Which of the following statements about meristems is false?
A. Meristems contain a mixture of
differentiated and undifferentiated cells.
B. Meristems consist of cells that repeatedly
undergo mitosis.
C. Meristems are found at the tips of stems.
D. Meristems are found at the tips of roots.
E. Growth only occurs at meristems and not
in other regions of the plant body.
A
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All animals are
a. multicellular, heterotrophic, and diploid. b. multicellular, heterotrophic, and haploid. c. multicellular, autotrophic, and diploid. d. multicellular, autotrophic, and haploid. e. unicellular, autotrophic, and haploid
A sequence of bases located upstream from a reference point occurs:a
towards the 3? end of the amino acid sequence. b. towards the 5? end of the mRNA sequence. c. towards the 3? end of the mRNA sequence. d. towards the 5? end of the transcribed DNA strand. e. towards the carboxyl end of the amino acid sequence.
Which of the following cerebral areas is correctly matched with its function?
a. occipital lobes?control auditory centers b. temporal lobes?control skeletal muscles c. frontal lobes?control visual centers d. parietal lobes?receive sensations of heat, touch, pressure e. substantia nigra?control learning and language
A change in one nucleotide of the DNA sequence, that results in the same amino acid being coded for is called a _____.
A) missense mutation B) silent mutation C) nonsense mutation D) frameshift mutation