Your school wins the homecoming football game against its biggest rival. you watch as the smallest cheerleader tries to lift up the heaviest linebacker in her excitement. as she strains against his 300-pound load and does not move him, what type of muscle contraction are her muscles experiencing?

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

Question 17 (1 point) where does penicillin come from? a. it is a chemical that man invented b. it is a fungus c. it is a toxin made by other bacteria d. it was discovered in archaebacteria