Which of the following has a major role in

forming cell membranes?

A fats

B. steroids

C. phospholipids

Which statement best describes the difference between a gene and an allele? A. A section of a chromosome that usually contains the code for a particular protein is an allele. A gene is one of two or more variations of an allele. B.

A 25 foot long ladder is propped against a wall at in angle of 18 with the wall how high up the wall does the ladder reach

What source of energy is ideal for prolonged, low - intensity activity

Charles Darwin's theory of evolution by natural selection explains each of the following except- A. species can become extinct B. inherited traits are passed from to offspring c. species descend from common ancestor D.

Prior to entering the Krebs Cycle, each pyruvate molecule loses electrons, hydrogen ions, and a carbon, forming an energy-rich molecule of a. Acetyl-CoA b. Citrate c. Oxaloacetate d. Malate

What effect does an increase in the average kinetic energy of an object have? A. reduced particle movement B. Lower temperature C. higher temperature D. increased mass

In beetles, the gene for color and the gene for pattern are located on the same chromosome and exhibit recombination.

At what phase of meiosis is the number of chromosomes per cell doubled? What happens after that so that the number of chromosomes per cell does not end up being higher?

Unlike endocrine glands, exocrine glands a. release hormones. b. do not usually have ducts. c. release secretions outside of the body. d. release secretions directly into the blood

How the structure of DNAallows it to serve as the basis for inheritance?