HIV contains an outer membranous envelop beyond its capsid that helps attach to receptors on the host cell surface.
HIV or Human Immune Virus is a contagious, parasitic virus that destroys the immune system of its host. If left unchecked, it could develop into AIDS (Acquired Immune Deficiency Syndrome). The virus spreads through contact with the body fluids of an infected person. Unfortunately, no cure has been currently found, but there are drugs that can help to control the symptoms and slow down the activity of the virus.
Like any other virus, HIV has a capsid or protein coat. This protein coat protects and houses their DNA or RNA strand. Beyond the capsid is an outer membranous envelop. This envelop differs in different types of viruses, depending on the type of receptors and host cell they would have to attach to.
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Based on the passage, which factor directly limits the number of seals in a population?
A.
The amount of ocean water
B.
The number of polar bears
C.
The amount of dry land
D.
The amount of sunlight
Answer:
The amount of ocean water
If ammonia is used as an energy and electron source by a bacterium, that bacterium would be considered a ___.
If a bacterium uses ammonia as an energy as well as electron source, it is classified as lithotrophic chemotrophic.
Descriptive terms for lithotrophic chemotrophic:Humans, fungi, and also many prokaryotes are chemotrophs that get their energy from organic chemicals. Lithotrophs are chemotrophs that obtain energy from inorganic substances such as hydrogen sulfide (H2S) as well as reduced iron. Lithography is a microbiological phenomenon that is unique in the globe.
What is the difference between chemoautotrophs and chemolithotrophs?Chemotrophs are creatures that get energy from their surroundings by oxidizing electron sources. These compounds might well be organic (chemoorganotrophs) or inorganic (chemoorganotrophs) (chemolithotrophs). The term chemotroph is used in contrast to phototroph, which uses solar energy.
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Even a country in which the birthrate and death rate are equal can experience population growth if it also has.
Answer:
If there is a number of immigrants coming into the country.
Explanation:
If immigration is taking place, as in people are moving into that country from abroad, that means the population is growing. I am not 100% if that is what you are asking, but I hope this helps!
The hypothesis that intelligence is in part inherited is best supported by the fact that the iq correlation for.
PairsPairs of identical twins is greater than for pairs of faternal twins.
What evidence exists for a genetic components to an Individual IQ?According to studies, identical twins may have more similar IQ scores than fraternal twins. The IQs of siblings who grew up together in the same environment are more similar than those of adopted children who lived with their parents.
Faternal twins may not have same sex appearance but half their genomes just like an siblings. In contrast, identical twins result from the fertilization of single sperm ,with fertilized efg then splitting into two.
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Controlled experiment
Which discovery did scientists make at mid-ocean ridges that caused them to conclude that new rock was being
formed by molten material?
O magnetic banding
rocks with similar characteristics
Scientists make at mid-ocean ridges that caused them to conclude that new rock was being formed by molten material pillow-shaped rocks.
Why was the discovery of mid-ocean ridges important?Wegener's theory was able to be expanded to include the movement of oceanic crust in addition to the movement of continents thanks to the discovery of mid-ocean ridges and the process of seafloor spreading.
How were mid-ocean ridges discovered?A mid-ocean ridge was not even known to exist until the 1950s, when it was discovered through surveys of the ocean floor carried out by research ships. This is because it is submerged at very deep depths in the ocean.
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I understand question looking for :
Which discovery did scientists make at mid-ocean ridges that caused them to conclude that new rock was being formed by molten material?
magnetic banding
pillow-shaped rocks
older rocks farther from the ridge
rocks with similar characteristics
Certain types of bacteria living in soil use ammonium ions from nitro gen fixation or the waste of decomposers to perform ___________
Answer: Rhizobium or Bradyrhizobium
Explanation:
Why do st. george, ut and salt lake city, ut have different climates?
Salt Lake City seems to be in a distinct state than southern Utah and the majority of the area east of the Wasatch.
In the vicinity of Salt Lake, several quite different geological regions are combined, so if you drive a few hours in any direction, you'll be in a very different region. For instance, if you travel east to Vernal, you'll think you're in a St. George suburb in the far southwest of the state. Even though St. George is over two hours away from Las Vegas, it is essentially a satellite of that city. It is located in a stunning red rock region with fields of black lava stone surrounding dormant volcanoes, canyons, arches, and palm trees. Geologically speaking, rather than merely politically, it seems like another planet. Culturally, anyone from Utah will feel at home in St. George, if they can endure the heat. It is still a very LDS town, but it is still managed by a small group of old-guard families who came here at Brigham Young's request nearly fifty years ago. Growing numbers of people have relocated from Northern Utah to this area, and an increasing number of people who grew up here and are happy to return are doing so now that the local economy is robust enough for them to do so.Learn more about the salt lake city with the help of the given link:
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How does water having high specific heat capacity and high heat of vaporization help life on earth?.
Having high specific heat capacity and high heat of vaporization helps to sustain life on Earth as heat is absorbed by the water and released slowly, which helps to sustain life.
Water has a specific heat of vaporization. Around 40,000 Joules of energy are required for vaporizing one mole of water. It is due to this heat of vaporization, that water has the ability to store excess heat and release it slowly. Such an effect causes the Earth to tolerate the temperature changes caused by heat from the Sun.
The high specific heat capacity of water helps life on Earth by maintaining ocean temperatures so that aquatic life can survive. As a major part of the Earth is water, hence the specific heat capacity of water absorbs sunlight hence protecting the Earth from high-temperature changes.
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Approximately how many atoms thick is a cell membrane, assuming all atoms there average about twice the size of a hydrogen atom?.
There are around 50 atoms in the cell membrane.
Knowing that the thickness of a cell membrane is somewhere between 7.5 and 10 nm will allow you to divide 7.5 and 10 by 0.2 nm, where 1 nm equals 1*109 m.
The cell membrane is roughly 37.5 and 50 atoms thick, according to the two answers of 47.5 and 50.
A hydrogen has a diameter of 10^ -10 m. A cell membrane has a 10^8 m thickness.
The formulae of thickness in terms of number of atoms = d /2 × D
Here the (d) = the diameter of membrane
The (D) = The diameter of hydrogen atom
The diameter of hydrogen atom = 10^-10 m
The thickness of membrane = 10^8 m
by substituting these value in above formulae
The number of atoms = 10^8 /2 × 10 ^−10 m
= 50 atoms
Consequently, the thickness of a cell membrane is equivalent to 50 atoms' total thickness.
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Describe a chemical indicator. What is it? What is it used for? How does it work?
Please be really descriptive in your answer.
Answer:
A chemical indicator is a substance that changes color in the presence of a chemical reaction. Indicators are used in titrations to determine the point at which the reactants have been used up and the products have been formed. In acid-base titrations, indicators are used to determine the point at which the solution changes from acidic to basic. In redox titrations, indicators are used to determine the point at which the solution changes from reductive to oxidative.
Explanation:
Give me brainliest if that helped :)
When a big fish swims into an oncoming smaller fish and swallows it, the momentum of the two-fish system _______.
When a big fish swims into an oncoming smaller fish and swallows it, the momentum of the two-fish system remains the same.
In this case, the Law of conservation of momentum principle is used as when a big fish swims into a smaller fish and also swallows it, then there will be no change in the system as the momentum of the two-fish system remains the same.
But when the momentum of the big fish exists in the same condition but since the final momentum is to be true, there arises a combined mass of the big fish as well as the small fish, whereas the case of speed must be reduced.
The Law of conservation of momentum is important as it states that the total momentum that occurred in the initial state of the system remains the same as the momentum that exists in the final state of the system. This conservation principle helps to determine the initial and final velocity of a system that undergoes collision. This collision can be either elastic or inelastic. According to this theory, the momentum of the two fish systems remains here.
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Which statement illustrates bias in scientific research?
When one result or response is "systematically incorporated into sampling or testing by selecting or promoting one answer above others," bias is present in the study.
Bias can appear at any stage of the research process, including study design, data collecting, data analysis, and publishing.
How is prejudice impacted by research?If the researcher allows his prejudice to skew the measurements, observations, or their interpretation, bias can harm the research. It is unfair to all of the students when professors assess some students more or less favourably than others in their courses due to teacher prejudice.
Encourage critical thinking about the working hypothesis and give it thorough consideration. Make certain that all interested parties review the source data. Do not rely on the analysis and summarization of a single person. Create tests to validate your theory.
Research bias, also known as experimenter bias, is the process through which the scientists doing the research skew the findings to support a certain hypothesis.
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Which organism from kingdom protista is most closely related to animals?
a) paramecium spp.
b) choanoflagellates diatoms
c) red algae
d) amoeba spp.
Choanoflagellates diatoms from kingdom Protista is most closely related to animals.
The choanoflagellates are a class of unicellular and colonial flagellate eukaryotes that live in free-living environments and are thought to be the closest living relatives of animals. Choanoflagellates are collared flagellates; at the base of each flagellum, they have a funnel-shaped collar of intertwined microvilli.The Choanoflagellates are not a varied group of protists, with only 150 species in total. The name "collar-flagellates" comes from the ring of densely grouped microvilli, or thin fingerlike projections, that surrounds the single flagellum by which choanoflagellates both move and take in food. They are tiny single-celled protists that can be found in both freshwater and ocean environments. The collar appears as a single transparent unit in light microscopy because the microvilli are so closely packed, as shown in these illustrations.Therefore, option (b) is correct.
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Metformin alleviates human cellular aging by upregulating the endoplasmic reticulum glutathione peroxidase 7
Metformin is thought to activate Nrf-2, resulting in increased production of endoplasmic reticulum glutathione peroxidase x7.
A modest dose of metformin, according to one research, enhances endoplasmic reticulum localized glutathione peroxidase 7. (GPx7). GP7 expression levels are lowered in senescent human cells, and GPx7 inactivation promotes early cellular senescence. Metformin also increases the nuclear concentration of nuclear factor erythroid 2 related factor 2 (Nrf2), which binds to antioxidant response sites in the GPX7 gene promoter and increases its expression.
Metformin has also been shown to be effective in lowering DNA damage and promoting DNA repair. Metformin preserves nuclear and mitochondrial DNA and enhances DNA repair by neutralizing free radicals. DNA damage is also thought to be a cause of aging in human cells.
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PLS PLS HELP! BRAINLIEST 25 POINTS!
Where do most hurricanes originate?
A. near the South Pole
B. in the equatorial region
C. in the Eastern hemisphere
D. below the ocean’s surface currents
Answer:
The answer is c.
Explanation:
Answer:
Most of the hurricanes that hit the United States come from Africa. It's a point off West Africa's coast near Cape Verde. High altitude winds form as a result of two clashing climates. The hot, dry Sahara dessert and the cooler, wetter regions to the south. The answer is C because Africa is in the Eastern Hemisphere
Explanation:
which population of flamingos is more dense : 15 flamingos in a 5 square meter area or 40 flamingos in a 10 square meter area
15 flamingos in a 5 square meter is only 3 flamingos per square meter. The correct answer is 40 flamingos in a 10 which is square meter is 4 flamingos per square meter.
The collective noun to describe a gathering of flamingos is flamboyance, an appropriate term for these colorfully-feathered creatures. They flock together by the thousands on salt flats, lagoons, lakes, and swamps around the world, where they can filter-feed for shrimp, algae, and insects.
Flamingos are serially monogamous. They mate for one year, get divorced, and find a new mate the next year. New mates are mutually agreed upon males and females both dance in search of a compatible partner.
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15 flamingos in a 5 square meter is only 3 flamingos per square meter. The correct answer is 40 flamingos in a 10 which is square meter is 4 flamingos per square meter.
40 Flamingos in a 10 which is square meter is 4 flamingos per square meter.
The average number of people in a population per unit of area or volume is known as population density. An area of 100 square metres with a population of 100 insects has a density of 1 bug per square metre.
The amount of people in a place is gauged by its population density. It is a typical value. By dividing the total population by the available space, population density is determined. The number of persons per square kilometre is the most used measure of population density.
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In a nucleic acid polymer, the hydrogen bonds that help to hold regions of double-strandedness together occur between what parts of the nucleotide monomers?.
Answer:
Between opposite nitrogenous base in the complementary strand[tex].[/tex]
Explanation:
The hydrogen bonds, hydrophobic interaction and stacking found in the DNA helps in providing stability to the structure of DNA. Hydrogen bonds are found between the opposite nitrogenous bases of two complementary strands. There are two hydrogen bonds between A and T and three between C and G.
Watch this video, and explain how Dr. Collins used critical thinking to develop his concussion-monitoring device.
Dr. Collins built and designed his instrument based on facts—the recognized concussion symptoms. He needed to learn more about how concussions affect the brain and how people react to cognitive activities. He became aware of a weakness in the way concussions are currently handled. Many athletes don't treat the injury properly or put off getting help, which might have long-term negative effects. The latest device from Dr. Collins both looks for potential injuries and keeps track of healing. Thus, it meets a demand for concussion treatment.
What is critical thinking?
The mental process of actively and carefully perceiving, analyzing, synthesizing, and evaluating information gathered through observation, experience, and conversation that results in a decision for action is known as critical thinking.
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Vasoconstriction is caused by ______ stimulation of vascular smooth muscle and ______ stimulation of vascular smooth muscle causes vasodilation.
Vasoconstriction is caused by sympathetic stimulation of vascular smooth muscle and parasympathetic stimulation of vascular smooth muscle causes vasodilation.
The narrowing (constriction) of blood arteries by tiny muscles in their walls is known as vasoconstriction. Blood flow is delayed or halted as blood vessels close. Vasoconstriction can range from mild to severe. It might be brought on by a sickness, medication, or psychological issues.Norepinephrine's interaction with postsynaptic -adrenergic receptors is the main mechanism by which sympathetic innervation of the peripheral vasculature promotes vasoconstriction. The majority of the body's blood arteries lack parasympathetic innervation. However, salivary glands, gastrointestinal glands, and vaginal erectile tissue are all innervated by parasympathetic neurons, which results in vasodilation. The parasympathetic division causes the body to go into "rest or digest" mode, typically lowering blood pressure and heart rate.Blood arteries often expand in response to parasympathetic stimulation, increasing blood flow but decreasing pressure.learn more about Vasoconstriction here: https://brainly.com/question/4359984
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What type of training must you take before working with materials known to cause disease?
Answer:
Biosafety Training
Explanation:
5. An adaptation is an inherited characteristic that helps an organism
survive and reproduce in its environment. Over time, adaptations
become more and more common in the population. For example,
suppose that the water in a pond gets darker over a period of fou
years. The diagrams and table below show what might happen to a
frog population living in the pond.
Answer:
year light-colored frog dark-colored frog
1 6 2
2 4 4
3 2 6
6 0 8
question 1 - year 1
question 2 - dark-colored frogs increased while light-colored frogs decreased.
question 3 - dark-coloring is better suited for survival at year 3.
question 4 - dark color arose from mutation.
question 5 - yes, mutations arise randomly.
In the interaction cycle, what human-related task occurs immediately prior to and provides context that helps bridge the gulf of evaluation used to understand objects, properties and events?.
The human-related job comes first and provides context that helps close the assessment gap utilised to comprehend how things, such properties and events, are being perceived and interpreted.
Successful evaluation requires the perception of the system-status signal as well as the interpretation of what it entails. Users must complete these associated actions in order to be allowed to cross this gap. Users are able to comprehend the system's state once they complete this assignment. Evaluation is the modern phrase for that.
A human resources manager, also referred to as a labour relations manager, develops employee benefit plans, advocates for employees, and fosters workplace diversity.
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Why was disc E soaked in water?
If your doctor told you that you are suffering from a dysfunction in a ______, you would know the relevant structure was in the peripheral nervous system.
If your doctor told you that you are suffering from a dysfunction in a Tract , you would know the relevant structure was in the central nervous system.
Motor neurons in your peripheral nervous system are used by your central nervous system's hungry brain to activate and control the muscles in your arm and hand. Your brain interprets the information from your central nervous system as you take up the fork, allowing it to continue directing the fork to your mouth.
Almost every element of our health and wellbeing is influenced by the neurological system. It directs simple processes like waking up, automatic ones like breathing, and intricate ones like thinking, reading, remembering, and experiencing emotions. The development of the brain is governed by the nervous system.
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A large island in the Pacific Ocean supports isolated populations of two groups of frogs. The following observations of these
frogs were recorded by scientists.
(A) Are different in color
(B) Excrete different products
(C) Live in different, isolated habitats
(D) Can interbreed and produce fertile offspring
Which observation best supports the inference that these frogs belong to the same species?
A. A
B. B
C. C
D. D
Answer:
D
Explanation:
The other factors have nothing to do with their relation to each other
What organelles would a nonphotosynthesis alga need to obtain in order to carry out photosynthesis?
chloroplast organelles would a nonphotosynthesis alga need to obtain in order to carry out photosynthesis
What organelles are required for photosynthesis in an algal cell?Photosynthesis takes place in the chloroplast, a specialised intracellular organelle found in plants and algae, which emerged considerably later. During the day, photosynthesis is carried out by chloroplasts. The photosynthetic cells employ the immediate results of photosynthesis, NADPH and ATP, to create a variety of chemical compounds.
Non-photosynthetic species must rely solely on photosynthesis to obtain the energy they require to exist, which highlights the significance of photosynthesis to them. To continue to exist, all living things must use energy, which ultimately originates from the sun.
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This epithelial tissue forms the kidney tubules, and the ducts and secretory portions of small glands.
Simple cuboidal epithelia forms the kidney tubules, and the ducts and secretory portions of small glands.
What are epithelial cells?Epithelial cells are the cells that cover the inside and outside of your body's surfaces.They are responsible for the formation of our skin, blood vessels, and organs, including your urinary tract.They also make up your skin's outer layer (epidermis), the lining of your intestines, the lining of your respiratory tract, the lining of your abdominal cavity, and your sweat glands.Epithelial cells can have different shapes depending on the type of tissue they are found in and the functions they perform, and they can be arranged in a single layer or multiple layers. The most common site for cancer development is epithelial tissue. Carcinomas develop from epithelial tissue and account for up to 90% of all human cancers.To know more about epithelial cells:
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Which of the proteins in involved in the contraction of smooth muscle is incorrectly paired with its function?
Myosin light chain phosphatase - removes the phosphate from actin is the incorrectly paired with its function.
What are smooth muscles?Smooth muscle is so named because it lacks sarcomeres and thus no striations (bands or stripes).Smooth muscle is found in the walls of hollow organs like the intestines, uterus, and stomach. They are also found in the walls of the cardiovascular system's passageways, arteries, and veins.Smooth muscles contract to control blood pressure and other cardiovascular functions. They also aid in food digestion by stimulating peristalsis. Smooth muscle is divided into two types: single-unit smooth muscle and multi-unit smooth muscle. Smooth muscle with multiple units. Smooth muscle cells are striated, spindle-shaped, and have a single central nucleus. Smooth muscle cells are arranged in sheets, and because of this, they can contract at the same time.To learn more about smooth muscle:
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What does Climate Efficiency mean?
