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3 years ago

Name three things atmosphere dose for us

Biology

1 answer:

ahrayia [7]3 years ago

4 0

1.) it provides oxygen for humans and carbon dioxide for plants

2.) it keeps the earth warmer than it would be without the atmosphere

3.) it protects us from radiation and meteoriods

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Amino acid catabolism involves the breakdown of 20 amino acids all of which contain nitrogen but have different carbon skeletons

Alex Ar [27]

Answer:

The overall strategy employed in the catabolism of the carbon skeletons of the 20 amino acids is conversion to citric acid intermediates such as acetyl-CoA

Explanation:

The breakdown of the different carbon skeletons of the 20 amino acids is strategically channelled towards the citric acid cycle. Six major products are obtained in the catabolism of the carbon chain of amino acids and these products all enter the citrc acid cycle. The six major products are acetyl-CoA, α-ketoglutarate, succinyl-CoA, fumarate, oxaloacetate and pyruvate.

The amino acids that are broken down completely into acetoacetyl-CoA and/or acetyl-CoA are said to be ketogenic since they yield ketone bodies in the liver.

The amino acids that are broken down into α-ketoglutarate, succinyl-CoA, fumarate, oxaloacetate and pyruvate can be converted to glucose and glycogen and are said to be glucogenic. Pyruvate can further be converted to either acetyl-CoA or oxaloacetate. Some amino acids though are both ketogenic and glucogenic, e.g. tryptophan, threonine.

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3 years ago

Hypothesis: If the type of the food available changes, then the frequency of beak types will change, because birds with beaks mo

dangina [55]

The correct answer is: If generation 3 had flock distributions similar to those shown in the graph below.

After the change in food, the beak phenotype changes in order to adapt. So, if fruit is removed, the phenotype of birds’ beaks should change according to the change in environment. The graph below shows that there is no change, so it wouldn’t support the hypothesis that food changes beak types.

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3 years ago

Read 2 more answers

4. Analyze Explain why the form of

trapecia [35]

Analyze Explain why the form of reproduction is given below

Explanation:

1.Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete (such as a sperm or egg cell) with a single set of chromosomes (haploid) combines with another to produce a organism composed of cells with two sets of chromosomes (diploid).

2.Sexual reproduction is the most common life cycle in multicellular eukaryotes, such as animals, fungi and plants.

3.Sexual reproduction does not occur in prokaryotes (organisms without cell nuclei), but they have processes with similar effects such as bacterial conjugation, transformation and transduction, which may have been precursors to sexual reproduction in early eukaryotes.

4.In human reproduction, each cell contains 46 chromosomes in 23 pairs. Meiosis in the parents' gonads produces gametes that each contain only 23 chromosomes that are genetic recombinants of the DNA sequences contained in the parental chromosomes. When the nuclei of the gametes come together to form a fertilized egg or zygote, each cell of the resulting child will have 23 chromosomes from each parent, or 46 in total.

5.In plants only, the diploid phase, known as the sporophyte, produces spores by meiosis that germinate and then divide by mitosis to form a haploid multicellular phase, the gametophyte, that produces gametes directly by mitosis. This type of life cycle, involving alternation between two multicellular phases, the sexual haploid gametophyte and asexual diploid sporophyte, is known as alternation of generations.

6.The evolution of sexual reproduction is considered paradoxical, because asexual reproduction should be able to outperform it as every young organism created can bear its own young. This implies that an asexual population has an intrinsic capacity to grow more rapidly with each generation.This 50% cost is a fitness disadvantage of sexual reproduction. The two-fold cost of sex includes this cost and the fact that any organism can only pass on 50% of its own genes to its offspring. One definite advantage of sexual reproduction is that it impedes the accumulation of genetic mutations.

7.Sexual selection is a mode of natural selection in which some individuals out-reproduce others of a population because they are better at securing mates for sexual reproduction.It has been described as "a powerful evolutionary force that does not exist in asexual populations

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3 years ago

A client is admitted to the hospital with a diagnosed bowel obstruction secondary to a recurrent diagnosed malignancy. The prima

Mrrafil [7]

Answer:

Remain with the client and be silent

Explanation:

Bowel obstruction can be explained or described as a situation whereby the intestines, i.e, both small and large intestines are blocked, and thereby, preventing the normal movement of food, liquid or stool in the intestines.

The blockage could result or occur due to tumor, foreign substance or digestive problem.

The Miller-Abbott tube is the tube that was invented or developed to treat the obstruction that is present in both the small and the large intestines. It is used by passing it through the stomach into the intestine.

In this case, the bowel obstruction is caused by recurrent malignancy, that is recurrent of formation of tumor.

The best thing the nurse should do, is to remain silent and with the client, until the client is ready for explanation on the process, and that he/she is in position and capable of inserting the tube.

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3 years ago

Two alternative futures for cells when they reach their size limitation

dimaraw [331]

Answer:

cell cycle (become two cells) or not grow

Explanation:

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3 years ago