In an experiment over osmosis, animal egg cells were placed into different solutions. Water was observed moving into and out of the eggs. What caused the water to move?

a
The plasma membrane used energy to move the water to equlibrium
b
The cell used selective permeability to get a drink of water
c
The different solutions created a concentration gradient and water naturally seeks equlibrium
d
The salt or sugar pushed water into the cell

Read the scenario below and answer the question that follows. hallie is reading a novel in the library when susan, her best friend, slumps down in a chair next to her. susan doesn't say anything, but hallie knows that susan is upset because she is slumping in her seat and rolling her eyes. a psychologist would explain that hallie is interpreting her friend's emotion based on a. the behavioral component of emotion b. her friend's ability to regulate emotion c. the verbal component of emotion d. the physiological component of emotion select the best answer from the choices provided a b c d

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed

Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine