1. Consider the following statements about B group Vitamins:
- Most of them are organic acids
- Most of them are water soluble
- Most of them are synthesized in the body
Which of the above statements is / are correct?
[A] Only 1 and 3
[B] Only 2
[C] Only 1 & 2
[D] 1, 2 & 3
Show Answer
Correct Answer: B [Only 2]
Notes:
B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. This is the correct statement as most of the B Vitamins are water-soluble. They are not primarily organic acids nor are they mostly synthesized in the body. They’re found in highest abundance in meat, and dietary supplements containing all eight are referred to as a vitamin B complex, which indicates that they’re more often ingested rather than synthesized.
2. Lipoproteins which are the large molecules and which transport the cholesterol in the bloodstream are ______-?
[A] protein molecules
[B] fat molecules
[C] protein and fat molecules
[D] Lipids
Show Answer
Correct Answer: C [protein and fat molecules]
Notes:
A lipoprotein is a biochemical assembly consisting of protein and fat molecules whose primary purpose is to transport hydrophobic lipid molecules in water, as in blood plasma or other extracellular fluids.
3. World’s first cloned Buffalo was born in which country?
[A] India
[B] China
[C] USA
[D] Russia
Show Answer
Correct Answer: A [India]
Notes:
The First cloned buffalo was born in February 2009 at National Dairy Research Institute, Karnal.
4. What fraction of Body’s calcium is stored in Bones and teeth?
[A] 85%
[B] 90%
[C] 94%
[D] 99%
Show Answer
Correct Answer: D [99%]
Notes:
99% of body’s calcium is stored in Bones and teeth. The remainder of the calcium is present in blood, extracellular fluid, muscle, and other tissues. It plays a role in mediating vascular contraction and vasodilation, muscle contraction, nerve transmission, and glandular secretion.
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 one of the following is responsible for maintenance of osmotic pressure in blood?
[A] Fibrinogen
[B] Red Blood Cells
[C] Albumin
[D] Platelets
Show Answer
Correct Answer: C [ Albumin]
Notes:Albumin is a protein found in the blood plasma, and it plays a crucial role in regulating osmotic pressure. It helps to maintain the balance of fluids between the blood vessels and the surrounding tissues. Albumin exerts an osmotic pressure that prevents the excessive loss of fluid from the blood vessels into the tissues.
Fibrinogen, Red Blood Cells, and Platelets have different functions in the blood, but they are not primarily responsible for maintaining osmotic pressure. Fibrinogen is involved in blood clotting, Red Blood Cells are responsible for carrying oxygen, and Platelets play a role in blood clotting as well.
7. What is study of fungus Known as?
[A] Mycology
[B] Phrenology
[C] Physiology
[D] Biology
Show Answer
Correct Answer: A [Mycology]
Notes:
Mycology is the branch of biology concerned with the study of fungi, including their genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as toxicity or infection.
8. By which of the following the genetic code can be translated through an intermediate, adaptor molecule? (UPSC Prelims 1985)
[A] tRNA
[B] mRNA
[C] ATP
[D] ADP
Show Answer
Correct Answer: B [mRNA]
Notes:
In the nucleus, the DNA code is transcribed or copied, into a messenger RNA (mRNA) molecule. In the cytoplasm, the mRNA code is translated into amino acids. Translation is orchestrated at the ribosome and it itself partly composed of RNA with transfer RNA playing the role of adaptor.
9. Which of the following is the major component of honey? (UPSC Prelims 1997)
[A] Glucose
[B] sucrose
[C] maltose
[D] fructose
Show Answer
Correct Answer: D [fructose]
Notes:
Fructose comprises the major portion of honey – about 82%. The carbohydrates present are the monosaccharides fructose (38.2%) and glucose (31%); and disaccharides (~9%) sucrose, maltose, isomaltose, maltulose, turanose and kojibiose.
10. Which of the following defines the process of Metastasis? (UPSC Prelims 2001)
[A] cells divide rapidly under the influence of drugs
[B] cancer cells spread through the blood or laymphatic system to other sites or organs
[C] the chromosomes in cell nuclei are attached to the spindle before moving to the anaphase poles
[D] cancer cells are successfully inhibited to divide any further
Show Answer
Correct Answer: B [cancer cells spread through the blood or laymphatic system to other sites or organs]
Notes:
Metastasis is a complex process that involves the spread of a tumor or cancer to distant parts of the body from its original site. The cancerous cells are sloughed from the tumours and reach distant sites through blood, and whenever they get lodged in the body, they start a new tumour there. This property called metastasis is the most feared property of malignant tumours.
