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s2008m [1.1K]
2 years ago
12

Which class of molecules can directly cross the cell membrane without the aid of transport proteins? Choose one: A. Ions B. Suga

rs C. Uncharged gasses D. Amino acids
Biology
1 answer:
yulyashka [42]2 years ago
6 0
Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
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Arsenate is a toxic ion that can interfere with both glycolysis and oxidative phosphorylation. Arsenate resembles inorganic phos
svetoff [14.1K]

Answer:

In the presence of arsenate glycolysis produces fewer ATP and NADH molecules per glucose molecule.

Explanation:

it is supposed to be 2 molecules of 3-phosphoglecerate with each producing 2 ATP making a total of 4 ATP gain but since it is just one and arsenate, only 2 ATP will be generated instead of four, thus ATP yield is reduced.

3 0
2 years ago
What is the correct formula for calculating the age of a meteorite if using half-life?
Mamont248 [21]

Your answer is Age of Object = n times t 1/2

8 0
2 years ago
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What cellular process(es) is/are responsible for the increase in protein content associated with the gap phases of the cell cycl
Dafna11 [192]

Answer:

Protein/enzyme synthesis

Explanation:

<em>The process of synthesis of protein in the cell is mainly responsible for the increase in the protein content of the cell.</em>

<em>The process which is also known as the translation process of gene expression takes place at the G1 and G2 phases of the interphase of the cell cycle.</em>

During protein synthesis, mRNA synthesized in the nucleus are transported to the cytoplasm and the genetic codes on the mRNA are translated into their respective amino acids linked together by polypeptide bonds. The protein are then folded in specific ways for specific enzymes.

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2 years ago
Which factors affect the development of the Florida peninsula? Check all that apply. coastal erosion sinkholes sand dunes underw
mamaluj [8]

Coastal erosions affect the development of the Florida peninsula.  

Explanation:

Coastal erosion along the Florida coast is due to rising sea level, natural disasters like frequent storms and hurricanes, numerous navigational inlets and other constructions, and poor developmental plans.

Since the entire stretch of Florida is covered by coastline, coastal erosion is a big threat to people living along its coasts, especially in places like Jacksonville.

Florida is a state which attracts a huge number of tourists mainly due to its coastline which contributed a lot to the state’s economy. With increasing coastal developments, the erosion also increased making it more vulnerable.

Many public and private properties have been eroded due to coastal erosions. Hence sustainable development must be undertaken to protect the coastline as well as develop the state of Florida .

6 0
2 years ago
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If bears find insects after they move decaying logs, they more frequently move decaying logs. This most clearly indicates that f
Alex777 [14]

Answer:

Reinforcement

Explanation:

Reinforcement can be referred to as anything that can be used to increase, enhance or strengthen a desirable behavior in a person or an organism. Reinforcement is of two types, they include positive reinforcement and negative reinforcement. Positive reinforcement has to do with adding a reward in order to enhance a desirable behavior, while negative reinforcement has to do with removing an undesirable thing in order to strengthen a desirable behavior.

From the question asked,  because the presence of insects after moving the decaying logs increased the frequency at which the bears moved the decaying logs, the finding of the insects is, therefore, a reinforcement. The finding of the enhanced or strengthened the desirable behavior.

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