2015 Stuff Flashcards Preview

GCSE AQA Biology (old spec) > 2015 Stuff > Flashcards

Flashcards in 2015 Stuff Deck (19):
1

What's a nucleus

Controls all the activities of the cell

2

What's a cell membrane

Controls the passages of substances into and out of the cell

3

What are ribosomes

Where protein synthesis takes place

4

What are mitochondria

Structures in the cytoplasm where oxygen is used and most of the energy is released during respiration

5

What's a permanent vacuoles

Space in the cytoplasm filled with cell sap

6

What's a cell wall

Made of cellulose that strengthens the cell and gives it support

7

What are chloroplasts

Are found in all green parts of plants, they contain chlorophyll and make food by photosynthesis

8

What's aerobic respiration

Glucose + oxygen -> carbon dioxide plus water plus energy

9

What's anaerobic respiration

Glucose -> ethanol plus carbon dioxide plus little energy

10

What's diffusion

Where a net of particles spreads from the high concentration to a Laos concentration

11

What's a balanced diet

It provides need to survive including plenty of energy

12

What's an adaptation

Special features that makes an organism particularly well suited to the environment where it lives

13

What's metabolism

The series of chemical reactions or life processes in the body

14

What are the two types of cholesterol

HDL :)
LDL :(

15

What is good about cholesterol

Essential for cell membranes and many hormones

16

What's bad about cholesterol

Sticks to the lining of your arteries and leads to blood clots, heart disease and high blood pressure. It builds up fat can become obese

17

What foods contain cholesterol

Butter, cheese, crisps or burgers

18

What are anti-bodies

A blood protein produced in response to a specific antigen.

19

Put these in order of smallest to largest
Virus, glucose molecule, plant cell, animal cell, cell membrane and bacteria

Glucose molecule, cell membrane, virus, bacteria, animal cell and plant cell