Which of the following items relate specifically to purines? Select all that apply.A) nucleotides with a single ringB) adenineC) cytosineD) nucleotides with a double ringE) guanine

What will be an ideal response?


B, D, E

Adenine and guanine are purines. Purines are nucleotides with a double ring structure.

Biology & Microbiology

You might also like to view...

You may have heard that monarch butterflies (and their caterpillars) are "poisonous" to many predators. What makes these insects so toxic?

A. Monarch caterpillars produce cardenolides in their digestive tracts. B. Monarch caterpillars use cardenolides from milkweed to synthesize toxins. C. Monarch caterpillars ingest milkweed latex which "chokes" their predators. D. Monarch caterpillars store cardenolides from milkweeds. E. Monarch caterpillars secrete latex from their bodies.

Biology & Microbiology

Which of the following is a type of gland that

lacks ducts?

a. endocrine b. muscular c. nervous d. exocrine e. connective

Biology & Microbiology

Exchange of genetic material among different species is called

A. homolgous gene exchange. B. horizontal gene transfer. C. exon shuffling. D. genetic recombination. E. exon shuffling and or genetic recombination.

Biology & Microbiology

Spontaneous generation is the belief that

What will be an ideal response?

Biology & Microbiology