Cells Flashcards

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1
Q

What is the size of an animal cell?

A

0.01mm - 0.05mm

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2
Q

What is the size of a plant cell?

A

0.01mm-0.010mm

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3
Q

What is the best unit to measure cells?

A

um - micrometres

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4
Q

Cell magnification equation

A

image size = magnification x real size

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5
Q

If cells are in the mm then how are sub cell structures measured?

A

nano metres—nm

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6
Q

What are the main reasons for cell division?

A
  1. organism grows
  2. organism become damaged and needs to produce new cells
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7
Q

What is the 5th stage of the cell cycle?

A

The cyctoplasm and two cell membranes divide to form two identical cells.

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8
Q

What is the first stage of the cell cycle?

A

Cell growth

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9
Q

What is the fourth stage of the cell cycle?

A

Mitosis

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10
Q

What is the third stage of the cell cycle?

A

More growth takes place and the DNA is ckecked for errors

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11
Q

What is the second stage of the Cell Cycle?

A

DNA synthesis,which makes the chromosomes now double stranded.

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12
Q

What is the sixth stage of the cell cycle?

A

The cell stops dividing

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13
Q

What is the sixth stage of Mitosis

A

Trick question,there are only five stages

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14
Q

What is the first stage of mitosis?

A

The cell begins to divide.

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15
Q

What is the third stage of mitosis?

A

The nuclear membrane breaks down and the chromosomes line up across the cell.

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16
Q

What is the fourth stage of mitosis?

A

One set of chromosomes is pulled to each end of the cell and the nucleus divides

17
Q

What is the last stage of mitosis the same as?

A

The fifth stage of the cell cycle.

18
Q

What is the second stage of mitosis?

A

The DNA replicates to form two copies of each chromosomes

19
Q

What is the fifth stage of mitosis?

A

The cyctoplasm and two cell membranes divide to form two identical cells.

20
Q

How and why do cells become specialised?

A

Cells specialise by developing different sub-cellular structures in order to carry out specific functions