According to the fluid-mosaic model of membrane structure:_____.
a. proteins make up the bulk of the membrane.
b. only lipids are found in the membrane.
c. cholesterol is the main constituent of the membrane.
d. glycolipids form a mosaic pattern inside the cell.
e. proteins float inside or within the phospholipid bilayer.
Answers
According to the fluid-mosaic model of membrane structure: proteins float inside or within the phospholipid bilayer. The correct answer is option (e).
According to the fluid-mosaic model of membrane structure, the cell membrane is composed of a phospholipid bilayer in which proteins are embedded. This model, proposed by Singer and Nicolson in 1972, describes the dynamic nature of the cell membrane.The phospholipid bilayer forms the basic framework of the membrane, with its hydrophilic (water-loving) heads facing outward and its hydrophobic (water-repelling) tails facing inward.
The proteins are interspersed within this bilayer, giving rise to the term "mosaic." The proteins can be either partially embedded in the membrane or span across it, forming channels and transporters. Importantly, the fluid-mosaic model emphasizes the fluidity of the membrane. The phospholipids can move laterally within the bilayer, allowing for flexibility and dynamic changes. Likewise, the proteins can also move within the membrane, floating in the phospholipid matrix. Hence , option (e) is the correct answer.
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Related Questions
1. Discuss the importance of each of the following edaphic (soil) factors to living organisms. Water, Air, Mineral nutrients
Answers
The edaphic factor includes a range of proprieties of the soil, physical, chemical, and biological that are result from biological and geological phenomena. In the case of living organisms, we have those chemical and physical properties, such as minerals and water, as well as soil aeration influence ecology and evolution of plants and in consequence, associated biota, this is because plants are the base of the food chain as well as pioneers in many cases of ecosystem structure.
Following this line of thought, we have that soil is very important, factors as simple as the consistency, very different sand from mud, impact texture and chemical composition, and in consequence the type of organisms that can settle there, we can see that in deserts (sandy soil, limited water, good nutrients), the type of plants that grow have certain characteristics, for example, they live with very few water, and in turn, they provide refuge and food for other animals in the desert, on the other hand, we have places like confers forests, where the soil is rich and water is available in the subsoil, also tend to be mountainous sites, those plants are adapted to other conditions, their roots retain soil preventing erosion, also the kind of animals that depend on them are different.
Passive transport is the movement of molecules across the cell membrane without requiring an input of cellular energy. identify which of these options are examples of passive transport.
a. do not require cellular energy to allow molecules to pass through the cell membrane.
b. do not require cellular energy because the kinetic energy of the molecules' movement will drive the movement down the concentration gradient.
c. do not require cellular energy because the molecules are small enough to fit through the membrane.
d. All of the above.
e. a and b
f. None of the above.
Answers
Answer:The correct answer is D. None of the above
Explanation:
Both prokaryotic and eukaryotic cells have a cell membrane
true or false
Answers
Answer:
false
Explanation:
as prokaryotic cells are the primitive types of cells so you do not have cell membrane
Cellular respiration is the cellular process which transfers
chemical energy from the sugar molecule glucose into what
other molecule?
a ADP
b ATP
C NADPH
d FADHA
Answers
hope this helps !
The frequency of a vibrating object is defined as
vibrations per second
period per minute
amplitude per wavelength
hertz per second
Answers
The unit of frequency is hertz (Hz)
Hope this helps. if not, I am sorry.
suggest one factor that might influence the strength of the response in the receiving cell
Answers
One factor that might influence the strength of the response in the receiving cell is the number of receptors on the cell membrane.
When a signaling molecule binds to its specific receptor, it triggers a series of intracellular events that ultimately lead to a cellular response. If there are more receptors present on the cell membrane, then there is a higher probability that the signaling molecule will bind to at least one receptor, leading to a stronger response in the receiving cell.
Conversely, if there are fewer receptors present, then there is a lower probability of binding and a weaker response. Additionally, the affinity of the receptor for the signaling molecule can also influence the strength of the response.
If the receptor has a high affinity for the signaling molecule, then even a small concentration of the signaling molecule can result in a strong response in the receiving cell.
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Please can someone help me?
Answers
Answer:
23
Explanation:
because i just learned it two weeks ago
With respect to the three fundamental particles of atoms, which particles have the
same number between two isotopes of the same element, and which ones are
different?
Answers
Answer:
Protons and electrons would stay the same, neutrons do not
Explanation:
You can't change the number of protons without changing its element. Isotopes are variations of an atom with different numbers of neutrons, so they must be different. It doesn't say that it's also an ion, so electrons probably stay the same.
In glucose,each carbon forms how many bonds, and of what type?
Answers
Question 11
Which statement best describes the relationship between inherited traits and genes?
A
An individual's inherited traits are determined by genes, which are located inside a person's chromosomes.
B
An individual's inherited traits are based on a person's environment, and the traits change over time.
С
Inherited traits are determined by a person's health and nutrition.
D
Inherited traits are determined only by a person's maternal parent
Answers
Answer: A. Genotype is inherited
Explanation: b,c are about phenotype
D, since the maternal parent is mentioned, one can assume a diploid, sexually reproducing species, in which case both parents’ genes contribute.
Through their genes, parents transmit features or qualities to their offspring, such as eye color and blood type. Thus, option A is correct.
What is relationship between the inherited traits and genes?We can pass on inherited features to the next generation since they are encoded in our DNA.
Examples include eye color, height, skin tone, and hair color. The differences that come from reproduction may be passed down through families, increasing the likelihood that entities will survive.
Dominant and recessive alleles are the two categories. A recessive allele is written with a lowercase letter, and a dominant allele is written with a capital letter.
The progeny will exhibit the dominant trait if a gene pair contains the dominant allele.
Therefore, An individual's inherited traits are determined by genes, which are located inside a person's chromosomes.
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We have 2 genes here, so we are coding for 2
different traits, AKA 2 distinct and separate
phenotypes
However, both phenotypes are present in each
offspring cat.
So, for example we could have a hairy, sink-
loving cat (like one of the parents) or a
hairless, sink-hating cat (like the other
parent). What are the other possibilities for
phenotype?
Make sure to include both traits (hair/hairless
and feelings about sinks) for each possible
phenotype.
Answers
Answer:
50% hairy and love sinks
50% hairless and hate sinks
Which of the following is a characteristic of attention deficit/hyperactivity disorder (AD/HD)?
1. has difficulty waiting for his or her turn
2. lacks facial expression
3. is unusually sensitive to light, sound, and touch
4. performs repetitive movements, such as spinning, rocking, or hand-flapping
Answers
Answer:
its the first one
Explanation: i have adhd lol
Answer:
it's answer number one owo
Explanation:
a novel enzyme is composed of 100 amino acid residues. approximately how much would a mole of this enzyme weigh?
Answers
A mole of this enzyme would weigh around 11 kilodaltons.
To calculate the approximate weight of a mole of a protein, we need to consider the molecular weight of each amino acid residue and multiply it by the number of residues in the enzyme. The average molecular weight of an amino acid residue is approximately 110 Da (Daltons).
In this case, since the enzyme is composed of 100 amino acid residues, the approximate weight of one mole of this enzyme can be calculated as follows:
Weight of one mole of the enzyme = Molecular weight of one amino acid residue * Number of amino acid residues in the enzyme
Weight of one mole of the enzyme = 110 Da * 100 residues
Weight of one mole of the enzyme ≈ 11,000 Da or 11 kDa (kilodaltons)
So, approximately, a mole of this enzyme would weigh around 11 kilodaltons.
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What is the role of the fungi and bacteria in this figure?
A.
producers
decomposers
B.
C.
consumers
D.
predators
Answers
Answer:
I think A but I might be wrong good luck
describe the effects that enzymes can have on substrates
Answers
Answer:
Enzymes bind with chemical reactants called substrates there may be one or more substrates for each type of enzyme I beleivedepending on the particular chemical reaction. In some reactions, a single-reactant substrate is broken down into multiple products the enzyme's active site binds to the substrate.
Explanation:
Hope this helps.
Answer:
When an enzyme binds its substrate, it forms an enzyme-substrate complex. This complex lowers the activation energy of the reaction and promotes its rapid progression by providing certain ions or chemical groups that actually form covalent bonds with molecules as a necessary step of the reaction process
Explanation:
hope this helps
which of the following are functions of phosphorus? a. activation of enzymes, component of cell membranes, and maintenance of fluid balance b. regulation of blood glucose, control of calcium absorption, and synthesis of vitamin d in the liver c. energy metabolism, destruction of pathogens, and transport of oxygen in the blood d. support of immune function, regulation of cell growth, and production of hormones
Answers
Functions of phosphorus (b). regulation of blood glucose, control of calcium absorption, and synthesis of vitamin d in the liver is correct option .
Phosphorus is a mineral that is necessary for the growth and repair of body structures and cells. All bodily cells, according to the University of Maryland Medical Center, contain phosphorus, which is found in bones and teeth in an amount of 85%. There, phosphorus contributes strength and structure along with calcium. In addition, phosphorus is necessary for a number of metabolic functions, including as generating energy and controlling ph.
The mineral phosphate is a prevalent form of phosphorus in the body. As parts of ATP, or adenosine triphosphate, phosphates are crucial for the synthesis of energy. Your body uses ATP to power a variety of processes. Adenosine, a chemical substance, and three phosphate molecules make up the structural components of ATP. Cellular activity is sparked when the connection between one phosphate and adenosine is broken, releasing energy. The authors of "Nutrition" claim that since the energy released from ATP is used up quickly, your body only has a small amount of it available at any given time.
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Fructose is a ketohexose monosaccharide found in honey, fruits, and other sources. It is also added to some foods and drinks as a sweetener. Much of the fructose taken in through digestion is taken up and processed by the liver, where it is phosphorylated and cleaved. Which of the following statements accurately describe(s) how fructose metabolism? Two products of the fructose 1 - phosphate pathway can enter glycolysis. The fructose 1 - phosphate gateway can deplete intracellular phosphate/ATP. Fructose enters a separate metabolic pathway from glucose, which enters the glycolytic pathway. The presence of fructose inhibits the entrance of glucose into glycolysis.
Answers
The statement that accurately describes how fructose metabolism is the one that says that the fructose 1-phosphate pathway can deplete intracellular phosphate/ATP.
Fructose metabolism is the metabolism of dietary fructose to yield energy from it. The difference between fructose metabolism and glucose is that glucose is metabolized directly throughout the body, while fructose is metabolized predominantly in the liver by the fructose 1-phosphate pathway. The phosphofructokinase reaction is bypassed and glycolysis can proceed without it.
The fructose 1-phosphate pathway is a derivative of fructose mainly generated by hepatic fructokinase. It can deplete intracellular phosphate or ATP.
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I need help!! Identify the types of inheritance based on the expression of alleles in the organism.
Answers
Answer:
multiple, recessive, dominant
Explanation:
multiple, many traits show. recessive two can show because they share. and dominant rule out the other ones so it is the only one.
Answer:
This is the answer
Explanation:
Two parents both have brown eyes but are heterozygous at a locus that determines brown vs. blue eye color (the blue eye-color phenotype is recessive). If they have four children together, calculate the probability for each of the following scenarios. [For this problem, you should show simple calculations, but you do not need to answer in full sentences.] a. None of the children have blue eyes. b. At least one of the children has blue eyes. c. The first two children have blue eyes but the second two have brown eyes. d. Two of the children have blue eyes and two have brown eyes, regardless of order.
Answers
Given that both parents have brown eyes, which means they are heterozygous at a locus that determines brown vs blue eye color. The blue eye-color phenotype is recessive.
We need to calculate the probability of the following scenarios:
a. None of the children have blue eyes. Probability of the child having brown eyes= ¾
Probability of having 4 children with brown eyes= (¾)⁴= 0.3164b. At least one of the children has blue eyes.
The probability of a child with blue eyes is ¼
Probability of having at least one child with blue eyes= 1- the probability of having no children with blue eyes= 1-0.3164= 0.6836c.
The first two children have blue eyes but the second two have brown eyes.
The possible outcome of the event= B for brown and b for blue bbBBBB. According to the event, only the first two children can have blue eyes. Probability of the first two children having blue eyes and the other two having brown eyes= (¼)²(¾)²= 0.0422d.
Two of the children have blue eyes and two have brown eyes, regardless of order. Possible outcomes of the event= B for brown and b for blueBBBBBBBb1b2b3b4
Here, 2 children out of 4 can have blue eyes. We can choose any 2 children in 4C₂ ways= 6 ways.
The probability of having 2 children with blue eyes and 2 children with brown eyes is equal to the probability of choosing any of the 6 possible outcomes.
The probability of choosing each outcome can be calculated as follows: Outcome: BBBB.
Probability of the event= (¾)⁴= 0.3164.
Outcome: BBBb1
Probability of the event= ¾ × ¾ × ¼ × ¾= 0.1406
Outcome: BBBb2
Probability of the event= ¾ × ¾ × ¾ × ¼= 0.1406.
Outcome: BBBb3
Probability of the event= ¾ × ¼ × ¾ × ¾= 0.1406
Outcome: BBBb4
Probability of the event= ¼ × ¾ × ¾ × ¾= 0.1406
Outcome: BBb1b2
Probability of the event= ¾ × ¾ × ¼ × ¼= 0.0422.
Total Probability= 6 × 0.0422= 0.2532
Therefore, the probability of two children having blue eyes and two having brown eyes, regardless of the order is 0.2532.
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No fossils have been found in the lowest sedimentary layer in the Grand Canyon. Does this mean that life did not exist on Earth when that layer of sediment formed? Explain
Answers
The Grand Canyon is home to a staggering variety of rock formations that are packed with fossils.
Explanation:
In addition to several strata of terrestrial fossils including leaf and dragonfly wing imprints, scorpion, centipede, and reptile footprints, the sedimentary rocks exposed all through the canyon are abundant with marine fossils like crinoids, brachiopods, and sponges.
Algal mats and microfossils from the Precambrian Period, which lasted from 1,200 million to 740 million years ago, to many body and trace fossils from the Paleozoic Period, which lasted from 525-270 million years ago, are all preserved in the strata of ancient rock.
What are fossils?
Fossils are the preserved remains, or signs of remains, of extinct species. The remains of the actual organism are not found in fossils! They are a rock. An organism in its entirety or simply a portion can be preserved as a fossil. Fossilized materials can include bones, shells, feathers, and leaves. Both very huge and very minute fossils exist.
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How did geography impact the Ancient Egyptians
Answers
Answer:
It affected the Nile River being their source of food, water, and transportation
Explanation:
I know this.
Answer:
Egypt's terrain influenced every aspect of Ancient Egyptian life, including the Nile River, which provided food, water, and transportation, as well as the desert, which provided natural protection.
What did you learn about the channel on Mars from the new NASA data? After you look at the new evidence card about Mars, describe the new information you learned.
Answers
Explanation:
The new research carried out by NASA on mars suggets that many of the Mars' ancient channel have been carved by flowing water, were actually formed by melt water beneath glacial ice sheets. The rocks looked familiar to the rocks found on Earth in these water channels. Moreover, conglomerate rock was found near the base of the channel on Mars.
How is carbon dioxide transported around the body
Answers
How do lipids make ATP?
Answers
A researcher is examining the dna sequences of a group of mice. He notices that in one of the mice, one nucleotide pair is substituted with another in the part of the dna sequence that codes for fur color. However, despite the substitution, the mouse still has the same fur color as the other mice with the correct dna sequence. Why does this substitution of nucleotides in the mouse not change its phenotype, or physical characteristics?.
Answers
The mouse's DNA is entirely distinct from that of the other mice. When one DNA nucleotide in a gene's protein-coding region changes without changing the order of amino acids that make up the protein that the gene codes for, the change is called a silent mutation.
What does the mouse's nucleotide substitution not do?A mutation known as a silent mutation does not affect the amino acid and hence has no effect on how the protein functions. The replacement mutation in the fur color gene was a quiet mutation, therefore it had no effect on the final phenotype.
When is a DNA-based protein generated by a cell necessary?When a cell wants to synthesize a certain protein, transcription from DNA produces messenger RNA (mRNA).
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IS NEEDED ASPA
The Median
To calculate the median, in this example, you will need the same set of numbers as above. Only this time, you are going to order the numbers from the least to the greatest. If you do this, this is what you get:
1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9
We know from the example above that there are 21 numbers in this data set. So, we will look for the middle number, which is 11. There are 10 numbers to the left and 10 numbers to the right. So, the median for this data set is the number 4.
What is the median of the following numbers?
10, 22, 27, 33, 34, 38, 41, 44, 49, 55, 61, 67, 71
38
41
44
Answers
Answer:
41 would be the median from the following numbers.
brainliest pls :,)
what is the approximate maximum population size for moose in the isle royale simulation under a normal growing season and without any wolves present on the island? while the exact number that you saw in your simulation my not be an option, select the option that comes closest to what you saw in your simulation.
Answers
The approximate maximum population size for moose in the Isle Royale simulation under a normal growing season and without any wolves present on the island is around 900. During the Isle Royale simulation, it was observed that when wolves were removed from the ecosystem, the population size of the moose increased to its carrying capacity and then experienced a decline due to starvation. Without predators, the moose population increased exponentially and consumed all of the available resources until they were depleted, which resulted in a decline in the population size.
Therefore, the approximate maximum population size for moose in the Isle Royale simulation under a normal growing season and without any wolves present on the island is around 900. This number comes close to what was observed in the simulation, as the moose population reached its carrying capacity before declining due to starvation. It is essential to maintain a balance between predators and prey to ensure the sustainability of an ecosystem and prevent the depletion of resources.
In conclusion, the absence of wolves in the Isle Royale simulation led to an exponential increase in the moose population until it reached its carrying capacity of approximately 900. However, the subsequent depletion of resources caused a decline due to starvation.
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Unicellular fungi are typically called ______________. Group of answer choices mushrooms yeast hyphae mycelium
Answers
Answer:
Your answer is yeast
Explanation:
Hope this helped :)
Answer:
Yeast
Explanation:
I hope it will help u
12345678901234567890-12345678901234567890-
Answers
The intensity of sunlight on Earth is affected by
A.) the mass of Earth
B.) the speed of Earth
C.) the number of rotations of Earth
D.) the curved surface of Earth
Answers
Answer:
The correct answer is D.) the curved surface of Earth.
Explanation:
The intensity of sunlight on Earth is affected by the curved surface of Earth, which causes the sunlight to spread out over a larger area. As a result, the intensity of sunlight is less at any given point on Earth's surface than it would be if Earth had a flat surface. This also explains why the poles receive less sunlight than the equator, as sunlight is spread out over a larger area near the poles due to the curvature of the Earth.
Factors such as the mass of Earth, the speed of Earth, and the number of rotations of Earth do not directly affect the intensity of sunlight on Earth.