The correct answer is D :)
A(n) _____ muscle action occurs when a muscle develops tension while lengthening.
Answer:
A(n) eccentric muscle action occurs when a muscle develops tension while lengthening.
Chorionic villi sampling (CVS) is a test to determine whether fetal cells have genetic abnormalities and can be performed as early as 8 weeks. Chorionic villi cells are removed using a small tube that is passed through the cervix. These cells are cultured and undergo chromosomal analysis.
Explain why chorionic villi cells will determine whether the fetus has genetic abnormalities.
Answer:
The zygote is formed by the fusion of the male and female gamete during the process of sexual reproduction. Chorionic villi sampling (CVS) is used to determine the sex of the baby and genetic abnormalities.
The fetal cells and chorionic villi has the same genome. The villib are derved from the cells known as trophoblast that are known to form the blastocyst outer layer. This provide nutrition to the embryo through the placenta. These cells first differentiate from the egg and shares the same genetic makeup. Any abnormalities in these cells shows the genetic abnormalites.
Assume that a given plasmid vector to be used in a cloning experiment contains 4000 base pairs of DNA. Assume also that the restriction endonuclease Cuj cuts this plasmid at the following sites (starting from an arbitrary zero point): 1000, 1500, and 3000. Given complete digestion of the plasmid with the endonuclease so that only linear fragments are produced, what sizes of DNA are expected?
Answer:
1000, 2000 and 3000.
Explanation:
The example given in the question is of a DNA with 4000 base pairs and it is being cut at 1000 pairs, 1500 pairs and 3000 pairs. So the lenghts of the segments that are cut from the original spiral are 1000, 500, 1500 and 1000 respectively. And the information that only the linear fragments are being produced is given to us in the question so the sizes of DNA expected would be 2000, 1000, 3000 and 2000 again respectively.
I hope this answer helps.
Complete digestion of a 4000 bp plasmid with restriction endonuclease Cuj at sites 1000, 1500, and 3000 produces four DNA fragments with sizes of 1000 bp, 500 bp, 1500 bp, and 1000 bp.
When restriction endonucleases like Cuj completely digest a plasmid with a known number of base pairs, they cut at specific sites to create linear DNA fragments of predictable sizes. For a plasmid with 4000 base pairs with cut sites at 1000, 1500, and 3000, we can calculate the sizes of the resulting DNA fragments by subtracting the positions of the cuts from each other and from the total length of the plasmid:
From 0 to 1000 = 1000 bpFrom 1000 to 1500 = 500 bpFrom 1500 to 3000 = 1500 bpFrom 3000 to 4000 (end of plasmid) = 1000 bpTherefore, we would expect to see four DNA fragments with sizes of 1000 bp, 500 bp, 1500 bp, and 1000 bp following complete digestion with Cuj.
Which process is used by animals to remove ingested foods that cannot be digested?
Final answer:
Ingestion is the process used by animals to remove ingested foods that cannot be digested. It involves taking in food through the mouth and breaking it down into smaller particles for further processing.
Explanation:
Ingestion
The large molecules found in intact food cannot pass through the cell membranes. Food needs to be broken into smaller particles so that animals can harness the nutrients and organic molecules. The first step in this process is ingestion. Ingestion is the process of taking in food through the mouth. In vertebrates, the teeth, saliva, and tongue play important roles in mastication (preparing the food into bolus).
While the food is being mechanically broken down, the enzymes in saliva begin to chemically process the food as well. The combined action of these processes modifies the food from large particles to a soft mass that can be swallowed and can travel the length of the esophagus.
Tony, age 28, reentered the hospital for high-dose chemotherapy and a bone marrow transplant for his leukemia. Bone marrow had been harvested from Tony after his first hospitalization in which he achieved complete remission. This type of bone marrow transplant is called:\
Answer: Autologous Transplant
Explanation
From the prefix AUTO, it refers to the self transplant, that is Tony gets his own stem cell. , and not from another person/ donor.
If the stem cells were from another person it is refers to as Allogeneic transplantation, that is ALLO transpant.
The inhibition of enzyme synthesis by the end product of a catabolic pathway occurs in the enzyme ____
Answer:
Answer is enzyme repression.
Explanation:
The prevention of the synthesis of enzyme as a mechanism of regulating enzyme production by repressors is known as enzyme repression.
It can also be explained a situation whereby protein molecules, which is known as the repressor , does not allow the synthesis of an enzyme.
An enzyme repressor is a protein molecule decreasing the rate of enzyme biosynthesis which negatively regulates the amount or number of enzyme.
Feedback inhibition is the process whereby the end product of a catabolic pathway inhibits an enzyme within the pathway, thus regulating the production of that product and maintaining metabolic balance.
Explanation:The inhibition of enzyme synthesis by the end product of a catabolic pathway occurs in an enzyme through a process known as feedback inhibition. This regulatory mechanism allows the cell to respond to the abundance of specific products by slowing down their production, thus ensuring that resources are not wasted in creating more of a substance than is necessary. In feedback inhibition, the end product serves as an inhibitor, which can bind to the active or allosteric site of an enzyme. If the binding occurs at the enzyme's active site, it prevents the enzyme from binding its normal substrate. Alternatively, if the inhibitor binds to the allosteric site, it changes the enzyme's shape, making the active site less available to the substrate. This method of inhibition is vital in maintaining metabolic balance within the cell.
__________ are an example of engineering controls to limit exposure to bloodborne pathogens.
Answer: Occupational safety and health administration (OSHA)
Explanation:
it is a fedral agency set aside to enforce procedures or protocols to protect employees at the risks of exposure to blood borne pathogens and other infectious materials.
OSHA sets standards for protection of employees against these pathogens,end enforce the standard to be followed.
They also ensure protection of employees in other departments .e.g induvidual in construction.
Murray is studying the effects of heredity and environment on IQ test scores. He thinks that heredity is the most important factor in determining IQ. Which finding would support his argument most strongly?
Answer:
The finding that Identical twins who are reared apart tends to have the similar IQ scores will support his argument most strongly.
Explanation:
According to the researches it has been found out that the Identical twins who are reared apart tends to have the similar IQ scores.
Here,
The twins have the same heredity i.e having the same genes and the similar environment for the birth and living.
Hence,
The finding that Identical twins who are reared apart tends to have the similar IQ scores will support his argument most strongly.
The Haloarchaea, extreme __________, are the only form of life to grow in concentrated brine.
1. thermophiles
2. psychrophiles
3. methanophiles
4. halophile
Answer:
4. halophile
Explanation:
Haloarchaea are extremophile microorganisms that require high salt concentrations to grow (up to 10%). This means that they have affinity (phile) for salt (halo).
I hope you find this information useful and interesting! Good luck!
The phenomenon of _____________ is defined as a dull or drowsy condition that can occur because of the concentration needed while driving long distances.a. velocitation b. fatigue highway c. fatigue d. none of the answers
Answer:
b. highway fatigue
Explanation:
Highway fatigue is the feeling of drowsiness that happens during long journeys when the driver hasn't taken rest periods or pauses to become alert again, this can lead to slower reaction times that can result in accidents.
I hope you find this infromation useful and interesting! Good luck!
Fatigue is a dull or drowsy condition that can occur while driving long distances. Recognizing the signs of fatigue and taking preventive measures are important for road safety.
Explanation:The phenomenon of fatigue is defined as a dull or drowsy condition that can occur because of the concentration needed while driving long distances. It is important for drivers to recognize the signs of fatigue, such as yawning, heavy eyelids, and drifting out of lanes, in order to reduce the risk of accidents. To prevent fatigue while driving, it is recommended to take regular breaks, get enough sleep before a long trip, and avoid driving during periods of low energy.
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Which statement is NOT true of acetoacetate and β‑hydroxybutyrate? They share a precursor with cholesterol synthesis. They can provide energy for brain cells. They allosterically modify other enzymes. They are produced from the acetyl CoA of fats.
Answer:
The answer is B.
Explanation:
Acetoacetate and Acetyl CoA share a precursor with cholesterol synthesis which begins with Acetyl Coa but not β‑hydroxybutyrate.
Modifying other enzymes can be said for β‑hydroxybutyrate but not Acetoacetate.
They are not both produces from Acetyl Coa of fats. β‑hydroxybutyrate is produces from the acids with fats in the liver but the same can not be said for Acetoacetate.
However they both can be said to provide energy for the brain because they are both released into the bloodstream in the event of hunger or when the body/brain needs energy in a state of fasting.
I hope this answer helps.
30 points! will mark brainliest help asap
write in your own words please
hat is your opinion? Do you think viruses should be classified as life? Why or why not? Provide your answer in a 4-5 sentence
Answer:
yes
Explanation:
Answer:
No.
Explanation:
Carrying genetic material, being able to reproduce, growing by feeding on other organisms and lacking natural characteristics which is important for an organism to be considered as life, viruses can be considered as a life form to some.Even though viruses include proteins, nucleic acids, lipids, and carbohydrates but they are saprophytic and parasitic as they have to get inside another host's body to feed on for reproducing. Without other cells, viruses wouldn't be able to reproduce and eventually die. Therefore, viruses are not living things. In my opinion, they should not be classified as life.
Matthew and Sofia are packing lunches to take to work. Which of the following lunch choices is highest in folate? 1. tuna salad on whole-wheat bread with a couple of baby carrots 2. cup of canned chicken noodle soup and an apple 3. grilled chicken and brown rice pilaf with sliced almonds 4. lentil stew with enriched pasta and spinach greens salad Request Answer Submit
Answer:
Option 4
Explanation:
Folate is vitamin B and occurs naturally in various food items such as green leafy vegetable, lentils, peas, beans, in fruits such as banana, melon, and enriched products such as bread, juices etc. Folate is essential for making up genetic material or DNA. Out of all given options, option 4 has both lentil and spinach (green leaves) which are rich source of folate. Option 1 has bread as a source of folate. Hence, the correct answer is option 4.
You are a sleep scientist working on developing a drug for people who lack the proper amount of sleep hormone. What are you looking to supplement? You are a sleep scientist working on developing a drug for people who lack the proper amount of sleep hormone. What are you looking to supplement? oxytocin melatonin serotonin prostaglandin
Answer:
melatonin
Explanation:
Oxytocin is called a peptide hormone and is normally produced in the hypothalamus, it's released by the posterior pituitary gland. It usually plays a role in social bonding, reproduction, childbirth, and the period after childbirth.
Serotonin is a monoamine neurotransmitter. It plays a vital role in feelings of well-being and happiness. it helps in mental cognition, reward, learning, memory, and numerous physiological processes.
The prostaglandins are groups of physiologically active lipid compounds called eicosanoids having diverse hormone-like effects in animals. It participate in a wide range of body functions such as the contraction and relaxation of smooth muscle, the dilation and constriction of blood vessels, control of blood pressure etc.
Melatonin is a hormone that regulates the sleep–wake cycle. It is primarily released by the pineal gland. As a supplement, it is often used for the short-term treatment of trouble sleeping.
Definitely, if the sleep scientist is working on developing a drug for people who lack proper amount of sleep hormone, He should be working on Melatonin.
A symbiotic relationship between a phage and a bacterium apparently occurs in the process of lysogeny.
a) true
b) false
Answer:
Answer is true.
Explanation:
A lysogeny is also known as the the lysogenic conversion, which can be described as the ability of the phages to integrate their DNAs into the hosts chromosomes as the process of means of surviving.
These make the phages to exist as prophages.
Remember that, symbiotic relationship is an interaction existing between two organisms, which might be either beneficial to one or both, or harmful to one of them.
Whether a fly has white or red eyes is due to alleles at a single locus. It is thus a _______ or _______ trait.
Answer:
The correct answer is "qualitative, discrete".
Explanation:
A qualitative or discrete trait is defined as a characteristic that have no intermediate features, and is often the result of genetic alleles at a single locus. For instance, if the form the seeds of pea could be either round or wrinkled, but not with intermediate forms. This is the case of the fly that has white or red eyes, but does not have pink eyes or other colors in between.
Makenzi like to study alone in a room in her school library but it's been in use the past few times she's trying to study there what should Makenzi do since she likes to sit in that particular room
Since Makenzi's preferred study room is often occupied, she should consider discovering alternative quiet study spaces or community libraries, or creating a conducive study space at home. She could also try to schedule her study times when the room is less frequented. Diverse study locations can be beneficial for cognitive encoding and memory retention.
If Makenzi prefers to study alone and the particular room in her school library is often in use, she should consider finding a secondary study location. A good study space requires a few essential elements such as a desk, a comfortable chair, appropriate lighting, and minimal distractions. Makenzi can look for other quiet areas in the library or explore different locations such as a different room at school, a community library, or a quiet café. Additionally, she might want to find out when the preferred room is less likely to be in use and plan her study schedule accordingly to maximize her chances of using it. It's also beneficial to have a home study space as a backup, in case public spaces are not available.
Experimenting with various study locations can help determine which environment enhances concentration and productivity. Whether Makenzi chooses to study at her home, a local park, or another quiet public space, the key is to find locations that support her study habits and help her achieve her educational goals. It's not necessary to always study in the same place; variation in study spaces can actually help with memory recall and retention. She should also consider discussing with her family or roommates about establishing quiet hours at home to create a conducive learning environment.
Can the gravitational force of Earth do positive or negative work on a geosynchronous communication satellite, once it is on its circular orbit?
Answer:
No, it cannot
Explanation:
The Earth's gravitational force cannot do a positive or negative work on a geosynchronous communication satellite as long as it is on its circular orbit due to the fact that the gravitation force of the Earth is always at right angle to the orbital path.
For a long time, the fact that immigrants from eastern Europe, Asia, and Latin America tended to be shorter than native-born Americans was taken as evidence that there were inherent racial differences between these populations. However, the immigrants had children who grew up to be as tall as anyone else. Geneticists now tell us that, although there can be considerable variation in height within a group due to genetics, height differences between groups are largely caused by diet. What does this demonstrate?
This showed that diet has influences on frequencies of expression of genes for height,(20-40%), although genetics control the inheritance (60-80%)
Explanation:
In another experiment, the embryologist measured the rate of synthesis of a single protein and found that the synthesis rate varied with the amount of oxygen provided to the embryos. Which of the following enzymes is LEAST likely to affect the synthesis of the protein in question?
Answer:
The correct answer is option A) "Triose Phosphate Isomerase".
Explanation:
The missing options of this question are:
A) Triose Phosphate Isomerase
B) Cytochrome C oxidase
C) ATP synthase
D) Pyruvate Dehydrogenase
And the correct answer is option A) "Triose Phosphate Isomerase".
Triose Phosphate Isomerase (TPI) is a enzyme that catalyzes the conversion of dihydroxyacetone phosphate to D-glyceraldehyde 3-phosphate. This reaction is part of the glycolytic pathway, an important process of most cells to metabolize glucose. The glycolytic pathway is performed under aerobic and anaerobic conditions, therefore it is least likely that the TPI enzyme affects the synthesis of the protein according to the amount of oxygen provided to the embryos.
What factors contribute to elderly clients being at higher risk of injury while taking antihistamines?A) Hearing lossB) Steady gaitC) Visual impairmentD) HypertensionE) Diabetes
Answer:
Option- (c), it is the best option to choose from the given options.Explanation:
Anti-histamine:To treat certain allergies and specifically the rhinitis(swelling of the mucus membrane of the nose, characterized by a runny nose and stuffiness caused by seasonal allergies or any common colds.
Effects on elderly clientsThere are factors like weak body and impairment of the immune systems in the human body.As it leads to more complications for the elderly people as the use excessive drugs. Along with that development of mucus cells are at a low rate, and swelling causes the nerves present near the nose to stop working in the proper manner or rhythm. loss of visual sense occurs due to damaged nerves in the area which is swelled up, and it give rise to even more complications.
Answer:D
Explanation:
Becos it will speed up the blood pressure and the heart beat rate. They also prevent high blood pressure drugs from working
Which produces the most energy?
A. fusing 5 kg of hydrogen.
B. passing 5 kg of water through a hydroelectric power plant.
C. burning 5 kg of gasoline.
D. fissioning 5 kg of uranium.
( The answer is fusing 5 kg of hydrogen, for anyone searching! Got it correct on Apex! )
Answer: fusing 5 kg oh hydrogen
Answer:
a. fusing 5 kg of hydrogen
Explanation:
a p e x verified x3
Cody is a member of the L.A. Crips. The other gangs in his territory are the Bloods and Satan's Slaves. Cody feels very antagonistic towards the Bloods and the Slaves. For Cody, what type of group do these two rival gangs represent?
Cody would view the Bloods and Satan's Slaves as outgroups, which are groups that evoke feelings of opposition or competition. Gangs, like those in East Los Angeles, emphasize these dynamics through territorial graffiti.
Explanation:For Cody, who is a member of the L.A. Crips, the Bloods and Satan's Slaves would represent outgroups. An outgroup is a social group toward which an individual feels competition or opposition. In the context of gang dynamics, especially in areas with contested territories such as East Los Angeles, where gangs use graffiti to mark their boundaries, the feelings of animosity are heightened due to the direct competition over resources, territory, and influence.
This antagonistic relationship often contributes to the reinforcement of in-group solidarity within the Crips, as the members unify against a common external threat. These outgroup interactions shape the social identities of the gang members and can influence behavior and attitudes.
Which of the following is regarded as a density-independent factor in the growth of natural populations? a) emigrationb) intra-specific competitionc) predationd) inter-specific competitione) flooding
Answer:
Flooding.
Explanation:
Density independent factors exert their influences on population size, and cause erratic shifts on population size. Small population generally at the risk of being wiped out by the density independent factors.
Some examples of these factor includes natural disasters (such as floods, earthquake, and tornados), fires, and pollution effects. The chances of dying of density independent factors not depends on how many individuals are presented in the population.
George plays basketball for his high school team, and he is concerned that he is not consumingenough kilocalories to support his activity. Which of the following would be the MOST likelyindicator that he is not consuming adequate kilocalories?
A) low blood glucose levels
B) weight loss
C) impaired performance on the court
D) low hemoglobin
Answer:
Weight lossExplanation:
The energy is provided to the organism through many metabolic reactions the most common of which is cellular respiration. The cellular respiration produces energy in the form of ATP molecules which is counted in by the humans in the form of calories as 1 ATP produces about 7.3 calories per mol.
The most favoured substrate of respiration is glucose which if not present is substituted by proteins and glycogen. When the body uses substrate other than the glucose than the body experiences loss in the weight.
Thus, weight loss is the correct answer.
Which essential fatty acid is rarely found to be deficient as it is typically consumed in abundance in the majority of diets?
A. Alpha-linoleic acid
B. Linoleic acid
C. Eicosapentaenoic acid
D. Docosahexanoic acid
Answer: B. Linoleic acid
Explanation:
Linoleic acid is an essential fatty acid. It is a polyunsaturated fatty acid for humans. It is a colorless or white colored oil. It is typically insoluble in water. It cannot be found deficient in the human body as humans obtain it in the form of different kind of food items like vegetable oils, seeds, eggs, meat and nuts. Thus it is abundantly consumed in the diet.
A respiratory rate of less than ________ and greater than ________ in cases of trauma are criteria for immediate transportation to a trauma center according to the CDC physiologic guidelines.
The question is incomplete as it does not have the options which are:
A. 8; 32
B. 10; 29
C. 12; 20
D. 5; 45
Answer:
The correct answer will be option-B
Explanation:
Trauma is the experience caused by the life-threatening events or events which help develop the psychological distress conditions.
The trauma can cause changes in the physiologic and psychological responses in humans. The CDC guidelines have stated criterion for immediate transportation of the person to the trauma centre in which one of the criteria is that if a person has the respiratory rate of less than 10 and greater than 29 will be transported to the trauma centre immediately.
Thus, Option-B is the correct answer.
Some human structures and their functions are listed below. In a single-celled organism such as an amoeba, all these functions can be performed by the________________.
The correct option is d.
In an amoeba, a single-celled organism, all functions such as absorption of oxygen and excretion of carbon dioxide, excretion of salts and nitrogenous wastes, and absorption of water, are performed by the cell membrane. It allows needed materials to enter and waste to exit, replicating functions of specific human structures like the alveoli, kidneys and large intestine.
Explanation:In a single-celled organism like an amoeba, all the functions mentioned (absorption of oxygen and excretion of carbon dioxide, excretion of salts and nitrogenous wastes, and absorption of water) can be performed by the cell membrane. This function is similar to that of the human structures: alveoli, kidney, and the large intestine. The cell membrane of an amoeba allows necessary materials like oxygen and water to enter the cell, and eliminates waste products such as salts, nitrogenous wastes, and carbon dioxide through a process called diffusion.
Just as the respiratory organs in humans provide oxygen and remove carbon dioxide, and kidneys excrete salts and nitrogenous wastes, the cell membrane in amoebas performs the same roles. Additionally, the amoeba does not have a specialized structure for water absorption like the human large intestine; instead, this function is also covered by the versatile cell membrane.
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The complete question is given below:
Some human structures and their functions are listed below.
alveoli- absorption of oxygen, excretion of carbon dioxidekidney- excretion of salts and nitrogenous wasteslarge intestine- absorption of waterIn a single-celled organism such as an amoeba, all these functions can be performed by the:
a. nucleus
b. ribosomes
c. mitochondria
d. cell membrane
All of the following statements are True EXCEPT 2,3-bisphosphoglycerate decreases the affinity of hemoglobin for oxygen. hemoglobin will bind more oxygen when the partial pressure is low than when the partial pressure is high. oxygen dissociates more readily from hemoglobin as pH decreases. increased partial pressure of carbon dioxide increases oxygen dissociation from hemoglobin. decreasing temperature will cause a shift to the left in the hemoglobin saturation curve.
Answer:
hemoglobin will bind more oxygen when the partial pressure is low than when the partial pressure is high.
Explanation:
Binding of hemoglobin to oxygen is regulated by several factors. However, the partial pressure of oxygen is the most important factor that determines how much oxygen will bind to hemoglobin. When the partial pressure of O2 is high, hemoglobin binds with large amounts of O2. On the other hand, when the partial pressure of O2 is low, hemoglobin is only partially saturated.
Therefore, the greater the partial pressure of oxygen, the more O2 will bind to hemoglobin until saturation is reached. This is why a lot of O2 binds to hemoglobin in pulmonary capillaries where the partial pressure of oxygen is high.
Earth’s stratosphere is above Earth’s protective atmosphere, having conditions that are dry and cold, have intense ultraviolet solar radiation, and vacuum-like air pressure. These factors make the stratosphere a great stand-in for the surface of Mars. Why would scientists want to introduce bacteria into Earth’s stratosphere?