Which of the following macronutrients is acquired independently of the plant's roots?
A. calcium
B. nitrogen
C. magnesium
D. phosphorus
E. carbon
E. carbon
Biology & Microbiology
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How many electron orbitals does a carbon atom possess?
A. 2 B. 4 C. 5 D. 6 E. 12
Biology & Microbiology
Which of the following is not a polymer of numerous monomer units?
A) lipids B) proteins C) nucleic acids D) carbohydrates E) starch
Biology & Microbiology
Transcription starts at a _________ and ends at a ____________.
a. transcriptional start site; terminator b. promoter; 5' end c. promoter; terminator d. 3' end; 5' end
Biology & Microbiology
What are the four nitrogenous bases found in RNA?
a. uracil, guanine, cytosine, thymine (U, G, C, T) b. adenine, guanine, cytosine, thymine (A, G, C, T) c. adenine, uracil, guanine, cytosine (A, U, G, C) d. alanine, threonine, glycine, cysteine (A, T, G, C)
Biology & Microbiology