Answer:
C.
mark me the brainliest if this helps
Explanation:
Simple diffusion is pretty much exactly what it sounds like – molecules move down their gradients through the membrane. Molecules that practice simple diffusion must be small and nonpolar*, in order to pass through the membrane. Simple diffusion can be disrupted if the diffusion distance is increased. If the alveoli in our lungs fill with fluid (pulmonary edema), the distance the gases must travel increases, and their transport decreases. Facilitated diffusion is diffusion that is helped along (facilitated by) a membrane transport channel. These channels are glycoproteins (proteins with carbohydrates attached) that allow molecules to pass through the membrane. These channels are almost always specific for either a certain molecule or a certain type of molecule (i.e. an ion channel), and so they are tightly linked to certain physiologic functions. For example, one such transporter channel, GLUT4, is incredibly important in diabetes. GLUT4 is a glucose transporter found in fat and skeletal muscle. Insulin triggers GLUT4 to insert into the membranes of these cells so that glucose can be taken in from the blood. Since this is a passive mechanism, the amount of sugar entering our cells is proportional to how much sugar we consume, up to the point that all our channels are being used (saturation). In type II diabetes mellitus, cells do not respond as well to the presence of insulin, and so do not insert GLUT4 into their membranes. This can lead to soaring blood glucose levels which can cause heart disease, stroke, and kidney
Answer:
i think the answer is owl.
Explanation:
1. Answer;
1000 times
If the surface area of a cell that is shaped like a cube increases 100 times, its volume increases about 1000 times.
Explanation;
If the surface are increases 100 times it means that the side of a cube has increased by a scale factor of 10, therefore, the volume of the cube will increase about 1000 times ( 10 × 10 × 10 = 1000).
2. Answer;
Moving needed materials in and waste products out.
Explanation;
Large cells have more trouble moving materials that are needed in the cell and wastes products out of the cell, as compared to small cells.
The volume of large cells is so large, the surface area, by comparison, is relatively small, thus large cells have a small surface are to volume ratio, compared to small cells which have a large surface area to volume ratio, which makes the transportation of substances into and out of the cells extremely efficient compared to large cell.
Answer:
The correct answer will be- there is some transforming principle which transformed the harmless bacteria to harmful bacteria.
Explanation:
Griffith performed the experiment on infection caused by the Streptococcus pneumonia in mice. He selected two strains of bacteria: avirulent strain called R strain and a virulent strain called S strain.
During the experiment, when he heat-killed the S bacteria, added it to the R strain bacterial plates and then injected the bacteria into mice, he found that the bacteria killed the mice. He was astonished to see the result as the harmless bacteria killed the mice.
He concluded that adding the S bacteria produced some molecule which could have transformed the harmless bacteria to harmful bacteria. He called the transforming molecule as transforming principle.
Griffith performed the experiment on two strains of Streptococcus pneumonia in which one strain is avirulent called R strain and another virulent strain called S strain.
When Griffith killed the S bacteria (virulent) by heat and added it in the R strain Petri dishes and then injected the bacteria to mice, the mice killed. This amazed him as to how the avirulent bacteria killed the mice ?
He concluded that there was some principle which transformed the avirulent bacteria to virulent bacteria and thus called the principle as transforming principle.
