Erik notices some mold growing on cheese that he kept in his refrigerator too long. His friend David tells him that mold is a decomposer. Which of the following best describes the role of decomposers in a food web?
A) Decomposers eat other living organisms for nutrients and energy.
B) Decomposers absorb water from the ground and use it to create energy that can be used by the organism.
C) Decomposers absorb sunlight and use it to produce their own food.
D) Decomposers breakdown and absorb nutrients from decaying matter
Ans: D) Decomposers breakdown and absorb nutrients from decaying matter
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Transcriptomics is a common approach to infer which metabolic pathways are actively functioning, but which regulation process can MOST significantly complicate or even abolish conclusions from this approach?
A) activity of a catabolite repressor protein on multiple pathways B) antisense RNA silencing C) feedback inhibition with allosteric proteins D) presence of corepressors and inducers which are molecules undetected by transcriptomics
Which one of the following is a type of sensory receptor that senses changes in blood
A. chemoreceptor B. mechanoreceptor C. proprioceptor D. nociceptor
The letter “D” in the above figure represents the
a. style. b. ovary. c. stigma. d. anther. e. filament.
Which statement is true about predictions made from the theory of common descent?
A) They are almost always supported when they can be tested. B) They cannot be tested and thus we cannot know if they are correct. C) They are supported and not supported by experimental evidence with equal frequency. D) They are supported by experimental evidence for all organisms except humans.