Which of the following macromolecules is matched with its correct role in the cell? Choose 1
Choose 1

(Choice A)
A
Lipid — storage of short-term energy

(Choice B)
B
Lipid — chemical messenger

(Choice C)
C
Carbohydrate — key component of cell membrane (lipid bilayer)

(Choice D)
D
Nucleic acid — chemical messenger

In a cladogram' when does a group of organisms branch off

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.