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sesenic [268]
3 years ago
11

The function of the sinoatrial node is to

Biology
1 answer:
stepladder [879]3 years ago
4 0
C . sinoatrial node the system that controls the heart rate . i hope it helps xD
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How do humans influence ecosystems negatively
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Human influence ecosystem by chopping down forests,and cars burning off greenhouse gases.Humans can effect the ecosystem in a negative way ,by pollution, waste dumping, over hunting of animals,over fishing,industrial gases,energy use and not using
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Identify the correct order of events that allow nutrients from foods to be used by the body. Group of answer choices digestion,
Lera25 [3.4K]

Answer:

The correct answer is- digestion, absorption, transport, elimination

Explanation:

The process of digestion starts from the mouth with the help of enzymes called salivary amylase present in our saliva. The food then passes through the esophagus to the stomach.  

In the stomach, the food is broken down in small fragments by churning movement which mixes digestive enzymes and food to form chyme.  

This chyme is passed to the small intestine where several enzymes from the liver and pancreas digest the food in smaller particles and absorb these particles in the blood. Therefore absorption takes place in the small intestine.

Then the solid waste material left behind after absorption is transported from small intestine to the large intestine and from large intestine waste is eliminated out of the body.

Therefore the correct order are: digestion → absorption→ transport→ elimination.

7 0
3 years ago
What is The decay cycle:
kirza4 [7]

Answer:

decay chain refers to a series of radioactive decays of different radioactive decay products as a sequential series of transformations.

Explanation:

5 0
3 years ago
The action of helicase creates _____. the action of helicase creates _____. primers and replication bubbles replication forks an
lapo4ka [179]
<span>The action of Helicase is to create replication forks and replication bubbles. Helicase is the first step in the DNA replication process. Helicase is an enzyme that breaks the hydrogen bond between the parental DNA to free the DNA double helix. The area where it unwinds is called as replication fork.</span>
7 0
3 years ago
A bottle of concentrated 20 M ammonia solution needs to be diluted to
storchak [24]

Answer:

The aim of question is to know about molarity of ammonia solution 25% . ... If you have 17 g NH3 in 1000 ml H2O, you have a 1M NH3. ... Can you not titrate it using standardised acid? ... Mass concentration of ammonia in stock solution = ... So 1 M means 35.04gr in a liter of water and because the solution ...

9 answers

·

Top answer:

The ammonia solution (NH3) of 25% means 25 gr NH3 in 100 ml water.

Explanation:

7 0
3 years ago
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