When particles move out of a cell through facilitated diffusion, the cell

A. first gains and then uses energy

B. does not use energy

C. uses energy

D. uses energy

How many times is the diameter of a field of view decreased when you change from scanning magnification to high power magnification?

Explain how the world would be different if all waves are mechanical waves

Which of the following describes an aspect of fetal circulation that does not occur in adult circulation? Both oxygenated and deoxygenated blood use the umbilical artery. Both oxygenated and deoxygenated blood use the umbilical vein.

Summarize how movements of tectonic plates have influenced climate and life on earth

Write one question that a scientific experiment could answer.

Which of the following cells or tissues arise from lateral meristem activity? a. leaves b. secondary xylem c. tubers d. trichomes

two students are discussing natural selection in bacteria and how it can relate to antibiotic resistance in bacteria

According to the fossil record, how long did the transition from fully terrestrial to fully aquatic whales take?

Damage to which of the following structures would most likely result in an increase in mutations in a man's sperm cells A. Epididymis b. testes c. urethra d. scrotum

A college student comes to the campus health care center complaining of headache, malaise, and a sore throat that has worsened over the past 10 days. the nurse measures a temperature of 102.6° f (39.2° c.