NEET Cell The Unit of Life — Set 12

Question 1

Which type of chromosome has its centromere located very close to one end, forming a very short and a very long arm?

Accepted Answer

Acrocentric chromosomes have the centromere positioned very close to one end, resulting in a very short and a very long arm.

Question 2

Which structure in eukaryotic cells is continuous with the outer nuclear membrane?

Accepted Answer

The rough endoplasmic reticulum is continuous with the outer membrane of the nuclear envelope, forming a network for protein synthesis (NCERT, Chapter 8, page 131). Golgi apparatus, mitochondria, and lysosomes are not continuous with the nuclear membrane.

Question 3

Which of the following statements about the cytoskeleton is incorrect?

Accepted Answer

The cytoskeleton is found in eukaryotic cells, not exclusively in prokaryotic cells, and it provides structural support and facilitates movement.

NEET Biology: Cell The Unit of Life — Practice Set 12

Q1. Which type of chromosome has its centromere located very close to one end, forming a very short and a very long arm?

Q2. Which structure in eukaryotic cells is continuous with the outer nuclear membrane?

Q3. Which of the following statements about the cytoskeleton is incorrect?

Q4. Which of the following is correct about the plasma membrane?

Q5. Which structure in eukaryotic cells stores non-living substances like glycogen?

Q6. Which of the following statements about vacuoles is incorrect?

Q7. Which of the following is correct about the cytoplasm?

Q8. Which bacterial structure stores reserve materials like glycogen and phosphate?

Q9. Which structure in a bacterial cell is responsible for genetic exchange?

Q10. Which organelle in animal cells helps form spindle fibers during cell division?