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frutty [35]
3 years ago
10

gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because _____.

Biology
1 answer:
Yuliya22 [10]3 years ago
3 0
Water contains much less oxygen per unit volume than air
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The rock cycle is not important to living organisms.
trapecia [35]

you got this

Explanation

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3 years ago
Can you help with number 5? I didn’t feel like writing it.
Leno4ka [110]

From what I can see in the picture, the cell appears that it would take up half of the microscopes view if it were to be pushed to the very edge on one side.

That would be the radius. The radius is half of the diameter, and half of 0.8 mm would be 0.4 mm. The length of the cell is about 0.4 mm.

Now for the width. Since the diameter of the FoV (field of view) is 0.8, we can see that the cell doesn't reach both sides of the circle it is in. It also doesn't appear to take up half of it. So, to get the aprox. width of the cell, we're going to half the radius.

Half of 0.4 mm is 0.2 mm, so the width of your cell is about 0.2 mm.

7 0
3 years ago
Study the data from the USGS website to learn more about the spread of West Nile Virus. Write a brief description of what has ha
Fantom [35]

The west Nile Virus is pathogen which caused the West Nile fever and encephalitis. The pathogen was introduced in 1999 in the Western Hemisphere and infected a major population in new york. It then expanded to 12 states and district of columbia. The major carrier of the pathogen was Avian and Mosquitoes species. In between 1999 to 2008, nearly 2500000 people were infected and nearly 1500 people died. Also there were thousands of cases of encephalitis or meningitis.

5 0
2 years ago
Which of the following events occurs directly AFTER a DNA molecule is unzipped?
ioda

Answer:

DNA replication occurs through the help of several enzymes. These enzymes "unzip" DNA molecules by breaking the hydrogen bonds that hold the two strands together. Each strand then serves as a template for a new complementary strand to be created. Complementary bases attach to one another (A-T and C-G).

Explanation:

Which of the following events occurs directly after RNA polymerase recognizes the transcription start site of a gene? the DNA strand begins to unwind, separating the two strands.

:D Hope it is helpful

8 0
3 years ago
Which of the following would increase the rate of an enzyme-catalyzed reaction?
ivanzaharov [21]

Answer:

Option). Increasing enzyme, increasing substrate, increasing co-factors

Explanation:

Enzymes are bio-catalysts that increase the rate of a chemical reaction by decreasing its activation energy. As enzymes are catalytic molecules, increasing enzyme concentration would increase rate of reaction.

Substrates are those substrates that react with other molecules to form products. Thus, increasing the concentration of substrates, along with enzymes to an enzyme-catalyzed reaction would increase rate of that reaction.

Co-factors are non-protein compounds or ions, which are required for proper functioning of many enzymes. Thus, increasing the concentration of co-factors, along with enzymes to an enzyme-catalyzed reaction would increase rate of that reaction.

Thus, the correct answer is option). 'increasing enzyme, increasing substrate, increasing co-factors.'

8 0
3 years ago
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