Which element provides strength to the exoskeletons of clams and oysters? sulfur oxygen hydrogen phosphorus

Name the blood vessels that carry blood from the upper and lower parts of the body

Imagine you wanted to use a human genomic DNA library to clone the human gene for insulin. You will be using the rat insulin gene sequence as your DNA probe. In what order would you perform the following steps to accomplish this goal?

People that are lactose their body does not produce enough of the enzyme lactase 1) True 2) False

How do prokaryotic cells differ from eukaryotic cells? a. unlike eukaryotic cells, prokaryotic cells do not have any membrane-bound organelles. b. unlike eukaryotic cells, prokaryotic cells do not have any chromosomes. c.

Without extensive medical intervention (high tech equipment in modern hospitals) it is unusual for human babies weighing under 3 pounds or over 13 pounds to be born alive and survive (along with their mothers). This is an example of? a.

How do tectonic plates move at transform plate boundaries? slide horizontally past each other move apart from each other compress each other by moving toward each other

A confounding variable is another variable, other than the independent variable, that may have an effect upon your experiment's results.

Which of the following codes for a specific protein? Question 1 options: DNA gene enzyme chromosome

Any problem of inquiry can be proved or disproved using the scientific method. True False

What was the first living cells to evolve on earth?