Elements In the same group or family in the periodic table have the same number of valence electrons.
For example the halogens all have 7 valence electrons in their outermost electron shell.
Answer:
Hypothesis: If mucus production in the submucosal layer of the esophagus is insufficient, cell longevity is affected, because it interferes with the quality of connective tissue.
Explanation:
In a scientific research the hypothesis is an assumption, a possibility that will justify the purpose of the scientific research and will help in the establishment of all the steps of this research, so that it is possible to determine if the hypothesis is true or false. In other words, we can say that the hypothesis must be formulated as an assumption, before the research that will prove it or not.
An example of a hypothesis about research on the longevity of cells that line the esophagus is: "If mucus production in the submucosal layer of the esophagus is insufficient, cell longevity is affected, because it interferes with the quality of connective tissue."
Light reaction occurs in presence of light while in dark reaction light is not needed
Answer:
A monograph is a specialist work of writing or exhibition on a single subject or an aspect of a subject, often by a single author or artist.
Explanation:
Facts : -
- A Monograph has some common characteristics with books and review ( survey ) papers.
- A monograph is a special type of book written on a single specialized topic, devoted mainly for research works.
- It could pose some unsolved problems and may provide detained explanation of some research papers.
Answer:
The right answer for the blank is cleavage.
Explanation:
After fertilization the next step is cleavage in which zygote divide mitotically. As the embryo move from oviduct down the fallopian tube it divide into two cell and then four cells. four cell embryo is known as blastomere.
