An organism starts out as a single cell that makes identical copies of itself.

true or false

What is a function of the intestinal microvilli? nutrition?

Match the characteristics to the blood vessels. has a thin endothelial layer carries blood to the heart single walled largest blood vessel in diameter carries blood away from the heart exchanges nutrients with tissues artery vein capillary

Which of the following is true about a plant with the genotype AABbcc? a. It is homozygous at two loci. b. It is triploid. c. It is heterozygous at two loci. d. It will not express the recessive c allele. e. It has recessive alleles at three loci.

When the cap of an average gilled mushroom is cut off and shaken, a cloud of powdery material is released. The material released are

When looking through a microscope in which direction does the specimen move when you slide it to the left?

From what specific substance in air does most of the mass of sugar come from

What is the leading source of energy used in the United States today?

A seamount is evidence of which type of plate boundary? A. Convergent B. Divergent C. Seismic D. Transform

Water and soil pollution from oil and gas drilling is primarily what type of concern?

In the DNA chain the nitrogenous base adenine is combined with