[Knowledge; Easy] The covalent modification most critical to the insulin signaling pathway is:
A. phosphorylation.
B. methylation.
C. acetylation.
D. ubiquitination.
A
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Which of the following types of solutes will dissolve readily in water?
a. polar solutes b. non-polar solutes c. hydrophobic solutes d. solutes do not dissolve in water
After an RNA molecule is transcribed from a eukaryotic gene, what is removed and what is spliced together to produce an mRNA molecule with a continuous coding sequence? View Available Hint(s) After an RNA molecule is transcribed from a eukaryotic gene, what is removed and what is spliced together to produce an mRNA molecule with a continuous coding sequence?
a. promoters ... operators b. operators ... promoters c. silencers ... enhancers d. exons ... introns e. introns ... exons
Why do we have storage macromolecules, such as fats, in our bodies?
A. Macromolecules, such as fats, are a convenient way to store kinetic energy. B. We can break down these macromolecules to provide energy for the endergonic reactions in our bodies. C. Breaking down macromolecules, such as fats, is an endergonic process. D. Human cells can directly capture the energy of sunlight through photosynthesis and store it as macromolecules such as fats.
An example of an ectothermic organism that has few or no behavioral options when it comes to its ability to adjust its body temperature is a _____
A) sea star living deep in the ocean B) bass living in a farm pond C) hummingbird flying through a prairie D) honeybee in a hive on a rural farm