Explanation:
Robert and the white snake are
Answer:
Lysosomes
Explanation:
Lysosomes are membrane bound organelles that contain degradative enzymes. They degrade worn-out cellular parts and may also be used by cells to degrade/destroy invading bacteria or viruses. Hence, since white blood cells are primarily responsible for fighting infections, it is expected that they have a high amount of lysosomes (which they indeed do have in high amount).
1) Cholesterol is important for the production of hormones, for example, some hormones are synthesized (made) from cholesterol - for example stereoid hormones.
2) Vitamin D is also made from cholesterol- it's an important vitamin used to support the absorption of calcium
Answer:
C. Systemic arterioles respond to a decrease in PO₂ by dilating, but pulmonary arterioles constrict in response to decreased PO₂.
Explanation:
In the arterioles, vasoconstriction is a response to high oxygen while vasodilation is a response to carbon dioxide and low pH. However, in the pulmonary arterioles, vasoconstriction occurs as a response to low oxygen and this mechanism is called hypoxic pulmonary vasoconstriction (HPV).
The correct answer would be option b. A neuron. The smallest functional unit of the nervous system is a neuron. A neuron is a specialized cell which transmits impulses. It processes and sends information through chemical and electrical signals. Neurons are the cells that make up the nervous system.
