The answer is (A) Mitochondria have their own DNA molecules, separate from the rest of the cell's DNA.
The endosymbiotic hypothesis concerns with the presence of two special organelles, mitochondria and chloroplast within the eukaryotic cell. These two organelles have their own set of DNA that is different from the nuclear DNA of the eukaryotic cell. It is believed that a primordial eukaryotic cell was in a symbiotic relationship with mitochondria-like bacterium. The primordial cell eventually engulfed the mitochondria-like bacterium for ATP production to power itself.
Under the dissecting microscope I was able to view the surfaces of specimens such as a feather, insect, and leaf.
Under the compound microscope I was able to view a leaf, blood, and algae. I was able to observe the surface of the specimens in greater detail then I was able to view the surfaces under the dissecting microscope. For an example under the compound light microscope I was able to view the leaves surface which contained multiple lines that intertwined into each other and rectangular chambers of green dots. But under the dissecting microscope I was only able to view the surface of the leaf which consisted of thin white cracks in the leaf.
Under the scanning electron I was able to view the internal structure of the following specimens: a leaf, blood, and algae.
Under the transmission electron I was able to view a more in depth internal structure of the following specimens:a leaf, blood, and algae. I was able to observe the intern
al structures of the specimens in greater detail then I was able to view the internal structures under the scanning microscope. For an example under the TEM I was able to study the internal structure of a leaf which consisted of long thick and thin black and gray lines coated with black rectangles and tiny dots littering he perimeter of what looks to be the internal structure of the leaf. But with the SEM I was only able to view the first layer of the leaf's internal structure which consisted of mushroom like figures surrounded be compound and single molecules.
Answer:
an ANTIGEN
Explanation:
a foreign substance that invades your body is called an <u>A</u><u>N</u><u>T</u><u>I</u><u>G</u><u>E</u><u>N</u>. 8. When your body detects an antigen, antibodies are made and lock onto it. Once an antigen is recognized, your immune system can remember it the next time and protect you from getting sick again.
Answer:
The correct answer is option C. "It binds to DNA in a sequence-specific manner".
Explanation:
It is not true that histones bind to DNA in a sequence-specific manner. Histones and DNA have nonspecific bindings (occuring at any DNA sequence) given mostly by electrostatic interactions. DNA is a macromolecule that is highly negatively charged because of its phosphate residues, while histones are proteins that are highly positively charged because of its high content of positively charged amino acids. In consequence, the binding of histones and DNA occurs mostly in a nonspecific fashion given by electrostatic interactions.
