Answer:
d. Cnidarians and comb jellies, only two germ layers are formed
Explanation:
Diploplastic animals are the animals which do not have three germs layer so rather than three they are made up of only two germ layer which is ectoderm and endoderm. Mesoderm is absent in them so they do not have true coelom or body cavity.
So as cnidarians and comb jellies are formed from only two germ layers that are endoderm and endoderm, therefore, they are called diploblastic. Fish, amphibians, reptiles, and mammals are triploblastic animals. So the correct answer is d.
Answer:
Option A, a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract
Explanation:
The complete question is
If you were working for a pharmaceutical company as part of a drug discovery team, which of these enzyme inhibitors would you suggest as a productive avenue for drug development?
a) a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract
b) a drug to treat diabetes that irreversibly inhibits an enzyme in the metabolic pathway to synthesize glucose
c) a compound that acts as a competitive inhibitor for a digestive enzyme produced only in the presence of certain foods
d) a compound that inhibits enzymes by significantly changing the ph throughout the body
Solution
Productive avenue of a drug simply means producing an drug that not only treats the main disease or disorder but also functions to inhibit the causative agent activity. In case of option A, both the objectives of producing drug are met and hence it is the right choice.
High blood pressure usually affects the blood vessels by narrowing them and in severe cases may rupture them. If a drug as stated in option A is produced, it will not only rectify the effects of high blood pressure but will also prevent the blood vessels from narrowing by inhibiting the activity of enzymes responsible for producing chemical that leads to blood vessel contraction.
Hence, option A is correct
Answer:
C
Explanation:
Ammonia is toxic to the body. Animals that live in water excrete their waste in ammonia (aqueous) form because it is less toxic when diluted. However, land animals need to convert the ammonia to a less toxic product such as urea before excretion. Ammonia is formed through deamination of amino acid.
<span>USGS is gathering information in the Arctic Ocean to study acidification and identify a baseline of information about the ocean's chemistry. This chemistry is expected to change due to decreases in the amount of summer sea ice.</span>
