Why would most plants produce large numbers of seeds?
a. Most seeds are not viable.
b. Most of a plants seeds are produced as food for animals that disperse the seed.
c. Most plants have many flowers.
d. Most plants only flower once
e. Few seeds survive, germinate and grow into mature individuals.
E
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Codons are ____ that encode the information for a specific amino acid in a protein
a. made of two polynucleotide strands b. ribosomal subunits c. mRNA templates that are transcribed into tRNA d. post-translational templates of tRNA e. triplets of nucleotides in mRNA
What do DNA and RNA have in common?
A. Both contain deoxyribose. B. Both are composed of nucleotides. C. Both form double helices. D. They are composed of the same nucleotides.
The common childhood illness called "hand-foot-and-mouth disease" because it causes lesions in these areas is caused by
A. an echovirus. B. a rhinovirus. C. a strain of coxsackie A virus. D. a strain of coxsackie B virus. E. the rubella virus.
During sporulation, Clostridium perfringens produces ________, which typically cause food poisoning symptoms ________ after consumption of contaminated food
a. enterotoxins / 7–15 hours b. enterotoxins / 24–36 hours c. exotoxins / 7–15 hours d. exotoxins / 24–36 hours