Homework Answers
Ans- chordin proteins secreted by Spemann organizer and play a prominent role in dorsal-ventral patterning.
Initially, the BMP signaling gradient defined the dorsal-ventral axis, which is inhibited by chordin.
The integrin protein attached the cell cytoskeleton to the extracellular matrix.
E cadherin is an example of cell adhesion molecules (CAM) and plays an important role in the formation of adherens junction.
fibronectin is an example of extracellular glycoprotein, which binds to the membrane-spanning receptor protein known as integrin.
so chordin is the correct answer
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Which of the following is a BMP inhibitor secreted by the organizer? E-cadherin chordin integrin fibronectin
choices for A: hemidesmosomes, focal contacts, desmosomes, adherens junctions choices for B: integrin, cadherin, occludin choices...
choices for A: hemidesmosomes, focal contacts, desmosomes,
adherens junctions
choices for B: integrin, cadherin, occludin
choices for C: intermediate filaments, microtubles, the actin
cytoskeleton
choices for D: focal contacts, desmosomes, edherens junctions,
hemidesmosomes
choices for E: integrin, cadherin, occludin
choices for F: microtubles, intermediate filaments, the actin
cytoskeleton
Animal cells use a wide variety of junctions to connect cells to each other and to their ECM. The function of these junctions are determined by the proteins involved. Motile cells can...
Which of the following scenarios will lead to the protein to be secreted out of the...
Which of the following scenarios will lead to the protein to be secreted out of the cell? Select one: a. A protein, normally localized to the Golgi apparatus, to which the Signaling peptide is deleted b. More than one of the describe scenarios will cause the protein to be secreted outside the cell c. A protein that is normally secreted, to which its Signaling peptide is deleted and replaced with a PLS d. A protein normally localized to the nucleus,...
Which of the following scenarios will lead to the protein to be secreted out of the...
Which of the following scenarios will lead to the protein to be secreted out of the cell? Select one: a. A protein that is normally secreted, to which its Signaling peptide is deleted and replaced with a PLS b. More than one of the describe scenarios will cause the protein to be secreted outside the cell c. A protein, normally localized to the Golgi apparatus, to which the Signaling peptide is deleted d. A protein that is normally localized to...
Which of the following cell junctions uses cadherin cell adhesion molecules to anchor the actin cytoskeleton?...
Which of the following cell junctions uses cadherin cell adhesion molecules to anchor the actin cytoskeleton? Tight junction Adherens junction Desmosome Hemidesmosome Gap junction
Which of the following cell junctions uses cadherin cell adhesion molecules to anchor the actin cytoskeleton?...
Which of the following cell junctions uses cadherin cell adhesion molecules to anchor the actin cytoskeleton? Tight junction Adherens junction Desmosome Hemidesmosome Gap junction
Which of the following occurs during the absorptive phase of digestion? A. Insulin is secreted, which...
Which of the following occurs during the absorptive phase of digestion? A. Insulin is secreted, which enables body cells to absorb glucose and store excess nutrients. B. Glucagon is secreted, which enables body cells to absorb glucose and store excess nutrients. C. Insulin is secreted, which enables body cells to release glucose and excess nutrients. D. Glucagon is secreted, which enables body cells to release glucose and excess nutrients.
Which of the following is not secreted by cells lining the stomach? (a) Bile (b) HCl...
Which of the following is not secreted by cells lining the stomach? (a) Bile (b) HCl (c) Mucous (d) Pepsin (e) Gastric lipase
Which of the following statements is incorrect? The mucus secreted by the mucosal layer serves to...
Which of the following statements is incorrect? The mucus secreted by the mucosal layer serves to lubricate the lumen allowing food to pass easily The mucus secreted by the mucosal layer serves to protect the cells of the gastrointestinal tract from digestive enzymes. Some mucosal cells of the digestive system secrete digestive enzymes. Some mucosal tissue of the digestive tract is highly folded which functions to increase surface area of absorption. The mucosal cells of the stomach are responsible for...
13) Which of the following functional groups is not present in the HIV protease inhibitor drug...
13) Which of the following functional groups is not present in the HIV protease inhibitor drug below called Saquinavir? A) alcohol B) amide C) aromatic ring D) amine E) ketone N. ○ ト Saquinavir Structure
When blood glucose levels are low, glucagon is secreted. Which of the following are the effects...
When blood glucose levels are low, glucagon is secreted. Which of the following are the effects of increased glucagon levels on glycosis and related reactions in liver ? A. Concentrations of F26BP are decreased B. Dephosphorylation of phosphofructokinase 2 and fructose bisphosphatase 2 occurs C. Glycosis is accelerated D. Glycosis is slowed down E. Phosphorylation of phosphofructokinade 2 and fructose bisphosphatase 2 occurs F. Concentrations of F26BP are increased I believe D & E , please explain and list any...
choices for A: hemidesmosomes, focal contacts, desmosomes,
adherens junctions
choices for B: integrin, cadherin, occludin
choices for C: intermediate filaments, microtubles, the actin
cytoskeleton
choices for D: focal contacts, desmosomes, edherens junctions,
hemidesmosomes
choices for E: integrin, cadherin, occludin
choices for F: microtubles, intermediate filaments, the actin
cytoskeleton
Animal cells use a wide variety of junctions to connect cells to each other and to their ECM. The function of these junctions are determined by the proteins involved. Motile cells can...
Which of the following scenarios will lead to the protein to be secreted out of the cell? Select one: a. A protein, normally localized to the Golgi apparatus, to which the Signaling peptide is deleted b. More than one of the describe scenarios will cause the protein to be secreted outside the cell c. A protein that is normally secreted, to which its Signaling peptide is deleted and replaced with a PLS d. A protein normally localized to the nucleus,...
Which of the following scenarios will lead to the protein to be secreted out of the cell? Select one: a. A protein that is normally secreted, to which its Signaling peptide is deleted and replaced with a PLS b. More than one of the describe scenarios will cause the protein to be secreted outside the cell c. A protein, normally localized to the Golgi apparatus, to which the Signaling peptide is deleted d. A protein that is normally localized to...
Which of the following cell junctions uses cadherin cell adhesion molecules to anchor the actin cytoskeleton? Tight junction Adherens junction Desmosome Hemidesmosome Gap junction
Which of the following cell junctions uses cadherin cell adhesion molecules to anchor the actin cytoskeleton? Tight junction Adherens junction Desmosome Hemidesmosome Gap junction
Which of the following statements is incorrect? The mucus secreted by the mucosal layer serves to lubricate the lumen allowing food to pass easily The mucus secreted by the mucosal layer serves to protect the cells of the gastrointestinal tract from digestive enzymes. Some mucosal cells of the digestive system secrete digestive enzymes. Some mucosal tissue of the digestive tract is highly folded which functions to increase surface area of absorption. The mucosal cells of the stomach are responsible for...
13) Which of the following functional groups is not present in the HIV protease inhibitor drug below called Saquinavir? A) alcohol B) amide C) aromatic ring D) amine E) ketone N. ○ ト Saquinavir Structure
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