Question 7 Leptin concentration in the blood stream is proportional to the mass of adipose tissue. Assuming sufficient adipose mass, leptin binding to AgRP neurons in the hypothalamus has what effect? OA. Appetite suppression OB. Inhibition of insulin release OC. Increased adipocyte apoptosis O D. Depression of involuntary energy out O E. Activation of POMC neurons

Q: Which enzyme catalyzes the conversion of Cholesteryl ester to cholesterol and fatty acid? O…

A: Cholesteryl ester, a dietary lipid, is an ester of cholesterol. The ester bond is formed between the…

Q: QUESTION 56 PDGF 100 740 751 L.. PI3K 50 GAP O GAP 771 protein P-site PTP O 4 1009 O PTP PI3K 740,…

A: Genes store genetic information in the form of DNA, which may be converted into functional proteins…

Q: A benefit of second messengers is that O they decrease the effect of negative hormones. O they…

A: The exposure to extracellular signalling molecules to the cell leads to release of intracellular…

Q: estion 18. ß-actin protein belongs to the protein group named actins. Actin prote participate in…

A: Actin is a protein that is found in all eukaryotic cells, including human cells. It is a key…

Q: Question 13 Lantus differs from "normal" insulin in that: Select one: O a. The usual insulin…

A: Insulin is a hormone that our body synthesizes in order to keep our blood glucose levels within the…

Q: Which effect is a response to glucagon secretion? OA. Inhibition of skeletal muscle VLDL transport…

A: Glucagon is a peptide hormone. It is secreted by the pancreatic cells in response to low levels of…

Q: QUESTION 3 The Cori cycle represents a metabolic link between glycolysis and gluconeogenesis. O True…

A: Introduction  Glycolysis is a metabolic pathway that takes place in the cytoplasm of cells and…

Q: What is the direct result of membrane depolarization in the release of insulin from pancreatic islet…

A: The correct answer is option A. Increased intracellular Ca2+.

Q: Which of the following is a property of signaling for epinephrine, growth hormone, GIP and…

A: Cell communication in biology is referred to as cell signaling which is the ability of a cell to…

Q: Roughly of the circulating thyroid hormone in the blood stream is T3, even though 90% of what is…

A: The thyroid hormone has a significant role in controlling metabolism, growth and other functions of…

Q: Question 10 What is the effect of insulin on protein, carbohydrate, and lipid metabolism? OA.…

A: Insulin is a hormone produced by the pancreas & plays a crucial role in regulating metabolism in…

Q: Question 29 What property or symptom is common in Type 2 diabetes, but rare or unknown in Type 1…

A: Diabetes is a disease that occurs when blood sugar (blood glucose) is very high. Glucose is the main…

Q: Homeostasis can be defined as a: CA Constancy of the internal environment that results from…

A: All the living organisms stand to maintain a constant internal environment irrespective of the…

Q: QUESTION 42 What is the target tissue for calcitonin and how does it respond to the binding of this…

A: Since you have asked multiple questions, we will answer only the first question. If you want any…

Q: QUESTION 7 Which of the following hormones would react through a secondary messenger system? OA.…

A: The objective of the question is to identify which among the given hormones would react through a…

Q: Question 16 Which best describes why cachexia is a common manifestation of cancer? There is…

A: Cachexia is the condition in which the severe weight loss of  individual

Q: Question 28 Receptors for which of the following hormones activate AKT kinase as part of their…

A: AKT kinase, also known as protein kinase B (PKB), is a serine/threonine kinase that plays a central…

Q: Question 34 The figure shows a graph of the plasma levels of a 'mystery hormone' (in ng/mL) for 50…

A: The graph in question illustrates the relationship between plasma levels of a mystery hormone (in…

Q: Question 12 Identify the key step in regulation of protein hormone release. OA. Exocytosis OB.…

A: Protein regulation refers to the mechanisms by which the activity, synthesis, degradation, or…

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.