Answer:
The correct answer is b. Immunogens
Explanation:
Immunogens are the antigens that can trigger the immune response in the body once gets inside the body. Any antigen having capacity to excite a immune response against them is called immunogens but not every antigen is immunogen.
An antigen is called immunogen when it has some characteristic features like foreignness, high molecular weight and chemical complexity. An immunogen can initiate both innate and adaptive immune response. Adaptive immune response is memory based and very specific for any particular immunogen.
Some common immunogens are: bacteria, virus, drugs, chemicals, dust, toxins.
Answer: B- chemicals (changing pH)
Explanation:
Chemoreceptors in the bodies and archs that are sensitive to changes in carbon dioxide, oxygen, and pH.
The correct answer is D. Hypertension.
Explanation
Arterial hypertension is a disease of the circulatory system of the human body in which the pressure of blood flow through the veins and arteries increases above normal levels increasing the risk of cardiovascular accidents, coronary heart disease, heart failure, cerebrovascular accidents, and renal insufficiency.
A third of the world's population suffers from this condition and it is the first cause of visiting the doctor. Also, this disease is related to certain habits including, eating habits, sports activities, and the consumption of substances such as cigarettes and alcohol. So, the correct answer is D. Hypertension
Originating within another
Adults with presbycusis may have difficulty in discriminating fricatives because they have fewer functional nerve cells in the inner ear, which makes the inner ear work harder to process and transmit sound when background noise is present.
This indicates that the inner ear and brain are not effectively communicating with one another.
Presbycusis is the gradual hearing loss that most people experience as they age.
An age-related disorder that is common is hearing loss.
A hearing loss affects 30-35 percent of persons over 65. A hearing loss affects 40–50% of adults aged 75 and older, according to estimates.
Its primary symptom is trouble discriminating fricatives from background noise as the inner ear has to work harder to process and transmit sound when background noise is present because they have less functioning nerve cells.
Learn more about Presbycusis here brainly.com/question/4517300
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