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Nana76 [90]
3 years ago
8

The HIV virion (viral particle) is a sphere that is roughly 140 nm in diameter. What particular kind of microscope is required t

o visualize an HIV virion and what is the basis of this microscope’s ability to provide the resolution required to visualize HIV virions.
Biology
1 answer:
kondaur [170]3 years ago
8 0

Answer:

Electron microscope

Explanation:

Electron microscope uses a beam of electrons as energy source. Since the beam has an exceptionally short wavelength, it strikes most objects in its path and increases the resolution of the microscope significantly. Thus it has a higher magnification and resolution.

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dimaraw [331]

Answer:

inherited

Explanation:

Phenylketonuria is a(n) inherited disorder, meaning that it is passed from generation to generation via DNA.

6 0
2 years ago
what is a mass extinction? what is a mass extinction? an event that causes the extinction of a large fraction of earth's species
sineoko [7]

A mass extinction event occurs when a species disappears far more quickly than it is replaced. This is typically understood as the loss of around 75% of all species over a "short" period of geological time, or fewer than 2.8 million years.

An enormous number of species were wiped out by a harsh, worldwide, swift, and selective event is mass extinction. According to marine fossils, at least 75% of all species are thought to have become extinct. The most recent mass extinction is the Cretaceous-Paleogene extinction event, which is also the only one that can be proven to have been caused by a significant asteroid impact. All non-avian dinosaur species, making up about 76 percent of all species on the earth, perished during mass extinction. The Chicxulub asteroid impact in what is now Mexico, which occurred 66 million years ago, caused an ecosystem collapse that resulted in the extinction of the dinosaurs and >75% of all land and sea species as well as the macroevolution of mammals.

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8 0
1 year ago
In comparing and contrasting different cultures, the gender roles:
saveliy_v [14]

Answer:

d. vary and change for both males and females from culture to culture

Explanation:

Gender roles vary for both females and males across cultures. This can be observed in the way some societies are patriarchal and some are matriarchal. For example: in many Asian cultures, traditionally males head the families. It's their responsibility to engage in outside work and take important decisions for the family while women take care of household chores. This is reversed in some cultures like that present in Meghalaya, India. Here women are dominant figures in households. They inherit property, give their family name to children and after marriage the man comes to live with the woman's family. Hence gender roles are variable culture to culture.  

8 0
3 years ago
How does gravity keep the moon in orbit
lilavasa [31]

Answer:

here it is

Explanation:

The Sun's gravitational pull keeps our planet orbiting the Sun. The motion of the Moon is affected by the gravity of the Sun AND the Earth. The Moon's gravity pulls on the Earth and makes the tides rise and fall every day.

8 0
3 years ago
Read 2 more answers
URGENT! I need help please!!
Gelneren [198K]

Hey ur answer should be A and C

4 0
3 years ago
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