Which of the following elements has the highest atomic mass?

Helium: 2 protons and 2 neutrons

Nitrogen: 7 protons and 7 neutrons

Oxygen: 8 protons and 8 neutrons

Hydrogen: 1 proton and no neutrons

Which statement about the cell membrane is true? 1-It contains cellulose and sugars that are involved in communication. 2-It is present in animal cells only. 3-It is rigid and elastic for supporting the cell's shape.

What happens when an atom loses an electron from its outermost shell? A. It becomes a positive ion. B. It becomes an isotope. C. It bonds with another atom. D. It becomes a negative ion.

In the Linnaean classification system, what is the largest division that a group of organisms can belong to? kingdom species class genus

1. Your unique genetic identity comes from three different events; crossing over, random alignment, and random fertilization. Explain what each of these are and how they lead to genetic diversity.

Why is a cell analogous to an engineered watch? because it consists of numerous independent subunits because it consists of numerous interdependent subunits because coded information cannot arise from random processes?

Humans are not the only animals that pollute the air.

Which is another term for the manipulated variable

A solution of sugar water is heated at a very slow rate until all of the water is gone. A crystalline solid is left in the beaker. explain what happened to the water

For fertilization to occur in humans, only one sperm is needed to weaken the barrier that surrounds the egg. a. True b. False

Which type of population growth quickly leads to overproduction of a species?