science

Question 1

find the total magnification of -
eye piece magnification = x 10
objective magnification = x 20

Answer 1

= 200

Question 2

respiration word equation?

Answer 2

glucose + oxygen —> carbon dioxide + energy

• occurs in mitochondria

Question 3

photosynthesis word equation?

Answer 3

Carbon dioxide + water —–> glucose + oxygen

• occurs in mitochondria

Question 4

interphase?

Answer 4

cells preparing to divide genetic materials. doubles to form chromosomes.

Question 5

prophase?

Answer 5

chromosomes pair up

Question 6

metaphase?

Answer 6

chromosomes meet in the middle

Question 7

anaphase?

Answer 7

chromosomes get pulled apart

Question 8

telophase?

Answer 8

now there are two

Question 9

mitosis?

Answer 9

repair, reproduction and growth.

the process of cell division

Question 10

cell wall?

Answer 10

the tough covering around a plant cell - holds them in shape and gives the cell strength. made up of cellulose.

Question 11

vacuole?

Answer 11

an organelle used to store water and dissolved substances. the mixture inside the vacuole is cell sap

Question 12

cells?

Answer 12

animals, plants and other living things are made up of cells

Question 13

chloroplasts?

Answer 13

oval shaped organelles found only in plant cells. contain a green substance called chlorophyll. chloroplasts use energy from the du to make food.

Question 14

cell membrane?

Answer 14

the thin layer that closers cytoplasm

Question 15

nucleus?

Answer 15

the control centre of the cell. contains DNA in the form of chromosomes and controls what the cell does and when.

Question 16

cytosol?

Answer 16

the jelly like substances inside cells

Question 17

cellulose?

Answer 17

the cell walls of plants are made of this

Question 18

respiration?

Answer 18

a chemical substance that releases energy. it occurs in mitochondria. glucose reacts with oxygen which results in carbon dioxide and water

Question 19

multicellular organisms?

Answer 19

made up of many cells eg animals, plants, humans

Question 20

unicellular?

Answer 20

only has one cell eg some bacteria

Question 21

why are there different types of cells?

Answer 21

for different jobs eg muscle cells, sperm cells

Question 22

a group of similar cells make up?

Answer 22

tissues

Question 23

different types of tissues form?

Answer 23

organs