In aqueous solutions, the charged hydrophilic heads of phospholipids are attracted to the water phase, and the nonpolar hydrophobic tails are repelled.
What do you mean by Phospholipids?Phospholipids may be defined as ad amphipathic molecule that consists of fatty acids, a phosphate group, and an alcohol attached to the phosphate.
The hydrophilic heads of the phospholipids are water-loving which consists of the phosphate group while the hydrophobic tails of the phospholipids are water-hating that comprises of fatty acids.
Therefore, in aqueous solutions, the charged hydrophilic heads of phospholipids are attracted to the water phase, and the nonpolar hydrophobic tails are repelled.
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How can something that happens in a terrestrial system affect an aquatic system? Give an example.
Answer:
Strong hydrologic connections among terrestrial and inland aquatic realms exist in both river floodplains and dryland ecosystems. In the evolution of river floodplains terrestrial vegetation diversifies inland aquatic habitats, providing a range of colonization options for different organisms
Explanation:
What is a chromosome?
Answer:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Explanation:
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus. DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.
Answer: A chromosome is a thread-like structure made up of DNA. Chromosomes are found in the nucleus of each cell
or just DNA makes up a chromosome
Explanation:
hope this help
I need help. The class of macromolecule that would most likely be involved in contracting muscles would be ?
As human populations have changed over the years, people have altered the course of rivers and other waterways to better suit their needs. one approach has been through the damming of certain rivers. over time, many people question whether this effort has been beneficial. what are the negative impacts of damming a river that are being assessed?
dams allow more water to flow into nearby reservoirs, increasing the chances of disease transmission.
dams cause increases in salmon populations because more water is available for them to live in.
dams reduce salmon stocks, which reduces revenue and overall whale populations.
dams allow for invasive species to move around more easily, which reduces biodiversity.
Dams allowing more water to flow into nearby reservoirs thereby increasing the chances of disease transmission is its negative impact and is denoted as option A.
What is a Dam?This is a form of barrier which restricts the flow of water for different reasons such as reservoirs, electricity generation etc.
Since the water flows to reservoirs in close proximity, it increases the risk of disease transmission such as malaria etc.
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Please refer to the passage to
help you answer the problem.
What is the charge of the
electrical impulses sent from
stimuli?
A. Extremely positive
B. Exactly neutral
C. Negative
D. It depends on the location.
The charge of the electrical impulses sent from stimuli is extremely positive. Thus, the correct option is A. The net charge of such electrical impulses is positive because of the positively charged ions of the Na+.
What is an electrical impulse?An electrical impulse may be defined as a nerve impulse that contains an electrical signal which travels throughout the body by the axon terminal.
In the resting potential state, the potential difference is -80mV, while after reaching the electrical impulse it changes to +40mV. This happens due to an electrical imbalance between sodium and potassium influx and efflux.
Therefore, the correct option is A.
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What is Immunotherapy? explain in your own words, please:(
What would be the percentage of Thymine (T) based on the following data
of wheat DNA:
A%= 27.3 C %= 22.7 G%=22.8 T%=??
Answer:
T%=27.2
Explanation:
This is because if you add 27.2% to the percentages given on the statement it all adds up 100% or A and T must equal to the same or close percentage as they are complementary to each other
Evidencia de los colonos de Washington
what is ecological succession?
Answer:
Yellow
Explanation:
The change an ecosystem experiences over time
The change in ecosystem experiences over time.
In simpler words, the process in which there is a change in species, as well as habitat, occurs over some time.
If the chordae tendineae in the right side of the heart were damaged, it might cause blood to leak into the:
Answer:
Right Atrium
Explanation:
Chordae tendinae are located in the ventricles of the heart. Their function is to prevent the valves between the ventricles and atria from opening the wrong way. Damage to them would cause the valve flaps to open during ventricular systole, sending blood back into the atria.
What is a feedback mechanism?
What is a feedback mechanism?
A feedback mechanism is a physiological regulation system in a living body that works to return the body to its normal internal state, or commonly known as homeostasis. In nature, feedback mechanisms can be found in a variety of environments and animal types. Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself.
Examples:
Menstrual cycle. At the beginning of the menstrual cycle, the ovaries release the hormone estrogen. The estrogen acts as a stimulus for the positive feedback loop. ...Childbirth. Figure: Normal childbirth is driven by a positive feedback loop.
What is the relationship between matter and energy?
Blood pumps through arteries due to contraction of the arterial walls but flows more freely through veins because there is little to no contraction. Based on this information, which would you expect to be present in higher quantities in arteries than in veins
Excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.
What are Excitable cells?Excitable cells are defined as those cells that are capable of generating electrical impulses when stimulated. Example of such cells include:
Neurons,muscle cells( smooth, skeletal and cardiac)Endocrine cells.The artery is made up of higher amount of smooth muscles than the veins therefore, excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.
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A club fungus has an erect, above-ground fruiting body and long, branching, underground hyphae.
A club fungus has a thick stem and an umbrella top-shaped head having many irregular-shaped particles spread all over the head.
How do the structures of the fruiting body and hyphae relate to their functions?
Answer:The fruiting body is tall to maximize photosynthesis, while the hyphae are branched to support the release of waste products.
Explanation:I took the test and had the question.
A scientist is studying an aquarium ecosystem that contains water, plants, and fish that eat those plants. The aquarium has glass walls so light can get in, but it is sealed so no material can move into or out of the tank. When the scientist turned the aquarium's light on, carbon dioxide in the water started decreasing. How is carbon moving and what is happening to the amount of carbon in the living things inside the aquarium? Explain your thinking as completely as possible.
PLEASE PLEASE PLEASE CAN SOMEONE HELP ME WITH THIS QUESTION!!!
IT'S DUE IN LESS THAN 15 MINUTES
Carbon moving and what is happening to the amount of carbon in the living things inside the aquarium is by photosynthesis.
What is aquarium?
An aquarium (plural aquariums or aquaria) is a vivarium, usually contained in a clear-sided container (typically constructed of glass or high-strength plastic) in which water-dwelling plants and animals (usually fish).
According to this question, the aquarium contains water, plants and fish. The glass of the aquarium is transparent and allows the passage of light. Plants are unique set of organisms that have the ability to produce their own food (organic molecule) using the energy from light which they absorb via the Chlorophyll pigment in their Chloroplast. This process carried out by plants is called PHOTOSYNTHESIS.
The amount of carbon in form of carbondioxide (CO2) decreases when the light was switched on in the aquarium due to the process of photosynthesis carried out by the plants.
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A person cannot produce several types of lipases and amylases. name a problem this individual would have and explain why.
A person cannot produce lipases and amylase due to mutations in the genes that encode enzymes required to break down fats and starch.
What are lipases and amylase?Lipases and amylase are two types of enzymes required to break down fats and starch, respectively.
Mutations in the genes that encode these enzymes may lead to the production of defective proteins.
In conclusion, a person cannot produce lipases and amylase due to mutations in the genes that encode enzymes required to break down fats and starch.
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How does the circulatory and respiratory system work together?
18. identify the three conditions under which ionic reactions can run to completion, and write an equation for each.
Formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.
What are the three conditions under which ionic reactions completed?The three conditions under which ionic reactions can run to completion i.e. formation of a gas, formation of a precipitate and formation of a slightly ionized product.
K+(aq) + Br−(aq) + Ag+(aq) + C2H3O2−(aq) → K+(aq) + C2H3O2−(aq) + AgBr(s)
Mg2+(aq) + SO42−(aq) + Ba2+(aq) + 2NO3−(aq) → Mg2+(aq) + 2NO3−(aq) + BaSO4(s)
So we can conclude that formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.
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Carbon can be found in shells and
rock at the bottom of
sedimentary
oceans in the form of...
A. carbonic acid.
B. calcium carbonate.
C. carbon dioxide.
ہے
Answer:
B IS THE ANSWER
Explanation:
I THINK SO
HELP ME IM ALMOST DONE
Answer:
option B
should be right answer for the question
Answer: B
Explanation:
The sides of the DNA ladder are made up of a phosphate and:
a sugar called deoxyribose
a plasma called hemoglobin
a chemical called neuclaic acid
an acid called chlorophyll
Answer:
A sugar called deoxyribose.
Explanation:
DNA is made up of molecules called "nucleotides". These are:
A phosphate groupA pentose sugar [deoxyribose]A nitrogen-containing base [adenine, thymine, guanine and cytosine]Thus the first option is the right answer.
Reasons why the other options are wrong:
"A plasma called haemoglobin" is wrong as plasma and haemoglobin are related to the blood.
"A chemical called nucleic acid" is wrong as it is not what DNA's made up of. DNA and RNA are nucleic acids themselves.
"An acid called chlorophyll" is wrong as chlorophyll is related to plants.
Although the integument is a covering, it is by no means simple, and some of its functions include Group of answer choices epidermal blood vessels serving as a blood reservoir. the dermis providing the major mechanical barrier to chemicals, water and other external substances resident macrophage-like cells whose function is to ingest foreign invaders and present them to the immune system cooling the body by increasing the action of sebaceous glands during high temperature conditions
The functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
What is the integumentary system?The integumentary system is a physical barrier that separates the body from the external environment.
This barrier (integumentary system) is fundamental for the immune system due to the presence of macrophage-like cells.
In conclusion, the functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
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Answer:
Explanation:
If you have black hair and
someone else.has red hair these
are two versions of the same
gene, what is this called
scientifically?
Answer:
Codominance
Explanation:
In genetics, codominance refers to a type of inheritance in which two variants (alleles) of the same gene are expressed differently in one individual, resulting in different phenotypes.
One tool scientists use to learn about the weather is radar. to use radar, a weather tower sends out radio waves and then detects the waves that are reflected back to the tower. how does radar tell scientists about the weather in a given area?
a. clouds at a higher temperature reflect more radio waves.
b. air at a lower pressure reflects fewer radio waves.
c. heavier rain or snow reflects more radio waves.
d. clouds that hold less moisture reflect more radio waves.
A radar can indicate to scientists the weather in a given area because rain or snow reflects more radio waves (Option C).
What is a weather radar?A weather radar is a device used in meteorology in order to predict weather conditions.
This device (weather radar) sends waves into the atmosphere in order to identify any type of precipitation.
In conclusion, a radar can indicate to scientists the weather in a given area because rain or snow reflects more radio waves (Option C).
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4. Describe the design solution engineers and scientists developed to prevent contamination of Cleveland drinking water. Why did their solution need to address both sub-problems equally?
Cleveland drinking water is treated to ensure safety before its consumption (this process involves the removal of debris, flocculation, etc).
What is water treatment?Water treatment refers to the strategies aimed at enhancing water quality to be consumed and/or used in agriculture.
Cleveland water experience a complex process that involves the removal of debris, flocculation, filtration, etc.
In conclusion, Cleveland drinking water is treated to ensure safety before consumption (this process involves the removal of debris, flocculation, etc).
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The images show two different types of Galapagos tortoises that scientists believe descended from the same species. The first type (left) are found on islands that have high vegetation and few grasses. The second type (right) are found on an island that has large amounts of grasses and low-lying shrubs. What explains the type of turtle found on the islands with high vegetation?
A.
The environment triggered a gene mutation in neck length in order to help the turtle survive.
B.
Mutations are random, so it is by chance that turtles with longer necks live on these islands.
C.
Turtles with genes for long necks had a better chance of surviving to reach reproductive age.
D.
Turtles with short necks completely lacked adaptations for finding food, so they died off.
Turtles with genes for long necks had a better chance of surviving to reach reproductive age due to ability to reach the food source.
What type of turtle survive on the Island?Turtles with genes for long necks had a better chance of surviving to reach reproductive age because the long neck enables the turtles to reach the food source that is present on a certain height. So they are able to survive and complete its life cycle.
So we can conclude that option C is the right answer.
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"The images show two different types of Galapagos tortoises that scientists believe descended from the same species." the type of turtle found on the islands with high vegetation. Turtles with genes for long necks had a better chance of surviving to reach reproductive age. Option C. This is further explained below.
What is the Galapagos tortoise?Generally, the Galapagos tortoise is simply defined as the Galápagos gigantic tortoise, belongs to the genus Chelonoidis and is the largest species of tortoise.
In conclusion, a turtle species typical to islands with dense flora. Those turtles that had the genes for a longer neck were more likely to live to reproduce.
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Why is it a good idea to study experimental subjects in their natural environment? OA. So that a specific problem can be solved as quickly as possible OB. So that the experiment is cheaper and easier to conduct C. So that they respond to the test as they would under normal conditions O D. So that no one else will know what is being studied
How does water cycles involve biotic and abiotic factors?
Answer:
This recycling process involves both the living organisms (biotic components) and nonliving things (abiotic factors) in the ecosystem. Through biogeochemical cycles, water and other chemical elements are constantly being passed through living organisms to non-living matter and back again, over and over.
Explanation:
write three characteristics of fungi
[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{What \: is \: fungi?}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
Fungi is single celled micro organism, which grows in plants or soil. Fungi can be mostly found on soil or dead plants or dead matter.
[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{Write \: three \: characteristics \: of \: fungi}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
[tex]\green\star[/tex]Three characteristics of Fungi are:
Fungi reproduce through spores. Fungi are mostly Eukaryotic or single celled. Fungi can play major role in recycling.[tex] \boxed{ \frak \red{brainlysamurai}}[/tex]