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TLS Online TPP Program

#Question id: 4602

If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?

#Section 2: Evolution

  1. These genes would be maintained in case the antibiotics appear.

  2. These bacteria would be outcompeted and replaced by bacteria that have lost these genes.

  3. These bacteria would try to make the cost worthwhile by locating and migrating to microenvironments where traces of antibiotics are present.

  4. The number of genes conveying antibiotic resistance would increase in these bacteria.

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TLS Online TPP Program

#Question id: 16832

#General Aptitude

Which figure is a rotation of the object?
TLS Online TPP Program

#Question id: 3491

#Section 4: Behavioural Ecology

Some dogs love attention, and learns that if he barks, he gets attention. Which of the following might you use to describe this behavior?

A) The dog is displaying an instinctive fixed action pattern.

B) The dog is trying to protect its territory.

C) The dog has been classically conditioned.

D) The dog's behavior is a result of operant conditioning

E) The dog is displaying controlled by external stimuli
TLS Online TPP Program

#Question id: 10897

#Section 2: Evolution

When three species of sunfish with similar niches were all placed in the same experimental pond, each made use of resources that they did not exploit in the absence of the other species. This scenario is referred to as
TLS Online TPP Program

#Question id: 10606

#Section 1: Ecology

Identify the incorrect combination from the following list
TLS Online TPP Program

#Question id: 12287

#Section 1: Ecology

Food chains are sometimes short because