31. Cirrhosis is a liver disease described by the abnormal structure and functioning of the liver. This is mainly diagnosed by __.
[A] Blood Test
[B] Liver biopsy
[C] Physical examination
[D] All of the above
Show Answer
Correct Answer: B [Liver biopsy]
Notes:
Cirrhosis is a liver disease characterized by abnormal structure and function of the liver and diagnosed by Liver biopsy.
32. Which of the following is not a female hormone?
[A] Oxytocin
[B] Testosterone
[C] Estrogen
[D] Progesterone
Show Answer
Correct Answer: B [Testosterone]
Notes:
The testes produce testosterone which is responsible for male sexual characteristics.
33. Where does the fertilization of the egg take place with the sperm?
[A] Ovaries
[B] Fallopian tubes
[C] Uterus
[D] Vagina
Show Answer
Correct Answer: B [Fallopian tubes]
Notes:
The fertilization of the egg with the sperm occurs in the fallopian tube.
34. The smallest unit of genetic material that produces a phenotypic effect on mutation is called?
[A] Muton
[B] Gene
[C] Recon
[D] Nucleic acid
Show Answer
Correct Answer: A [Muton]
Notes:
The smallest unit of genetic material that produces a phenotypic effect on mutation is called Muton.
35. Where is compound manure made?
[A] Rotted vegetable and animal refuse
[B] Farmyard manure and green manure
[C] Farm refuse and household refuse
[D] Organic wastes from which biogas has been extracted
Show Answer
Correct Answer: A [Rotted vegetable and animal refuse]
Notes:
Compound manure is made of Rotted vegetables and animal refuse. A fertilizer that contains two or more nutrients and is also known as a multi-nutrient fertilizer is called Compound manure.
36. What is Bed Method in Vermicomposting?
[A] beds of chemicals matter are prepared
[B] beds of organic matter are prepared
[C] beds of phosphorus are prepared
[D] All of the above
Show Answer
Correct Answer: B [beds of organic matter are prepared]
Notes:
In Vermicomposting, the Bed Method in which beds of organic matter are prepared.
37. Which chemical is used to obtain a precipitate of pure DNA?
[A] Methanol
[B] Ether
[C] HCl
[D] Ethanol
Show Answer
Correct Answer: D [Ethanol]
Notes:
Ethanol is used to obtain a precipitate of pure DNA. Renewable fuel made from corn and other plant materials is called ethanol.
38. A cross between homozygous recessive and heterozygous plant is
____:
[A] Back cross
[B] Test cross
[C] Monohybrid cross
[D] Dihybrid cross
Show Answer
Correct Answer: B [Test cross]
Notes:
A cross between a homozygous plant with recessive traits and a heterozygous plant is known as a test cross. A test cross is a valuable tool in predicting the genotype of the organism in question. In its simplest form, a test cross is an experimental cross of an individual organism of dominant phenotype but unknown genotype and an organism with a homozygous recessive genotype (and phenotype). Test cross is done to determine the genotype of an F2 generation plant, showing dominant characteristics. In the test cross, an F2 plant that shows the dominant trait is crossed with the homozygous recessive.
39. When a single gene controls the expression of more than one character, it is said to be ___:
[A] Heterotrophic
[B] Autotrophic
[C] Pleiotropic
[D] Allotropic
Show Answer
Correct Answer: C [Pleiotropic]
Notes:
When a single gene has an effect on the expression of two or more phenotypic traits, it is said to have a pleiotropic effect on the traits. For example, testosterone controls the development of what are referred to as secondary sexual characteristics, but it also relates to behavioral traits like aggression. Thus, a gene that controls the levels of testosterone would have a pleiotropic effect on the expression of many secondary sexual traits which are morphological, as well as behavioral.
40. The yellow colour of urine is due to presence of ____:
[A] Bile
[B] Lymph
[C] Urochrome
[D] Cholesterol
Show Answer
Correct Answer: C [Urochrome]
Notes:
The color of normal urine is usually light yellow to amber. Generally, the greater the solute volume the deeper the color. The yellow color of urine is due to the presence of a yellow pigment, urochrome. Deviations from normal color can be caused by certain drugs and various vegetables such as carrots, beets, and rhubarb.
