Answer:HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe.
Explanation:
Answer:
The correct answer is option A.
Explanation:
Striated muscle tissues are muscle tissue that made up of repeated long functional units known as sarcomeres. The long bands of sarcomeres along with muscle fibers provide it a striated appearance. Striated muscles have more mitochondria in it and also contain cells that are multinucleated, unlike smooth muscles. The major function of these muscles is to generate force and contract. Heart and respiratory organs have such muscle.
Thus, the correct answer is option A.
The reason animals need a continuous supply of oxygen is to<u> Obtain energy from their food.</u>
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The most fundamental reason why animals need a non-stop delivery of oxygen is without it animals can't achieve sufficient power from their meals.
Cells require a steady delivery of power to generate and preserve the biological order that keeps them alive. This electricity is derived from the chemical bond energy in food molecules, which thereby function as fuel for cells.
The animal's metabolism converts oxygen into strength. All through this system, a waste gas called carbon dioxide is produced. To remove it, the carbon dioxide is carried lower back to the lungs, where its miles are collected and exhaled.
Learn more about metabolism here: brainly.com/question/461228
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Sound waves are reflected back from the while some of the sound wave goes through. Welp good luck
Mirror neurons are activated.
A mirror neuron is a special type of neuron involved when an animal performs an action which and when the animal sees other animals performing the same action. The mirror neuron replicates the behavior of the other animals as if the animal itself was acting. These types of neurons are found primarily in primates, and in humans, the region of the brain where they are located is the premotor cortex, among a few others.
