O do not receive enough oxygen during a strenuous exercise.
Answer:
According to the cell theory cell is the structural unit of all living organisms and viruses cannot be considered as living organisms according to this theory
Explanation:
Viruses are not made up of cells and they only contain genetic material like RNA or DNA. since viruses are not made up of cells they do no fit the classification of living organisms. To define living organisms other criterion like reproduction, maintenance of homeostasis and ability to adapt to the external environment are mentioned in the cell theory.
Viruses have the ability to replicate and adapt to even extreme conditions of their environment which makes the question of classifying viruses in the category of living organisms even more complicated.
Answer:
Zone 4
Explanation:
The phreatic zone, or zone of saturation, is the part of an aquifer, below the water table, in which relatively all pores and fractures are saturated with water. Above the water table is the vadose zone.
The area between the top of the water table and beginning of bedrock/impermeable rock is the saturated zone.
Answer:
B) Prokaryotic DNA is much smaller than eukaryotic DNA.
Explanation:
In biology, one event is correlated with the other event or structure like observed in the DNA. The genetic material of a eukaryote and a prokaryote differ from the other in many ways:
1. The prokaryote possesses only one chromosome which is double-stranded and circular.
2. The eukaryotic organism exhibits more than one chromosome which is not circular.
Since the prokaryotes possess very less amount of DNA then the eukaryotes therefore during DNA replication, the DNA of prokaryote require only one origin of replication from where the replication will start.
Thus, Option-B is correct.
