Answer:
No short answer.
Explanation:
First and second generation pesticides differ vastly in terms of their contents and effects.
First generation pesticides were used in early 20th century up until the 1940's and they consisted chemicals such as mercury and lead which were not biodegradable and they started adding up in the soil until it was not fertile anymore. Second generation pesticides were divided into three groups as chlorinated hydrocarbon, organophosphates or carbamates and consisted of chemicals that were less harmful for the soil and did not accumulate over time. Some examples to second generation pesticides can be DDT or dimethoate.
Broad spectrum and narrow spectrum pesticides have the difference of effective range between them. Narrow spectrum pesticides are designed to target a specific organism such as a specific plant or an insect whereas broad spectrum pesticides are applicable to a wider range of organisms and still have the same effect for each.
Chitin Inhibitors can be given as an example of narrow-spectrum pesticides and the second generation pesticides in the answer can be given as an example of broad-spectrum pesticides.
I hope this answer helps.
There are important differences in the structure and chemical makeup of their cells.
Some prokaryotes are unicellular, and others are multicellular. Although bacteria and archaea are similar in some ways, there are important differences in the structure and chemical makeup of their cells.
Answer: c. Death
Explanation:
Apostosis which means program cell death is this occurs when the cell is partially damaged or when the a mutant DNA can not be repaired by DNA repair mechanism, cells undergo a this process called apostosis which prevent the cell from passing the defect DNA to daughter cells.
Differentiation and growth needs reshaping of organs, this could be done only when old cells are removed from the area. Removal of superfluous, aged or partial damaged cells is done by apostosis.
I’ll help but the image for me isn’t available sorry.
Answer:
C. Helicase
Explanation:
Helicases are the enzymes involved in unzipping of the double stranded DNA molecule at beginning of DNA replication. They do so by binding at DNA sequences called origins on DNA molecule then they break the hydrogen bonds between complementary base pairs causing the two strands of DNA molecule to unzip.
