1. Which part of the cell is responsible for regulating the entry and exit of substances?
Answer:
Explanation:
The cell membrane is semi-permeable and regulates the transport of substances in and out of the cell.
2. Which cell organelle is known as the "powerhouse" of the cell?
Answer:
Explanation:
Mitochondria generate ATP, which provides energy for cellular functions.
3. Which of the following cells lack a defined nucleus?
Answer:
Explanation:
Prokaryotic cells have a nucleoid region instead of a well-defined nucleus.
4. The fluid content inside the cell membrane is called:
Answer:
Explanation:
Cytoplasm encompasses the fluid and all organelles outside the nucleus.
5. Ribosomes are the sites for:
Answer:
Explanation:
Ribosomes are responsible for assembling amino acids into proteins.
6. Which cell organelle is involved in the synthesis of lipids?
Answer:
Explanation:
SER helps in the synthesis of lipids and detoxification.
7. The genetic material of a cell is contained in:
Answer:
Explanation:
The nucleus houses the DNA, which contains genetic information.
8. Which cell organelle is responsible for packaging and transporting substances?
Answer:
Explanation:
Golgi apparatus modifies and packages proteins and lipids into vesicles for transport.
9. The term "cell" was first coined by:
Answer:
Explanation:
Robert Hooke observed cells in a piece of cork and introduced the term "cell."
10. Chloroplasts are found in:
Answer:
Explanation:
Chloroplasts are the site of photosynthesis in plant cells.
11. The structural and functional unit of life is:
Answer:
Explanation:
The cell is the smallest unit that can perform all the functions necessary for life.
12. Which cell organelle contains hydrolytic enzymes?
Answer:
Explanation:
Lysosomes contain enzymes that help in digestion and waste removal.
13. The network of membranes involved in the synthesis of proteins is:
Answer:
Explanation:
RER has ribosomes on its surface, aiding in protein synthesis.
14. Which part of the cell provides rigidity to the plant cell?
Answer:
Explanation:
The cell wall is a rigid layer that provides structural support to plant cells.
15. In which part of the cell does translation occur?
Answer:
Explanation:
Translation is the process of protein synthesis, which occurs in ribosomes.
16. Plasmolysis in plant cells is caused due to:
Answer:
Explanation:
Plasmolysis occurs when plant cells lose water and shrink in a hypertonic solution.
17. Which organelle is responsible for autophagy and self-destruction of the cell?
Answer:
Explanation:
Lysosomes can cause autolysis, leading to cell death.
18. Centrosomes are associated with:
Answer:
Explanation:
Centrosomes play a key role in organizing microtubules during cell division.
19. Cristae are found in:
Answer:
Explanation:
Cristae are the inner foldings of the mitochondrial membrane.
20. The organelle that modifies and sorts proteins and lipids is:
Answer:
Explanation:
Golgi apparatus receives proteins and lipids from the endoplasmic reticulum and modifies, sorts, and ships them.