The nature and variety of living organism Flashcards

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1
Q

MRS C GREN

A

movement
respiration
sensitivity
control
growth
reproduction
excretion
nutrition

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2
Q

autotroph

A

organisms that create their own food for energy by photosynthesis.

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3
Q

heterotroph

A

organisms that consume other organisms to obtain energy.

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4
Q

aerobic respiration formula

A

glucose + oxygen = carbon dioxide + water

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5
Q

what are three waste products of excretion in animals?

A

Carbon dioxide from respiration
Water from respiration and other chemical reactions
Urea which contains nitrogen resulting from the breakdown of proteins

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6
Q

waste products excreted by plants

A

Oxygen from photosynthesis
Carbon dioxide from respiration
Water from respiration and other chemical reactions

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7
Q

what are the 4 eukaryotic organisms

A

fungi, plant, animals and protoctist

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8
Q

what are the 2 types of prokaryotic organisms

A

virus and bacteria

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9
Q

what are the main features of animals

A

They are multicellular
Their cells contain a nucleus with a distinct membrane
Their cells do not have cellulose cell walls
Their cells do not contain chloroplasts (so they are unable to carry out photosynthesis)
They feed on organic substances made by other living things
They often store carbohydrates as glycogen
They usually have nervous coordination
They are able to move from place to place

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10
Q

nucleus

A

stores the genetic material (DNA) which controlls the activities of the cell.

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11
Q

cytoplasm

A

slimy substance where most of the chemical reactions inside the cell take place, including anaerobic respiration

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12
Q

cell membrane

A

holds the cell together, and controls which substances go in and out of the cell.

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13
Q

ribosome

A

organelle found in the cytoplasm which the site of protein synthesis.

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14
Q

mitochondria

A

site of aerobic respiration, where energy is released to fuel cellular processes.

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15
Q

what are the main features of plants?

A

They are multicellular
Their cells contain a nucleus with a distinct membrane
Their cells have cell walls made out of cellulose
Their cells contain chloroplasts (so they can carry out photosynthesis)
They feed by photosynthesis
They store carbohydrates as starch or sucrose
They do not have nervous coordination
A typical plant cell, IGCSE & GCSE Biology revision notes

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16
Q

cell wall

A

gives cell extra support, defining its shape.

17
Q

chloroplasts

A

contains green chlorophyll pigments to absorb light energy and the enzymes needed for photosynthesis