Biology Practice Exam Quiz MCQ!
(169).jpg "Biology Practice Exam Quiz MCQ!")
What do you know about biology? A practical application of biology is that most people are familiar with is hand washing. Regular washing of the hands with an excellent lathery soap eliminates the acquired microbes from the skin and helps to control the spread of communicable diseases. Another application of biology is the set of instructions to take all the pills of antibiotics as prescribed. This amazing biology quiz will be valuable to you.
- 1.Chromatids are
- A.
Dense patches within the nucleus
- B.
Bacterial chromosomes
- C.
Duplicate halves of a chromosome
- D.
Prokaryotic nuclei
- 2.
![Which is the correct sequence of the cell cycle? - ProProfs]( "Which is the correct sequence of the cell cycle?")
Which is the correct sequence of the cell cycle?- A.
C -> M -> G1 -> S -> G2
- B.
S -> G1 -> G2 -> M -> C
- C.
G1 -> S -> G2 -> M -> C
- D.
None
- 3.Chromosomes are only visible in what stage?
- A.
M phase (meiosis)
- B.
G1
- C.
G2
- D.
C phase
- E.
S phase (DNA synthesis)
- 4.Crossing-over occurs during:
- A.
Mitosis
- B.
Prophase I of meiosis
- C.
Metaphase I of meiosis
- D.
None
- 5.Crossing-over is also known as:
- A.
Synapsis
- B.
Chiasmata
- 6.Synapsis is:
- A.
Crossing-over
- B.
The lining up of chromosomes
- C.
Chromosomes lying close together
- 7.In what phase do tetrads form?
- A.
Anaphase I
- B.
Metaphase I
- C.
Prophase I
- D.
Metaphase II
- E.
Prophase II
- 8.The cell cycle is
- A.
Series of events that cells go through as they grow and divide
- B.
Period of time between the birth and death of a cell
- C.
Time from prophase until cytokinesis
- D.
Time is takes for a cell to undergo mitosis
- 9.What is the role of the spindle during mitosis?
- A.
It helps separate the chromosomes
- B.
It breaks down the nuclear membrane
- C.
It duplicates the DNA
- D.
It divides the cell in half
- 10.Unlike mitosis, meiosis results in the formation of:
- A.
2 genetically identical cells
- B.
4 genetically identical cells
- C.
2 genetically different cells
- D.
4 genetically different cells
- 11.Genetic drift tends to occur in populations that are:
- A.
Small
- B.
Large
- 12.During transcription:
- A.
Proteins are synthesized
- B.
DNA is replicated
- C.
RNA is produced
- D.
Translation occurs
- 13.What type of gene codes for a repressor protein?
- A.
Regulator
- B.
Promoter
- C.
Operon
- D.
Enhancer
- 14.Which enzyme's action is prevented by the presence of a repressor protein?
- A.
DNA polymerase
- B.
RNA polymerase
- C.
Lactase
- D.
Permease
- 15.The lac operon shuts off when:
- A.
Lactose is present
- B.
Lactose is absent
Questions: 9 | Attempts: 49796 | Last updated: Oct 6, 2020
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