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3 years ago

13. If a stream or river stops flowing due to water scarcity, what disease may result from the stagnant water?

2 answers:

6 0

They are exposed to diseases, such as cholera and typhoid fever, and other water-borne illnesses. Two million people, mostly children, die each year from diarrheal diseases alone.

Luda [366]3 years ago

3 0

“Malaria and dengue are among the main dangers of stagnant water, which can become a breeding ground for the mosquitoes that transmit these diseases.”

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Plant and animal cells are complex and contain many structures. a. True b. False

Alex_Xolod [135]

Answer:

false ig because animal cell is not complex(i am not sure)

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3 years ago

Diarrhea is defined by loose, watery stool (poop.) Diarrheal diseases kill millions of people worldwide every year. Describe how

Alex

Answer:

dehydration.

Explanation:

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3 years ago

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Amiraneli [1.4K]

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3 years ago

How does a mutation in the DNA affect the way proteins are made?

Vikentia [17]

Explanation:

B.) A mutation in the DNA results in a change in the mRNA and, ultimately, to a different protein structure.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells.

During the process of cell division, spontaneous changes within the genome can arise. These mutations are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes. There are two types:

somatic: these only occur within certain cells, and arise from environmental factors such as UV light
hereditary: occur within germ cells of the parent and later the fertilized egg which forms a zygote; these are present within all cells of the new organism.

Nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They exist solely to encode and carry out protein synthesis.

The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand in transcription. These are then translated into proteins in ribosomes. Mutations in DNA sequences affect the corresponding mRNA and thus the protein encoded.

They are maintained within cells, as they form new traits called alleles, which may confer adaptations that increase the fitness of a species, along with ensuring survival by conferring a protective advantage.

e.g. sickle cell anemia, a disease caused by a mutation, confers protection against the disease malaria.

Learn more about mutations at brainly.com/question/4602376

Learn more about mitosis at brainly.com/question/4303192

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

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3 years ago

Which of the following statements about hormone transport and distribution is not true? a. free hormone concentration is not inf

adelina 88 [10]

E . all of the statements are true hope i’m correct

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3 years ago