BIO 101 FINAL- STRAIGHTER-LINE EXAM/ BIO 101 STRAIGHTERLINE FINAL EXAM/ RECENT UPDATE QUESTIONS AND CORRECT ANSWERS/ ALREADY GRADED A+

Which intercellular junction allows for the rapid movement of small molecules or ions to flow from one animal cell to the next? a. gap junctions b. tight junctions c. adhesion junctions d. desmosomes e. plasmodesmata > ANSWER: gap junctions When a lysosome fuses with a vacuole, a. they both disappear. b. they both return to the Golgi apparatus. c. protein synthesis begins. d. division begins. e. its contents are digested. > ANSWER: its contents are digested According to cell theory a. all organisms are composed of tissues. b. the smallest unit of life is a nucleus. c. animals but not plants are composed of cells. d. a multicellular organism is composed of many cells. e. new cells arise only from preexisting cells. > ANSWER: new cells arise only from preexisting cells. Since all organisms carry on cellular respiration, all living cells must contain mitochondria. True False > ANSWER: False