What does the letter "a" stand?

a)
acid
b)
adenine
c)
adrenaline
d)
amorphous

the answer is (b)adenine

Which of the following is a common response to cell signaling?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata