C. because stimuli is how your body responds to something, and in this case, someone's heart rate increases WHEN their blood oxygen drop. Do you see how it responds? ;-)
The type of lipid formed from rings of carbon atoms which regulate sexual function, blood glucose levels and are an important component in <u>cell membranes</u> are known as Steroids.
Steroids- A steroid is an organic molecule having four rings organized in a certain chemical configuration that is physiologically active. The two main biological roles of steroids are as signaling molecules and as critical elements of cell membranes that affect membrane fluidity.
Cell Membrane- All cells have a cell membrane, also known as a plasma membrane, which divides the inside of the cell from the external environment. The movement of materials into and out of the cell is controlled by the cell membrane.
To know more about the Steroids, click on the below link,
brainly.com/question/10105654
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Answer:
A couplet is a pair of sentences in a taxonomic key that are mutually exclusive and contrasting to each other. Couplet is a method belonging to dichotomous keys with two parallel statements that present the user with two choices for a specific characteristic trait or a qualitative or quantitative feature.
Explanation:
Answer:
The right answer is kidney, bladder, ureter, urethra.
Answer: Eubacteria and Archeabacteria (Archea)