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tiny-mole [99]
3 years ago
13

What is the role of acetylcholine in a skeletal muscle contraction

Biology
1 answer:
LenaWriter [7]3 years ago
6 0

plays the role in skeletal muscle movement

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Analyzing the following tree, prove the relationship between ray-finned fish and crocodiles using the characteristics given belo
7nadin3 [17]

Answer:

The Ray- Finned Fish has a bony skeleton just like crocodiles. Crocodiles evolved more and adapted to their environment. Along the way Crocodiles grew to have four limbs, were born from an amniotic egg, and then their eggs also have shells, unlike the Ray-finned fish. Therefore the three characteristics they do NOT have in common are: Four Limbs, Amniotic Egg, and Eggs with Shells. The one trait they do have in common is Bony Skeletons. They also both have vertebrae.

7 0
3 years ago
In functional genomics, biologists use sequence information to identify the functions of various parts of genomes. Which of the
k0ka [10]

Answer:

E: specific proteins that are made by a cell under particular conditions

Explanation:

It is only specific proteins that are made by a cell under particular conditions can't be obtained from a genome sequence. In order to get information about this protein we need proteomics.

Genome sequence gives us an idea of nucleotide sequence of DNA and RNA molecules not proteins. Regulatory sequences such as promoters, enhancers, insulators, UTRs etc. all are a part of genome, rRNA genes are part of genome sequence too, non coding repetitive repeats and intron regions are also a part of genome sequence itself so option A, B & D are incorrect. Option C is also incorrect because amino acid sequence of  proteins can also be determined by genome sequences because each nucleotide triplet which is known as codon refers to a specific amino acid. Option E is correct because by genome sequence we can easily get to know about amino acid sequence but not about specific protein which is synthesized at a particular condition.

6 0
3 years ago
What criteria is used to determine how organisms can be divided in a community?
Mkey [24]
Organisms are classified and divided in a community based on the modern classification system that was published by Carolous Linnaeus in the 18th century.

This criteria is also known as the Linnean system of classification, where the organisms are classified according to the following: Species, Genus, Family, Order, Class, Phylum and Kingdom.
3 0
3 years ago
When positively charged particles were radiated onto a gold atom, most of the particles went straight past. What is most likely
lakkis [162]

Answer:

B

empty part

Explanation:

btw its chemistry question

5 0
3 years ago
Read 2 more answers
Cells that are rapidly undergoing mitosis constantly repair and renew the lining of the pharynx and the esophagus, which is part
SIZIF [17.4K]

Answer:

mucosa

Explanation:

The pharynx and esophagus possesss all of the basic histological layers of the gastrtointestinal tract (GI tract). The layers are:

  1. mucosa - layer closer to lumen which cocnsists of epithelium, lamina propria and muscularis mucosae
  2. submucosa-layer of loose connective tissue with vessels
  3. muscularis propria-layer of inner circular and outer longitudinal muscular layers
  4. adventia - layer of  loose connective tissue
4 0
3 years ago
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