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12345 [234]
3 years ago
5

The sliding filament model is our best explanation of how a skeletal muscle shortens. Based on your knowledge of the structure o

f the sarcomere and the changes that occur in the sarcomere with muscle contraction, explain the evidence that supports the sliding filament model.

Biology
1 answer:
Veseljchak [2.6K]3 years ago
7 0

A sacromere is a segment between two adjacent Z discs and are essential for the striated structure of the cardiac and skeletal muscles.

<u>Explanation:</u>

The Z disc is surrounded by the I band made of thin filament called actin. The I band is followed by the A band made up of thick filament called myosin. When the muscles contract the actin and the myosin become superimposed/overlapped.

The sliding filament model explains the contraction of the sacromere in which the Z discs move closer due to the overlapping of the thin and thick filaments. Thus the I band moves close to the A band which remain the same length as shown in figure.

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How will the diversity of species differ between early and late succesion areas?
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You could argue that in early succession areas species may have not been adapted or evolved. In Darwin's theory, life began in a shallow, warm pond. If that is the case, species would then venture deeper when their area they are in is suitable and having success
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I’m pretty sure it’s the first option, if not I am so sorry.
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In the family tree below, people with the recessive trait of attached earlobes
madam [21]

Answer:

C. It is a male with atleast one dominant allele

Explanation:

In the given pedigree, the two normal parents of the generation I have one daughter with the attached earlobe. Since the trait is recessive, the daughter should be homozygous recessive to express the trait. The genotype of the daughter (shaded circle in generation II) is "aa". To have a daughter with "aa" genotype, both the parents should have one copy of "a" allele. So, the genotype of both parents is "Aa".

In generation II, individual A is non-shaded square. Squares represent males in a pedigree. Since its not shaded, it does not have attached earlobe. Both the parents are heterozygous dominant for attached earlobes (Aa x Aa = 1/4 AA : 1/2 Aa : 1/4 aa). The genotype of this individual may be AA or Aa.

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3 years ago
Which of the following denotes the divisions of the geologic time scale in correct order of decreasing lengths of time beginning
Stels [109]

Answer:

d. eon, era, period, epoch

Explanation:

The geological time scale has been made so that the scientists can have a practical system about the classification of geological time, thus everything that has happened throughout it. The geological time unites have been defined in accordance with important events that have happened, thus marking their end or beginning. These events can be mass extinctions, catastrophes, climate patterns, domination of certain species etc. The longest of these time units is the eon, lasting for more than half a billion years, and up to 2 billion years. The era comes as the second longest time unit, lasting for several hundred million years. The period lasts for several tens of million years, and the epoch is the smallest unit, lasting for few million years, or several hundred thousand years.

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3 years ago
Which foodborne illness is best prevented by controlling time and temperature?
soldi70 [24.7K]

While cooked rice meals are associated with the vomiting ailment, cooked veggies, animal products, and milk are frequently linked to the diarrhea ailment (rice pudding and fried rice). The easiest way to avoid it is to regulate the temperature and time.

<h3>What is meant by "foodborne disease"?</h3>

Foodborne illness is brought on by consuming contaminated foods or beverages. Foodborne infections can result from a wide variety of pathogens or disease-causing germs contaminating foods. Foodborne illnesses are typically caused by bacterial, viral, and parasite infections.

<h3>What are the 5 major foodborne illnesses?</h3>
  • Norovirus.
  • Salmonella.
  • Clostridium perfringens.
  • Campylobacter.
  • Staphylococcus aureus

<h3>What brings about food-borne illness?</h3>

Foodborne illness causes

Bacteria, viruses, and parasites are biological risks. Most foodborne infections are caused by bacteria and viruses. The greatest danger to food safety is posed by biological risks. They may be a result of improper handling (such as using excessive time or temperature) or inherent in the product.

To learn more about foodborne illnesses visit:

brainly.com/question/24477516

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