Which of the following RNA species are eukaryotic regulatory mechanisms?
A. miRNAs
B. tRNAs
C. RISC
D. siRNAs
Answer: D
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What specifically separates during anaphase of mitosis?
A. The genome B. The cytoplasm C. Sister chromatids D. Homologous chromosomes
The regulation of blood sugar levels and our stress responses are controlled in part by a negative feedback loop involving cortisol, adrenocorticotropic hormone (ACTH), and corticotropin-releasing hormone (CRH)
What would likely be the result during times of stress if cortisol receptors in the hypothalamus were nonfunctional? A) Blood sugar levels would rise to dangerous levels. B) Blood sugar levels would be unaffected. C) ACTH production would cease. D) CRH production would cease. E) Cortisol production would cease.
An abnormal passage between two organs or leading from an internal organ to the body surface is known as a:
a. fistula. b. sinus tract. c. necrotizing fascia. d. decubitus.
What features of charophytes provides evidence for charophytes being the closests relative to land plants?
A. Charophytes possess plasmodesmata. B. Charophytes are the only photosynthetic protists. C. Charophytes are fully terrestrial. D. Charophytes produce seeds and flowers.