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Flashcards in Life Processes Deck (19)
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1

What are the Eight life processes?

Movement
Respiration
Reproduction
Excretion
Sensitivity
Nutrition
Growth
Control

2

What do all cells contain? (3)

Nucleus
Cell membrane
Cytoplasm

3

What does an Animal cell contain? (4)

Nucleus
Cell membrane
Cytoplasm
Mitochondria

4

What does a Plant cell contain? (7)

Nucleus
Vacuole
Cell membrane
Chloroplasts
Cytoplasm
Mitochondria
Cell wall

5

Organelles -
Cytoplasm -
Nucleus -

Organelles - A number of specialised structures within a cell.
Cytoplasm - Structure of the cell and Metabolic reactions
Nucleus - Controls the activity of the cell, contains the genes.

6

Cell membrane -
Mitochondria -

Cell membrane - Selectively permeable membrane, controls what enters/exits the cell.
Mitochondria - Found in cytoplasm, respiration to provide energy for the cell.

7

Cell wall -
Vacuole -

Cell wall - Holds the shape from internal pressure, freely permeable allowing water/dissolves substances to enter.
Vacuole - Filled with liquid called cell sap stores, sugars/ions/solutes

8

Chloroplasts -

Absorb light energy to turn into food through photosynthesis. Green due to chlorophyll

9

Enzymes -

Biological catalysts, speeds up reaction without being lost. Body temperature 37 degrees.

10

Factors affecting Enzymes/what happens to them?

Temperature
pH
They denature

11

How the cell gets energy -

They obtain it from cell respiration

12

Reaction for respiration Aerobic -
Anaerobic -
Lactic Acid -

glucose+oxygen>carbon dioxide+water+energy
C6 H12 O6 + O2 > CO2 + 6H2O

glucose --> ethanol + carbon dioxide + energy
C6 H12 O6 --> 2C3 H6 0H + 2CO2

Glucose --> Lactic acid + energy
C6 H12 O6 --> 2C3 H6 03

13

Diffusion

Molecules move from a region of high concentration to a region of low concentration down a concentration gradient.

14

Active Transport

The movement of molecules across a cell membrane into a region of higher concentration

15

Osmosis

Movement of water molecules from a region of high concentration to a low concentration across a semi permeable membrane.

16

Name for a single fertilised egg

Zygote

17

Cell division of a zygote is called

Mitosis

18

Tissue
Organ
Organ system

Cell with a similar function
Tissues with a similar function
Organs with a similar function

19

The 7 types of systems

Digestive
Respiratory
Circulatory
Excretory
Nervous
Endocrine
Reproductive