Biopassionate
BIOLOGY KCET 2023
Human Health and Diseases
Identify the symptoms of pneumonia.
A
High fever, weakness, stomach pain, loss of appetite
B
Difficulty in breathing, fever, chills, cough, headache
C
Nasal congestion and discharge, cough, sore throat, headache
D
Constipation, Abdominal pain, cramps, blood clots
B. Difficulty in breathing, fever, chills, cough, headache
Strategies for Enhancement in Food Production
With respect to Inbreeding, which among the following is not true?
A
It helps to evolve a pure line in an animal
B
Inbreeding decreases homozygosity
C
It helps in accumulation of superior genes
D
It helps in elimination of less desirable genes
B. Inbreeding decreases homozygosity
Biotechnology Principles and Processes
Select the correct statement from the following:
A
DNA from one organism will not band to DNA from other organism
B
Genetic engineering works only on animals and not yet successfully used on plants
C
There are no risk factors associated with r-DNA technology
D
The first step in PCR is heating which is used to separate both the strands of gene of interest
D. The first step in PCR is heating which is used to separate both the strands of gene of interest
Molecular Basis of Inheritance
During transcription the DNA strand with 3’ → 5' polarity of the structural gene always acts as a template because
A
Nucleotides of DNA strand with 5' → 3' are transferred to mRNA
B
Enzyme DNA dependent RNA polymerase always catalyse the polymerisation in 5’ → 3' direction
C
Enzyme DNA dependent RNA polymerase always catalyse the polymerisation in 3' → 5' direction
D
Enzyme DNA dependent RNA polymerase always catalyse polymerisation in both the directions
B. Enzyme DNA dependent RNA polymerase always catalyse the polymerisation in 5’ → 3' direction
Biodiversity and Conservation
According to David Tilman's long term ecosystem experiments, the total biomass in plots with more species shows
A
No variation from year-to-year
B
Less variation from year-to-year
C
High variation from year-to-year
D
Average variation from year-to-year
B. Less variation from year-to-year
Environmental Issues
Identify the correct option showing the relative contribution of different green house gases to the total global warming.
A
CFC-14%, CO₂-60%, Methane-6%, N₂O-20%.
B
CFC-14%, CO2-60%, Methane-20%, N₂O-6%.
C
CFC-20%, CO₂-60%, Methane-14%, N₂O-6%.
D
CFC-6%, CO2-60%, Methane-20%, N₂O-14%.
B. CFC-14%, CO2-60%, Methane-20%, N₂O-6%.
Biotechnology Principles and Processes
From the following tools / techniques of genetic engineering, identify those which are required for cloning a bacterial gene in animal cells and choose the correct option:
A
II, III, IV, VI, VII, VIII
B
II, III, V, VII, VIII
C
I, II, IV, VI, VIII
D
I, III, IV, V, VII
C. I, II, IV, VI, VIII
Ecosystem
Identify the incorrect statement regarding the flow of energy between various components of the food chain.
A
Each trophic level loses some energy as heat to the environment
B
The amount of energy available at each trophic level is 10% of previous trophic level
C
Energy flow is unidirectional
D
Green plants capture about 10% of the solar energy that falls on leaves
D. Green plants capture about 10% of the solar energy that falls on leaves
Body Fluids and Circulation
Identify the option showing the correct labelling for p, q, r and s with reference to the conducting system of the human heart.
A
p- Interventricular septum, q-AVN, r-Bundle of His, s-SAN
B
p-SAN, q-AVN, r-Bundle of His, s-Interventricular septum
C
p-AVN, q-SAN, r-Interventricular septum, s-Bundle of His
D
p-Bundle of His, q-SAN, r-Interventricular septum, s-AVN
p-SAN, q-AVN, r-Bundle of His, s-Interventricular septum
Human Reproduction
Consider the following statements with reference to female reproduction system: Statement 1. The presence or absence of hymen is not a reliable indicator of virginity or sexual experience. Statement 2. The sex of the foetus is determined by the father and not by the mother. Choose the correct option from the following:
A
Both the Statement 1 and Statement 2 are wrong.
B
Statement 1 is correct and Statement 2 is wrong.
C
Both the Statement 1 and Statement 2 are correct.
D
Statement 1 is wrong and Statement 2 is correct.
C. Both the Statement 1 and Statement 2 are correct.
Human Reproduction
The male sex accessory ducts include,
A
Rete testis, vasa efferentia, epididymis and vas deferens
B
Rete testis, vasa efferentia, epididymis and seminal vesicle
C
Rete testis, urethra, epididymis and vas deferens
D
Rete testis, vasa efferentia, seminal vesicle and vas deferens
A. Rete testis, vasa efferentia, epididymis and vas deferens
Principles of Inheritance and Variation
Which of the following statements is correct?
A
Female carrier for haemophilia may transmit the disease to sons
B
Thalassemia is a qualitative problem
C
Change in whole set of chromosomes is called aneuploidy
D
Sickle cell anaemia is a quantitative problem
A. Female carrier for haemophilia may transmit the disease to sons
Principles of Inheritance and Variation
Find the correct statement. (1) Generally a gene regulates a trait, but sometimes one gene has effect on multiple traits. (2) The trait AB-blood group of man is regulated by one dominant allele and another recessive allele. Hence it is co-dominant.
A
Both the Statements are wrong
B
Statement (1) is correct
C
Statement (2) is correct
D
Both Statements (1) and (2) are correct
B. Statement (1) is correct
Human Reproduction
From the following table, select the option that correctly characterizes various phases of menstrual cycle: Menstruation phase, Follicular phase, Luteal phase;
A
Regeneration of endometrium, High level of progesterone, Developing corpus luteum
B
Matured follicle, Regression of corpus luteum, Ovulation
C
Menses, Developing corpus luteum, Follicle maturation
D
Menses, L.H. Surge, Regeneration of endometrium
Menses, L.H. Surge, Regeneration of endometrium
Principles of Inheritance and Variation
In one of the hybridisation experiments, a homozygous dominant parent and a homozygous recessive parent are crossed for a trait. (Plant shows Mendelian inheritance pattern)
A
Dominant parent trait appears in F2 generation and recessive parent trait appears only in F1 generation
B
Dominant parent trait appears in F1 generation and recessive parent trait appears in F2 generation
C
Dominant parent trait appears in both F1 & F2 generations, recessive parent trait appears in only F2 generation
D
Dominant parent trait appears in F1 generation and recessive parent trait appears in F1 and F2 generations
C. Dominant parent trait appears in both F1 & F2 generations, recessive parent trait appears in only F2 generation
Environmental Issues
Four students were assigned a science project to find out the pollution levels of lakes in their surrounding. After analysing the quality of water samples, the BOD values were found as follows: Which among the following water samples is highly polluted ?
A
0.16 mg/L
B
0.6 mg/L
C
0.06 mg/L
D
6 mg/L
D. 6 mg/L