No, the heart muscles do not have the same structure as the armmuscles.
The specialized muscle tissues which form the heart are called the cardiacmuscles. The cardiac muscle tissues are unique in the sense that they are only present in the heart and nowhere else in the body.
The specialized cells that form the cardiac muscle tissues are called cardiomyocytes.
Cardiomyocytes are also muscle cells and thus like other muscle cells, they rely on actin and myosin for their contractions. The cardiomyocytes have a high number of mitochondria as the heart muscles need a high amount of energy for their functioning.
The cardiac muscle fibers are thick and branched structures, specialized in contracting and pumping the blood.
Purkinjefibers are a kind of specialized cells present along with the cardiac muscles that help in the transmission of electric impulses to the heart and from the heart.
Therefore, the heartmuscles do not have the same structure as the arm muscles.
Read more about cardiac muscles, here
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DNA in the nucleus of eukaryotic cells is collected into a chromatin.
A chromatin is a complex of nucleic acids (DNA or RNA) and proteins called histones which condense to form a chromosome during cell division.
In eukaryotic cells, it is found within the cell nucleus while in prokaryotes, it is found inside the nucleoid .
Its functions are;
1. to package DNA into a smaller volume to fit in the cell.
2. strengthen the DNA to allow mitosis and meiosis.
3. acts as a mechanism to control expression
The chromatin is easily recognized through staining. Its name literally means "colored material."
b. either parent
c. the father
d. the mother
Answer: Option A) both parents
Explanation:
Every child receives a copy of gene each from both parents. Once, a baby receives two copies of diseased-gene from both parents who are carriers, the baby automatically get the disease
Answer:
Answer is A.
Explanation:
Here, one copy is inherited from their mother (through the egg) and the other from their father (through the sperm).
The answer is:
D) A patient who is Rh– can receive only Rh– blood.
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than others. (SB1a)
A. The cells divide more frequently.
B. The cells use more energy.
C. The cells store more nutrients.
D. The cells degrade more proteins.
Some cells have more mitochondria because the cells use more energy. The correct option is B.
Mitochondria are the powerhouse of the cell. It is a long cylindrical organelle. Some cells contain more mitochondria than others because they require more energy. The mitochondria store energy for the function of the cell.
So, for example, the muscle contains a lot of mitochondria, as does the liver, the kidney, and, to some extent, the brain, which runs on the energy that those mitochondria make.
Depending on the function of thecell, several mitochondria are frequently found in one cell. Mitochondria, like other organelles, are found in the cytoplasm of cells.
Therefore, the correct option is B. The cells use more energy.
To learn more about mitochondria, refer to the link:
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✓ B) The cells use more energy.
Some cells such as human nerve and muscle cells.
A: Saturated fats :)