Which of the following molecules are signal molecules for a receptor tyrosine kinase?
1.insulin
2.epidermal growth factor
3.nerve growth factor
4.platelet derived growth factor
5.All of the choices are correct.
5
You might also like to view...
In sickle cell anemia, the defective hemoglobin differs from the normal hemoglobin by
A. the color of the pigment. B. the size of the molecule. C. a single amino acid substitution. D. the total number of amino acids. E. the type of blood cell it is found in.
Which of the following is the correct order for the synthesis of the plant cell wall, from the outermost layer to the innermost layer?
A) middle lamella; primary cell wall; secondary cell wall; plasma membrane B) primary cell wall; middle lamella; secondary cell wall; plasma membrane C) plasma membrane; secondary cell wall; primary cell wall; middle lamella D) middle lamella; secondary cell wall; primary cell wall; middle lamella E) primary cell wall; secondary cell wall; plasma membrane; middle lamella
Which of the following is mismatched with regard to similar excellular structures in plant and animal cells?
A) elastins-extensins B) extracellular matrix-cell wall C) collagens-cellulose D) proteoglycans-hemicelluloses E) fibronectins-pectins
Substrate-level phosphorylation occurs during which of the following stage(s) of glucose catabolism?
A) formation of acetyl-CoA B) lysis stage of glycolysis C) energy-conservation stage of glycolysis D) Krebs cycle E) formation of acetyl-CoA and the Krebs cycle