Based on cell theory, which of these answer choices would describe one reason a virus is considered nonliving?

1 answer:

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Answer: Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.

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A herd of cattle is an example of

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Answer:

An example of a herd is a group of people who all dress and act in a similar way.

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Mamalas

The organs which perform same function and looks but they are different in their structure from each other are called as analogous organs.
Organs are the structures that made up of two or more tissues organized to carry out a particular function.
An organ or bone that appears in different animals with the same function is called homologous structure.
Homologous organs have similar origin n basic structure but perform different functions in different organisms. Analogous organs are different in basic structure but perform same functions.

Examples :
The arm of a human,the wing of a bird or a B at, the leg of a dog and the flipper of a dolphin or whale are homologous structures.

The forelimbs of all mammals have the same basic bone structure. The structures are all similar because they envolved to do the same job.

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Which of the following is the best example of an organism maintaining homeostasis?

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D. A mole digging tunnels in the ground

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What is the difference between normal tissue and cancer

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Cellular communication is an important aspect in cancer prevention because a group of cells growing rapidly can be recognized and halted before given the chance to grow out of control. It is well known that in a cancerous cell, one of the first mutations to occur is in its ability to communicate with its surroundings. In absence of this characteristic cells are able to grow rapidly and invade surrounding tissues even though they may be receiving, but not processing appropriately, external signals to halt growth.

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Drag and drop the words into the correct locations. (1 point)

laila [671]

A star goes throgh different stages until it gets completely formed. The first stage is nebula. Nebulae are _dust and gas_ where _ stars_ can form.

<h3>Star Cycle</h3>

The star cycle is the sequence of changes that a star undergoes throughout its existence.

The evolutive stages of a star differ between an average star and a giant star.

However, the first stages of the cycle are shared by all of them.

<h3>What are the common stages in stars cycles? </h3>

Nebula

Stars are born from the nebula that is the dust and gas particles condensation due to gravity effect in the interstellar clouds

Protostar

It is a more advanced level of condensation.

Main sequence.

Equilibrium between gravity and nuclear fusion helps the star keep stable as long as the fuel lasts.

Hence, according to this resumed introduction to stars cycles, we may say that

Nebulae are _dust and gas_ where _ stars_ can form.

You will learn more about the stars cycle and nebula at

brainly.com/question/23728075

brainly.com/question/12741050

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