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Biology > Grade 9 Unit 2 > Flashcards

Grade 9 Unit 2 Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Who discovered the first light microscope

A

Anton van leewenhoek

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2
Q

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

A

Resolving power

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3
Q

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

A

Mounting

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4
Q

Environmental change that makes an organism respond

A

Stimuli

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5
Q

Reaction of an organism to stimuli

A

Response

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6
Q

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

A

Chromosomes

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7
Q

What is also known as lipo protein layer

A

Cell membrane

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8
Q

Network of internal membranes extending thru cytoplasm

A

ER

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9
Q

What is ribosome composed of

A

RNA n proteins

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10
Q

What r 3 parts of plastids

A

Leucoplast, chromoplast, chloroplast

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11
Q

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

A

Protoplasm

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12
Q

Component of bacterial cell wall

A

Murein

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13
Q

T / F
Using a light microscope takes skill and practice

A

T

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14
Q

T/F
specimens are always fixed with electron microscope

A

T

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15
Q

light microscopes only living/non-living materials need fixation

A

non-living

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16
Q

links the nucleus of a cell with the cell membrane

A

endoplasmic reticulum

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17
Q

Which organelles cannot be seen easily with a light microscope

A

Mitochondria, endoplasmic reticulum and ribosome

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18
Q

cells adapted to carry out a particular bodily function

A

specialised cells

19
Q

cells cells that have not yet assumed their final functional characteristics

A

undifferentiated cells

20
Q

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

A

embryonic stem cells

21
Q

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

A

epithelial cells

22
Q

short, arm-like protuberances of a nerve cell

A

dendrites

23
Q

extension of a neuron that transmits messages

A

axon

24
Q

elongated contractile cells that form muscle

A

muscle cells

25
Q

strands of protein that enable muscles to contract

A

muscle fibres

26
Q

A system that shows or measures osmosis is an

A

osmometer

27
Q

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

A

respiration

28
Q

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

A

T

29
Q

how much detail the microscope is able to show

A

resolving power

30
Q

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

A

transmission electron microscope

31
Q

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

A

light

32
Q

T/F
Specimens are always fixed with electron microscopes

A

T

33
Q

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

A

muscles, growth

34
Q

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

A

Reproduction

35
Q

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

A

nucleus

36
Q

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

A

endoplasmic reticulum

37
Q

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

A

enzyme

38
Q

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

A

vacuole

39
Q

a fluid-filled cavity inside a cell

A

vacuole

40
Q

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

A

pink

41
Q

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

A

red

42
Q

T/F
Diffusion is a relatively slow process

A

T

43
Q

amount remaining after certain adjustments have been made

A

net

Biology (15 decks)

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