Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 37, Problem 6RQ
Why are steroids able to diffuse across the plasma membrane?
- Their transport protein moves them through the membrane
- They are amphipathic, allowing them to interact with the entire phospholipid
- Cells express channels that let hormones flow down their concentration gradient into the cells
- They are non-polar molecules.
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When a cell secretes a growth factor that binds to receptors on neighboring cells of different type causing them to
proliferate this is an example of
endocrine signaling
O autocrine signaling
O direct intercellular signaling
O paracrine signaling
O contact-dependent signaling
N
Signal
Sequence
The schematic above depicts a protein with the indicated signaling sequences along
its length. Based on these signaling sequences what type of protein is this?
N-X-S/T
there is not enough information to determine
A secreted peptide hormone
A lysosomal hydrolase
A glycoprotein
Steroid hormones influence cell functions via
nonspecific cellular receptors
secondary messengers
nongenomic signalling
direct gene transcription
Chapter 37 Solutions
Biology 2e
Ch. 37 - Figure 37.5 Heat shock proteins (HSP) are so named...Ch. 37 - Figure 37.11 Pancreatic tumors may cause excess...Ch. 37 - Figure 37.14 Hyperthyroidism is a condition in...Ch. 37 - A newly discovered hormone contains four amino...Ch. 37 - Which class of hormones can diffuse through plasma...Ch. 37 - Why are steroids able to diffuse across the plasma...Ch. 37 - A new antagonist molecule has been discovered that...Ch. 37 - What effect will a cAMP inhibitor have on a...Ch. 37 - When insulin binds to its receptor, the complex is...Ch. 37 - Drinking alcoholic beverages causes an increase in...
Ch. 37 - FSH and LH release from the anterior pituitary is...Ch. 37 - What hormone is produced by beta cells of the...Ch. 37 - When blood calcium levels are low, PTH stimulates:...Ch. 37 - How would mutations that completely ablate the...Ch. 37 - A rise in blood glucose levels triggers release of...Ch. 37 - Which mechanism of hormonal stimulation would be...Ch. 37 - A scientist hypothesizes that the pancreas’s...Ch. 37 - Which endocrine glands are associated with the...Ch. 37 - Which of the following hormones is not produced by...Ch. 37 - Recent studies suggest that blue light exposure...Ch. 37 - Although there are many different hormones in the...Ch. 37 - Where is insulin stored, and why would it be...Ch. 37 - Glucagon is the peptide hormone that signals for...Ch. 37 - Name two important functions of hormone receptors.Ch. 37 - How can hormones mediate changes?Ch. 37 - Why is cAMP-mediated signal amplification not...Ch. 37 - Name and describe a function of one hormone...Ch. 37 - Describe one direct action of growth hormone (GH).Ch. 37 - Researchers have recently demonstrated that...Ch. 37 - How is hormone production and release primarily...Ch. 37 - Compare and contrast hormonal and humoral stimuli.Ch. 37 - Oral contraceptive pills work by delivering...Ch. 37 - What does aldosterone regulate, and how is it...Ch. 37 - The adrenal medulla contains two types of...Ch. 37 - How would damage to the posterior pituitary gland...
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- Some cancer cells release their own grown hormone rather than relying on growth hor- mones from elsewhere in the host organism. Which of the following describes the type of cell communication used by these cancer cells to promote their continued division? A juxtacrine signaling B с D endocrine signaling paracrine signaling autocrine signalingarrow_forwardWhat statement about lipid-soluble signaling is FALSE. These signals often alter gene expression in the cell Requires a transporter to enter the cell Rapidly initiates long-lasting change Steroids are an example of lipid-soluble ligands O Lipid-soluble signals bind to intracellular receptorsarrow_forwardDescribe to me why certain hormones (lipids-based hormones) can move directly through the cell membrane in comparison to hormones (protein-based hormones) have to bind to the outside of the cell and then send secondary messengering inside in order to work? Which hormones are in each of the 2 categories? How does this affect the way we deliver/treat hormone conditions?arrow_forward
- which of the following molecules is NOT involved in cell-to-cell signaling? prostaglandins eicosanoids hormones cholesterolarrow_forwardhow should think about this process ? Thyroid hormones generate a response in their target cell by Group of answer choices binding to its surface receptors. by binding to an intracellular receptor and promoting gene expression by binding to a ligand-gated receptor by binding to a tyrosine kinase receptor.arrow_forwardSteroid hormones act as transcription factors O typically act over seconds to minutes O also include the catecholamine-type hormones O are most important to energy mobilization from stores Owork through transmembrane protein receptorsarrow_forward
- A hormone that must generate secondary messenger for its action is the one that Maintains and supports pregnancy Is the main mineralocorticoid of the body Maintains basal metabolic rate of body Stimulates the secretion of androgens from testesarrow_forwardChoose the item in column 2 that best matches each item in column 1. necessary for the activation of heterotrimeric G-proteins primary signal that activates platelets pertussis toxin adenylate cyclase hormones acting over long distances…arrow_forwardWhich of the following is the best example of negative feedback for a steroid hormone? plasma membrane receptor activating a G protein plasma membrane receptor that activates the MAP Kinase pathway nuclear hormone receptor activating transcription of enzymes that synthesize the hormone nuclear receptor inhibiting its own transcriptionarrow_forward
- Cell signaling involves only one molecule, the receptor. True Falsearrow_forwardMutations in which of the following would MOST DIRECTLY affect the cAMP signaling pathway? Adenylyl cyclase PKA IP3 Ligand-gated ion channelarrow_forwardArrange signalling cascade events in chronological order. Release of Ca2+ ions triggered by IP3 release Dissociation of GTP from alpha-subunit in G proteins Sweet molecules binds to G-protein coupled receptors. Activation of phospholipase Carrow_forward
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