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eimsori [14]
1 year ago
9

This image shows how a lunar eclipse occurs. A lunar eclipse occurs when the Moon passes directly behind Earth into its umbra, o

r shadow. As shown in the image, the Sun, Earth, and Moon align, with Earth in the middle. Given this information, which statement elaborates on why there is not a solar eclipse every month, as the Moon passes between the Sun and Earth?
Biology
1 answer:
Sauron [17]1 year ago
6 0

Because the earths orbit around the Sun is not in the same plane as the moon orbit around the earth.

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Celine feels that the form of marketing their company is using​ isn't working anymore. Merle disagrees vehemently. Those in the
Olin [163]

Answer:

B. Traditional view

Explanation:

the traditional view is that nothing positive results from a conflict

4 0
2 years ago
Which of the Earth’s subsystems is directly affected by burning fossil fuels?
gulaghasi [49]

The correct answer is option (d) atmosphere.

Fossil fuels are the hydrocarbons formed in the geological past, derived from the remains of dead plants and animals. They include the coal, fuel gas and the natural gas. The burning of fossil fuels is one of the greatest contributor of carbon dioxide being added to the atmosphere. This results in the pollution of air in the atmosphere resulting in the formation of smog. Carbon dioxide being a green house gas, affects the atmosphere and causes green house effect leading to global warming and climate changes.

The burning of fossil fuels affects the geosphere, biosphere and hydrosphere indirectly due to its primary direct effect on the atmosphere. Thus, atmosphere is directly affected by the burning of fossil fuels.

5 0
2 years ago
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A medical researcher is investigating the chemical and physical properties of substance that she isolated from the surface of ch
LekaFEV [45]

Answer:

the scientist has determined that the chemical isolated from charcoal-grilled meat is an oxidant.

Explanation:

oxidants are oxidizing agents. oxidants have the capacity to damaging living cells. vitamin C on the other hand is an active antioxidant, hence it was able the breakdown of the cells.

4 0
1 year ago
Enolase is an enzyme that catalyzes one reaction in glycolysis in all organisms that carry out this process. The amino acid sequ
lorasvet [3.4K]

Answer:

a) The response indicates that a pH below or above this range will most likely cause enolase to denature/change its shape and be less efficient or unable to catalyze the reaction.

b)The response indicates that the appropriate negative control is to measure the reaction rate (at the varying substrate concentrations) without any enzyme present.

c)The response indicated that the enolase has a more stable/functional/correct/normal protein structure at the higher temperature of 55°C than at 37°C because the enzyme is from an organism that is adapted to growth at 55°C.

Explanation:

Enolase catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate during both glycolysis and gluconeogenesis.In bacteria, enolases are highly conserved enzymes and commonly exist as homodimers.

The temperature optimum for enolase catalysis was 80°C, close to the measured thermal stability of the protein which was determined to be 75°C, while the pH optimum for enzyme activity was 6.5. The specific activities of purified enolase determined at 25 and 80°C were 147 and 300 U mg−1 of protein, respectively. Km values for the 2-phosphoglycerate/phosphoenolpyruvate reaction determined at 25 and 80°C were 0.16 and 0.03 mM, respectively. The Km values for Mg2+ binding at these temperatures were 2.5 and 1.9 mM, respectively.

Enolase-1 from Chloroflexus aurantiacus (EnoCa), a thermophilic green non-sulfur bacterium that grows photosynthetically under anaerobic conditions. The biochemical and structural properties of enolase from C. aurantiacus are consistent with this being thermally adapted.

8 0
1 year ago
The difference between protostomes and deuterostomes is _____. protostomes have only an ectoderm and endoderm protostomes have o
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Protostomes develop a mouth first and then an anus. This is the difference between protostomes and deuterostomes.

In protostome development, there is a spiral radical and indeterminate cleavage. The blastopore becomes the mouth and the coelom forms from the mesoderm.

In deuterostomes development, radial and indeterminate cleavage takes place. The blastopore is the new anus and the coelom forms from budding off the wall of the archenteron.
7 0
2 years ago
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