1. The shape of Vibrio bacteria is ________?
[A] Comma Shaped
[B] Dot shaped
[C] Clusters
[D] Sticks
Show Answer
Correct Answer: A [Comma Shaped]
Notes:
The shape of Vibrio bacteria is comma shaped. These bacteria naturally live in certain coastal waters and are present in higher concentrations between the months of May and October when water temperatures are warmer.
2. The enzyme Nitrite reductase has which of the elements as its constituent ?
[A] Molybdenum
[B] Copper
[C] Iron
[D] Zinc
Show Answer
Correct Answer: A [Molybdenum]
Notes:
Nitrite reductase refers to any of several classes of enzymes that catalyze the reduction of nitrite. They are enzymes that catalyze reduction of nitrate to nitrite using a molybdenum cofactor.
3. Which among the following virus is also called as “Hit & Hide” Virus?
[A] RSV Virus (respiratory syncytial virus )
[B] Dengue virus
[C] Influenza virus
[D] HIV virus
Show Answer
Correct Answer: A [RSV Virus (respiratory syncytial virus )]
Notes:
RSV Virus (respiratory syncytial virus) is also called as “Hit & Hide” virus. It causes infections of the lungs and respiratory tract. It is a major cause of lower respiratory tract infections.
4. Which among the following conditions will give birth to Fraternal Twins?
[A] a single egg is fertilized to form one zygote which then divides into two separate embryos
[B] sperm cells fertilize both the ovum and the second polar body
[C] two eggs are independently fertilized by two different sperm cells
[D] none of the above
Show Answer
Correct Answer: C [two eggs are independently fertilized by two different sperm cells]
Notes:
Fraternal twins are also called as dizygotic twins. In this type of pregnancy two eggs are independently fertilized by two different sperm cells. These types of twins may be of the same or different sexes.
5. Which among the following disease has the minimum incubation period, comparing to other ones?
[A] Small Pox
[B] Influenza
[C] Measles
[D] Mumps
Show Answer
Correct Answer: B [Influenza]
Notes:
Influenza (1-2 days) , rest are 6-15 days
6. Which among the following have been found to produce a protein called Defensin-1, which has been found potential to develop drugs for antibiotic resistant bacteria?
[A] Codfish
[B] Cuttle Fish
[C] Honey bee
[D] Domestic Fly
Show Answer
Correct Answer: C [Honey bee]
Notes:
Defensin-1 is the name of a protein, which has the property of resistance of epithelial surfaces to microbial colonization. This protein has the potential to develop drugs for antibiotic resistant bacteria. Honey bees make this protein and adds to honey and the scientists at the Academic Medical Centre, Amsterdam say that one day the drugs developed by Honey containing Defensin-1 , could combat antibiotic-resistant infections.
7. Which of the following branches of Biology is concerned with the effects of radiation on living organisms?
[A] Actinobiolgy
[B] Cryobiology
[C] Cytogenetics
[D] Aerobiology
Show Answer
Correct Answer: A [Actinobiolgy]
Notes:
Actinobiolgy is the branch of biology which studies the effects of radiation on organisms. Cryobiology involves study of life at Low temperatures; Cytogenetics involves Cytological basis of inheritance and Aerobiology deals with the studies of spores and micro organisms in air.
8. What is Chloramphenicol?
[A] It is an antibiotic
[B] It is an antiseptic
[C] It is an antacid
[D] It is an analgesic
Show Answer
Correct Answer: A [ It is an antibiotic]
Notes:
Chloramphenicol is a broad spectrum antibiotic. It can be given orally in case of typhoid, dysentery, acute fever, certain form of urinary infections, meningitis and pneumonia.
9. Which plants grow under water stress conditions of deserts?
[A] Epiphytes
[B] Xerophytes
[C] Sciophytes
[D] Heliophytes
Show Answer
Correct Answer: B [Xerophytes]
Notes:
A Xerophyte is a species of plant that has adapted to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic.
10. Niacin is the chemical name of which vitamin?
[A] Vitamin B1
[B] Vitamin B3
[C] Vitamin B2
[D] Vitamin C
Show Answer
Correct Answer: B [Vitamin B3]
Notes:
The chemical name of Vitamin B3 is Niacin which is a water soluble vitamin. It is an important nutrient. In fact, every part of your body needs it to function properly. As a supplement, niacin may help lower cholesterol, ease arthritis and boost brain function, among other benefits.
