1
Q
What are the monomeric units of proteins?
A
Amino acids
2
Q
Outline the journey an amino acid takes from food to protein in a cell
A
- food is ingested
- enzymes in the stomach/small intestine hydrolyse protein into amino acids
- the amino acids are absorbed by the gut wall into the blood
- the amino acids leave the blood in the tissue fluid and enter cells
- proteins are synthesised on the ribosomes
3
Q
Give 4 functions of proteins
A
- enzymes
- hormones
- antibodies
- structural proteins
4
Q
What is a chain of amino acids called?
A
A polypeptide
5
Q
What is the function of haemoglobin?
A
Carries oxygen in the blood in erythrocytes
6
Q
How many oxygen atoms can one haemoglobin molecule carry?
A
8 - remember ATOMS not MOLECULES
7
Q
What is the function of catalase?
A
Break down of hydrogen peroxide which otherwise is harmful to cells
Bio Prelims
flashcards
Decks in class (23)
# Cards
-
Unit 2: Microscopy6
-
Unit 2 - Cells and Organelles18
-
Unit 2 - Cells and Organelles 25
-
Unit 2 - Carbohydrates4
-
Unit 2 - Proteins7
-
Unit 2 - Enzymes7
-
Unit 2 - Plasma membranes6
-
Unit 2 - Diffusion/osmosis/active transport35
-
Unit 2 - Cell organisation and stem cells10
-
Unit 3 - Mammalian gas exchange and ventilation10
-
Unit 3 - Gas exchange and ventilation in bony fish and insects9
-
Unit 3 - Circulatory systems13
-
Unit 3 - Blood and blood vessels13
-
Unit 3 - Structure and anatomy of the heart3
-
Unit 3 - Transport in plants14
-
Unit 4 - Variation and Evolution25
-
Unit 4 - Biodiversity10
-
Unit 5 - Photosynthesis5
-
Unit 5 - Respiration7
-
Unit 6 - Ecosystems23
-
Unit 6 - Population and Sustainability11
-
Exam25
-
Digestion7
