Explain how glucagon raises blood glucose levels
What will be an ideal response?
Glucagon stimulates body cells to burn fat instead of glucose and liver cells to convert stored glycogen into glucose, which is released into the bloodstream.
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Bryophytes are widely distributed, but vascular plants account for most terrestrial photosynthesis. Why? (Select all correct answer options.)
A. Bryophyte photosynthesis depends on surface water. B. Vascular plants can hydrate photosynthetic cells using soil water. C. Vascular plants are larger CO2 sinks than bryophytes.
Which pattern of diploid and haploid phases reflects the life cycle in some fungi and algae, but not plants or animals?
a. alternation between haploid and diploid generations b. two haploid generations followed by a diploid generation c. one haploid generation followed by two diploid generations d. a life cycle that limits the diploid state to a single cell produced by fertilization e. a life cycle that limits the haploid state to a single cell which is immediately fertilized
What is the name for a horizontal stem system?
a. Ribosomes b. Internodes c. Nodes d. Rhizomes
What is unique about the Hepadnaviridae family of viruses?
A) They contain RNA. B) They contain double-stranded RNA. C) They contain single-stranded DNA. D) They contain double-stranded DNA. E) They contain both single-stranded DNA and double-stranded DNA.