4. Susan can drink one glass of milk without having any symptoms, but if she

drinks two glasses, she gets painful cramps. Do you think her body produces

lactase? Explain.

Give two examples for of the following,=chemical preservation and preservatives

A factor that seems to disappear is called?

Compare the structures and functions of the biomolecules lipids and starches

Dewayne, a pianist, wants to compare sound quality. Which scenario describes how he could do this? a.) He plays two different notes on two different pianos at a different volume. b.) He plays two different notes on the same piano at the same volume.

Fungus-like protists reproduce with A. spores. B. gametes. C. plasmodia. D. sporozoite.

In multicellular organisms, cells are arranged into groups that work together to perform a common function. What are these groups called? bones joints systems tissues

What substances move freely through the shell of the egg?

Hemoglobin and enzymes are: A. lipids B. proteins C. carbohydrates D. nucleic acids

How would the introduction of a nonnative species most likely affect biodiversity in an ecosystem? a. The nonnative species would decrease biodiversity. b. The nonnative species would increase biodiversity. c.

Which gas is most abundant in earth's atomsphere