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nadezda [96]
3 years ago
11

What is the key organism that ensures the nitrogen cycle can run properly?

Biology
1 answer:
Zarrin [17]3 years ago
7 0

Answer:

the nitrogen fixing bacteria is an important organims in the nitrogen cycle which helps .in fixing the nitrogen into the soil  

Explanation:

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Name the process by which sugar moves into cell A.
andre [41]

Answer:

need picture brahj, but I got u, when it moves from high concentration to an area of low concentration, a process called diffusion. its process of moving glucose across the cell membrane is called facilitated diffusion.

Explanation:

3 0
3 years ago
Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered p
Rom4ik [11]

Answer:

genes for flower color and edge shape are linked. They do not assort independently.

Explanation:

<u>Available data:</u>

  • test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.
  • serrated leaves → dominant trait
  • smooth edges → recessive trait
  • purple color → dominant trait
  • white color → recessive trait
  • F1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.

There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.

To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent

 

5 0
3 years ago
1. Which of the following statements regarding enzymes is TRUE?
andreev551 [17]

Answer:

D. All of the above

Explanation:

Enzymes are proteins, act as biological catalysts, and are sensitive to factors like pH and temperature.

Hope this helps!

6 0
2 years ago
The hormone , which is secreted by the pineal gland, influences the sleep–wakefulness cycles.
KonstantinChe [14]
The hormone described above is the hormone Melatonin.
Melatonin is a hormone secreted by the pineal gland in the brain, which helps regulate other hormones and maintains the body's circadian rhythm. This rhythm is an internal 24 hour clock that plays a critical role when we fall asleep and when awake. When it is dark the body releases more melatonin. 
6 0
3 years ago
Read 2 more answers
Which type of graph would you use to compare the amount of rainfall each month for one year?
vladimir1956 [14]
You could use a line graph. Hope that helps.
8 0
3 years ago
Read 2 more answers
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