What is one way phytoplankton contribute positively to the ecosystem?

What two substances can increase blood cho- lesterol and why is this a concern?

What are the organelles of a plant cell

Can you tell the difference between female and male bacteria?

as a molecule travels from the outside of a cell to the inside of a cell, it will encounter three zones in the cell membrane. in order from top to bottom, the zones are

if you could use biotechnology to create a new type of microorganism that could do good in the world, what would it be?

Nucleotide are composed of phosphate group, a sugar, and a nitrogenous base. DNA is made up of long strands of nucleotide. which part if the above molecule can differ between nucleotide? A. the sugar B. the phosphate group C. the nitrogen group D.

What organ system detects stimuli, secretes chemical and electrical signals, and controls all other organs

Which tissue type allows for organ movement within the body

Explain the role of enzymes and how they affect the chemical reactions of living things

Many arthropods young do not look like adults and do not eat the same food as adults. how would this be an advantage in an environment where food is scarce