Matching Choose the Correct Answer from the List.Not All the Answers

question 24

Multiple Choice

Matching
Choose the correct answer from the list.Not all the answers will be used.

-_________ topoisomerases that make double-strand breaks in DNA in a controlled fashion.

• A) type I
• B) ribocatalyzers
• C) C2´-endo
• D) repressors
• E) ethidium
• F) type II
• G) C3´-endo
• H) hybridized
• I) interchanged
• J) supercoiled
• K) cooperative
• L) non-cooperative
• M) underwound
• N) ribozymes
• O) deuterium
• P) zinc finger
• Q) leucine zipper

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Definitions:

Archenteron

The primitive gut formed during the early development of an embryo, which later differentiates into the digestive tract of an animal.

Ectoderm

The embryonic external layer of cells or tissue that forms early on and develops into the skin and nervous system.

Mesoderm

The middle layer of an embryo in early development, between the endoderm and ectoderm, which gives rise to muscles, bones, and blood tissues.

Germ Layer

Each of the three layers of cells (ectoderm, mesoderm, and endoderm) that form during embryogenesis, which give rise to all tissues and organs of an organism.