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General IGCSE Biology > Life Processes > Flashcards

Life Processes Flashcards

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1
Q

What are the Eight life processes?

A 
Movement             
Respiration
Reproduction         
Excretion 
Sensitivity              
Nutrition
Growth                 
Control
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2
Q

What do all cells contain? (3)

A

Nucleus
Cell membrane
Cytoplasm

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3
Q

What does an Animal cell contain? (4)

A

Nucleus
Cell membrane
Cytoplasm
Mitochondria

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4
Q

What does a Plant cell contain? (7)

A 
Nucleus                 
Vacuole
Cell membrane         
Chloroplasts
Cytoplasm
Mitochondria 
Cell wall
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5
Q

Organelles -
Cytoplasm -
Nucleus -

A

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.

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6
Q

Cell membrane -

Mitochondria -

A

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

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7
Q

Cell wall -

Vacuole -

A

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

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8
Q

Chloroplasts -

A

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

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9
Q

Enzymes -

A

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

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10
Q

Factors affecting Enzymes/what happens to them?

A

Temperature
pH
They denature

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11
Q

How the cell gets energy -

A

They obtain it from cell respiration

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12
Q

Reaction for respiration Aerobic -
Anaerobic -
Lactic Acid -

A

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

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13
Q

Diffusion

A

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

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14
Q

Active Transport

A

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

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15
Q

Osmosis

A

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

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16
Q

Name for a single fertilised egg

A

Zygote

17
Q

Cell division of a zygote is called

A

Mitosis

18
Q

Tissue
Organ
Organ system

A

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

19
Q

The 7 types of systems

A 
Digestive
Respiratory
Circulatory
Excretory
Nervous
Endocrine
Reproductive

General IGCSE Biology (8 decks)

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