Which definition best describes polygenic traits? A. traits that are carried on linked genes B. traits that affect several features C. traits that are controlled by multiple genes D. traits that express both alleles of a gene pair
Answer:
The answer is C.Traits that are controlled by multiple genes.
Explanation:
C. traits that are controlled by multiple genes
I JUST TOOK THE TEST AND GOT IT CORRECT!
Which of the following is a primary function of carbohydrates?
Choose ONE answer:
A. Acting as a long-term energy source.
B. Speeding up chemical reactions.
C. Storing genetic information.
D. Providing short-term energy storage.
Answer: For me providing short - term energy storage is C so whatever providing short - term energy storage is on yours that's the correct answer. :D have a nice day.
Explanation: Carbohydrates are the main energy source of cells.
They provide a quick energy supply for all types of cellular activities.
The correct answer is
Providing short-term energy storage
The correct answer is option D. Providing short-term energy storage.
What Do Carbohydrates Do to Your Body?Carbohydrates are the main source of energy for your body: they help fuel your brain, kidneys, myocardium, and central nervous system. For example, fiber is a carbohydrate that aids digestion gives you a feeling of fullness, and lowers blood cholesterol levels.
Carbohydrate Function
Energy supply and blood sugar regulation.Gentle use of protein to generate energy.Degradation of fatty acids and prevention of ketosis.Biological recognition process.flavors and sweeteners.fiber.Learn more about carbohydrates here: https://brainly.com/question/336775
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Which activity does a local health department perform when providing health and environmental services?
Answer:
Explanation:
Local health department links up patient with adequate health care needed especially area where good health facilities is reduces and cannot be access, they prevent spread of disease by given immunizations.
They also help in avoiding spread of diseases and infections by working with other health agencies to create awareness.
In the environment, some of them ensure access to to good and clean water, they develop plans when emergency cases arises and during disaster.
Answer:
C
Explanation:
The local health departments make sure that the community's health is thoroughly assessed, thus, it is their role to oversee the day-to-day health issues in a country. For example, if there's an infectious disease, they prevent its spread by mandating some policies or protocols that people should follow. It is also their duty to respond to emergency situations that affect the health of the local people.
Hydroelectric power uses water to generate what?
electricity
gasoline
fossil fuels
Answer:
The answer is option A.
ElectricityHope this helps you
Answer:
A. electricity
Explanation:
Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity
have a great day
In order for translation to occur: Please choose the correct answer from the following choices, and then select the submit answer button. transcription must be occurring simultaneously. there must be large numbers of free amino acids present in the cytoplasm. the DNA must produce large numbers of free amino acids. replication must be occurring simultaneously. the nuclear membrane must first dissolve
Answer:
there must be large numbers of free amino acids present in the cytoplasm
Explanation:
In order for translation to occur, there must be a large number of free amino acids in the cytoplasm.
These free amino acids are usually carried by the transfer RNA which also carries the corresponding mRNA codon.
During translation, as the codons in the mRNA match their complements in the tRNA, the amino acid being carried by the tRNA is released and a peptide bond is formed between subsequent amino acids until the required polypeptide bond is formed.
Translation and transcription only occur simultaneously in prokaryotic cells where there is no barrier between the cell's genetic materials and the cytoplasm, unlike in eukaryotic cells where the genetic materials are housed in the membrane-bound nucleus.
what do scientist need to look at before devleping an argument
Answer:
Because they are genuis
Explanation:
Which of the following is false? Unselected Under normal conditions, blood PO2 affects breathing only indirectly. Unselected Changes in arterial pH resulting from CO2 retention or metabolic factors act through the peripheral chemoreceptors. Unselected When arterial PO2 falls below 60 mm Hg, it becomes the major stimulus for respiration. Unselected Oxygen levels are the primary stimulant of respiration.
Answer:
The sentence that says: Blood PO2 affects respiration only indirectly, IT IS FALSE, since the partial pressure of oxygen gas together with carbon dioxide are factors that DIRECTLY affect respiration.
The sentence that says: Unselected changes in arterial pH as a result of CO2 retention or metabolic factors act through peripheral chemoreceptors. It is FALSE, since the central chemoreceptors together with the peripheral ones can detect the metabolic acidosis generated by the CO2 retention, this is how the CNS receptors capture the CO2 that crosses the blood-brain barrier and stimulates hyperventilation to compensate for this phenomenon and increase the plasma concentrations of partial oxygen pressures.
The sentence that says: in selecting When arterial PO2 falls below 60 mm Hg, it becomes the main stimulus for breathing, IT IS FALSE, since it not only encourages ventilation to promote oxygenation but also activates the renin-angiotensin-aldosterone in order to recover blood volume and thus achieve adequate blood pressure.
In addition, hypovolemia triggers tachycardia and weakening symptoms, which is why the drop in blood pressure is not the main stimulus for breathing.
Explanation:
Breathing is promoted by muscle contraction, medium and high temperatures (that is, in hot or hot climates), partial concentrations of oxygen and carbon dioxide both in the atmosphere and in our blood, and in situations of systemic imbalances such as metabolic acidosis or alkalosis.
A woman consumes 500 grams of carbohydrate, 30 grams of protein, and 75 grams of fat in one day. How many total kcalories has she taken in, and how many and what percentage of kcalories are from carbohydrate, protein, and fat?
A. Total kcalories:
B. Percentage of kcalories from carbohydrate:
C. Percentage of kcalories from protein:
D. Percentage of kcalories from fat:
Answer and Explanation:
The computation is shown below:
A. For Total k. calories
= (Number of grams in carbohydrates × 1 gm of carbohydrates) + (Number of grams in protein × 1 gm of proteins) + (number of grams in fat × 1 gm in fat)
= (500 × 4) + (30 × 4) + (75 × 9)
= 2000 + 120 + 675
= 2795 k. calories
b. As we know that
1 gm of carbohydrates = 4 k. calories
So, for 500 grams it would be
= 500 × 4
= 2000 k. calories
Now the percentage is
= Total grams in carbohydrates ÷ Total kcalories
= 2000 ÷ 2795
= 0.72
= 72%
C. As we know that
1 gm of proteins = 4 k. calories
So, for 40 grams, it would be
30 × 4 = 120 k. calories
Now the percentage is
= Total grams in protein ÷ Total kcalories
= 120 ÷ 2795
= 0.043
= 4.3%
D. As we know that
1 gm of fat = 9 k. calories
So for 75 grams, it would be
75 × 4 = 200 k. calories
So, the percentage is
= Total grams in fat ÷ Total kcalories
= 200 ÷ 2795
= 0.072
= 7.2%
Assume that the point mutation and deletion mutation are not in overlapping regions of the phage genome. What phage recombinants would you expect if a crossing-over event occurred between the regions of the two mutations?
Answer:
A recombinant phage containing both mutations.
Explanation:
A recombinant organism is produced by recombination, which is a genetic phenomenon associated with the repair of double-strand breaks in DNA. In genetic research, recombinant organisms are used to investigate target gene expression. The process of DNA repair may be associated with two different pathways: homologous recombination (HR) and non-homologous end-joining (NHEJ). In this case, the recombinant phage contains no overlapping mutations (i.e., both deletion and point mutations), thereby carrying the desired genetic combination.
In which process does water move from the land to the air?
A. Percolation
B. Precipitation
C. Evaporation
D. Runoff
Answer:
option C IS THE CORRECT Evaporation is the process in which water moves from the land to the air. Evaporation of water from the land happens directly from lakes, puddles, and other surface water.
Explanation:
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plz halp xc
What is a system of classification that uses yes/no questions about the
observable physical characteristics of an organism in order to classify it?
A) dichotomous keys
B) trichotomous maps
C) unochotomous keys
D) pentachotomous maps
Which of these questions would be the MOST appropriate at a decision point on a dichotomous key?
A.) Can the animal see?
B.) Can the animal swim?
C.) How big is the animal?
D.) Does the animal have legs?
Which of these questions would be the MOST appropiate at a decision point on a dichotomous key?
A.) Can the animal run?
B.) Does the plant have flowers?
C.) What shape are the tree's leaves?
D.) How many legs does the animal have?
Answer:
ok.
Explanation:
First question: A
Second question: C
Third question: B
Hope this helped. Good luck on that test/Quiz!
Study the diagram of the geologic time scale. Which method is most likely used to identify what happened before the start of the Paleozoic era?
Hello. This question is incomplete. The full question is:
Study the diagram of the geologic time scale. Which method is most likely used to identify what happened before the start of the Paleozoic era?
a. Scientists study fossils from the Jurassic period.
b. Scientists observe index fossil records of the Mesozoic era.
c. Scientists examine fossil evidence during the Precambrian time.
d. Scientists explore the emergence of mammals and humans in the Cenozoic era.
Answer:
c. Scientists examine fossil evidence during the Precambrian time.
Explanation:
As you may already know, to facilitate the study of the geological periods of the earth, scientists, especially geologists, decided that the history of the earth should be buried in eras, periods and geological periods, so that the studies could be done in more specific and organized way.
The geological era before the Paleozoic era is the Precambrian period. During this period, there were forms of life on earth that generated fossils that allow scientists to record, date and understand this period, in addition to being able to relate it to others. Thus, the method most likely used to identify what happened before the beginning of the Paleozoic era would be to examine fossil evidence during the Precambrian period.
Answer:
c. Scientists examine fossil evidence during the Precambrian time.
Explanation:
edge 2021
List the conditions necessary to provide food for a large population.
Answer:
The necessary condition are the following:
1) One should have enough money to buy the food.
2) One should have enough crops.
3) The distribution of food must be equal.
4) The economy should be high
5) The management should be proper.
6) There should be no discrimination of people in providing food.
Answer:
The conditions necessary to provide food for a large population:
⇒ The large population should be high in economy.
⇒ The large population should have people who can afford food without any difficulties.
⇒ The large population must have plentiful of crops and farmers willing to grow them.
⇒ The area should have enough food to feed the whole population.
⇒ The food can be distributed easily to everyone in the large population.
Explain the basic steps in the first half of photosynthesis. Describe the movement of electrons and the importance of hydrogen ions in developing a proton gradient that allows for ATP production.
Answer:
This simply refers to photolysis of water.
Explanation
Generally,two steps are involved in photosynthesis.
The light dependent stage or light reaction,(which is the first part of photosynthesis,
The light independent stage (which is the second part.)
The light independent reactions involved the trapping of sunlight by the photo systems, in the leaves,and the splitting of the water molecules by sunlight.
H20 + Sunlight → 1/2H+ +2 e- +1/2 O2.
The movement of electron can be cyclic or non cyclic photophosphorylation, In Cyclic, photo system 1 absorbs the electrons and pass these to the primary pigments in the leaves. This excited the electron in chlorophyll molecule to higher energy levels , The electron emitted from the leaves is by a process called by photoactivation The emitted electron do not return to the photosystems,rather they are pick up by the primary electron acceptors and returned to the chlorophyll molecules by electron carriers,NADP.
During this process Energy is released for ATPase synthase of ATP for phosphorylation of ADP with phosphate,
In Non-cyclic photophorylation,photosystem I and II absorbs the electrons as Z-scheme movement of electrons.,Photoactivation of chlorophyll takes place as in the Cyclic.The primary electron acceptors takes the excited electrons to move along the chain of electron carriers.This makes the photosystems positively charged.
Hence to regain stability the primary pigment of photo system 1 takes electrons from photosystem II.To replace its lost electrons, P II takes electrons from the photolysis of water.ATP is generated as the carriers molecules transport electrons from the energy produced.
The hydrogen ions is used for the production of electrochemical gradients,which supplies the energy used by the ATPase synthase for the ATPs production.The process is called chemiosmosis. It involved the transports of H atoms by NADPH into the stroma,and the splitting of these into protons and electrons,The electrons form ETC,which forms the PMF.The latter pumped protons into the thylakoid membrane,and as this returns it generate the electrochemical gradient.
The ATP is used in the Calvin Cycle for CHO,proteins productions,
in what ways can nitrogen gas be broken down into nutrients for plants
Answer:
it can be done by oxidation and reduction.
Some nitrogen fixing bacterias are also responsible for converting atmospheric nitrogen into nitrates that plants can use (e.g ribozhium )
bacterias in the soil participate in nitrification as well, oxidizing ammonium ions into nitrates which plants can use.
Explanation:
Oxidation produces nitrate compounds
reduction produces ammoniacal compounds.
how does increase in temperature disturb water cycle ?
Answer: Climate change intensifies this cycle because as air temperatures increase, more water evaporates into the air. Warmer air can hold more water vapor, which can lead to more intense rainstorms, causing major problems like extreme flooding in coastal communities around the world.
Feedback inhibition prevents cells from:____________.
a. the harmful effects of enzyme activation by covalent modification of unneeded enzymes.
b. making products that are not needed by inhibiting the activity of enzymes in biosynthetic pathways allosterically.
c. irreversibly inhibiting critical enzymes.
d. destroying enzymes by proteolytic cleavage when they are needed in biosynthetic pathways.
e. accumulating unnecessary proteins.
Answer:
b. making products that are not needed by inhibiting the activity of enzymes in biosynthetic pathways allosterically.
Explanation:
The feedback inhibition is a method of cellular control were the active cellular enzymes is inhabited and it allows the cells to regulate how enzymes are needed to produce at the end. This feedback acts as a first enzyme amino acid production and is usually complete through the allosteric site. It changes the shapes and behavior of the active cell.2. Introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.
Answer:
Challenge : Competition form other species.
Success : Adaptation and colonisation.
Explanation:
Challenges like adapting to the new environment and different climatic zones and handle other potential threats like predators as snakes, birds, and others. Their potential to find food and sustain themselves will be a challenge. Success factors include their ability to adapt and develop a sense of the different environment and through genetic mutation and natural selection they can develop and grow in numbers.Explain why eating a meal with too much salt leads to production of small volume of concentrated urine.
Answer:
the urine is burned up by salt which will evaporate
Answer:
Eating a meal with too much salt leads to a decrease in the water potential of blood. This fall in water potential is detected by the osmoreceptors in the hypothalamus (in brain). The hypothalamus stimulates the pituitary gland to release antidiuretic hormone (ADH). The walls of the collecting duct in the kidney become more permeable to water, hence, a greater proportion of water is reabsorbed from the urine back into the blood by osmosis.
As a result, a small volume of concentrated urine is formed.
How are adaptations related to natural selection?
A. Adaptations increase the chances that an individual will live
longer. As a result, the individual's traits will become more
common within the population
B. Adaptations increase the chances that an individual will reproduce
and pass its genes onto the next generation. Such traits then
become more common within a population,
C. Through adaptation, organisms learn to survive in their
environment. The behavior changes their genes, and they are able
to pass the genes to their offspring. These traits then become
more common within the population
D. Through adaptation, organisms learn to survive in their
environment. They teach these behaviors to their offspring, so
these traits become more common within the population.
Answer:
Its actually A
Explanation:
(Q030) All members of the nuclear receptor family Group of answer choices are cell-surface receptors. do not undergo conformational changes. are found only in the cytoplasm. interact with signal molecules that diffuse through the plasma membrane.
Answer:
interact with signal molecules that diffuse through the plasma membrane.
Explanation:
Nuclear receptors are responsible for recognizing steroids and other molecules. They interact with signal molecules that diffuse through the plasma membrane.
What are signal molecules?Signal molecules are responsible for transmission of information. Different signaling molecules are of different size, shapes, confirmations, etc.
Its example include acetylcholine, dopamine, epinephrine, glycine, etc.
These molecules interacts with nuclear receptors and helps in signal transmission to and fro from the cell.
Thus, option d is correct.
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Areas on the moon called maria Select one: a. are seas of water. b. consist of basaltic lava. c. formed a million years ago. Clear my choice
Areas on the moon called maria consists of basaltic lava. Option B is correct.
The areas on the moon called maria are not actually seas of water, as option a suggests. Instead, they are large, dark, flat areas on the moon's surface. These areas were formed by ancient volcanic activity.
Maria are made up of basaltic lava, which is a type of lava that is low in viscosity and can flow easily. When volcanic eruptions occurred on the moon in the past, this lava flowed out onto the surface and covered large areas, creating the maria.
These volcanic eruptions and the formation of the maria took place billions of years ago, not just a million years ago as option c suggests. They are remnants of the moon's early history when volcanic activity was more prevalent.
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8. A forest is home to a large population of flies with high genetic diversity. A nearby factory
has released pollution into the forest. How can genetic diversity help the fly population survive
pollution? (4 points)
Will give brainliest
Answer:
Genetic diversity can and will allow the flies to adapt differently, and learn how to survive with the pollution in the air. There may also be different traits that help them survive the pollution.
Explanation:
If they were all the same they could be quickly killed off and may never have the chance to adapt the the changing environment around them.
Answer:
Genetic diversity can increase the chance of the fly's population to better adapted or resistant to pollution.
Explanation:
Genetic diversity refers to the variation among the genes contained in a particular species or organism.
Genetic diversity will help the fly population to survive an exposure to pollution from a factory by increasing their adaptation to the pollution. It is very likely that some of the fly population would contain allelic variation that will help them resist the effect of pollution in the forest. The surviving flies will produce off springs that will carry the set of resistant genes.
In your lab you are studying the genome of venomous rattlesnakes to find the gene which codes for their venom glands. You have two
rattlesnakes, one rattlesnake has a mutation but can still produce venom. You compare his DNA to a normal rattlesnake. What type of
mutation has occurred?
Normal: AATCGCTACGCACGTCAG
Mutated: TATCGCTACGCACGTCAG
A. Deletion Mutation
B. Nonsense mutation
C. Silent Mutation
D. Missense mutation
Which of the following membrane-enclosed organelles contains several oxidases that are involved in oxidation of fatty acids and amino acids during normal metabolism and in detoxification of chemicals like alcohol in the liver?
a) peroxisomes
b) mitochondria
c) proteasome
d) ribosomes
e) lysosomes
Answer: The correct answer is a) Peroxisomes.
Explanation: This kind of membrane enclosed organelles has a mainly function that is the oxidation, this source manages to break fatty acids and during normal metabolism, they also has many enzimes like d-aminoacid oxidases, is another of their functions. Further, the catalase enzime (another enzime which is inside peroxisomes) manages the detoxification of chemicals like alcohol from alcoholic drinks (catalases transform the H2O2, which is toxic, into H2O to detoxificate the liver).
Arrange the following steps for contraction in the correct sequence.
1. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
2. Thin filaments are pulled over the thick filaments.
3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
4. The impulse arrives at the synapse and travels through the transverse tubules.
5. The muscle fiber shortens and contracts.
6. Tropomyosin molecules bind to exposed active sites, linking actin and myosin
Answer:
Explanation:
Muscle contraction is stimulated by the movement of an action potential moving along a nerve fiber to the muscles. This event follow some series of process before being stimulated.
1. The impulse arrives at the synapse and travels through the transverse tubules.
2. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
4. Tropomyosin molecules bind to exposed active sites, linking actin and myosin.
5. Thin filaments are pulled over the thick filaments.
6. The muscle fiber shortens and contracts.
The steps with respect to the contraction should be shown in the correct way.
The impulse should arrive at the synapse & travel via the tubules of the transverse. The impulse of muscle reached to the sarcoplasmic reticulum & calcium should be released. The calcium foods should be treated as the sarcoplasm & bounded into the tropoinn molecules that left active sites.The binding of Tropomyosin molecules into the exposing of active sites, actin connected & myosin. Thin filaments should be pulled over to the filaments that are thick.The fiber of muscle should be short and contracts.
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How would a large geomagnetic storm affect communication on Earth?
Answer:
During geomagnetic storms, the ionosphere gets altered and it resulted in the distraction of the high-frequency radio communications and navigation.
Explanation:
A geomagnetic storm also popularly known by the term a solar storm refers to a transient disruption of the magnetosphere of the earth prompt by a solar wind shock wave that strikes with the magnetic field of the earth. On the surface of the Earth, a magnetic storm is characterized by a sudden decrease in the power of the Earth's magnetic field. The decline spans range about six to twelve hours and following it the magnetic field starts to restore to normal in a few days. It affects the global position system thus disrupting the communication on Earth.
Which statement is correct? Carbon dioxide diffuses from the alveoli into surrounding capillaries. In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells. Oxygen is released from the mitochondria as a product of cellular respiration. As oxygen diffuses from the lungs into capillaries, blood becomes deoxygenated. Oxygen diffuses from large blood vessels into the body's cells.
Answer:
In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells.
Explanation:
The blood contains a protein called hemoglobin. This protein has the important use of ensuring oxygen is bound to the blood for distribution to other parts of the body. The oxygen helps in the vital functioning and metabolism of the various body parts.
This explains why In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells Is the right choice.
the main and most important product to be used in photosynthesis produced by the light reaction is...
a) ATP and NADH
b) Oxygen
c) Water
d) Glucose
Hemophilia is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. Who has hemophilia in the pedigree that is shown? A)John and Ann B)Fred and Luke C)John, Charles, Jack, and Irene D)Ann and Marie
Answer:
B)Fred and Luke
Explanation:
On the pedigree, it is obvious that they suffer from hemophilia because they appear colored, but males(XY) need only one allele for hemophilia to be sufferers.
In hemophilia, it is x linked recessive disorder in males having X and Y chromosomes, so he need only one x chromosome in recessive manner, hence in pedigree analysis Fred and luke having has hemophilia, hence option b is correct
What is hemophilia?Hemophilia is a hereditary bleeding disorder in which the blood lacks to clot properly. This can occur for both spontaneous and post-injury or operative bleeding.
On the pedigree, it is observed that they suffer from hemophilia because it is x linked recessive disorder, they appear colored, but males (XY) need only one allele for hemophilia to be sufferers.
Blood contains several proteins known as coagulation factors that can assist in the prevention of bleeding. Although its rare, acquired hemophilia is a serious illness.
Therefore Fred and luke have hemophilia because males having chromosome XY, need only one allele for the disease, hence opton b is correct.
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