7. If you have a 100-base pair DNA molecule that contains 45 cytosines, how many adenines are there?

5 adenines

Explanation:

Cytosine pairs with Guanine, and Adenine pairs with Thymine. This means, that if there are 45 cytosines, there must be 45 guanines. So that's 90 base pairs down. That means that there are 10 left between adenine and thymine- so that means there are 5 adenines

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

click to let others know, how is it

read more on -