<span>Marine mammals can be classified as animal that lives
partially or wholly on coastal waters or oceans from survival while fish can be
classified as a cold blooded gill bearing, egg producing species. However,
whales survive by the development of echolacation, modified lungs, thick layers
of blubber and lager arteries among
other things to ensure their prosperity and survival.</span>
Answer:
Hormones act only on cells not structures.
Explanation:
Hormones act only on cells and they do not act on other structures because there are specific cells have receptors for that particular hormone. Some hormones bind itself to the receptors on the surface of target cells whereas other hormones enter the cells and bind itself to the receptors present in the cytoplasm or nucleus of the cell.
False. Energy is only released when chemical bonds are formed.
Answer:
Option C
Conflict within genomes, such as segregation distorter alleles.
Explanation:
Intergenomic conflict can be seen as a type of conflict that occurs at a genetic level.
This type of conflict is the struggle for survival and reproduction that happens between the genes of an organism. A gene usually cheats the other genes in the transfer of genetic material during reproduction, As a result, they produce an organism with the perfect conditions that will help their kind of genes to reproduce freely.
Evolutionary biologists are more concerned with this kind of conflict that goes on within organisms, while social scientists are concerned with the conflicts that are between groups of individuals living together.
Answer: No
Explanation:
Carbonic anhydrase (CA; carbonate hydro-lyase) is a zinc-containing enzyme that catalyzes the reversible hydration of carbon dioxide: CO2+ H2O<-->HCO3(-)+H+. The enzyme is the target for drugs, such as acetazolamide, methazolamide, and dichlorphenamide, for the treatment of glaucoma.
The zinc ion is located in a cone-shaped cavity and coordinated to three histidyl residues and a solvent molecule. Inhibitors bind at or near the metal center guided by a hydrogen-bonded system comprising Glu-106 and Thr-199. The catalytic mechanism of CA II has been studied in particular detail. It involves an attack of zinc-bound OH- on a CO2 molecule loosely bound in a hydrophobic pocket. The resulting zinc-coordinated HCO3- ion is displaced from the metal ion by H2O. The rate-limiting step is an intramolecular proton transfer from the zinc-bound water molecule to His-64, which serves as a proton shuttle between the metal center and buffer molecules in the reaction medium.
