The diffusion of oxygen gas across the cell membrane always occurs -
a with the assistance of cellular energy in the form of atp
b along the concentration gradient of the oxygen gas
c from an area of lower concentration to an area of higher concentration
d at the same rate as the diffusion of carbon dioxide gas

Match the digestive enzymes to the macromolecules they to digest. break down fats into glycerol and fatty acids break down carbohydrates into simple sugars break down nucleic acids into nitrogenous bases and simple sugars break down proteins into amino acids

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.

The eyeball is wrapped in adipose tissue within the orbit. what is the function of the adipose tissue?