H- Division And Differentiation In Human Cells

Question 1

Germline stem cells divide 2 times during meiosis explain the 2 stages

Answer 1

1) separation of homologous chromosomes

2) separation of chromotides

Question 2

Name a ethical consideration that might have influenced the decision to use embryonic stem cells

Answer 2

Embryos are destroyed to get stem cells

Destruction of embryos

Question 3

Germline when they divide from mitosis they come out as

Answer 3

Diplod

Question 4

Germline when they divide from mitosis they come out as

Answer 4

Diplod

Question 5

Germline when they divide from meiosis they come out as

Answer 5

Haploid

Question 6

The role of stem cells?

Answer 6

Develop into any other type of cell

Question 7

Describe what differentiation is

Answer 7

Genes are switched on cells become specialised

Question 8

Why do red blood cells contain haemoglobin after differentiation but white blood cells don’t

Answer 8

The gene for haemoglobin is switched on in the red blood cell but not switched on in the white blood cells

Question 9

Compounds of dna also rna?

Answer 9

Phosphate group
Deoxyribose suger
Base

Phosphate group
Ribose suger
Base

Question 10

Antiparallel?

Answer 10

Strands run in opposite directions

Question 11

Where are hydrogen bonds located?

Answer 11

Between bases

Question 12

Requirements for dna replication

Answer 12

Atp
Enzyme
Primer
DNA template
Free DNA nucleotides

Question 13

Process of polymerase chain reaction
PCR

Answer 13

DNA heat at 92⁰c and 98⁰c spectate the strands

Cooled between 50⁰c and 65⁰c allows primers to bind to target DNA

Heated 70⁰c and 80⁰c for heat tolerant DNA polymerase to replicate region of DNA

Question 14

Practical uses for PRC

Answer 14

Helps to solve crimes and diagnosis genetic disorders