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nignag [31]
3 years ago
6

Which of the following is true of malignant tumors?

Biology
2 answers:
kodGreya [7K]3 years ago
6 0

Answer:

Malignant tumors are cancerous. They develop when cells grow uncontrollably. If the cells continue to grow and spread, the disease can become life threatening. Malignant tumors can grow quickly and spread to other parts of the body in a process called metastasis.

astra-53 [7]3 years ago
3 0

Answer:

they can cause tumours in other parts of the body

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The side chain of serine contains oxygen. water-soluble proteins often contain serine. where would the serine side chain most li
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Answer;

-On the polar end or the hydrophillic end of the protein.

Explanation;

-Each amino acid has at least one amine and one acid functional group as the name implies. The different properties result from variations in the structures of different R groups.The R group is often referred to as the amino acid side chain.

-Side chains which have various functional groups such as acids, amides, alcohols, and Amines will impart a more polar character to the amino acid. Polar amino acids include serine, threonine, asparagine, glutamine, histidine and tyrosine.

Therefore; serine being a polar or hydrophillic  amino acid will be found on the polar side chain of the protein.



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3 years ago
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Which of the following is/are true?
LenKa [72]

Answer: Option A ,Band C.

Explanation:

Sympatric speciation is the evolution or isolation of new species from the original populations of species occupying in the same geographical area. Sympatric speciation commonly occur due to sexual selection of mates can cause reproductive barriers or isolation which keep gene pools separate. A plant with extra set of homologous chromosomes is an example of sympatric speciation.

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3 years ago
Describe the uses of model organisms
Arlecino [84]
A model organisms is a species that has been widely studied, usually because it is easy to maintain and breed in a laboratory setting and has particular experimental advantages. model organisms are non-human species that are used in the laboratory to help scientists understand biological processes.

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Which of these is NOT a characteristic of a meteorite?
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Several fish species became extinct millions of years ago. The graphs provided below show the distribution of fossils of these f
cestrela7 [59]
1. Explain why the distribution of fossils in Figure 1 supports the hypothesis that the extinction of these species was the result of a sudden environmental change.
This hypothesis can be supported because all the fossils accumulate almost at the same age of the rock layer. That is, all the fossils died almost at the same time.

2. Describe an environmental change that could have produced this type of fossil distribution.
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3. Explain why the distribution of fossils in Figure 2 supports the hypothesis that the extinction of these species was the result of a gradual environmental change.
This is because the fossils accumulate at different ages of the rock layer, that means, the species dying over time. The gradual descent of the fossils is observed.

4. Describe an environmental change that could produce this type of fossil distribution.
For example, if a climate change occurs - the temperature increases or decreases - it can cause the trees or plants to die and all the animals in the ecosystem also die when they have no food. But this process is sequential, so the change can take years, centuries or even millions of years.

I hope this can help you.
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