What parts of cells use up most of the oxygen? a, membranes,

b. mitochondria,

c. nuclei

Main antibody of both primary and secondary immune response. Protects mucosal barriers. Involved in allergies. Along with IgM, this is a B cell receptor. Activates complement. A. IgG B. IgE C. IgM D. IgD E. IgA

What is the best description of an organism that is fit for natural selection

Radioactive dating involves determining which of the following? Half-life decay Index fossils Depth of layers Geologic time

Gregor Mendel's research formed the basis of the field of

A gardener notices that some of her green plants are experiencing the following changes during the middle of summer - leaves turning brown - reduces leaf size why will these changes make it more difficult for the plants to grow

The Hubble Telescope: has a 1,000 foot dish is the largest radio telescope in the world can receive near-infrared and ultraviolet wavelengths all of the above

Which of these is not a component of saliva? A. lysozyme B. a cyanide compound C. defensins D. nitric oxide

Which brand of science was newly developed after the discoveries about DNA

A pea plant with round seeds (RR) is crossbred with another pea plant with wrinkled seeds (rr). What is the probability of producing offspring with genotype Rr?

A scientist is adding thermal energy to a sample of water. Using the Law of Conservation of Energy, what can you predict will happen? a.