How much energy must be added to a 2-kg piece of aluminum with a specific
heat of 900 J/(kg°C) to increase its temperature from 10°C to 50°C?
O
A. 1,800 J
O B. 900,000 J
O C. 108,000 J
O D. 72,000 J

What happens when a plant is losing too much water through transpiration? question 14 options: stomata open stomata close guard cells swell respiration increases

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

Why does controlling transcription affect prokaryotic gene expression?