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Maksim231197 [3]
3 years ago
9

HELLO PLEASE ANSWER MY QUESTION

Biology
2 answers:
butalik [34]3 years ago
7 0

The antarctic region has been experiencing the ozone hole......

trapecia [35]3 years ago
6 0

The Answer is Antarctica


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Taylor had a serious condition that required removal of the upper third of his small intestine. Based on this information, is Ta
Scorpion4ik [409]

Answer:

Yes, Taylor is at risk for developing multiple nutrient deficiencies since most of the nutrients are absorbed in the upper small intestine.

Explanation:

The small intestine in the gastrointestinal tract has three parts: duodenum, jejunum, and ileum. Most of the digestion and the absorption of nutrients from the digested food occurs in the small intestine.

The removal of the upper part of the small intestine during surgical procedures such as gastric bypass surgery often results in multiple nutrient deficiencies as it alters the natural absorption of nutrients. The common nutrient deficiencies include vitamin B12, calcium, vitamin D, iron, folate, zinc, copper, etc. These deficiencies may lead to other problems like anemia, osteoporosis,  encephalopathy, peripheral neuropathy, etc.

Vitamin B12 is required for the functioning of the nervous system and for the growth and replication of cells. The absorption process of vitamin B12 primarily takes place in the duodenum and ileum of the small intestine. The removal of that part of the small intestine interferes with the natural absorption of vitamin B12 and it results in complications like cognitive difficulties, anemia, neuropathy, etc. The duodenum and jejunum of the small intestine have an important role in iron and copper absorption. Iron deficiency can cause anemia, fatigue and copper deficiency may cause increased muscle tone, difficulty in walking, neuropathy, skin changes, psychiatric disorders, etc. Most of the ingested calcium is absorbed primarily in the duodenum of the small intestine and its deficiency often results in osteoporosis, reduced bone growth, etc. The folate and zinc absorption takes place across the intestinal walls. The reduced zinc absorption causes folate deficiency and it leads to birth defects, decreased erythropoiesis, megaloblastic anemia, neurologic problems, etc.

4 0
3 years ago
DNA sequences can act as "tape measures of evolution". Scientists analyzing the human genome sequence were surprised to find tha
jenyasd209 [6]

Answer:

Non-coding DNA regions play important roles in regulating transcriptional activity by encoding different types of non-coding RNAs (ncRNAs), acting as scaffold attachment regions, acting as enhancer specific regions, etc.

Explanation:

Historically, it had been believed that non-coding DNA sequences were 'junk DNA' since they don't encode for proteins (beyond the sequences that are transcribed into functional non-coding RNAs, i.e., transfer RNA and ribosomal RNA). However, in the last years, it has been shown that non-coding DNA sequences play critical roles in regulating gene expression and genome function. For example, evolutionary conserved non-coding RNAs (ncRNAs) with regulatory roles on gene expression such as, for example, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) have been mapped in non-coding DNA sequences, thereby evidencing the functional significance of these regions. In consequence, the conservative nature of certain non-coding DNA sequences evidence that mutations in such regions may have significant deleterious effects, and thereby they could have a negative impact on the fitness of the individual.

7 0
4 years ago
Using technology, scientists are now able to use genetic information to classify new species. What is the likely impact of this
DanielleElmas [232]

The answer is <em><u>not</u></em> Organisms would be classified based only on physical characteristics!!

I strongly feel that it would be....

<em>--the existing classification system may change to accommodate the new information.--</em>

<em>Reason:</em> Some things would not just be classified by appearance. Rather, this would add more possibilities to classification. We know that plants and dogs look nothing alike yet they are still related through the Domain (Eukarya).

I also took this test and relied on the other answer, sadly, it was incorrect.

I hope i could help! Let me know if this is incorrect. ~ Ninja Cat :D

7 0
3 years ago
An area in a forest was cleared to build a road. Which two of the following will be likely effects on the ecosystem?
Tresset [83]
Animals will migrate to other regions in search of food
The new species will evolve to survive in the deforested land

It's highly unlikely the animals will immediately adapt and the number of trees is decreasing because they're being cut down. Unless the question explicitly states that trees are being planted to replace those being lost.
6 0
4 years ago
Read 2 more answers
A cell of the testes in men or ovaries in women duplicates its chromosomes and then divides twice during _____________, thus for
timurjin [86]

Answer:

Meiosis

Explanation:

Meiosis is a cell division that results from sexual reproduction where half the chromosome of each parent cell contribute its genetic make up resulting in four haploid, genetically different gamete, cells. These are sex cells that determines the gender of a baby.

As part of this process DNA replication first occurs, followed by the two cell divisions, meiosis I and meiosis II, giving rise to four haploid daughter cells different from their parent cells.

8 0
3 years ago
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