What technological advancement was necessary before scientists could begin to observe cells? invention of the magnifying glass invention of the microscope invention of the telescope invention of the thermometer

A red blood cell placed in distilled water will swell and burst due to the movement of Your answer: salt from the distilled water diffusing into the cell water molecules moving by osmosis into the cell water from the red blood cell moving into the

During a knee-jrk reflex the nerve impulse is received by the A. thalamus. B. brain. C. spinal cord. D. spinal cord then the brain.

10. What happens to atmospheric pressure as a person rises in altitude? O A. It decreases O B. It's unaffected by changes in altitude, O C. It increases OD. It changes based on the time of year. L ad on the review nane)

A scientist discovered a specimen no one has ever seen before and believes it is living. He tested the specimen to determine if it is respiring, but the results were inconclusive.

Oils produced by your skin fall under which category of macromolecules? a. nucleic acids b. proteins c. carbohydrates d. lipids

What would happen to the mass of a cell in a hypertonic, isotonic and hypotonic?

How do air and water movement, and land masses affect the climate

Under what circumstances does membrane transport always require energy?

What is one disadvantage of using plasma gasification to detoxify hazardous waste?

Euglena use which structure for movement? A. cilia B. flagella C. pseudopods D. they do not move