Answer:
A. At high altitude, increase in 2,3-bisphosphoglycerate (BPG) ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Explanation:
Atmospheric pressure is low at high altitudes with the result that oxygen molecules in the air are further apart. The reduction of oxygen availability in the air thus reduces the oxygen saturation in the blood and brain. Oxygen saturation levels refer to the extent hemoglobin is bound or saturated to oxygen.
2,3-bisphosphoglycerate (BPG) is an allosteric inhibitor of oxygen binding to hemoglobin. At low concentration, oxygen delivery to tissues is low while at hgh concentrations, oxygen delivery to tissues increases. It ensures that oxygen bound to hemoglobin in blood from the lungs is delivered to the tissues. Thus, at high altitude, increase in BPG ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. During pregnancy, there is a significant increase in oxygen demand. This is due to a 15% increase in the metabolic rate and a 20% increased consumption of oxygen as the developing fetus obtains nutrients and oxygen from the mother's blood.
An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Which answer is the best representation for the shaded region?
Answer:
peoples do worship
everyone worships
Which of the following is correct regarding expiration?
diaphragm relaxes, volume increases, pressure decreases and air moves into the
lungs
diaphragm relaxes, volume decreases pressure increases and air moves out of
the lungs
diaphragm relaxes, volume decreases, pressure decreases and air moves out of
the lungs
diaphragm relaxes, volume decreases, pressure decreases and air moves into the
lungs
sley
diaphragm relaxes, volume increases, pressure increases and air moves into the
lungs
diaphragm relaxes, volume increases, pressure decreases and air moves out of
the lungs
List 4 significant problems with nuclear power plants....,,,,,?
Which environmental factor could lead to a decrease variation in a population of tuna
What can HIV become? (write it out)
HIV came become AIDS (acquired immunodeficiency syndrome) if not treated.
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
b. 10,000 plants
Explanation:
Producers, plants, contain the most stored energy in an energy pyramid.
I hope this helped :)
Pyramids depicting the number of organisms or biomass may be inverted, upright, or even diamond-shaped.
Energy pyramids, however, are always upright. Why?
Answer:
The correct answer is - as energy lost at every trophic level.
Explanation:
In any ecological ecosystem the energy pyramids always upright unlike other pyramids such as biomass showing the number of organisms, that can be diamond shape, inverted or upright.
The main reason behind this is due to the fact that it is only a pyramid in the ecosystem that always unidirectional in the food chain which is always some energy lost with an increase in the trophic level in the food chain. This loss of energy always gets back to the atmosphere in each step of the food chain.
As the energy is lost at every trophic level, the energy pyramids are always upright. A further explanation is below.
In whatsoever biological environment, the energy pyramid always seems to be straight, unlike some of the other pyramidal, including such biomass, which might be diamond-shaped, overturned, as well as upstanding.Essentially the food chain is simply a pyramid, and there is always some power loss as that of the primary consumers throughout the chain increases.
Thus the response above is right.
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List 4 significant problems with nuclear power plants.
Answer:
Risk of a Meltdown, Weapons Proliferation Risk, Cost, Nuclear Waste
Explanation:
Answer:
According to the article https://www.leonardodicaprio.org/the-7-reasons-why-nuclear-energy-is-not-the-answer-to-solve-climate-change/ there are 7 problems so pick your favorites I guess
1) It takes a very long time to go from from planning to operation
2) The cost
3) Weapon Proliferation risk
4) Meltdown risk
5) Mining leads to lung cancer
6) Miscalculations of CO2 equivalences
7) Radioactive waste
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
d
Explanation:
Which 4 body sydtems interact to allow a person to sneeze
Answer:
I think four body system is Muscular, immune, nervous, respiratory.
Explanation:
One scientist kept 20 grams of a radioactive material in a container. What will be the
mass of the radioactive material left in the container after 2 half lives?
40 grams
4 grams
10 grams
5 grams
After one half-life, there would be 10 g of the material left.
After two half-lives, there will be 5 g of the material left.
Therefore, 5 grams is the correct answer.
What is the unit of grams?The basic unit of mass or weight in the metric system is the gram. The most frequently used units of mass or weight used in the Canadian food industry are the gram and kilogram. Some of the types of grams are:-
Unit Abbreviation Mass (Weight)
kilogram kg 1000 grams
hectogram hg 100 grams
decagram dag 10 grams
gram g 1 gram
Therefore, last option is the correct answer.
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The graphs below show the population size of Organism A in a local lake, and the average temperatures of the lake by month.
Answer choices:
A) June
B) May
C) August
D) July
Answer:
its B
Explanation:
dont ask be i just know, and i got a good grade for that work even though i was hard
Answer:
July
Explanation:
1.) The optimal temperature for the Organism A population is approximately 25°C.
2.) The month during which the average temperature of the lake is around 25°C is July.
3.) The correct answer is: July
Is this correct? If not plz help
Answer:
Where is the question?
Explanation:
Scientists once classified fungi as types of plants. Today, fungi are classified in their own kingdom. Which of these
traits distinguishes fungi from plants?
A Fungi have cell walls made of chitin and are heterotrophic.
B Fungi grow in the ground and are photosynthetic.
С Fungi reproduce by asexual reproduction.
D Fungi are prokaryotes.
Answer:
D is the answer hope it helps
Four of the five answers below are related by a common phase of mitosis. Select the exception. Group of answer choices chromosomes align at the spindle equator sister chromatids become individual chromosomes centromeres divide the chromosomes move apart spindle microtubules shorten, pulling chromosomes toward the poles
Answer:
The correct answer is - chromosomes align at the spindle equator.
Explanation:
Chromosomes move and align at the spindle equator during the metaphase stage of mitosis and other given events take place during the anaphase stage of the mitosis cell division. Metaphase is the second phase of the M-phase of mitosis division whereas anaphase is the third phase.
The metaphase is characterized by the alignment of the chromosomes at the equator whereas the anaphase is separating the chromosomes pulled towards the poles and division of centromeres.
There is a sudden decrease in the food availability for wading birds. Make a claim about how the different levels of organization shown in the diagram will be affected. Summarize evidence to support your claim and explain your reasoning.
Answer:
I'm sorry I can't answer this I'm trying to get more points
4. The age of the Canyon Diablo meteorite was determined by
A) carbon-14
B) uranium-235
C) hydrogen-3
D) potassium-40
Answer:
B) uranium-235
Explanation:
The age of the Canyon Diablo meteorite was determined by potassium-40. Therefore, the correct option is option D.
Before entering Earth's atmosphere, the Canyon Diablo meteorite is thought to have weighed about 300,000 tonnes. It was most likely a component of the asteroid belt that lies between Mars and Jupiter. The Canyon Diablo meteorite is frequently linked to the Asteroid 1 Ceres, one of the biggest bodies in the asteroid belt. The Canyon Diablo meteorite is notable in particular for the effect it had when it collided with the Earth's surface. The Barringer Crater, which has a diameter of roughly 1,200 metres and a depth of 170 metres, was generated by the collision.
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Is a volcano part of the lithosphere? Explain. NO WEIRD LINKS!
Answer: Tectonic activity is responsible for some of Earth's most dramatic geologic events: earthquakes, volcanoes, orogeny (mountain-building), and deep ocean trenches can all be formed by tectonic activity in the lithosphere.
Please give me brainlest if this helps.
what is needed in the plant for cell division
Which statement about rocks is not true? A All rocks are made of minerals. B Rocks come in different shapes, colors, and sizes. C A rock is always made up of just one kind of mineral.
Answer:
C. A rock is always made up of just one kind of mineral
Question 23
Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system?
A) Somatic nervous system.
B) Parasympathetic division
C) Sympathetic division
D) Sensory (afferent) division
Please give a brief explanation for each one correct one or incorrect one.
plz help giving brainliest!!!!!
What is the function of the outer covering in fish?
1 Protects the fish from their environment
2 Supports the body and internal organs
3 Used for reproduction
4 Works with the muscles to allow movement
Answer:
Your answer is A,
Explanation: D can be argued for as well but those are the secondary functions of scales. Their main function is to protect the fish.
Many fish contain an outer covering of scales. Scales protect fish, much like a suit of armor. All fish have a dirty covering of mucus. This substance permits the fish to swim through the water with very little yawn and also makes it hard for other organism to adhere to the fish.
What are the functions of the parts of a fish?The dorsal and ventral fins mainly help fish to not move over onto their flanks.
The caudal fin is the main fin for propulsion to move the fish forward. The coupled fins help with steering, stopping and hovering.
Thus option "A" is correct, Protects the fish from their environment.
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help me out please!!!!
Answer:
It is c.
Explanation:
According to Charles Darwin theory of natural selection
the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D
Answer:
C or D
Explanation:
the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D
a male is born colorblind what do we know about his mother
Why is color NOT the best property to identify minerals A) different minerals can have the exact same colors B) all minerals have the same streak C) color can change due to impurities D) all minerals have one type of element
Answer:
b
Explanation:
gthtrhm xkcnsdvnsf
HELP ASAP!! In angiosperms, reproduction takes place in
A-cones ,
B-pollen.
C-flowers.
D-leaves.
Answer:
i think ur answer B.)
Explanation:
sorry if wrong
hope this helps
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer: a
Explanation:
Answer:
d
Explanation:
D is the only option where she can actually moniter the ecosystem
You are concerned with surveying the protozoa in the arboretum soil. While most commonly thought to live exclusively in aquatic environments, protozoa can play an important role in the nutrient cycling that takes place in soil. In addition, protozoa can help maintain the proper balance of bacterial populations within soil, as bacteria are a primary source of food for protozoa. Protozoa are extremely diverse. However, there are three characteristics common to all organisms called protozoa. What are these three characteristics
Answer:
eukaryotic, unicellular, without a cell wall
Explanation:
Protozoans are single-celled eukaryotes that generally move through cilia, flagella, or amoeboid motion. After their discovery, protozoans were considered as single-cell animals due to their animal behavior (including predation and motility), and because they don't have a cell wall, as observed in algae and plants. Some examples of protozoans include Paramecium, Amoeba, and Trypanosoma. Nowadays, the term 'protozoans' is still used to describe unicellular eukaryotic organisms from the Protista kingdom that are heterotrophs, i.e., unicellular microorganisms that acquire energy and nutrients from other organic sources, especially plant and animal matter.
Type 1 diabetes is an autoimmune disease that causes an increase in the amount of glucose in blood and urine. Which statement
CORRECTLY describes the cause of this disease?
A)
the increase in the insulin producing ability of white blood cells
B)
the loss of the insulin producing ability of the nephrons of the kidney
the loss of the insulin producing ability of the beta cells of the pancreas
D)
the increase in the insulin producing ability of the epithelial cells of bile
duct
Answer:
C) the loss of the insulin producing ability of the beta cells of the pancreas
Explanation:
Without diabetes, insulin produced in the pancreas on islets of Langerhans by beta cells to regulate blood sugar levels. Type 1 diabetes occurs when the pancreas produces little to no insulin.
