A cell is exposed to EMS (a mutagen that causes guanine to mispair with thymine) and allowed to undergo a few rounds of DNA replication.  The mutational event caused by this mutagen will be

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#Question id: 11537

#Unit 7. System Physiology – Animal

Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of ________.

 I) an autocrine signal

 II) a paracrine signal

 III) an endocrine signal

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#Question id: 26956

#Unit 10. Ecological Principles

if you counted densities of 90, 110, 105, and 95 plants in four quadrats. What is the average density of this species?

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#Question id: 15770

#Unit 5. Developmental Biology

During development, if a cell has committed to a particular fate, it is said to be

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#Question id: 15176

#Unit 2. Cellular Organization

Some Psychrophiles which can grow at maximum temperature of about 35°C, they are called as 

A. Obligatory psychrophiles

B. Facultative psychrophiles

C. Psychrotrophs

D. Mesophiles

Which combination given below is correct.

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#Question id: 16091

#Unit 7. System Physiology – Animal

The most significant heat source in the body is: