Which of the following is an intracellular factor that affects gene expression?

A.

Chemical signals from other cells

B.

Whether a cell's DNA is damaged

C.

Nutrient levels

D.

Mechanical signals from the extracellular matrix

Which of the following statements are true regarding the Bombay phenotype? Select all that apply. Individuals that are homozygous for the mutant FUT1 gene will exhibit the blood type O. Having the homozygous mutant FUT1 allele is lethal.

Why do charged molecules have difficulty crossing a phospholipid bilayer?

The cuticle and epidermis of leaves are transparent. If they weren't, what might be the result?

The earliest hominin that belonged to the same genus as modern humans was probably

From which structures do oxygen molecules move from the lungs to the blood? a. Bronchi b. Trachea c. Nose d. Bronchioles e. Alveoli Follow

Which of the following should be used to see small objects that are not visible to the naked eye? A. Metric ruler B. Balance C. Microscope D. Transfer pipette

Which carbohydrate source is found in small concentrations in tsi media, allowing the investigator to differentiate between organisms that can only ferment this monosaccharide and those that are able to ferment other available carbohydrate sources?

You are a geneticist trying to develop a sunflower with red flowers and a short stem. as you compare the sunflowers you have, what genetic variations would you look for? what kinds of plants would you select for crossing?

How are Amino acids linked to become proteins?

1. Explain what is the "Sea Floor Spread" with examples. 2. Explain "Continental Slide" with your own example. 3. How do you explain Transform Boundary after going through the "Slippin' and a Slidin' ".