The concepts of transcription and translation have been said to form the ‘central dogma’ of molecular biology. Is this a
fitting description? What will be an ideal response?
ANSWER: A dogma is a central tenant on which a system of understanding is based. The concepts of
transcription and translation form the core of our understanding as to how the cell uses its
genetic material to operate. While additional processes have been discovered that
complement these processes, the core correctness of transcription and translation has been
retained.
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The reason the light reactions have both cyclic and noncyclic electron pathways is
a. because the light-independent reactions require ATP and NADPH in different amounts than are generated by noncyclic electron flow. b. to ensure that ATP and NAPDH are generated in a 1:1 molar ratio. c. because only the combination of pathways can generate sufficient NADPH for the lightindependent reactions. d. to provide more electrons from water than would be released by the noncyclic pathway. e. because a single photon of light can't energize a ground state electron in photosystem II to the level necessary for transfer to photosystem I's primary electron acceptor.
What is the structure of telomeres?
A) short, repetitive DNA sequences found at the ends of linear eukaryotic chromosomes B) long, repetitive DNA sequences found at the ends of linear eukaryotic chromosomes C) short, repetitive DNA sequences found at the ends of linear prokaryotic chromosomes D) long, unique DNA sequences found at the ends of linear eukaryotic chromosomes
A decomposer is also called a saprotroph
____________________ Indicate whether the statement is true or false.
?Birds are evolved from reptiles, but also differ dramatically. Which features of birds differentiate them from most reptiles?
What will be an ideal response?