Free Cell The Unit Of Life (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

In each cheek cell, there is a dense membrane bound structure which contains chromosome. This structure is

(a) Golgi bodies

(b) Endoplasmic reticulum

(c) Nucleus

(d) Mitochondria

Question-2

Which one of the following cellular parts is correctly described?

(a) Thylakoids - Flattened membranous sacs forming the grana of chloroplasts.

(b) Centrioles - Sites for active RNA synthesis.

(c) Lysosomes - Optimally active at a pH of about 8.5.

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

Question-3

Assertion:
In animal cells, the lipid-like steroidal hormones are synthesized in SER.
Reason:
The smooth ER is the major site for synthesis of lipid.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-4

Golgi apparatus is concerned with

(a) secretion

(b) excretion

(c) ATP synthesis

(d) RNA synthesis

Question-5

Who was the first one to see a live cell?

(a) Leeuwenhoek

(b) Robert Hook

(c) Robert Brown

(d) None of these

Question-6

Who proposed the fluid mosaic model of plasma membrane?

(a) Schleiden and Schwann

(b) Camillo Golgi

(c) Singer and Nicolson

(d) Robert Brown

Question-7

Peptide synthesis inside a cell takes place in

(a) chromoplast

(b) chloroplast

(c) mitochondria

(d) ribosomes.

Question-8

Chromosomes having equal or almost equal arms are called

(a) acrocentric

(b) metacentric

(c) polycentric

(d) acentric.

Question-9

Functional unit of chloroplast is

(a) Oxysomes

(b) Stroma

(c) Quantasome

(d) Peroxysomes

Question-10

Which of the following organelle is exclusively found in animal cells?

(a) Chloroplast

(b) Mitochondria

(c) Vacuole

(d) Centriole