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Somatic cells derived from a single-celled zygote divide by which process?
Somatic cells derived from a single-celled zygote divide through the process of mitosis. Mitosis is a type of cell division that results in two daughter cells with the same number of chromosomes as the parent cell. This process is responsible for growth, repair, and maintenance of multicellular organisms.
What is mesoblasts?
Mesoblasts are a type of embryonic stem cell that give rise to the mesoderm, one of the three primary germ layers in early development. Mesoderm gives rise to various tissues and structures in the body, including muscle, bone, cartilage, and blood vessels. Mesoblasts are important for tissue development and regeneration.
What includes the phases G1 S and G2?
The phases G1, S, and G2 are part of the cell cycle in which a cell grows (G1), duplicates its genetic material (S), and prepares for cell division (G2) before dividing into two daughter cells through the process of mitosis.
What would happen if all the genes in a cell were always active?
If all genes in a cell were always active, it could lead to chaos and dysfunction in the cell. Gene expression needs to be tightly regulated to ensure that the right genes are active at the right time and in the right amount. Without proper regulation, the cell might not be able to function correctly, leading to potential problems such as uncontrolled growth or cell death.
How do single cell organisms reproduce?
They reproduce by cell division. When the time comes for the cell to reproduce, it creates a duplicate set of DNA which then splits from the original - creating an exact copy.
What type of muscle cell is short with a centrally located nucleus?
The type of muscle cell that is short with a centrally located nucleus is called a smooth muscle cell. These cells are non-striated and involuntary, meaning they function without conscious control. Smooth muscle is found in the walls of hollow organs, such as the intestines and blood vessels, and is responsible for various involuntary movements, such as peristalsis and vasodilation.
What is the specific structure within a muscle cell that contains the sarcomere I band and is responsible for muscle contraction?
The specific structure within a muscle cell that contains the sarcomere I band and is responsible for muscle contraction is called the myofibril.
What type of muscle cell lacks striations?
Smooth muscle cells lack striations and are characterized by their non-striped appearance. They are found in the walls of hollow organs such as the intestines, blood vessels, and the bladder. Smooth muscle is involuntary, meaning it operates without conscious control, and is responsible for various functions like peristalsis and regulating blood flow.
Which pump is responsible for muscle contraction through depolarization of muscle cell membrane?
Ca2+
Which organelles are responsible for performing aerobic respiration?
Mitochondria are the organelles responsible for performing aerobic respiration in eukaryotic cells. They produce ATP by breaking down glucose in the presence of oxygen, thus providing energy for the cell.
What muscle cell protein acts as an ATPase enzyme?
The muscle cell protein that acts as an ATPase enzyme is myosin. Myosin is responsible for converting chemical energy from ATP into mechanical energy during muscle contraction.
What type of muscle cell lacks transverse tubules has a single nucleus and is under involuntary control?
The type of muscle cell that lacks transverse tubules, has a single nucleus, and is under involuntary control is smooth muscle. Smooth muscle cells are found in the walls of hollow organs, such as the intestines and blood vessels, and they facilitate involuntary movements like peristalsis and vasoconstriction. Unlike skeletal muscle, smooth muscle does not have a striated appearance and contracts slowly and rhythmically.
Which organ system is the muscle cell below most likely a part of?
The muscle cell is most likely part of the muscular system. It is responsible for movement, posture, and production of heat.
What muscle cell type has non striated and involuntary features?
The muscle cell type that is non-striated and involuntary is smooth muscle. Smooth muscle cells are found in the walls of hollow organs such as the intestines, blood vessels, and the bladder. Unlike skeletal muscle, which is striated and under voluntary control, smooth muscle operates autonomously, regulated by the autonomic nervous system and hormones. This allows for functions like peristalsis and blood vessel regulation without conscious effort.
What is the specific function of the sarcomere H band within the structure of a muscle cell?
The specific function of the sarcomere H band within the structure of a muscle cell is to contain only thick filaments made of myosin, which are responsible for muscle contraction.
Is the smooth muscle cell a multicellular organism or a unicellular?
Smooth muscle cells are unicellular organisms, as they are individual cells that make up the smooth muscle tissue found in various organs of the body. They function as part of a larger tissue but do not exist as multicellular organisms on their own. Each smooth muscle cell is specialized for contraction and helps facilitate various involuntary movements within the body, such as peristalsis in the digestive tract.
What is the plasma membrane of the muscle fiber?
The plasma membrane of a muscle fiber is called the sarcolemma. It surrounds the muscle cell and is responsible for controlling the passage of substances in and out of the cell, as well as transmitting signals for muscle contraction. The sarcolemma is essential for maintaining the integrity and function of the muscle fiber.
