Which were the earliest oxygen-producing life-forms?

a. cyanobacteria.

b. seaweed.

c. dinosaurs.

d. ferns.

What are the types of grafting?

What are two major events that happened in the Mesozic Era

Frederick Griffith made a scientific discovery in 1928. Which best describes the knowledge about genetics before 1928

Can gram negative bacteria ferment glucose

The researcher hypothesizes that the FXR1 gene codes for a protein that binds to mRNAs that encode some of the proteins that damage arteries. Individuals with a particular mutation of the FXR1 gene tend to have high levels of these proteins.

Oxidative phosphorylation generates atp producing adp which catalyzes the phosphorylation of

How is sexual reproduction different from asexual reproduction?

Changes in the DNA sequence that affect the expression of genetic information are called A) infiltrations B) mutations C) replications D) transformations

Coral reefs in the Caribbean are sometimes damaged by hurricanes. Of the two types of coral shown, which do you think is more resistant to storm damage? Explain.

What part of the government oversees monitoring them in the environment, and what happens if a business or organization emits them at above allowable levels?