Cell Differentiation

Question 1

What are the four main cells in your body

Answer 1

Blood cells, Skin cells, Nerve cells, Bone cells

Question 2

what are identical cells called

Answer 2

stem cells

Question 3

when do stem cells start to specialise

Answer 3

When you are at about 8 cells big

Question 4

why does differiation happen

Answer 4

when DNA switches On and Off and the cells start making different proteins

Question 5

how do I determin a cell with dna

Answer 5

what areas the dna is switched

Question 6

what are the stem cells called that exist past the embryo

Answer 6

Adult stem cells

Question 7

How many cells can adult stem cells form

Answer 7

tissue cells

Question 8

what do adult stem cells do?

Answer 8

maintain the bodies tissues and organs

Question 9

what can adult stem cells do indefinitely

Answer 9

divide and reproduce

Question 10

how many red blood cells do we create every second

Answer 10

2,000,000 blood cells

Question 11

what percentage of plasma is found in blood

Answer 11

52-62%

Question 12

what percentage of white blood cells and platelets is in blood

Answer 12

<2%

Question 13

what percentage of red blood cells is found in blood

Answer 13

38-48%

Question 14

What is differentiation mainly used for in adult humans

Answer 14

Repair and replacement

Question 15

where are Meristems found?

Answer 15

Tips of growing roots and shoots

Question 16

what can Meristems do?

Answer 16

They can differentiate to form any type of specialized plant cell

Question 17

What are two specialized plant cells?

Answer 17

Xylem and Phloem

Question 18

What is tissue culture?

Answer 18

Tissue culture is where a meristem tissue is taken and a whole new plant is grown from it

Question 19

What is tissue culture used for?

Answer 19

commercial cloning meaning plants are cloned for increased profits