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Sedbober [7]
4 years ago
12

What must happen before la a chemical reaction can begin

Biology
1 answer:
stiks02 [169]4 years ago
4 0
You need some kind of metric that captures the effect of a reaction on the entropy of the universe, including both the reaction system and its surroundings. Conveniently, both of these factors are rolled into one convenient value 
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What process of DNA is represented in the diagram below?
11111nata11111 [884]

Answer:

DNA Replication

Explanation:

Because DNA's two strands are complementary, it can reproduce itself. This means that one strand can serve as a template for the creation of the other. It occurs just prior to cell division via mitosis or meiosis, allowing each new daughter cell to have a full genome.

The two strands of DNA must first separate from one another before replication can begin. DNA helicase is an enzyme that breaks the hydrogen bonds that hold the two strands together, allowing them to separate.

8 0
2 years ago
A wilted flower placed in a vase of water for several hours became stiff and stood erect. when it was placed in a salt solution,
kherson [118]
The cell surface membranes of cells of flower, though semi-permeable, allows water to pass through cell via aqua proteins embedded in the membrane.
This is true since water goes from inside of cell to the extracellular environment when water potential inside the cell is higher than water potential outside the cell via process of osmosis (water goes from an area of high water potential down a concentration gradient to an area of low water potential). Cells in the flower became plasmolysed (cell surface membranes tear away from the cell walls) as the volume of water in cell decreases.

Hope this helps! :)
3 0
4 years ago
Specialized cells in plant roots ensure that they grow down into the soil to find water and nutrients. This plant response by sp
ElenaW [278]
Here is the answer that would best complete the given statement above. Specialized cells in plant roots ensure that they grow down into the soil to find water and nutrients. This plant response by specialized cells is calledGRAVITROPISM. This is also known as geotropism wherein plants grow in response to gravity. Hope this answer helps. 
7 0
3 years ago
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Fats are considered one of the five basic food groups. True or false.
gladu [14]

False: Fats are derived from different foods inside most food groups, and aren't exclusive.

3 0
3 years ago
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Many natural ecosystems have been destroyed by human activity. To better manage our remaining natural ecosystems, we must first
icang [17]

Answer:

LOL its D

Explanation:

green plants → squirrels → owls

7 0
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