¿cual de las siguientes pistas le indicarían si una célula es procariota o eucariota? La presencia o ausencia de a) ADN b) ribosomas c) metabolismo d) endomembranas e) membrana plasmática

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated