Oxygen (O) atoms have six valence electrons and beryllium (Be) atoms have two valence electrons. Which of the following is the correct formula for a compound made of oxygen and beryllium?

Agile methods in science engineering take which of the following approaches towards creating solutions? A. Create multiple hypotheses about why a phenomenon is occurring and conduct research on all the possible outcomes. B.

What is epinephrine and what function does it have?

In pea plants, a single gene controls pea texture. Smooth (S) peas are dominant over wrinkled (s) peas. A plant with smooth peas is crossed with a plant with wrinkled peas. Of the progeny, 252 are smooth and 247 are wrinkled.

What organisms make their own food? decomposers tertiary consumers producers (also known as autotrophs) consumers (also known as heterotrophs) 9. What does a food chain always start with? a top predator a producer a herbivore a consumer 10.

What are 3 things that are used as evidence for the Theory of Evolution?

Suppose you use a microscope to look at a cell from the leaf of a tree. What structure will you see that would not be found in a cell from your fingernail? A. mitochondria B. cilia C. cell wall D. ribosomes

Name the three energy roles that organisms fill in an ecosystem.

Adrenergic postganglionic neurons release the hormones norepinephrine and epinephrine. Adrenergic postganglionic neurons release the hormones norepinephrine and epinephrine. True False

Which of the following are examples of the first specialized tissues?

Which structure of the trachea prevents it from collapsing inward and obstructing the air passageway?