B1 Flashcards

1
Q

what is differentiation

A

cells changing to become specialised for there job

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2
Q

what are undifferentiated cells called

A

stem cells

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3
Q

what do chromosomes contain

A

genetic info

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4
Q

how many pairs of chromosomes are there

A

23

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5
Q

what is mitosis

A

when a cell divided

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6
Q

what are the two main stages of the cell cycle

A

growth + DNA replication
Mitosis

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7
Q

what is diffusion

A

spreading of particles from an area of high concentration to low

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8
Q

what is osmosis

A

movement of water molecules across a partially permeable membrane from a region of high water concentration to low

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9
Q

what is active transport

A

substances that are absorbed against a concentration gradient

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10
Q

substances that are absorbed against a concentration gradient from low to high is called

A

active transport

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11
Q

what is it called when a cell divides

A

mitosis

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12
Q

where are eukaryotic cells found

A

plants, fungi and protists

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13
Q

what is a eukaryote made up of

A

eukaryotic cells

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14
Q

what happens when cells differentiate

A

they aquire a different sub cellular structure

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15
Q

are bacteria cells eukaryotic or prokaryotic

A

prokaryotic

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16
Q

what is mitochondria for

A

aerobic respiration

17
Q

what happens in the cytoplasm

A

chemical reactions

18
Q

what is prokaryotic cells an example of

A

bacteria

19
Q

what do microscopes allow us to do

A

magnify

20
Q

how big are eukaryotic cells

A

10-100 micrometres

21
Q

what organelle is responsible from releasing energy

A

mitochondria

22
Q

what organelle is responsible for storing DNA

A

nucleus

23
Q

what is the process where a cell develops a new sub cellular structure to perform a specific function

A

cell differentiation

24
Q

why does chlorophyll do

A

help things synthesise