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worty [1.4K]
3 years ago
10

Which of the following is NOT a source of point-source pollution? a. trash dumping c. pesticide runoff b. sludge dumping d. oil

spill
Biology
2 answers:
IRINA_888 [86]3 years ago
6 0
C pesticide runoff........................................................juust doing this cuz its short 

skad [1K]3 years ago
3 0

Answer: c. pesticide runoff

Explanation: A point source pollution is the pollution which is caused by the pollutants whose source of origin can be traced back and further pollution can be prevented. A non-point source pollution is the one which cannot be traced back to it's origin and hence, cannot be prevented from further pollution. Trash dumping, sludge dumping and oil spill are the examples of point source pollution. But pesticide runoff is the example of non-point source pollution. A surface runoff will wiped off the pesticides from their surface and discharge them to the water body the source of origin of these pesticides will remain undetermined.

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A cell with 80 chromosomes undergoes mitosis. How many chromosomes are found in the daughter cells? How many daughter cells are
Natalka [10]

Answer:

1. 80 chromosomes are found in each of the daughter cells. 2. Two daughter cells are produced. 3. The daughter cells are identical to each other.

Explanation:

Mitosis is simply a process of cell division whereby two daughter cells that are genetically identical are produced from a single parent cell. A cell having 80 chromosomes would undergo Mitosis through these various stages:

Interphase: This can be referred to as the rest phase between cell division when mature enough for reproduction. This is a preparatory stage where DNA is duplicated and ready for the division of chromosomes

Prophase: This stage marks the beginning mitosis of the cell with 80 chromosomes. The chromatin threads start a coiling process in which the chromosomes become condensed to enable easy distribution to daughter cells without tangling.  

Prometaphase: This phase commences toward the end of the prophase, where the nuclear envelop breaks down. The chromosomes move toward to the center of the cell.

Metaphase: At this stage, the duplicated chromosomes line up on the mid plane or equator of the cell. During this stage, each chromatid is condensed completely and appears thick and distinct.

Anaphase: At this stage, the chromosomes move toward the poles as each replicated copies of the DNA of the cell ends up on either side of the cell. What we would have here at this stage is an entirely two new sister chromatid having 80 chromosomes. Cytokinesis begins towards the end of this stage as the parent cell cytoplasm divides which also continues at telophase.

Telophase: This is the final phase of Mitosis where two separate nuclei are formed and Cytokinesis takes place to complete the division of the cell to form two daughter cells having the same number of chromosomes. These cells are genetically identical to the original parent cell.

5 0
3 years ago
Compare structure to function of organs in a variety of organisms
exis [7]
Body organs can be interrelated with other organisms since they are somehow morphologically and physiologically the same.

1. Brain, the brain for most animals are the same, serves the function the same and acts for the many functions of an organism, similarly. This vital organ plays on action-response behavior, management and primal survival instinct, although somehow it's different in structure from the other organisms.
2. Stomach, is an organ wherein the food that is taken in from mouth or opening of a cavity is stored for a short time and is prepared for digestion and metabolic process in the digestive tract or G.I. tract.

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4 years ago
What is the most powerful respiratory stimulant in a healthy person? what is the most powerful respiratory stimulant in a health
Lelu [443]
The correct answer is the arterial blood carbon oxide level. 
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4 0
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Termination of DNA synthesis in E. coli and humans differ significantly because of the genomic structures involved, namely a cir
Marina86 [1]

Answer:

Main protein in ending high fidelity in E. Coli is the Tus protein that binds to Ter sequences in order to prevent replication forks from passing through the end region. In the Ter sequences, the Tus protein blocks replication by establishing a close association with a particular G-C base pair.

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3 0
3 years ago
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atroni [7]

Answer:

The correct answer is Option B (Carrying out research). The step that follows this step involves forming B.a conclusion

Explanation:

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4. Conducting an experiment to check the hypothesis

5. Analyze the results

6. Publish the results

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4 0
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