When does oxyhemoglobin form during respiration? Group of answer choices during internal respiration immediately after carbon dioxide enters the blood when the chloride shift occurs during external respiration

Answers

Answer 1

Answer:

Answer:

during external respiration

Explanation:

Oxyhemoglobin is a type of hemoglobin carrying oxygen which is bright red in color. In the blood, it's major function is to carry oxygen molecules throughout the body.

Oxyhemoglobin is formed during external respiration. External respiration also known as breathing occurs in the lung. During external respiration, there is an exchange of oxygen and carbon-dioxide between the cells of the body and blood vessels. During breathing, oxygen diffuses into the blood, the oxygen then binds with heme in the hemoglobin found in erythrocytes to form oxyhemoglobin.

Answer 2

Answer:

Answer:

during external respiration

Explanation:

Oxyhemoglobin is a protein formed when hemoglobin is combined with an oxygen molecule during lung respiration, also called external respiration. Its function is to transport oxygen throughout the body.

External breathing is performed when we breathe in oxygen into the body. This oxygen will be used for cells to perform cellular respiration that will be responsible for exhaling carbon dioxide out of our body.

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You cross two red griffins with blue eyes and produce offspring that are: red with blue eyes, red with green eyes, white with blue eyes, and white with green eyes. Assuming that the genes for body color and eye color are on different chromosomes, what is the ratio of these offspring’s phenotype?

Answers

Answer:

The reason for the offspring to present these genotypes is that during the formation of the gametes, the alleles separate and are inherited independently, therefore they can generate several different phenotypic combinations.

Explanation:

In order for an offspring to present very different phenotypes, as shown in the question above, it is necessary that the two red griffins with blue eyes that were crossed are heterozygous. Thus it will be possible for the offspring to present a wide variety of phenotype, according to Mendel's second law.

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Which characteristics of DNA polymerase I raised doubts that its in vivo function is the synthesis of DNA leading to complete replication?

Answers

The question is incomplete. The complete question is as follows:

Which characteristics of DNA polymerase I raised doubts that its in vivo function is the synthesis of DNA leading to complete replication?

its composition of a single polypeptide chain.

deficiency of enzyme in some organisms that are still capable of DNA synthesis.

requirement of Mg2+ presence in order for the enzyme to work.

low stability under normal physiological conditions.

Answer:

Deficiency of enzyme in some organisms that are still capable of DNA synthesis

Explanation:

The DNA polymerase I may be defined as the important enzyme that play an important role in the DNA replication of prokaryotes. DNA pol I is the replicating enzyme, DNA repair enzyme and can also acts as the exonuclease.

DNA pol I has been studied invitro and Arthur Korenberg explain the discovery of the DNA pol I. This DNA pol I plays an important role in DNA repair rather than the replication process. This explained invivo by the fact that some in some organisms the deficiency of this enzyme do not halt the process of replication. If the DNA pol I acts as the main replaicating enzyme, the DNA synthesis must be stopped in the organisms that lack DNA synthesis.

Thus, the correct answer is option (2).

Which of the following describes a negative feedback loop?A. When the heart rate is too high, the body releases hormones that continually increase the heart rate higher.
B. When a pregnant woman is in labor, the body releases hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C. When blood sugar concentration is above normal, the endocrine system releases hormones that lower the blood sugar concentration until it reaches a normal level, and the release of the hormones slows.
D. When a person is jogging, the body releases hormones that continually decrease the rate of oxygen supply to the legs.

Answers

ANSWER is A

When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.

Explanation:

i believe the answer is b

A few organisms have evolved to use mostly asexual reproduction. what must be true about these?

Answers

I cannot find the statements, I will explain the asexual reproduction so you can answer the question by your own:

Asexual reproduction is as simple a cell multiplication as a photocopying machine reproduced in one or more copies an original document. In all cases, we obtain a clone of cells all having the same hereditary information.

The great advantage of asexual reproduction is its speed.
It produces a new organism that is genetically identical to the parent you do not have to look for a partner
Energy can be deployed to produce potentially large numbers of offspringOffspring are usually adapted to their environment by the success of their parent
Helps to quickly and effectively colonize a parent-friendly habitat, thanks to a large number of descendants he can breed in a short timeThe offspring are often already multicellular and more viable.

The inconveniences are:
Does not cause a genetic diversity of organisms of the same species.
The species does not adapt at all or very slowly depending on the changing circumstances.
There is only one parent to care for the offspring.
The parent disappears sometimes because his body is no more (binary fission, fragmentation).
An asexual species may be suddenly destroyed by a disaster that affects all genetically identical organisms of this species.

The poly(A) sequence that is added to RNA during processing: helps prevent rapid breakdown of the messenger RNA. is needed for ribosomes to attach to messenger RNA. aids in the accuracy of translation of the messenger RNA into protein. helps prevent formation of complex three-dimensional structures in the messenger RNA.

Answers

Answer:

Option A, helps prevent rapid breakdown of the messenger RNA

Explanation:

The poly-A tail is a chain of adenine nucleotides which when get attached to the messenger RNA during RNA processing enhances the stability of the molecule and therefore prevents it from breaking down. This is required because after the transcription of gene in a eukaryotic cell, newly formed RNA molecule undergoes several modifications. It also helps is preventing the new RNA from enzymatic degradation in the cytoplasm and translation.

Hence, option A is correct

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Answers

Answer:

i dont know

Explanation:

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