Out of the following give choices;
a. All DNA strands
contained only the heavy nitrogen isotope.
b. Half of the DNA strands contained only the light nitrogen
isotope.
c. All DNA strands contained both heavy and light nitrogen
isotopes.
d. All DNA strands contained only the lighter nitrogen
isotope.
The answer is b. Meselson–Stahl experiment demonstrated the semi-conservative model of DNA replication.
When DNA is replicated, one strand of the new double
helix strand is the parent's strand while the other is the newly synthesized
one. This made the semiconservative model stand out over the other two, dispersive
and conservative models.
Answer:
It is voluntary and striated.
Explanation:
There are three types of muscle tissues: skeletal muscle, cardiac muscle and smooth muscle. Skeletal muscle is a tissue that is under the control of the voluntary nervous system and attached to the bones by tendons. In the microscope, striated muscle cells have a stripe-like appearance, it is for that reason that they are called striated. Moreover, both cardiac muscle tissue and smooth muscle tissues are under involuntary control.
