1 Biology - Introduction to Biology

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Biology

25 Terms

1

unicellular organisms

Organisms consisting of a single cell.

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2

excretion

Removal of waste products by an organism.

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3

waste

All living organisms produce ________ that needs to be removed.

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4

Sperm

________ and egg cells fuse to form a child with combined genetic set.

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5

eg plants

Can be obtained by eating other organisms or from the environment (________ photosynthesise)

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6

Catabolism Organisms

________ break down complex molecules into simple molecules- releases energy.

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7

Cells

The smallest structural and functional units of all organisms, and are usually only visible through microscopes.

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8

Survival of organisms

________ requires food for energy and nutrients.

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9

genetic information

Parents produce sperm and egg cells, each with half the ________ that the child will receive.

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10

total of all biochemical reactions

The ________ occurring in a living organism is called metabolism.

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11

Cells

________ differentiate and have different purposes early on (skin, muscle, blood, nerve ________ etc)

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12

cell

The ________ is the smallest unit of life.

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13

Anabolism; Organisms form complex molecules from simple molecules

consumes energy

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14

Catabolism; Organisms break down complex molecules into simple molecules

releases energy

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15

Sexual

two parents

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16

Associated with mitosis

cell division

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17

Anabolism

Organisms form complex molecules from simple molecules - consumes energy.

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18

Catabolism

Organisms break down complex molecules into simple molecules - releases energy.

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19

Asexual reproduction

Offspring is produced by a single parent which inherits all the parent's genes.

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20

Sexual reproduction

Offspring is produced by the combination of sperm and egg cells from two parents

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21

Homeostasis

Regulation of internal environment to a stable level.

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22

Growth

An organism's development over time.

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23

Excretion

Removal of waste products from an organism.

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24

Unicellular organism

Composed of one cell which performs all functions required for life.

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25

Multicellular organism

Composed of more than one cell which together perform all functions required for life.

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