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These organelles evolved from invaginations of the plasma membrane.

These organelles originated from engulfed prokaryotic cells.

These organelles were formed through simple diffusion.

These organelles are unrelated to prokaryotes.

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#10 on Quiz
Hepatitis B is a viral infection that affects the liver and can cause serious health problems if left untreated. The virus spreads mainly through contact with infected blood, semen, or other body fluids. Many people with Hepatitis B may not show symptoms for months or even years after infection.
Which of the following best explains why someone cannot get Hepatitis B by sharing a classroom with an infected person?

The virus can only spread through the air when someone coughs or sneezes.

The virus does not survive outside the human body at all.

The virus requires direct contact with infected body fluids to spread.

The virus only spreads through contaminated food or water.

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Organism A is .

Organism B is .

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#9 on the Quiz
Foot-and-mouth disease is a viral illness that affects cattle, sheep, and pigs (livestock). It spreads rapidly among these animals and can cause severe economic losses in the livestock industry. However, humans rarely get infected with this disease.
Which of the following best explains why foot-and-mouth disease affects livestock but not humans?

The cell membrane of the livestock is weak when compared to the cell membrane of human cells.

The glycoprotein keys of the virus can attach to markers on cattle, sheep, and pigs cells but not human cells.

The capsid of virus breaks the cell wall of cattle, sheep and pigs but not human cells because humans have a stronger immune system.

The glycoprotein markers on the virus are destroyed by human cells through lysis, so infection is impossible.

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Explain the similarities and differences between prokaryotic and eukaryotic cells below.

Prokaryotic cells and eukaryotic cells are similar in that they both .