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d1i1m1o1n [39]
3 years ago
6

What is unusual about Earth’s mantle being exposed?

Biology
1 answer:
cluponka [151]3 years ago
6 0

Answer:

There is no actual way that the mantle could be...'exposed' or 'seen'. But scientists have managed to find multiple ways to analyze the mantle and it's actual existence by using multiple devices. The mantle is basically a 2,900 kilometers (1,802 miles) thick blocks of rocks and minerals underneath the crust(or the surface of the earth) , and makes up a whopping 84% of Earth's total volume.

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A newly synthesized protein destined for secretion from a eukaryotic cell will generally:______.
ycow [4]

A newly synthesized protein destined for secretion from a eukaryotic cell will generally Rough ER - Golgi- transport vesicle - plasma membrane.

<h3>What is eukaryotic cell?</h3>
  • Eukaryotes are organisms having cells that contain a nuclear envelope around their nucleus.
  • They are a member of the Eukaryote class of organisms.
  • One of the three domains of life is the eukaryotic domain.
  • The other two are the bacterial and archaeal domains.
  • Organisms called eukaryotes have nuclei and membrane-bound organelles in their cells.
  • Eukaryotic creatures come in a great variety, including most algae, all animals, plants, fungus, and protists.
  • Eukaryotes are multicellular or unicellular organisms.
  • The primary distinction between these two categories of organisms is that eukaryotic cells have a membrane-bound nucleus while prokaryotic cells have not.
  • The nuclei of eukaryotes house their genetic material.

Learn more about eukaryotic cell here:

brainly.com/question/18093961

#SPJ4

3 0
2 years ago
Which of these indicates equilibrium in the community? A. seral B. pioneer C. ultimate D. intermediate E. climax
andrew11 [14]

Answer:

E. climax

Explanation:

Even though it is not something that is very common in nature, there are still certain exceptions where certain communities manage to reach a point of equilibrium.  This basically is a community of small number of dominant prominent species that create a stable ecosystem. This state of equilibrium is known as climax community. This type of community appears when the web of biotic interactions between the organisms becomes so intricate that there is no possibility of other species to be admitted in it.

5 0
3 years ago
What has to happen before mitosis begins?
Leokris [45]

Mitosis is simply a stage in a cells life cycle, which could be broken down further into stages of mitosis. The rest (so not mitosis) is know as Interphase and is where the cell does its normal function, so if it's the cell is in a region of muscle it would contract/relax as normal etc.

Immediately before mitosis (or M phase) is what's know as G2 phase, where the G stands for growth and is where particular gene pathways are expressed to promote growth of the volume of DNA (chromosomes are duplicated, so from 46 to 92). At the end of this stage is a checking process where the DNA is scrutinised for any errors, if all is okay then the cell can proceed to mitosis, if not then the process is stopped so that errors in copying the DNA can be fixed. This is know as a restriction point and the cell must meet the requirements to pass. This is often seen as a way cells can prevent damage being replicated and therefore interfering with normal cell processes. When cells are cancerous they are able to override this and therefore divide and spread the damaged DNA.

5 0
3 years ago
Examine the statement. A scientific theory can become a scientific law, but a scientific law cannot become a scientific theory.
Elena L [17]

Answer:

1.) True

Explanation:

A scientific theory can become a scientific law, but a scientific law cannot become a scientific theory.

A scientific theory is what is made to scientific law after many trials to prove the scientific theory is true. But after they changed a scientific theory to scientific law, it can't be changed back because it has been disproved many years later.

Hope it helps.

7 0
3 years ago
Most nutrients are absorbed through the mucosa of the intestinal villi by active transport.
sergey [27]

False, most of the nutrients are absorbed in our stomach.  The intestines are mainly for waste.  

7 0
3 years ago
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