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Year 8 Science > 8D - Unicellular Organisms > Flashcards

8D - Unicellular Organisms Flashcards

1
Q

What is an organism?

A

A living thing.

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2
Q

What are the seven life processes?

A

Movement
Respiration
Sensitivity

Growth
Reproduction
Excretion
Nutrition

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3
Q

What are organisms based on?

A

Cells.

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4
Q

What does it mean to be mutlicellular?

A

To be made up of many cells.

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5
Q

How many cells are there in an adult human?

A

There are around 37 million cells.

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6
Q

What are a group of cells of the same type?

A

A tissue.

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7
Q

What is a group of different tissues grouped together?

A

An organ.

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8
Q

What is a group of organs?

A

An organ system.

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9
Q

What is a unicellular organism?

A

They are one cell that perfors all seven of the life processes.

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10
Q

What is a microorganism?

A

A unicellular organims.

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11
Q

What is diffusion?

A

The net spreading out of partials from an area of high concentration to an area of low concentration.

Down their concentration gradient.

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12
Q

How do multicellular organisms not use diffusion?

A

Multicellular organisms are large and therefore diffusion cannot be relied on as an effective and efficient mode of delivery of materials. As a result in these organisms materials are delivered directly to the tissues.

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13
Q

What is budding?

A

A type of asexual reproduction. This is when a daughter cell grows out of a parent cell.

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14
Q

What is Anaerobic respiration?

A

It is respiration without oxygen.
Anaerobic respiration of microorganisms is fermentation.

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15
Q

What is the formula for Anaerobic respiration?

A

Glucose (A Sugar) —–> Carbon Dioxide + Ethanol

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16
Q

What is Aerobic respiration?

A

It is respiration with oxygen.
It releases more energy than anaerobic respiration. It produces more carbon dioxide than anaerobic respiration.

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17
Q

What is the formula for Aerobic respiration?

A

Glucose (A Sugar) + Oxygen —–> Carbon Dioxide + Water

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18
Q

What is a Growth Curve?

A

A graphical representation that shows the course of a phenomenon over time.

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19
Q

What do yeast cells need to reproduce?

A

Moisture
Sugar
Warmth

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20
Q

What is a limiting factor

A

Something that stops or slow down a process.

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21
Q

What ae the five kingdoms of microorganisms?

A

Prokaryotes
Protoctists
Fungi
Plants
Animals

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22
Q

What are the part of a Prokaryotes?

A

Cytoplasm
Cell membrane
Cell Wall

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23
Q

What are the parts of a Protoctist?

A

Cytoplasm
Cell Membrane
Nucleus
Mitochondria
Cell Wall (some times)
Chloroplasts (some times)

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24
Q

What are the parts of a Fungi cell?

A

Cytoplasm
Cell Membrane
Nucleus
Mitochondria
Cell Wall

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25
What are the part of a Plant cell?
Cytoplasm Cell Membrane Nucleus Mitochondria Cell Wall Chloroplasts
26
What are the parts of an Animal cell?
Cytoplasm Cell Membrane Nucleus Mitochondria
27
Prokaryote are thing like...
…bacteria.
28
What are viruses?
They are not living creatures. They cannot live with out being inside a living creature. They do not carry out the life processes.
29
What is binary fussion?
It is a type of asexual reproduction. It is where one cell grows out o fa cell then splits into two identical parts.
30
What does lactic acid and milk turn into?
Yoghurt
31
What does lactic acid do?
It turns milk sour and thicker.
32
What animal kingdom do bacteria belong to?
Prokaryotes
33
What controls bacteria cells?
The chromosomes. As they do not have a nucleus.
34
What are the parts of a bacteria cell?
Circular Chromosome Flagellum Cell Wall Cell Surface Membrane Slimy Layer Cytoplasm
35
What do bacteria use flagella for?
To swim.
36
How do Flagella help the cell move forward?
They spin.
37
What are protoctists?
Unicellular
38
What are Algea?
They use photosynthesis to produce organic molecules.
39
What do all protoctists do?
They all respond to changes in their environment
40
What do most life on Earth do?
Depend on producers.
41
What is a chloroplast
It is where photosynthesis takes place. Contains Chlorophil.
42
What does Chlorophyll do?
It traps energy from the Sun.
43
What is glucose made of?
Energy from the Sun combined with carbon dioxide and water.
44
What do sea photosynthetic protoctists produce?
Poisons
45
What does the poison in sea photosynthetic protoctists?
The poison becomes concentrated in the bodies of a few large fish. Eating then causes a very large serious illness.
46
What is Ciguatera?
It is a serious illness caused by eating large fish poisoned by sea photosynthetic protoctists.
47
What is a decomposer also known as?
A Microorganism.
48
What does a decomposer do?
It breaks down dead organism and animal waste in the process of decay.
49
What are the different types of decomposers?
Fungi Bacteria Protoctists
50
What do microorganisms use some digestive molecules for?
Respiration and Growth.
51
Where are kitchen and garden waste often put?
Compost heaps.
52
What do compost bins aim to do?
They decay this materials to form compost which contains nutrient.
53
What do some Protoctists have?
Chloroplasts - plants Cell wall - Plants
54
What is needed in Aerobic respiration?
Provides energy Mitochondria Needs Oxygen Needs Glucose Releases Carbon Dioxide
55
In an aerobic respiration Glucose + Oxygen ------->
-------> Carbon Dioxide + Water
56
What is an example of anaerobic respiration?
Fermentation
57
In an anaerobic respiration Glucose ------->
Carbon Dioxide + Ethanol
58
What is the Equation for Photosynthesis?
Carbon Dioxide + Water ------Sunlight-------->Glucose + Oxygen
59
What is a Flagella?
Helps to move
60
What is a Pseudopod?
A fake leg that helps move.
61
What is a eye spot for?
Helps get light
62
What is a producer?
They are the organism on the food chain.

Year 8 Science (7 decks)

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