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2 years ago

Why are different leads are used to measure the ECG

Biology

1 answer:

Levart [38]2 years ago

3 0

Answer:

The 12-lead ECG gives a tracing from 12 different “electrical positions” of the heart. Each lead is meant to pick up electrical activity from a different position on the heart muscle. This allows an experienced interpreter to see the heart from many different angles.

Explanation:

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Describe the positive and negative interactions that affect populations in the tundra ecosystem

SCORPION-xisa [38]

Living organisms in any biome interact through a variety of relationships. Organisms compete for food, water, and other resources. Predators hunt their prey. Some organisms coexist in mutually beneficial relationships (symbiosis), while others harm organisms for their own benefit (parasitism). Still others benefit from a relationship that neither helps nor harms the other organism (commensalism).

Animals found in the Arctic tundra include herbivorous mammals (lemmings, voles, caribou, arctic hares, and squirrels), carnivorous mammals (arctic foxes, wolves, and polar bears), fish (cod, flatfish, salmon, and trout), insects (mosquitoes, flies, moths, grasshoppers, and blackflies), and birds (ravens, snow buntings, falcons, loons, sandpipers, terns, and gulls). Reptiles and amphibians are absent because of the extremely cold temperatures. While many of the mammals have adaptations that enable them to survive the long cold winters and to breed and raise young quickly during the short summers, most birds and some mammals migrate south during the winter

3 0

3 years ago

Read 2 more answers

Hypothesis:

AleksandrR [38]

Answer:

Objective(s):

In your own words, what was the purpose of this lab?

In this lab report, the purpose is that hamsters carry traits fro parents.

Hypothesis:

In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

Test One: If I breed a short fur, FF female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

All short fur

Test Two: If I breed a short fur, Ff female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

Some short and some long

Test Three: If I breed a long fur, ff female with a long fur, ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

All long fur

Procedure:

The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable) and the outcome variable (dependent variable) for this investigation.

Remember, the test variable is what is changing in this investigation. The outcome variable is what you are measuring in this investigation.

Test variable (independent variable): Outcome variable (dependent variable):

Data:

Record the data from each trial in the data chart below. Be sure to fill in the chart completely.

Test One

Parent 1: FF

Parent 2: Ff

Phenotype ratio:

____0____ :

___4_____

short fur :

long fur

Test Two

Parent 1: Ff

Parent 2: Ff

Phenotype ratio:

1 :

____3____

short fur :

long fur

Test Three

Parent 1: ff

Parent 2: ff

Phenotype ratio:

4 :

___0_____

short fur :

long fur

Conclusion:

Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences.

1. Which genotype(s) and phenotype for fur length are dominant? FF

2. Which genotype(s) and phenotype for fur length are recessive? ff

3. If you have a hamster with short fur, what possible genotypes could the hamster have? It would probably be Ff or a ff

4. If you have a hamster with long fur, what possible genotypes could the hamster have? It would be Ff or an FF

5. Did your data support your hypotheses? Use evidence to support your answer for each test.

◦ Test One:? ◦ Test Two:?

◦ Test Three:?

6. Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents.?

4 0

3 years ago

kaheart [24]

Answer:

Explanation:

Water washed disease are diseased that occur due to lack of water for proper personal use.

Often common in areas with predominantly poor people.

Water borne diseases are disease that are are transmitted by pathogens and micro organisms in water. Bacteria and protozoan are major carriers of water borne disease. When exposes to contaminated water one could get the disease from there.

Both water borne and water washed diseased are characterized by pathogens and micro organism.

They both result in serious medical condition that requires treatment via drug administration.

Lack of proper hygiene can result in both water washed and water borne disease.

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2 years ago

pepsin is found in the stomach. Salivary amylase is found in the mouth. And arginase is found in the liver. What does the graph

EastWind [94]

The stomach breaks down food , so it has the most acidic substance

4 0

3 years ago

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A group on the periodic table is best described as a