Which of the following statements about dna and rna is incorrect?
a) rna contains the pentose sugar ribose while dna contains deoxyribose.
b) they both contain nitrogenous bases
c) both contain long chains of amino acids.
d) both take part in protein synthesis.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this