HP TET TGT Medical 2021 Biology Test (Cell The Unit of Life)

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1. In flagella membrane, which enzyme catalysis ATP activity?

Cytoplasmicdyenin

Asconicdynein

Kinesis

Myosin

2. One turn of the helix in a B-form DNA is approximately

20 nm

0.34 nm

3.4 nm

2 nm

3. Three of the following statements regarding cell organelles are correct, while one is wrong. Which one is wrong?

Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes

Endoplasmic reticulum consists of a network of membranous tubule and helps in transport, synthesis and secretion

Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesising machinery

Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids

4. The crystals of calcium carbonate deposit in the cell is called

Aleurone

Crystalloid

Globoid

Core type

5. Difference between prokaryote and eukaryote is in

Cell size

Cell shape

Chemical composition of protoplasm

Organisation of nuclear material

6. In which cell organelles, a lipoprotein covering is absent?

Ribosomes

Lysosomes

Mitochondria

Peroxisomes

7. Which one of the following is correctly matched?

Frederick Griffith – Discovered the phenomenon of transformation

Linus Pauling – Isolated DNA for the first time

Francis Crick – Proposed one gene-one polypeptide hypothesis

George Beadle – Proposed the concept of inborn errors

8. In DNA, which of the following is absent?

Adenine

Thymine

Guanine

Uracil

9. The non-membranous organelles are

Centrioles

Ribosomes

Nucleolus

All of these

10. Centrosome is not present in

Cell of higher plants

Cell of lower plants

Cell of higher animals

Cell of lower animals