Cell Structure and Function Concepts

This video tutorial covers Class 8 Science Chapter 8 on cell structure and functions. It includes explanations of exercise questions, true/false statements, and detailed discussions on nerve cells, cytoplasm, nucleus, and the differences between animal and plant cells. The video also explores the distinctions between eukaryotes and prokaryotes, the role of chromosomes, and the presence of chloroplasts in plant cells. A crossword puzzle is provided to reinforce learning.

Which of the following statements is true about unicellular organisms?

• They have branched muscles.

• They have a well-organized nucleus.

• They have one cell body.

• They have multiple cells.

What is the primary function of nerve cells?

• To produce hormones

• To receive and transfer messages

• To provide structural support

• To store energy

What is the jelly-like substance present between the cell membrane and the nucleus called?

• Chromosome

• Cytoplasm

• Nucleus

• Ribosome

Which part of the cell contains organelles such as mitochondria and ribosomes?

• Cytoplasm

• Cell wall

• Chloroplast

• Nucleus

Which of the following is NOT a difference between plant and animal cells?

• Presence of cell wall

• Location of nucleus

• Size of vacuole

• Presence of mitochondria

In plant cells, where is the nucleus typically located?

• At the side

• Near the vacuole

• Near the cell membrane

• At the center

What is a key difference between eukaryotic and prokaryotic cells?

• Prokaryotic cells have multiple chromosomes.

• Eukaryotic cells have a nuclear membrane.

• Prokaryotic cells have a well-organized nucleus.

• Eukaryotic cells lack a nucleus.

Where are chromosomes found within a cell?

• In the vacuole

• In the cell membrane

• In the nucleus

• In the cytoplasm

Why are chloroplasts found only in plant cells?

• They provide structural support.

• They store genetic information.

• They are required for photosynthesis.

• They are involved in cell division.

What is the role of genes found on chromosomes?

• To transport nutrients

• To control cell division

• To carry genetic information

• To produce energy