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

Why do athletes often eat lots of carbohydrates the day before a competition?

Which type of reproduction, sexual or asexual, is best suited for organisms that live in a place where environmental conditions are stable

What are the characteristics of Archaebacteria? A) They are single cells that have a nucleus and tend to live in moderate conditions. B) They are single cells that lack a nucleus and tend to live in extreme conditions.

Which type of research method attempts to answer the question, "Why are they doing that?" (Site 1)

This female patient with terminal carcinoma of the breast, metastatic to the liver, brain, and intrahepatic and extrahepatic bile ducts, was admitted with dehydration. patient dehydrated with ivs and discharged, with no treatment given to the cancer.

ALSUM genes d. sex chromosomes 47. Down syndrome is characterized by having an extra copy of at least a portion of chromosome 21. Which of following methods would quickly identify the disorder? a. Pedigree chart c. meiosis map b. Karyotype d.

For what percentage of time has life existed on earth round to the nearest whole number

What does this similarity at the molecular level in yeast and humans most likely indicate

Which of these activities is not considered to be a marine ecosystem threat? overfishing. ocean pollution. coastal development. ocean alkalinity?

What is another common intramuscular injection site for 2mL or less of a drug? a Ventrogluteal b. Vastus Lateralis c Deltoid d Infraspinatus