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TLS Online TPP Program

#Question id: 2726

Which property is shared by the five histone proteins?

#Unit 2. Cellular Organization

  1. They are acidic proteins with relatively large molecular weights.

  2. They are multimeric proteins with high levels of Arg and Lys.

  3. They are fibrous proteins with high amounts of α-helix.

  4. They are globular proteins with a positive charge.

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TLS Online TPP Program

#Question id: 5022

#Unit 11. Evolution and Behavior

Almost all of the major animal body plans seen today appeared in the fossil record over 500 million years ago at the beginning of the
TLS Online TPP Program

#Question id: 2441

#Unit 2. Cellular Organization

Which of the following statement(s) is (are) true of microtubule assembly?

a. GDP-tubulin normally assembles into microtubules.

b. Microtubule (-) ends grow faster than microtubule (+) ends.

c. Tubulin subunits assemble to form a protofilament.

d. Microtubules consist of multiple protofilaments.

e. Microtubules with a GTP cap will shorten.
TLS Online TPP Program

#Question id: 33911

#Unit 2. Cellular Organization

What is the Lk of a 5,000 bp circular duplex DNA molecule after eight enzymatic turnovers by a single molecule of DNA gyrase in the presence of ATP followed by 8 enzymatic turnovers by a single molecule of bacterial type I topoisomerase
TLS Online TPP Program

#Question id: 3615

#Unit 8. Inheritance Biology

What are alleles?
TLS Online TPP Program

#Question id: 12806

#Unit 10. Ecological Principles

Which  of  the  following  areas  of  study  focuses  on  the  exchange  of  energy,  organisms,  and  materials  between ecosystems?