A nucleotide of DNA may contain adenine, guanine, cytosine, or thymine. What is each of these components?

A. 5-carbon sugar

B. nitrogenous base

C. phosphate group

D. nucleic acid

What are exocrine glands

Wendy is a paleontologist and finds a fossil of a bony fish buried in the sediment on the coast. After observing and recording several key features of the fossil as well as the area, what conclusion might she be able to make?

How are the fission and great-impact hypothesis of lunar formation similar?

What are the four main biological macromolecules and what are their components and functions?

Describe one mutualistic symbiotic relationship and one parasitic relationship involving protists.

When reproduction is achieved through meiosis and subsequent fertilization it is called?

Which statement is correct? A. Both plants and fungi undergo photosynthesis. B. Both protists and fungi are eukaryotic. C. Like some prokaryotes, fungi are autotrophic. D. Both animals and fungi lack cell walls.

In an ecosystem, bees are responsible for the pollination of flowers. Over time, the number of bees in the population have increased. Which of these best explains why the number of flowers in the population have also increased?

What is a likely consequence of continued human population growth?

Why is an organisms role important for its community?