Microbial siderophores are A. synthesized in response to the iron status of the environment. B. small...
Microbial siderophores are
A. synthesized in response to the iron status of the environment.
B. small molecular weight organic molecules that bind iron in the environment.
C. membrane proteins that facilitate diffusion of iron across the cytoplasmic membrane.
D. Two of the above.
Homework Answers
Answer:- (c). membrane proteins that facilitate diffusion of iron across the cytoplasmic membrane.
Siderophores are small, high-affinity iron-chelating compounds that are secreted by micro-organisms such as bacteria and fungi, and are mainly used to transport iron across cell membranes, although an growing range of siderophore functions is now recognized.
Add Answer to:
Microbial siderophores are
A. synthesized in response to the iron status of the
environment.
B. small...
which statement about iron uptake into bacterial cells is FALSE? a) siderophores bind ferric iron b)...
which statement about iron uptake into bacterial cells is FALSE? a) siderophores bind ferric iron b) bacteria can have receptors for siderophores that they themselves do not make c) in a form of nutritional immunity, human cells compete for iron in order to prevent iron uptake d) ferric iron is extremely soluble, and this is why there is a fierce competition for it in nature
09. Which of the followine statements regarding channel proteins (shown below (shown below) is for propratic...
09. Which of the followine statements regarding channel proteins (shown below (shown below) is for propratic of all a. Channel proteins can assist polar molecules to cross the plasma membrane by facilitated diffusion b. The gated ion channel can allow ions to pass when stimulated to open. c. The surface of a channel protein in contact with the bilayer would likely have hydrophilic amino acids d. Water plays a role in determining which ions are allowed to pass through an...
glow) is false of the carrier proteins? molecules in cases, the rate or cases, the rate...
glow) is false of the carrier proteins? molecules in cases, the rate or cases, the rate of diffusion 20. Which label in the graph represents saturation of the sa 71 According to the graph, as the number of glucose mo increases indefinitely b. decreases Cincreases until a plateau is reached d can either increase or decrease. cremains the same diated endocytosis. Which of the 79The figure below shows the process of receptor-mediated following statements regarding this process is false? Coated...
1. A person has a mutation in their leptin gene, such that the leptin they make...
1. A person has a mutation in their leptin gene, such that the leptin they make cannot bind to the leptin receptor. What do you predict about their weight/BMI? WHY? 2. A person has a mutation in their leptin receptor, such that it can bind to leptin, but then the receptor fails to activate. Will leptin be a viable treatment for this person? WHY? 3. Insulin binds to an insulin receptor on a cell. The receptor dimerizes and becomes phosphorylated...
43) The nonspecific immunity that protects a person from developing a microbial infection includes all 43)...
43) The nonspecific immunity that protects a person from developing a microbial infection includes all 43) of the following excrr! person from A) acidic secretions B) lymphocytes. Q antimicrobial proteins. D) mucous membranes. E) the skin. 4) In the inflammator from happening? y response, the absence of which of the following would prevent all of the others 44) A) leakage of plasma to the affected area Q dilation of blood vessels D) release of histamine E) increased permeability of blood...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
34. DNA polymerase A. adds nucleotides to the leading strand of DNA B. removes RNA from...
34. DNA polymerase A. adds nucleotides to the leading strand of DNA B. removes RNA from the lagging strand C. unwinds the DNA during duplication D. cuts DNA at specific sites to relieve mechanical tension E. is not used in eukaryotic cells 35. Radioactive thymidine added to a cell will bind to A. DNA that is being synthesized B. mRNA that is being synthesized C. RNA that is being synthesized D. miRNA that is being synthesized E. all of the...
annel presse ich label in the graph represents saturation of the came according to the orph...
annel presse ich label in the graph represents saturation of the came according to the orph as the number of glucose molecules increase the rate of dit increases indefinitely decreases increases until a plateau isreich can either increase or decrease cremains the same The figure below shows the process of receptor-mediated endocytosis. Which of the lowing statements regarding this process is a brane by facilita Juve hydrop soncu a. Receptor-mediated endocytosis requires receptor proteins located on the cell's surface b....
The FepC, D and G are proteins of E. coli are required to transport Fe-siderophore complexes...
The FepC, D and G are proteins of E. coli are required to transport Fe-siderophore complexes from the periplasm across the cytoplasmic membrane into the cytoplasm. In order to first transport these complexes from the environment into the periplasm, the outer membrane protein FepA is required. Expression of the fepA gene is regulated in the same way as expression of the genes in the fepCDG operon. Given this information, which one of the following statements is correct? A. In the...
is the movement of solutes from an area of higher concentration to an area of lower...
is the movement of solutes from an area of higher concentration to an area of lower concentration in solution a. Osmosis b. Facilitated diffusion Filtration d. Diffusion - Is the diffusion of water (solvent) across a selectively permeable membrane such as the plasma membrane. a. Osmosis b. Facilitated diffusion Fitration d. Diffusion means cell-drinking (pinching and is distinguished from phagocytosis in that smaller vesicles are formed and they contain molecules dissolved in liquids rather than partides a Endocytosis b. Exocytosis...
09. Which of the followine statements regarding channel proteins (shown below (shown below) is for propratic of all a. Channel proteins can assist polar molecules to cross the plasma membrane by facilitated diffusion b. The gated ion channel can allow ions to pass when stimulated to open. c. The surface of a channel protein in contact with the bilayer would likely have hydrophilic amino acids d. Water plays a role in determining which ions are allowed to pass through an...
glow) is false of the carrier proteins? molecules in cases, the rate or cases, the rate of diffusion 20. Which label in the graph represents saturation of the sa 71 According to the graph, as the number of glucose mo increases indefinitely b. decreases Cincreases until a plateau is reached d can either increase or decrease. cremains the same diated endocytosis. Which of the 79The figure below shows the process of receptor-mediated following statements regarding this process is false? Coated...
43) The nonspecific immunity that protects a person from developing a microbial infection includes all 43) of the following excrr! person from A) acidic secretions B) lymphocytes. Q antimicrobial proteins. D) mucous membranes. E) the skin. 4) In the inflammator from happening? y response, the absence of which of the following would prevent all of the others 44) A) leakage of plasma to the affected area Q dilation of blood vessels D) release of histamine E) increased permeability of blood...
34. DNA polymerase A. adds nucleotides to the leading strand of DNA B. removes RNA from the lagging strand C. unwinds the DNA during duplication D. cuts DNA at specific sites to relieve mechanical tension E. is not used in eukaryotic cells 35. Radioactive thymidine added to a cell will bind to A. DNA that is being synthesized B. mRNA that is being synthesized C. RNA that is being synthesized D. miRNA that is being synthesized E. all of the...
annel presse ich label in the graph represents saturation of the came according to the orph as the number of glucose molecules increase the rate of dit increases indefinitely decreases increases until a plateau isreich can either increase or decrease cremains the same The figure below shows the process of receptor-mediated endocytosis. Which of the lowing statements regarding this process is a brane by facilita Juve hydrop soncu a. Receptor-mediated endocytosis requires receptor proteins located on the cell's surface b....
is the movement of solutes from an area of higher concentration to an area of lower concentration in solution a. Osmosis b. Facilitated diffusion Filtration d. Diffusion - Is the diffusion of water (solvent) across a selectively permeable membrane such as the plasma membrane. a. Osmosis b. Facilitated diffusion Fitration d. Diffusion means cell-drinking (pinching and is distinguished from phagocytosis in that smaller vesicles are formed and they contain molecules dissolved in liquids rather than partides a Endocytosis b. Exocytosis...
Most questions answered within 3 hours.
-
Given that z is a standard normal random variable, compute the
following probabilities (to 4 decimals)....
asked 2 minutes ago -
You begin preparation of the calibration curve to measure
absorbance vs concentration of FeSCN2+. To do...
asked 20 minutes ago -
When you speak after breathing helium, in which the speed of
sound is much greater than...
asked 12 minutes ago -
3. Stock Valuation: You are the CEO of Under Armour, Inc. and
are thinking about how...
asked 17 minutes ago -
Choose a brand. Critique the brand in terms of its brand
positioning, brand identity and brand...
asked 19 minutes ago -
A vertical curve has grades G1 = 2.8% (downgrade) and
G2 = 2.2 (upgrade) Assume design...
asked 20 minutes ago -
(a) Derive planar density expressions for BCC
(110) plane in terms of the atomic radius R....
asked 15 minutes ago -
I have this problem now and I am not sure what we are exactly
supposed to...
asked 21 minutes ago -
Use the following set of observed frequencies to test the
independence of the two variables. Variable...
asked 44 minutes ago -
Two kg of ice at -15 °C are placed in a 2 kg bath of water...
asked 44 minutes ago -
Describe the following with suitable
examples.
1- Security Policy Heterogeneity
2-Security Model Heterogeneity
3-Security Mechanism Heterogeneity...
asked 45 minutes ago -
Please Identify the Term "Determinism" in Psychology
asked 44 minutes ago