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all terms Flashcards

bio chimie physique

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Biology 101 flashcards
1
Q

movement

A

an action by an organism causing a change of position or place

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2
Q

sensitivity

A

the ability to detect and respond to changes in the environment

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3
Q

growth

A

a permanent increase in size

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4
Q

reproduction

A

the process that make more of the same kind of organism

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5
Q

excretion

A

removal of excess toxic waste and substances from organisms

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6
Q

nutrition

A

taking in of materials for energy growth and development

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7
Q

egestion

A

passing out food that has not been digested as faeces

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8
Q

absorption

A

the movement of digested food molecules through the wall of the intestine into the blood

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9
Q

food web

A

a network of many food chains

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10
Q

food chain

A

a diagram showing the flow of food from one organism to the next beginning with a producer

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11
Q

asexual reproduction

A

genetically identical offspring made from one parent

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12
Q

catalyst

A

a substance that increases the rate of a chemical reaction and isn’t changed by the reaction

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13
Q

carnivore

A

an animal that get energy from eating other animals

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14
Q

consumer

A

organism that gets energy by eating other organisms

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15
Q

respiration

A

the chemical reactions in cells that break down nutrient molecules and release energy

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16
Q

decomposer

A

an organism that gets its energy from dead or waste organic matter

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17
Q

digestion

A

the breakdown of large insoluble food molecules into small water-soluble molecules using mechanical and chemical processes

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18
Q

diffusion

A

net movement of molecules and ions from a region of higher concentration to a region of lower concentration down a concentration gradient as a result of their random movement

19
Q

gravitropism

A

plant growing towards or against gravity

20
Q

herbivore

A

an animal that gets energy from eating plants

21
Q

hormone

A

a chemical substance made by a gland carried by blood that alters the activity of one or more specific target organs and is then destroyed by the liver

22
Q

ingestion

A

taking substances into the body through the mouth

23
Q

mutation

A

a change in gene or chromosome

23
Q

pollination

A

transfer of pollen grains from male part (anther of stamen) to female part (stigma)

24
Q

photosynthesis

A

a process where plants make carbs from raw materials using energy from light

25
Q

phototropism

A

plant grows towards or away from light source

26
Q

producer

A

an organism that makes its own organic nutrients through photosynthesis

27
Q

sexual reproduction

A

process of fusing nuclei of 2 gametes/sex cells to form a zygote.

28
Q

acid

A

substance that dissolves in water to make a solution that turns litmus red, has ph less than 7 & contains excess of h+ ions

28
Q

transpiration

A

loss of water from plant leaves by evaporation at the surface of mesophyll cells followed by diffusion of water vapour through stomata

29
Q

alkali

A

a substance that dissolves in water to make a solution that makes litmus blue, ph more than 7, excess of OH- ions

30
Q

cytoplasm

A

jelly liquid made of 70% water with a lot of proteins dissolved in it so mane metabolic reaction made in cytoplasm

30
Q

cell membrane

A

protect and organise cells and is semi permeable

31
Q

nucleus

A

genetic info stored on chromosomes that are made of dna in the nucleus

32
Q

cell wall

A

made of cellulose to support the cell outside membrane

33
Q

chloroplast

A

contain star grains from photosynthesis have chlorophyll

34
Q

chlorophyll

A

green pigment found in leaves

35
Q

vacuole

A

hole in cell that contains cell sap

36
Q

osmosis

A

diffusion of water molecules

37
Q

benedicts solution

A

test for reducing sugar (carbs) red if present blue if absent

38
Q

iodine test

A

test for starch orange colour no starch blue-black colour starch

39
Q

fat test

A

ethanol emulsion test fat present milky no fat clear

40
Q

enzyme

A

control all the reactions in a cell and control/speed up metabolism to support life

41
Q

protein test

A

biuret solution is blue and stays blue if no protein purple if protein

combined science (1 decks)

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