Biology 11, Chapter 1Cell Structure And Functions - 7

Biology 11, Chapter 1
Cell Structure And Functions - 7

1. The cloudiness or haziness of a fluid caused by individual particles (suspended solids) that are generally invisible to the naked eye, similar to smoke is called?

a) Fluidity
b) Heredity
c) Turgidity
d) Turbidity

2. Spectrophotometry is used to?

a) 2. To determine the speed of light.
b) 3. Used to know the turbidity or cloudiness.
c) 1. To determine the wavelengths of light that takes part in photosynthesis.
d) 4. Answer 1 and 3 are correct

3. The more cells e.g. microorganisms are in suspension the turbidity will be?

a) Smaller.
b) decreased
c) Will have no effect on turbidity.
d) Greater

4. The µm is the abbreviation for?

a) Micrometre, American spelling: micrometer
b) micrometer, American spelling: Micrometre
c) All answers are correct

5. The unit of microscopic measurement is?

a) Anagram
b) Angstrom
c) Micrometre
d) All of these

6. The unit of microscopic measurement micrometre is preferred to?

a) Anagram
b) Angstrom
c) Dendron
d) Micron

7. µ is the _______ letter mu?

a) Latin
b) Greece
c) English
d) Greek

8. 1 µm =?

a) 1/10000 mm
b) 1/100000 meter
c) 1/1000 mm
d) 1/100 cm

9. Most animal cells and plant cells are between?

a) 20 µm and 30 µm
b) 10 µm and 40 µm
c) 10 µm and 20 µm
d) 10 µm and 30 µm

10. The minimum distance that two points can be separated and be distinguished as two separate points by an optical instrument is called?a) Appreciation
b) Resolution
c) Articulation
d) Approximation

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