based on the function of the extraembryonic membranes, which of the problems would likely develop if there were a deficiency in the yolk sac? based on the function of the extraembryonic membranes, which of the problems would likely develop if there were a deficiency in the yolk sac? lack of umbilical cord formation and umbilical attachment to the urinary bladder lack of blood cells for the early embryo lack of development of the embryo loss of amniotic fluid
Answers
If there were a deficiency in the yolk sac, there would likely be a lack of blood cells for the early embryo.
This is because the yolk sac plays an important role in producing blood cells during the early stages of development. Without enough blood cells, the embryo may not be able to develop properly and could potentially suffer from various health problems.
In addition, a deficiency in the yolk sac could also lead to other issues such as a loss of amniotic fluid, as this fluid is produced by the extraembryonic membranes which include the yolk sac.
The yolk sac is an important part of the extraembryonic membranes and its deficiency could have significant impacts on the development of the embryo.
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Related Questions
Learning goal 1: Which of the following are examples of predator-
prey relationships?
A bear catches and eats salmon from a river
A lion hunts and eats an antelope
Two hyenas fight over the dead remains of a zebra
Cleaner fish eat the dead skin from a shark
This food web illustrates the relationshins in a New Zeal
Answers
Answer:
lion hunts and eat an antelope
A colony of bacteria growing on a culture medium is
successfully synthesizing an organic compound.
Which procedure would be least likely to have an
effect on this synthesis?
a) adding more subunits of this organic compound
b) lowering the pH of the medium
c)raising the temperature of the colony from 20c to 30c
D)increasing the number of hormone molecules in the colony
Answers
Answer:
The correct answer is D! Hope this helps!
If both parents have type A blood what are their genotypes?
Answers
Answer:
Explanation:
Two parents with blood type A will have a baby with either A or O
what are 3 events that led to the civil war?
Answers
Answer:
Economic and social differences between the North and the South.
States versus federal rights.
The fight between Slave and Non-Slave State Proponents.
Growth of the Abolition Movement.
Dred Scott Decision.
The election of Abraham Lincoln.
Explanation:
.
the type of population growth curve that displays ever increasing growth rates followed by a leveling off to no growth is described as being the
Answers
The type of population growth curve that displays ever increasing growth rates followed by a leveling off to no growth is described as being the S-shaped curve.
An rise in the number of organisms on a certain habitat is referred to as population growth. Until there is no more room for population growth, a habitat's population will continue to grow. Graphs are a visual way to represent population growth.
The logistic growth model is shown as an S-shaped (sigmoid) curve.
In logistic growth, a population's rate of per capita growth declines as it approaches the carrying capacity, a limit imposed by the environment's limited resources. An s-shaped population growth curve indicates that the population increased gradually at first and then exponentially for a while.
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when applying the securing layer of a distal limb bandage question 34 options: apply compression from the proximal portion of the limb to the distal portion apply compression from the distal portion of the limb to the proximal portion it makes no difference in which direction compression is applied compression is not applied in the securing layer
Answers
The statement "Apply compression from the distal portion of the limb to the proximal portion; it makes no difference in which direction compression is applied" is not accurate.
When applying the securing layer of a distal limb bandage, compression should be applied from the proximal portion of the limb to the distal portion. This helps to promote venous return and prevent the pooling of blood in the distal part of the limb.
When applying a distal limb bandage, it is important to apply the securing layer with compression from the proximal portion of the limb to the distal portion. This is because compression helps to promote venous return and prevent blood pooling in the distal part of the limb. Applying compression in the opposite direction (from distal to proximal) can impede venous return and may cause swelling, which can be harmful to the limb. It is also important to apply the bandage with the correct tension and to ensure that it is evenly distributed to avoid constricting or cutting off blood flow. Proper application of a distal limb bandage is essential for promoting healing and preventing complications.
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During which phases of the cell cycle is the cell duplicating its genetic material and organelles?
Answers
The cell duplicates its genetic material during the S phase, and organelles during the G2 phase of the cell cycle.
During the G2 phase of the cell cycle, the majority of organelles duplicate. After the S phase, during which DNA or genetic material is duplicated, comes this phase. Additionally, this stage happens before mitosis, where the cell parts into two identical daughter cells.
In addition to the replication of organelles in preparation for mitosis, cell growth occurs during the G2 phase. The majority of the G2 phase, however, is spent preparing for mitosis. The cytoskeleton of the cell is taken apart to be used for the division of genetic material and organelles, and energy is also stored for cell division.
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Which form of transport requires the expenditure of energy?.
Answers
During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.
The air masses that originate in low latitude are called
a) polar b) tropical c) continental d) marine
Answers
The air masses that originate in low latitude are called b) tropical.
Air masses are large bodies of air with similar temperature and humidity characteristics. The air masses that originate in low latitudes near the equator are called tropical air masses. These air masses are typically warm and moist due to the high temperatures and abundant moisture present in tropical regions. As these air masses move away from the equator, they can influence weather patterns and climate in the regions they encounter.
Tropical air masses are important in shaping weather conditions in many parts of the world, particularly in tropical and subtropical regions. When tropical air masses interact with other air masses, such as polar air masses, it can lead to the formation of weather systems, including fronts, storms, and precipitation. Understanding the characteristics and movement of tropical air masses is essential for meteorologists and climatologists in predicting weather patterns and studying climate dynamics.
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unlike bacterial infections, populations of pathogenic viruses do not evolve resistance to antiviral drugs. State True or False your answer:
a. True
b. False
Answers
It is False that unlike bacterial infections, populations of pathogenic viruses do not evolve resistance to antiviral drugs.
In populations of immunocompromised individuals, antiviral medication resistance is an increasing issue because persistent viral replication and prolonged drug exposure favor resistant virus subtypes. Rapid diagnosis of resistance is possible by comparing specific viral mutations with drug resistance discovered by phenotypic testing.
To manage drug resistance, one must optimize host factors and medicine administration, select alternative therapies based on knowledge of the mechanisms driving resistance, and develop innovative antivirals.
Hepatitis B and drug-resistant herpesviruses are discussed in this article. In populations of immunocompromised individuals, antiviral medication resistance is an increasing issue because persistent viral replication and prolonged drug exposure favor resistant virus subtypes.
phenotypic testing's detection of resistance to particular drugs in common viral variants allows for the quick detection of resistance.
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lacI codes for a(n) ________, and when lacI is mutated, the lac operon is ________.
repressor; constitutively expressed
structural gene; never expressed
activator; never expressed
activator; constitutively expressed
repressor; never expressed
Answers
The correct option is "repressor; constitutively expressed.
"The term "lacI" codes for a repressor, and when "lacI" is mutated, the lac operon is constitutively expressed, meaning that the structural genes are always transcribed and translated. Lac operon, which regulates the metabolism of lactose in E. coli, has three structural genes that encode enzymes involved in lactose metabolism. In the presence of lactose, these genes are turned on by a molecular switch called the "inducible system."The lac operon is regulated by the interaction of a repressor protein and an inducer molecule, which is lactose in this case. The repressor is encoded by the "lacI" gene. It binds to the operator site of the lac operon and blocks RNA polymerase from transcribing the genes involved in lactose metabolism. When lactose is present, it binds to the repressor protein, causing a conformational change that prevents the protein from binding to the operator site, allowing the RNA polymerase to bind and initiate transcription.
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what factor is the primary cause of earth's decreasing biodiversity
Answers
The primary cause of Earth's decreasing biodiversity is human activities such as habitat destruction, pollution, climate change, and overexploitation of natural resources. The expansion of human population and its associated activities such as agriculture, urbanization, deforestation, and industrialization have led to the fragmentation and loss of natural habitats, resulting in the loss of species and their genetic diversity.
Pollution from industries, transportation, and waste disposal also pose a significant threat to biodiversity, affecting the health and survival of many species. Climate change caused by human-induced greenhouse gas emissions is another major factor that is altering ecosystems, causing species to shift their ranges or go extinct. Additionally, overfishing, hunting, and poaching for economic and recreational purposes are pushing many species to the brink of extinction. In summary, human activities are the primary cause of Earth's decreasing biodiversity, and addressing these issues is crucial to mitigate the loss of species and ensure a sustainable future for our planet.
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In order to safely bring the fossilized remains of a yeti down the side of a snowy mountain, they are strapped to a sled - the combination of which weighs 972 N - then carefully lowered down the 19.8∘ incline. To ensure the fossil is not damaged, it is brought down the snowy slope at a constant 1.92 m/s Although the runners of the sled are smooth, they are not free of friction; the coefficient of kinetic friction between the runners and the snow is 0.107. Assuming the rope is kept taut and parallel to the incline, what must be the tension (in newtons) in it
Answers
The tension in the rope is calculated as 33.7 N.
Weight of sled and fossil, w = 972 N Inclination angle of slope, θ = 19.8°
Speed of sled, v = 1.92 m/s
Coefficient of kinetic friction between sled runners and snow, μ = 0.107
To find:
Tension in the rope, T The forces acting on the sled are the gravitational force (Fg), the normal force (Fn) and the force of friction (Ff). The normal force is perpendicular to the slope and equal to the component of the gravitational force perpendicular to the slope. The force of friction is parallel to the slope and opposite the direction of motion.
The net force acting on the sled is given by the expression:
F net = ma
Since the sled moves with constant velocity, a = 0.
Therefore, F net = 0. F net = Fg sinθ - Ff = 0⇒ Fg sinθ = Ff
Since the speed of sled is constant, work done by tension in the rope is equal to work done by frictional force.
Hence, T = Ff = μFn
Where F n = Fg cosθ = w cosθ
Putting all the values,
T = μw cos θ sinθ= sin 19.8°cos 19.8°= 0.3365T = 0.107 × 972 × 0.3365T = 33.7 N
The rope is 33.7 N. The given problem is related to the tension in the rope. The tension in the rope is calculated as 33.7 N.
To bring down the fossil safely down the slope, the tension in the rope is 33.7 N. The gravitational force is acting perpendicular to the slope and the force of friction is acting parallel to the slope. The normal force is the component of gravitational force acting perpendicular to the slope. The sled moves down the slope with a constant velocity. The force acting on the sled is equal and opposite to the force of tension in the rope. The force of friction is given by the expression,
Ff = μFn,
where Fn = Fg cosθ = w cosθ.
Therefore, the tension in the rope is calculated as 33.7 N.
To bring down the fossil safely down the slope, the tension in the rope must be 33.7 N.
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Where do plants get the energy for photosynthesis
to take place?
Answers
The sun gives the plants nutrition, which then allows for them to photosynthesize.
Answer:
The sun.
Explanation:
During the process of photosynthesis, cells use carbon dioxide and energy from the sun to make sugar molecules and oxygen. I hope this helped!!!
when a memory is being formed several changes take place in the brain in a process called
Answers
When a memory is being formed, several changes take place in the brain in a process called "synaptic plasticity" or "long-term potentiation" (LTP).
When a memory is being formed, several changes take place in the brain in a process called memory consolidation or synaptic plasticity. This process involves the strengthening of connections between neurons in the brain, as well as the transfer of information from short-term to long-term memory storage.
Additionally, the brain may also activate certain regions involved in emotion and sensory processing to further enhance the memory's strength and significance. This process strengthens the connections between neurons, allowing for better communication and storage of information within the brain.
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what would happen if glycolsis could not happen in a cell
Answers
Answer:
The cell would die.
Explanation:
If glycolysis is interrupted, these cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die. The last step in glycolysis will not occur if pyruvate kinase, the enzyme that catalyzes the formation of pyruvate, is not available in sufficient quantities.
In the metric system, what do the kilogram, kilometer, and kilocalorie have in
common?
a. All measure the same type of quantity, and are interchangeable.
b. All are units 1000 times larger than a base unit.
c. All are units 1000 times smaller than a base unit.
d. All are units 1 million times larger than a base unit.
Answers
Answer:
yes
Explanation:
yes
In the metric system, all are units 1000 times larger than a base unit. The correct option is c.
What is a metric system?The metric system is a measurement system that employs the meter, liter, and gram as base units of length (distance), capacity (volume), and weight (mass).
The meter, gram, and liter are the three most common base units in the metric system.
This name is derived from the Greek word metron, which means "measure."
The physical standard for the meter was to be built to equal one ten-millionth of the distance between the North Pole and the Equator along the meridian running between Dunkirk, France, and Barcelona, Spain.
The kilogram, kilometer, and kilocalorie all share the property of being 1000 times larger than a base unit in the metric system.
Thus, the correct option is c.
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Which of the following is both an endocrine (secretes hormones into the blood) and exocrine (secretes substances through a duct into the GI tract) organ? Multiple Choice A. Pancreas B. GallbladderC. Small intestine D. E. Large Intestine
Answers
The pancreas is an organ that serves as both an endocrine gland and an exocrine gland. So, option A is accurate.
The pancreas is a vital organ located in the abdomen, behind the stomach. It plays a crucial role in the digestive and endocrine systems. As an exocrine gland, the pancreas produces digestive enzymes and releases them into the small intestine through a duct. These enzymes aid in the breakdown of proteins, carbohydrates, and fats from the food we consume, facilitating their absorption and digestion.
As an endocrine gland, it secretes hormones (such as insulin and glucagon) directly into the bloodstream to regulate blood sugar levels. As an exocrine gland, it releases digestive enzymes through a duct into the gastrointestinal (GI) tract to aid in the digestion and absorption of nutrients. The pancreas thus has a dual function, making it the organ that fits the description of being both endocrine and exocrine among the options provided.
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What are two pieces of evidence that support the Big Bang Theory?
1.
red shift of light and cosmic background radiation
2.
red shift of light and the different shapes of galaxies
3.
planetary motion and cosmic background radiation
4.
planetary motion and the different shapes of galaxies
Answers
Answer:
1
Explanation:
The two (2) pieces of evidence that support the Big Bang Theory are: 1. red shift of light and cosmic background radiation.
The Big Bang Theory can be defined as an explanation by astronomers to describe how the universe was formed or started. These group of astronomers posited and argued that the whole universe stretched from a single point and then expanded to the way or manner it is right now.
Basically, Georges Lemaître was the astronomer that stated the Big Bang Theory and some of the principles of the Big Bang Theory include;
The universe stretched from a single point.The universe continues to expand.According to the Big Bang Theory, cosmic background radiation is typically a radiation that permeates our universe (space). Also, a red shift of light is a phenomenon which describes how light changes as physical objects in space move across the universe.
In conclusion, the two (2) pieces of evidence that support the Big Bang Theory are:
1. Red shift of light.
2. Cosmic background radiation.
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what are the four hallmarks of successful gene delivery?
Answers
The four hallmarks of successful gene delivery are Targeting the right cells, activating the gene, integrating the gene into the cells, and avoiding harmful side effects.
Target the right cells. If you want to deliver a gene into cells of the liver, it shouldn't wind up in the big toe.
Integrate the gene in the cells. You need to ensure that the gene integrates into, or becomes part of, the host cell's genetic material, or that the gene finds another way to survive in the nucleus without being trashed.
Activate the gene. A gene must go to the cell's nucleus and be "turned on," meaning that it is transcribed and translated to make the protein product it encodes. For gene delivery to be successful, the protein must function properly.
Avoid harmful side effects. Any time you put an unfamiliar biological substance into the body, there is a risk that it will be toxic or that the body will mount an immune response against it.
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What is natural selection?
1. a process that selects variations that help with survival and that spreads the variations to more offspring
2.a process through which nature selects an individual within a population for extinction
3.a process that causes all populations to gradually increase in size
4.a process that causes random variations to appear in the offspring of every generation
Answers
Answer:
i think the answer is A
Explanation:
more likely
Answer: Answer A
a process that selects variations that help with survival and that spreads the variations to more offspring
Explanation:
A group of Right Whales are moving from the coast of Nova Scotia to the coast of Georgia. What are the Right Whales doing? A. emigrating from Georgia
B. hibernating in Georgia
C. immigrating to Georgia
D. remaining in Georgia
Answers
Answer:
it is b they are hibernating
Is heroin addictive? Is methadone addictive? Does heroin generate euphoric feelings Does methadone generate euphoric feelings Is heroin a pain-killer? Is methadone a pain-killer?
Answers
Yes, heroin is addictive. Methadone is also an addictive drug. Yes, heroin generates euphoric feelings while methadone does not generate euphoric feelings. Heroin is a pain-killer while Methadone is a synthetic opioid medication used for treating opioid dependence and pain.
What is heroin- Heroin is an opioid drug produced from morphine, a naturally occurring substance extracted from the seed pod of the Asian opium poppy plant. Heroin is typically a powder that is either white or brown. It is usually injected, snorted, or smoked. Heroin creates a “rush” of euphoria, followed by a warm flushing of the skin, dry mouth, and heaviness in the limbs. It interferes with the brain’s capacity to perceive pain.
What is methadone-Methadone is a synthetic opioid medication used for treating opioid dependence and pain. It is also used as a pain reliever. Methadone works by binding to the same brain receptors that are affected by opioids like heroin and morphine. Methadone does not produce the same “high” or euphoric effects as heroin. Instead, it works to prevent withdrawal symptoms and cravings, making it a helpful tool in addiction treatment.
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HELPPP PLEASEE!!!!!!!!!!!!!!!!!!!!!!!!
Transcribe the following DNA strand:
AAATACCCCGTAATGGCATAGGTCTGCACT
Answers
Answer:
Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). During the process of transcription, each nitrogenous base is connected with it's pair, (Guanine and Cytosine)
(Adenine and Thymine)
However one must remember that RNA contains uracil instead of Thymine. Therefore whenever there is supposed to be a "T" on the MRNA strand, there will be a "U"
AAAGTCGCTCTGAGTTGTTAT 21 Depositors primer
Explanation:
Justin is walking around an area that has few trees and many tall grasses.
In which biome is Justin most likely walking?
Answers
Answer:
grassland makes the most sense to me, but im not too sure
Answer:
Grasslands.
Explanation:
PLS HELP ME WILL MARK BRAINLIEST
In the African Savanna, there are herbivores such as gazelles and zebras that feed on the grasses. Carnivores such as lions and cheetahs, also live in the area and eat gazelles and zebras. If a disease kills most of the gazelles, which best describes what might happen to the zebra population?
The zebra population would increase because of the increased competition for grass.
The zebra population would decrease because of the decreased competition for grass.
The zebra population would decrease because of increased predation by the lions and cheetahs.
The zebra population would increase because of decreased predation by the lions and cheetahs.
Answers
The current trend of increasing global temperatures has Heather wondering how an increase in the temperature of the atmosphere affects the temperature of the ocean. Heather decides to investigate the flow of energy between the atmosphere and the hydrosphere. Which investigation will provide evidence to answer the question, How does a warmer atmosphere affect the temperature of the ocean?A. Measuring the change in the temperature of water while in containers with air of different temperaturesB. Dissolving chalk in water with varying levels of acidityC. Comparing the heat capacity of water with that of other liquidsD. Testing the water solubility of various solids, such as salt and calcium carbonate
Answers
The investigation that will provide evidence to answer Heather's question about how a warmer atmosphere affects the temperature of the ocean, is by meausuring the change in the temperature of water while in containers with air of different temperatures. This will allow her to see the influence of air temperature on water temperature.
The correct option is A.
what is a gene?
a. a section of RNA that codes for one particular person
b. the chromosomes of the human body
c. a small piece of chromosome, made of DNA
d. the instructions to make a whole organism
Answers
Answer: Im pretty sure its A
Explanation:
Wkwnejenjenwjwjw
In an analysis of the nucleotide composition of DNA, which of the following will be found in a given DNA molecule? a.) A = G and C=T b) G+ C = T +A
c) A=C d) A+ C = G + T
Answers
In an analysis of the nucleotide composition of DNA, the following statement is correct: A = C. The correct answer is (C).
Adenine (A) partners with thymine (T), and cytosine (C) pairs with guanine (G), and these base pairs in DNA are always complementary to one another. These are referred to as Chargaff's rules. As a result, in a DNA molecule, the amounts of adenine and thymine are equivalent, and the amounts of cytosine and guanine are also.
Because adenine does not pair with guanine and cytosine does not couple with thymine, option a) A = G and C = T is wrong.
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When animal cells divide, they follow a specific sequence of events. Which event happens during mitosis of an animal cell?
A. The cell divides its nucleus into two new nuclei.
B. The cell grows larger in size to prepare for duplication.
C. The cell produces structures, such as centrioles, to help with the division.
D. The cell replicates its DNA, which results in the formation of chromosomes.
Answers
Answer:
I believe the best answer would be A.) The cell divides its nucleus into two new nuclei.
Explanation:
Mitosis is part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes.
I hope this helps you! :)