Answer:
b. They are produced by memory B cells
Explanation:
The rapid cell division in activated B cells is followed by the differentiation of daughter cells into the plasma cells. The plasma cells are the precursor for antibodies and memory B cells. The antibodies kill the antigens while memory B cells are long-lived cells.
Hence, antibodies are not produced by memory B cells but by plasma cells.
The question is incomplete. However, if we consider this cell as human cell - the cell contain 23 pairs of chromosomes.
Answer:
Chromosomes consists of the constricted DNA associated with the proteins. Different species has different chromosome number. Two main types of chromosomes are heterochromatin and euchromatin.
The human cells contain the 23 pairs of chromosomes or 46 chromosome. If the cell divides by the process of mitosis than the chromosome number will be same in parent as well as the daughter cell. The daughter cell 23 pairs of chromosomes. If the cell divides by the process of mitosis the cell has 23 chromosome number as the meiosis reduces the chromosome number upto half.
Scientific drawing is made-up to be precise and founded on real living things or fossils. Artistic drawings do not have to have any origin in realism and it can be abstract and it does not have to tolerate any similarity to any real life object. Artistic drawings are not unavoidably meant to be a faithful reproduction of anything in nature even though that was once the aim in the distant past before the invention of photography. Constructing good biological drawings be situated significant in that they aid to develop more accustomed with the topic over vigilant consideration to the smallest feature. Drawings allow to progress observational skills which is the principle of good science. Good drawings are those that abridge, highlight, review, and explain all at once. For these explanations, consideration to the smallest feature is precise significant. Biological drawings are not destined to be artistic masterpieces but are more like graphic notes that help record a set of observations. As such, these observations must be accomplished in class with the specimen directly observable.
The answer is <span>It is the gap between neurons that ensures that information travels in one direction only.</span>
Answer:
The correct answer is 0.53 meters.
Explanation:
The given density of water is 1025 kg/m^3
Gauge pressure, that is, (P2 - P2) = Po/19
Here Po = 1.013 * 10^5 Pa
= 1.0.13 * 10^5 Pa / 19 = 5331.58 Pa
The change in pressure associated with the depth is given by the formula:
P2 -P1 = ρgh
h = P2 - P1 / ρg
h = 5331.58 Pa / 1025 kg/m^3 * 9.8 m/s^2
h = 0.53 m
Thus, the driver can swim 0.53 meters below water.
