Protein

Question 1

What is protein made of?

Answer 1

amino acids

Question 2

What is a peptide?

Answer 2

a combination of two or more amino acids

Question 3

What is a dipeptide?

Answer 3

when two amino acids combine

Question 4

What is a polypeptide?

Answer 4

when three or more amino acids combine

Question 5

What is a protein?

Answer 5

a very long chain of 50 or more amino acids

Question 6

How many different amino acids are there?

Answer 6

21

Question 7

Where must amino acids that cannot be synthesised come from?

Answer 7

food

Question 8

What are the functions of protein?

Answer 8

build bones, muscles, cartilage and skin

repair damaged tissue

helps supply blood with nutrients

aids in digesting food

plays an important role in hormone regulation

excess protein is used for energy

Question 9

What are the three main groups proteins are classified into?

Answer 9

globular
membrane
fibrous

Question 10

What are the four levels of protein structure?

Answer 10

primary
secondary
tertiary
quaternary

Question 11

How is protein digested?

Answer 11

begins with the action of an enzyme called pepsin
pepsin breaks the peptide bonds that hold the molecules together
completed in the small intestine by the pancreatic enzymes trypsin, chymotrypsin and carboxypeptidase

Question 12

What does excess protein result in?

Answer 12

nitrogen is converted into ammonia then to urea by the liver

blood urea nitrogen content increases and extra urea is excreted in urine

water intake increases which results in a greater urine amount and a noticeable ammonia smell

Question 13

What does too little protein intake result in?

Answer 13

reduced growth

rough haircoat

reduced hoof growth

abnormal skeletal development

reduced milk production