What are chromosomes made of?
a. gametes
b. carbohydrates
c. dna
d. tetrads

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.