7) This statement is false.
Explanation:
As one kinase molecule act on many proteins and amplify many target
proteins.
The kinases are activated by phosphorylation that initiate many
signaling cascades. Thus it is responsible for phosphorylation that
activates a cascade of different amino acids.
8) Answer is: phosphatases
Explanation:
Dephosphorylation, or removal of a phosphate group, is accomplished
with the help of phosphatases. The kinases are activated by
phosphorylation that initiate many signaling cascades.
9) Answer is: all of them, DAG, cAMP, calcium.
Explanation:
Second messengers are intracellular signaling molecules which are
released by the cell when extracellular signaling molecules whuch
are called as first messengers acts.
Examples of second messenger molecules are cyclic AMP(cAMP), cyclic
GMP, inositol trisphosphate, diacylglycerol( DAG), and
calcium.
10) This statement is true.
Explanation:
Signal transduction cascades amplify the signalz that producing
multiple signals for every single receptor. If signaling pathway
amplified several times then it results in a signaling
cascade.
help with 7-10 Question 7 1 pts Phosphorylation of kinases in one location can result in activation, while phosphor...
6. Lipid-soluble signaling molecules, such as testosterone, cross the plasma membranes of all cells A) by diffusion but affect only target cells because only target cells retain the appropriate DNA segments. B) by diffusion but affect only target cells because only target cells have the intracellular receptors for testosterone. C) through hydrophilic channels of transmembrane proteins but affect only target cells because only target cells retain the appropriate DNA segments. D) through hydrophilic channels of transmembrane proteins but affect only...
QUESTION 1 When cells stimulate other cells at long distances, it is referred to as: paracrine loops autocrine loops synaptic signaling endocrine signaling 1 points QUESTION 2 What region of a protein binds phosphorylated serines & tyrosines on another protein? SH2 domain ligand cAMP receptor monomers 1 points QUESTION 3 Activation of a serpentine receptor can lead to: cAMP generation GTP-binding of G proteins activation of Protein Kinase A all of the above 1 points QUESTION 4...
Question 13 0.5 pts Protein phosphorylation is catalyzed by? Protein kinase Protein Phosphatase Antibodies Antigens None of the above Question 14 0.5 pts In an aqueous solution, which amino acid will orient itself inside the center of the protein? Valine Aspartic Acid Arginine Serine Glutamine Question 15 0.5 pts Enzymes in the enzyme class "kinase": Break down nucleic acids by hydrolying bonds between nucleotides O Catalyze the addition of phosphate groups to molecules Break down proteins by hydrolyzing peptide bonds...
QUESTION 1 AGº for the hydrolysis of ATP is considered to be: O highly endergonic O highly exergonic O slightly endergonic O slightly exergonic QUESTION 2 Which of the following most closely approximates a second messenger? An odorant receptor on the surface of a mouse olfactory epithelium cell that undergoes a o conformational change upon binding of metabolites (breakdown products) of thyroid hormones, activating an intracellular G-protein. Ca=ions flowing into the cytoplasm and there binding to a protein on the...
I'd like to ask the answers for all of the uestions Question 1. A reaction in an anabolic pathway in a cell has a AG of +2.5 kcal/mol. Which of the following is true regarding this reaction? A. It will occur spontaneously. B. The product of the reaction has a lower free energy than the reactants. C. It can occur if it is coupled to ATP hydrolysis. D. It is an exergonic reaction. E. It is breaking a polymer into...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow to happen within the myofiber? (5 points) 2. According to the paper, what is the major disadvantage of relying on glycolysis during high-intensity exercise? (5 points) 3. Using Figure 1 in the paper, briefly describe the different sources of ATP production at 50% versus 90% AND explain whether you believe this depiction of ATP production applies to a Type IIX myofiber in a human....