in gel electrophoresis, DNA fragments move across a gel. describe what cause them to move in (2-3) sentences

A distention of the renal pelvis due to urine collecting in the kidney is

What water property allows bugs to walk on water

Wax melts when it is heated. Which most likely describes what is true of the result of this reaction?

A mutation that does not change a gene can affect an organism because it can alter: a. RNA b. Gametes c. switches d. proteins e. evolution

In which of the following structures would you expect to see afferent ganglia? a. Neuromuscular junction b. Glossopharyngeal nerve c. Spinal cord d. Adrenal gland

Which group of microorganisms is most likely to spoil a freshwater trout preserved with salt? A) Psychrophiles B) Facultative halophiles C) Anaerobes D) Thermophiles E) Hyperthermophiles

What is unique about dogs?

3. The best thing you can do to keep a positive relationship with your supervisor is to

What contains both communities and ecosystems?

Which of the following represents a way that animals in a zoo are influenced by their environment? a. increased natural instincts b. decreased aggression c. unnatural behavior d. increased appetite