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A plant grows toward the sun shining in a window =

What is this called?

Answers

Answer 1
Answer:

Answer:

phototropism.
Answer 2
Answer: Even mature plants bend toward the strongest light. They do this by elongating the cells of the stem on the side that is farthest from the light. This type of light-oriented growth is called phototropism.

The answer is phototropism

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ribosomes are found floating in the cytoplasm and embedded in the endoplasmic reticulum. their job is to assemble?​

Answers

Answer:

Ribosomes link amino acids together in the order specified by the codons of messenger RNA molecules to form polypeptide chains. The function of ribosomes is to make proteins for the cell.

HELPPP PLEASE I’LL GIVE A LOT OF POINTSa) Explain how animals with radial symmetry differ from animals with bilateral symmetry.

b) Give an example of an animal with radial symmetry and an example of an animal with bilateral symmetry.

Answers

A) Any plane via the central axis can be used to divide radially symmetrical creatures into symmetrical halves. Animals with bilateral symmetry can only be divided into equal halves along a single particular plane that passes through a central axis.

B) radial: starfish bilateral: dogs

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.

Answers

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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May someone please help me on this ?

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Answer:

C- active B- diffusion A- facilitated

Explanation:

What follows a first quarter moon but comes before a full moon​

Answers

Half moon ………. Follows first quarter moon

Keeping in mind the life cycle of bacteriophages, consider the following problem: During the reproductive cycle of a temperate bacteriophage, the viral DNA inserts into the bacterial chromosome where the resultant prophage behaves much like a Trojan horse. It can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. Several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. Insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. As stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Answers

Romans and the Trojan war
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