Since hormones are present in such small amounts, how can their signals be amplified enough to regulate so many
physiological processes? What will be an ideal response?
Concepts to Consider: Through signal amplification, a single hormone-receptor complex
can activate the production of many cyclic AMP molecules. Each of these can then activate a
protein kinase, which phosphorylates many protein molecules. Thus, one hormone molecule can stimulate many proteins
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Which of the following features is most important for true mosses and ferns to reproduce in the desert?
A) that the sporophytes occupy only permanently shady, north-facing habitats B) that the sporophytes hug the ground, growing no taller than a couple of inches C) either that their gametophytes grow close together, or that they be hermaphroditic D) that the sporophytes have highly lignified vascular tissues E) that the gametophytes contain secondary compounds to deter herbivores
What is the function of the lymph nodes?
A) filer lymph B) produce lymph C) produce hormones D) mature T cells
When stored fat is used for energy, what happens to adipose cells in the body?
A) They grow larger. B) They become smaller. C) They multiply. D) They are converted into fibroblasts.
lining of the stomach, intestines, gall bladder, fallopian tubes
A. Pseudostratified columnar B. Simple columnar C. Simple cuboidal D. Simple squamous E. Stratified squamous F. Transitional