1. When the body’s immune system cells destroy the insulin producing beta cells of the pancreas is termed as ________?
[A] Type 1 diabetes
[B] Type 2 diabetes
[C] hybrid diabetes
[D] none of the above
Show Answer
Correct Answer: A [Type 1 diabetes]
Notes:
When the body’s immune system cells destroy the insulin producing beta cells of the pancreas is termed as Type 1 diabetes. Symptoms may include increased thirst, frequent urination, hunger, fatigue and blurred vision.
2. Hepatitis A which is the most common cause of jaundice in young people is an infection of liver by ________?
[A] Bacteria
[B] Virus
[C] Amoeba
[D] Prortozoan
Show Answer
Correct Answer: B [Virus]
Notes:
Hepatitis A which is the most common cause of jaundice in young people is an infection of liver by virus. It is transmitted through ingestion of contaminated food and water or through direct contact with an infectious person.
3. The “Red Tides” which are found in marine coastal areas such as “Florida red tide” that occurs in the Gulf of Mexico, is considered to be responsible for bioaccumulation and making local filter feeding organisms such as mussels and oysters toxic. Due to which of the following the “Red Tides” Occur?
[A] Bacteria
[B] Algae
[C] Fungi
[D] Toxic Wastes of the Industries
Show Answer
Correct Answer: B [Algae]
Notes:
Red tide is a common name for algal blooms. It is the large concentrations of aquatic microorganisms, such as protozoans and unicellular algae (e.g. dinoflagellates and diatoms). The upwelling of nutrients from the sea floor following massive storms, provides for the algae and triggers bloom events.
4. For which of the following diseases first successful vaccination was devloped (it is caused by Variola virus)?
[A] Cow pox
[B] Chicken pox
[C] Small pox
[D] Polio
Show Answer
Correct Answer: C [Small pox]
Notes:
Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. the World Health Organization (WHO) certified the global eradication of the disease in 1980.
5. Ornithophily refers to the pollination through which among the following?
[A] Wind
[B] Insects
[C] Birds
[D] Water
Show Answer
Correct Answer: C [Birds]
Notes:
Ornithophily refers to the pollination through birds. Birds which are involved in ornithophily are specialist nectarivores with brushy tongues and long bills, that are either capable of hovering flight or light enough to perch on the flower structures.
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 among the following is most distantly related to other three animals?
[A] Walrus
[B] Sea Lion
[C] Seals
[D] Sperm whale
Show Answer
Correct Answer: D [ Sperm whale]
Notes:
Seals, Walruses and Sea lions are Mammals belonging to a single taxonomic group ( a clade) called Pinnipedia, which means fin footed. All of them are semi-aquatic marine mammals. They belong to the order Carnivora and their closest living relatives are bears. They are characterized by modification of limbs to flippers. Pinnipeds are mammals with four flippers — one pair in front and one at the back. They are warm-blooded, nurse their young, breathe air and have hair. The sea lion has small, tiny external ear flaps. Seals have no flaps. The front flippers of sea lions are long, have no hair and nails. Seals’ front flippers are short, blunt, covered with hair with nails on the ends. Sea lions can turn their hind flippers forward to move on land but seals cannot do so.
8. Which of the following is the lowest taxonomic division shared by both man and frog?
[A] Order
[B] Class
[C] Phylum
[D] Family
Show Answer
Correct Answer: C [Phylum]
Notes:
In the kingdom of animals, the phylum Chordata includes the classes of Pisces, Amphibia, Reptilia, Aves and Mammalia. These classes have at some stage in their lives shown common characteristics. So, man and frog belong to the same Phylum in the taxonomical level.
9. Guttation takes place due to the development of which of the following?
[A] Cells
[B] Transpiration
[C] Root pressure
[D] All of the above
Show Answer
Correct Answer: C [Root pressure]
Notes:
Guttation takes place due to the development of root pressure. Guttation is the exudation of drops of xylem sap on the tips or edges of leaves of some vascular plants, such as grasses and a number of fungi.
10. Haemoglobin is an important component of which of the following?
[A] Red blood cells
[B] White blood cells
[C] Plasma
[D] All options are correct
Show Answer
Correct Answer: A [Red blood cells]
Notes:
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates as well as the tissues of some invertebrates. Haemoglobin in the blood carries oxygen from the lungs or gills to the rest of the body.
