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AS - Level Biology Quiz on F211 biology, created by rosieoj2 on 01/03/2015.

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F211 biology

Question 1 of 14

1

what is the definition of magnification?

Select one of the following:

  • how big an object is

  • the difference between the size of the image and the size of the object

  • the degree to which the size of an image is larger than the object itself

Explanation

Question 2 of 14

1

what is the definition of resolution?

Select one of the following:

  • the degree to which it's possible to distinguish between to objects that are very close together

  • how detailed an image looks

  • how blurry an image looks

Explanation

Question 3 of 14

1

what is the resolution and magnification of a light microscope?

Select one of the following:

  • res = 2000 nm, mag = x2000

  • res = 200 nm, mag = x 1500

  • res = 200 micrometres, mag = x2000

Explanation

Question 4 of 14

1

how many micro metres is one cm equivalent to?

Select one of the following:

  • one hundred thousand

  • one million

  • ten thousand

Explanation

Question 5 of 14

1

how many nanometres is one cm equivalent to?

Select one of the following:

  • ten million

  • one million

  • one hundred million

Explanation

Question 6 of 14

1

what is the maximum magnification and resolution of a scanning electron microscope?

Select one of the following:

  • mag = x500 000, res = 0.2 nm

  • mag = x 500 000, res = 2 nm

  • mag = x100 00, res = 0.2 nm

Explanation

Question 7 of 14

1

what is the maximum magnification and resolution of a transmission electron microscope?

Select one of the following:

  • mag = x500 000, res = 0.2 nm

  • mag = x 100 000, res = 0.2 nm

  • mag = x500 000, res = 2 nm

Explanation

Question 8 of 14

1

what is a disadvantage of an electron microscope?

Select one of the following:

  • samples need to be prepared in a vacuum so electron beam is not deflected by molecules in the air

  • it has a maximum resolution which is 1000 times greater than a light microscope

  • it needs to be cleaned in ethanol daily

Explanation

Question 9 of 14

1

what is the cytoskeleton made of?

Select one of the following:

  • carbohydrate strings

  • protein fibres

  • phospholipids

Explanation

Question 10 of 14

1

what is the main role of the cytoskeleton?

Select one of the following:

  • provide stability for the cell

  • control what substances enter or leave the cell

  • restrict the movement of hydrophilic substances past the cell

Explanation

Question 11 of 14

1

how are microtubules arranged inside flagella and cilia?

Select one of the following:

  • in a ring of 9

  • in a ring of 11 with 1 in the centre

  • in a ring of 9 with 2 in the centre

Explanation

Question 12 of 14

1

what are plant cell walls made of?

Select one of the following:

  • murein

  • cellulose

  • amylose

Explanation

Question 13 of 14

1

what is the function of lysosomes?

Select one of the following:

  • to packages and modify proteins

  • produce ATP during respiration

  • contain a powerful digestive enzyme to break down waste materials

Explanation

Question 14 of 14

1

what is the highly folded inner membrane of a mitochondria called?

Select one of the following:

  • cristae

  • matrix

  • epithelium

Explanation

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