 30

Protein Structure:

Answer 30

1. Primary
2. Secondary
3. Tertiary
4. quatiary

Question 31

Primary

Answer 31

The order of the amino acids

Question 32

Secondary

Answer 32

Beta sheets or a-helix

Question 33

Tertiary

Answer 33

looks like globs, formed by hydrogen bonds

Question 34

Quartiary

Answer 34

Interacts with other proteins

Question 35

CHON=

Answer 35

Carbon, Hydrogen, Oxygen, and Nitrogen= needed for life

Question 36

Potential energy=

Answer 36

potential to move

Question 37

Kinetic energy=

Answer 37

Energy in motion

Question 38

Synthesis reaction:

Answer 38

A+B=AB

Question 39

Decomposition reaction:

Answer 39

AB>A+B

Question 40

Exchange reaction:

Answer 40

A+B+C>AB+C>AC+B

Question 41

Colloid=

Answer 41

Large enough to scatter