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UPSC NDA and NA Biology Quiz 4

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UPSC NDA and NA Biology Quiz 4

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Biology is a very important subject for Railway Recruitment exams and UPSC Exams. UPSC NDA and NA Prelims Exam is the combination of Mathematics and General Ability. Biology is one of the most important topics in the General Ability section. All these questions are easily understandable format. UPSC NDA and NA Biology Quiz 4 is very useful to get the maximum marks from the General Ability sections. Candidates can check the daily updates at UPSC Official Website

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Paper Mode Subject Marks Duration
Paper-I Mathematics 200 Marks 2 hours
Paper-II General Ability 200 Marks 2 hours
UPSC NDA and NA Syllabus

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1. What is the full form of DNA?
    A. Deoxyribo nucleic Acid B. Dioxyribo nucleic Acid C. Dinitrous nucleic Acid D. Diribooxy nucleic Acid

Answer: Option A
2. What does mutation of genes mean?
    A. Transmission of characters within generations with some changes B. Change in chromosomal structure C. Gradual change in gene which is not heritable D. Sudden change in gene which is inheritable

Answer: Option D
3. What is the chromosomal condition of a zygote developing into a male?
    A. Male chromosome X and female chromosome X B. Male chromosome Y and female chromosome X C. Male chromosome Y and female chromosome Y D. Male chromosome X and female chromosome Y

Answer: Option B
4. This genetic disorder occurs due to an additional chromosome added to 21st autosomal chromosome and result into mental retardness, eyes protruded an irregular physical structure. Which of the following is this?
    A. Patau’s syndrome B. Phenylketonuria C. Down’s syndrome D. Haemophilia

Answer: Option C
5. Which of the following is not an algae?
    A. Anabina B. Fucus C. Porphyra D. Ferns

Answer: Option D
6. Glucose is stored in which of the following forms in animals?
    A. Glycogen B. carbohydrate C. protein D. amino acid

Answer: Option A
7. Where is bile juice secreted in human body?
    A. Large Intestine B. Small intestine C. Gall bladder D. Liver

Answer: Option A
8. Which of the following is the smallest gland present in the body?
    A. Salivary gland B. Pituitary gland C. Thyroid gland D. None of the above

Answer: Option B
9. The high level of sugar in the blood is commonly known as
    A. Diabetes B. Rabies C. Thyroid D. Tuberculosis

Answer: Option A
10. Which of the following activities can be a cause of the spread of HIV virus?
    A. Hand shakes B. Hugs C. Saliva exchange D. Blood transfer

Answer: Option D
11. Which are the four most abundant elements in living cells?
    A. carbon, oxygen, nitrogen, sulfur B. carbon, oxygen, hydrogen, nitrogen C. carbon, oxygen, sulfur, phosphorus D. carbon, sulfur, hydrogen, magnesium

Answer: Option B
12. Which is an organic compound found in most cells?
    A. water B. glucose C. oxygen D. sodium chloride

Answer: Option B
13. Proteins are made from amino acids by the process of
    A. hydrolysis B. pinocytosis C. dehydration synthesis D. active transport

Answer: Option C
14. Sodium ions are “pumped” from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of
    A. diffusion B. passive transport C. osmosis D. active transport

Answer: Option D
15. Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the
    A. concentration of water molecules inside and outside the cell B. concentration of enzymes on either side of the cell membrane C. rate of molecular motion on either side of the cell membrane D. none of these

Answer: Option A

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