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MaRussiya [10]
3 years ago
9

The gradual decline in men's testosterone levels in middle age can reduce their _____.

Biology
1 answer:
Phantasy [73]3 years ago
3 0
The gradual decline in men's testosterone levels in middle age can reduce their sex drive
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Which best describes the fossil record?
Sonbull [250]

The correct answer choice is answer B.) The fossil record provides evidence of a common ancestor to many species. Hope this helped!

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Epinephrine acts as a signal molecules that attaches to ____ proteins.
tia_tia [17]

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G-protein-linked receptor

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Epinephrine acts via G-protein-linked receptors. The heterotrimeric G proteins located within the cell are activated by G protein-coupled receptors that span the cell membrane. Signaling molecules bind to a domain on the GPCR located outside the cell, and an intracellular GPCR domain then in turn activates a particular G protein.

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A patient with sneezing, congestion, fever, and a cough visits the doctor and asks for an antibiotic as treatment. Which of the
Allisa [31]
A. Because the symptoms will become worse and the patient obviously does not want it to continue into s more difficult virus
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3 years ago
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The shape of the external ear is maintained by ________. Select one: a. hyaline cartilage b. adipose tissue c. fibrocartilage d.
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Answer:

D) elastic cartilage

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There are three types of cartilages- the elastic, hyaline and the fibrocartilage. Among these three the cartilage which forms the external ear is the elastic cartilage. The elastic cartilage is composed of the elastin protein, type II collagen and the elastic fibres. The presence of the elastin proteins and fibres allows the ear to be an elastic organ.

Thus, Option-D is the correct answer.

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Which condition is required for viruses to reproduce
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A host cell. Without a host cell, the viruses cannot survive since they don't have any chemical machinery

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