ANSWER: Genetic make-up and Nutritional Uptake
EXPLANATION:
There are different factors that affects the body composition, which include genetic make-up, gender, age, race, nutrition, physical activity, and hormonal status.
However, the two main factors that is highly essential that determines how the body is composed is the genetic make-up and the nutritional uptake of the individuals.
Moreover, the genetic make-up (the sequence of information stored in the DNA which is used to synthesize many products and functions in the body) acts as integral factors that influence body composition.
Then, the nutritional uptake also play a pivotal influence in body composition. Therefore, Illness may be elicited by malnutrition (i.e nutritional intake falls short of nutritional requirements) which have significant effect on body composition. Hence, it can leads to major complications in the body (such as organ dysfunction, reduced body cell mass, abnormal blood composition, and other severe clinical complications).
Body composition is greatly influenced by two factors: physical activity and diet. Physical activity increases muscle mass and decreases body fat, while diet determines the amount and type of nutrients that enter the body.
Explanation:There are primarily two factors that greatly influence a person's body composition. These factors are physical activity and diet.
Physical activity affects body composition by increasing muscle mass and decreasing body fat. A higher level of physical activity usually results in a larger percentage of body mass being composed of muscle rather than fat.
On the other hand, diet influences body composition by determining the amount and type of nutrients entering the body. Foods rich in protein can help to build muscle while those high in fats and sugars contribute to fat storage.
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Watson, Detra, Fox, Ewing, Gearhart, and DeMotts (1996) administered two self-report alcoholism measures to 118 volunteers recruited from a Veterans Administration Medical Center. At approximately the same time, they asked the volunteers to complete the Diagnostic Interview Schedule. The study is an example of
Answer:
concurrent evidence of validity
Explanation:
Based on the scenario being described within the question it can be said that the study is an example of concurrent evidence of validity. This is a type of evidence that is collected in order to support the use of another specific test that predicts an outcome. This is what the researchers are doing by making the volunteers complete the Diagnostic Interview Schedule which allows them to make accurate diagnostics for their other study.
In the human retina: a) cone cells can detect color, but rod cells cannot. b) cone cells are more sensitive than rod cells to light.c) rod cells are most highly concentrated in the center of the retina. d) cone cells, but not rod cells, have a visual pigment.
Answer:
option A
Explanation:
Cones provide colour vision while rods cells do not produce colour vision. Rods provide the vision in the dull light (darkness or night), whereas cones are known to give the vision during the day or bright light; Rod cells are more sensitive to light than cone cells and both do have visual pigments with the rod cells possessing rhodopsin and the cone cells having photo-opsins.
Rods and cones are two types of photoreceptors in the human retina. Rods, mainly concentrated at the periphery of the retina, are more sensitive to light and only detect shades of gray, while cones, concentrated at the center, detect colors thanks to three types of opsins. Both have visual pigments which react to light, enabling vision.
Explanation:In the human retina, there are two types of photoreceptors: rods and cones. Rods are more sensitive than cones to light and are primarily responsible for vision in low-light conditions as well as peripheral vision. On the other hand, cone cells can detect color, differentiate between different wavelengths of light, and provide high-resolution vision. Rod cells do not detect color and only allow for the perception of shades of gray.
Rod cells are most highly concentrated around the peripheral areas of the retina, while cone cells are located near the center of the retina, in a region known as the fovea, where they are most concentrated. This central part of the retina is responsible for our central, high-resolution, color vision.
Lastly, both rod and cone cells contain visual pigments that undergo chemical changes when light falls on them. Rods contain a photosensitive pigment called rhodopsin, while cone cells contain three types of photosensitive pigments or opsins, each sensitive to different wavelengths of light - red, green, and blue. The presence of these opsins is what allows cones to detect color.
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Help please I need help
Sarah is fighting a sinus infection. Her doctor prescribed a nasal spray and an antibiotic to ght the infection. The active ingredients, in milligrams, remaining in the bloodstream from the nasal spray, n(t), and the antibiotic, a(t), are modeled in the functions below, where t is the time in hours since the medications were taken.
Answer:
The antibiotics has greater initial amount of active ingredient.
Explanation:
Okay, from the question we are given the equation for the medication formula for the Nasal spray and the antibiotics, they are given as equation (1) and (2) respectively;
n(t) = [ (t + 1) / (t + 5) ] + [18 / (t² + 8t + 15) ]. -----------------------------------------(1).
a(t) = 9 / (t+3) ----------------------------(2).
Immediately Sarah used the drug, let us say time,t = 0 is the time in which active ingredients(in milligrams) are much more concentrated in the bloodstream of Sarah.
Therefore at t =0, we are going to have;
n(0) = [ (0 + 1) / (0+ 5) ] + [18 / (0 + 8(0) + 15) ].
n(0) = (1/5 + 18/15).
n(0) = 1.4.
Also, for the antibiotics, the concentration at time,t = 0 is;
a(t) = 9 / (t+3).
a(0) = 9/ 0 + 3 = 9/3 = 3.
a(0) = 3.
The values of the Nasal spay is lesser than that of the value of the antibiotics, therefore we can come to conclusion that "The antibiotics has greater initial amount of active ingredient''.
In the human brain, a great deal of synaptic pruning occurs in early childhood. This pruning appears to be:_______.
A. The unfortunate result of insufficiently stimulating home and school environments.
B. The result of the fact that the cortex is slowly taking over responsibility for functions that have previously been controlled by other parts of the brain.
C. Due to an imbalance of important nutrients, and especially to low levels of the B vitamins in many children's diets.
D. An adaptive process that allows children to deal more efficiently with their environment.
Answer: D. An adaptive process that allows children to deal more efficiently with their environment.
Explanation:
Synaptic pruning is a natural process between early childhood and adulthood which occurs in the brain. The brain removes the extra synapses during synaptic pruning. Synapses are brain structures that allow the neurons to transmit to another neuron an electrical or chemical signal.
Synaptic pruning is thought to help the brain transition from adolescence, when it can quickly learn and make new connections, to adulthood, when it is much more stable in its structure, but can concentrate on a single question for longer and conduct more complex thinking processes. Synaptic pruning make brain more adaptive to the external environment in early ages.
Hence, the correct option is D. An adaptive process that allows children to deal more efficiently with their environment.
Final answer:
Synaptic pruning in early childhood is an adaptive process that optimizes brain efficiency by reducing unused synapses and strengthening necessary ones, in line with brain plasticity. Option D is the correct answer.
Explanation:
In early childhood, a great deal of synaptic pruning occurs in the human brain, which is an adaptive process that makes the brain more efficient. This pruning results in the loss of synapses that are unused, while strengthening the ones that are frequently used. Such synaptic pruning enables children to deal more efficiently with their environment and allows for the mastery of more complex skills. Consequently, the correct answer to the question is Option D - An adaptive process that allows children to deal more efficiently with their environment.
Neuroplasticity is critical during early childhood as it underlies learning and memory. Through both the blooming and pruning of neural connections during early development, the brain undergoes significant changes that are necessary for cognitive and functional growth. Therefore, synaptic pruning is not due to insufficiently stimulating environments, nutrient imbalances, or the cortex taking over other brain functions, but is instead a key developmental mechanism rooted in brain plasticity and the optimization of neural circuits.
If you open a can of chicken noodle soup and immediately examine it microscopically, you will find no microorganisms. If you let the open can sit on the shelf for a few weeks and then examine it, you will find lots of microorganisms. The origin of these microorganisms is most likely:
Answer:
Airborne microorganisms
Which functionality would be most affected if you lost your SA II (Ruffini) touch receptors?
A. Texture perception and pattern/form perception, like for reading Braille
B. The ability to sense cold and warmth of objects touching the skin
C. Sensitivity to finger position and downward skin pressure, as when holding an object
D. The ability to detect stable grasp and whether an object is slipping
E. The ability to feel when an object you are holding contacts another object, or a mosquito landing on your arm
Answer:
C. Sensitivity to finger position and downward skin pressure, as when holding an object
Explanation:
SA II fibers a form of the Ruffini respond particularly to lateral skin stretch and direction of object motion, they terminate in Ruffini endings connected to Aβ nerve endings.
Sensitivity to finger position and downward skin pressure, as when holding an object would be most affected if you lost your SA II (Ruffini) touch receptors.
Answer:
option C
Explanation:
Ruffini corpuscles functions primarily in sensing skin stretching, movement, and finger position. These Ruffini touch receptors also detect tension deep in the skin. the Merkel nerve ending function in Texture perception and pattern/form perception, like for reading Braille. The ability to detect stable grasp and whether an object is slipping is detected by the Meissner's corpuscles.
Fred and Joe, two unrelated, mature male gorillas, encounter one another. Fred is courting a female. Fred grunts as Joe comes near. As Joe continues to advance, Fred begins drumming (pounding his chest) and bares his teeth. Joe then rolls on the ground on his back, gets up, and quickly leaves. This behavioral pattern is repeated several times during the mating season. Choose the most specific behavior described by this example:_____
a. fixed action pattern
b. learned behavior
c. territorial behavior
d. agonistic behavior
e. social behavior
Explanation:
Animals have confrontations just like humans do. And while they certainly don't fight over who gets the last bagel at the coffee shop, they do have conflict over food resources, partners, and territorial spaceThese conflicts are often settled through agonistic behaviour, which comes from the Greek 'agon' for 'struggle.' This type of behaviour includes threatening displays and ritualistic fighting between the individuals involved in the confrontationAgonistic behaviour often looks violent but is rarely so. This is because if a true fight were to break out between the individuals, both would run a high risk of getting hurt. Therefore, it's safer for both parties to 'fight' in an exaggerated, ritualized wayIf they are involved in a conflict over a mate, a bite would quickly end the conflict for one of them. But if both snakes decide to chomp down, then everyone loses because both snakes will dieHence, the right answer is option d "Agonistic behaviour"Are salmon considered unclean ?
Answer:
it is unclean
Explanation:
fish that have non-shedding, non-overlapping, diamond-patterned, or imbedded scales should be considered unclean.
A population of lizards lives in a marsh near the ocean. Members of this population have striped tails that can be yellow, orange, or red. Most members of the population have yellow striped tails. During a storm, four lizards get swept into the ocean on driftwood and end up on an island several miles away. All four of the lizards have orange striped tails. These lizards start a new population on the island, and all members of the new population have orange striped tails. In the example above, the new lizard population had less genetic variation than the original population because of _______.
The question is incomplete as it does not have the options which are:
A. Speciation
B. the founder effect
C. natural selection
D. gene flow
Answer:
Founder effect
Explanation:
The founder effect is the phenomenon observed when the members of the population establish a new population.
This effect is observed due to the immigration and emigration of the individuals of the population.
In the given question, the four lizards swept away with the ocean and reached a new island. There they reproduced and flourished and by the time they formed the new population with orange stripes. This is the case of the genetic drift especially the founder effect in which the new alleles for the orange tail expressed.
Thus, the founder effect is the correct answer.
While doing field research, two scientists discover
a new species of plant. They take the plant back to
their lab to watch how it grows and reproduces.
Soon, the plant begins to produce a small purple
flower. Upon further investigation, the scientists
discover that the plant's seeds contain two
embryonic leaves.
Which group could the plant belong to? Check all
that apply.
bryophytes
pteridophytes
gymnosperms
angiosperms
monocots
dicots
Angiosperms, dicots
Explanation:
Angiosperms are highly differentiated vascular plants which can produce flowers and bear fruits with seeds in them. These flowering plants undergo reproduction and produces new plants. The reproductive parts like ovules and ovaries, stigma, stamen, pollen are all present in the flowers.
Angiosperms can either be a monocot or dicot. If they contain two embryonic leaves or cotyledons they are referred as dicots. Flowering angiosperms like geranium, magnolias are all dicots.
Geranium is a dicot angiosperms that produces small purple flowers.
Gymnosperms or bryophytes do not bear flowers or fruits. Monocots have only embryonic leaf.
Answer:
the answer is D- Angiosperms and F- Dicots
Explanation:
Which layer of the skin supplies the skin with oxygen and nutrients
Answer:
Reticular layer which is one of the layers of the dermis and the deeper layer which is the reticular layer supplies the skin with oxygen and nutrients
Explanation:
Front
The dermis layer is made up of two layers which are the Papillary and reticular
The deeper layer of the dermis that supplies the skin with oxygen and nutrients is the
The top of the papillary layer where it joins the epidermis is the
Back
The dermis layer is made up of two layers which are the Papillary and reticular
The deeper layer of the dermis that supplies the skin with oxygen and nutrients is the Reticular layer
The top of the papillary layer where it joins the epidermis is the Epidermal-dermal junction
E. coli can synthesize the amino acid threonine or absorb it from the environment. In the thr operon, the repressor is active when it is bound to threonine. If an E. coli bacterium is in an environment where threonine is absent, will transcription of threonine synthesis genes take place? Why or why not?
Answer:
Yes, the synthesis of threonine occurs because threonine will not be bound to the repressor, so in unbound state, the repressor will be inactive.Explanation:
1. If an E. coli bacterium is grown, in an environment where threonine is absent, transcription of threonine synthesis genes take place, because threonine will not be bound to the repressor, so the repressor will be inactive.
2. When the repressor is bound to the threonine, it becomes active, and in the absence of threonine , repressor become inactive because there is no threonine to bind with repressor.
3. So, in the absence of threonine , there is synthesis of threonine occurs.
In an environment where threonine is absent, transcription of threonine synthesis genes will take place in E. coli.
Explanation:In the third operon, the repressor is active when it is bound to threonine. If an E. coli bacterium is in an environment where threonine is absent, transcription of threonine synthesis genes will take place.
The repressor protein in the third operon actively binds to the operator to keep the genes turned off. When threonine is absent, the repressor does not bind to the operator, allowing transcription to occur. This results in the synthesis of the amino acid threonine.
Overall, the transcription of threonine synthesis genes in E. coli is dependent on the presence or absence of threonine in the environment. If threonine is absent, the genes will be transcribed and threonine will be synthesized.
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Random genetic changes to a species can result in no observable changes in the species. However, if the specific genetic change becomes great enough, a species can produce a new genetic branch. This event is called:
Answer: This event is called a genetic mutation
Explanation:
This can be explained when the genetic make up of a species is altered such that a new genetic branch is formed,a information is contained in the DNA leading to a visible change outwardly.
identify which form of energy is represented by each image
Answer:The first one is motion energy. Second is vibrational energy.Third is elastic potential energy
Explanation:
Answer:
Explanation:Elastic potential energy is the energy stored by an object when its shape and size are changed. Motion energy is a form of energy associated with a moving object. Vibrational energy is an energy that moves in the form of vibrations, or waves.
Students often get the impression that DNA must be replicated prior to protein synthesis. Explain why DNA is only replicated prior to the start of meiosis and mitosis
Answer:
Because each daughter cell must contain an equal and correct amount of genetic material (DNA)
Explanation:
Mitosis and Meiosis are both types of divisions that cells undergo. They both involve the production of new daughter cells. Each cell contains the information needed by it for its life processes. This information is stored in the genetic material known as DNA.
However, when a cell divides during mitosis and meiosis, two and four new daughter cells results respectively. These daughter cells need to contain the genetic material (DNA) that stores the genetic information needed for their survival. The cell ensures that each daughter cell that will result from the process of mitosis and meiosis contains this genetic material by undergoing a process called DNA REPLICATION before the start of the divisions (mitosis and meiosis).
DNA replication is the process of doubling or duplicating the information in the DNA. Hence, at the end of the replication process, the cell contains two copies of the genetic material (DNA) which separates into the daughter cells equally during cell division (mitosis and meiosis).
Protein synthesis does not need DNA replication as it involves using the information in the genetic material (DNA) to synthesize useful products (protein).
identified a family in which club foot was inherited as an autosomal dominant trait with reduced penetrance. They discovered a mutation in the PITXI gene that caused club foot in this family. Through DNA testing, they determined that 11 people in the family carried the PITXI mutation, but only 8 of these people had club foot. What is the penetrance of PITXI mutation in this family?
Answer:
Incomplete
Explanation:
A dominant condition has incomplete penetrance when the phenotype associated to this trait is observed in some individuals while other family members carrying the same condition do not show any sign of this trait
An example of incomplete dominance are the mutations in the BRCA1 and BRCA2 genes that have been associated with breast cancer
What do genes tell a cell to do
Answer:
Genes tell your cells to make molecules called proteins.
Explanation:
Hope this helped
:)
One alternative to autoclaving for sterilization of liquids is filtration. Imagine that you are using a filter to sterilize a drug solution. You use a filter with a 0.22 μm pore size that traps cells. Which of the following microbes will effectively be removed by this filter? Select all that apply. View Available Hint(s) Select all that apply. small viruses yeast E. coli fungi
Answer:
Yeast, fungi, and E. coli.
Explanation:
Filter with a 0.22 μm size will filter out the drug solution and remove effectively yeast, fungi and E. coli but it can not remove effectively the small viruses because the size of small viruses are in nano meter while the filter pore size is 0.22 μm.
So, virus will not remove effectively from filter while yeast size is 3 - 4 μm, fungi size is 2 - 10 μm which can remove easily.
What are water and carbon dioxide in the cellular respiration reaction?
1 they are reactants because they are present before the reaction
2 they are reactants because they are present after the reaction
3 they are product because they are present before the reaction
4 they are product because they are present after the reaction
Answer:
The answerr is option 4.
Explanation:
The equation for respiration reaction is :
glucose + oxygen -> carbon dioxide + water
Plants use the energy from the sun to convert
Answer:
Photosynthesis
Explanation:
Your statement isn't very clear, so I am unsure what you mean. Hopefully this answers your question.
Acetylcholine binds to a GPCR on heart muscle. The activated receptor stimulates a trimeric Gi protein, which opens a K channel in the plasma membrane. Following stimulation with Acetylcholine, what impact on heart rate would you expect from each of the following?
Answer:
Generates a reduction in heart rate.
Explanation:
These channels, initially called K (Ach), slow the pacemaker cell's depolarization and decrease the heart rate.
Each figure shows an example of energy changing form.
List the energy changes that take place in each example
Answer:
What figures.... Cant help you here.
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Approximately how long has the victim been dead if his body temperature was 60.0°F?
Answer:
around 8 or 9 or 10 hours.
Explanation:
Answer:
14 or 15 hours
Explanation:
The equation for approximating temperature after death is
37.5°C - 1.5°C * hours = temperature
37.5 is the standard body temperature in degrees Celsius.60°F = 15.56°C
Plug this Celsius value into our equation.37.5° - 1.5°(hours) = 15.56°C
Let's solve for hours.-1.5*hours = 15.56 - 37.5°C
-1.5*hours = -21.94°C
1.5*hours = 21.94°C
hours = 21.94°C / 1.5
hours = 14.62 == 14 or 15 hours.
Some birds are known as honey guides because they may be followed by humans to wild beehives. When the humans take honey from the hives, the birds are able to feast on the honey and bees, too. This type of relationship can best be described as ____. Question 1 options: parasitism commensalism mutualism symbiosis
Answer:mutualism
Explanation:
In a mutualistic relation,both organisms involved benefit from the activities of each other. The benefits may be nourishment,shelter, protection etc.
In the above example,the birds are known to guide humans by responding to specific calls made by the human. They guide humans to beehives and then in return gets to feed on left over honey. Both the bird and human benefits by getting nourishment.
Mutualism is unlike parasitism where one of the organism involved benefits and the other organisms Is most likely harmed. It is also not commensalism, where one organism benefits and the other neither benefits nor is harmed
Imagine that you are a research chemist who wishes to develop a chemical adhesive that will work under water. Which of the following organisms might give you a clue about where to start? Imagine that you are a research chemist who wishes to develop a chemical adhesive that will work under water. Which of the following organisms might give you a clue about where to start? a.lobsters b.sea wasps c.mussels d.trematodes
Answer:Mussels
Explanation:
The mussels are the organisms found in water which have the ability to produce amino acids which helps them in sticking their body and sticking their body to other surface.
The amino acid is a rare amino acid named as dihydroxyohenylalanine or DOPA. This amino acid is unusual which provide the ability to stick on the surface.
It enables the material to be adhesive and cohesive in nature. This organism can help the chemist to give a clue on the topic of adhesive.
The term cerebral dominance designates the hemisphere that is dominant for language. True or False
Answer:
The answer is true.
Explanation:
The brain is divided into the hemispheres, the left hemisphere and the right hemisphere. Cerebral dominance is the act of one hemisphere having the control of the functions such as which hand to use, speech etc. So the term cerebral dominance does designate the hemisphere that is dominant for language. The answer is true.
I hope this answer helps.
Answer:
The correct answer is "True".
Explanation:
Cerebral dominance is a term used to designate the hemisphere that is dominant for language. There is a functional inequality between the two hemispheres of the brain, and cerebral dominance is a concept that is related to this. Cerebral dominance refers to differences in incognitive functions, including the language and its related abilities, such as speaking, comprehending spoken language, spatial world, among others.
A chemist looking to enhance parenteral nutrition attempts to create amino acids and sugars in the lab that are produced naturally in the body. he finds that his workups consistently produce racemic mixtures of the amino acids that the body normally synthesizes and uses in only a single enantiomeric form. the most likely reason for this distinction is that:
Explanation:
The most likely reason for the given type of distinction is that the enzymes the body uses are typically stereospecific and only produce one enantiomer
Many of the enzymes used in the body are stereospecific - they will only react with one particular stereoisomer form of a molecule and will only catalyze a reaction that produces a particular isomer of the product
Often drugs are administered as a racemic mixture because work in the lab produces such a mixture even though only one of the isomers has any biological effect
What statement is true regarding the nervous and endocrine systems?
Answer:
Endocrine signaling is generally slower than neural signaling.
Explanation:
Assume that a mass of magma is constant. What effect will an increase in volume have on the density of the magma?
Answer:Magmatic density and viscosity exert fundamental controls on the eruptibility of magmas. In this study, we investigate the extent to which magmatic physical properties control the eruptibility of magmas from Iceland's Northern Volcanic Zone (NVZ). By studying subaerial flows of known age and volume, we are able to directly relate erupted volumes to magmatic physical properties, a task that has been near-impossible when dealing with submarine samples dredged from mid-ocean ridges. We find a strong correlation between magmatic density and observed erupted volumes on the NVZ. Over 85% of the total volume of erupted material lies close to a density and viscosity minimum that corresponds to the composition of basalts at the arrival of plagioclase on the liquidus. These magmas are buoyant with respect to the Icelandic upper crust. However, a number of small-volume eruptions with densities greater than typical Icelandic upper crust are also found in Iceland's neovolcanic zones. We use a simple numerical model to demonstrate that the eruption of magmas with higher densities and viscosities is facilitated by the generation of overpressure in magma chambers in the lower crust and uppermost mantle. This conclusion is in agreement with petrological constraints on the depths of crystallization under Iceland.
Explanation:
Final answer:
Increasing the volume of a mass of magma while keeping mass constant will result in a decrease in density, which is analogous to the laws governing the behavior of gases.
Explanation:
When the volume of a mass of magma increases while the mass remains constant, the density of the magma will decrease. This is because density is defined as mass per unit volume, which can be represented by the formula density = mass/volume. If the volume increases and the mass remains the same, there is more space for the same amount of mass, which results in a lower density. This concept is analogous to the behavior of gases, where increasing the volume at constant mass would similarly result in a decrease in density.
For gases, the relationships between pressure, volume, and temperature are described by the gas laws. According to Boyle’s Law, if the pressure of a gas is increased while keeping temperature constant, its volume decreases. Charles' Law states that if the volume of a gas is increased at constant pressure, the temperature also increases. According to Gay-Lussac's Law, if the volume of a gas is increased while maintaining constant temperature, the pressure decreases. Lastly, if the volume increases by adding more moles of gas at constant temperature and pressure, the volume increases in proportion to the amount of gas added.