Answer: The fertilized ovum, now called a zygote, is ready for the first mitotic cell division.
<span>Thoracentesis is not an approved procedure to inflate a collapsed lung. Thoracentesis, also called thoracocentesis and known as a pleural tap is used in the medical field as a procedure to remove air or fluid from the pleural space in the lung for diagnostic or therapeutic purposes.</span>
Answer:
A band - light central region of sarcomere.
Explanation:
Sarcomere is the basic structural unit of the skeletal muscles. These sarcomere shows striations ( light and dark bands) when veiw under the microscope.
A band or anisotropic band is the dark region of sarcomere. A band consists of both thick and thin filaments of actin and myosin proteins. The A band has the ability to refract light and appears dark.
Thus, the correct answer is option (D).
Answer:
there are 4 major classes of biological macromolecules
