In sickle-cell disease, variation in one gene causes red blood cells to bend, or sickle. This means the sickled cells _____.

A)are better at destroying the malaria parasite

B)carry toxic levels of oxygen through the body

C)cannot carry normal levels of oxygen to cells

D)attract larger numbers of the malaria parasite

Answers

Answer 1

Answer:

C. cannot carry normal levels of oxygen to the cells

Answer 2
Final answer:

Sickled red blood cells, characteristic of sickle-cell disease, cannot carry normal levels of oxygen to other cells in the body due to their abnormal shape causing them to get stuck in small blood vessels.

Explanation:

In sickle-cell disease, the mutation in the hemoglobin gene changes the shape of red blood cells. These cells are no longer round but sickle-shaped, hence the disease name. The right answer to your question is option C: sickled cells cannot carry normal levels of oxygen to cells.

This is because the abnormal shape of these red blood cells makes them rigid and sticky, which can cause them to get stuck in small blood vessels and block blood flow and oxygen to parts of the body. As a result, they can't deliver the usual amount of oxygen which other body cells need to function properly.

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Related Questions

What type of galaxy is shown?

barred
elliptical
irregular
spiral

Answers

Answer:

it's a spiral galaxy

Explanation:

the type of galaxy is show is a spiral

How are viruses different from cells?

Multiple choices;
Viruses cannot respond to their environment.
Viruses have the ability to reproduce.
Viruses contain nucleic acids.
Viruses do not carry out cellular functions.

Answers

Answer:

A and C

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what are 5 major results of global climate change ​

Answers

Answer:

Change Will Continue Through This Century and Beyond

Global climate is projected to continue to change over this century and beyond. The magnitude of climate change beyond the next few decades depends primarily on the amount of heat-trapping gases emitted globally, and how sensitive the Earth’s climate is to those emissions.

Temperatures Will Continue to Rise

Because human-induced warming is superimposed on a naturally varying climate, the temperature rise has not been, and will not be, uniform or smooth across the country or over time.

Frost-free Season (and Growing Season) will Lengthen

The length of the frost-free season (and the corresponding growing season) has been increasing nationally since the 1980s, with the largest increases occurring in the western United States, affecting ecosystems and agriculture. Across the United States, the growing season is projected to continue to lengthen.

In a future in which heat-trapping gas emissions continue to grow, increases of a month or more in the lengths of the frost-free and growing seasons are projected across most of the U.S. by the end of the century, with slightly smaller increases in the northern Great Plains. The largest increases in the frost-free season (more than eight weeks) are projected for the western U.S., particularly in high elevation and coastal areas. The increases will be considerably smaller if heat-trapping gas emissions are reduced.

Changes in Precipitation Patterns

Average U.S. precipitation has increased since 1900, but some areas have had increases greater than the national average, and some areas have had decreases. More winter and spring precipitation is projected for the northern United States, and less for the Southwest, over this century.

Projections of future climate over the U.S. suggest that the recent trend towards increased heavy precipitation events will continue. This trend is projected to occur even in regions where total precipitation is expected to decrease, such as the Southwest.

More Droughts and Heat Waves

Droughts in the Southwest and heat waves (periods of abnormally hot weather lasting days to weeks) everywhere are projected to become more intense, and cold waves less intense everywhere.

Summer temperatures are projected to continue rising, and a reduction of soil moisture, which exacerbates heat waves, is projected for much of the western and central U.S. in summer. By the end of this century, what have been once-in-20-year extreme heat days (one-day events) are projected to occur every two or three years over most of the nation.

Hurricanes Will Become Stronger and More Intense

The intensity, frequency and duration of North Atlantic hurricanes, as well as the frequency of the strongest (Category 4 and 5) hurricanes, have all increased since the early 1980s. The relative contributions of human and natural causes to these increases are still uncertain. Hurricane-associated storm intensity and rainfall rates are projected to increase as the climate continues to warm.

Answer:

1. North and south poles are Melting (Slowly)

2. There is less rainfall in the Sahara Dessert

3. Sea levels rising

4. More floods due to risen sea levels

5. Hotter climates

Which of the following types of RNA are NOT used in translation?

A. mRNA
B. Trna
C. Rrna
D.none of the above

Answers

I would go with none of the above

All the listed types of RNA (mRNA, tRNA, rRNA) are involved in the translation process, making the correct answer D. none of the above.

Translation is the process of protein synthesis where different types of RNA play essential roles. The three main types of RNA involved in this process are:

mRNA (messenger RNA): Carries the genetic information copied from DNA in the form of a series of codons, each of which specifies a particular amino acid.tRNA (transfer RNA): Brings the appropriate amino acid to the ribosome to be added to the growing polypeptide chain according to the sequence of the mRNA.rRNA (ribosomal RNA): A key structural and functional component of ribosomes, which are the sites of protein synthesis.

Considering the roles of these RNA types in translation, the correct answer is D. none of the above because all the listed types of RNA (mRNA, tRNA, rRNA) are involved in translation.


Groundwater is desirable for which of the following reasons?
A. It is often very pure.
B. It is cooled naturally underground.
C. It is easier to extract than surface water.
D. It is more easily replenished than surface water.

Answers

A it is often very pure so groundwater is desirable

Answer: Option A.

It is often pure.

Explanation:

Ground water is the water found underground the or below the Earth surface where it occupies the faces of the soil, fractures of rock formations. It is stored in them and move steadily in this formations.

It is gotten by drilling or digging Wells. Ground water is clean or pure and ready to use because the soil filters the water.

What are some non-specific responses of the immune system and how do they protect us from infection?

Answers

Answer: Some non specific responses in the body caused by the immune system are the release of body cells. (T-cells, T-killer cells, B-cells, B-Helper cells.)

Explanation:

When your body notices an intruding viruses or bacteria, it initiates a chemical response. (Aka your germacide.) You body has two systems that’s work together to kill these intruders, your non specific defense, and you specifics defense. Each has it’s own jobs. The non specifics job is to release you cells to the targeted area. When a cell is detected, and it gets into your blood your B cells will latch onto it and call your other cells to come kill it. Another way you’re non specific defense gets to work is your skin. You body always has germs on its skin, so it produces a anti germ liquid. Sometimes it doesn’t affect them, and sometimes it does. For the germs it attacks, it actually breaks down the cells cell. It’s like a acid for the germ.

gardener purchased 20 full-grown pea plants. All 20 were the same genotype and had purple flowers. The gardener crossed two of these plants to get seeds for the next season. The seeds from the cross produced some plants with purple flowers and some with white flowers. The gardener learned that in pea plants the allele for purple flowers (P) is dominant of the allele for white flowers (p). What was the most likely genotype of the original 20 full-grown plants?

Answers

Answer:

maybe 75% of them were purple and 25% were white

Answer:

"Pp" is the most likely genotype of the original 20 full-grown plants

Explanation:

Given

All the 20 full-grown pea plants have purple flowers.

But when two plants out of these 20 are mated , then the seeds from the cross produced some plants with purple flowers and some with white flowers

This leads to a conclusion that though the 20 plants have purple color , they must be carrier of white color allele.

Thus, genotype of all the 20 pea plant species would be "Pp"

if two "Pp" genotype plants are crossed following offsprings are produced -

P p

P PP Pp

p Pp pp

Since "p" is a recessive allele , therefore when two recessive alleles are together they express their trait.

So, here in this case one out of four offspring is white in color.

Which is true of unipotent stem cells

Answers

They can only produce cells that are the same as them

What is the relationship between the 5 senses and homeostasis

Answers

The senses help the body react tostimuli by responding to changes in pressure, temperature, sights, etc. that alert the body to danger. The body reacts to keep itself out of danger or tomaintain homeostasis.

What would happen if a plant could carry out photosynthesis, but not respiration?
Question 3 options:


It would have no food.


It could make food but not use it.


It would have too much water in its cells.


It would be unable to capture the energy in sunlight.

Answers

Answer:

answer is 1

it would have no food.

Explanation:

Photosynthesis also uses carbon dioxide faster than respiration produces it. Oxygen surplus is released into the air and unused glucose stored in the plant for later use. This is why plants are so important to human and other animals' survival. Without photosynthesis, we wouldn't have oxygen or food to stay alive.

Plant cells respire, just as animal cells do. If they stop respiring, they will die. Remember that respiration is not the same as breathing, so take care - plants do not breathe.

The study of plants is called botany. There are two types of plants and these are flowering plants and nonflowering plants.

The correct answer is A it would have no food.

What is respiration?

The oxidation of the biomolecules to make the energy is called respiration.

Photosynthesis also uses carbon dioxide faster than respiration produces it. Oxygen surplus is released into the air and unused glucose is stored in the plant for later use.

This is why plants are so important to human and other animals' survival. Without photosynthesis, we wouldn't have oxygen or food to stay alive. Plant cells respire, just as animal cells do. If they stop respiring, they will die. Remember that respiration is not the same as breathing, so take care - plants do not breathe.

Hence, the correct answer is option A.

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sensory and motor neurons are connected to the ____ nervous system

Answers

Answer:

Central

Explanation:

Sensory and motor neurons are connected to the central nervous system.

The central nervous system (CNS) is the section of the nervous system that is made up of the brain and spinal cord. The sensory and motor neurons are connected to the central nervous system. The sensory neurons receive impulses (message) and transmit them from the sense organs to the brain or spinal cord, while the motor neurons transmit impulses from the brain and spinal cord to muscles or glands within the body.

Final answer:

Sensory and motor neurons are both linked to the peripheral nervous system. Sensory neurons transport information from the body's tissues and organs into the central nervous system, while motor neurons transmit signals from the central nervous system to the body's muscles, glands, and organs.

Explanation:

Sensory and motor neurons are connected to the peripheral nervous system. In detail, the peripheral nervous system consists of the nerves and ganglia that lie outside the central nervous system, which includes the brain and spinal cord. Sensory neurons bring information from the body's tissues and organs into the central nervous system, which helps us react to stimuli. In contrast, motor neurons carry signals from the central nervous system to the muscles, glands, and organs in the body to trigger actions like muscle contraction or gland secretion.

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The study of function or how organisms perform functions on the cellular, tissue, organ, system, or organism levels

Answers

Answer:

Biology

Explanation:

ASAP please help
Irritable bowel syndrome (IBS) is a disease caused by the body’s inability to digest food properly. This disease may be caused by food or stress. What type of disease is IBS? a(n)________ disease

Answers

Answer:noninfectious

noninfectious

Explanation:

Answer:

noninfectious

Explanation:

dilate means to become wider and contract means to become narrower . which of the following statements best describes what happens during exercise

Answers

Answer:

Blood vessels in the heart dilate to increase blood pressure.

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[tex]Sofia[/tex]

Nicholas Steno recognized "tongue stones" as the teeth from which of the following? cavemen dinosaurs wooly mammoths ancient sharks

Answers

Answer:

ancient sharks

Explanation:

Nicholas Steno can be considered as the father of paleontology. In the year of 1666, Steno received a shark specimen caught by two fishermen. Once he started dissecting it, he noticed that the teeth have very interesting shape. They reminded him of the ''tongue stones'' known since the antiquity. In fact, the ''tongue stones'' were actually teeth of ancient sharks, just that the people were not aware of that. Steno was quick to see the similarities, thus he made a conclusion that they have to be connected.

What does the chimpanzee have that the other organisms do not?
A) Claws
B) Lungs
C) Mammary Glands
D) Opposable Thumbs

Answers

Answer:

D) Opposable Thumbs

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D, opposable thumbs

Other organisms don’t

What's the most common extrusive igneous rock on Earth? 

  A. Rhyolite  B. Pumice  C. Basalt  D. Obsidian​

Answers

Answer:

c.basalt is the most common extrusive igneous rock on Earth.

Explanation

basalt is the most extrusive igneous rock on the earth it is present in different shades as a result of a geochemical process. It is formed by the cooling of lava which is iron and magnesium-rich.Basalt is a very useful rock most of the area of the Earth ocean is form by the foundation of basalt.

Basalt is the most common extrusive igneous rock on Earth. Therefore, option (C) is correct.

As a result of a combination of geological and chemical processes, basalt may be found in a variety of colours despite being the most extrusive igneous rock on the planet.

The solidification of iron- and magnesium-rich lava is what gives rise to its formation.The basis of the vast majority of the oceanic space on Earth is composed of basalt, making basalt a very useful type of rock.

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Which of these observations helped scientists develop the cell theory?
O A) All cells have DNA.
OB) Many different types of cells have organelles.
Oc) Cells are modified for different functions.
OD) All parts of a plant are made of cells.

Answers

Answer: All parts of a plant are made of cells.

Answer:

All parts of a plant are made of cells.

Explanation:

Cell theory was developed by Sheildien and Schwann. The cell theory states that cell is the functional and structural unit of the living organism. All living organism are made of cell.

The scientists discover that all parts of plants are made of cell. Later, found that not only plants but all the living organism are made of cell. Cell perform all the basic necessities of life. The new cell arise from the pre existing cell.

Thus, the correct answer is option (D).

the oceanic zone is _​

Answers

Oceanic zone. Marine habitats. The oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

The oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

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why is sexual reproduction important to the evolutionary proccess​

Answers

Because of the genetic mutation, or the possibility of the offspring have a genetic disorder.

Answer:

These mutations are passed onto the next generation because the offspring are exact genetic clones of their parent. The genetic load of organisms and their populations will increase due to the addition of multiple deleterious mutations and decrease the overall reproductive success and fitness.

Choose all the answers that apply. Genes _____. are made of DNA are carried on chromosomes determine physical and chemical traits can cause genetic disorders are made of chromosomes

Answers

Answer:

Genes are made of DNAGenes are carried on chromosomesGenes can cause genetic disorder

Explanation:

Genes are the physical and functional unit that determines heredity in humans. They are made of DNA and located in the chromosomes. A chromosome contains a long strand of DNA that has many genes.When mutation of a gene happens, it can result to a genetic disorder.In a single gene disorder, mutation happens on a single gene where as in complex gene disorder, mutation happens on one or more genes.

Answer:

are carried on chromosomes are made of DNA can cause genetic disorders determine physical and chemical traits

Explanation: Basically everything but are made of chromosomes.

Which of the following is a contact force? Electrical force Frictional force Gravitational force Magnetic force

Answers

Answer: Frictional Force

Explanation: Friction always acts to oppose any relative motion between surfaces. For the simple example of a book resting on a flat table, the frictional force is zero.

Answer:

Frictonal Force.

Sorta-Explanation:

The contact forces are Frictional, Normal, and Applied. The non-contact are Magnetic, Gravitational, and Electrical.

Different (blank) of an element have different numbers of neutrons

Answers

Answer:

lons

hope this helps

Answer: The correct answer is isotopes.

Explanation:

Isotopes are defined as the chemical species of the same element which has different atomic mass but have same atomic number.

It can also be said that they have different number of neutrons but have same number of protons.

For Example:  [tex]_6^{12}\textrm{C}\text{ and }_6^{14}\textrm{C}[/tex] are the isotopes of carbon. They have 6 and 8 number of neutrons respectively.

Hence, different isotopes of an element will have different number of neutrons.

How does the greenhouse effect trap heat?

Answers

Answer:: Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. As the heat makes its way through the atmosphere and back out to space, greenhouse gases absorb much of it. ... They radiate the heat back to the Earth's surface, to another greenhouse gas molecule, or out to space.

Explanation:

Please help I dont know none of these.

Answers

Answer:

9. True

Explanation:

Cells make up all living things.

The image shows that landmasses now separated by oceans fit together like puzzle pieces and have fossils of the same organisms. These clues are evidence of

Answers

Answer:

continental drift theory

Explanation:

If we take the shapes of the continents and we compare them, and put them next to each other, we can see that they are an almost perfect match, and that they resemble a puzzle. Also, it is very interesting that there are lot of fossils that are exactly the same, thus the same species, found in multiple different continents. These two clues give us part of the evidence that the continental drift is a real process that has been going on since very early in the geological timeline.

in which position are the earth, moon, and sun during a new moon?
A. Moon is between the sun and earth

B. Earth is between the sun and moon

C. Sun is between Earth and the moon

D. Moon is to the side of earth and the sun

Please help!

Answers

Answer:

A. Moon is between the Sun and Earth

Explanation:

The new moon stage is the faze in which we can not see the Moon from Earth. In this stage, the Moon is lacking from the sky, or rather we can not see it because it is totally dark from the side that is facing the Earth. The reason for this is that the Moon is located between the Sun and the Earth. The Sun is making half of the Moon bright as it always does, but in this stage it is the half of the Moon that is facing the Sun, while the other half that is facing the Earth is totally dark as it doesn't receive any sunlight at that time.

Answer:

i just took test here u go

Explanation:

The hand is proximal or distal to the upper arm

Answers

Answer:

The further away an attachment or body part is from the center (shoulder, elbow, wrist, hand, fingers) the more distal it is, and the closer the body part is to the center the more proximal it is.

Explanation:

Final answer:

The hand is distal to the upper arm; 'distal' means farther from the point of attachment to the trunk, whereas 'proximal' means closer.

Explanation:

The hand is distal to the upper arm. The term 'distal' refers to a position in a limb that is farther from the point of attachment to the trunk of the body or the origin. In contrast, 'proximal' describes a position that is nearer to this point of attachment. For instance, the brachium (upper arm) is proximal to the antebrachium (forearm). In the context of the human body's anatomical position, the upper arm, which contains the humerus bone, is between the shoulder and the elbow joints, while the hand is beyond the wrist. Therefore, when comparing the position of the hand relative to the upper arm, the hand is situated distally.

Why do some organisms reproduce asexually

Answers

Answer:

Some organism reproduce by asexual reproduction because it does not requires much energy and is very convenient.

This type of reproduction does not requires two parent. They do not involve the fusion of male and female gamete.

The offspring produced by this process are same and it does not requires much time to produce offspring.

There is no variation in the offspring and the stability of organism produced by asexual reproduction is less as compared to that of sexual.

Final answer:

Organisms reproduce asexually to rapidly produce offspring without needing a mate, resulting in a quickly growing population of genetically identical individuals, which can be beneficial in stable environments but a disadvantage in changing ones.

Explanation:

Some organisms reproduce asexually because this method of reproduction can be very quick and does not require the meeting of male and female organisms. Asexual reproduction allows for the rapid growth of a population since every individual is capable of reproduction, leading to advantages in certain environmental conditions. Asexual reproduction often results in offspring that are exact genetic clones of the parent, which can be beneficial if the parent's traits are well suited to the environment.

However, it also means that all offspring carry the same genetic vulnerabilities, which can be a disadvantage in changing or unpredictable environments. Sexual reproduction introduces genetic variation which can be advantageous for populations in variable environments, as it enhances adaptability and increases the chance of survival against diseases and environmental changes.

The potential toxicity of a chemical may be lower if it

Answers

Answer:

if you lose toxins from toxin city

Explanation:

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Substitute the value x = -1 into the first equation and solve for y.{ y= 2x - 1 -2x - y = 5 Nicholas is a man who the local college students all think of as eccentric. each day he stands on campus, smiling at people as they walk by, and he is known for his ever-present greeting of "good luck!" in fact, the students at this campus have come to refer to him as "good luck nick." nobody knows if he has a home or if he is destitute, but nicholas never asks for anything. which of the four criteria of mental illness might nicholas satisfy? (1 point) A circle with radius r is inscribed into a right triangle. Find the perimeter of the triangle if:the length of the hypotenuse is 24 cm, and r=4 cm; Three students, Angie, Bradley, and Carnell, are being selected for three student council offices: president, vice president, and treasurer. In each arrangement below, the first initial of each persons name represents that persons position, with president listed first, vice president second, and treasurer third. Which shows the possible outcomes for the event? find the total surface area of this cone. round to the nearest tenth(my last question of my homework and I keep getting it wrong) Two vectors are illustrated in the coordinate plane. What are the components of the vector in quadrant I? Freddie is worried about his daughters safety when she drives the car so he installed an automobile safety system in his daughters car.what is the most likely use of this device?A. Freddies daughter can drive the car faster B. Carjackers will not be able to steal this car C Freddies daughter can access weather and traffic information through this device.D Freddies daughter can not cross a certain speed If potential energy at point A is 12 joules, what is the potential energy say C?P.E. = 4 6 Or 4.8 A bank employee sold customers personal identification information to a third party. What law did the employee break? A. Fair Credit Reporting Act B. Right to Financial Privacy Act C. Federal Deposit Insurance Act D. Fair and Accurate Credit Transactions Act E. Gramm Leach Bliley Act Point B is the center of a circle, and AC is a diameter of the circle. Point D is a point on the circle different from A and C. If angle BDA = 20 degrees, then what is the measure of angle CBD? Answer choices:a) 70 degreesb) 120 degreesc) 140 degreesd) 40 degrees What is the most common mental health diagnosis for youth in detention and correction facilities? What is the volume of a rectangular prism that is 120 centimeters by 2 meters by 1.5 meters in cubic meters? 3.6 3,600,00 360 36 What does the Finder do? Choose the type of propaganda technique most clearly used in this statement. Our fruit drink contains more natural fruit juice than any other fruit drink.A. Our product better than all the other products B. You need this product in order to have everything C. Our product is not as expensive as other productsD. Our product will keep your family free from danger Which equation is y=(x+3)^2 +(x+4)^2 rewritten in vertex form ? Please Help Me With This One :-/ HELP ASAP!An ice cube has _____ than a cup of hot tea.A)less heat energy B)more cold energy C)more heat energy D)less cold energy What is the average speed for a car driving a distance of 186 meters to the north in a time of 28 seconds? a6.64m/s b9.15m/s c3.64m/s d7.64m/s e9.64m/s James found a pair of shoes he wanted at two stores. At store A they are $35 and he had a 20% off coupon. At store B they were $40 and he had a 30% off coupon. Which would be the better deal and by how much? Match each underlined word to its contextual meaning in the sent Steam Workshop Downloader