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TLS Online TPP Program

#Question id: 4511

The proteins are not needed for the splicing reaction itself, because

#Unit 3. Fundamental Processes

  1. In vivo, the intron is complexed with several proteins that help stabilize the correct structure-partly by shielding regions of the backbone from each other.

  2. The negative charges provided by the phosphates in those backbone regions would repel each other if shielded.

  3. In vitro, high salt concentrations (and thus positive ions) compensate for the absence of these proteins.

  4. Only a and d

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TLS Online TPP Program

#Question id: 17806

#Unit 9. Diversity of Life Forms

Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants? 
TLS Online TPP Program

#Question id: 17807

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. What is the probability that a child will be albino if: Both parents are non-albino members of Generation 2?
TLS Online TPP Program

#Question id: 17808

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. What is the probability that a child will be albino if: One parent is a non-albino member of Generation 2, and the other parent is a non-albino member of Generation 1.
TLS Online TPP Program

#Question id: 17809

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. What is the probability that a child will be albino if: Both parents are members of Generation 2, and one parent is albino and the other is non-albino.
TLS Online TPP Program

#Question id: 17810

#Unit 11. Evolution and Behavior

Triassic period of Mesozoic era has characteristics by___
TLS Online TPP Program

#Question id: 17811

#Unit 7. System Physiology – Animal

Distress can lead to ______.