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Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

All Topics  1525

Destruction of all life forms is called___________?
A Sterilization
B Disinfection
C Antisepsis
D Preservation
Correct Answer: Sterilization
Reverse transcriptase is present in____________?
A All RNA viruses
B All DNA viruses
C All retroviruses
D All viruses
Correct Answer: All retroviruses
It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:
A Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
B Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
C Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
D Older sediment layers did not have these radioactive isotopes
Correct Answer: Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
Bacteria which grow either in the presence or absence of oxygen___________?
A Aerobic bacteria
B Anaerobic bacteria
C Facultative bacteria
D Microaerophilic
Correct Answer: Facultative bacteria
___________ is used to relieve one kind of headache, migraine?
A Pencillin
B Lovastatin
C Cyclosporine
D Ergotin
Correct Answer: Ergotin
Cytoskeleton involved in assembly and disassembly of the spindle during mitosis is of_________?
A Microtubules
B Microfilaments
C Intermediate filaments
D None of these
Correct Answer: Microtubules
Sythetic insulin from pork was formed by which technique__________?
A Parasitology
B Social biological techniques
C Biotechnology
D Both a and c
Correct Answer: Biotechnology
___________ is concerned with cell secretions?
A Endoplasmic reticulum
B Golgi complex
C Lysosomes
D Cell membrane
Correct Answer: Golgi complex
Which one is not correct for a productive theory________?
A It is predictive
B It has explanatory power
C It discourages suggestion of different hypotheses
D None of these
Correct Answer: It discourages suggestion of different hypotheses
Intake of liquid material by cell membrane is called___________?
A Endocytosis
B Exocytosis
C Phagocytosis
D Pinocytosis
Correct Answer: Pinocytosis
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