The right answer is b.transport of respiratory gases.
Breathing is the process by which oxygen from the air gets into your lungs and gets into your body. Our lungs take oxygen from the air and carry it into our bloodstream, which carries it into the tissues and organs that allow us to walk, talk and move. Our lungs also remove carbon dioxide from our blood, through the air we breathe.
The transport of respiratory gases is provided by the blood.
* Oxygen is transported for about 99% in bound form to hemoglobin present in red blood cells.
* Carbon dioxide is transported for about 20% in bound hemoglobin form, the remainder being either dissolved in the plasma or as bicarbonate ion due to its hydration.
The term _______________ includes all of human existence prior to the emergence of writing
A species of seaweed and coral are in competition for sunlight and space. Which of the following best describes this relationship?
Harmful, because the coral will eat the seaweed
Harmful, because there will not be enough sunlight and space for both of them
Helpful, because they will share the space and both benefit from the interaction
Helpful, because the coral will benefit and the seaweed will not be affected
Answer:
Harmful, because there will not be enough sunlight and space for both of them. (B)
In earth's history there has(have) been ____ major extinction event(s) leading to the loss of 50% or more of the species present, not counting the current mass extinction.
An individual has sarcopenia. in order to prevent this condition from becoming any worse, what action should be taken?a.decrease the amount of time spent exercising each weekb.participate in more activities like weight trainingc.cut back on the use of heavy weightsd.increase supplements and eat a healthier diet
Answer:
Participate in more activities like weight training
Explanation:
Sarcopenia may be defined as the loss of degeneracy in skeletal muscle. Sarcopenia is the component cachexia and frailty syndrome. The muscle size is decreased on an individual suffering from sarcopenia.
The main risk factor for sarcopenia is the lack of exercise in individual. The sarcopenia condition can be improved by participating in exercises like weight training, lifting and running.
Thus, the correct answer is option (2).
Name two places you would find epithelial tissue.
15. Use the chart below to determine the amino acid sequence of the following strand of mRNA.
mRNA strand: AUGAAGGGCUGA
Amino Acids:
In order to read the information from a copy of mRNA, we need to read three bases one at a time. This set of three bases is called as a codon and each codon is specific for a particular amino acid. Let's put a gap between the codons, so that we could read them easily and find the respective amino acid.
mRNA strand: AUG AAG GGC UGA
amino acids: Methionine Lysine Glycine STOP codon
So there are three amino acids and one stop codon, which is like a signal for the cell to stop translation.
After reviewing the 24-hour urine collection reports of a client with kidney dysfunction, the nurse suspects diabetes mellitus. which finding supports this suspicion?
Why are most fertilizers rich in nitrogen and phosphorous?
The _____ girdle is also known as the shoulder girdle
This bonds to cytosine (C) in DNA.
Answer: Guanine
According to Chargaff's rule, the base pairing in the DNA and RNA is fixed. Adenine always pairs with Thymine in DNA and Uracil in RNA. Guanine pairs up with cytosine. This complementary base pairing is universal and constant. That's why amounts are also equal. It means if cytosine is 20% in any DNA sample, then amount of guanine would be 20% as well.
In the structure of DNA, cytosine (C) always bonds with the base guanine (G). The specificity of this pairing is due to distinct hydrogen bonding patterns which enable the creation of three hydrogen bonds between them. These base pairings are vital for DNA replication and transcription.
Explanation:In the structure of DNA (deoxyribonucleic acid), the nitrogenous base cytosine (C) always bonds with another base named guanine (G). This specific pairing is due to the hydrogen bonding patterns of these molecules, which allow for three hydrogen bonds to form between them. These base pairings, including C-G and A-T, are essential for the accurate replication and transcription of DNA.The molecule that binds to cytosine (C) in DNA is called guanine (G). Guanine is one of the four nucleotide bases found in DNA, along with adenine (A), thymine (T), and cytosine (C). These bases form hydrogen bonds with their complementary base pairs to maintain the double helix structure of DNA.
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The predominant greenhouse gas produced by human use of fossil fuels is __________.carbon dioxidenitrous oxidewater vapormethane
Which is not a characteristic of life
Composed of cells
Maintains homeostasis
Sensitivity
Uses energy
Answer: Sensitivity.
Explanation:
Sensitivity can be defined as the conditions in which we observe the response of the living organism soon after it is subjected to stimuli.
This character cannot be to define where it is a characteristic of life or not because plants are also living form of life but they do not sensitive to many of the stimuli.
There are many more living forms of life that are not that much sensitive towards the stimuli.
Why might one variation have a selective advantage over another variation?
Variation becomes an advantage if neither of the individuals is having detrimental traits. If neither of the individuals is having the detrimental trait then that means that a bad gene is being introduced in the population. Other times, variation is an advantage since it provides the population with better traits and devices to use on their environment. This is crucial since the environment changes over time.
________ were first identified in cancer-causing viruses and can induce ________ in infected cells. ________ were first identified in cancer-causing viruses and can induce ________ in infected cells. segmented genomes; reassortment glycoprotein spikes; syncytia formation t antigens; lysis oncogenes; transformation herpes viruses; lesions
What do you think might happen if someone had a mutation that didn't allow his or her body to make carbonic anhydrase?
Answer:
In absence of carbonic anhydrase enzyme, transport of CO2 gas through blood plasma in form of bicarbonate ion would not occur. The person would also suffer from acidosis.
Explanation:
Carbonic anhydrase catalyzes the reversible reaction of water with CO2 and leads to the formation of carbonic acid which in turn dissociates into hydrogen and bicarbonate ions.
The enzyme present in RBCs maintains the diffusion gradient for the movement of CO2 into and out of the RBCs. Movement of bicarbonate ion out of RBCs is followed by the movement of chloride ions into RBCs.
In capillaries present around the alveoli, CO2 is diffused out of the plasma and enters the alveoli while the reaction sequence is revered at tissues and CO2 enters the RBCs.
Therefore, if carbonic anhydrase is absent or nonfunctional, the diffusion gradient for CO2 would not be formed. It would prevent the transport of CO2 gas in blood plasma from tissues to the lungs. The protons released in the reaction also serve as a buffer to maintain the pH of extracellular fluid.
At kidneys, reduced secretion of H+ into the urine and reduced reabsorption of Na+ and HCO3 − into the blood would cause acidosis.
The absence of this enzyme leads to different types of diseases in the body.
If someone had a mutation that didn't allow the body of an individual to make carbonic anhydrase then the carbondioxide that is produced in the respiration reaction will not converted into carbonic acid and bicarbonates. This conversion is important in order to remove the carbondioxide which is a waste material from the body.
The person experiences various problems due to lack of this enzyme such as excess ammonia in the blood, acid-base balance in the blood and low glucose in the blood so we can say that absence of this enzyme creates big problems in the body.
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Which of the following is an example of haploid cells?
Cardiac Cells
Nerve Cells
Muscle Cells
Gametes
The right option is; Gametes
Gametes is an example of haploid cells.
Haploid cells are cells that contain a single complete set of chromosomes. Haploid cells in humans and other mammals, are usually the sex cells (egg and sperms) which are also called gametes that are produced during meiosis (a type of cell division). When the egg is fertilized by a sperm, it produces a diploid cell. Gametes contain 23 chromosomes in humans.
How can I prepare for a quarter final in my online high school biology class?
To prepare for a biology quarter final, understand all concepts thoroughly, study as if in a classroom setting, manage time effectively, use active learning techniques, and review results post-quiz.
Explanation:To prepare for a quarter final in an online high school biology class, it is crucial that you fully understand all of the concepts presented. Treat the preparation as if the quiz were to be proctored in a traditional classroom setting. This mindset will help ensure that you allocate enough time and effort into studying. Here are some strategies to effectively prepare:
Review all lesson materials thoroughly, including lecture notes, textbook chapters, and any supplemental resources provided.Practice with quizzes and tests to gain familiarity with the format and type of questions that may be asked.Create a study schedule to manage your time efficiently and prevent last-minute cramming.Engage in active learning techniques such as flashcards, teaching the material to someone else, or drawing diagrams to reinforce the information.Contact your teacher or classmates for clarification on concepts you find challenging.During the quiz, keep track of the time to ensure you are able to complete all questions. Afterward, look over your full quiz results after you have submitted it for a grade to identify areas that need improvement or that you have mastered. This will help in future assessments and understanding of the subject material.
According to the theory of _____, today's organisms evolved from past organisms.
common descent
recombination
continental drift
plate tectonics
common descent is the answer
The image shows point and non-point sources of water pollution. Which two soi fed are point sources of water pollution?
Answer:
Coal Burning
Factory
Explanation:
Factories and sewage treatment plants are two common types of point sources.
The two soi fed that are point sources of water pollution are coal-burning power plants and factories.
What is water pollution?Water contamination is the tainting of bodies of water, typically as a result of human activity, which has a detrimental impact on their uses. Aquifers, reservoirs, lakes, rivers, seas, and groundwater are all examples of bodies of water.
Whatever name you give it, coal still causes pollution. It actually produces the most pollution when producing power.
Massive volumes of pollution are released during the mining process and subsequent burning of coal in power plants, endangering human health and accelerating climate change.
Therefore, coal-burning power plants and industry are the two main sources of point pollution in water.
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Amoeba paramecium and spirogyra are diverse. why then are they all classified as protists
Despite their variety, protists including amoeba, paramecium, and spirogyra are classified together due to their same Eukaryotic nature and similar cell structures and reproductive strategies. They all belong to one of the six 'supergroups' under the Eukaryota domain, which showcases a monophyletic behaviour, meaning they evolved from a common ancestor.
Explanation:Amoeba, paramecium, and spirogyra are classified as protists and are considered diverse due to their unique morphological and biological characteristics. Despite their variety, they fall under the 'protists' category as they possess similar cell structures and reproductive strategies and are eukaryotic microorganisms that are not plants, animals, or fungi. Furthermore, the classification of protists stems from the principle of 'convergent evolution' which indicates that organisms exhibiting similar morphological features may have evolved analogous structures due to similar selective pressures, rather than because of a recent common ancestry.
The entire domain Eukaryota, which includes protists, are grouped into six 'supergroups' that consist of all of the protists along with plants, animals, and fungi. Despite the complexity of protist classification due to their diverse nature, it's understood that all the organisms within each 'supergroup' are most closely related to each other than organisms outside the group. In this context, the supergroups exhibit monophyletic behaviour, meaning they evolved from a single common ancestor, and protozoans like amoeba, paramecium, and spirogyra share this evolutionary history, allowing them to be classified under the protist group.
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The nurse cares for the client diagnosed with second-degree atrioventricular block, mobitz type ii. while assessing the client, the nurse notes a heart rate of 34, the client reports dizziness, and passes out. the nurse places the client on a cardiac monitor. which is the next nursing action?
The purpose of a transcutaneous pacemaker in medical practices is to regulate the heartbeat of a patient so that when they experience any sort of medical emergency there is no problem. Seeing as the condition of the patient is deteriorating, the standard practice is to place them on a cardiac monitor to better assess the situation and form a plan of action. Which is why the transcutaneous pacemaker is important at this stage.
Some flowering plants have a long pistil that reaches way above the lower petals. What’s the purpose of this structure?
Answer:
To receive pollen grains
Explanation:
A flower is a modified shoot which is meant for reproduction. The stamen is the male reproductive organ and the pistil is a flower's female organ. A pistil is located in the centre of the flower and is surrounded by petals, sepals and stamens.
Some flowers have a long pistil that reaches above the petals to receive wind disseminated pollen grains. This helps transfer pollen and fertilize the ova in the ovaries.
While receiving a blood transfusion, a client develops acute dyspnea, generalized urticaria, a heart rate of 128, and a blood pressure of 70/38. what type of reaction does the nurse conclude that the client probably is experiencing?
A health care provider has prescribed triamterene to a male client with renal disease. the client informs the nurse that he is taking potassium supplements to address some heart problems. the nurse would be alert for:
If the patient is taking potassium supplements for his heart problem and the doctor has prescribed triamterene, the nurse should be alert for the increased risk of hyperkalemia or high potassium level in the blood.
Some signs of hyperkalemia includes nausea, slow or unusual heart rate, weakness, or loss of movement and in severe cases, it could result to kidney failure, muscle paralysis, liver disease, irregular heart rhythm, and cardiac arrest. With this, the doctor or pharmacist must be informed to prevent any undesirable outcome.
What type of agent would be most likely to disrupt the structures of microvilli?
Because the surface gravity on the moon is 16 of that on earth how much does a person who weighs 360 newtons on earth weigh on the moon
Please help! I absolutely cannot find anything!!!!! else that will!
Match the number with the correct type of reaction it is.
1. Na+ + Cl- → NaCl
2. CCl4 → C + 2Cl2
3. H+Cl- + Na+OH- → Na+Cl- + H2O
4. ADP + P + E ATP
A. decomposition reaction
B. exchange reaction
C. reversible reaction
D. synthesis reaction,
im getting this straight from the lesson on o dysseyware
1. synthesis reaction
2. decomposition reaction
3. exchange reaction
4. reversible reaction
The graph above was made by a South American biologist in the country of Brazil, after a long study on parrots. About 200 years ago, 90% of Brazil was covered in mature, deep forest. Today, well over half of this forest has been cut to make way for farms. What conclusion could you draw about the parrots in the graph?
B) There are probably less green parrots today than there once were.
C) Blue parrots probably are the best adapted species to live on farms.
D) The blue parrot population has likely increased in the last 200 years.
The answer is B. This is because the graph shows the highest number of green parrots in the 'deep forest' category of environment, whereas the numbers in the 'grassland' and 'scrub forest' are less. Since the forested area in Brazil has decreased rapidly, this means that the preferred environment of the green parrot has decreased, probably resulting in a decline in the green parrot population
B) There are probably less green parrots today than there once were.
There are probably less green parrots today than there once were. With a change in environmental conditions, the parrot populations change.
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In a chemical reaction, activation energy increases the of the reactants. This outcome causes the particles to collide, which results in the of new products.
In a chemical reaction, activation energy increases the temperature of the reactants. This outcome causes the particles to collide, which results in the formation of new products.
What would you expect your tv to be if you inhaled a foreign object which completely obstructed your right mainstem bronchus?
If you inhaled a foreign object and completely obstructed your right mainstem bronchus your TV (Tidal Volume) will become half because only your left one will function.
The tidal volume (TV) is the volume of air that circulates between a normal inspiration and expiration without making an additional effort. The normal value is approximately 500 ml or 7 ml/kg of body weight.