When a helium balloon expands and the volume doubles what happens to the density of the helium inside it?

Imagine that two test tubes are set up with 5 mls of starch in both and 500 amylase enzyme molecules added to one tube while 1,000 amylase enzyme molecules were added to the other.

What is usually the 1st step in addressing environmental problems

A scientist observed the formation of microorganisms in the chicken broth that was first heated and then put in a sealed flask. What most likely formed the microorganisms?

What evidence is there that viruses are alive?

Why does the human body heart rate increase during exercise

Which of the following statements about the field of health psychology is most accurate? a. It does not define health as being the mere absence of disease. b. It focuses exclusively on positive psychology. c.

Science Which factor is the main difference between a cell nucleus and a nucleiod? A. size of the organelle B. arrangement of the cytoskeleton C. movement of the flagella D. presence or absence of a surrounding membrane

A scientist notices that a person has two recessive genes for a trait. This describes the person's A) phenotype B) genotype C) traits D) characteristics

Which area of the brain has been associated with sadness, anxiety, and depression?

How does a genotype differ from a genotype?