Given statement: Biological membranes in cells are typically composed of 2 layers of phospholipids. This statement is absolutely true.
The biological membranes in cells are generally known as plasma membranes which consist of two layers of lipids, proteins, and carbohydrates. The exterior portion of the plasma membrane is a hydrophilic, polar head whereas the interior portion consists of a hydrophobic, non-polar tail.
Some proteins are attached to the surface of the membrane [peripheral proteins] whereas some proteins are found embedded in it [integral proteins]. Carbohydrates are found to be attached to the lipids or proteins on the extracellular side of the membrane, leading to the formation of glycolipids and glycoproteins.
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What enzymatic features of DNA polymerase prevent it from replicating one of the DNA strands at the ends of linear chromosomes
Pectin is the . Group of answer choices primary organic acid found in the skin of fruit coloring compound found within the cells of fruit cementing compound between the cell walls of the fruit taste compound found under the skin of fruit
Pectin is the cementing compound between the cell walls of the fruit.
What is Pectin?Jellies, jams, and other preserves require pectin, a natural and widely available component. Jellies and jams won't gel if pectin isn't used.Pectin, a heteropolysaccharide starch, is a naturally occurring substance that gives the cell walls of fruits and vegetable structure. It gives jams and jellies their semisolid structure when they cool when coupled with acid, sugar, and other ingredients. The rinds, seeds, and membranes of citrus fruits, as well as some fruits like apples and quince, are naturally particularly rich in pectin.Citrus rinds are typically used to make commercial pectin. It can be pricey and is offered for sale as a dry powder and a liquid.To learn more about Pectin refer to:
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Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square shows a cross in which the probability that offspring will be red-eyed males is 25 percent?
A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x Upper R and x Upper R. Clockwise, from top-left, the boxes include: X Upper R X r, X Upper R Y, X Upper R Y, X Upper R X r.
A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x Upper R and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X r, Upper X r Upper Y, Upper X r Upper Y, Upper X r Upper X r.
A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x r and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X r, Upper X r Upper Y, X r Upper Y, Upper X r Upper X r.
A Punnett square is shown. The columns are labeled Upper X Upper R and UpperY. The rows are labeled x r and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X Upper R, Upper X r Upper Y, X r Upper X Upper R, Upper X r Upper X Upper R.
The genotype of the mother must be heterozygous.
Punnet' squareIn order to obtain a probability of 25% red-eyed males from the offspring, the mother must be heterozygous for the trait. The father can be of any genotype.
Thus, the likely genotype combination that will result in 25% red-eyed males are:
[tex]X^RX^r[/tex] x [tex]X^RY[/tex][tex]X^RX^r[/tex] and [tex]X^rY[/tex]When you cross the first one above, the genotype of the offspring would be [tex]X^RX^R, X^RY, X^RX^r, X^rY[/tex].
The second cross will give offspring with the genotypes [tex]X^RX^r, X^RY, X^rX^r, X^rY[/tex]
Both crosses give a 25% chance of producing re-eye males.
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Answer:The genotype of the mother must be heterozygous.
Punnet' square
In order to obtain a probability of 25% red-eyed males from the offspring, the mother must be heterozygous for the trait. The father can be of any genotype.
Thus, the likely genotype combination that will result in 25% red-eyed males are:
x
and
When you cross the first one above, the genotype of the offspring would be .
The second cross will give offspring with the genotypes
Both crosses give a 25% chance of producing re-eye males.
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Explanation:
the spinal cord is made up of
Answer:
spinal cord is made up of = 33bones called vertebrae
In order to test the implications of early emotional bonding, scientists have done testing on infant emotionality by separating animal babies from their natural mothers, allowing them to be raised by another of their same species. This testing strategy is called:
In order to test the implications of early emotional bonding, scientists have done testing on infant emotionality by separating animal babies from their natural mothers, allowing them to be raised by another of their same species. This testing strategy is called Cross fostering
Transfer of children between mothers is known as cross-fostering. This method is used to distinguish between environmental and genetic impacts on behavior. Transferring some freshly born or hatched young of species A from their mother nest to the nests of species B is the primary process of cross-fostering.A behavior can be proven to have a genetic foundation if cross-fostered offspring have a behavioral attribute that is distinct from that of their foster parents and similar to that of their biological parents. Similarly, environmental variables are proven to be dominating if the offspring exhibits qualities that are different from those of their biological parents and comparable to those of their foster parents.There is frequently a combination of the two, demonstrating both genes. This can be utilized in selective livestock breeding to combine desirable genetic traits like weight, fat distribution, or looks with ones that are influenced by the environment, like temper.learn more about Cross fostering here: https://brainly.com/question/8908083
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Which of the following is NOT a step used to perform a scientific inquiry?
c. Developing a hypothesis
a. Determining manipulated and responding
variables
b. Designing an uncontrolled experiment
d. Drawing conclusions
Please select the best answer from the choices provided
A
B
C
D
Sam is studying the interaction between porcupines, pinion pine trees, and pine bark beetles. Over the course of his study in Colorado, he observes the behaviors of 25 porcupines, records the location of 151 pinion pines, and traps 332 beetles. How many populations does his study include
Sam is studying the interaction between porcupines, pinion pine trees, and pine bark beetles. Over the course of his study in Colorado, he observes the behaviors of 25 porcupines, records the location of 151 pinion pines, and traps 332 beetles.
His study include 3 populations
Population ecology is the study of the factors influencing the number and distribution of animal and plant populations. The study of the development, control, and interactions of animal populations is known as animal population ecology. A population's growth may be significantly influenced by the behavior of its constituent individuals, and the presence of predators, prey, and competitors in the community will also have significant effects. The population is a level of organization that lies between individuals and communities, but there is no clear distinction between the phenomena that affect these levels and those of the population.Here Sam studies 25 porcupines, records the location of 151 pinion pines, and traps 332 beetles. hence 3 populations are being studied here.
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Proteins that function to catalyze biochemical reactions in the body are known as enzymes extracellular proteins essential amino acids complementing proteins
Proteins that function to catalyze biochemical reactions in the body are known as enzymes.
Proteins called enzymes aid in accelerating our bodies' chemical reactions, or metabolism. Some compounds are created, while others are broken down. Enzymes are a part of all living things. Enzymes are created by our bodies spontaneously. However, food and manufactured goods both contain enzymes.Proteins called enzymes assist our bodies' chemical reactions move forward more quickly.For several processes, including digestion and liver function, enzymes are crucial. Health issues might result from having too much or too little of a specific enzyme. Healthcare professionals can also use the enzymes in our blood to diagnose for injuries and illnesses.
Examples of a few enzymes:
Amylase is an enzyme made in the mouth.Trypsin is created in the pancreas.The stomach produces Pepsin.The pancreas produces pancreatic lipase.learn more about enzymes here: https://brainly.com/question/14577353
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Hydras and jellyfish both live in a freshwater lake that is slowly being acidified by the runoff from a chemical plant built upstream. Which population is predicted to be better able to cope with the changing environment
Answer:
Hydras
Explanation:
Algae support hydras because they provide hydras oxygen. Hydras have regenerative ability; they do not appear to die of old age, or to age at all. But sometimes, disease, predators and water contamination kill off hydras before they can achieve "immortality".
Jellyfish need to stay in the water to survive. They get their oxygen from their really thin skin. In some cases, it has been found that jellyfish have an immune system that presents bacterial-specific responses.
In the absence of an adaptive immune system, Hydra polyps employ an elaborate innate immune system to detect and interact with microbes using their two cell layers as efficient defense barriers, making them survive longer or have better defense against the chemicals.
Also take into consideration, what chemicals/acids are being put into the lake and the "age" of the hydra/jellyfish.
CD4 cells are Group of answer choices Infection-fighting white blood cells. Oxygen-carrying red blood cells. Strengthened and multiplied by HIV. Rare in African and European populations
CD4 cells are infection-fighting white blood cells.
What are CD4 cells?White blood cells called CD4 cells also referred to as T cells, are crucial components of your immune system because they combat infection. When a person has HIV, their CD4 count is used to determine how well their immune system is functioning (human immunodeficiency virus).
HIV not only attacks CD4 cells but also makes use of them to spread the infection. HIV uses the CD4 cells' capacity for viral replication to kill CD4 cells by producing more of the virus. The CD4 cells ultimately enlarge and explode as a result of this. HIV weakens the immune system by destroying CD4 cells.
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This pedigree supports the fact that widow's peak is due to a dominant allele, because if it were due to a recessive allele and both parents show the recessive phenotype, then ________.
This pedigree supports the fact that widow's peak is due to a dominant allele because if it were due to a recessive allele and both parents show the recessive phenotype, then all of the offspring would have a widow's peak.
What is the widow Peak gene?
A widow's peak is a distinctive, V-shaped hairline that tends to run in families. Despite the myths, it's probably no more significant than other genetic traits such as curly hair or a cleft chin. Some people prefer to downplay their widow's peak and some want to show it off.
The following genetic disorders are linked to the widow's peak: Arskog syndrome is a rare genetic condition that primarily affects men. Children with Aarskog syndrome have short stature in addition to deformities of the face, limbs, and genitalia.
There is a 75% likelihood that any of the offspring of parents who are heterozygous (Ww) will have a widow's peak.
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scientists sometimes conduct ___ studies on animals in which sections of their brain are surgically excised to see how it affects their behvior
Scientists sometimes conduct lesion studies on animals in which sections of their brains are surgically excised.
Lesion studies are directly related to dysfunction of the brain and also identify the defect in the brain. The manipulations in the brain can be done and their behavior can be studied. If the part of the brain is excised, it can lead to impaired movement, irritation, blurry vision, hearing loss, and also in the involuntary movement of some parts of the body. The other behavioral alterations can be memory loss and also hampers the ability to make quick decisions.
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Use the internet to find out more about kidney machines and kidney transplants . how is the donor's kidney tested to see whether it is suitable? why is rejection of the new kidney a problem and how is it dealt with?
Answer:
The kidney is tested to see whether it is suitable for donation by checking for diseases and conditions that could make it unsuitable for transplantation.
The rejection of the new kidney is a problem because it is not able to remove waste from the blood properly. The nephrons inside the kidney are not able to filter the blood properly and the waste accumulates in the body. The body then has to find a way to remove the waste and this can be done through dialysis or a transplant.
Explanation:
1. Food
2. Clean water
3. Waste management
Which of the resources above do you believe would be the most difficult to reproduce once it runs out? Why do you think this is?
Waste management would be the most difficult to reproduce once it runs out. Thus, option "C" is the answer.
What is waste management?Waste management~ includes the activities and actions required to manage waste from its inception to its final disposal. This includes the collection, transport, treatment, and disposal of waste, together with monitoring and regulation of the waste management process.
For example, Incineration is the process of burning of solid wastes. It is one of the processes of solid waste management. In this process, combustion of organic and inorganic wastes takes place that leads to the formation of ash, heat and flue gases. Ash is composed of inorganic constituents.
The heat generated during this process can be used to generate electricity. The process is carried out by Incinerators. Incinerators does not completely replace landfilling but it reduces the volume of disposal of wastes.
Thus, option "C" is the answer.
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What are Characteristics of multicellular organisms?
Answer:
DefinitionMulticellular organisms are organisms which are composed of more than one cell, with groups of cells differentiating to take on specialized functions. For example: human cells, plant cells, fungal cells (except yeast) and cells of protoctist such as plasmodium.
CharacteristicsMade of more than one cell and are complex organisms.Visible to the eye.Possess distinct organs and organ systems.They are eukaryotes (contain nucleus) cells.Their cells exhibit division of labour.Size increases with the number of cells in an organism.Fiber functions as ________ because increases the bulk of stool, it helps keep things moving through the digestive tract, and it encourages the growth of friendly bacteria in the colon and their fermentation by-products.
Fiber functions as an anti-cancer agent because increases the bulk of stool, it helps keep things moving through the digestive tract, and it encourages the growth of friendly bacteria in the colon and their fermentation by-products.
Fiber slows the charge that sugar is absorbed into the bloodstream. when you eat foods excessive in fiber, together with beans and entire grains, the sugar in the meals is absorbed slower, which keeps your blood glucose levels from rising too fast. Normalizes bowel moves.
Dietary fiber binds bile, fatty acids, and blood cholesterol together right into a large bundle of waste. Because it makes stool bulkier, fiber promotes less difficult bowel moves and allows the transport LDL cholesterol from your frame.
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A potentially fatal condition with sudden onset, characterized by uremia, that can be caused by the kidneys not receiving enough blood to filter is called
A potentially fatal condition with sudden onset, characterized by uremia, that can be caused by the kidneys not receiving enough blood to filter is called Renal artery stenosis or Acute kidney failure.
The narrowing of one or more arteries that supply blood to your kidneys is known as renal artery stenosis (renal arteries).Your kidneys can't get enough oxygen-rich blood because of artery narrowing. To assist in filtering waste materials and eliminating extra fluids, your kidneys require a sufficient blood flow. Your kidneys' decreased blood flow could harm renal tissue and raise your body's blood pressure.Clogging of the renal arteries. Your renal artery walls are susceptible to plaque buildup from fats, cholesterol, and other chemicals (atherosclerosis). Larger deposits have the potential to harden, decrease blood flow, result in kidney scarring, and ultimately restrict the artery.
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I examine all the coding sequences in Diceros bicornis (Black rhinoceros) and identify each codon that translates into threonine with the following results: 25% ACA, 25% ACC, 25% ACT, 25% ACG. This results supports the conclusion that _______________.
I examine all the coding sequences in Diceros bicornis (Black rhinoceros) and identify each codon that translates into threonine with the following results: 25% ACA, 25% ACC, 25% ACT, 25% ACG. This results supports the conclusion that there is no codon usage bias.
The term "codon use bias" describes variations in the frequency at which synonymous codons appear in coding DNA. A codon is a group of three nucleotides that codes either the end of translation or a particular amino acid residue in a polypeptide chain.The occurrence of specific codons being used more frequently than other synonymous codons during the translation of genes is known as codon use bias, and its severity varies between and within species.here, each codon translating into threonine is in equal proportion ie, 25%. 25% ACA, 25% ACC, 25% ACT, 25% ACG indicate that the codons are used in equal proportion and thus there is no codon usage bias in Diceros bicornis.learn more about codon usage bias here: https://brainly.com/question/15339928
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Male primates compete through many behaviors for access to mates and to maintain social groupings. These behaviors include:
Male primates compete through infanticide, vocalizing through territorial loud calls, forming alliances behaviors for access to mates and to maintain social groupings.
What is the main reason for sociality among primates?Protection from predators is the main motivation for social behavior. Primates are preyed upon by a variety of predators.
Like humans, many nonhuman primates also socially interact in large groups, grooming, mimicry, cooperative foraging, differentiated affiliative relationships, ritualized courtship and mating behavior, and competitive interactions governed by social dominance are just a few examples of the social behaviors that these nonhuman primates exhibit (10, 11).
Male-female couples, one-male/multiple-female groups, and solitary groups are other types of monkey social organization.
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Which phase of the menstrual cycle is characterized by the formation of new glands, thickening of the endometrium, and infiltration of blood vessels
The given events occur in the Follicular or proliferative phase of menstrual cycle.
What is proliferative phase?
1st part of the menstrual cycle occuring after menstruation.Occurs between 5-13 days of the cycleDuring this phase, the endometrium thickens due to increasing levels of estrogen from the ovarian follicles.Epithelium proliferates, there is a formation of new endometrial glands and infiltration of blood vessels.Learn more about the menstrual cycle here:
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P.H. has had a major stroke affecting her occipitotemporal pathway. When a picture of a hammer is placed in front of P.H., she is unable to identify it. How can you determin
To determine if her difficulty is in recognizing the object or in simply remembering its name, one can ask her to demonstrate the use of the object rather than identifying it.
The visual system is special because the retina of the eye houses much of the visual processing that takes place external to the brain. The retina, optic nerves, optic chiasm, optic tracts, lateral geniculate bodies, optic radiations, and visual cortex make up the visual pathway. T There are several physiological traits that the various cortical regions in the occipitotemporal circuit have in common. All regions of the pathway have populations of cells that are sensitive to the form, color, and/or texture of visual inputs, which is consistent with a role in object recognition.learn more about visual system here: https://brainly.com/question/19796591
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Where would a primary producer be located in a food chain
Another name for the evolutionary force called gene flow is Group of answer choices disruptive selection. the founder effect. admixture. transposition.
Another name for the evolutionary force called gene flow is Admixture.
What is gene flow?Gene flow or Gene migration is the introduction of genetic material (by interbreeding) from one population of a species to anotherIt changes the composition of the gene pool of the receiving population.What is admixture?Genetic admixture occurs when previously diverged or isolated genetic lineages mix. Admixture results in the introduction of new genetic lineages into a population.Learn more about gene flow here:
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Which of the following best describes habituation?
A. A change in response that stems from experience
B. An association between two events in the environment
C. An involuntary response to intermittent stimuli
D. A permanent change in behavior
Infections caused by a normally nonpathogenic organism often affecting individuals who have a decreased immune system or are elderly are:
Infections caused by a normally nonpathogenic organism often affecting individuals who have a decreased immune system or are elderly are opportunistic infections.
What is opportunistic function?
a disease-causing organism other than one that ordinarily causes infection. People with compromised immune systems are more susceptible to opportunistic infections.
What are the common opportunistic infection?Several of the most typical OIs among Americans with HIV include: Infection with the herpes simplex virus type 1 (HSV-1), a virus that can lead to mouth and lip sores. Salmonella infection is an intestinal bacterial infection.
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In which phase of a sigmoid
growth curve does the
population grow rapidly at
its maximum biotic
potential?
OA. Transitional
B. Plateau
OC. Exponential
D. Lag
The phase in which there is rapid growth at its maximum biotic potential is the exponential phase. Option C
What is the sigmoid growth curve ?The sigmoid growth curve shows the gradual rise in the population of organisms in a habitat under a defined set of conditions. There is an initial exponential growth, followed by a plateau and a lag phase.
The phase in which there is rapid growth at its maximum biotic potential is the exponential phase.
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david decided to modulate his blood glucose level by increasing fiberintake. what will be the least effective food
The least effective food would be corn flakes to modulate blood glucose level as it has the least amount of fiber.
Fiber :
Fiber is a type of carbohydrate which the body can’t digest. Although fiber cannot be converted into glucose, the sugar that results from the breakdown of most carbs, fiber travels through the body undigested. In order to control appetite and blood sugar levels, fiber helps the body consume glucose in a more controlled manner.
Constipation, diverticular disease, heart disease, diabetes, and other illnesses all seem to be at a reduced risk when fiber is consumed. In the gut microbiota, fiber has a positive role that may have anti-inflammatory effects that reduce the chronic inflammation linked to various illnesses.
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The constant turnover of body tissues requires the ______ supplied by carbohydrates, proteins, and lipids
Chemical energy
The constant turnover of body tissues requires the chemical energy supplied by carbohydrates, proteins, and lipids.
What is turnover?The definition of turnover is the equilibrium between cell proliferation and death that supports the homeostasis of cells and tissues.
How does the body get energy?Respiration is the process through which the human body produces energy by breaking down complex organic molecules like those found in carbohydrates, proteins, and fats. Energy is released during respiration in the form of ATP, which is then utilized for various metabolic processes.
Carbohydrate molecules are the main source of energy, followed by lipids. Some of the molecules' existing amino acids are used as a source of energy when all the available fats and carbs are used during respiration.
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which scentence accurately compares a tropical dry forest with a tropical rain forest?
A. A troipcal dry forest's species range over larger areas.
B. A tropical dry forest's soils contain fewer nutrients.
C. A tropical dry forest carries out more rapid nutrient cycling
D. A tropical dry forest has greater species richness
The sentence that accurately compares a tropical dry forest with a tropical rain forest is that a tropical dry forest's soils contain fewer nutrients. That is option B.
What is a tropical rain forest?A tropical rain forest is the type of forest that has high rain fall through out the year and they are located near the equator.
They are higher in nutrients when compared to the tropical dry forest.
Therefore, a tropical dry forest's soils contain fewer nutrients.
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Answer:
A. A troipcal dry forest's species range over larger areas.
A fetus develops in such a way that the type II cells of the lungs never develop, resulting in no production of surfactant in the alveoli. The fetus continues development and survives to birth. What will happen when the newborn tries to take its first breath
Due to the high surface tension, the lungs remain crushed and you will not be able to breathe first.
During fertilization, the sperm and egg combine in one of the fallopian tubes to form a zygote. The zygote then descends the fallopian tube into a morula. Upon reaching the uterus, the morula becomes a blastocyst. The blastocyst then burrows into the inner wall of the uterus. This is a process called implantation.
The prenatal development process occurs in three major stages. The first two weeks after conception are called the germination period, the third to eighth weeks are called the fetal period, and the period from the ninth week to birth is called the fetal period.
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