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TLS Online TPP Program

#Question id: 5817

Why is alkyltransferase only able to be used once?

#Unit 8. Inheritance Biology

  1. The protein is hydrolyzed in the process of repairing the DNA.

  2. The protein is chemically changed by the addition of a methyl group.

  3. The protein becomes attached to the DNA strand.

  4. All of these.

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TLS Online TPP Program

#Question id: 1026

#Unit 4. Cell Communication and Cell Signaling

Peptidoglycan
TLS Online TPP Program

#Question id: 2360

#Unit 2. Cellular Organization

A mitochondrion has a(n) ______ , an inner space filled with a gel-like fluid.
TLS Online TPP Program

#Question id: 5752

#Unit 8. Inheritance Biology

base change that changes a codon for an amino acid to a stop codon
TLS Online TPP Program

#Question id: 12240

#Unit 10. Ecological Principles

Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species    often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and Y could generate this pattern?
TLS Online TPP Program

#Question id: 975

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the source of the C-6 atom during de novo biosynthesis of purines?