Below are the Biology MCQs For MDCAT Prep Test 2024:
Cell Cycle Biology MCQs:
1➤ In which stage of the cell cycle each chromosome is duplicated and so it consists of two chromatids?
ⓑ S
ⓒ M
ⓓ G2
2➤ During which phase of mitosis spindles are formed?
ⓑ Interphase
ⓒ Prophase
ⓓ Metaphase
3➤ In which stage of the cell cycle, the cell is preparing enzyme for chromosome replication?
ⓑ G2
ⓒ S
ⓓ M
4➤ Which of the following stage of cell division is very different for animal and plant cells?
ⓑ Metaphase
ⓒ Anaphase
ⓓ Cytokinesis
5➤ Prior to cell division, each chromosome replicates or duplicates its genetic material, the products are connected by a centromere and are called;
ⓑ Homologous chromosomes
ⓒ Non-sister chromatids
ⓓ Sister chromatids
6➤ The process of mitosis ensures that:
ⓑ Each new cell receives the proper number of chromosomes
ⓒ Cells will divide at the appropriate time
ⓓ Chromosomes duplicate without errors
7➤ Cytokinesis in characterized by; a plant cell is
ⓑ A pinching off of the cell membrane to divide the cell
ⓒ The formation of a cell plate in the cytoplasm
ⓓ The movement of the chromosomes from the metaphase plate
8➤ Which of the following is unique to mitosis and not a part of meiosis-I?
ⓑ Homologous chromosomes cross over
ⓒ Chromosome pairs are broken during anaphase
ⓓ Chromatids separate during anaphase
9➤ Which event distinguishes meiosis from mitosis?
ⓑ Loss of the nuclear membrane
ⓒ Formation of metaphase plate
ⓓ Pairing of homologous chromosomes
10➤ In which stage of the cell cycle most cells spend their lives?
ⓑ Metaphase
ⓒ Telophase
ⓓ anaphase
11➤ Which of the following distinguishes meiosis from mitosis?
ⓑ Chromosomes undergo crossing over.
ⓒ Daughter cells are genetically different from the parent cell
ⓓ All of the above
12➤ For mitosis, the chromosomes of the cells duplicated during interphase. When do the chromosomes duplicate for meiosis?
ⓑ Before meiosis II
ⓒ During Meiosis-I
ⓓ Do not duplicate
13➤ Find the correct statement.
ⓑ Chromosomes do not duplicate in the interphase preceding meiosis-1.
ⓒ Homologous chromosomes form pairs during meiosis but not mitosis.
ⓓ Spindles are not required during meiosis.
14➤ What reason would you suggest for the fact that the total DNA content of each daughter cell is reduced during meiosis?
ⓑ Chromosomes do not between meiosis I and II. duplicate
ⓒ Half of the chromosomes from each gamete are broken.
ⓓ Sister chromatids separate during anaphase of meiosis I.
15➤ If you observe a cell like this one, what phase of mitosis is it?
ⓑ Telophase
ⓒ Metaphase
ⓓ Prophase
16➤ What is called accidental death of cells and tissues?
ⓑ Necrosis
ⓒ Cell generation
ⓓ Fragmentation
17➤ Programed cell death is called:
ⓑ Necrosis
ⓒ Osmosis
ⓓ Fragmentation
18➤ Which protein is used in the formation of spindle fibers during mitosis?
ⓑ Tubulin
ⓒ Globulin
ⓓ Adrenaline
19➤ Phase of mitosis are:
ⓑ Two
ⓒ Three
ⓓ Four
20➤ When tumors remain in their original location they are called:
ⓑ Malignant tumors
ⓒ Metastasis
ⓓ None of these
21➤ Tumors are produced as a result of errors in:
ⓑ Mitosis
ⓒ Binary fission
ⓓ Multiple fission
22➤ In which organism Thomas Hunt Morgan observed the phenomenon of crossing over?
ⓑ Mosquito
ⓒ Fruit fly
ⓓ Sparrow
23➤ Chaismata is formed during:
ⓑ Prophase-II
ⓒ Anaphase-I
ⓓ Anaphase-II
24➤ The longest phase of Meiosis is:
ⓑ Anaphase-I
ⓒ Telophase-I
ⓓ Prophase-I
25➤ Those cells which give rise to gametes are:
ⓑ Spindle fibre
ⓒ Germ line cell
ⓓ Synapsis
26➤ Tumors which remain at their production site are called:
ⓑ Malignant
ⓒ Metastasis
ⓓ All of these
27➤ Which animal shows regeneration?
ⓑ Paramecium
ⓒ Sea-star
ⓓ Hydra
28➤ During mitosis one cell divides into:
ⓑ 3
ⓒ 4
ⓓ 5
29➤ At which stage of cell cyde cell stop dividing?
ⓑ G1
ⓒ G2
ⓓ G3
30➤ The interphase is divided into how many phases?
ⓑ Three
ⓒ Two
ⓓ One
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