For calcium, evaluate how intracellular levels of calcium are maintained and how calcium is utilized in...
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The intracellular calcium level is kept relatively low with respect to the extracellular fluid, by an approximate magnitude of 12,000-fold. This gradient is maintained through various plasma membrane calcium pumps that utilize ATP for energy, as well as a sizable storage within intracellular compartments.
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calcium, evaluate how intracellular levels of calcium are
maintained and how calcium is utilized in...
41. Which of the following statement is/are true about calcium? A. Intracellular calcium levels are about...
41. Which of the following statement is/are true about calcium? A. Intracellular calcium levels are about 10X less than extracellular calcium levels. B. Calcium binds to calmodulin, and together they activate a variety of proteins, including myosin light chain kinase. C. Calcium acting in conjuction with diacylglycerol activates protein kinase A D. All of the above are true. E. None of the above is true.
With the aid of diagrams, describe the mechanisms that the cell uses to control intracellular calcium...
With the aid of diagrams, describe the mechanisms that the cell uses to control intracellular calcium levels. Name two drugs that affect these processes, indicating their mechanism of action and effect on calcium levels. Pharmacology
increase intracellular [calcium], how does it affect AMPA receptors? ( we know NMDA promote calcium influx)
increase intracellular [calcium], how does it affect AMPA receptors? ( we know NMDA promote calcium influx)
1. Ischemia and other toxic injuries increase the accumulation of intracellular calcium as a result of:...
1. Ischemia and other toxic injuries increase the accumulation of intracellular calcium as a result of: A) B) C) D) release of stored calcium from the mitochondria. improved intracellular volume regulation. decreased influx across the cell membrane. attraction of calcium to fatty infiltrates. 2. The patient is found to have liver disease, resulting in the removal of a lobe of his liver. of the remaining liver Adaptation to the reduced size of the liver leads to cells. A) metaplasia B)...
In pregnant females, if dietary calcium intake is very low, how is calcium homeostasis maintained? Phosphorus...
In pregnant females, if dietary calcium intake is very low, how is calcium homeostasis maintained? Phosphorus concentration increases to compensate for lack of calcium Calcium is mobilized from the mother’s skeleton Increased vitamin D3 production Increased vitamin E production What is a potential consequence of embryonic exposure to endocrine-disrupting compounds that can bind to estrogen receptors? Increased growth rate and early birth Decrease in size of developing testes Increased rate of ovulation Decreased sperm count B and D Which of...
Part A Drag the labels onto the diagram to identify the different influences on blood calcium...
Part A Drag the labels onto the diagram to identify the different influences on blood calcium levels. CALCIUM BALANCE IN THE BODY al To maintain calciun balance, dietary intake should equal Ca2 loss in the urine and feces Small intestine Ca2+ Dietary Calcium in feces PTH, Calcitricl, Cortisol ?Some calcium is secreted into the small intestine. Extracellular matrix of bone and teeth ECF1Passive Bone Ca 25 mM Ca+in kidney tubules Calcitonin Extracellular matrix gradient transport Muscle contraction [free Ca 0001...
Mycobacterium tuberculosis is an intracellular pathogen that grows within macrophages. Explain how the defense against this...
Mycobacterium tuberculosis is an intracellular pathogen that grows within macrophages. Explain how the defense against this pathogen will be organized and what type of cells will be activated to fight the infection. Please include in your answer which MHC will be involved and what will follow after that (meaning what type of T cells will be engaged in the process)
The molar concentrations of bicarbonate to carbonic acid in the blood is maintained at an approximate 20:1 ratio under normal physiological conditions. Explain how this enables the body to resist...
The molar concentrations of bicarbonate to carbonic acid in the blood is maintained at an approximate 20:1 ratio under normal physiological conditions. Explain how this enables the body to resist changes to blood pH. (100 words)
The molar concentrations of bicarbonate to carbonic acid in the blood is maintained at an approximate 20:1 ratio under normal physiological conditions. Explain how this enables the body to resist changes to blood pH. (100 words)
Calcium-47, used to evaluate bone metabolism, has a half-life of 4.5 days. How many milligrams of...
Calcium-47, used to evaluate bone metabolism, has a half-life of 4.5 days. How many milligrams of a 49-mg sample of calcium-47 remain after 54 days? Express your answer using two significant figures. mg
Scientists are testing substance Lto determine how it enters mammalian cells in a culture
Unit 2 FRQ AP Bio Read each question carefully. Write your response in the space provided for each part of each question. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable and will not be scored. Scientists are testing substance Lto determine how it enters mammalian cells in a culture. The cells maintain a 120 millimolar (MM) intracellular concentration of substance L. The scientists determined the rate of entry of substance Linto the cells...
41. Which of the following statement is/are true about calcium? A. Intracellular calcium levels are about 10X less than extracellular calcium levels. B. Calcium binds to calmodulin, and together they activate a variety of proteins, including myosin light chain kinase. C. Calcium acting in conjuction with diacylglycerol activates protein kinase A D. All of the above are true. E. None of the above is true.
1. Ischemia and other toxic injuries increase the accumulation of intracellular calcium as a result of: A) B) C) D) release of stored calcium from the mitochondria. improved intracellular volume regulation. decreased influx across the cell membrane. attraction of calcium to fatty infiltrates. 2. The patient is found to have liver disease, resulting in the removal of a lobe of his liver. of the remaining liver Adaptation to the reduced size of the liver leads to cells. A) metaplasia B)...
Part A Drag the labels onto the diagram to identify the different influences on blood calcium levels. CALCIUM BALANCE IN THE BODY al To maintain calciun balance, dietary intake should equal Ca2 loss in the urine and feces Small intestine Ca2+ Dietary Calcium in feces PTH, Calcitricl, Cortisol ?Some calcium is secreted into the small intestine. Extracellular matrix of bone and teeth ECF1Passive Bone Ca 25 mM Ca+in kidney tubules Calcitonin Extracellular matrix gradient transport Muscle contraction [free Ca 0001...
The molar concentrations of bicarbonate to carbonic acid in the blood is maintained at an approximate 20:1 ratio under normal physiological conditions. Explain how this enables the body to resist changes to blood pH. (100 words)
The molar concentrations of bicarbonate to carbonic acid in the blood is maintained at an approximate 20:1 ratio under normal physiological conditions. Explain how this enables the body to resist changes to blood pH. (100 words)
Calcium-47, used to evaluate bone metabolism, has a half-life of 4.5 days. How many milligrams of a 49-mg sample of calcium-47 remain after 54 days? Express your answer using two significant figures. mg
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