Biology, 08.10.2019 01:30, katelynbychurch
Which of the following is an example of a closed system?
a. an estuary where fresh and ocean water mix
b. a chemical reaction within deep ocean organisms allowing them to glow
c. a living single-celled organism such as a phytoplankton
d. a river that flows into the ocean
Answers: 1
Biology, 22.06.2019 02:30, usagimiller
What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.
Answers: 1
Biology, 22.06.2019 15:30, emmalou54
Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody
Answers: 1
Biology, 22.06.2019 15:30, cheerthi16
What process creates gametes? a. fertilization b. mitosis c. meiosis
Answers: 2
Which of the following is an example of a closed system?
a. an estuary where fresh and ocean...
a. an estuary where fresh and ocean...