Answer: All of the listed responses are correct.
___________________________________
>increases the oceanic concentration of carbonic acid
>reduces the carbonate ion concentration in the oceans and threatens calcifying organisms in marine ecosystems
>increases the oceans' acidity and lowers pH
>increases the hydrogen ion concentration in the oceans but decreases the carbonate ion concentration and threatens the livability of the oceans for calcifying organisms
Explanation:
<span>Arrange the following five events in an order that explains the mass flow of materials in the phloem.
1. Water diffuses into the sieve tubes.
2. Leaf cells produce sugar by photosynthesis.
3. Solutes are actively transported into sieve tubes.
4. Sugar is transported from cell to cell in the leaf.
5. Sugar moves down the stem.
</span>
C) 2, 4, 3, 1, 5
Answer:
The correct option among them is option 'C'
The isolated DNA will show one band in the ultracentrifuge tube, which consistent with semiconservative replication.
Explanation:
The Meselson Stahl experiment shows DNA replicates by semiconservative mechanism.E.coli cells initially were grpwn in a medium containing ammonium chloride prepared with heavy isotope of nitrogen (¹⁵N) until all the cellular DNA was labeled. After the cells were transferred to a medium containing the normal light isotope of nitrogen (¹⁴N), samples were removed periodically from the cultures and the DNA in each sample was analyzed by equilibrium density gradient centrifugation. This technique can separate heavy heavy (¹⁵N-¹⁵N) , light light(¹⁴N-¹⁴N) and heavy-light (¹⁵N-¹⁴N) ds DNA into distinct bands.
After one generation of growth, all the extracted DNA had the density of ¹⁵N-¹⁴N DNA. After two generations, approximately half the DNA has density of ¹⁵N-¹⁴N DNA and on the other hand,the density of ¹⁴N-¹⁴N DNA.
With additional generations,a large fraction of the extracted DNA consisted of ¹⁴N-¹⁴N duplexes and ¹⁵N-¹⁵N duplexes never appeared.
Answer:
cranial nerve IV: sensory
Explanation:
The correct would be: cranial nerve IV: oculomotor.
The cranial nerve IV is part of the group of cranial nerves called Motors (pure) that are those that move the eye, tongue and accessory latero-posterior muscles of the neck. The cranial nerve IV is an oculomotor nerve, because it is responsible for the superior oblique movement of the eye.
Nerves that have sensory functions are intended for the sense organs and are therefore called sensory rather than sensory, which do not refer to general sensitivity (pain, temperature and touch).