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lawyer [7]
3 years ago
6

what type of muscle is found only in the heart. It is A) smooth muscle. B) cardiac muscle. C) skeletal muscle. D) voluntary musc

le.
Biology
1 answer:
Studentka2010 [4]3 years ago
5 0
Cardiac muscle is found in only the heart because the heart is also called cardiac and said to have cardiac muscle.the answer is b. hope this helps :) 
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PLEASE HURRY!!!!
galina1969 [7]
Answer- Homologous (hope this helps)
3 0
3 years ago
A person breaks a bone and has it set and put in a cast, but it does not heal. What would be the best thing for the doctor to in
notsponge [240]

Answer:

The osteoblasts, which should have been building the new bone

Explanation:

Bones are the one of the types of connective tissues and have hard extracellular matrix. Osteoblasts are the cells that serve in formation of extracellular matrix of bones as these cells secrete collagen fibers and inorganic salts present in the matrix of bone. Hence, if a bone is not able to heal after fracture, osteoblast cells should be checked for their activity.

6 0
3 years ago
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Explain how the digestive tract of different invertebrates affects the size of the organisms they eat.
AlexFokin [52]

My answer will be because these characteristics intervene in the capture and assimilation of the food, having 4 general food behaviors: (1) detritivores, consume a lot of material from the bottom of the water source, (2) herbivores, who consume mostly plant components (filamentous algae and higher plants); (3) periphyton consumers, who are characterized by feeding on microalgae and microinvertebrates and (4) omnivores, in which they indistinctly feed on plant material as an animal of different origin.

8 0
3 years ago
A rock that forms when magma hardens beneath Earth’s surface is called an _____. intrusive igneous rock extrusive metamorphic ro
Karo-lina-s [1.5K]
A rock that forms when magma hardens beneath Earth's surface is called an intrusive igneous rock.
6 0
3 years ago
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What levels of protein structure would be affected if all hydrogen bonding interactions were prevented? check all that apply?
fgiga [73]

The proteins exhibit four levels of organization:  

1. Primary structure: It refers to a sequence of amino acids join together by the peptide bonds to produce a polypeptide chain.  

2. Secondary structure: It is a localized twisting of the polypeptide chain by producing a hydrogen bond. Two types are formed, that is, the alpha helix and beta pleated sheet.  

3. Tertiary structure: It refers to the three-dimensional composition of a polypeptide chain. The folding is not regular as it is in secondary composition. It produces ionic bonds, hydrophobic interactions, disulfide bond, and hydrogen bond amongst the polypeptide chains.  

4. Quaternary structure: It comprises an amalgamation of two or more polypeptide chains that functions as a single functional unit. The bonds are identical as in tertiary composition.  

Thus, the levels of secondary, tertiary, and quaternary protein structure would get affected if all the hydrogen bonding associations were inhibited.  


6 0
3 years ago
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