Which of the following statements correctly compares vacuoles in plant and animal cells?
Plant cells have large vacuoles, animal cells have small ones
In mature plant cells, a large central vacuole can occupy up to 90% of the cell volume. It stores water, ions, sugars, pigments, and waste products, and its pressure (turgor) keeps the plant cell rigid.
Animal cells do not have a permanent large vacuole. They may have small, temporary vacuoles (food vacuoles in phagocytosis, contractile vacuoles in some protists), but these are much smaller and transient compared with the plant central vacuole.
The correct answer is : Plant cells have large vacuoles, animal cells have small ones.
What conclusion can be drawn from the microscopic observation of onion peel cells?
The smooth endoplasmic reticulum (SER) helps in the manufacture of ___________.
Which of the following cell organelles have cisterns and is involved in the formation of lysosomes?
Cells differ in shape and size according to the work they perform in living organisms. Which of the following correctly compares a cell’s shape with its function?
What distinguishes rough ER (RER) from smooth ER (SER)?
Which of the following is an epithelial tissue?
I. Squamous
II. Ciliated
Cells of ______ and ______ tissues are living cells.
The process of converting ammonia into nitrates is called:
What is the function of the nucleus?
Which of the following is not true about prokaryotic cells?