What is the most common element in a star such as the Sun?

Select one:

a. helium

b. oxygen

c. nitrogen

d. hydrogen

What type of muscle do we control voluntarily? (smooth, cardiac, striated or none of the above)

Which of the following procedures would best demonstrate cellular osmosis? A. a procedure that uses the skins of potato left overnight in oil B. a procedure that uses a banana that has been left overnight in milk C.

Which of the following is a result of meiosis? a. skin cells b. bone cells c. blood cells d. brain cells e. egg cells

You are studying an animal that alternates between sexually and asexually reproducing stages. You observe a long period of time during which your study animals reproduce sexually.

Scientist use data from Gregor Mendel's studies to conclude that information about traits is passed from parents to offspring through

List the substrate and the subunit product of amylase

What is the molecular formula of water

A secondary source might be eliminated by a good researcher because

Which of the following may create ethical issues to be discussed/debated in society? A. Allowing insurance companies to require DNA screens when people are applying for insurance. B.

When sunlight excites electrons in chlorophyll, what happens to them?