Which layer of the eye completely surrounds the eye except for a dark, round opening called the pupil?

A. Sclera

B. Cornea

C. Retina

D. Choroid

The answer is A sclera

What are the reactants and the products in this equation? 2H2 + O2 → 2H2O

In science we define force as

Why does the reporter have a tube up his nose? a. as a feeding tube to replace lost nutrients b. to accurately measure core temperature c. to recycle the water he loses during the test d. to replace the salts and other ions lost during the test

In the non-oxidative portion of the pentose phosphate pathway, 2-carbon fragments of keto-sugars can be transferred to other sugars to generate a larger sugar molecule.

Which statement about fluid pressure is true? A. Areas of low pressure spin around regions of high pressure. B. Areas of low pressure are warmer than areas of high pressure. C. Fluids move from areas of low pressure to areas of high pressure. D.

Why must cell division be different between asexual reproduction and sexual reproduction? A. Sexual reproduction requires that the amount of DNA in a cell be halved. B.

Which of the following brings amino acids to the ribosome for use in translation? 1. rRNA 2. tRNA 3. mRNA

What is the process which cells in your body become different types of cells?

Which of the following statements shows an example of operant conditioning? A.) A chicken learns that if it pecks on a button, a food pellet will be released into its cage. B.) Pavlov taught a dog to salivate every time it heard a bell. C.

A scientist has several specimens from the same time period from several thousand years ago. Which two specimens should he study so that he can learn about the amount of rainfall at that time and the kinds of plants that grew then?