Modual 1 Cells And Movement Of Substances

Question 1

How do you calculate the total magnification

Answer 1

Eyepiece lens X objective lens

Question 2

Define the term resolution

Answer 2

Resolution is the ability to distinguish between two separate points in an image

Question 3

What is the role of the nucleus

Answer 3

Contains DNA in the form of chromosomes contains the genetic code

Question 4

What is the role of cytoplasm in a cell

Answer 4

This is where chemical reactions take place

Question 5

What is the function of a cell membrane

Answer 5

Controls the substances that enters and leave the cell

Question 6

What is the function of mitochondria in cells

Answer 6

This is the site of respiration. Glucose + Oxygen–> carbon dioxide + water vapour + ATP energy.

Question 7

Define the word magnification

Answer 7

Magnification is how much bigger an image is compared to its actual size. Can be calculated via the iAM triangle

Question 8

Function of the cellulose cell wall

Answer 8

This is the outer most part of a plant cell made of cellulose. It gives the plant support and strength.

Question 9

Why are the ribosomes needed in a cell?

Answer 9

Ribosomes are the site (location) where the proteins are made.

Question 10

What is the function of chloroplast in plant cells?

Answer 10

Chloroplast contains a green chemical which traps sun light energy this is needed for photosynthesis

Question 11

What is the function of a vacuole

Answer 11

This stores food within a plant cell

Question 12

What is a Eukaryote

Answer 12

This is a more complex version(evolved) of a prokaryotes eukaryotes contain a nucleus and much larger.

Question 13

What is a Prokaryote

Answer 13

This is the oldest cell type , it lacks a nucleus and is small and simple.

Question 14

What is diffusion

Answer 14

This is the transport of particles form an area of high concentration to and area of low concentration.

Question 15

What does turgid mean

Answer 15

When a cell has to much liquid in it and it either bursts or becomes extremely swollen.

Question 16

What does Concentrated mean

Answer 16

This is when there s two much of one fluid in a cell and it shrivels up.

Question 17

What is lysis

Answer 17

When an animal cell burst due to to much sugar bursting an animal cell by osmosis

Question 18

What is Active transport?

Answer 18

Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration. In active transport, particles move against the concentration gradient - and therefore require an input of energy from the cell.

Question 19

What are the adaptation

Answer 19

Blood arriving in the alveoli has a higher carbon dioxide concentration which is produced during respiration by the body’s cells. However, the air in the alveoli has a much lower concentration of carbon dioxide, meaning there is a concentration gradient which allows carbon dioxide to diffuse out of the blood and into the alveolar air.