Test 1

Question 1

Characteristics of living things?

Answer 1

– Living Things Acquire and Use Materials and Energy
– Living Things Grow
– Living Things Reproduce Themselves
– Living Things as a Whole Have the Capacity
to Evolve
– Living Things are Made of Cells
– Respond to Stimuli
– Must maintain relatively constant internal conditions

Question 2

What are the unique properties of water, and how is each important to life?

Answer 2

1. Water is important because the hydrogen and oxygen together makes up most living things.
2. Water interacts with a lot of molecules and can break them down.
3. Water is polar mean it has a positive side and a negative side.
4. Cohesion: water molecules stick together. Which makes it possible for the molecules to reach the top of the tree.
5. Water stabilizes temperatures because it takes a lot of energy to heat it up or cool it down.
6. water never completely freezes in the inner parts of body of water. Which leaves the animals below it alive.
7. Water is neither extremely basic or acidic so it doesn’t give off a lot of energy so it is very stable.

Question 3

What are the eight functional groups.

Answer 3

Hydrogen
Hydroxyl
Carboxyl
Carbonyl
Amino
Methyl
Phosphate
Sulfhydryl

Question 4

name of some disaccharide

Answer 4

sucrose lactose

maltose

Question 5

polysaccarides

Answer 5

starch cellulose pectin

Question 6

Secondary structures

Answer 6

Secondary structures are helices and pleated sheets.

Question 7

Tertiary structure

Answer 7

refers to complex foldings of the protein chain held together by disulfide bridges, hydrophobic/hydrophilic interactions, and other bonds.

Question 8

what classifies a covalent bond?

Answer 8

when atoms are bonded together and they share electrons

Most important macro molecules are formed with these bonds

Question 9

hydrogen bonds

Answer 9

A hydrogen bonding to a oxygen or nitrogen;

technically a type of a covalent bond

Question 10

what are the functions of proteins?

Answer 10

structure: ie nails horns
movement: actin and myosin
defense: antibodies in bloodstream
storage: albumin
signaling: growth hormons