Incorrect Practice Questions Flashcards
Which of the following secretes relaxin during the later stages of pregnancy?
corpus luteum - foetus - uterus - Graafian follicle
corpus luteum
Which of the following are correct regarding linked genes?
I. located next to each other on the same chromosome
II. violate the law of independent assortment
III. segregate together during meiosis
I, II & III
Down Syndrome was first described in the year
1866
Blood group antigens are ________
carbohydrates present on surface of RBCs
Find the incorrect match:
pedigree analysis - Mendelian trait
Henking’s X body - one each in sperm
Pleiotropy - Single gene multiple phenotype
Polygenic inheritance - across a gradient
Henking’s X body - one each in sperm
Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
Dominance, Co-dominance, Multiple dominance, Polygenic Inheritance, Incomplete dominance
Dominance, Co-dominance, Multiple dominance
The process of splicing in eukaryotes:
a) is reminiscent of antiquity
b) represents the dominance of RNA-world
c) is an indicator of the complexity of the human genome
d) is a legacy of organic evolution
b) represents the dominance of RNA-world
Which enzyme polymerizes RNA with defined sequences in a template independent manner?
Polynucleotide phosphorylase
The core RNA polymerase is capable of catalyzing which steps of transcription?
Initiation - Elongation - Termination - Al of these
Elongation only
Polymerisation of which of the following produces nucleic acids?
nucleosides - nucleotides - DNA and RNA - Both 1 and 2
nucleotides
In lac operon, repressor is inactivated by interaction with ________
carbohydrate - protein - nucleic acid - enzyme
carbohydrate
Hashish causes altered thought perceptions and hallucinations? T or F?
True
Opium stimulates the nervous system and causes hallucinations. T or F?
False
Barbiturates cause relaxation and temporary euphoria. T or F?
False
Which of the following sets of diseases is caused by bacteria?
a) Cholera and tetanus
b) Typhoid and smallpox
c) Tetanus and mumps
d) Herpes and influenza
a) Cholera and tetanus
As the housefly is related with Entamoeba histolytica, Aedes mosquito is related with _______
Virus
Cells of immune system that do not provide innate immunity:
T-lymphocytes - Neutrophils - NK cells - Macrophages
T-lymphocytes
Alpha-interferons can:
a) suppress the immune system
b) activate the immune system
c) destroy a tumor
d) both #2 and #3
d) both #2 and #3
Mast cells secrete ________
histamine
Vaccines are available for which of these diseases:
polio - diptheria - pneumonia - tetanus
all of them
Which is the most common mechanism of genetic variation in a population that reproduces asexually?
a) Transduction
b) Chromosomal aberrations
c) Genetic drift
d) Recombination
d) Recombination
Process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental change is:
a) adaptive radiation
b) non-random evolution
c) convergent evolution
d) natural selection
c) convergent evolution
Which of the following are analogous structures?
a) Wings of bat and wings of pigeon
b) Gills of Prawn and Lungs of Man
c) Thorns of Bougainvillea and Tendrils of Cucurbita
d) Flippers of Dolphin and Legs of Horse
b) Gills of Prawn and Lungs of Man
Hysterectomy is surgical removal of _____
uterus
Assisted reproductive technology involves the transfer of:
a. ovum into fallopian tube
b. zygote into fallopian tube
c. zygote into uterus
d. embryo (up to 16 blastomeres) into fallopian tube
b. zygote into fallopian tube
Cu ions released from IUDs:
a. make uterus unsuitable for implantation
b. increase phagocytosis of sperms
c. suppress sperm motility
d. prevent ovulation
c. suppress sperm motility (and fertilizing capacity)
Which of the following is incorrect wrt vasectomy?
a) No sperm occurs in seminal fluid
b) No sperm occurs in vasa efferentia
c) Vasa deferentia is cut and tied
d) Irreversible sterility
b) No sperm occurs in vasa efferentia
Which of the following is checked by amniocentesis?
a) Biochemical abnormalities in the foetus
b) Errors of metabolism in the foetus
c) Chromosomal abnormalities in the foetus
d) All of the above
c) Chromosomal abnormalities in the foetus
The most important component of oral contraceptive pills is progesterone. T or F?
True
Oral contraceptives do not work by:
a) inhibition of ovulation
b) changing the consistency of cervical mucus
c) antagonistic action on gonadotropins
d) spermicidal action
d) spermicidal action
Saheli contains a steroidal preparation. True or False?
False, non-steroidal
Pill is to be taken daily for ________
21 days beginning within first 5 days of menstruation
In lactational amenorrhea, there is no ovulation or menstruation during period of intense lactation following parturition due to high level of prolactin which inhibits the release of _______
gonadotropins
Several South Indian states yield 2-3 crops of rice annually. The agronomic feature that makes this possible is:
a) shorter rice plant
b) better irrigation facilities
c) early yielding rice variety
d) disease-resistant rice variety
c) early yielding rice variety
Lysine and tryptophan are:
a) proteins
b) non-essential amino acids
c) essential amino acids
d) aromatic amino
c) essential amino acids
Protoplast is:
a) another name for protoplasm
b) animal cell
c) plant cell without cell wall
d) plant cell
c) plant cell without cell wall
The crops engineered for glyphosate are resistant/tolerant to _______
herbicides
Bioethanol can be produced using which of the following plants:
a) Brassica
b) Zea maize
c) Jatropha
d) Pongamia
b) Zea maize
Mutations can be induced with gamma or infrared radiations?
Gamma
A system of rotating crops with legume or grass pasture to improve soil structure is called _______
ley farming
NOT a step in MOET?
a) Cow is fertilized by artificial insemination
b) Fertilized eggs are transferred to surrogates at 8-32 cell stage
c) Cow is administered hormone that has LH-type activity for super ovulation
d) Cow yields about 6-8 eggs at a time
c) Cow is administered hormone that has LH-type activity for super ovulation
IT’S FSH!!!
Himgiri, a disease-resistant plant variety is not associated with:
a) wheat
b) hill bunt
c) white rust
d) leaf and stripe rust
c) white rust
Which of the following is not an insect pest resistant variety?
a) Pusa Gaurav
b) Pusa Sawani
c) Pusa A-4
d) Karan Rai
d) Karan Rai
BOD of waste water is estimated by measuring the amount of:
a) total inorganic matter
b) biodegradable organic matter
c) oxygen evolution
d) oxygen consumption
d) oxygen consumption
Methanogenic bacteria are not found in:
a) rumen of cattle
b) gobar gas plant
c) bottom of water-logged paddy fields
d) activated sludge
d) activated sludge
Methane is the preferred carbon source of methanogens. True or False?
False
Methane are archaebacteria. T or F?
True
Trichoderma harzianum is a useful micro-organism for biological control of soil-borne plant pathogens. T or F?
True
Baculoviruses are pathogens of anthropods used as biocontrol agents. T or F?
T
Common biocontrol agent for plant disease is:
a) Bt
b) Glomus
c) Trichoderma
d) Baculovirus
c) Trichoderma
Which of these is not a biofertilizer?
Rhizobium - Nostoc - Mycorrhiza - Agrobacterium
Agrobacterium
Which helps in absorption of phosporus from soil by plants? Glomus or Rhizobium or Anabaena
Glomus
Which of the following is not an example of a biopesticide:
a. Bt corn
b. Bt cotton
c. Bt soyabean
d. chili
d. chili
