What is the link reaction in aerobic respiration?
a. pyruvate is carboxylated, acetyl reacts with coenzyme a, reducing nadh + h+
b. pyruvate is decarboxylated, acetyl reacts with coenzyme a, forming nadh + h+
c. pyruvate reacts with coenzyme a, forming nadh + h+
d. pyruvate is decarboxylated, reacting with coenzyme a, reducing nadh + h+

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

Amines amides and amino acids are categories of