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Zanzabum
2 years ago
7

Describe the similarities and differences in the way humans and insects obtain oxygen.

Biology
1 answer:
Molodets [167]2 years ago
4 0

Answer:

There are many ways.

Explanation:

Humans have a combined respiratory and circulatory system, whereas insects do not. In humans, the air is brought in through the mouth/nose, through the windpipe, and into the lungs, the oxygen is absorbed into the bloodstream where it can be transported to muscles and organs. However, insects take in air through tiny holes in their thorax and abdomen. These are called spiracles. The oxygen is stored in many dorsal air sacs to be used. Then carbon dioxide is expelled through the spiracles.

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You are a stem cell therapist who is researching a stem cell therapy to help broken bones heal faster. This therapy involves inj
melisa1 [442]

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Realizing that stem cells are a natural component of our body rather than some new, miraculous innovation is the first major epiphany. To put it very broadly, each and every one of us was once nothing more than a few stem cells.

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3 0
2 years ago
Do red stars have higher or lower mass
steposvetlana [31]
Higher mass bc the hotter it it the higher the mass will be
3 0
3 years ago
To assess Mendel’s law of segregation using tomatoes, a true-breeding tall variety (SS) is crossed with a true-breeding short va
lapo4ka [179]

Answer:

0.949367 ≈ 0.95.

Explanation:

The chi square analysis can be done by the formula as follows:

Chi square = (O-E)²/E

Here, O is observed value and E is expected value.

The tall trait follows the Mendel's law, this means the cross between F1 results in the formation of progeny with ratio 3( tall) : 1 (short).

The observed values for set I is  63 tall, 16 short.

The expected value for tall plant =  \frac{3}{4}\times79 = 59.25 .

The expected value for short plant = \frac{1}{4}\times79 = 19.75.

Put these value in the formula for chi square analysis:

For tall plants = ( 63 - 59.25)²/ 59.25= 0.237.

For short plants = (16 - 19.75)²/ 19.75 = 0.712

Total value for set I = 0.237 + 0.712 = 0.95.

Thus, the answer is 0.95.

6 0
4 years ago
The client with a diagnosis of schizophrenia walks into group naked. the nurse should:
seropon [69]
<span>The nurse should take the client to a private area preferably the client's room and help him get dressed. The client may be too erratic and confused to put the clothes on by himself or herself, so the nurse should help. The nurse does not need to be aggressive or mean because they do not want to risk agitating the client.</span>
6 0
3 years ago
Membrane proteins can have a variety of functions. What functions can these proteins have? Check all that apply.
SpyIntel [72]

Answer;

-Channel, Recognition, reception, transport

Explanation;

Membrane proteins serve a number of functions:

• Channel proteins: allow dissolved molecules to diffuse through the membrane. Some of these proteins are structured in a way that allows only certain small molecules or ions through.

• Carrier proteins: These have binding sites that allows them to bind to certain substances and physically move the substance from one side of the membrane to the other.

• Receptor proteins: These proteins have active sites shaped to fit specific signal molecules, such as hormones. Once the protein is activated by the substance, it sets off a series of changes in the cell,such as increased metabolic rate or cell division.

• Recognition proteins: These proteins, called glycoproteins (glyco = sugar) have complex carbohydrates attached to them. These form the identification system that allows your body cells to recognize each other as self instead of foreign.

• Protein filaments: Long strands of protein on the inside surface of the membrane help support and strengthen the cell membrane, forming the cytoskeleton.

5 0
3 years ago
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