<span>National highway traffic safety administration doing the survey in Basis of this research, He found that the drivers who get more citations are involved more road crashes. These guys are not taking seriously to his life. Road safety is very important for these.</span>
Answer:
Explanation:
AP Biology Question:
Scientists are testing substance L to determine how it enters mammalian cells in a culture. The cells maintain a 120 millimolar (mM) intracellular concentration of substance L . The scientists determined the rate of entry of substance L into the cells at various external concentrations of substance L (10 to 100 mM) in culture medium (Table 1).
The question is incomplete. Th ecomplete question is as following:
All of the following protect the skin and mucous membranes from infection EXCEPT
A) multiple layers of cells.
B) tears.
C) saliva.
D) HCl.
E) the "ciliary escalator."
Answer: D) HCl.
Explanation:
- The epidermis, the outer layer of the skin provides waterproofing and serves as a barrier to infection and other laers also sustain any type of injury.
- Tears wash out foreign bodies which enter the eye. In addition, tears contain a substance called lysozyme which has an antibacterial function and works to prevent microbial invasion and infection.
- Saliva protects against infection, especially via the innate immune system. This mechanism is an important first-line protection against bacterial and viral infection
- The mucociliar escalator is within the conducting airways and is composed of mucus and cilia that transfer the mucus up and out of the lungs where it can be removed by coughing or swallowing,
Whereas HCL helps in the digestion process.
Hence, the correct option is D.
According tom Lichens, represented by this symbiotic relationship, are responsible for primary succession <span>or the establishment of a new site for plant growth. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has helped you.</span>
It is a missense mutation because this alteration changes the encoded amino acid. This type of mutation may have evolutionary consequences.
<h3>What are mutations?</h3>
A mutation is any alteration in the nucleotide DNA sequence of the genome of an organism.
A missense mutation is a type of mutation that alters (modifies) the encoded amino acid, thereby changing the resulting protein.
Missense mutations have the potential to alter the function of the resulting protein and therefore they have evolutionary consequences.
Learn more about mutations here:
brainly.com/question/17031191
