_____________organisms tolerate only limited variation in environmental osmotic concentration. A) euryhaline B) stenohaline C) osmoregulator D) osmoconformer

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Answer 1
Answer:

The corect answer is B


Related Questions

The Isotope calcium-41 decays Into potassium-41, with a half-life of 1.03 x 105 years. There is a sample of calcium-41 containing 5 x 10⁹ atoms.How many atoms of calcium-41 and potassium-41 will there be after 4.12 x 105 years? OA 3.125 x 108 atoms of calcium-41 and 4.375 x 10⁹ atoms of potassium-41 OB. 6.25 x 108 atoms of calcium-41 and 4.6875 x 10° atoms of potassium-41 OC. 6.25 x 108 atoms of calcium-41 and 4.375 x 109 atoms of potassium-41 OD. 3.125 x 108 atoms of calcium-41 and 4.6875 x 10° atoms of potassium-41 hts reserved. Reset Next
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An experiment is designed to study the mechanism of sucrose uptake by plant cells. Cells are immersed in a sucrose solution, and the pH of the solution is monitored. Samples of the cells are taken at intervals and their sucrose concentration measured. The pH is observed to decrease until it reaches a steady, slightly acidic level, and then sucrose uptake begins. (a) Evaluate these results and propose a hypothesis to explain them. (b) Predict what would happen if an inhibitor of ATP regeneration by the cell were added to the beaker once the pH was at a steady level? Explain your thinking.

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Answer:

a. Sucrose is present in the plant cells that provide them energy and helps in the metabolic process of the plants. The pH of the plant cells will increase and their cellular environment becomes basic in nature. The uptake of sucrose is pH specific and the acidic condition in the environment allows the uptake of sucrose. The decrease in pH concentration in the environment increases the pH inside the cells.

b. The inhibitor of ATP inhibits the production and functioning of the ATP molecule.  This effects the sucrose transport in the plant cells. As the sucrose movement requires the ATP and it is a active transport. The ATP inhibition decreases the sucrose uptake in the plant cells and the sucrose concentration decreases inside the plant cells.

Final answer:

Sucrose uptake in plant cells seems to require an acidic environment, brought about by the active transport of protons which requires ATP. An inhibitor of ATP regeneration would likely slow or stop this transport and, in turn, sucrose absorption.

Explanation:

The reported results suggest that the process of sucrose uptake in plant cells involves acidification of the surrounding medium prior to sucrose absorption. This can be explained by the proton-sucrose symport mechanism, in which protons (H+ ions) are actively pumped out of the cell in a process that requires ATP energy. When these protons combine with water (H2O) in the cell's environment, they form hydronium ions (H3O+), resulting in a lower pH or more acidic environment. Only after this acidic environment is established does sucrose uptake begin.

Based on this mechanism, introducing an inhibitor of ATP regeneration would be expected to decrease or halt this process, since ATP is required for the active transportation of protons. With less ATP, fewer protons will be pumped out, leading to a less acidic environment and, thus, lower sucrose uptake. This hypothesis is supported by how phosphofructokinase, a key enzyme in glycolysis (ATP production), is affected by low pH levels.

Learn more about Sucrose Uptake in Plant Cells here:

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Why there are more fungi in a forest than in a field? What role do they play in an ecosystem?

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Answer:

Explanation:

Fungi grows more in damp conditions. There is also more food availibility of food in the forest for fungi. There is more dead matter in forests that fields.

Fungi and other decomposers feasst on dead matter and break them down. This increases soil fertility and allows more plants to grow.

Answer:

The role fungi plays is a decomposer.

Explanation:

Decomposers are plants that don't make their own food. They get their food from breaking down dead plants and animals. Usually you see fungi in forests because its more moist and has more greens. A field is an open space and has too much sunlight, not many animals die in a field as in a forest its more common.

I hope this answers your question. :)) ~ kinzey

5. Which organisms would you find first on newly created rock?*

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The first inhabitants are lichens or plants—those that can survive in such an environment. Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses.

Using random sampling technique, select 3 grid segments for a sample taken from the plot above. List the 3 grid segments you selected. (1 point)

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Answer:

I don't know exactly what you need but I give you an example so that you can create your samples through the Excel program, I hope it helps.

Just enter your sampling frame (the clients of which you have contact information) in the spreadsheet. Once you have a sampling frame (possible respondents) in Excel, you can easily select a random sample among them. For example, in your case that it is a work of biology and neceists three random samples here you can apply it with the following rules:

-Add a new column in the spreadsheet and name it "Random Number".

-In the first cell below your header row, type "= RAND ()".

-Press “Enter” and a random number will appear in the cell.

-Copy and paste the first cell in the other cells of the column.

-Once each row has a random number, organize the records from the "Random number" column.

-Then, select the first samples. In this way you will randomly choose from all samples.

Please help me with this question:)

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400x

Is the answer to this question.

What are physical characteristics that help an organism survive

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Answer:

Special characteristics adapted by specific animals allow them to carry out unique abilities in order to survive. For instance, a cheetah's long tail helps it balance when running at rapid speed in order to hunt. Or an arctic woolly bear caterpillar is able to be frozen and fill it's body with an antifreeze hormone that allows it to survive temperatures below freezing.