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Science (Biology) > Keywords > Flashcards

Keywords Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Cell

A

the smallest functional unit of an organism

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2
Q

Tissue

A

a group of cells working together e.g muscle

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3
Q

Organ

A

a group of tissues working together e.g heart, leaf

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4
Q

organ system

A

a group of organs working together e.g circulatory system

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5
Q

organism

A

Any living thing

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6
Q

Circulatory system

A

transports substances in the blood, such as oxygen and glucose, to tissues

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7
Q

Components of blood

A

Red blood cells, white blood cells, plasma, platelets

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8
Q

Red blood cells

A

Contain haemogoblin to transport oxygen, biconcave shape

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9
Q

White blood cells

A

destroy pathogens by: phagocytosis, producing antibodies, producing antitoxins (part of our immune system)

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10
Q

Platelets

A

Fragments of cells that help the blood to clot

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11
Q

Plasma

A

Straw-coloured liquid component of the blood that carries other dissolved substances such as glucose, hormones, urea

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12
Q

diffusion

A

movement of particles from an area of high concentration to an area of low concentration

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13
Q

Producers

A

Organisms that make their own food e.g. green plants

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14
Q

Photosynthesis

A

Chemical reaction, chloroplasts absorb energy from the sun to make glucose for plant cells

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15
Q

Photosynthesis equation

A

Carbon Dioxide + water -> glucose+oxygen

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16
Q

Transpiration

A

Movement of water from roots, through the xylem, to the leaves pulled by evaporation out of the stomata in leaves.

17
Q

Translocation

A

Movement of glucose (sugar) in the phloem in all directions

18
Q

Prokaryotic cell

A

Has no nucleus or membrane-bound organelles such as mitochondria

19
Q

Eukaryotic cells

A

Store their DNA as chromosomes in a nucleus

20
Q

Pathogen

A

A microorganism that causes disease

21
Q

How bacteria makes us ill

A

Reproduce rapidly and release toxins

22
Q

How viruses make us ill

A

Reproduce inside our cells so that they burst

23
Q

Fertilisation

A

When a male and female sex cell fuse to create a zygote - this can develop into an embryo and then a foetus

24
Q

Male sex hormone

A

Testosterone

25
Q

Female sex hormone

A

Oestrogen

Science (Biology) (2 decks)

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