Answer: Explanation:
Sickle hemoglobin differs from normal hemoglobin by a single amino acid: valine replaces glutamate at position 6 on the surface of the beta chain. Therefore the red blood cell bends differently giving it a sickle shape
Answer:
Explanation:
Sickle cell disease is a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disease have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.
Signs and symptoms of sickle cell disease usually begin in early childhood. Characteristic features of this disorder include a low number of red blood cells (anemia), repeated infections, and periodic episodes of pain. The severity of symptoms varies from person to person. Some people have mild symptoms, while others are frequently hospitalized for more serious complications.
The signs and symptoms of sickle cell disease are caused by the sickling of red blood cells. When red blood cells sickle, they break down prematurely, which can lead to anemia. Anemia can cause shortness of breath, fatigue, and delayed growth and development in children. The rapid breakdown of red blood cells may also cause yellowing of the eyes and skin, which are signs of jaundice. Painful episodes can occur when sickled red blood cells, which are stiff and inflexible, get stuck in small blood vessels. These episodes deprive tissues and organs, such as the lungs, kidneys, spleen, and brain, of oxygen-rich blood and can lead to organ damage. A particularly serious complication of sickle cell disease is high blood pressure in the blood vessels that supply the lungs (pulmonary hypertension), which can lead to heart failure. Pulmonary hypertension occurs in about 10 percent of adults with sickle cell disease.
what is pseudopodia?
Answer:
Pseudopodia are temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move.
Explanation:
Pseudopodia are temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called amoeboids. The amoeba is a common example. ... Pseudopods can also capture prey by phagocytosis.
How would Earth be different without the greenhouse effect?(1 point)
A.There would be more solar energy reaching Earth.
B.The atmosphere would contain more methane.
C.The oceans would contain more carbonic acid.
D.There would be more ice on Earth's surface.
Answer:
I think the answer will be:
D. There would be more ice on Earth's surface.
Explanation:
Without the greenhouse effect, the Earth would have an average temperature of -18°c and life would not be able to survive.
The Earth would be different if the greenhouse gasses didn't even exist.
The Earth's surface would be covered in more ice.
So, option D. is correct.
Define greenhouse effect.The greenhouse effect happens when solar energy passes through a planetary system and heats its surface, but the air prevents the energy from going directly to space, leading in a warming climate.
The Earth would be different if the greenhouse gasses didn't even exist.
The Earth's surface would be covered in more ice. So, option D. is correct.
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NADP+ is an example of an electron carrier. Describe its function in photosynthesis.
Answer:
Its ferment oxidant-renewal of bio-reactions at cells.
what releases carbon dioxide into the atmosphere
Answer:
Carbon Dioxide Emissions: Human Sources
Human activities such as the burning of oil, coal and gas, as well as deforestation are the primary cause of the increased carbon dioxide concentrations in the atmosphere.What do you consider to be your culture? How do you feel about it?
Answer:
My culture is my Jewish culture.
Explanation:
I feel great about it.
please help me with this biology question.............
Why is the use of electron microscopy important in studying cells ??
Explanation:
Electronic microscope helps us to see each every part of the cell. So, it is considered important
Answer:
A cell is the smallest unit of life. Most cells are so small that they cannot be viewed with the naked eye. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes.
Explanation:
hope it's help you
1. What are the different properties of light that apply to the image formation of
optical devices such as mirrors and lenses?
Answer:
Optical instruments are based on optics. They use mirrors and lenses to reflect and refract light and form images. The light microscope and telescope use convex lenses and mirrors to make enlarged images of very tiny or distant objects. A camera uses a convex lens to make a reduced image of an object.
The property of light that is important to the image formation in mirrors is reflection. The property of light that is important in the formation of an image by lenses is refraction.
Light refers more specifically to the portion of the electromagnetic spectrum that is perceivable with the optical eyes. There are several properties of light such as reflection, refraction, diffraction, interference, etc.
The property of light that is important to the image formation in mirrors is reflection. The property of light that is important in the formation of an image by lenses is refraction.
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When egg and sperm meet, offspring formed will have traits from…
A. 1 parent
B. Passed from 2 parents
C. Traits identical to other siblings
Answer:
I'm pretty sure it's B because kids can get looks from both parents
Answer:
B. passed from 2 parents
Why do cells continue to divide in adult organisms?
Answer:
Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.
Explanation:
please mark this answer as brainliest
Can someone explain?
Answer:
A greenhouse keeper...
What objects did scientists use to help determine the age of the Earth? *
Why is the moon abiotic?
Answer:
The moon is abiotic because it doesnt move and it's not a living thing.
Which type of lipid has a least one double bond ( i.e. a kink?)
a -saturated
b- unsaturated
c - monosaccharide
d - disaccharide
Answer:
B Unsaturated
Explanation:
Unsaturated fat, a fatty acid in which the hydrocarbon molecules have two carbons that share double or triple bond(s) and are therefore not completely saturated with hydrogen atoms.
how do we know that change is taking place around us ? what is the need to study change ? explain some example
Answer:
Specialisation in the knowledge society and its need
Posted by Bernardo Lajus on Mon, 01/07/2013 - 11:54.
Contemporary society is characterized by globalization. The information and the speed with which they reach society amaze anyone who has experienced the 1980s and 1990s. Because of the technology and facilities it brings, the recipients of this information become increasingly demanding, in every way. Demanding with you, with others, with things, with everything, making the world so demanding, to the point that services and information are insufficient, exhausting, poor.
Because of this, the world specializes. The professions have gained new directions, new perspectives. The courses that were previously generic, such as engineering, law, medicine, became insufficient and were gaining tributaries. If before the general practitioners of mechanical engineering and law realized the professional demand, over the years and the evolution of society, it required professionals to become specialists, creating branches and opening possibilities.
Today, specialists, masters and doctors are essential for the rapid development of society, required everywhere. Despite the harm spawned (such as time demanded, or "knowing much about little), specialization in the knowledge society brings inegulable benefits. The creation of new jobs, the deepening of knowledge and the quality of services makes society evolve even more.
Thus, although the human being, in his individuality, is not expanding his way of knowing, but rather reducing himself to specificity, society as a whole plunges into a profound expansion of knowledge, bringing this to everyday life, from the most trivial to the most complex of works, specialization is necessary and beneficial.
Explanation:
match the choices with each box.
Answer:
1 is totipotent
2 is mutipotent
3 is pluripotent
4 is totipotent
5 is pluripotent
6 is mutipotent
Explanation:
I honestly dont know sorry if they r wrong
what are the factors affecting brilliance of stars
the age of the star because just like people as they grow older they become weak and so arr the stars their brilliance fade when they become older.
Why is biodiversity important?
Answer:
Biodiversity is important to humans for many reasons. Ecological life support biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services
Does dna determine your traits
Answer:
yes
Explanation:
because i'm smart
The atomic number of Re is 75. The atomic mass of one of its isotopes is 186. How many electrons are in this particular isotope.
Answer:
75 electrons
Explanation:
Since there is no charge, electrons and protons are the same number. Atomic numbers indicate the amount of protons.
Use the information to answer the following question.
A population of rabbits lives in a grassy field that is lush and green in summer and covered in snow in winter. At the start of the summer,
75% of the population are white rabbits, and the remaining 25% of the population are brown rabbits. In rabbits, white (W) is dominant
over brown (w). During the summerthe field where they live experiences a drought. The
summer drought lasts for two years, through
many generations of rabbits.
Which prediction BEST estimates the expected percent of white and brown rabbits in the population at the end of the
drought?
O A. The rabbit population will consist of 0% white rabbits and 100% brown rabbits.
OB. The rabbit population will consist of 35% white rabbits and 65% brown rabbits.
C. The rabbit population will consist of 95% white rabbits and 5% brown rabbits.
D. The rabbit population will consist of 80% white rabbits and 20% brown rabbits.
Answer:B
Explanation:
The rabbit population will consist of 35% white rabbits and 65% brown rabbits. Therefore, option B is correct.
What are the limiting factors of the rabbit population?Until a limiting factor, such as low reproduction, food scarcity, predation, disease, and/or weather conditions restrict populations, the population tends to grow.
Some density-dependent limiting factors are the spread of pathogens, competition for nesting locations, the destruction of habitat, increase in the population of predators. Several predators, including raptors and coyotes, use rabbits as food, but in urban and suburban areas, cats and dogs pose the biggest threat. Some abiotic limiting factors are drought, flood, earthquake, and all types of natural disasters.
The rabbit population will consist of 35% white rabbits and 65% brown rabbits. Therefore, option B is correct.
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Material rising from the mantle reaches the surface at spreading centers.
A. True
B. False
Yes, It's true!
Explanation:
Material rising from the mantle reaches the surface at spreading centers.
A. True
B. False
What are the two factors that ultimately decide what organisms can live in an area?
1 temperature and oxygen
2food and water
3food and oxygen
4water and oxygen
5water and temperature
Answer: 2. Food and water
Explanation: Good luck! :D
PLEASE HELP !!!!! ILL GIVE THE BRAINIEST!!!
Answer:
hello i am not sure but i think the answer is D
Each species has a special scientific name that is selected by the person or group that discovers it. The name typically conveys information about the species. Thus, option D is correct.
What are the main characteristic for changing an organism?The kingdom is a smaller taxon than the recently added domain, which is a more expansive taxon. Similarities in outward physical characteristics serve as the foundation for the Linnaeus system.
Gene variants, sometimes known as mutations, can cause genetic differences, or a normal process in which genetic information is rearranged as a cell prepares to divide can also cause genetic variations (known as genetic recombination).
Therefore, Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function.
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why can it take soil thousands of years to form
Evaluate the model of translation. What does it show to be the result of translation? A) formation of a protein B) formation of a ribosome synthesis of a carbohydrate D) translation of mRNA's code
Answer:Formation of a protein
Explanation:
Answer:
A. Formation of a protein
Explanation:
the nose produces a sticky material called mucus, which is moistens the air and traps particles true or false
Answer:
True
Explanation:
It traps the particles and stops them from reaching your lungs and harming them.
What events occur when the tectonic plates move and grind against each other?
Answer:
Earthquakes
Explanation:
Since the Tectonic Plates slide across each other it cause some to go above and some below which might eventually cause an earthquake.
Hope this Helps!!:)
Why do you think it's important for scientists to study plate tectonics? Explain.
Studying plate tectonics is important because it helps explain Earth's surface features, predict natural disasters, investigate Earth's history, explore natural resources, and understand global climate patterns. It is a multidisciplinary field that provides valuable insights into the dynamic nature of our planet.
Scientists study plate tectonics for several important reasons. Firstly, understanding plate tectonics helps scientists explain the formation of different features on Earth's surface, such as mountains, valleys, and ocean basins. By studying the movement and interactions of Earth's tectonic plates, scientists can better understand the processes that shape our planet.
Secondly, studying plate tectonics is crucial for predicting and understanding natural disasters. Earthquakes, volcanic eruptions, and tsunamis are all related to tectonic activity. By analyzing plate boundaries and identifying areas prone to seismic activity, scientists can provide early warnings and help communities prepare for potential disasters.
Furthermore, studying plate tectonics is essential for investigating Earth's history. The movement of tectonic plates over millions of years has shaped the continents and influenced the evolution of life on our planet. By examining the distribution of fossils and rock formations, scientists can reconstruct past tectonic events and gain insights into Earth's geological history.
Additionally, understanding plate tectonics is crucial for exploring natural resources. Many valuable minerals and energy resources are formed as a result of tectonic processes. By studying plate boundaries and their associated geological features, scientists can identify potential locations for mining and resource extraction.
Lastly, studying plate tectonics contributes to our understanding of global climate patterns. The movement of tectonic plates affects ocean currents, weather patterns, and the distribution of landmasses. By analyzing these interactions, scientists can better predict and understand climate change.
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What conditions allowed so many different kinds of mammals to
evolve during the Cenozoic Era?
A. Grasses evolved providing food to larger grazing animals, no dinosaurs which made way for mammals
B. Overpopulation of ocean algae allowed for more fish to thrive following more species of fish to exist
C. No dinosaurs so mammals were forced to evolve or die
D. More macrobiotic organisms caused the evolution process to happen at a quicker rate
Answer:
A. Grasses evolved providing food to larger grazing animals, no dinosaurs which made way for mammals
Examining different cells such as the plants, animal, and fungus cells. Identify the different organelles found in different cells and list the organelles and structures the characterize each of them.
Answer: Organelle is a sub-unit of cell and it is involved in performing specialized function within the cell. The type of organelles vary from organisms to organisms.
Explanation:
1. Centrioles are the cell organelles in which the spindle fibers are organized to which the chromosomes attach and mitotic division takes place. These are present only in animals and they are absent in plant and fungal cells.
2. Vacuoles are the storage organelles which store excess water, waste metabolites, sugars and other components in them. In plant cells they are of larger size whereas the vacuoles are small in size in case of the animal and fungal cells.
3. The plants cells and fungal cells have cell wall made up of cellulose (plants) and chitin (fungus) respectively. The cell wall is absent in animal cells.
4. The plant cells and fungal cells do not possess cilia and flagella for locomotion whereas animal cells have cilia and flagella.
