What is the greatest challenge to organisms that live in a desert biome?

a. hot temperatures

b. water loss

c. sandy soil

d. strong winds

You are observing proteins in a lab for an experiment. During transport, they have started to unwind and lose their shape. You notice long strands wound into alpha helices. What level of structure are the proteins in? A. Tertiary B. Secondary C.

Which organ synthesizes more than 90 percent of plasma proteins?

The younger layers of rock in the Grand Canyon are on top of the older layers. Which of Steno's principles best explains this?

What would most likely happen to a person who is not getting enough essential amino acids in his or her diet? The body would synthesize the amino acids. Muscle tissue would break down to supply amino acids. Protein synthesis would increase.

What is the pelagic environment

What type of fossils provide evidence of the activties of ancient organisms? a carbon filmd b petrified fossils c molds and casts d trace fossils?

Which phenomenon occurs when the Sun crosses the plane of Earth's equator

What is nonconformity in geology?

How many chromosomes would be found in sperm cells from a deer mouse

What shows the one-way movement of energy through an ecosystem? A. food chains B. food pyramids C. food webs