Why Do Blood Cells Form Sickle Shapes?

Answers

Answer 1

Answer:

it is because of a mutation in the hemoglobin gene


Related Questions

plants retain their leaves year round.?

Answers

It all depends on the species, some lose all of their leaves for part of the year while others lose their leaves before the next growing season, retaining some during winter or dry periods.

what is released into the cell during glycosis?

Answers

cellular respiration,glucose is oxidizedto Carbon dioxide and water

what type of organisms are included in protista​

Answers

Answer:

Hey mate !! Answer :- The organism included in kingdom protista are :-  1) Amoeba  2) Algae 3)paramoecium 4)Eugulena etc .  Common character among them is :-  They are unicelluar organisms.  

Explanation:

why is the late Cambrian thought of as the period of the greatest evolutionary change in life forms on earth's history?

Answers

Answer:

The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears.

Write the letter of the correct answer on the line at left.
7.
Benny uses a compass to navigate his way through the woods when he
is carnping. The needle on the compass reacts to Earth's magnetic field
by always pointing north. Which part of Earth is responsible for creating
its magnetic field?
A. Cilist
B. inner core
C. mantle
D. outer core

Answers

Answer

Outer Core

Because of the weight of the melting moving metal creates energy

Our planet is shielded from cosmic radiation and charged particles from our Sun by the magnetic field, which is created by the motion of molten iron in the Earth's core. It also offers the framework for compass navigation. Thus, option D is correct.

What role of outer core of earth in magnetic field?

Radiative heating and chemical differentiation have caused the Earth's outer core to be in a state of turbulent convection.

The convective kinetic energy is transformed into electrical and magnetic energy through a mechanism that is somewhat similar to a naturally occurring electrical generator.

The magnetic field is not produced by the earth's core, since metals lose their magnetic characteristics at high temperatures.

Therefore, Because of the weight of the melting, moving metal creates energy.

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Which of the following is a function of proteins?
(2 points)
repairs body tissue
speeds up chemical reactions
prevents infections & illness
all of the above

Answers

all of the above i think

How did the concept of biodiversity originally become more excepted in the scientific community?

Answers

Answer:

The Importance of Biodiversity

Increase ecosystem productivity; each species in an ecosystem has a specific niche—a role to play.

Support a larger number of plant species and, therefore, a greater variety of crops.

Protect freshwater resources.

Promote soils formation and protection.

Provide for nutrient storage and recycling.

Explanation:

can someone help me pls

Answers

I pretty sure it’s A.

dichotomous key of a cockroach​

Answers

Yo whsiqosbb Hsiang s Dianne. Dioxin

Answer:

Identification of cockroaches is limited here to  adults. A major source of confusion is the recognition of adults from nymphs.There are  subjective differences, as well as morphological  differences. Immature cockroaches are known as  nymphs. Nymphs closely resemble adults except  nymphs are generally smaller and lack wings and  genital openings or copulatory appendages at the  tip of their abdomen. Many species, however, have  wingless adult females. Nymphs of these may be  recognized by their shorter, relatively broad cerci  and lack of external genitalia. Male cockroaches  possess styli in addition to paired cerci. Styli arise  from the subgenital plate and are generally conspicuous, but may also be reduced in some species.  Styli are absent in adult females and nymphs

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Which of the following is the best solution to meet energy demands while protecting the environment?
A grow more corn to produce ethanol
B. build more nuclear power plants
C. find and burn new sources of oil and coal
D. improve energy efficiency and reduce energy waste

Answers

Answer: D

Explanation: just took the quiz

The best solution that meets the energy demands while protecting the environment is to improve energy efficiency and reduce energy waste. Thus, the correct option for this question is D.

What is the Environment?

The environment may be defined as a sum total of all forms of living and non-living elements and their consequences that significantly influence human life. It includes biotic and abiotic factors. The term environment is first given by Carlyle.

The protection of the environment requires a lot of actions by humans and the cooperation of other living organisms as well. All these actions impact the protection of the environment and improve energy efficiency along with the reduction in energy waste.

Therefore, improving energy efficiency and reducing energy waste is the best solution that meets energy demands while protecting the environment. Thus, the correct option for this question is D.

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What is the function of the nucleus within a cell?​

Answers

Answer:

It is responsible for protein synthesis, cell division, growth and differentiation.

Answer:

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.

Is circulation an essential life process?

Answers

Answer:

The circulatory system is extremely important in sustaining life.

Explanation:

Hope this helps, sorry if incorrect

20 Points!!!! Answer ASAP!!! Describe the process of oil extraction in complete sentences. Be sure to include information about how the process has changed in recent years.

Answers

The aboveground infrastructure—pads and access roads—are built, setting up the land for the next step: drilling. From start to finish, everything from traffic plans and designated access roads to noise barriers and safety procedures is carefully planned and monitored according to state and local laws.



STEP 2: DRILLING
First the drill rig is brought to the location—maybe 20 or 30 truck loads—and put together. Now It’s time to build the infrastructure necessary to unlock the oil and natural gas trapped more than a mile below the ground. A well is drilled straight down into the ground beneath the pad. The first stage is to drill what is called the surface hole down to a depth of 100 feet below the deepest known aquifer. A steel casing is then

Oil extraction is the process of recovering crude oil from underground reservoirs, in recent years, the process of oil extraction has changed, with new technologies and techniques allowing for more efficient and cost-effective oil production.

What is oil extraction?

The process of oil extraction involves drilling wells into the earth and then using various techniques to bring the oil to the surface, and the first step in oil extraction is to identify a suitable location for drilling, which is typically done using geologic surveys and other exploration techniques to locate areas with the potential for oil reserves, next step is to complete the well by installing a casing that helps to prevent the well from collapsing. Technologies such as "hydraulic fracturing," which involves injecting water and sand and assisting in the release of trapped oil and gas, have recently gained popularity.

Hence, it is the process of recovering crude oil from underground reservoirs, in recent years, the process of oil extraction has changed, with new technologies and techniques allowing for more efficient and cost-effective oil production.

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What type of pathogen is salmonella

Answers

Answer:

Salmonella is a genus of rod-shaped (bacillus) Gram-negative bacteria of the family Enterobacteriaceae. The two species of Salmonella are Salmonella enterica and Salmonella bongori. S. enterica is the type species and is further divided into six subspecies that include over 2,600 serotypes.

Explanation:

Answer: Ok Salmonella is a genus of rod-shaped (bacillus) Gram-negative bacteria of the family Enterobacteriaceae. The two species of Salmonella are Salmonella enterica and Salmonella bongori. S. enterica is the type species and is further divided into six subspecies that include over 2,600 serotypes.Salmonellosis is an infection with a bacteria called Salmonella, Salmonella live in the intestinal tracts of animals, including birds. Salmonella are usually transmitted to humans by eating foods contaminated with animal feces. Every year, approximately 40,000 cases of salmonellosis are reported in the United States.

Organism classification: Salmonella enterica

Lower classifications: Salmonella bongori

Diseases: Typhoid fever

Higher classification: Enterobacteriaceae

Hope this helps have a awesome day/night❤️✨

Explanation:

what are the reactants of the krebs cycle?

Answers

Answer:

The only reactants of the Krebs cycle proper are acetyl CoA and the four-carbon molecule, oxaloacetate.

In a process called transpiration, plants get rid of excess water through pores in the leaves called
stomata. This excess water is then released into the atmosphere as part of the water cycle. Which of
the following terms best describes how the released water enters the atmosphere?
O precipitation
condensation
O capillary action
O evaporation

Answers

Answer:

evaporation

Explanation:

Answer:

Evaporation

Explanation:

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up
by the cattle, and the cattle don't care if they are there or not.
A.Mutualism
B.Commensalism
C.Parasitism

Answers

Answer:

B.

Explanation:

Which organelle is this?

Answers

That is a chloroplast.

Hope this helps

Are the insulin and hemoglobin genes found in each of our cells?

yes

no

Answers

Answer:

yes

Explanation:

Why is it important for older adults to get a colonoscopy?

Answers

Answer:

The older you get the greater chance you have for colon cancer.

Explanation:

Answer:

It is important for older adults to get a colonoscopy to check for any signs of cancer.

Through which blood vessel does blood flow back into the heart

Answers

[tex] \huge \sf \colorbox{aqua}{Answer}[/tex]

The arteries (red) carry oxygen and nutrients away from your heart, to your body's tissues. The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart.

HELLLLPPPPPPPPPPP HURRY

Answers

Answer:

A

Explanation:

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How are mid-ocean ridges formed at divergent tectonic plates?

The plates are moving in a zigzag formation, creating shallow earthquakes which forms a mid-ocean ridge.
Mid-ocean ridges are not resulting features of ocean-to-ocean divergent boundary zones.
The plates are moving towards each other, which causes the crust to buckle and push upwards or sideways which forms a mid-ocean ridge.
The stretching lithosphere is pushed up as the plates move apart.

Answers

Answer:

The stretching lithosphere is pushed up as the plates move apart.

Explanation:

Mid-ocean ridges are basically underwater mountains that are created with the help of lava convection (which causes the rising of plates) and the diverging (the pulling away) of tectonic plates. This is also how ocean floor spreading happens.

I know that mountains are formed by the converging of tectonic plates, but ocean ridges are NOT created like this.

Hope this helps :)

In the 1970s, the pesticide DDT was used to kill insects that damaged fruit and vegetable crops. Most insects died from being exposed to DDT, but some survived. These surviving insects contributed to an increase in their population by

Answers

Answer:

gaining modification in their Gene's which helped them to resist that particular pesticide

These surviving insects contributed to an increase in their population by passing genes for DDT resistance to the next generation.

What is a resistance gene?

In order to survive, bacteria can create mechanisms known as resistance against antibiotics and antifungals. The germ's resistance mechanisms are determined by the specific proteins that DNA instructs the germ to produce. Many different forms of resistance genes can be found in bacteria and fungi.

Once a bacteria have acquired a resistance gene and incorporated it into its DNA, the bacterium can dominate other bacteria and convey the resistance gene to all of its offspring. Bacteria reproduce quickly, which amplifies resistance.

Hence, These surviving insects contributed to an increase in their population by passing genes for DDT resistance to the next generation.

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why is being heterozygous for sickle cell anemia considered an advantage?​

Answers

Answer: They may be maintained by heterozygote advantage

For example, the allele that causes sickle cell anemia is deleterious if you carry two copies of it. But if you only carry one copy of it and live in a place where malaria is common, the allele is advantageous because it confers resistance to malaria.

Explanation:

Hope this helped

A reaction time contest is held. While most competitors had an average sound reaction time between 0.17 and 0.20 seconds, one person scored a fantastic 0.0713 seconds on average. The results of this test are shown below. What is the most likely explanation of this unusually low average time?

A. The subject frank a beverage with a lot of caffeine just before the contest.

B. The subject had very warm arms and hands.

C. The subject was an avid video game player.

D. None of the above.

Answers

Answer:

its d bro

Explanation:

none of those make sense its literally d so easy

None of the above options is an explanation of the unusually low average time. Therefore, option (D) is correct.

What is standard deviation?

The standard deviation in statistics is a measurement of how much a group of data may vary or be dispersed. While a high standard deviation suggests that the values are dispersed throughout a larger range, a low standard deviation suggests that the values tend to be near to the established mean.

An average is one number chosen to represent a group of numbers; it is often the sum of the numbers divided by the number of numbers in the group. The average of the integers 2, 3, 4, 7, and 9 is, for instance, 5.

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Democracy And human rights

Answers

what’s the question?

Answer:

Democracy is one of the universal core values and principles of the United Nations. Respect for human rights and fundamental freedoms and the principle of holding periodic and genuine elections by universal suffrage are essential elements of democracy.

Explanation:

Explain how you are dependent upon at least one biotic and one abiotic factor.

Answers

Answer:

Biotic: We are dependent on plants, because we need them to eat.

Abiotic: We are dependent on water, because we need water to hydrate.

Hope this helps! <3

An example of a biotic and an abiotic factor that humans depend on are -

Biotic factor - plantsAbiotic factor - oxygen

The biotic factor is a factor that presents in an ecosystem that are living organisms and help in making and shaping ecosystems such as plants, animals, fishes, and others.

Human depends on the other organism mostly on plants for their food and energy as they can not produce their food.

The abiotic factor is the nonliving factor that interacts with the living organism or biotic factors to regulate and shape the ecosystems. It includes the carbon cycle, water, oxygen, temperature, and many others.

Humans depend on oxygen for their cellular respiration that provides energy for all essential cellular functions and without oxygen, there is no life present.

Thus, the correct examples are:

Biotic factor - plantsAbiotic factor - oxygen

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What is a known health problem caused by smokeless tobacco?
emphysema
lung cancer
mouth cancer
cataracts in the eyes

Answers

Other effects

can lead to a nicotine addictioncauses cancer of the mouth, esophagus (the passage that connects the throat to the stomach), and pancreas (a gland that helps with digestion and maintaining proper blood sugar levels)can increase risks for early delivery and stillbirth when used during pregnancymay increase the risk for death from heart disease and stroke

Answer:

Mouth Cancer, examples of smokeless Tabaco are chew and dip.

what are the two main types of chemical bonds?​

Answers

Answer:

Chemical bonds include covalent, polar covalent, and ionic bonds. Atoms with relatively similar electronegativities share electrons between them and are connected by covalent bonds. Atoms with large differences in electronegativity transfer electrons to form ions. The ions then are attracted to each other.

Two of the strongest forms of chemical bond are the ionic and the covalent bonds. Chemical bonds form between two atoms, each with its own electron environment.

Hope it helps!!!

Answer:

the two main types of chemical bonds are:

ionic bonds and covalent bonds.

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1. What is Chiapas, known by Enrique and other young migrants as the beast? Provide three possible reasons . Which womens rights leader was arrested for voting in a presidential election? A. Lucretia Mott B. Susan b. Anthony C. Elizabeth cady StantonD. Sojourner truth Who developed virtually the same theory of evolution?Select one:O a. WallaceO b. MalthusO c. LamarckO d. Lyell This is the picture for question Help!!!!!!!!!!!!!!!!! Identify the climax of the story circle the correct answer??? What was the mission of the American Colonization Society?To force southern plantation owners to move a small number of enslaved people to Africa each yearNortherners would steal enslaved people and free them by sending them to AfricaTo move formerly enslaved people back to AfricaTo bring more African People over to the US to work as enslaved people Body composition describes the proportion of body fat to lean mass ( muscle bone and water) in a person body how are diffusion and endocytosis similar? 2) Are there biological changes that happen in the brain that indicate depressions Please help me find the area of this triangle! Benjamin Franklin lived in Philadelphia and worked to improve the city. True or false? PLZ HURRY 50 POINTS!!! Will report if wrong. Read the excerpt from act 2, scene 1, of Julius Caesar.[BRUTUS.] Th abuse of greatness is when it disjoinsRemorse from power. And to speak truth of Caesar, I have not known when his affections swayedMore than his reason. But &lquo;tis a common proofThat lowliness is young ambitions ladder,Whereto the climber-upward turns his face;But when he once attains the upmost round,He then unto the ladder turns his back,Looks in the clouds, scorning the base degreesBy which he did ascend. So Caesar may.Then lest he may, prevent. And since the quarrelWill bear no colour for the thing he is,Fashion it thus: that what he is, augmented,Would run to these and these extremities;And therefore think him as a serpents eggWhich, hatched, would as his kind grow mischievous,And kill him in the shell. Which quotations support the central idea that Brutus thinks Caesar is dangerous and needs to be killed before he becomes even more dangerous? Select three options.A) Fashion it thus: that what he is, augmented, / Would run to these and these extremities;B) But 'tis a common proof / That lowliness is young ambitions ladderC) Th abuse of greatness is when it disjoins / Remorse from power.D) And since the quarrel / Will bear no colour for the thing he isE) And therefore think him as a serpents egg / Which, hatched, would as his kind grow mischievous, / And kill him in the shell. Select the correct answer.Which list describes the aspects of health that should be in balance to achieve total wellness?OA.nutritional, physical, and mentalOB. physical, social, and emotionalC.Intellectual, short-term, and long-termOD. cultural, technological, and analytical PLS HELP question ; a tourist traveling across germany, austria, france, spain would need how many different types of currency on her trip a. one b. twoc. threed. four 8. (03.04 MC)What is the first step needed to solve(4)x+6=13 ?A. Subtract 13 from both sidesB. Divide both sides by 7C. Add 5 to both sidesD. Multiply both sides by 4 Use a double number line to answer Problem 1-5.Tanner collected 360 cans and bottle while fundraising for his baseball team. This eas 40% of what Reggie collected. How many cans and bottles dif Reggie collect? 6312 divided by 8 how do u break it down How is impact force and impact time related when describing the same impulse? a) Inversely proportionalb) Directly proportionalc) They are opposite to each otherd) None of the above please help me I only have to do 5 more questions