Which of the following is the best answer for why plants require nitrogen?
A. To make chlorophyll
B. To make amino acids and nucleotides
C. To make cell walls
D. To make membranes
B. To make amino acids and nucleotides
You might also like to view...
This organism, belonging to the family Enterobacteriaceae, grows best at 25°C to 30°C. Domestic and wild rats and other animals can carry this organism. What is the medium of choice?
a. MacConkey agar b. Xylose-lysine-deoxycholate (XLD) agar c. Cefsulodin-irgasan-novobiocin (CIN) agar d. Hektoen enteric (HE) agar
After the binding of a signaling molecule to a surface receptor, the signaling molecule does not enter the cell
a. True b. False
Which of the following describes the function of the coelom?
a. housing the circulatory system of triploblasts b. digesting and storing nutrients for diploblasts c. facilitating reproduction in all animals d. developing connective tissue in most animals
Design a complete ecosystem that would sustain a number of living organisms for several years in a
sealed container. The only thing that can be added is sunlight. Explain why you have selected each organism. What will be an ideal response?