The answer is 62 percent. <span>By 1999, after the Clean Water Act had been passed in 1970, the percentage of U.S. surface waters safe for fishing and swimming had increased from 36 percent to 62 percent. </span>
The answer is B. This the systolic pressure of a giraffe in comparison
to that of a human that is 100 mm Hg. This
high blood pressure ensures that the giraffe maintains 100 mmHg in the brain.
Since a high BP impairs gas exchange and increases transpulmonary filtration,
the pulmonary circulation must be separated. Therefore, in the giraffe, there
is a relatively great difference between the right ventricular and left ventricular
maximal rates of pressure ascent, the left ventricular rate of ascent being 5
times that calculated for the right ventricle.
Answer:
The correct answer is: Uncontrolled release of digestive enzymes into the duodenum.
Explanation:
- SER or the Smooth Endoplasmic Reticulum is the major location in the cells where fatty acids and steroid molecules are produced.
- These fatty acid molecules form the structure of the various membranes in the cell, including the plasma membrane and organelle membrane.
- The membrane system of the cells gives them a structural integrity.
- Disruption of the SER of the pancreatic acinar cells by a toxin will prevent the synthesis of lipid molecules which forms the membranes in the cell.
- This will cause the membrane to lose its integrity, fluidity, flexibility and the ability to prevent unregulated movement of molecules across them.
- The digestive enzymes need to secreted by the pancreatic acinar cells into the duodenum only when food is available in the duodenum for digestion.
- But loss of the ability of the plasma membrane of the pancreatic acinar cells to regulate the flow of molecules across itself (due to disruption in the lipid production by SER) causes the unregulated flow of digestive enzymes out of the cells into the duodenum as soon as they get produced.
Asexual reproduction requires only one parent. Since there is only one parent, there is no exchanging of genetic information, and the offspring are clones of the parent. Asexual reproduction in plants can occur in a variety of forms, including budding, vegetative propagation, and fragmentation. Let's discuss these reproduction types.
Have you ever found an old potato hidden in the back of a cabinet in your kitchen? If a potato sits around for a long time, it will have many small growths, commonly referred to as 'eyes'. Each of these sprouts can be cut from the potato and planted. They will grow into a clone of the original plant that produced the potato. This is a classic example of budding.
For an example of vegetative propagation, let's look at the strawberry plant. If you plant strawberries, you will notice that a row of plants will quickly spread into a large mass of plants. This is because they do a type of vegetative propagation by producing runners. Strawberry plants send out horizontal stems known as stolons. These stems will work their way into the ground in places and form roots, and eventually a new plant will grow.
A third type of asexual reproduction in plants is called fragmentation. This type of asexual reproduction is often used by nurseries and greenhouses to produce plants quickly. For many plants, a clone can be created by breaking off a portion of the stem and placing it in soil or water, depending on the plant. This also happens naturally when small parts of a plant fall off onto the soil and begin to grow into a new plant. An example of fragmentation occurs in liverwort plants, whose small stems or leaves are often broken off by animals or wind and then grow into clones of the parent plant when they land in the soil. I hope this helps
