an element's atomic number is the A. mass of the atom B. number of the protons in an atom's nucleus C. weight of the atom D. sum of the protons and neutrons in an atom

Which carbohydrate makes up the cell wall of fungi?

Which organs perform both mechanical digestion and chemical digestion of food?

Type of asexual reproduction that occurs when cells break off and continue to grow

Scientists have genetically engineered crops such as corn, cotton, and soybeans. Which of the following statements about genetically modified crops is true? Crop yield has decreased. Crop yield has increased. Crop yield has stayed the same.

Which genetic factors determine the coloring of a hummingbird? alleles traits genotypes phenotypes

Two cats are mated. one of the parents cats is long haired (recessive allele). The litter which results contains two short haired amd three lomg haired kittens. What does the secon parent look like, and what is its genotype?

The blood in the lungs contains less oxygen and more carbon dioxide than the air. explain why oxygen moves from the air to the blood and carbon dioxide from the blood to the air

What do all plant life cycles have in common?

What Happens when a ATP loses a phosphate group

What is the primary storage form of carbohydrate in the body?