In an experiment, the condition that is manipulated by a scientist is the

12) DNA and RNA differ in all BUT one of the following ways. A) DNA is double-stranded, while RNA is single stranded. B) RNA uses the sugar ribose in its backbone, while DNA uses deoxyribose.

Professor Binkie has been studying how playing video games affects a student's performance on the SAT. Using 5,000 students, the Professor is monitoring the amount of time they play the video games and how they score on the test.

Galactosemia is a recessive human disease that is treatable by diet. susan smithers and her husband are both heterozygous for the galactosemia gene.

Which group in this food web would most likely have the greatest biomass?

What is the first step of the scientific method? Research the problem Make an observation Design and experiment Formulate a hypothesis

Your patient has been diagnosed with right ventricular failure. Which of the following abnormalities is not a direct result of this problem Your patient has been diagnosed with right ventricular failure.

Which of the following is an example of sensors working during homeostasis? a blood volume decreasing from lack of water b the pancreas failing to release insulin c acidic blood pH disrupting cell metabolism d energy demands triggering a release of

If two organisms evolve in response to each other which evolutionary pattern is demonstrated

If there is a possibility of four different genotypes in the offspring that result from a dominant-recessive inheritance, and if the couple has four children, would they definitely have children with one expressing each genotype?

The ovaries are located in the ___ cavity.