NEET Cell The Unit of Life — Set 10

Question 1

What is the role of the glycocalyx in prokaryotic cells?

Accepted Answer

The glycocalyx in prokaryotic cells is a polysaccharide or protein layer that aids in protection and adhesion to surfaces (NCERT, Chapter 8, page 130). Protein synthesis occurs in ribosomes, DNA replication in the nucleoid, and ATP production in mesosomes.

Question 2

Which component of the plasma membrane facilitates active transport?

Accepted Answer

Carrier proteins facilitate active transport by moving molecules against their concentration gradient using energy (NCERT, Chapter 8, page 128). Phospholipids form the bilayer, cholesterol maintains fluidity, and glycoproteins aid in cell recognition.

Question 3

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Accepted Answer

Protein synthesis occurs in the rough ER, not the smooth ER, which is involved in lipid metabolism and detoxification.

NEET Biology: Cell The Unit of Life — Practice Set 10

Q1. What is the role of the glycocalyx in prokaryotic cells?

Q2. Which component of the plasma membrane facilitates active transport?

Q3. Which of the following is NOT a function of the smooth endoplasmic reticulum?

Q4. Which type of transport across the plasma membrane occurs without energy input?

Q5. Which of the following statements about chromatin is correct?

Q6. Which part of the mitochondrion contains enzymes for the Krebs cycle?

Q7. Which structure in prokaryotic cells aids in respiration?

Q8. Which type of chromosomes have the centromere slightly away from the middle, resulting in one shorter arm and one longer arm?

Q9. Which of the following is correct about peroxisomes?

Q10. Which structure in animal cells facilitates adhesion between adjacent cells?