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ASHA 777 [7]
3 years ago
11

What is the major function of valves in human veins

Biology
1 answer:
Olenka [21]3 years ago
3 0
To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).         
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People with heart problems often have trouble breathing. why would this happen?
-BARSIC- [3]
The pumping of the heart is tied to the respiratory system

3 0
3 years ago
Read 2 more answers
The blank process helps fuel your metabolism with oxygen
Natali [406]

Answer:

Cellular Respiration

Explanation:

Metabolism is the sum of chemical reactions taking place in the living organisms. Cellular respiration is one such metabolic process.  Cellular respiration takes place in in the all organisms in which respiratory substrate such as glucose is oxidised completely in presence of oxygen to produce carbon dioxide, water and energy (ATP). Cellular respiration begins in cytoplasm and completes in the mitochondria of the cell.  The energy is used to do work.

The oxidation reaction is given below:

         C₆H₁₂O₆+ 6O₂ → 6CO₂+ 6H₂O + Energy  

6 0
3 years ago
Calculate the number of amino acids encoded by a DNA sequence of 36 nucleotides
ipn [44]

Answer:

See answer below

Explanation:

Hi there,

Assuming this DNA strand is fully capable of being mature mRNA (5' m7G cap and PolyA tail), nucleotides lead to an mRNA codon, which is 3 nucleotides per codon. In turn, 1 codon leads to 1 amino acid. However, as a single strand, it must be capable of terminating translation, which always requires a stop codon, and thus 3 nucleotides. Hence, we must subtract this from the total amount of codons first.

Hence, only 11 amino acids will be coded by a single DNA strand 36 ncltd long.

thanks,

7 0
2 years ago
Mario at lab table A needs a pair of forceps (tweezers). Max at lab table B tosses Mario a pair. In terms of laboratory safety,
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I believe the answer is "It is unsafe and can result in someone getting hurt."

Hope this helped !!


3 0
3 years ago
When you are on the roller coaster at Carowinds, your adrenal cells near the kidneys
kicyunya [14]

Answer:

D. Cell signalling which is released by one type of cell and acts upon a different cell

Explanation:

According to this question, adrenal cells near the kidney releases an hormone called ADRENALINE, which causes the cells of the heart to beat faster. This is an example of CELL SIGNALLING because chemical signals released by adrenal glands causes/triggers a response in the heart cells.

The chemical signal released by the adrenal cells is the ADRENALINE HORMONE, which induces a response in cells that are different from the cells of release (adrenal cells).

5 0
3 years ago
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