Where does oxygen move from the respiratory system to the circulatory
system?
A. In the pulmonary artery
B. In the vena cava
C. In the alveoli
D. In the liver
Answers
Answer: Alveoli
Explanation: Alveoli of lungs are surrounded by extensive blood capillaries. The partial pressure of oxygen in the alveoli is higher than the blood entering the pulmonary capillaries, hence oxygen moves into the blood. Carbon dioxide in the lungs simultaneously diffuse out of the blood into the alveolar space.
Oxygen moves from the respiratory system to the circulatory system in the alveoli. The correct option is C.
What are alveoli?Alveoli are tiny round sac-like structures present at the end of the bronchioles. Bronchioles are branch structures present in the lung, they are the main site of exchange of oxygen and carbon dioxide.
The transfer of oxygen from the respiratory system to the circulatory system is done by alveoli.
Thus, the correct option is C. In the alveoli.
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Related Questions
What must happen before mistosis can being?
Answers
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Importance of freezing stem cells in South Africa?
Answers
Answer:
Stem cells are special cells found in the human body which has the ability to change into different cell types and functions.
They are expensive in South Africa and are freezing the stem cells helps in the preservation of the cells for research works in the medicine. They are also used in the treatment of different illnesses which requires cells and tissue transplants.
Which is a density-independent factor?
Answers
which is a gemete? A) Embryo B) Estrogen C) Cervix D) Egg
Answers
A nonnative species of squirrel is introduced into a forest. Which would most likely prevent this squirrel from becoming an invasive species?
A. There are no natural predators for the squirrel in this ecosystem.
B. The squirrel must compete with stronger organisms for resources.
C. The forest ecosystem has very low biodiversity.
D. The squirrel is able to reproduce quickly in this ecosystem.
Answers
Answer:
B
Explanation:
competing with stronger organisms makes it difficult for the squirrel to be invasive
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If a nonnative species of squirrel is introduced into a forest, one of the things that can prevent it from reaching an invasive status is if the squirrel competes with stronger organisms for resources.
Competition is one of the factors that limit the growth of organisms' populations.
All other factors being equal, a combination of some of the following will make the squirrel attain an invasive status:
The absence of natural predators means that the squirrel's population is not threatened in any way.Low biodiversity in the forest ecosystem means that the squirrel will experience very little to no competition for resourcesReproducing quickly in the ecosystem means that the population will boom in no time.More on invasive species can be found here: https://brainly.com/question/22117564
Carbon can be found in shells and
sedimentary rock at the bottom of
oceans in the form of
Answers
Answer:
The correct answer to the following question will be "Limestone".
Explanation:
Carbon dioxide has always been typically accumulated throughout the ocean by organic compounds, whether as gasification agent or, throughout a longer period, as carbonate rocks elsewhere in the seafloor.When individuals die, everyone's shells fall straight to the bottom including its ocean's surface and thus become sediments including limestone as well as organic cement.So that the above would be the right answer.
Answer:
a
Explanation:
The ocean and the atmosphere serve as long-tem storage areas for carbon and others
storage areas called?
Answers
Answer: reservoirs
Explanation: because
Answer:
Resivorse
Explanation:
Which types of measurement are used to describe quantities of heat and temperature ?
Answers
Answer:
There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.
Explanation:
Hope this helps you!
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Change the stimulus to read: Edward Jenner?'s smallpox inoculation experiment was based on his observation that
dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
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Submit
Answers
Answer: It's A
Explanation:
The proximate (immediate) source of energy for oxidative phosphorylation is _____. The proximate (immediate) source of energy for oxidative phosphorylation is _____. kinetic energy that is released as hydrogen ions diffuse down their concentration gradient ATP synthase NADH and FADH2 substrate-level phosphorylation ATP
Answers
The source of energy is the electron derived from the FADH₂ and NADH combined with oxygen.
What is oxidative phosphorylation?The oxidation of substrates and the synthesis of ATP are processes that are connected during oxidative phosphorylation, which takes place in the mitochondria of all animal and plant tissues.
The two carrier molecules NAD or FAD transfer hydrogen ions (or electrons) to the electron transport pumps as the Krebs cycle is running. ATP, NAD+, and FAD+ are the products of oxidative phosphorylation.
The source of energy is the electron derived from the FADH₂ and NADH combined with oxygen. The kinetic energy that is released as hydrogen ions diffuse down their concentration gradient ATP synthase NADH and FADH2 substrate-level phosphorylation ATP
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Which correctly lists three main causes of deforestation?
A.) air pollution, mining, logging
B.) mining, cattle ranching, logging
C.) cattle ranching, water pollution, air pollution
D.) water pollution, logging, mining
Answers
Answer:
B
Explanation:
Took the test 2021
What role to 'epigenetics' have to do in genetic expression?
Answers
Answer:Epigenetics is the study of heritable changes in gene expression (active versus inactive genes) that do not involve changes to the underlying DNA sequence — a change in phenotype without a change in genotype — which in turn affects how cells read the genes.
Explanation:Epigenetics is the study of heritable changes in gene expression (active versus inactive genes) that do not involve changes to the underlying DNA sequence — a change in phenotype without a change in genotype — which in turn affects how cells read the genes.
Which process produces clones?
Answers
Answer:
asexual reproduction
Explanation:
What is the most common
way that active transport
occurs in the cell?
A. Particles flow into the cell through
holes in the cell membrane.
B. Pumps embedded in the cell membrane
use energy to bring particles into the cell.
C. Particles simply follow the
concentration gradient.
D. Organelles leave the cell, gather
particles, and bring them back into the
cell.
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Answers
Answer:
Es la B.
Explanation:
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Aside from being a good marksman, what is the key to making a clean kill?
A
luck
B
patience
C
range
D
weather
Answers
Answer:
C. range
Explanation:
Being a good marksman requires a very good range of whatever target you intends to shoot.
1. It is the state of matter that is very compressible a. liquid b. solid c. gas d. Plasma NEED HELP GUYS
Answers
Answer:
C
Explanation:
In general, Gases are the most compressible and solids are the least compressible.
Answer:
In general, Gases are the most compressible and solids are the least compressible.
Explanation:
The main reason for this is the intermolecular forces which determine the physical state of a substance by altering the intermolecular spaces. hope this helps you :)
This lab activity is designed to explore the effect of two substances on the heart rate of a Daphnia magna specimen. One of the activities in this lab is to measure the heart rate when the Daphnia is exposed to alcohol. In the experimental setup, what would be the independent variable?
Answers
Answer is given below
Explanation:
Heart rate was studied in this experiment and is the dependent variable studied or measured. This is a dependent variable. An independent variable is a variable whose modulation is not affected by any other variable in the experiment. Here is the alcohol independent variable. Other substances such as intelligence are also independent variables.the main respiratory surface in man is; Select one: A. alveolar wall B. internal nostrils C. bronchial wall D. tracheal wall
Answers
Answer:
answer is alveolar wall
Answer:
Option A
Explanation:
Alveolar Wall forms the main respiratory surface where exchange of gass happens.
You wish to determine the concentration of bacteria in a liquid sample. You measure the concentration by direct microscopic observation and by the plate count technique. Which method would give you a more accurate count of viable (i.e. living) bacteria in the sample
Answers
Answer:
The correct answer to the question above is "PLATE COUNT TECHNIQUE"
Explanation:
DIRECT MICROSCOPIC OBSERVATION is the method of estimating the number of microorganism using microscope. Samples to be estimated are placed on microscope slides which allow few cells in a small volume to be counted. Then, the value determined is used to estimate the total number of cells mathematically. It is only difficult to aee small cells which may affect precision.
VIABLE COUNT is the estimation of the living cells in a given sample.
PLATE COUNT TECHNIQUE is used to estimate the number of viable cells that are present in a given sample of actively growing or dividing cells based on bacteria cells found on agar plate. A sample to be counted is diluted in a solution that will not kill the microorganisms, this is done to enable accurate counting as only living bacteria will be counted.
From Earth, Jupiter appears to be very bright in the night sky because it is Select one: a. very large and reflects a lot of sunlight. b. one of the hottest planets in the solar system. c. almost as close to Earth as Venus, the brightest planet. d. None of these. Clear my choice
Answers
Answer:
1
Explanation:
why ?
size - very large compared to other planets
Its relative closeness (compared to other stars)
High reflective albedo of the light colored clouds
The fact that it is never inside Earth's orbit means that it is always mostly illuminated from our point of view regardless of relative positioning.
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Jupiter looks so vivid because of its massive length, and due to the fact the clouds that pinnacle its atmosphere replicate greater than half of the sunlight that moves them.
So the best solution is choice a. very huge and reflects a variety of daylight.
How brilliant is Jupiter in the nighttime sky?With a magnitude of -2.nine, Jupiter is the 0.33 brightest item in the night skies. simplest Venus and our moon are brighter. that still way it is very smooth to identify with the eye.
Why does Jupiter seem brighter than Mercury?Mercury seems so shiny because it's fairly close to Earth and to the sun. So it gets a whole lot of daylight, and it displays a good amount of it in our path. Jupiter looks so vibrant due to its massive length, and due to the fact the clouds that the pinnacle of its atmosphere mirror extra than half of the sunlight that strikes them.
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The nurse is observing a set of new parents to ensure that they are bonding with their newborn. What displayed behavior would indicate that the parents bonding is maladaptive?
Answers
Answer:
Neglecting the child
Explanation:
Maldatives behaviors are the behaviors that do not facilitate the parent-infant bonding, meaning that they are those behaviors that are hindering the process. And the best way of removing that is to encourage the behaviors that counter them.
The process of pointing out the responsiveness of the infant is a positive strategy for facilitating parent-infant attachment. Telling the mother that she must pay attention to her infant may be perceived as derogatory and is not
appropriate. Educating the mother in infant care is important; however, pointing out the responsiveness
of her baby is a better tool for facilitating mother-infant attachment. .
What is a nebula? A. The core of a massive star B. A cloud of gas and dust in space C. A swirling disk with a lot of gravity D. The debris remaining after a supernova
Answers
Answer:
its B. a cloud of gas and dust in space
Nebula is a cloud of gas and dust in space. The correct option is B.
What is special regarding nebula?A nebula is a distinct luminescent component of the interstellar medium that can be composed of ionized, neutral, or molecular hydrogen, as well as cosmic dust.
When stars form within a nebula, they emit a stream of charged particles known as stellar wind.
Massive stars and young stars have stellar winds that are much stronger than the Sun's.
When the wind collides with the gas in the nebula, it creates shock waves or hydrodynamic instabilities, which shape the gas clouds.
Nebulae are frequently star-forming regions, as seen in the Eagle Nebula's "Pillars of Creation."
Thus, the correct option is B.
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Create three relevant questions that you would like answered or clarified about the role of DNA and chromosomes. Focus on the following areas as you generate questions: The cause and effect relationship between the genetic code and gene expression Mechanisms of gene regulation The role of DNA segments that do not code for proteins
Answers
Answer:
Chromosome is made up of protein and DNA molecule.
Explanation:
Chromosome is a thread like structure which is formed from protein and one molecule of DNA. It is present inside the cell of both plant and animals. DNA is a heredity material which contains all characteristics of an organism. Genetic code are codes which contains information about the formation of a specific protein while gene expression is a process in which genetic code is used for the synthesis of proteins. There is no specific role of DNA segments that do not code for proteins but some scientist belief that it control the activity of the gene.
what happens if stomach is removed
Answers
Answer: you die
Explanation:
Answer:
What happens after your stomach is removed?After surgery, the way you eat and digest food will change, and it’s important that you carefully follow your doctor’s recommendations for eating to ensure your body is absorbing much-needed nutrients.“It is important to try to consume as many calories as possible to minimize rapid weight loss in the first few months following surgery, and to take in nutrients that the body needs to aid in the healing process,” said Jeffrey M. Farma, MD, FACS, a surgical oncologist at Fox Chase Cancer Center.“Eventually the desire to eat and enjoy food will return,” he said.Eating after your gastrectomyWithout your stomach, you aren’t able to handle regular portions of food and may not even feel hungry. Even if you are not hungry, it is important to remember that nutrition is a vital part of your health.You will need to eat smaller amounts of food more often – six to eight small meals a day. Your doctor or nutritionist may also recommend that you stay upright for some time after eating. Your health care team can help you adjust your diet if you are having problems eating.Some patients may experience a condition called dumping syndrome. When part or all of the stomach is removed, the food that is swallowed quickly passes into the intestine, leading to problems with nausea, diarrhea, sweating and flushing after eating. There are treatments to help with these symptoms.“Since the stomach is no longer there to do the grinding and breakdown of food, it is important that patients take small bites and thoroughly chew the food,” Farma said.Maintaining your weight without a stomachConsuming enough calories to return to your favorite activities will happen over time. Nutritious, high calorie, low sugar foods provide the best bang for the bite. Calories are your body’s first priority.“You will not be able to eat the same quantity of food as you did before your surgery, so it is important to get the calories in smaller amounts of high calorie foods,” Farma suggested.Dietary guidelinesEat a variety of foods including fruits, vegetables, whole grains, protein-rich foods and dairy, which provide a good balance for every meal.Try not to go for more than 2 or 3 hours without eating.Carry healthy snacks so you can take a bite here and there.Nutrient-dense liquids can provide needed calories and are sometimes easier to consume than solid foods. Consider drinking milk, eggnog or unsweetened juice instead of coffee, tea or water.While you can’t change the fact that your digestive system is different, you can change your diet and lifestyle to enjoy a full and rewarding life after surgery.Adrian caught a virus while staying with his grandmother. A few years later, his mother and sister got the same virus. This virus could spread through touch and direct contact. However, Adrian did not contract the virus this time, even though he was living with his mother and sister. Why did he not get sick? Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it. Adrian’s innate
Answers
Answer:
Adrian's adaptive immune system remembered the antigens from the virus. so he becomes immune to it.
Explanation:
Answer:
Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it.
Adrian’s adaptive immunity produced a higher amount of specific antibodies for the antigen, preventing the virus.
Explanation:
What are vectors and list the diseases that are caused by them.
Answers
Explanation:
vectors are living organisms that transmit infectious pathogens between humans,or from animals to humans.
malaria
plague
relapsing fever
In order to produce all the protein that a cell needs, transcription takes place __________. * a. using single-stranded RNA b. using double-stranded RNA c. on a gene segment only once d. on a gene segment over and over again
Answers
Answer: on a gene segment over and over again
These proteins are produced by cells by the transcription and translation of certain genes from their DNA into molecules of messenger RNA (mRNA), chains of amino acids, and finally fully functioning proteins. Thus, option D is correct.
What gene involve to produce protein that a cell needs?The act of translating mRNA into tRNA, which participates in transcription, can be thought of as the decoding of instructions for building proteins.
The right time must be chosen for the production of proteins required for cellular function. All cells use information encoded in their DNA to control or regulate the synthesis of proteins. Gene expression is the process of activating a gene to produce RNA and protein.
Therefore, In order to produce all the protein that a cell needs, transcription takes place on a gene segment over and over again
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Which statement describes the role of a mitochondrion in providing a body with energy? It stores glucose that is taken from food so that respiration can happen later. It combines blood and oxygen so that energy can be released from glucose. It is the site where oxygen combines with small molecules and releases large amounts of energy. It is the site where food is broken down into small molecules and amounts of energy.
Answers
Answer:
3. It is the site where oxygen combines with small molecules and releases large amounts of energy.
Explanation:
Mitochondria is a cell organelle
It produces ATP, which is considered as energy currency of cell.
Answer:
C
:D
Explanation:
Type several paragraphs describing the full carbon cycle in detail. i. Discuss all components of your poster, as outlined in step 3. ii. Describe the exchange of carbon through carbon-containing compounds between an organism and the environment. iii. Describe the contributions of photosynthesis and cellular respiration within and among the four spheres. Discuss how carbon enters and leaves each of the four spheres and in what forms. iv. Discuss the role of carbon storage in organisms. b) Click “Enter” on your keyboard a few times to leave enough space to answer the following question. i. How is a model of the carbon cycle different from the actual cycling of carbon in an ecosystem? c) Make sure your paragraphs include correct sentence structure, punctuation, grammar, and spelling. d) Ask your teacher where you should save your work. Your teacher may also have specific guidelines about the file name you should use.
Answers
Answer:
The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms
Explanation:
When a cow eats hay how much of
the hay's original energy is
recovered by the cow?
Answers
Answer:
10%
Explanation:
We use the energy pyramid to figure this out:
.01% - A pex Predators
0.1% - Tertiary Consumers
1% - Secondary Consumers
10% - Primary Consumers
100% - Primary Producers
Cows are primary consumers, as they eat grass and hay (which are primary producers). So however much they eat of grass and hay, you multiply by 10% to get the total amount of energy that the cow gets.