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Biology Nat 5 > Unit 1- Cell Structure > Flashcards

Unit 1- Cell Structure Flashcards

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1
Q

What is the average cell size in micrometers if the length is 2000 µm and there are 10 cells up and down?

A

200 µm

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2
Q

What is the average length of cells if the total length is 10000 µm and there are 5 cells?

A

2000 µm

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3
Q

What is the average breadth of cells if the total breadth is 5000 µm and there are 10 cells?

A

500 µm

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4
Q

What unit is used to measure cells that are too small to measure in millimeters?

A

Micrometres (µm)

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5
Q

What is the conversion factor from millimeters to micrometers?

A

1 mm = 1000 µm

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6
Q

Which organelle is the site of aerobic respiration and ATP production?

A

Mitochondria

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7
Q

What structures do plant and animal cells have in common?

A
  • Nucleus
  • Cytoplasm
  • Plasma membrane
  • Mitochondria
  • Ribosomes
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8
Q

What additional structures do plant cells have compared to animal cells?

A
  • Cell wall
  • Vacuole
  • Chloroplasts
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9
Q

What is a plant cell wall made of?

A

Cellulose

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10
Q

What is the function of ribosomes in the cell?

A

Site of protein synthesis

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11
Q

What is the main difference between fungal cells and plant cells?

A

Fungal cells do not contain chloroplasts

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12
Q

Fill in the blank: Bacterial cells do not have a _______. But instead they have DNA stored as rings called_______.

A

Nucleus, plasmids

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13
Q

True or False: Bacterial cells contain mitochondria.

A

False

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14
Q

What does a bacterial cell wall not contain that a plant cell wall does?

A

Cellulose

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15
Q

Which organelles are absent in bacterial cells?

A
  • Nucleus
  • Mitochondria
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16
Q

What is the structure of a fungal cell wall compared to a plant cell wall?

A

Not made out of cellulose

17
Q

What is the function of the vacuole in plant cells?

A

Stores sugar and water; helps control water content

18
Q

How can you calculate the average length of cells?

A

Length divided by number of cells

19
Q

What is the average cell length if the total length is 1000 µm and there are 4 cells?

A

250 µm

20
Q

What does the cytoplasm do in a cell?

A

Where chemical reactions take place

21
Q

What is the role of chloroplasts in plant cells?

A

Allow plants to make their own food using photosynthesis

22
Q

What is the function of the nucleus in a cell

A

Contains DNA and controls all activities

23
Q

What is the function of the plasma membrane in a cell

A

Controls what substances and can enter and exit a cell

24
Q

What is the function of the cell wall

A

It helps the cell to keep its shape. It’s made of cellulose

25
Q

What is the function of chloroplasts

A

Contain a green chemical called chlorophyll which absorbs sunlight. Allow plants to make their own food using photosynthesis

Biology Nat 5 (5 decks)

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