Hair is produced at the base of hair follicles from columns of cells that die when they are filled with keratin.

True or false?

Which of the following is not made up of keratin?

a.

fingernails

c.

sweat glands

b.

hair

d.

epidermis

The drug Viagra® counteracts the effects of NO on penile blood vessels. a. True b. False

List the types of blood vessels from smallest to largest

All living things are made of two or more cells

Describe the importance of biomes such as forests, freshwater, and marine biomes? How have human actions affected these biomes? (Site 1)

Read the excerpt from Midnight Assassin. Hossack and his wife, Margaret, had nine children, including five, ranging in age from thirteen to twenty-six, who were in the house at the time of the assault. Which best describes the excerpt? A.

What is the name for a large region with consistent organisms and weather?

The majority of mining in the U. S is subsurface mining. True or false

Individuals with androgen insensitivity syndrome also have chromosomally abnormalities. a. True b. False

A Cyclops that is resistant to pesticides and has smooth antennae is crossed with one that is heterozygous for both traits. Show the genotypes of the parents.

Why don't car buyers always choose fuel-efficient vehicles, and how can government regulations encourage them to do so?