Biology - Comprehensive Mock Test 60

Question 591 Medium

Comparing small and large cells, which statement is correct?

A) Small cells have a small surface area per volume ratio B) Exchange rate of nutrients is fast with large cells C) Small cells have a large surface area per volume ratio D) Exchange rate of nutrients is slow with small cells

---

Solution Breakdown:

No Details

Question 592 Hard

The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

A) Through elimination of repetitive DNA B) Deletion of non-essential genes C) Super-coiling in nucleosomes D) DNAse digestion

---

Solution Breakdown:

No Details

Question 593 Hard

Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

A) Neither lipids, nor proteins can flip-flop B) Both lipids and proteins can flip-flop C) While lipids can rarely flip-flop, proteins can not D) While proteins can flip-flop, lipids can not

---

Solution Breakdown:

No Details

Question 594 Hard

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

A) Adenine, Thymine – Purines B) Thymine, Uracil – Pyrimidines C) Uracil, Cytosine – Pyrimidines D) Guanine, Adenine – Purines

---

Solution Breakdown:

No Details

Question 595 Easy

Plasmodesmata are ?

A) Connections between adjacent cells B) Lignified cemented layers between cells C) Locomotary structures D) Membranes connecting the nucleus with plasmalemma

---

Solution Breakdown:

No Details

Question 596 Medium

Which one of the following organisms is not an example of eukaryotic cells ?

A) Amoeba proteus B) Paramecium caudatum C) Escherichia coli D) Euglena viridis

---

Solution Breakdown:

No Details

Question 597 Easy

Plasma membrane is made up of ?

A) Protein, lipid, carbohydrate B) Lipid, carbohydrate C) Protein, lipid D) Protein

---

Solution Breakdown:

No Details

Question 598 Easy

Middle lamella is composed mainly of ?

A) Protein B) Hemicellulose C) Carbohydrate D) Calcium pectate

---

Solution Breakdown:

No Details

Question 599 Easy

Fluid mosaic model was given by ?

A) Robertson B) Schwann C) Dave Donson D) Singer and Nicholson

---

Solution Breakdown:

No Details

Question 600 Medium

Which one of the following also acts as a catalyst in a bacterial cell?

A) 23 sr RNA B) 5 sr RNA C) sn RNA D) hn RNA

---

Solution Breakdown:

No Details