Osteichthyes is a group of fish that have the derived characteristics of jaws and true bones. Which letter corresponds to where Osteichthyes belongs on the cladogram? A B C D

the answer is b.) hydrogen bonds between bases.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

c.           is the correct answer