Lecture quiz 4/17/23 (monday)

Question 1

How many amino acids are there in a protein?

Answer 1

100

Question 2

What is protein?

Answer 2

• made out of Carbon (53%), Hydrogen (7%), Oxygen (23%), Nitrogen (16%) and S and P (<1%) = S & P depend on what amino acids
• principle components or organs and soft stirctures of animal bodies
• dietary requirement % is highest in young growing animals and declines gradually tot maturity
• all proteins have one common property: their basic structure is made of simple units (AA) amino acids

Question 3

What are amino acids

Answer 3

building block of proteinss
- required by animals

Question 4

Do animals need high protein dietary requirement when they reach maturity?

Answer 4

FALSE
high dietary requirement in young growing animals

Question 5

What is a true protein?

Answer 5

protein that are only composed of amino acids

Question 6

What is a non protein nitrogen?

Answer 6

NPN
compoundss that are not true protein in nature but contain N (example: urea). Ruminants can use NPN because of the bacteria in the rumen. It uses the NPN to make their own amino acids

Question 7

What is the source of true protein in ruminants?

Answer 7

NPN

Question 8

where can we find NPN?

Answer 8

feedstuffs in ruminants

Question 9

What is crude protein?

Answer 9

protein composed of true protein and any other nitrogenous product
- Based on nitrogen

Question 10

How do we calculate Crude protein (CP)?

Answer 10

CP= N% in feed x 6.25

Question 11

Where does the 6.25 come from when calculating the CP%?

Answer 11

it comes from the assumption that most proteins contain 16% N (average)

Question 12

What are NPN sources?

Answer 12

ammonia
amines
nucleic acids
urea
some B- vitamins

these are given in small amount

Question 13

What are the functions of dietary proteins?

Answer 13

• supply needed amino acids for the body to make its own proteins
• if present in excess, supplies energy
• cats have higher protein requirements than most mammals including dogs and humans

Question 14

What are Amino Acids?

Answer 14

• 20 or 22 amino acids that are commonly found in proteins.
  body can manufacture some but others cant

Question 15

What are essential amino acids?

Answer 15

required by animals. cannot be synthesized by the animal in the amounts needed.
must be available in the diet

Question 16

What are non essential amino acids?

Answer 16

required for protein synthesis but can be made by animals in adequate amounts

Question 17

What are D and L amino acids?

Answer 17

Amino acids can be present as isomersss = D or L amino acids
same chemical formula but differ in chemical structure
D and L isomers are mirror images of each other

Question 18

what is the exception that animals can use both D and L isomers?

Answer 18

methionine

Question 19

What are the essential amino acidss?

Answer 19

MATT HILL FOR VICE PRESIDENT
MATT - methionine arginine threonine and tryptophan
HILL - histidine, isoleucine,leucine, lysine
VP - valine and phenylalanine

Question 20

What is the essential amino acids that are required in cats?

Answer 20

taurine