Lecture 3

Question 1

Negative feedback loops

Answer 1

Restores to normal conditions

Question 2

Positive feedback loops

Answer 2

Exaggerates change

Question 3

Three things homeostasis needs

Answer 3

1. Sensor 2. Central Center 3. Effector

Question 4

Carbohydrates

Answer 4

Preferred energy source for most cells. Monosaccharides are the building blocks.

Question 5

Building Sugars

Answer 5

Dehydration systhesis

Question 6

Breaking Down Sugars

Answer 6

Hydrolysis

Question 7

Many monosarccharides

Answer 7

Polysarccharides

Question 8

Lipids purpose

Answer 8

Energy storage, membrane structure, chemical messengers.

Question 9

Examples of Lipids

Answer 9

Fats, oils, waxes, steroids, phospholipids

Question 10

Saturated fats

Answer 10

No double bonds, solid at room temp

Question 11

Unsaturated fats

Answer 11

Double bonds, liquid at room temp

Question 12

Lipids energy storage

Answer 12

Fatty acids (saturated and unsaturated)

Question 13

Glycerol

Answer 13

How fatty acids group together

Question 14

Lipid chemical messengers

Answer 14

Eicosanoids (injury/disease) & Steroids (cell growth and division, reproduction, digestion of fats)

Question 15

Lipid membrane structure

Answer 15

Cholesterol, phospholipids, glycolipids

Question 16

Phospholipids

Answer 16

Make phospholipid bilayer in cells. Hydrophilic head, hydrophobic tail

Question 17

What denatures proteins

Answer 17

Heat or change in pH

Question 18

Enzymes

Answer 18

Lower activation energy

Question 19

Nucleic acids

Answer 19

DNA and RNA

Question 20

The cell

Answer 20

Preforms all of lifes functions, and need to remain in homeostasis.

Question 21

Intracellular fluid

Answer 21

Inside of the cell

Question 22

Extracellular fluid

Answer 22

Outside of the cell