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leva [86]
3 years ago
8

Action potentials received directly from ________________ stimulate the papillary muscles to contract allowing for the proper __

_____________ of the AV valves.
Biology
1 answer:
BartSMP [9]3 years ago
7 0
Atrioventricular node; closing
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Similarities between prokaryotic and eukaryotic cells
Paul [167]

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Prokaryotic, and eukaryotic cells share basically four common features:

1) A plasma membrane which is known as outer covering membrane it helps to separate the interior part of the cell from its surrounding.

2) Cytoplasm which is consisted of gel like region inside the cell where other parts of the cell are found.

3) Genetic material of the cell which is known as DNA.

4) Ribosomes, which helps in protein synthesis.

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2 years ago
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The pedigree chart could represent all of the following disorders EXCEPT A) hemophilia B) sickle-cell disease C) red-green color
Thepotemich [5.8K]
The only disorder that cannot be represented using pedigree chart is sickle cell anemia. this because hemophilia, red-green color blindness, and duchenne muscular dystrophy are all X-linked traits. on the other hand sickle cell anemia is an autosomal recessive condition which cannot be represented in the pedigree chart since only sex linked traits are found this chart.   
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3 years ago
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How do you think the human body<br> Uses<br> capillary action in the body? Give an example.
MrRissso [65]

Answer:

The vascular system

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The human blood circularitory system can be used to explain capillary action in the human body, our heart pumps blood in and out with no use of external forces.

3 0
2 years ago
A researcher is carrying out an experiment where she labels a protein with a fluorescent tag (so she can visualize its location
melisa1 [442]

Answer:

The protein likely travels through a common lumen shared by thylakoid membranes and grana, and cannot easily diffuse through the thylakoid membrane.

Explanation:

There is a lot of scientific research in which a specific molecule can be labeled with some fluorescent marker (usually carbon 14). This type of marking allows the researcher to make observations about the movement of these molecules, as you can see in the question above. About the research shown in the question, the researcher realized that the protein labeled with the fluorescent marker moved between the grana and was always in the lumen, so she can conclude that the selocomovement protein moved through the lumen that is shared between the tilacoid membranes and the grana.

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3 years ago
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