When the action potential arrives at the axon terminal it reaches a junction called the

Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?