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