What structural problem prevents adenine from pairing with guanine? a. the bases are both short b. the bases are both long c. they lack phosphate groups d. they lack the deoxyribose group

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

that scientist would be robert hooke

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.