Practice Questions

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#Question id: 1022

Why are we concerned at all with monitoring emerging/reemerging diseases?

#Unit 4. Cell Communication and Cell Signaling

These represent growing threats to human health that will require new scientific research and resources to effectively combat.
Because globalization (greater trade and travel between countries) leads to more chances for spread of illnesses into new areas and populations. Monitoring these illnesses will help us to protect people.
Because the speed of travel has increased greatly. With increased speed of travel, it is far more likely that a serious pathogenic threat from one area of the world can spread rapidly across the globe in a very fast manner. We need to monitor the occurrence of these illnesses to try to protect populations.
All of the above.

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TLS Online TPP Program

#Question id: 15147

#Unit 8. Inheritance Biology

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;

you cross each haploid mutant strain to a different haploid mutant of the opposite mating type. From the results shown below deduce as much as you can about which mutations lie in the same gene. Clearly state any remaining ambiguities and suggest some general ways that the ambiguities might be resolved

a) That mutants 1 and 3 form one complementation group and are mutations in the same gene (gene A)

b) That mutations 2 and 5 form a second complementation group and are mutations in a second gene (gene B).

c) That mutations 3 and 5 form a second complementation group and are mutations in a second gene (gene B).

d) The first ambiguity is whether mutant 4 has a mutation in gene A or B, or whether it represents a unique gene.

Which of the following is the correct prediction about mutants?

TLS Online TPP Program

#Question id: 12221

#Unit 7. System Physiology – Animal

Juvenile (type I) diabetes mellitus is often diagnosed because of polyuria (high urine flow) and polydipsia (frequent drinking) that occur because of which of the following?

TLS Online TPP Program

#Question id: 22947

#Unit 5. Developmental Biology

FLOWERING LOCUS M (Floral repressor) that is expressed in leaves and apex, belongs to:

TLS Online TPP Program

#Question id: 11562

#Unit 7. System Physiology – Animal

The relationship between the insect hormones ecdysteroid and PTTH is an example of ________.

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#Question id: 18088

#Unit 13. Methods in Biology

If a coin is tossed 5 times, then consider the following statements:

I: Probability of getting exactly 2 heads is 5/16.

II: Probability of getting at least 4 heads is 3/16.

III: Probability of getting at most 2 heads is 5/8.

Which one of the following is correct in respect of the above statements