Explain the role of lipids, carbohydrates, and proteins in the cell membrane.
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III
Answers
Lipids provide structure - allow the selective diffusion. Proteins provide structure - involved transport - involved in cell adhesion. Carbohydrates are involved in cell recognition - receptor complexes.
What is the function of lipids, carbohydrates, and proteins in the cell membrane?The cell membrane is composed of a lipidic bilayer, cholesterol, proteins, and glucans incrusted in between.
⇒ Lipids
Phospholipids are amphipathic molecules.They have hydrophilic heads facing the exterior and the interior of the cells and hydrophobic tails that arrange against each other in the interlayer space.Lipids can easily change places with other lipids by lateral diffusion and transversal diffusion. Their function is to provide structure to the membrane and allow the diffusion of some selected small molecules.⇒ Cholesterol
These lipidic molecules play a significant role in membrane formation and structure. They are embedded in the membrane in between phospholipidic tails.
⇒ Carbohydrates
Carbohydrates are significant energy store molecules.
Carbohydrates get attached to lipids and proteins on the outer side of the membrane (glycolipids and glycoproteins).
Complexes protein-carbohydrate are used to identify and differentiate the cell and work as receptors.
Carbohydrates are also involved in cell adhesion.
⇒ Proteins
Among the proteins, we can find integral proteins and peripheric proteins.Integral proteins are permanently associated with the membrane. They accomplish many different functions such as substances transport, cellular receptors, and cellular adhesion, among others.
According to how they are incrusted in the lipidic bilayer, integral proteins might be,
→ Transmembrane proteins ⇒ they cross the two lipid layers of the cell membrane.
→ Monotypic integral proteins ⇒ they can be found tied to one of the lipidic layers.
Integral proteins provide structure to the plasmatic membrane.
Periferic proteins are in the internal or external surface but not incrusted in the membrane.
In conlusion,
Phospholipids are the basic elements of the cell membrane. They are arranged in two layers, and thanks to their motion properties, they allow passive transport (diffusion) of some substances.Proteins provide structure, are involved in facilitated and active transport, and are involved in cell adhesion. Carbohydrates are involved in cell recognition and in receptor complexes.You can learn more about membrane composition at
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Related Questions
Are gender traits completely a result of societal expectations? Justify your answer.
Answers
Answer:
No. Gender traits in humans are largely determined by biophysical processes.
Explanation:
There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary. But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to. This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development.
using stem cells from is controversial, and people believe they should not be tampered with, even if the procedure could save lives
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Stem cell lookup presents remarkable promise for understanding basic mechanisms of human improvement and differentiation, as properly as the hope for new redress for illnesses such as diabetes, spinal cord injury, Parkinson’s disease, and myocardial infarction. However, human stem cell (hSC) research additionally raises sharp moral and political controversies. The derivation of pluripotent stem cell strains from oocytes and embryos is fraught with disputes about the onset of human personhood. The reprogramming of somatic cells to produce brought on pluripotent stem cells avoids the moral issues particular to embryonic stem cell research. In any hSC research, however, dilemmas arise involving sensitive downstream research, consent to donate materials for hSC research, early medical trials of hSC therapies, and oversight of hSC research. These moral and policy issues want to be discussed along with scientific challenges to make certain that stem mobile lookup is carried out in an ethically fabulous manner. This article affords a crucial evaluation of these issues and how they are addressed in contemporary policies.
Stem cells are the body's uncooked substances — cells from which all other cells with specialized functions are generated. Under the right prerequisites in the body or a laboratory, stem cells divide to shape more cells known as daughter cells.
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Anaerobic and aerobic cellular respiration are both biological processes that result in the production ATP molecules. Which of the following best compares anaerobic and aerobic cellular respiration?
a Aerobic respiration occurs in the cytoplasm and anaerobic takes place in the mitochondria.
b Aerobic respiration only occurs in muscle cells and anaerobic occurs in blood cells.
c Aerobic respiration produces alcohol and anaerobic respiration produces lactic acid.
d Aerobic respiration uses oxygen and anaerobic respiration does not.
Answers
Answer:
the answer would be D.
Explanation:
Anaerobic respiration and aerobic respiration produce ATP. Aerobic respiration uses oxygen. In anaerobic respiration oxygen is not used. Option d is the correct answer.
What is cellular respiration?Cellular respiration is a process in which a cell uses oxygen and carries out different cellular processes. In this process, energy is produced. There are two types of cellular respiration, such as aerobic respiration and anaerobic respiration.
In anaerobic respiration, oxygen is not used. An example is glycolysis. Glycolysis takes place in the cell cytoplasm. 2 ATP is released by this process.
In aerobic respiration, oxygen is used. Example: In the presence of oxygen, the pyruvate enters the Krebs cycle and the electron transport chain. This process takes place in the mitochondria.
In this aerobic process, the maximum amount of ATP is released. In aerobic respiration, the complete oxidation of glucose takes place , but in anaerobic respiration, complete oxidation does not take place.
Hence, option d is the correct answer. Aerobic respiration uses oxygen. Anaerobic respiration does not use it.
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pls help i need this ASAP i’ll give branliest
Answers
Answer:
Include the sun giving energy to plants
Explanation:
Please mark brainiest
Answer:
the first one include the sun giving plants energy
Pls this is science question pls answer this pleaseeeeeee ans this those who say wrong report plsssss!,!!!!!
Answers
Answer:
the answer to this question is option 2. it is so because sun rises in east and sets in west. and since noon is 2:00, at 4:30pm the sun will be at west
Answer:
Option 2
Explanation:
The sun rises in the east and sets in the west so, at 4:30 pm, it would have been starting to set down a little. Thus, the position of the sun would be at the west side and the shadow would be on the east side. Options 1 and 2 would be wrong. A shadow would only be short when it is at noon where the sun is directly above the person so Option 4 is also wrong. The correct answer should be Option 2.
As concentration of substrate is increased in a reaction catalyzed by an enzyme, the reaction rate will stop increasing once saturation is reached because.
Answers
As concentration of substrate is increased in a reaction catalyzed by an enzyme, the reaction rate will stop increasing once saturation is reached because all enzymes are actively engaged in a reaction.
In the field of science, enzymes can be described as biological catalysts that speed up a reaction.
An enzyme is specific for its activity as a specific substrate fits into the active site of the enzyme. When the concentration of a substrate is increased, the rate of reaction will also increase until saturation is achieved. This will be the point where there will be no more free active sites of enzymes left for substrates. Each enzyme will already be having a substrate at this point.
In order to further increase the reaction rate, the quantity of the enzyme should also be increased so that there are more active sites present for substrates.
Although a part of your question is missing, you might be referring to this question:
As concentration of substrate is increased in a reaction catalyzed by an enzyme, the reaction rate will stop increasing once saturation is reached because
A. There are too many enzymes available and not enough substrate
B. once the enzyme reacts once, they cannot react again
C. all enzymes are already engaged in a reaction
D. increasing substrate inhibits enzyme activity
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This happens when water vapor rises, cools off then gets closer together and forms clouds.
HELLLPPP
Answers
Answer:
Condensation....I think
Answer:
I would believe the answer is condensation. sorry if it's wrong, I haven't taken this course in a long time. <333
Which type of cells thrive in an isotonic solution?
a animal cells
b cells with a cell wall
c plant cells
d both plant and animal cells
Answers
Answer:
A 0.9% solution of NaCl (saline) is isotonic to animal cells. When exposing animal tissues to solutions, it is common to use an isotonic solution such as Ringer's buffered saline so as to prevent osmotic effects and consequent damage to cells.
Explanation:
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pick me as the brainliest
Answer:
the answer is A
if you look it up it gives you everything you need to know I hope that helps
2 for 1!!! PLEASE HELP
The nucleotide not found in RNA is:
Adenine
Thymine
Guanine
Cytosine
Uracil
---------------------------------------------------
The five carbon sugar found in DNA is:
Deoxyribose
Ribose
Glucose
Fructose
Answers
Answer:
RNA: Thymine, DNA: Deoxyribose
Explanation:
Hope this helps:)
The total amount of living tissue within given topics level is called
Answers
Answer: The answer is "biomass".
Explanation: yes
Brian is a detective who arrives at the crime scene before anyone else. What is TRUE about Brian
Answers
Answer:
He is prepared to get on the case early that way the evidence is still fresh
And no one has touched it
Explanation:
Answer:
He is Known as the First Responder to the Scene
Explanation:
he is the first person to arrive
Help pls. I will give brainliest.
A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a _______
It's either cuticle or sufficient root
Answers
Answer:
Sufficient root!Explanation:
took it last year
Answer:
Sufficient root.
Scientists use zebra fish to study human genetic diseases because zebra fish and humans
share many of the same genetic diseases.
Which statement describes why zebra fish experience similar genetic diseases as humans
F Zebra fish have an omnivorous diet similar to that of humans,
G Zebra fish have nucleotide sequences similar to those of humans,
H Zebra fish go through embryonic stages similar to those of humans,
Zebra fish produce gametes through a process that is similar to that of humans,
Answers
Answer: G - zebra fish have nucleotide sequences similar to those of human
Explanation:
Zebra fish have nucleotide sequences similar to those of humans is describes why zebra fish experience similar genetic diseases as humans.
What do you mean by nucleotide sequences?A nucleic acid sequence is a succession of bases signified by a series of a set of five different letters that indicate the order of nucleotides forming alleles within a DNA or RNA molecule.
The nucleotide sequence is the most fundamental level of knowledge of a gene or genome. It is the blueprint that contains the instructions for building an organism.
DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA.
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what are things Animal Cells have Only
Answers
Answer:
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation:
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Change in gene pool caused by movement of organisms into (increase genetic variation) or out of (decrease genetic variation) the population
Answers
Answer:
A
Explanation:
i got it right
the level of biological organization where factors such as sunlight, rainfall and temperature, as well as living organisms, come into play is the
Answers
the level of biological organization where factors such as sunlight, rainfall and temperature, as well as living organisms, come into play is the
The biotic (living) members of an ecosystem are highly dependent on such abiotic factors which include the weather, sunlight, water depth, salinity, and the availability of nutrients. Hence, the presence or absence of even one factor can greatly affect the ecosystem.
What is Biological Organization?
Scientists employ a concept called biological organization to classify live organisms into smaller and larger components. It aids in the organization of living things and the understanding of the components of life systems. From the smallest to the greatest level, each one symbolizes a different part of the organization. The stages of biological structure include of
AtomsMoleculesCellsTissuesOrgansOrgan SystemsOrganismPopulationCommunityEcosystemBiomeTo learn more about Biological Organization
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The number of individual organisms present in a given population at a given time is.
Answers
Answer:
7th Science Honors Ch. 4 Vocab
A B
population size: the number of individual organisms present in a population at any given time
population density: the number of individuals in a population per unit of area
population distribution: how organisms are arranged within an area; sometimes called population dispersion.
Explanation:
genomics can be used to study the genetic relationships among species. why might genomics be important for evolution research? explain.
Answers
The study of genomics can prove the theory of evolution. So, genomics is important for evolution research.
What is genomics?
The set of DNA of an organism is called its genome. There are 3 billion base pairs of DNA and virtually, every single cell in the body will have a complete copy of the letters, or codes that compose the human genome.
DNA has all the required information to build the entire human body. A unit of DNA carrying the instructions for the formation of a specific protein or a set of proteins is referred to as a gene. Every one of the 20,000 to 25,000 estimated genes in the human genome codes for an average of three proteins. Genomics is the study of genomes.
Therefore, the study of genomics can prove the theory of evolution. So, genomics is important for evolution research.
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What are some of the criteria a pharmaceutical company would want to meet if it is producing a drug for sale to consumers
Answers
Answer:
Fundamento: La industria farmacéutica a nivel internacional tiene entre sus estrategias la propaganda de medicamentos directa al consumidor, para incrementar sus ganancias.
Objetivo: Valorar cómo puede influir la promoción inadecuada en el uso racional de medicamentos y como se presenta en Cuba.
Metodología: Se realizó una búsqueda de información, en fuentes primarias y secundarias, sobre promoción y uso no adecuado de los medicamentos.
Resultados: Se encontró que la propaganda realizada de manera directa al consumidor genera un aumento de las ventas de los productos anunciados, lo cual hace de la promoción una herramienta esencial de marketing para la industria farmacéutica internacional, situación que no es uniforme, sino que varía de un país a otro con un denominador común: las anomalías mayores presentes en los países en desarrollo. La Organización Mundial de la Salud en 1988 publicó los “Criterios éticos para la promoción de medicamentos”, los cuales sirven de base para elaborar regulaciones sanitarias por parte de las autoridades nacionales de salud que permitan garantizar la calidad, seguridad y eficacia de los medicamentos.
Conclusiones. El trabajo conjunto entre autoridades sanitarias, profesionales de la salud y pacientes permitirá lograr un uso adecuado de los medicamentos sin el sesgo que conllevan los mensajes promocionales.
Palabras clave: Industria farmacéutica y ética; ética farmacéutica; control de la publicidad de productos¸ publicidad de medicamentos; tecnología farmacéutica y ética; preparaciones farmacéuticas; medicamentos sin prescripción.
DeCS: INDUSTRIA FARMACÉUTICA/ética; ÉTICA FARMACÉUTICA; CONTROL DE LA PUBLICIDAD DE PRODUCTOS; TECNOLOGÍA FARMACÉUTICA/ética; PREPARACIONES FARMACÉUTICAS.
Explanation:
trichodysplasia spinulosa polyomavirus small t antigen synergistically modulates s6 protein translation and dna damage response pathways to shape host cell environment
Answers
trichodysplasia spinulosa polyomavirus small t antigen synergistically modulates s6 protein translation and dna damage response pathways to shape host cell environment is
Unknown
Trichodysplasia spinulosa is a disfiguring skin disease caused by the trichodysplasia spinulosa–associated polyomavirus (TSPyV).¹ Like other polyomaviruses, TSPyV expresses the large T and small T (sT) antigens, but how these proteins regulate trichodysplasia spinulosa pathogenesis is unknown.
What is trichodysplasia spinulosa polyomavirus?
Trichodysplasia spinulosa is a rare cutaneous condition that has been described almost exclusively in immunocompromised patients, typically organ transplant recipients, on immunosuppressive medication regimens.
It is also known by many other names, including viral-associated trichodysplasia, viral-associated trichodysplasia, pilomatrix dysplasia, and ciclosporin-induced folliculodystrophy, although the latter name is incorrect. A total of 32 cases has been documented in the medical literature as of the beginning of 2016. Despite its rarity, TS is thought to be underdiagnosed, and the rising number of patients using immunosuppressive medication regimens raises the possibility that its occurrence may increase.According to some sources, TS is a developing infectious disease.
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Which statement best describes an environmental consequence of sustainable v
O Incinerators release fewer emissions into the atmosphere.
O Transporting waste to other countries saves land for housing.
O Ecosystems are saved when less land is used for landfills.
Sealed landfills can be capped for methane gas use.
Answers
Transporting waste to other countries saves land for housing statement best describes an environmental consequence of sustainable waste management.
Sustainable waste management strives to reduce the quantity of solid waste that's also disposed of in landfills or by incineration. Materials are kept in use for as long as feasible.
In addition to promoting a healthy natural environment that benefits both people and animals, sustainable waste management is essential to releasing precious land from landfills, enhancing energy production, creating jobs, and lowering the price of logistics and transportation.
Not only would reducing trash benefit the environment, but it will also save money or lower disposal costs.
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f a rabbit breeder crossed a white rabbit and a black rabbit in a complete dominance pattern, then all of the offspring would be either white or black in color. If the rabbits showed a pattern of incomplete dominance, breeding a white rabbit and a black rabbit together would produce all gray rabbits. Lastly, if the rabbits showed a pattern of codominance, then breeding a white rabbit and a black rabbit would produce rabbits with black and white spots. Using your knowledge of inheritance, explain how the genotypes produce different phenotypes in each inheritance pattern.
Answers
Answer:
- Complete dominance: one allele masks the expression of the other gene variant or the phenotype is caused by the absence of gene function when both alleles are recessive.
- Incomplete dominance (codominance): both alleles are expressed and contribute to the phenotype
Explanation:
Complete dominance is a type of dominance by which one allele (dominant allele) completely masks the effects of another allele (recessive allele) in heterozygous individuals (i.e., individuals carrying two different gene variants or alleles). On the other hand, codominance refers to a type of incomplete dominance where both alleles in the genotype are observed in the phenotype. Complete dominance is caused when the recessive allele is not expressed, while if both alleles are expressed it is called incomplete dominance.
A chromosome may contain one or two chromatids in different phases of the mitotic or meiotic cell cycle. True or false?.
Answers
Answer: A chromosome may contain one or two chromatids in different phases of the mitotic or meiotic cell cycle
(10 points) Marine biology
Match type of renewable energy to the characteristic of the ocean that makes its generation possible.
Answers
Answer:
Flat: Wind
Force: Tidal
Periodical: Wave
Superheated: Geothermal
Explanation:
This should be correct, but I will do a little research here in the minute to see if it's alright.
Renewable energy to the characteristic of the ocean that makes its generation possible are:-
Flat water surface without obstruction: Wind energyForce of moving water: Tidal energyPeriodic difference in height of water: Wave energySuperheated water at rift zone: Geothermal energyWhat is wind energy?Electrical energy obtained from harnessing the wind with windmills or wind turbines.
What is tidal energy?Tidal energy is harnessed from tides into useful forms of power, mainly electricity.
What is wave energy?It is the capture of wind waves to harness energy.
What is geothermal energy?It is heat derived within the sub-surface of the earth. Water or stream carry geothermal energy to surface.
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How many days is 0.79
Answers
Answer:
0.79 = ? 0.79% if a year = 288.35 days =288 days 8 hours and 24 minutes
Small membrane-bound sacs that move products into, out of, and within a cell are called __.
Answers
Answer:
A vesicle is a small, membrane-bound sac that transports substances in cells. The ER moves proteins and other substances within eukaryotic cells.
Explanation:
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why are some ions known as polyatomic ions?
Answers
Answer:
because a polyatomic ion is just a regular ion except it contains more then one atom
Explanation:
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Which two individuals of generation III would have a higher probability of offspring with the trait of interest, shown in black?
A.) 11 and 12
B.) 13 and 14
c.) 11 and 16
D.) 14 and 18
Answers
Answer:11 and 16 on edu
Explanation:
Answer:
C for the first question, B for the second
Explanation:
Polaris is one of the brightest stars in the sky and is the brightest star in the constellation Ursa Minor. It is very close to the northern celestial pole, and Polaris is often referred to as the Northern Star. Polaris is estimated to be approximately 46 times larger than the Sun. Why does Polaris appear to be so much smaller than the Sun to the human eye?
A) The Sun is a brigher star than Polaris.
B) The distance from Earth to Polaris is much greater than from Earth to the Sun.
C) The Sun is actually made of many different stars, giving it the appearance of being big.
D) The light from the Sun is spread out in our atmosphere, giving it the appearance of being large.
Answers
Answer:
B.
Explanation:
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Answer:
b
Explanation:
Trees that grow in a forest tend to grow very tall, with few branches. The same species of tree grown in an open area tends to grow shorter and wider, with many branches. The stimulus responsible for these different growth patterns is the amount of
wind striking the tree
⊝
light reaching the tree
⊝
nutrients in the soil
⊝
water in the ground
⊝
Which one is it?
Answers
Answer:
The correct answer is A) light reaching the tree
Explanation:
In a forest, there are lots of trees and they are all competing for sunlight so they are forced to focus all their energy on growing taller so they don't get stuck in the shadow of another tree, however, the trees that grow in a large, open area have little to no competition for sunlight, so they can relax and spread out their branches because there's lots of room.
Light, water, and nutrients play a crucial role in the adaptation and evolution of species. The trees of the same species will be taller in the forests, whereas in the open grasslands the height of the trees will be short.
The correct answer is:
Option B. Light reaching the trees
The light plays a crucial role in the height of trees as:
1. Light is essential for the survival of trees. In a forest, a large number of organisms are present, which fight for shelter, food, and light. Thus, to achieve more light, trees are taller.
2. In open grasslands, the trees are shorter and wider, because they do not have neighboring trees that fight for light and water.
Thus, the correct answer is Option B.
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