7A — Cells, Tissues, Organs And Systems

Question 1

What does MRS GREN stand for?

Answer 1

Movement
Reproduction
Sensitivity

Growth
Respiration
Excretion
Nutrien

Question 2

1) What does the cell surface membrane do?
2) What does the nucleus do?
3) What does cytoplasm do?

Answer 2

1) The cell surface membrane keeps the cell together and controls what goes into and out of the cell.
2) The nucleus controls the cell.
3) The cytoplasm is where where activities happen, including respiration (which occurs in mitochondria).

Question 3

1) What does the chloroplast do?
2) What does the cell wall do?
3) What does the vacuole do?

Answer 3

1) The chloroplasts contain chlorophyll to trap sunlight for photosynthesis.
2) The cell wall is made of cellulose and provides support.
3) The vacuole is storage face.

Question 4

1) What is the specimen on a microscope?
2) What is a stain used for?
3) What is the formula to calculate the total magnification of a microscope?

Answer 4

1) The specimen is the object that you look at.
2) A stain is used to help you see parts of the cell?
3) Total magnification = magnification of objective lens x magnification of eyepiece lens

Question 5

1) What is a tissue?

2) What is an organ?

Answer 5

1) A tissue is a group of cells that are the same, all doing the same job.
2) An organ is a group of different tissues working together to do an important job.