To study the internal ultracellular structure, biologists use which one of the following?

D. Transmission electron microscope

C. Scanning electron microscope

D. Transmission electron microscope

Everyday Science · Cell Biology & Microorganisms · page 13 of 46

Cell Structure & Organelles MCQs with Answers

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Cell Structure & Organelles MCQs (121–130)

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121.
If there are 20 centromeres in a cell at anaphase, how many chromosomes are there in each daughter cell following cytokinesis?
Correct Answer: B. 20
One-liner
Each daughter cell will have 20 chromosomes, because at anaphase each centromere corresponds to one chromosome, and after cytokinesis each daughter cell receives the full set of 20 chromosomes.
122.
What is the voltage across a membrane called?
Correct Answer: C. Membrane potential
One-liner
The voltage difference across a cell membrane is called the membrane potential.
123.
Which of the following is absent in prokaryotic cells?
Correct Answer: C. Chloroplast
One-liner
Prokaryotic cells lack membrane-bound organelles, and chloroplast is a membrane-bound organelle absent in them.
124.
Cyclosis and amoeboid movements are because of _?
Correct Answer: B. Microfilaments
One-liner
Cyclosis and amoeboid movements occur due to microfilaments, which are actin protein filaments of the cytoskeleton.
125.
Programmed cell death is known as _?
Correct Answer: A. Apoptosis
One-liner
Programmed cell death is known as Apoptosis.
126.
Hen's egg is a ?
Correct Answer: C. Cell
One-liner
A hen's egg is a single cell (the ovum), making it one of the largest cells in the animal kingdom.
127.
Who gave the phrase 'Omnis cellula e cellula'?
Correct Answer: C. Rudolf Virchow
One-liner
The phrase 'Omnis cellula e cellula' (every cell arises from a pre-existing cell) was given by Rudolf Virchow.
128.
To study the internal ultracellular structure, biologists use which one of the following?
Correct Answer: D. Transmission electron microscope
One-liner
Biologists use the transmission electron microscope (TEM) to study the internal ultracellular structure of cells.
129.
Which additional structure do plant cells have that animal cells do not?
Correct Answer: A. Cell wall
One-liner
Plant cells have a cell wall, which is an additional rigid outer layer absent in animal cells.
130.
Sequence of changes which occurs between one cell division and the next is called?
Correct Answer: C. Cell cycle
One-liner
The sequence of changes occurring between one cell division and the next is called the cell cycle.

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Cell Structure & Organelles MCQs with Answers

Cell Structure & Organelles MCQs (121–130)

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