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TLS Online TPP Program

#Question id: 8852

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?

#SCPH06 I Botany
  1. Humans and bats evolved by natural selection, and whales evolved by Lamarckian mechanisms.
  2. Forelimb evolution was adaptive in people and bats, but not in whales.
  3. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.
  4. Genes mutate faster in whales than in humans or bats.
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TLS Online TPP Program

#Question id: 101

#SCPH28 | Zoology

You have two bottles, each of which contains a white, crystalline substance. Your lab director tells you that one contains lactose and the other sucrose. Your job is to determine which bottle contains which sugar. Which procedure would you use?
TLS Online TPP Program

#Question id: 15479

#SCPH28 | Zoology

Out of the following what usually supports the fastest growth rate and is therefore considered the preferred nitrogen source for E. coli
TLS Online TPP Program

#Question id: 919

#SCPH05 I Biotechnology

Carnitine is:
TLS Online TPP Program

#Question id: 6960

#SCPH06 I Botany

At the blastocyst stage during mammalian embryonic development, the specification of trophectoderm requires ________; whereas in inner cell mass _________activation is essential.
TLS Online TPP Program

#Question id: 554

#SCPH28 | Zoology

The Lineweaver-Burk plot is used to: