2 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781264439218
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 9, Problem 2A
The ion Ca2+ can act as a second messenger because it is
a. produced by the enzyme calcium synthase.
b. normally at a high level in the cytoplasm.
c. normally at a low level in the cytoplasm.
d. stored in the cytoplasm.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Calcium ions (Ca?+) are
a typical cell at rest.
a. more concentrated in the cytosol of
b. equally distributed across the membrane of
c. more concentrated in the extracellular fluid of
which of the following cell types contain ATP- dependent K+ channels and voltage-gated Ca++ channels
a. alpha cells of the pancreas
b. fat cells
c. liver cells
d. beta cells of the pancreas
e. muscle cells
The Na/K pump in epithelium cells that line the gut is an example of ______ transport and helps __
Select one:
a.
active, prevent the movement of Cl- outside the cell
b.
active, prevent the movement of Cl- inside the cell
c.
active, prevent the movement of Na+ outside the cell
d.
passive, prevent the movement of Cl- outside the cell
e.
passive, prevent the movement of Cl- inside the cell
Chapter 9 Solutions
2 SEM ACC W/RAVEN CARDED
Ch. 9.1 - Prob. 1LOCh. 9.1 - Prob. 2LOCh. 9.2 - Prob. 1LOCh. 9.3 - Prob. 1LOCh. 9.3 - Prob. 2LOCh. 9.4 - Prob. 1LOCh. 9.4 - Describe how information crosses the membrane in...Ch. 9.4 - Prob. 3LOCh. 9.4 - Prob. 4LOCh. 9.5 - Prob. 1LO
Ch. 9.5 - Prob. 2LOCh. 9 - Paracrine signaling is characterized by ligands...Ch. 9 - Signal transduction pathways a. are necessary for...Ch. 9 - The function of a ____is to add phosphates to...Ch. 9 - Which of the following receptor types is NOT a...Ch. 9 - How does the function of an intracellular receptor...Ch. 9 - Signaling through receptor tyrosine kinases often...Ch. 9 - Prob. 7UCh. 9 - Which of the following best describes the...Ch. 9 - Prob. 1ACh. 9 - The ion Ca2+ can act as a second messenger because...Ch. 9 - Different receptors can have the same effect on a...Ch. 9 - In comparing small G proteins like Ras and GPCR...Ch. 9 - Prob. 5ACh. 9 - The receptors for steroid hormones and peptide...Ch. 9 - Describe the common features found in all examples...Ch. 9 - The sheet of cells that form the gut epithelium...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of these statements about ion movement through the plasmamembrane is true?a. Movement of Na+ out of the cell requires energy (ATP).b. When Ca2+binds to proteins in ion channels, the diffusion of Na+into the cell is inhibited.c. Specific ion channels regulate the diffusion of Na+ through theplasma membrane.d. All of these are truearrow_forwardWhich of the following statements about "leak channels" in the plasma mem- brane is correct? A. Proteins that form these channels bind to solutes to allow them to pass into the cell. B. They are passageways formed by proteins to allow water and ions to move passively through the membrane. C. They allow small ions and molecules to move between adjacent cells. D. They are formed by glycoprotein and proteoglycans to allow hormones to enter cells.arrow_forwardMolecule X binds to a receptor that works as an ion channel. Which of the following must betrue of this receptor?A. It allows passage of only one type of ion.B. It is found in the cytosol of the cell.C. It is voltage dependent.D. It is slow to produce a response in the cell.arrow_forward
- Which of the following does NOT generally lead to a phosphate cascade? A. active transport pumps B. ligand-gated ion channels C. receptor tyrosine kinases D. G protein-coupled receptorsarrow_forwardThe resting membrane potential of a cell is the consequence of which of the following concentrations of ions? A. High K* and Cl- outside the cell and high Na* and large anions inside the cell. B. High K* and Na* outside the cell and high Cl- and large anions inside the cell. C. High Cl- and Nat outside the cell and high K* and large cations inside the cell. D. High Ca2+ and Nat outside the cell and high K* and large cations inside the cell.arrow_forwardCalcium ion concentrations are tightly regulated because of the importance of calcium in biological functions. Calcium ion concentrations are ____ inside the cell than/as they are outside the cell. a. slightly higher b. the same c. slightly lower d. much higher e. much lowerarrow_forward
- GABA receptors play an essential role in neurotransmission in the central nervous system. In response to the appropriate signal, these receptors open up and allow CI (chloride ions) to flow into the cell. Given this information, GABA receptors can be classified as a A. gated ion channel B. carrier protein O C. symporter D. enzymearrow_forwardchoose one: a. Steroids are hormones processed by their target cells at the plasma membrane b. Steroids are hormones which are able to be dissolved in water c. Steroids are made from cholesterol a type of fat d. Steroids do not use nuclear receptorsarrow_forwardOne is true about smooth endoplasmic reticulum A. It lacks ribosomes B. It is site of Ca2+ sequestration C. It is involved in detoxification of organic molecules D. It is th site of steroid hormone synthesizes E. It is the site of protein synthesisarrow_forward
- A mutation where Protein kinase A and Ca2+/calmodulin kinase 2 is inhibited a. Increased Cytosolic Calcium b. Decreased Cytosolic Calcium c. No change in Cytosolic Calcium d. Slow progressive decrease in cytosolic calciumarrow_forwardThe energy source for movements of Na* and K* during an action potential is a. the Na*/K* ATPase b. the thermal energy in the cell membrane c. the concentration gradients for the ions d. determined by the lipids of the cell membrane e. the negative charge of the extracellular fluid relative to the cytosolarrow_forwardThe function of cholesterol in a cell membrane is to A.maintain structure because of its flat rigid characteristics. B.take part in the reactions that produce bile acids. C.attract hydrophobic molecules to form solid deposits. D.act as a precursor to steroid hormones. E.none of the abovearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
What is Metabolism?; Author: Stated Clearly;https://www.youtube.com/watch?v=nRq6N5NGD1U;License: Standard youtube license