To signal a stronger stimulus, action potentials within a neuron?
A. Get bigger
B. Travel more quickly
C. Last Longer
D. Are generated More frequently
Ans: D. Are generated More frequently
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A signal sequence
A) directs RNA nucleotides to a particular gene. B) attracts tRNAs to an mRNA. C) is the first part of a protein's amino acid sequence that helps to direct it to a certain part of the cell. D) is a coding codon that mutates into a stop codon.
Pairs of duplicated chromosomes produced during S phase are called ______
a. homologous chromosomes b. sister chromosomes c. sister chromatids d. heterologous chromosomes e. homogeneous chromosomes
In an ecosystem, the amount of organic matter produced in a given time that is available for heterotrophs is known as
A. daily yield. B. gross primary productivity. C. net primary productivity. D. effective vitality. E. net yield.
Nucleic acids are polymers made up of which of the following monomers?
A) nucleotides B) sugars C) amino acids D) nitrogenous bases