Free Biotechnology MCQs with Answers

• A. Type 1 diabetes
• B. Type 2 diabetes
• C. Both A. & B
• D. None of these

Explanation: Most diabetic cats develop a type 2-like diabetes associated with insulin resistance and reduced insulin secretion, often linked with…

• A. Type 1 diabetes
• B. Type 2 diabetes
• C. Both a& b
• D. None of these

Explanation: Canine diabetes most commonly resembles type 1 diabetes, with destruction or loss of pancreatic beta-cell function causing marked insulin…

• A. Tissue culture
• B. Mutation
• C. Antibiosis
• D. Recombination

Explanation: Tissue culture produces new plants from small pieces of tissue or cells under sterile conditions, without using seeds.

• A. Bidding of Dermatology
• B. Binding of Dirt
• C. Biochemical occupied Date
• D. Biochemical Oxygen demand

Explanation: BOD means biochemical oxygen demand, the amount of dissolved oxygen microorganisms require to decompose organic matter in water.

• A. Plasmodium vivax
• B. Plasmodium falciparum
• C. Plasmodium ovale
• D. Plasmodium malariae

Explanation: Plasmodium vivax causes benign or mild tertian malaria, with fever commonly recurring every 48 hours because the parasite synchronously…

• A. Musturd
• B. Paddy
• C. Ground nut
• D. None of these

Explanation: Tikka disease is a fungal disease of groundnut, also called peanut leaf spot, caused mainly by Cercospora species.

• A. B1
• B. B2
• C. B12
• D. B6

Explanation: Intestinal bacteria can synthesize several B-group vitamins, including vitamin B12, which is also important for red blood cell formation…

• A. ring worm
• B. meningitis
• C. hepatitis
• D. none of these

Explanation: Meningitis is inflammation of the meninges surrounding the brain and spinal cord, and although bacteria and viruses are common causes…

• A. Robert Hook
• B. James parkinson
• C. Dr Barry Marshall and dr Robin Warren
• D. None of these

Explanation: Barry Marshall and Robin Warren discovered the association between Helicobacter pylori and peptic ulcer disease, showing that many ulcers…

• A. Antiseptics
• B. Disinfectants
• C. Antibiotics
• D. Vaccines

Explanation: Antiseptics are chemicals applied to living tissues, such as skin, to inhibit or kill microorganisms.

• A. Louis Pasteur
• B. Edward Jennar
• C. Leuvenhoek
• D. Alexander Fleming

Explanation: Louis Pasteur developed an attenuated vaccine against anthrax and demonstrated its protective effect in livestock.

• A. 3
• B. 5
• C. 4
• D. 6Standardized & Admissions Tests

Explanation: Koch's germ theory is expressed through four postulates linking a specific microorganism with a specific disease: presence in diseased…

• A. A specific organism can always be found in association with a given disease
• B. The organism can be isolated and grown in pure culture in the laboratories
• C. The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.
• D. It is possible to recover the organism in pure culture from the experimentally infected animals

Explanation: Koch's third postulate requires that the isolated organism, when introduced into a healthy susceptible host, reproduce the same disease.

• A. Robert Koch
• B. Louis Pasteur
• C. Alexander Fleming
• D. Leeuwenhoek

Explanation: Antonie van Leeuwenhoek first observed microorganisms with his improved microscopes and called them animalcules, meaning tiny animals.

• A. True bacteria
• B. False bacteria
• C. Recent bacteria
• D. Ancient bacteria

Explanation: The prefix archae- comes from the Greek word meaning ancient or primitive, so Archaebacteria means ancient bacteria.

• A. Rhodophyta
• B. Chlorophyta
• C. Phaeophyta
• D. Chrysophyta

Explanation: Chlorophyta, or green algae, contain chlorophyll a and b, store food mainly as starch, and commonly have cellulose-rich cell walls…

• A. Their zygote unlike plants is protected by parental tissue
• B. Their classification is based on pigment composition
• C. Most of them have different morphological forms in-different stages of their life cycle
• D. Almost all of them are aquatic

Explanation: Algal zygotes generally develop outside the parental body and are not protected by parental tissues as plant embryos are, making statement…

• A. Kelps
• B. Gymnosperms
• C. Angiosperms
• D. Algae

Explanation: Algae, especially marine and freshwater phytoplankton, carry out a very large share of Earth's photosynthesis because they are abundant…

• A. Radiolarians
• B. Forams
• C. Both of these
• D. None of these

Explanation: Radiolarians have delicate, glass-like skeletons made mainly of silica, giving them a transparent or glassy appearance.

• A. Chrysophyta
• B. Phaeophyta
• C. Pyrrophyta
• D. Rhodophyta

Explanation: Rhodophyta are the only major algal group in which flagellated motile cells are absent throughout the life cycle.