Dramatic temperature changes can induce membrane remodeling involving changing fatty acid structure in membrane phospholipids. This will occur during the transition from winter to spring and vice versa. The purpose of remodeling is to maintain a constant level of membrane fluidity in the cell. Which of the following describes the change you would see in the lipid bilayer of a bear when it comes out of hibernation ? a. The ratio of long to short fatty acid tails in membrane phospholipids decreases
b. The number of phospholipids in the membrane decreases
c. The ratio of long to short fatty acid tails in the membrane phospholipids increases
d. The number of phospholipids in the membrane increases
e. There is an increase in the saturation state of the fatty acid tails of membrane phospholipids
f. There is a decrease in the saturation state of the fatty acid tails of membrane phospholipids

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. how would the discovery of the human genome contribute to this process?