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k0ka [10]
3 years ago
10

Dead zones are low-oxygen areas that develop on the seafloor. Scientists hypothesize that phytoplankton blooms cause these dead

zones. Phytoplankton blooms occur when excess nutrients are introduced by pollution from fertilizers, sewage plants, and the burning of fossil fuels. Which of the following would most likely cause an increase in these contributors to dead zones?
Biology
1 answer:
allochka39001 [22]3 years ago
4 0

Answer:

Rainfall patterns that increase freshwater runoff from terrestrial ecosystems.

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The question is incomplete as it does not have the options which are:

A. bioremediation

B. mutualism

C. quorum sensing

D. quorum settling

E. mass-settling

Answer:

C. quorum sensing

Explanation:

Quorum sensing is the gene regulation mechanism used by the bacteria to communicate with the other bacteria.  The quorum sensing process depends on the number of bacterial cells or the density of the cells.

When the bacterial number increase in number then the bacterial cells send the signal to the nearby cells and and regulates the expression of the gene.  In the given question, the same chemical signal process depends on the density of the cell and thus quorum sensing is correct.

7 0
4 years ago
Describe the relationship between the concentration of in the blood and the
otez555 [7]

Answer:

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sciencebiologybiology questions and answersConcentration Of NAD+ (umol/L) 4 8 12 16 20 Concentration Of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH...

Question: Concentration Of NAD+ (umol/L) 4 8 12 16 20 Concentration Of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (weeks) Figure 2. The Concentration Of NAD* (top) And Lactic Acid (bottom) In The Blood Of A Representative Treated Individual (a) Describe The Pattern Of Inheritance That Is Most Likely Associated With A Mutation In The MT-ND5 Gene. ...

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Concentration of NAD+ (umol/L) 4 8 12 16 20 Concentration of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (we

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Concentration of NAD+ (umol/L) 4 8 12 16 20 Concentration of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (weeks) Figure 2. The concentration of NAD* (top) and lactic acid (bottom) in the blood of a representative treated individual (a) Describe the pattern of inheritance that is most likely associated with a mutation in the MT-ND5 gene. Explain why individuals are not typically heterozygous with respect to mitochondrial genes. (b) Identify a dependent variable measured in the researcher's experiment. Identify one control that the researcher could use to improve the validity of the experiment. Justify the researcher analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period. (c) Describe the relationship between the concentration of NAD in the blood and the concentration of lactic acid in the blood during the first 5 weeks of treatment with the vitamin. Based on Figure 2, calculate the average rate of change in blood NAD concentrations from week 5 to week 17. (d) The researcher performed a follow-up experiment to measure the rate of oxygen consumption by muscle and brain cells. Predict the effect of the MT-ND5 mutation on the rate of oxygen consumption in muscleand brain cells. Justify your prediction. The researcher had hypothesized that the addition of the vitamin that is similar in structure to NADH would increase the activity of the mutated NADH dehydrogenase enzyme in individuals

3 0
3 years ago
Read 2 more answers
which enviomental change play a key role in making human survival easier and bringing about the neolithic age ?
kramer
Well considering that the neolithc age place around 10,200 BC. And was known as the age of technology ( Teknowledge he referring to handcrafted tools ) in these tools made it more convenient for humans to hunt and eat.
5 0
3 years ago
What holds the base pairs to each other?
WINSTONCH [101]

Answer:

The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

Explanation:

6 0
3 years ago
Some people argue that human actions have caused and will continue to cause harm to Earth’s environment. They believe that we as
KIM [24]
We have to make harm to the earth to make more and better creations and advances to technology. As in the over ue of oil makes better transportation. Or that gas is the soul factor of you getting to school or getting to the store. " well I get my food delivered to me." The vehicle is getting to your house to give you your every day groceries. Also the electric cars people drive is being manufactured by companies that use oil and gas to work their machines.   
6 0
4 years ago
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