Genotype can always be inferred from phenotype
__________________ Indicate whether the statement is true or false.
False - sometimes
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Which of the following statements comparing endotherms and ectotherms is correct?
A) Mitochondrial density and enzyme activity are 3-4 times higher in the cells of ectotherms than in the cells of endotherms of similar size. B) Endotherms can use more of their energy intake for reproduction than ectotherms can. C) Endotherms and ectotherms have about the same mass-specific metabolic rate. D) Both endotherms and ectotherms exchange heat with the environment through convection, conduction, radiation, and evaporation.
All algae have chloroplasts.
Answer the following statement true (T) or false (F)
Which components of an atom have negative
charges? I. electrons II. protons III. neutrons a. I only b. II only c. III only d. I and II e. II and III
When examining the complete genome sequence of E. coli 0157:H7, a researcher notes that only one of two possible codons coding for lysine is observed in the genome. This is likely the result of:
a. mutational bias. b. this gene being highly expressed. c. unequal abundances of transfer RNA. d. selection against slip-stand mutations. e. All of the above.