EXam Article

Question 1

Lipid phosphatase

Answer 1

Enzyme that catalysts chemical reaction

Question 2

PTEN

Answer 2

Protein encoded by PTEN gene

Question 3

Substrate

Answer 3

Chemical upon which enzyme acts

Question 4

Myosin based transport machinery

Answer 4

Vesicles move along actin filaments

Question 5

Signal transduction

Answer 5

The process by which a signal is converted into a form that can cause a specific cellular response.

Question 6

What is a germ line mutation

Answer 6

Mutations in germ cells (that can be transmitted to offspring)

Question 7

What is a kinase

Answer 7

Enzyme that catalyses the transfer of a phosphate group from ATP to a specific molecule

Question 8

Types of motor protein and where do they travel along

Answer 8

Kinesins - microtubules move to + end (towards outside of cell)
Dyneins - microtubules move to - end (towards centre of cell)
Myosin family - actin filaments

Question 9

Active transport

Answer 9

Transport against electrochemical or concentration gradient

Needs energy source

Question 10

Domains

Answer 10

Physically distinct compact sub structures - often linked by flexible hinge region
(In folded protein)

Question 11

N terminal and C-terminal

Answer 11

N (amino) - NH2
C (carboxyl)
Protein created from N to C