Eukaryotes contain linear chromosomes and therefore require telomerase to prevent loss of the ends of the chromosomes
<span>LD
means lethal dose. LD50 is the amount of a material, administered at once to
cause the death of half (50%) of a group of test organisms. A test which shows that LD50 of a certain
chemical is 20 mg per kg means that 20 milligrams of that chemical for every 1
kilogram body weight of the test animal when administered in one dose, causes
the death of 50% of the test group.</span>
In a chemical reaction, a reactant bonds to an enzyme at a region known as the Active Site.
Answer: true
Explanation: in able to do this it has to transport proteins that can span the cell membrane and allowi the permeable membrane to regulate which molecules enter and leave a cell.
Question answered by:
(jacemorris04)
The Body Structures of some species support Darwin's Theories because of fossil records, similarities in DNA and protein sequences between organisms, homologous <span>and vestigial body structures, and similarities in early development. Also, they have similar limbs.
I hope this helps. C:</span>
