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klemol [59]
3 years ago
7

According to the starling law, ____ effects on cardiac rate and contractility include decreasing the rate of contraction and inc

reasing the filling time resulting in a stronger contraction.
Biology
2 answers:
ehidna [41]3 years ago
8 0
According to the starling law, parasympathetic effects on cardiac rate and contractility include decreasing the rate of contraction and increasing the filling time resulting in a stronger contraction.
The Frank-starling law of the heart states that the stroke volume of the heart increases in response to an increase in the volume of blood filling the heart when all other factors remain constant.
iren2701 [21]3 years ago
7 0
Parasympathetic is your answer
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Which of the following terms cannot be used to define a virus?
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Answer:

Any of a group of submicroscopic entities consisting of a single nucleic acid chain surrounded by a protein coat and capable of replication only within the cells of living organisms: many are pathogenic

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EARTH SCIENCE multiple choice plz help
Studentka2010 [4]

Answer;

-Carbon-14 decays into nitrogen-14.

-Once a living thing dies, it no longer takes in carbon.

-Carbon-14 dating works for fossils as old as 50,000 years.

Explanation;

-Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that.  

-Carbon dating is used by archaeologists to date trees, plants, and animal remains; as well as human artifacts made from wood and leather; because these items are generally younger than 50,000 years.

-Carbon-14 has a half life of 5730 years, meaning that 5730 years after an organism dies, half of its carbon-14 atoms have decayed to nitrogen atoms.

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2 years ago
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An opossum is an animal that is known to "play dead” when threatened by other animals. This is an example of a response to which
padilas [110]

Answer:

external stimulus

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3 years ago
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A part of an mRNA has the sequence CCG. Which change to this sequence
Flauer [41]

Answer:

A single nucleotide changes in CCG which will result in missense mutation can be many possibilities.

Explanation:

Missense mutations  

CCG codes for Proline amino acid

• Mutation in first nucleotide codes for  

 UCG specifically encodes Serine

 ACG specifically encodes Threonine  

 GCG specifically encodes Alanine                              

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• Mutation in second nucleotide specify for coding

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 CAG specifically encodes Glutamine  

 CGG specifically encodes Arginine

• Mutation in Third Nucleotide will not result in missense mutation because any point mutation in third nucleotide of codon will encode same amino acid i.e Proline.  

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3 years ago
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How are predation and competition essential for maintaining a thriving ecosystem?
Elis [28]

Answer:

<u>Both of these are necessary to maintain overpopulation of any species in an ecosystem.</u>

Explanation:

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  • Since an ecosystem is made up of many organisms along with the natural resources present in it.

  • This gives rise to different species competing against one another.

  • If one of these species is at a certain advantage, their population will rise uncontrollably hence to prevent this a predator plays a major role.

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