The C4 photosynthetic cycle is more efficient than the C3 cycle when the ________
a. climate is hot and dry
b. soil is deficient in nitrogen
c. climate is cool and damp
d. plant is growing at a high altitude
a
You might also like to view...
The eyes of newborns are treated with antibiotics to protect from infection with
a. Streptococcus pyogenes. b. Neisseria gonorrhea. c. Staphylococcus aureus. d. Chlamydia trachomatis. e. b and d
Over the past 400 years, humans have documented the extinction of more than ________ species. This modern rate of species extinction is estimated to be ________ the normal extinction rate seen in the fossil record
A) 100; about the same as B) 400; about double C) 1,000; over 100 times greater than D) 10,000; at least 1 million times greater than
Stage 2 of photosynthesis, sometimes referred to as the dark reactions, involves the reduction of CO2 to produce organic compounds such as sucrose. What cofactor is the electron donor for carbon fixation?
(a) H2O (b) NADH (c) FADH2 (d) NADPH
An organism that is n=4 inherits how many individual chromosomes from each parent?
a. 2 b. 6 c. 8 d. 16 e. none of these