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Morgarella [4.7K]
3 years ago
10

The cell membrane that helps to control what enters and leaves a cell

Biology
1 answer:
ss7ja [257]3 years ago
7 0
The cell membrane that helps to control what enters and leaves a cell is the outer boundary of the cytoplasm
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How do air masses that form over the land and ocean Affect weather in the United States?
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Which of the following traits of bacterial cells differ signifcantly from the other domains of life?
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Option (A), (B), (D) and (F).

Explanation:

Bacteria are involved in the domains of eubacteria and archaea. Bacteria are different from the other organism and shows different in the chemical and cellular structure of the cell.

The translation elongation factors are different in bacteria and other organisms. The translation factors of bacteria are EF-Tu and EF-Ts whereas the eukaryotic elongation factors are eEF-1 subunit α and eEF-1 subunit βγ. A single RNA pol is present in bacteria and three different RNA pol is present in eukaryotes. Peptidoglycan is present in prokaryotes. Phospholipids contain ester linkage in bacteria and ether linkage in archaea.

Thus, the correct answer is option (A), (B), (D) and (F).

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What would be the environmental impact of humans using more renewable resources from the environment?
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This will reduce the average temperature of the planet and lessen the catastrophic effects of climate change.

Explanation:

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3 years ago
What ways do enzymatic catalysts increase the rates of reactions? they shift the reaction equilibrium toward the products they d
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This is a question regarding how enzymes increase the rates of reactions. There are choices and the instructions is to check all that apply.

<span>1. They shift the reaction equilibrium towards the products. </span>
<span>2. They increase the concentration of the reactants. </span>
<span>3. They lower the activation energy of the reaction. </span>
<span>4. They decrease the free energy of a reaction. </span>
<span>5. They promote the formation of a transition state. 

The correct answers in this question are "they lower the activation energy of the reaction" and "they promote the formation of a transition state". Enzymes do not necessarily shift the the reaction equilibrium to the products, as there are reversible enzymatic reactions that can reverse the pathway back to the substrates. They do not increase the concentration of the reactants as the concentration of the reactants is an independent variable in this process. They do not decrease the free energy of activation as this is a constant in every reaction depending on the substrates and the products. 

Enzymes do, however, lower the activation energy of the reaction meaning it will take less energy and effort for the substrates to reach the activation energy to transform it to its transition state then to the products. With this said, enzymes promote the formation of a transition state.

Attached is a simplified image on how enzymes work. </span>

7 0
3 years ago
Read 2 more answers
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