Class 9 Cell Flash cards Part 2

Do prokaryotic cells have membrane-bound organelles?

• Yes, they have membrane-bound organelles.

• No, prokaryotic cells lack both a nuclear membrane and membrane-bound organelles.

• Only some prokaryotic cells have membrane-bound organelles.

• Prokaryotic cells have a nuclear membrane but no other organelles.

Do prokaryotic cells have membrane-bound organelles?

• Yes, they have many membrane-bound organelles.

• No, they lack most cytoplasmic organelles.

• Only some prokaryotic cells have membrane-bound organelles.

• Prokaryotic cells have a few membrane-bound organelles.

What does the cytoplasm contain?

• It contains many specialised cell organelles, each with a specific function.

• It is primarily composed of water and salts.

• It serves as the site for protein synthesis only.

• It contains the cell's genetic material.

What are the two types of endoplasmic reticulum?

• Rough Endoplasmic Reticulum (RER), Smooth Endoplasmic Reticulum (SER)

• Nuclear Endoplasmic Reticulum (NER), Cytoplasmic Endoplasmic Reticulum (CER)

• Rough Endoplasmic Reticulum (RER), Golgi Apparatus (GA)

• Smooth Endoplasmic Reticulum (SER), Mitochondrial Endoplasmic Reticulum (MER)

What is chromatin material?

• A mass of entangled thread-like DNA in a non-dividing cell.

• A type of protein found in the cell membrane.

• A structure that helps in cell division.

• A liquid found in the cytoplasm of the cell.

Why does RER appear rough under a microscope?

• Because it has ribosomes attached to its surface.

• Because it is covered in a thick layer of protein.

• Because it contains a high concentration of lipids.

• Because it is involved in detoxifying the cell.

What are chromosomes?

• Rod-shaped structures that contain DNA; visible only when the cell is about to divide.

• Small particles that help in protein synthesis.

• Fluid-filled sacs within the cell that store nutrients.

• The outer membrane of the cell that controls what enters and exits.

What surrounds the nucleus in a eukaryotic cell?

• A double-layered nuclear membrane.

• A single-layered nuclear membrane.

• Cytoplasm surrounding the nucleus.

• Cell wall surrounding the nucleus.

Why do complex cells need many chemical activities?

• To support their complex structure and function.

• To reduce energy consumption.

• To simplify their cellular processes.

• To increase their size and volume.

Do viruses have membranes?

• Yes, viruses have membranes that protect their genetic material.

• No, viruses lack membranes and do not show life characteristics outside a host.

• Some viruses have membranes, while others do not.

• Viruses have membranes similar to those of living cells.