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vichka [17]
3 years ago
9

What can indicate that two animals that look different are related

Biology
1 answer:
Novay_Z [31]3 years ago
4 0
Scientist can look at DNA sequences to determine if they are related, A scientist named Darwin proved that all species are related and descended from one common ancestor.
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Sunlight helps our bodles to produce Vitamin D. In some areas of the United States, there is not enough sunlight during the wint
MatroZZZ [7]

Answer:

It would be the first one

Explanation:

A lot of juices are pasteurized with Vitamin D it can be V8, orange juice, grape juice, cranberry juice, etc.

3 0
2 years ago
What creates a positive charge inside the cell during a nerve impulse?
sergejj [24]

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a gated sodium channels open and sodium ions flood into the cell

8 0
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Discuss how the human immune system responds to an initial pathogenic exposure and how this initial exposure can lead to a quick
Serga [27]

Answer:

Immediately, the pathogen has been recognized:

Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.

The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.

Antibodies helps to immobilize pathogen for macrophage to feed on.

if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.

6 0
3 years ago
Describe each part of the geosphere including the parts that make up the lithosphere
snow_lady [41]

The geosphere is considered that portion of the Earth system that includes the Earth's interior, rocks and minerals, landforms and the processes that shape the Earth's surface. The geosphere may be taken as the collective name for the

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  • cryosphere (The cryosphere is the frozen water part of the Earth system. The Beaufort Sea, north of Alaska. One part of the cryosphere is ice that is found in water),
  • atmosphere( is a layer or a set of layers of gases surrounding a planet or other material body)
  • lithosphere is the substantial, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure. It is bounded by the atmosphere above and the asthenosphere below. The lithosphere is further subdivided into tectonic plates. The lithosphere is the most rigid of Earth’s layers.

4 0
3 years ago
HELPPPPP<br> how could changing one mRNA codon change a protein?
Alex_Xolod [135]

Answer:

the outcome of a frame shift mutation is complete alteration of the amino acid sequence of a protein. This alteration occurs during translation because ribosomes read the mRNA strand in terms of condons,or groups of three nucleotides. theses groups are called the reading frame.

Explanation:

hope that helps.:)

5 0
2 years ago
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