Question # 1

Chloroplast is bounded by ................ membrane.

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Single

Double

Triple

None

Cytoplasm is composed of _______________water.

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10%

30%

60%

90%

Lignin is present in:

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Primary wall

Secondary wall

None of above

Electron beam is used in

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SEM

TEM

Both

None

The movement of molecules against the concentration gradient is called:

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Diffusion

Passive transport

Active transport

Endocyosis

Rough endoplasmic reticulum is the area in a cell where _________ are synthesized.

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Polysacchrides

Proteins

Lipids

DNA

The _________ is a major component of plant cell walls.

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Chitin

Peptiodglycan

Cellulose

Cholesterol

There are _______________ chromosomes in humans.

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46

18

16

23

There are _______ micrometers in one millimeter.

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10

100

1000

1000000

Which one are the sites of protein synthesis?

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Nucleus

Mitochondria

Endoplasmic reticulum

Ribosomes

The mitochondrion function in:

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Lipid storage

Proteinsynthesis

Photosynthesis

Cellular respiration

........... was the 1st person to observe cells with a small microscope.

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Robert Hooke

Leeuwenhoek

Dolland

Robert Brown

The cells used for secretion of hormones are:

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Muscles cells

Nerve cells

Grand cells

RBCs

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Biology 9th Class English Medium Chapter 4 Online Test MCQs With Answers

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