I believe the answer is the B-cell
These are types of lymphocyte derived from the bone marrow and provides the humoral immunity. They produce antibodies; which are proteins that sticks to pathogen preventing them from sticking to cells and flagging them for destruction. The primary role of the B-cells is to make antibodies in large amounts and assist in destroying foreign agents through role as APC.
Answer:
D) The encoded protein contains four repeats of a specific sequence.
Explanation:
The polymerase chain reaction is a technique used to replicate or amplify the amount of DNA sample.
The technique employs running the DNA samples on the gel through which the DNA samples run based on their sizes.
The large-sized DNA fragment runs to a less distance whereas the small-sized DNA run to a large distance.
In the given question, four sizes of DNA bands are formed in the ratio of 1:2:3:4 which shows that the proteins encoded by this DNA have four repeats of a specific sequence of the template strand. This was confirmed when the largest band sample was again used as a sample of PCR and the PCR resulted in the four bands in similar 1:2:3:4.
Thus, Option-D is the correct answer.
Answer:
The grasshopper cannot be in the same location it started because by 2017, it would have covered a distance of 1017576.5 to either left or right. and that distance is not an integer.
Explanation:
The grasshopper jumps in integer of 1 cm to either right or left
Calculating for the total distance covered in 2017 jumps
Total Distance = (2017 x 2018)/2 = 2035153 cm
To either right or left: this implies that the total distance be divided by 2
=> 1017576.5 cm
It shows that at some point, the grasshopper will not be in a position of integer on either right or left.
Therefore, it can not get to its initial point of start.
<span>It is true, dural sinuses, cerebral sinuses, or cranial sinuses are venous channels found between the endosteal and meningeal layers of dura mater in the brain. They receive blood from internal and external veins of the brain,and receive cerebrospinal fluid (CSF) from the subarachnoid space via arachnoid granulations, and mainly empty in the internal jugular vein</span>
