When the cell duplicates chromosomes and separates into two separate nuclei, the cell is said to be in what phase?

a. oxygen

b. nitrogen

c. phosphorus

d. carbon

Name of specialized sex cells for humans and plants

Almost every type of cell contains this central, spherical body

Which condition in a nebula would prevent nuclear fusion? A. the presence of nitrogen and carbon B. the unification of gaseous elements C. a decrease in the overall volume of gases D. a core temperature of only ten thousand Kelvin E.

Would penicillin be expected to have an equal ability to kill both Gram-positive and Gram-negative bacteria? Why or why not?

What is the blood volume of an average-sized adult male?

During which two minute time period is the temperature of the water changing fastest?

The human body is made up of: nucleus absorption cells neurons

Why is photosynthesis important for plant cells

What challenges do you think scientists face when classifying new organisms?

What link in the chain of infection would be broken if there isn't a place for an infectious agent to thrive and reproduce?