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masya89 [10]
3 years ago
15

Which of the following statements is true? Viruses do not cause communicable diseases. Vaccines are 100 percent effective in pre

venting disease. Communicable disease can be spread by inanimate objects, such as doorknobs. The best way to prevent catching a cold is to get yearly vaccinations.
Biology
2 answers:
Sergeeva-Olga [200]3 years ago
5 0
Diseases can be spread from doorknobs
Colt1911 [192]3 years ago
3 0

Answer is Communicable disease can be spread by inanimate objects, such as doorknobs.

The causal organisms of some of the communicable diseases are bacteria and viruses. The communicable diseases such as common cough and cold can be transmitted to a healthy person by indirect contact with contaminated substances such as food, air, soil, feces, equipment, objects including doorknobs, remote controller, etc.

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Why is there more creatine kinase in dmd muscles compared to average muscles
Nastasia [14]

Answer:

Explanation:

Almost everyone with a neuromuscular disorder has had, or will have, a creatine kinase test. But what exactly is creatine kinase (CK), and why are its levels measured in neuromuscular diseases?

CK, also known as phosphocreatine kinase, or CPK, is a type of protein called an enzyme. It catalyzes, or "encourages," a biochemical reaction to occur. The normal function of CK in our cells is to add a phosphate group to creatine, turning it into the high-energy molecule phosphocreatine. Phosphocreatine is burned as a quick source of energy by our cells.

However, the normal function of CK isn't as relevant, in this case, as what happens to CK when muscle is damaged. During the process of muscle degeneration, muscle cells break open and their contents find their way into the bloodstream. Because most of the CK in the body normally exists in muscle, a rise in the amount of CK in the blood indicates that muscle damage has occurred, or is occurring.

To measure CK levels, a blood sample is taken and separated into fractions that contain cells and a fraction that doesn't — the serum. The amount of CK in the serum is reported in units (U) of enzyme activity per liter (L) of serum. In a healthy adult, the serum CK level varies with a number of factors (gender, race and activity), but normal range is 22 to 198 U/L (units per liter).

Higher amounts of serum CK can indicate muscle damage due to chronic disease or acute muscle injury. For this reason, if you're scheduled to have blood drawn for a CK test to diagnose a potential muscle disorder, you should limit your exercise to normal activities before the test.

7 0
3 years ago
Thomas's biological mother and father are both gifted athletes. He was adopted by a couple who had no interest in him being invo
guajiro [1.7K]

Answer:phenotype

Explanation:

Phenotype is a physical appearance or biochemical characteristics which is influenced both by its genotypes and the environment. In other words,its a particular trait that is expressed, e.g. height,color,behaviour etc.

In the above mentioned case,Thomas inherited his parents's genotype(atheletic),but it was not expressed because of his adoptive parents' disinterest in sports.

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Answer: I think its centriole

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BabaBlast [244]

Answer: they drop their leaves and go into dormancy

Explanation:

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