Grade 9 Unit 2

Question 1

Who discovered the first light microscope

Answer 1

Anton van leewenhoek

Question 2

What is the measure of how much detail a microscope can show

Answer 2

Resolving power

Question 3

What is the technique of preparing object or specimen to be seen under microscope

Answer 3

Mounting

Question 4

Environmental change that makes an organism respond

Answer 4

Stimuli

Question 5

Reaction of an organism to stimuli

Answer 5

Response

Question 6

What is z genetic material which contain instruction for making an organism

Answer 6

Chromosomes

Question 7

What is also known as lipo protein layer

Answer 7

Cell membrane

Question 8

Network of internal membranes extending thru cytoplasm

Answer 8

ER

Question 9

What is ribosome composed of

Answer 9

RNA n proteins

Question 10

What r 3 parts of plastids

Answer 10

Leucoplast, chromoplast, chloroplast

Question 11

What is the living part of cell consisting of cytoplasmic structures n nucleus

Answer 11

Protoplasm

Question 12

Component of bacterial cell wall

Answer 12

Murein

Question 13

T / F
Using a light microscope takes skill and practice

Answer 13

T

Question 14

T/F
specimens are always fixed with electron microscope

Answer 14

T

Question 15

light microscopes only living/non-living materials need fixation

Answer 15

non-living

Question 16

links the nucleus of a cell with the cell membrane

Answer 16

endoplasmic reticulum

Question 17

Which organelles cannot be seen easily with a light microscope

Answer 17

Mitochondria, endoplasmic reticulum and ribosome

Question 18

cells adapted to carry out a particular bodily function

Answer 18

specialised cells

Question 19

cells cells that have not yet assumed their final functional characteristics

Answer 19

undifferentiated cells

Question 20

cells from the early embryo that have the potential to form almost any other type of cell

Answer 20

embryonic stem cells

Question 21

cells arranged in one or more layers to form part of a covering or lining of a body surface

Answer 21

epithelial cells

Question 22

short, arm-like protuberances of a nerve cell

Answer 22

dendrites

Question 23

extension of a neuron that transmits messages

Answer 23

axon

Question 24

elongated contractile cells that form muscle

Answer 24

muscle cells

Question 25

strands of protein that enable muscles to contract

Answer 25

muscle fibres

Question 26

A system that shows or measures osmosis is an

Answer 26

osmometer

Question 27

The rate of active transport depends on the rate of .....

Answer 27

respiration

Question 28

T/F Both osmosis and diffusion can be demonstrated experimentally in the laboratory

Answer 28

T

Question 29

how much detail the microscope is able to show

Answer 29

resolving power

Question 30

most common type of electron micrograph you will see is produced by

Answer 30

transmission electron microscope

Question 31

For ....... microscopes only non-living materials need fixation, while living materials are not fixed

Answer 31

light

Question 32

T/F Specimens are always fixed with electron microscopes

Answer 32

T

Question 33

Animals move using ....., plants move more slowly using ......

Answer 33

muscles, growth

Question 34

is vital to the long-term survival of any type of living organism.

Answer 34

Reproduction

Question 35

contains the instructions for making new cells or new organisms in the form of long threads known as chromosomes.

Answer 35

nucleus

Question 36

is a three-dimensional system of tubules that spreads right through the cytoplasm.

Answer 36

endoplasmic reticulum

Question 37

a protein designed to control the rate of a very specific reaction and ensure that it takes place without becoming mixed up with any other reaction

Answer 37

enzyme

Question 38

is a space in the cytoplasm filled with cell sap, a liquid containing sugars, mineral ions and other chemicals dissolved in water.

Answer 38

vacuole

Question 39

a fluid-filled cavity inside a cell

Answer 39

vacuole

Question 40

cells that are stained ........ make hormones that help to control the sugar levels in the blood

Answer 40

pink

Question 41

cells that are stained ..... make enzymes needed to digest the food in the gut

Answer 41

red

Question 42

T/F Diffusion is a relatively slow process

Answer 42

T

Question 43

amount remaining after certain adjustments have been made

Answer 43

net