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spin [16.1K]
3 years ago
10

Muscles move tendons attached to bone by performing an action called _______.

Biology
2 answers:
torisob [31]3 years ago
5 0
Movement I’m pretty sure
kotegsom [21]3 years ago
4 0

Answer:

contractions

2. actin

3. tendons

4. epidermis

5 dermis

6. acne

Explanation: 7. A nerve signal from the brain arrives at the intersection of the nerve and muscle cells and releases acetylcholine from the neuron. This triggers chemical changes in the muscle cell involving ions, including Ca2+. Calcium triggers the thick filaments, made of myosin, to attach to the thin filaments, made of actin, in the muscle cell, and the myosin pulls the actin toward the center of the muscle cell. ATP causes the release of the actin fibers, allowing the muscle to relax and the process to begin again.

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According to this evolutionary tree, the archaea and eukaryotes last shared a common ancestor ________.
Lostsunrise [7]

Answer:

2.5 billion years ago.

Explanation:

Evolutionary tree is constructed to understand the phylogeny and evolution relationship of the organism. The evolutionary tree is constructed by looking at the molecular and physiology of the different organisms.

The eukaryotes are more closely related to the archaea. Depending on the biochamical and molecular evidence is has been found that they share the common ancestor almost 2.5 billion years ago. This can also be deduced by the fossil evidence as well.

Thus, the answer is 2.5 billion years ago.  

5 0
2 years ago
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agasfer [191]

Answer:

The shelves or die and will not be able to produce sugars. Blocking electron flow prevents the formation of the proton gradient required to produce the ATP used for sugar production.

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2 years ago
How are the genes split up in sexual reproduction? Use Mendel's laws in your<br> answer.
Murrr4er [49]

Answer:

https://hobart.k12.in.us/jkousen/Biology/mendel.htm

Explanation:

This site will tell you what you need to know.

5 0
3 years ago
Name and describe one of the three conditions Dr. Natterson-Horowitz mentions that have been well-studies by veterinarians, who
katrin [286]
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Please hurry!!
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