5
biology sem 1
pretest: unit 2
question 17 of 34
1 point
which of the following do all living things share?
o
a. the same organs
are organs
o
b. the need to breathe
o
c. the same shape -
d. the same elements
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B

Explanation:

All living things need to breathe, even the microorganism which breathe by a process called diffusion. They might breathe using different of mechanisms or organs but THE POINT IS THEY NEED TO BREATHE.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.