Rivers typically lack a(n) (anaerobic/littoral/limnetic) zone.
Fill in the blank(s) with the appropriate word(s).
anaerobic
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A researcher obtains the results of his RNA-seq analysis. Several transcripts are listed as being derived from the same
gene. How is this possible?
a. Alternative splicing allows for different transcripts to be created by the same gene sequence. b. The researcher’s sample was contaminated. c. Exon shuffling allows for different transcripts to be created by the same gene sequence. d. Intron shuffling allows for different transcripts to be created by the same gene sequence. e. It is not possible; there was an error in the alignment process.
If you were to penetrate through the epidermal
layer of a root, you would next encounter the a. xylem. b. endodermis. c. cortex. d. phloem. e. pericycle
Where is thyrotropin-releasing hormone (TRH) made?
A) anterior pituitary B) posterior pituitary C) follicular cells of the thyroid gland D) hypothalamus
Which of the following is true concerning homeostasis?
A) Homeostasis is the maintenance of a rigid internal environment with no variation. B) Homeostasis allows for major fluctuations in body conditions. C) The maintenance of homeostasis relies mainly on positive feedback. D) Homeostasis is the maintenance of a relatively stable internal environment.