Biology : Cell : The Unit of Life

Match the Column I with that of Column II and choose the correct combination from the options given.

Column I	Column II
A.  Rough ER	1.  Synthesis of glycoproteins
B. Smooth ER	2. Aerobic respiration
C. Mitochondria	3. Synthesis of lipid
D. Golgi apparatus	4. Protein synthesis

• A - 1; B - 2; C - 3; D - 4

• A - 2; B - 3; C - 4; D - 1

• A - 3; B - 4; C - 2; D - 1

• A - 4; B - 3; C - 2; D - 1

• A - 4; B - 3; C - 2; D - 1

Which of the following cell organelle is excluded from endomembrane system?

• Endoplasmic reticulum

• Mitochondria

• Golgi complex

• Lysosomes

• Lysosomes

What is a nucleosome?

• A vesicle containing positively charged histones within nucleolus

• They are similar to endosomes

• A structure formed by wrapping of negatively charged DNA around positively charged histone octamer

• They are the transforming principles discovered by Griffith

• They are the transforming principles discovered by Griffith

The smooth endoplasmic reticulum is the major site for synthesis of

• Protein

• Lipid

• Glycoproteins

• Carbohydrates

• Carbohydrates

Which of these is wrongly matched?

• 70 S ribosomes — Prokaryotes

• 80 S ribosomes — Eukaryotes

• Axoneme — Cilia

• Centromere — Centrosome

• Centromere — Centrosome

Which of the following statements is not correct?

• 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

• Lysosomes have numerous hydrolytic enzymes

The concept of “Omnis cellula-e cellula” regarding cell division was first proposed by

• Theodore Schwann

• Schleiden

• Aristotle

• Rudolf Virchow

Which of the following statements regarding mitochondria is incorrect?

• Enzymes of electron transport are embedded in outer membrane.

• Inner membrane is convoluted with infoldings.

• Mitochondrial matrix contains single circular DNA molecule and ribosomes.

• Outer membrane is permeable to monomers of carbohydrates, fats and proteins.

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

• p-arm and q-arm respectively

• q-arm and p-arm respectively

• m-arm and n-arm respectively

• s-arm and l-arm respectively

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

• Chloroplast and Vacuoles

• Lysosomes and Vacuoles

• Nuclear envelope and Mitochondria

• Mitochondria and Lysosomes