Plant cells have many barriers to protect and hold in all the all the stuff in the cytosol. What is the outermost barrier?

1. For which of the following activities might you want to hire a chemist? A. testing a sample of water from a well B. finding a comet C. examining the structure of plant cells D. building a garage 2.

How does earth compared to other celestial bodies in the universe

A person can achieve optimum daily nutrition by A. eating a variety of healthy foods. B. excluding all fat from his or her diet. C. eating large amounts of lean protein. D. drinking at least six glasses of juice

Which area would have the highest salinity? an area with plenty of runoff an area with high rates of evaporation an area with high rates of precipitation

2. Which organelle is responsible for making ribosomes?

Which group of algae is believed to be the ancestor of land plants?

A victim of a physical assault who relives the event repeatedly in his or her mind may be suffering from

What are the four weak (noncovalent) interactions that determine the conformation of a protein?

A student creates a Gram stain on a bacterial sample that has a mix of gram-negative and gram-positive organisms. The student accidentally forgets the decolorizer step. What would the outcome of the Gram stain be? a.

What are enzymes important for