<span>Cretaceous
</span>Angiosperms evolved during the late Cretaceous<span> Period, about 125-100 million years ago.</span>
Answer:
The esophagus and the stomach.
Explanation:
There are many parts to the digestive system, but these are the most common answers.
Answer:
I would say lysosomes would be like the janitors, since lysosomes typically clean up waste within the cell
Explanation:
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.
