Enzymes are proteins that behave as biological catalysts. They need to have a very specific three-dimensional shape in order for the reaction to occur. If the three-dimensional shape is not formed correctly then the chemical reaction, that is supposed to be promoted by the enzyme, may not occur.
Answer:
b). activation of T cells
Explanation:
An APC (antigen-presenting cell) can be described as an immune cell, which detects, uptakes, and informs the acquired immune response when an infection takes place. B cells, macrophages, and dendritic cells are antigen-presenting cells.
These cells play an important role in activation of T cells. T cells are unable to recognize soluble or free antigens and can only recognize antigens processed and presented by carrier molecules, such as MHC molecules.
Presence of MHCII molecules is a defining feature of APCs that process and present antigens to T cells. Hence, all antigen-presenting cells help in activation of T cells.
Thus, the correct answer is option (b).
Dependent and independent variables are variables in mathematical modeling, statistical modeling and experimental sciences
Answer:
0 degree kelvin
Explanation:
I converted them all to Fahrenheit and these were the results...
a. 0 degree Celsius- 32 Fahrenheit
b. 0 degree kelvin- -459.67 Fahrenheit
c. 32 degree Fahrenheit
d. 273 kelvin- 31.73 degree Fahrenheit
