What is activation energy? How does an enzyme affect the activation energy in a chemical reaction?

Whats the order of blood flow beginning with the right atrium to the 5th digit of the right hand and back again.

When Beijerinck enriched for nitrogen fixers, he inoculated soil into two types of liquid media: one containing mineral salts and mannitol but no nitrogen source (flask A), and one containing mineral salts, mannitol, and an ammonium salt (flask B).

The evolution of the eohippus into the modern day horse is an example of

Why are cat's scared of cucumbers?

Animals can undergo lactic acid fermentation. A) true B) false

I'm confused on how to answer this. Provide an example of possible succession of insects that would be found on the body of a dead squirrel. include in your answer: Which insect is usually first to arrive on the dead body? Explain your reasoning.

How do bacteria protect their own dna from the restriction enzymes they produce?

All ions are atoms with a positive charge. negative charge. charge. neutral charge.

What is the fossil record?

When researchers are measuring plant productivity, they usually harvest and measure above-ground biomass. But with grassland plants, it is common to find that most of an individual's biomass is in its root system.