Describe how negative feedback, positive feedback, and feedforward are similar and dissimilar when it comes to homeostatic mechanisms.
What will be an ideal response?
Negative feedback decreases the intensity of response, e.g., protects the body by lowering temperature; positive feedback increases the intensity of response, e.g., childbirth; feedforward slightly increases the intensity of response prior to an event, e.g., stress hormones prior to an exam.
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Homeotic gene products _____
a. flank a bacterial operon b. map out the overall body plan in embryos c. control the formation of specific body parts
The hormone __________ is indicated at “E.”
a. STH b. aldosterone c. oxytocin d. ADH e. none of these
Which of the following is NOT a characteristic of all animals?
A. Animals are multicellular eukaryotes. B. Animals digest their food internally. C. The adult form is diploid in an alternation of generation life cycle. D. Animals are heterotrophic by ingestion or absorption. E. Animals produce gametes by meiosis.
A community and its physical environment are often referred to as a(n) ________
Fill in the blank(s) with correct word