Biology Quiz Prelims

7/31/2019 Biology Quiz Prelims

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Intersection Biology Quiz

Prelims

Q1) In an unreported incident, 2 tourists in Thailand accidently ate wild

fungi and after a few days had to be taken to the hospital on

account of complete liver failure. The government had to

compensate them completely to maintain good tourist

relationships. Five years on, the government has spent over a 50

Lakh Baht (around 1 crore rupees). The identified cause of Liver

failure was Aflatoxins, released by the fungi. Name the fungi which

they mightve eaten. (Hint: This Fungus, source of Aflatoxins, is also

sometimes called the Weed of the laboratory) [3]

Q2) In 1953, on a starry night, a man boldly entered an English bar anddeclared I have found the secret of life. 3 years later, he received

a Nobel Prize 3 years later, in 1956 along with a colleague of his.

Interestingly, this colleague shares his surname with a sidekick of

probably one of the most famous detectives. Identify the duo [3]

Q3) How much do you really know about blood? [0.5*6=3]

A) Which organ has highest blood supply?

B) Which tissue has no blood supply?

C) Whats the colour of a lobster/prawns blood?

D) In an Earthworm, where is haemoglobin present?


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E) In a healthy individual, what is the approximate difference

between pulse and heart rate?

F) Approximately how many times is the left ventricle thicker than

the right ventricle?

Q4)We all enjoy fast food, dont we? There is fast food in biology too.

Hamburgers Phenomena is involved in a process essential for our

survival. It governs movement of chloride ion against bicarbonate

ion across a membrane. Which membrane/ cell is this related to?

[3]

Q5)Rank the following animals in order of their closeness to

Mammals (in evolutionary terms)?

Earthworm (I), Star Fish (II), Octopus (III), Shark (IV) [3]

Q6) All of us must have felt an electric spark/shock in our lives. The

Voltage difference between us and the source of charge is not as

important as is the current passing through us. Consider the

following facts:

A current of 0.01 Ampere produces a tingling sensation A current of approx 0.1 to 0.15 Ampere causes defibrillation of the

heart

A current greater than 1 Ampere causes the heart to completelystop.

Yet, very high currents of around 1 Ampere and considered better

than those around 0.1 to 0.15 Ampere. Why? [5] [TIE BREAKER]


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Q7)____R____ tablets are prepared from enzymes obtained from the

stomach of calf to help in digestion of milk proteins

in humans. Identify R. [3]

Q8) Which of the following animals is different from others as it does

not maintain an internal environment with respect to concentration of

water?

[Dog Fish], [Cat Fish], [Gold Fish], [Puffer Fish] [3]

Q9) Name the following: [0.5 each] [bonus 3 points if at least 6 are

correct]

1.Element which is present in maximum percentage in our body?2.Largest flower in plant kingdom?3.Mammal whose heart is closest to human heart?4.Largest cell in human females?5.Fastest Bird?6.Largest snake?7.Mammal generally used to produce snake antivenom/cure for

tetanus to be used in humans?

8.Protein which lowers activation energy in biochemical reactions andthus helps speed up (or in some cases, slow down) the reaction.

9.What is the average volume of a human lung?10.Potato is a modified ____________.11.An extra-nuclear DNA sequence in eukaryotes.12.Animal which has been called the Best Meat-Making machine

nature has created?


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Q10) The first attempted human deceased-donor transplant was

performed by the Ukrainian surgeon Yu Yu Voronoy in the 1930s;

rejection resulted in failure. Joseph Murray and J. Hartwell Harrison

performed the first successful transplant, a kidney transplant in

1954, successful because no immunosuppression was necessary.

Back then, blood tests were not very common. He was lucky

because of the fact that he used __X___ for the transplant which

ensured, under ideal conditions, no rejection due to mismatching of

blood. Without any knowledge of the actual procedure, suggest a

possibility as to what the term X could be. [5] [TIE BREAKER]

Q11)True or False? [0.5 *8=4]

A: A salamander is a warm blooded animal

B: The primary use of changing colour by a Chameleon is for

camouflage, not regulation of body temperature or

communication.

C: There are at least 4 seeds per banana fruitD: Liver is the largest organ of the human body.

E: Arm contains the longest muscle of the human body.

F: Starfish can regenerate lost limbs.

G: HIV AIDS can be communicated very easily by normal contact.

H: A and T are examples of purines.

Q12) DNA is a HUGE molecule, with unusually high stability and of

universal occurrence in organism (except for some RNA viruses). It

is packaged with the help of Lysine and Arginine (amino acids) rich

proteins called histones. What is the charge on a DNA molecule?

[2]


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Q13) Although a handful of Asian giant hornets can easily defeat the

defenses of many individual honey bees, whose small stings cannot

inflict much damage against such a large predator, the Japanese

honey bee (Vespa mandarinia) possesses a collective defense

against them. When a hornet attacks the beehive, a hundred or so

bees will gather near the entrance of the nest and set up a trap,

keeping it open apparently to draw the hornet further into the hive

or allow it to enter on its own. As the hornet enters the nest, a

large mob of about five hundred honey bees surrounds it,

completely covering it and preventing it from moving. Even though

none of them sting the hornet, or cause asphyxiation, the hornet is

dead within 20 minutes. What could be the possible cause of

death. [5] [TIE-BREAKER]

Q14) A species of marine grass was discovered in the Mediterranean

Sea and at first wasnt considered a single organism; however,

further investigation showed that the grass spanned 8 kilometers,and each section had exactly the same DNA. It's estimated to be

100,000 years old. Which Greek god was the plant named after?

Hint: Its a marine organism. [3]


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Q15) Identify the following: [3*3=9]

Part A) B) C)

Pictur

e

Hint Father of

microbiology,

inventor of a

method to kill

pathogens in

milk by rapid

heating and

subsequent

cooling

Indias only Nobel

Prize for

Physiology and

Medicine winner

for research that

helped to show

how the

nucleotides

control the cells

synthesis of

proteins

He wrote On the

Origin Of Species

and is one of the

most

recognizable

faces in biology.

Closely linked

with the theory

of evolution.

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Biology Quiz Prelims