Why don't human cells have cell walls

Answers

Answer 1

Answer: Because Human Cell's cell membrane does the Cell Wall's job as well as determine what goes in and what come out. Unlike the animal cell, the Plant Cell's cell membrane can only do one job at a time, so it has the Cell wall to do the job of keeping the cells shape and structure.

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An example of a population within an ecosystem would be..

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Insects living in the tree because the tree is now populated

If a certain test follows a normal curve, most of the scores will fall __________.

Answers

the answer is in the middle

List 5 famous comets, and explain when the next one will be visible from Earth?

Answers

Answer:

1. Halley’s Comet

2. Shoemaker Levy-9

3. Hyakutake

4. Hale Bopp

5. Comet Borrelly

I have to do a newsletter in Desertification in africa, but i dont know what it is please help

Answers

HI,

Africa has a lot of animals so put a lot of thing about animals!

They basically want you to write a newsletter over Africa's water drying up, lose of vegetation and their wildlife dying (poaching). They want you to go in-depth about how the climate changing and the things that they do in their everyday life are affecting their living structure!

In the image, two cookies are used to model tectonic plates. Which plate boundary does this model represent? A.) Convergent Boundary

C.) Transform boundary

D.) none of these

Answers

The correct answer is the divergent boundary.

A divergent boundary, in plate tectonics refers to a linear characteristic, which prevails amid the two tectonic plates that are moving away from each other. The Mid-Atlantic Ridge and the Great Rift Valley are the examples of divergent boundaries.

Iceland is an illustration of a country going through a continental divergent boundary. The Mid-Atlantic Ridge differentiates Iceland and is the boundary between the Eurasian and the North American tectonic plates.

Answer:I believe the answer is C. Transform plate boundary. Search up three of the names and see how they look and compare it to the picture up above.

The variation that exists in a population of wild giraffes is usually the result of events that occur during

Answers

Sexual reproduction. Like most mammals, giraffes produce sexually, meaning that both parents contribute to the DNA of the offspring.

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What is a form of genetic manipulation used for the domestication of plants and animals? Give an example of how this technology is used

Slow cooling of hot magma leads to the formation of what crystals

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A turkey cooking in an oven will be ready when the internal temperature reaches 180°F. Convert this into Celsius and Kelvin