Which of the following produces muscle tetanus? a. low levels of acetylcholine

b. high levels of creatine phosphate

c. anaerobic metabolism

d. repeated stimulations over short periods of times

e. decreased levels of calcium

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

Organisms that successfully adapt will leave to grownone of the above