Both the consumption of alcohol and the ingestion of antianxiety drugs work to increase the activity of which is an inhibitory neurotransmitter.

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

What are two reasons for why a species might disappear from the fossil record?

Select the correct answer from each drop-down menu proteins are