1. Opium is obtained from the dry latex from which part of the Papaver somniferum Plant?
[A] Stem
[B] Leaves
[C] Poppy
[D] Stem joints
Show Answer
Correct Answer: C [Poppy]
Notes:
Opium is dried latex which is obtained from the seed capsules of the opium poppy Papaver somniferum.
2. A genetic code specifies how many kinds of amino acids?
[A] 12
[B] 15
[C] 20
[D] 25
Show Answer
Correct Answer: C [20]
Notes:
There are as many as 100 thousand kinds of proteins that constitute the body, and these comprise only 20 kinds of amino acids in various combinations.
3. Which among the following are the building blocks of human body ?
[A] Muscles
[B] Cells
[C] Neurons
[D] Proteins
Show Answer
Correct Answer: B [Cells]
Notes:
The building blocks of the human body are cells. Cells are the smallest unit of life and they perform all the functions necessary for the body to function. There are many different types of cells in the body, including muscle cells, nerve cells, and blood cells. These cells are organized into tissues, which are groups of similar cells that work together to perform a specific function. Tissues are then organized into organs, which are structures made up of multiple tissues that work together to perform a specific function, such as the heart or the liver. Organs are then organized into systems, which are groups of organs that work together to perform a specific function, such as the respiratory system or the circulatory system. Together, these building blocks allow the body to function as a whole.
4. Which among the following is not rightly matched : (Ailments and affected parts of Body)
[A] Dermatitis – Skin
[B] Glossitis – Tongue
[C] Peritonitis – Abdomen
[D] Cystitis – Caecum
Show Answer
Correct Answer: D [Cystitis – Caecum]
Notes:
Cystitis is related to Bladder
5. It has been demonstrated by the scientists that, certain wines such as Red Wine posses health benefits because they contain antioxidants, which work in the body as Free Radical Scavengers and slow the oxidation of other molecules by capturing the free radicals. Which among the following is the most common antioxidant found in Red Wine?
[A] Catechin
[B] Tetrodotoxin
[C] Polyphenol
[D] Tocopherol
Show Answer
Correct Answer: C [Polyphenol]
Notes:
The most common antioxidant found in Red Wine is Polyphenol. It has been demonstrated by the scientists that, certain wines such as Red Wine posses health benefits because they contain antioxidants, which work in the body as Free Radical Scavengers and slow the oxidation of other molecules by capturing the free radicals.
6. Consider the following statements:
- Color blindness is more common in men.
- Color blindness is an X-linked recessive trait.
- If both the X chromosomes are defective, a woman may have color blindness.
Which of the above statements are correct?
[A] Only 1
[B] 1, 2 and 3
[C] 2 and 3
[D] Only 1 and 2
Show Answer
Correct Answer: B [1, 2 and 3]
Notes:
Color blindness is more prevalent in men as it is an X-linked recessive disorder. Men, having only one X chromosome, are more susceptible if it is defective. Women, with two X chromosomes, become color blind only if both carry the defective gene. All three statements accurately describe the inheritance and prevalence of color blindness.
7. Which among the following is correct definition of Bacteriophage?
[A] A Bacteria that destroys Virus
[B] A Virus that destroys Bacteria
[C] A Bacteria that destroys another bacteria
[D] A Bacteria that destroys Fungi
Show Answer
Correct Answer: B [A Virus that destroys Bacteria]
Notes:
Bacteriophage a virus that parasitizes a bacterium by infecting it and reproducing inside it. Bacteriophages are commonly used in genetic research. They are composed of proteins that encapsulate a DNA or RNA genome, and may have structures that are either simple or elaborate.
8. In which of the following kidney shaped guard cells are present?
[A] Dicot plants
[B] Monocot plants
[C] Grasses
[D] Algae
Show Answer
Correct Answer: A [Dicot plants]
Notes:
Kidney-shaped guard cells are found in dicotyledons. A dicotyledon is a flowering plant with an embroy that bears two cotyledons (seed leaves).
9. Which of the following can be checked by doctors with the help of Pulse reading? (UPSC Prelims 1979).
[A] Temperature
[B] Heart beat
[C] Blood pressure
[D] Respiration rate
Show Answer
Correct Answer: B [Heart beat]
Notes:
Pulse rate is the number of heart beats per minute. The resting pulse rate for an average adult is between 60 and 80 beats per minute. It can go up to 130–150 beats per minute when you’re exercising because the body needs more oxygen. The study of the pulse is known as sphygmology.
10. The varieties of corn can be improved by which of the following methods?
[A] Dihybrid crosses
[B] Back cross
[C] Double cross
[D] Natural selection
Show Answer
Correct Answer: C [Double cross]
Notes:
Double-cross hybrid is the type of hybrid that is produced when two different single-cross hybrids are cross-pollinated.
