Answer:
C
Explanation:
Lice. External parasites are those that live on the outside of the body. A few of the most common external parasites that affect beef animals
The atomic number of an element is the number of protons in the nucleus of an atom of that element.
Atoms with the same number of protons, but a different number of neutrons are called isotopes.
Answer:
Exocytosis: It is defined as the process of membrane-bound vesicles fusing with the plasma membrane and later releasing their contents to the extracellular part of the cell.
Endocytosis: It is defined as the process of capturing a particle from outside the cell by the engulfing process with the cell membrane. It is basically two types:
1) Pinocytosis: Cellular drinking.
2) Phagocytosis: Cellular eating.
Answer:
When directed mutagenesis which is also called reverse genetics is used, only a single mutation per genome is introduced. In contrast, the number of mutations per genome introduced by random mutagenesis is usually difficult to control. It is likely that the strain you obtained with a mutation in gene X after random mutagenesis contained an additional mutation or perhaps multiple mutations which ultimately was/were responsible for loss of virulence in your favorite pathogen.
Anaerobic respiration is a function that can provide energy to organisms in place of, or in the absence of oxygen, so choice D. would be accurate.
