Cell Biology (biology) Flashcards

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1
Q

What’s the function of the nucleus?

A

Contains the cells DNA. Controls activity in the cell.

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2
Q

What’s the function of the Cell membrane?

A

Controls the passage of substances moving in and out the cell.

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3
Q

What’s the function of the Cytoplasms ?

A

It’s where the chemical reactions take place.

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4
Q

What’s the function of the Cell wall?

A

Helps maintain the cell structure and protects the cell.

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5
Q

What’s the function of the Ribosomes?

A

The Ribosomes produce protein.

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6
Q

What’s the function of the Chloroplasts?

A

Help with photosynthesis

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7
Q

What’s the function of the Vacuole?

A

Stores water and helps support the structure of the cell.

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8
Q

What’s the function of the Mitochondria?

A

Respiration occurs in the mitochondria

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9
Q

Give example of a Eukaryotic cell:

A
Eukaryotic cells are all plant and animals cells.
Key features:
-membrane bound
- large and complex
- have DNA in the nucleus
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10
Q

Bacteria are an example of……….. cells. They are small and simple and are found almost everywhere.

A

Prokaryotic

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11
Q

What is the equation to work out magnification?

A

Size of image
Magnification | Real size

Basically: magnification = image size / real size

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12
Q

What are genes?

A

Sections of DNA.

The codes for characteristics

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13
Q

Humans have ____ pairs of chromosomes.

A

23

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14
Q

Mitosis is….

A

A section of the cell cycle where one set of chromosomes are pulled to the end of the cell. This forms two (identical) nuclei.

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15
Q

Self-renewal is when…

A

A cell copies itself

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16
Q

Differentiation is when

A

A cell makes other cells to do a particular job.

These are known as specialised cells.

17
Q

Stem cells are

A

Cells that have not yet differentiated

18
Q

Potency is…

A

The measure of how many types of specialised cell a stem cell can make

19
Q

Pluripotent means…

A

Can make all kinds of specialised cells

20
Q

Multipotent can….

A

Make some but not all specialised cells

21
Q

Isotonic is…

A

When the two environments have the same concentration

22
Q

Hypertonic

A

Concentration is greater outside the cell than inside

23
Q

Hypertonic

A

Concentration is less outside than in the cell