While studying chromosomes with an electron microscope, you identify a structure that resembles a tangled web of beaded strings. What are the strings in this structure?

a. histones
b. nucleosomes
c. DNA molecules
d. transcription factors


c. DNA molecules

Biology & Microbiology

You might also like to view...

Which of the following correctly lists the six most abundant elements found in living organisms?

A. carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur B. water, carbon, oxygen, nitrogen, phosphorus, sulfur C. water, carbon, hydrogen, oxygen, nitrogen, salt D. carbon, hydrogen, oxygen, carbon dioxide, nitrogen, salt

Biology & Microbiology

The receptors for many of the hormones involved in the menstrual cycle are found in the cytoplasm

A. true B. false

Biology & Microbiology

During noncyclic electron flow of the light reaction, which molecule is the final acceptor of the high-energy electron?

A. oxygen B. P700 C. NADP+ D. P680 E. ATP synthase

Biology & Microbiology

In a plasmid vector, the purpose of the lacZ gene is

a. to allow replication of the plasmid. b. to allow selection of transformed bacterial cells. c. to allow the plasmid to be cut once for cloning a fragment. d. to protect the plasmid from digestion by exonucleases. e. as an indicator that the plasmid is recombinant, containing a DNA insert.

Biology & Microbiology