In addition to water and carbon dioxide, photosynthesis requires

A. Light and chlorophyll

B. Oxygen and sugars

C. Sugars and light

D. Chlorophyll and oxygen

Which of these is not used to describe a population? its size its migratory habits the spacing of its members its density

Why is some cholesterol necessary for animal cell membranes but high cholesterol levels are dangerous?

In some flowers there are two alleles for color, and these can both be expressed equally at the same time. Which best describes this trait? A. Dominant B. Sex-linked. C. Codominant D. Asexual

How does a circular template stop replication a. A polymerase falls off at the correct time, different polymerases last different amounts of time b. Short 23bp sequences called ter sites recognized by the Tus protein that stops replicaton c.

Which of the following is a major contributor to acid rain? A. burning fossil fuels B. using solar cells C. using windmills D. using nuclear fission

Is a nucleic acid that contains the genetic information for heredity in most organisms. A. a chromosome B. genetics C. a gene D. heredity E. DNA

Joe, a hiker, stands at the top of a hill on a trail above the ocean. Joe's friend Dave is just starting out at the trailhead, which is at the beach. Which statements about Joe and Dave are accurate? Select three options.

In what way are the structures of dna and protein similar?

Darlene is a 5′ 2′′, 23-year-old woman who weighs almost 250 pounds. to lose weight, she's tried calorie-restricted diets, fad diets, exercise programs, and appetite-suppressing pills without success.

Most people suffering from sleepwalking disorder do not have a family history of this disorder. a. True b. False