Free Cell The Unit Of Life (Daily Quiz: 15) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Which one of the following cellular parts is correctly described?

(a) Ribosomes - those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S)

(b) Thylakoids - flattened membranous sacs forming the grana of chloroplasts

(c) Centrioles - sites for active RNA synthesis

(d) Lysosomes - optimally active at a pH of about 8.5

Question-2

The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D). Select the part correctly matched with its function.

(a) Part (D) : Outer membrane - gives use to inner membrane by splitting

(b) Part (A): Matrix - major site for respiratory chain enzymes

(c) Part (B) : Inner membrane - forms infoldings called cristae

(d) Part (C) : Cristae - possess single circular DNA molecule and ribosomes

Question-3

Ribosomes were discovered by

(a) Porter

(b) Golgi

(c) de Robertis

(d) Palade

Question-4

Microtubules are the constituents of:

(a) Spindle fibres, Centrioles and Cilia

(b) Cilia, Flagella and Peroxisomes

(c) Centrioles, Spindle fibres and Chromatin

(d) Centrosome, Nucleosome and Centrioles

Question-5

Select the wrong statement from the following.

(a) The chloroplasts are generally much larger than mitochondria.

(b) Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane.

(c) Both chloroplasts and mitochondria contain DNA.

(d) Both chloroplasts and mitochondria contain an inner and an outer membrane.