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djverab [1.8K]
3 years ago
13

What is energy coupling?

Biology
1 answer:
mart [117]3 years ago
3 0
The answer is b. For example, nuclear fusion in the sun (an exergonic process) releases energy as light and heat, and powers the initial steps of photosynthesis (an endergonic process). 
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Based on Newton’s law of universal gravitation, complete the following table. distance increasesmass increasesdistance decreases
olya-2409 [2.1K]
Gravity increases as mass increases.

Gravity decreases when distance decreases

8 0
3 years ago
Read 2 more answers
What is meant by the statement ""enzymes are biological catalysts""?.
Lesechka [4]

Answer:

Enzymes speed up the chemical reactions in living cells.

Explanation:

An enzyme is a biological catalyst and is almost always a protein. It speeds up the rate of a specific chemical reaction in the cell. The enzyme is not destroyed during the reaction and is used over and over.

8 0
2 years ago
Why is it important to center the object you want to look at in your field of view before changing to a higher magnification obj
Lesechka [4]

Answer:

B. So you can always see the entire object at the higher magnification

Explanation:

A microscope is used to view objects smaller than the naked or unaided eyes can see. The objective lens, in conjunction with the occular or eye lens, is used to achieve this purpose. The objective lens are of different magnifications as follows: 10X, 40X, 100X etc.

However, as the magnification increases i.e. higher objective, the object in the field of view becomes smaller and less focused. Hence, the object in the field of view must first be centered at a lower magnification/objective lens before changing to a higher one in order for the entire object to be seen at a higher magnification.

5 0
3 years ago
Ecosystems include food webs that show predation and prey interactions among organisms. But ecosystems have many more relationsh
AnnZ [28]

Answer:

Explanation:

Food webs describe the relationships — links or connections — among species in an ecosystem, but the relationships vary in their importance to energy flow and dynamics of species populations. Some trophic relationships are more important than others in dictating how energy flows through ecosystems. Some connections are more influential on species population change. Based on different ways in which species influence one another, Robert Paine proposed three types of food webs based on the species of a rocky intertidal zone on the coast of Washington (Ricklefs 2008, Figure 2). Connectedness webs (or topological food webs) emphasize feeding relationships among species, portrayed as links in a food web (Paine 1980). Energy flow webs quantify energy flow from one species to another. Thickness of an arrow reflects the strength of the relationship. Functional webs (or interaction food webs) represent the importance of each species in maintaining the integrity of a community and reflect influence on the growth rate of other species' populations. As shown in Figure 2, limpets Acmaea pelta and A. mitra in the community consume considerable food energy (energy flow web), but removal of these consumers has no detectable influence on the abundance of their resources (functional web). The most effective control was exerted by sea urchin Stronglocentrotus and the chiton Katharina (Ricklefs 2008).

3 0
3 years ago
Plant-like photosynthesis that releases oxygen occurs in
Llana [10]

Answer:

A. Cyanobacteria.

Explanation:

Both cyanobacteria and plants use water as an electron donor for the light phase of photosynthesis and make ATP and NADPH. The ATP and NADPH are used in the Calvin cycle to fix the atmospheric CO2 into glucose. The use of water as an electron donor releases oxygen gas as a by-product. This photosynthesis wherein the use of water as an electron donor releases oxygen gas as a by-product is also called oxygenic photosynthesis.

5 0
3 years ago
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