Cells

Question 1

Give one potential risk of using stem cells in medical cloning?

Answer 1

They may become contaminated with a virus, which could be passed on to the patient and so it could make them sicker.

Question 2

what are found in plant cells, that aren’t found in animal cells?

Answer 2

Cell wall, Vacuole and Chloroplast.

Question 3

what is the function of Ribosomes.

Answer 3

Produces protein.

Question 4

what is the function of Mitochondria?

Answer 4

Uses energy for respiration.

Question 5

What is the function of the Nucleus?

Answer 5

Controls cell activity.

Question 6

What is the function od the Cell Membrane?

Answer 6

Controls what goes in and out the cells and holds the cell together.

Question 7

What is the function of the Cell Wall?

Answer 7

Strengthens the cell.

Question 8

What is the function of the Cytoplasm?

Answer 8

Chemical reactions take place.

Question 9

High concentration to low concentration.

Answer 9

Diffusion?

Question 10

Higher water concentration to a low water concentration.

Answer 10

Osmosis?

Question 11

Active Transport?

Answer 11

Low concentration to a high concentration.

Question 12

Cell Division?

The division of a cell into two daughter cells with the same genetic information.

Answer 12

• DNA is found in the nucleus.
• Chromosomes make up the DNA.
• Different chromosomes determine different characteristics such as: eye colour, hair colour.

Question 13

Mitosis?

Answer 13

This is to do with the growth and repair of cells.

Question 14

chromosomes?

Answer 14

chromosomes come as pairs and we have 23 pairs. You get 23 from the sperm and 23 in the egg. In total we have 46 chromosomes.

Question 15

3hrs x 60 = 180minutes

180 divided by 30 = 6 divisions

2 x 2 x 2 x 2 x 2 x 2 = 64

Answer 15

Brinary Fission?

Question 16

Clone?

Answer 16

something that is genetically the same is known as a clone.

Question 17

Order of Brinary Fission?

Answer 17

Parent cell
1) Plasmid (contains extra information). Contains DNA and plasmid.
2) Each DNA make a copy of itself.
3) Move to opposite ends.
4) The cell begins to divide.
5) There are a variable amount of plasmid. They will contain the same amount of DNA.
2 daughter cells.

Question 18

Contain haemoglobin to carry oxygen to the cells.

It has a thin outer membrane to let oxygen diffuse through easily. The shape increases the surface area to allow more oxygen to be absorbed efficiently.

Answer 18

Red Blood Cells?

Question 19

Palisade leaf cell?

Answer 19

Absorbs light energy for photosynthesis. Packed full of chloroplasts. Regular shaped, closely packed cells form a continuous layer for efficient absorption of sunlight.

Question 20

Egg cell?

Answer 20

To join with male cell and then to provide food for the new cell that’s been formed. Large and contains lots of cytoplasm.

Question 21

Sperm cell

Answer 21

Fertilizes an egg cell. The head contains the genetic information. The middle section is packed with mitochondria for energy. The tail moves the sperm to the egg.