Cells

Question 1

What is a cell?

Answer 1

A cell in the smallest working unit of a living thing (organism)

Question 2

What are the characteristics of living things ?

Answer 2

Movement , reproduction , sensitivity , feeding , excretion , respiration and growth

Question 3

What is a rough estimation of how many cells are in living thing?

Answer 3

Billions of cells

Question 4

What object is needed to see a cell?

Answer 4

A microscope

Question 5

Who was the first person to use a microscope to see a cell?

Answer 5

Robert Hooke

Question 6

What are the different types of cells ?

Answer 6

Blood cells , skin cells , animal cell , nerve cells and sperm cells

Question 7

Who has cells?

Answer 7

All living things

Question 8

What does unicellular mean ?

Answer 8

Made up of just one cell eg.Bacteria

Question 9

What is a multicellular ?

Answer 9

Made up of many cells , eg.Human

Question 10

What is the function of the eyepiece ? (microscope)

Answer 10

The eyepiece is used to magnify and view the specimen.

Question 11

What are the parts of a microscope ?

Answer 11

Eyepiece , course focus wheel , fine focus wheel , stage , objective lens , light and nosepiece

Question 12

What is the function of the course focus wheel ? (Microscope)

Answer 12

It is used to focus the specimen roughly

Question 13

What is the function of the fine focus wheel ? (Microscope)

Answer 13

It is used to fine-tune the image of the specimen

Question 14

What is the function of the stage ? (Microscope)

Answer 14

It is used to hold the specimen (glass slide)

Question 15

What is the function of the objective lens? (Microscope)

Answer 15

Is is used to magnify the specimen

Question 16

What is the function of the light ? (Microscope)

Answer 16

It’s is used to see the specimen

Question 17

What is the function of the nosepiece ? (Microscope)

Answer 17

It allows use of different lenses

Question 18

What are the parts of the animal cell?

Answer 18

Ribosome , cell membrane , nucleus , cytoplasm and mitochondria

Question 19

What is the function of the cell membrane?

Answer 19

It’s is mostly made up of fat , it protects the cell and allows substances in and out of the cell

Question 20

What is the function of the nucleus?

Answer 20

It carries genes , which control the activities of the cell

Question 21

What is the function of te cytoplasm?

Answer 21

It is a watery fluid of salts and food in which cells float

Question 22

What is the function of the mitochondria?

Answer 22

Where the energy is released from food in respiration

Question 23

What is the function of the ribosome ?

Answer 23

It makes proteins ie)hormones and enzymes

Question 24

What equipment do u need for the cheek cell experiment ?

Answer 24

Microscope , cheek cells , cotton bud , methylene blue , slide and cover slip

Question 25

What is the method of the cheek cell experiment?

Answer 25

First you gently scrape the inside of your cheek with a cotton bud. Then rub the stick gently across the clean glass slide , let is dry onto the slide. Then add on drop of methylene blue stain on the cheek cells. Tilt the slide so that the stain covers the cheek cells. Lastly , place a cover onto the slide at a 45 degrees and lower it gently to avoid air bubbles

Question 26

How do u calculate the magnification caused by a light microscope?

Answer 26

You multiple the eyepiece magnification by the objective lens magnification.

Question 27

What is the function of a cell wall ? (Plants cell)

Answer 27

It’s is made up of cellulose and is provides extra protection for the cell.