Glucose is needed because glucose is a form of sugar and sugar is an energy source, so it gives eenergy
<span>Water molecules connect to hydrogen bonds.</span>
Answer:
D. 3 mi/min
Explanation:
Given:
Distance = 75 miles
Time = 25 minutes
Required:
Speed
Solution:
Formula for calculating speed = distance covered / time
Therefore:
Speed = 75 miles / 25 minutes = 3 mi/min
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).
