Cell - The Unit of Life Test II

Site of actin and tubulin synthesis is

• SER

• RER

• 70S

• Polysomes in cytoplasm.

Where does glycosylation of protein occur?

• Endoplasmic reticulum

• Lysosomes

• Mitochondria

• Chloroplast

Which of the following statment is incorrect regarding ribosome?

• Can be observed through high magnification light microscope

• Appear as granular structure under the electron microscope

• Eukaryotic ribosome and prokaryotic ribosome consist only one type of common ribosomal RNA

• The three domains of progenote is based on 16S ribosomal RNA genes

One of the following is not the feature of centriole

• It has an organisation like the cartwheel

• It consists of hub and spokes made of protein

• It is a site for rRNA systhesis

• Form the basal body of cilia and flagella

Which of the following statements regarding cilia is not correct ?

• Cilia contain an outer ring of nine doublet microtubules surrounding two singlet microtubules.

• ATP is not required for ciliary movements

• Cilia are hair - like cellular appendages

• Microtubules of cilia are composed of tubulin

Homologous chromosomes can be defined as:

• Chromatids of same chromosome

• Same chromosome, same gene, different allele in different order

• Same chromosome, different gene, same allele

• Same chromosome, same gene, different allele in same order

If mitochondria is absent in mature RBC what will be the source of energy:

• TCA

• ETS

• link reaction

• Glycolysis

The shorter and longer arms of a submetacentric chromosome are referred to as

• s-arm and l-arm respectively

• p-arm and q-arm respectively

• q-arm and p-arm respectively

• m-arm and n-arm respectively

Which of the following statements is not correct?

• Lysosomes have numerous hydrolytic enzymes

• The hydrolytic enzymes of lysosomes are active under acidic pH

• Lysosomes are membrane bound structures

• Lysosomes are formed by the process of packaging in the endoplasmic reticulum

Which of the following pair of organelles does not contain DNA?

• Mitochondria and Lysosomes

• Chloroplast and Vacuoles

• Lysosomes and Vacuoles

• Nuclear envelope and Mitochondria