Answer:
B
Explanation:
"Energy is generated in a red dwarf in the same way that it is in the Sun, namely through the fusion of hydrogen into helium. ... So long is the process, in fact, that the lifespan of a red dwarf can be far longer than the expected age of the universe, thought to be about 14 billion years."
<span>Observing that fibroblasts grew better in cell culture when blood serum was added to the growth medium instead of blood plasma. Thus proving that there was a substance in serum that made it easier for fibroblasts to grow.</span>
Lipid is the major component of cell membrane ...
Answer:
Synthesis
Explanation:
A synthesis chemical reaction is where two simpler substances form together to create a more complex product.
The reactants can be either a single element or a compound, but the product is always a compound.
Since Mg and O2 reacted to create MgO, a compound, this represents a synthesis reaction.
Answer:
a. Naked dna
f. nucleosome
e. solenoid
g. loop domain
d. chromatid
c. chromosomes
b. metaphase
Explanation:
The naked DNA consists of the DNA molecule not associated with proteins.
A nucleosome is an octamer of histone proteins (i.e., dimers of H2A, H2B, H3, H4) associated with DNA.
A solenoid is a chromatin fiber consisting of 30 nanometers (nm), it represents the secondary structure of the chromatin.
The chromatin fibers are organized into loops (300 nm) that represent the tertiary structure of the chromatin. These loops enable to package chromosome segments consisting of about 100 kilobases (kb).
The sister chromatids are two identical DNA-based structures that remain joined together by the centromere to form a single chromosome (700 nm).
