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TLS Online TPP Program

#Question id: 1056

During penetration of E. coli by the T4 phage

#Unit 4. Cell Communication and Cell Signaling

  1. lysozyme is used to allow entry of the phage capsid.

  2. the tail acts as a "hypodermic needle," injecting the phage DNA into the cell.

  3. the protein fibers digest a hole in the cell wall.

  4. the bacterial receptor molecules open a hole through the cell wall.

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TLS Online TPP Program

#Question id: 10752

#Unit 10. Ecological Principles

Which of the following is an example of Batesian mimicry?

A) a butterfly that resembles a leaf

B) a nonvenomous larva of a moth that moves like a venomous snake

C) a fawn with fur coloring that camouflages it in the forest environment

D) a snapping turtle that uses its tongue to mimic a worm, thus attracting fish
TLS Online TPP Program

#Question id: 4744

#Unit 8. Inheritance Biology

Assume that long ear lobes in humans are an autosomal dominant trait that exhibits 50% penetrance. A person who is heterozygous for long ear lobes mates with a person who is homozygous for normal ear lobes. What is the probability that their first child will have long ear lobes.
TLS Online TPP Program

#Question id: 15008

#Unit 8. Inheritance Biology

You have a white eyed, male fruit fly with vestigial wings and a wild type female known to be heterozygous for both traits. You know that vestigial is located on an autosome. What is the probability that a mating between these two flies will generate a female offspring with vestigial wings and white eyes?
TLS Online TPP Program

#Question id: 17266

#Unit 11. Evolution and Behavior

First human social life in vertebrates and decline of woody plants appeared in ____
TLS Online TPP Program

#Question id: 5019

#Unit 11. Evolution and Behavior

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the