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Cells -1

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Phosphorus is a structural element in

  1. proteins

  2. cytochrome

  3. carbohydrates

  4. DNA


Correct Option: D

The site of protein synthesis is

  1. lysosome

  2. mitochondria

  3. endoplasmic

  4. ribosome


Correct Option: D

Pus is a mixture of

  1. bacteria

  2. leucocytes

  3. dead tissue

  4. all of these


Correct Option: D

Which one of the following is a component of chlorophyll?

  1. Iron

  2. Manganese

  3. Magnesium

  4. Calcium


Correct Option: C

The characteristic feature of meiosis is that

  1. daughter cells have the same genetic information as the parent cell

  2. centromere are divided at anaphase II

  3. homologous chromosomes do not cross-over

  4. daughter cells have half the number of chromosomes of the parent cell (2n - n)


Correct Option: D
Explanation:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells.

Which of the following does not provide energy?

  1. Glucose

  2. Pulses

  3. Oil

  4. Vitamin


Correct Option: D

The living organisms having a single cell are known as

  1. bacteria

  2. virus

  3. unicellular

  4. protozoa


Correct Option: C

Name the fungi producing antibiotics.

  1. Penicillium expansum

  2. Penicillium digibatum

  3. Penicillium itallicum

  4. Penicillium notatum


Correct Option: D

Which of the following structures are commonly present in animal cells and not in plant cells? I. Mitochondria II. Lysosome III. Ribosome IV. Centrosome

  1. II, Ill and IV

  2. I, II and III

  3. II and IV

  4. I and III


Correct Option: C

The chief organic substance in cytoplasm is

  1. water

  2. lipid

  3. sugar

  4. protein


Correct Option: D

Plasma membrane

  1. helps in protein synthesis

  2. regulates the passage of water only into and out of the cell

  3. regulates the passage of water and dissolved substances into and out of cell

  4. protects the organelles of the plant cell


Correct Option: C

Bacteriophages are

  1. viruses

  2. bacteria

  3. worms

  4. birds


Correct Option: A

Protoplasm includes

  1. cell wall, cell membrane and nucleus

  2. cell membrane, cytoplasm and nucleus

  3. nucleus

  4. none of the above


Correct Option: B

Besides nucleus, DNA is also found in

  1. golgi bodies

  2. ribosomes

  3. lysosomes

  4. vacuoles


Correct Option: B

Animal cells lack

  1. cell membrane

  2. golgibody

  3. cell wall

  4. vacuoles


Correct Option: C

The smallest size of a cell, which can be seen unaided with naked eye, is

  1. 1m

  2. 10m

  3. 100m

  4. 1000m


Correct Option: C

The quick energy we get is stored in the form of

  1. ADP

  2. ATP

  3. glucose

  4. glycogen


Correct Option: D

Rod shaped bacteria are called

  1. vibrio

  2. bacillus

  3. cocci

  4. none of the above


Correct Option: B

Oncology is the study of

  1. viruses

  2. birds

  3. tumors

  4. bones


Correct Option: C

The molecular structure of DNA was proposed by

  1. Watson and Crick

  2. Khurana

  3. Mendel

  4. Darwin


Correct Option: A

In Paramecium, the phenomenon of cyclosis is associated with

  1. excretion

  2. locomotion

  3. digestion

  4. reproduction


Correct Option: C

Nucleus was discovered by

  1. Robert Hook

  2. Robert Brown

  3. Strasburg

  4. Van Mohl


Correct Option: B

Energy is stored in the cells as

  1. ATP

  2. DNA

  3. NADP

  4. None of the above


Correct Option: A

The smallest known cell is

  1. PPLO

  2. virus

  3. bacteria

  4. amoeba


Correct Option: A

The cell, which has double membrane system, nucleus surrounded by nuclear membrane and the other cell organelles as mitochondria, endoplasmic reticulum etc, is known as

  1. Eukaryotic cell

  2. Prokaryotic cell

  3. Unicellular

  4. None of the above


Correct Option: A
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