Topic. 1

Question 1

Cytoplasm

Answer 1

Where chemical reactions occur needed to carry out life processes

Question 2

Nucleus

Answer 2

Contains DNA, controls activity in the cell

Question 3

Mitochondria

Answer 3

Respiration occurs

Question 4

Cell wall

Answer 4

Controls what goes in and out of the cell

Question 5

Vacuole

Answer 5

Filled with cell sap and helps support the plant by keeping the cells rigid

Question 6

Chloroplasts

Answer 6

Substance that absorbs light energy needed during photosynthesis

Question 7

Cell membrane

Answer 7

Controls the movement of substances like oxygen, glucose and carbon dioxide in and out the cell

Question 8

Flagella

Answer 8

Only present in some bacterial cells, used to help move around

Question 9

Chromosomal DNA

Answer 9

Giant loop of DNA containing most of genetic material

Question 10

Plasmid DNA

Answer 10

comes in small loops and carries extra information

Question 11

Electron microscope

Answer 11

Uses a beam of electrons to magnify specimens up to 2 000 000 times. Produce clear images and helped discover more details in structured cells.

Question 12

Adenine pairs with _________
Cytosine pairs with _________
They (bases) are joined together by weak _________

Answer 12

Thymine
Guanine
Hydrogen bonds

Question 13

Mitosis

Answer 13

To make more body cells, during growth or when damaged, body cells divide.

Question 14

Steps of mitosis

Answer 14

1. Each chromosome is copied

2. When the cells divide into two, each cell gets one copy of each chromosome.

Question 15

Meiosis

Answer 15

Division of parent cell that produces genetically different haploid cells

Question 16

Steps of meiosis

Answer 16

1. Each chromosome is copied

2. The cell divides in two and then in two again. Each new cell gets a copy of one chromosome from each pair.

Question 17

Cloning

Answer 17

An example of asexual reproduction that produces genetically identical copies

Question 18

Spontaneous mutation

Answer 18

Something during the forming of the gametes goes wrong

Question 19

Induced mutation

Answer 19

Caused by environment (e.g. Radiation and cigarettes)

Question 20

Mutation

Answer 20

Change in the DNA
bad as they can change mDNA which then changes you
Good as they can repair damaged gametes