Proteins that are to be used outside the cell are synthesized:

1. in the mitochondria

2. on the rough endoplasmic reticulum

3. on the smooth endoplasmic reticulum

4. on free ribosomes

The two types of cellular organelles that transform energy are:

(1) Chromoplasts and Leucoplasts

(2) Mitochondria and Chloroplasts

(3) Mitochondria and Endoplasmic reticulum

(4) Chloroplasts and Golgi apparatus

The arrangement of outer and central microtubules in a cilium is called the:

1. 9 + 1 pattern

2. 9 + 0 pattern

3. Flagellin pattern

4. 9 + 2 pattern

Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

(1) Lysosome

(2) Ribosome

(3) Chloroplast

(4) Mitochondrion

Select the mismatch.

1. Gas vacuoles — Green bacteria Cells

2. Large central vacuoles — Animal cells

3. Protists — Eukaryotes

4. Methanogens — Prokaryotes

Microtubules are the constituents of

(1) spindle fibres, centrioles and cilia

(2) centrioles, spindle fibres and chromatin

(3) centrosome, nucleosome and centrioles

(4) cilia, flagella and peroxisomes

Mitochondria and chloroplast are

I.semi-autonomous organelles.

II. formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery.

Which one of the following options is correct?

(1) Il is true but I is false

(2) I is true but ll is false

(3) Both I and I are false

(4) Both I and II are correct

A complex of ribosomes attached to a single strand of RNA is known as

(1) polymer

(2) polypeptide

(3) okazaki fragment

(4) polysome

Which of the following is not a feature of the plasmids?

(a) Circular structure

(b) Transferable

(c) Single-stranded

(d) Independent replication

Water soluble pigments found in plant cell vacuoles are

(1) chlorophylls

(2) carotenoids

(3) anthocyanins

(4) xanthophylls