Which component is affected when a catalyst is added to a chemical reaction?

o the amount of substrate

O the activation energy

O the amount of product

the concentration of reactants

Fevers are caused by: a. Fibrinogen acting on the fever tissues b. Fibrinogen acting on the hypothalamus c. Pyrogen acting on the fever tissuesd. Pyrogen acting on the hypothalamus

One of your lab partners has followed the recommended procedure of running Gram-positive and Gram-negative control organisms on her Gram stain of unknown species. Her choices of controls were E. coli and B. subtilis.

Species that colonize the newly exposed land first are called

Which best describe the connotation of the word superficial

A 40-year-old, blond, blue-eyed woman has found an irregular, brown-pigmented lesion on her shoulder. She admits enjoying the sun and outdoor activities. A biopsy shows the lesion is malignant.

What tree disease was spread to North America by a fungus carried on insects embedded on wood imported from northern Europe?

Give two abiotic factors which will affect the growth on a school playing field

What are the big four macromolecules common to living organisms, what are the subunits of each?

Match each process to the sphere at most directly involves

What are the four basic needs all living things must satisfy