Phloem tissues transport
A. organic molecules.
B. sperm.
C. gases.
D. eggs.
A. organic molecules.
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What is the frequency of the LLT-s allele in the population?
A. 1/100 B. 1/200 C. 1/1 (only one plant has it) D. Cannot tell from the information given
What do some red algae have that actually deters many herbivores? a. They extend in elaborate branching filaments
b. They grow in dense patches. c. They incorporate calcium carbonate into their cell walls. d. They accumulate in crevices.
Which chemical carries the DNA's instructions for synthesizing a particular protein from the nucleus to the cytoplasm?
A) transfer RNA B) messenger RNA C) RNA transcriptase D) ribosomal RNA
Eukaryotic mRNA molecules may contain noncoding sequences that must be removed before translation. These are called
A. anticodons. B. noncodons. C. introns. D. exons. E. nucleosomes.