A discrete continuous molecule of DNA, wrapped with its associated proteins, defines the term

image
Mitosis
This diagram shows how DNA is packaged and folded with its associated protective and regulatory proteins.

A. genome.
B. nucleosome.
C. centromere.
D. chromosome.
E. histone.


D. chromosome.

Biology & Microbiology

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Systemic lupus erythematosus (SLE) is an example of a disease caused by type ________ hypersensitivity

A) I B) II C) III D) IV

Biology & Microbiology

Cutaneous mycoses are called ________.

A. tineas B. dermatomycoses C. ringworms D. All of the choices are correct.

Biology & Microbiology

Which of the following statements about signal propagation is true?

a. Signaling pathways are simple and linear. b. Signaling pathways can randomly be disrupted by internal errors and will automatically reset. c. Signaling pathways can get very complicated because most cellular proteins can affect different downstream events. d. Mutations have no effect on propagation of signaling pathways.

Biology & Microbiology

Which is the best example of the results of a

neutral mutation?

a. A new wing color evolves that enables a butterfly to better hide. b. A new wing color evolves that makes a butterfly more noticeable. c. Larger muscles evolve that allow a rabbit to run faster. d. A new wing color evolves that doesn’t affect a butterfly’s ability to hide or make it more noticeable. e. Larger eyes develop that enable a rat to see better at night.

Biology & Microbiology