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nirvana33 [79]
3 years ago
6

What is true about cardiac muscle structure ?

Biology
1 answer:
laiz [17]3 years ago
4 0

Answer:Cardiac muscle is striated muscle that is present only in the heart

Explanation:

Cardiac muscle tissue is a specialized, organized type of tissue that only exists in the heart. It is responsible for keeping the heart pumping and blood circulating around the body. Cardiac muscle tissue, or myocardium, contains cells that expand and contract in response to electrical impulses from the nervous system.

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Which statement supports the main ideas of the law of conservation of mass?
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Answer: The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

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3 years ago
How do you delete a question on this? lol plelase help
Ne4ueva [31]

Answer:

The tRNA anticodons pair with the complementary mRNA codons at the ribosomes. The individual tRNA molecule carries an amino acid according to its specific code. When tRNA releases its amino acid, peptide bonds form between the amino acids. After each tRNA releases its amino acid, it is free to pick up another amino acid in the cytoplasm.

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Within a eukaryotic cell, aerobic cellular respiration occurs within the _____. mitochondria nucleus ribosomes
kogti [31]
Cellular respiration takes place in the mitochondria
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Why do insect pests become resistant so readily to the pesticides used for control?
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Answer:

A, C, F

Explanation:

I honestly am not comepletely sure about thsi one, but consider this.

8 0
3 years ago
The difference between an aldose sugar and a ketose sugar is ________. Group of answer choices the ring form and the linear chai
zhuklara [117]

Answer: position of the carbonyl carbon

Explanation:

In the linear structure of sugars having an aldehyde group, are called aldoses, and sugars having a keto group are called ketoses.

Like adehydes H-C=O the carbonyl carbon is the first/last in the chain it is bounded to Hydrogen, double bounded to oxygen and a single bond to the chain. An aldose linear sugar like D-glucose have the carbonyl carbon as it first carbon.

But ketones R-COR the carbonyl carbon is in between the chain, it is bounded to two carbons on both sides. Like D-fructose the keto carbon is the second carbon.

In a open ring structure the 1st carbon, adehyde group is condensed with the hydroxy group (OH) of the 5th carbon forming a ring. The first carbon is now bound to the chain, Hydrogen, OH and oxygen which forms the ring.

In the keto open ring structure of D-fructose, the second carbon(keto group) is condensed with the OH of the 5th carbon

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3 years ago
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