Answers
Answer: Here are the options.
A. Teratogens impact different genotypes differently.b.teratogens impact specific aspects of development.c.teratogen effects may not emerge until later in life.d.teratogen effects are the same regardless of the time when the individual is exposed.
The key lesson is that teratogens impact different genotypes differently or in different ways.
Explanation:
thalidomide is a tetratogen , a substance that will have a physical or functional defect on an embryo after the pregnant mother is exposed to the substance. This disturb the physical development of the child. It became popular to treat morning sickness in pregnancy but was discovered to result in major limb deformities;
Tetratogen impact different genotypes in different ways because different genotypes have different ways they respond to tetratogens because of their level exposure and subscetability. This the main reason thalidomide showed no impact when tested on prenatal rabbits but led to birth defects in prenatal humans. The genotypes of prenatal rabbits are not subscetiple to tetratogens compare to that of the developing embryo on exposure.
Related Questions
Help me pls what characteristics of life does a pregnant lady have and her baby
Answers
Considering the simulation of antibiotic resistance: briefly explain what happens to a diverse population of bacteria if they are treated repeatedly with the same antibiotic and not all of them die. What was the population's antibiotic resistance level before being exposed to the antibiotic (1 sentence)? What happened to the “good” and antibiotic-resistant bacteria when they were exposed to the antibiotic (1-3 sentences)? What was the population's antibiotic resistance level like after antibiotic treatment (1 sentence)?
Answers
Answer: A diverse population of bacteria that is treated repeatedly with the same antibiotic and not all of them die will eventually lead to the emergence of antibiotic-resistant bacteria that will thrive and become dominant. The population's antibiotic resistance level before being exposed to the antibiotic was low or non-existent. The "good" bacteria will die while the antibiotic-resistant bacteria will survive and reproduce. After antibiotic treatment, the population's antibiotic resistance level will be higher than before.
Explanation:
What is it called when a species not native to an area species that invade the ecosystem and outcompete the native species causing the native species to decline potentially to extinction?
Answers
The phenomenon where a non-native species invades an ecosystem and outcompetes the native species causing the native species to decline potentially to extinction is called "invasive species.
It occurs when non-native species, also known as invasive species, establish themselves and thrive in an ecosystem, causing harm to the native species. Invasive species possess traits that give them a competitive advantage over the native species, such as rapid reproduction, efficient resource utilization, and resistance to local predators or diseases.
The consequences of biological invasions can be severe. The invasive species can outcompete native species for resources like food, habitat, and water, leading to a decline in native populations.
They may also directly predate upon or introduce diseases to native species, further exacerbating their decline. In some cases, the native species are pushed to the brink of extinction or even driven to extinction.
Biological invasions are a significant global concern due to their ecological, economic, and social impacts. They can disrupt ecosystem functioning, alter natural habitats, reduce biodiversity, and cause economic losses in industries like agriculture, forestry, and fisheries.
Efforts are made to prevent and control invasive species through monitoring, early detection, and management strategies such as eradication, containment, and control programs to mitigate their negative effects and protect native species and ecosystems.
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The recommended dosage for Albuterol is 0.3mg/kg/day to be given P.O. (by mouth) to a child weighing 47 lbs. Available: 2mg/5ml. How much of the solution is needed for the whole day?
Answers
To calculate the amount of Albuterol solution needed for a child weighing 47 lbs (which is approximately 21.3 kg) with a recommended dosage of 0.3mg/kg/day, we can use the following formula:
Amount of Albuterol solution = Recommended dosage * Weight of the child
First, we need to calculate the recommended dosage for the child:
Recommended dosage = 0.3 mg/kg/day
Weight of the child = 21.3 kg
Recommended dosage for the child = 0.3 * 21.3 = 6.39 mg/day
Now we need to calculate the volume of the solution needed for the day:
Concentration of the solution = 2 mg/5 ml
To find out how many ml of the solution is needed, we can use the following formula:
Amount of solution (ml) = Amount of Albuterol (mg) / Concentration of the solution (mg/ml)
Amount of solution (ml) = 6.39 mg / (2 mg/5 ml)
Amount of solution (ml) = 15.975 ml
Therefore, the amount of Albuterol solution needed for the whole day is approximately 15.98 ml (rounded to two decimal places).
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A particular cell has half as much DNA as some of the other cells in a mitotically active tissue. The cell in question could be in
a. Metaphase
b. prophase
c. G1
d. G2
Answers
A G1 cell has half as much DNA as some of the other cells in a mitotically active tissue.
Why does G1 cell has half DNA ?Mitotically active tissue is tissue that is actively dividing cells, such as the root tip of a plant or a growing embryo.The cell cycle comprises two phases : - the interphase : during which the cell rests and expands - the M phase : during which cell division occurs.The DNA is copied and double the quantity of DNA than the mother cell is created during the S phase of the interphase so that the genetic material is evenly split amongst the daughter cells following the division. If a cell is mitotically active, it will undergo a continual synthesis phase after each cell division in order to furnish the daughter cell with the same quantity of DNA as the mother cell.So, if a cell in a mitotically active tissue contains half the DNA of the other cells in the tissue, the cell will be in G1, which occurs after the M phase and before the S phase, where the DNA will replicate.What are the Primary Functions of the G1 Phase?Because this is the time when a cell grows, the G1 phase is also known as the growth phase. During this phase, the cell synthesizes various enzymes and nutrients that are needed later on for DNA replication and cell division. The duration of the G1 phase is variable and it often depends on the nutrients that are available to a cell. Cells produce the most proteins during the G1 phase.Can learn more about G1 phase from https://brainly.com/question/28285760
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List one advantage of using a food chain instead of a food web
Answers
Answer:
The food chain balances the ecosystem
27. Drawing Inferences Don Huberts of Shell
Hydrogen said, "The Stone Age didn't end
because the world ran out of stones." He
was talking about the future of fossil fuels.
Write a short essay that explains what he
meant. WRITING SKILLS
Answers
Don Huberts of ShellHydrogen was referring to the fact that the world's dependency on fossil fuels will not end because we have run out of these resources.
.
Just as the Stone Age ended due to the emergence of new technologies, the world's reliance on fossil fuels will end because of the development of alternative energy sources. Huberts believes that we must find new and innovative ways to produce energy in order to reduce our dependance on non-renewable resources. This shift is already happening, with countries and companies investing in wind, solar, and other clean energy sources. Huberts' statement serves as a call to action for individuals, businesses, and governments to prioritize the development of renewable energy sources in order to reduce our impact on the environment and ensure a sustainable future. By investing in new technologies and embracing alternative energy sources, we can reduce our reliance on fossil fuels and create a better world for future generations.
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1. Which biome is thought to have the greatest variety of living things? A. Tundra B. Marine C. Grassland D. Rainforest
Answers
Answer:
B. Marine
Explanation:
There are still things we don't know the ocean
The chart below shows the primary energy production methods in two locations.
Location Energy production method
A burning of fossil fuels
B geothermal energy
If both the locations produce the same amount of energy, which of these statements best describes the difference between the two locations?
Location A experienced higher installation costs for energy than Location B.
Location B experienced higher installation costs for energy than Location A.
Location A uses a lesser amount of electricity than Location B.
Location B uses a lesser amount of electricity than Location A.
Answers
Answer: Its B
Explanation:
Location B is fossil fuels so it means that would be more expensive than geothermal energy and stuff.
In which of the following situations does the cell use active transport?
Answers
Answer: The correct option is B. Sodium ions move into the cell from areas of lower concentrations.
Explanation:
Active transport can be described as a process in which molecules move from an area of lower concentration to an area of higher concentration against the concentration gradient. Energy is required for the process of active transport to occur.In the option B, sodium ions are moving into the cell from areas which have a low concentration of sodium i.e against the concentration gradient. Hence, option B tells that the sodium ions will move inside the cell by the process of active transport.
Explanation:
Which of the following is true of shifting the hemoglobin binding curve to the left?
- Oxygen binding requires higher partial pressures.
- There is no effect of shifting the curve.
- Hemoglobin cannot be saturated.
- Oxygen binds more readily at lower partial pressures.
- Oxygen is more readily released to peripheral tissues.
Answers
Oxygen binds more readily at lower partial pressures. Hence, option D is correct.
What is the binding curve of hemoglobin?An illustration of the correlation between the quantity of oxygen bound to hemoglobin and the partial pressure of oxygen in the blood is the oxygen-hemoglobin dissociation curve. With a steep slope at low oxygen partial pressures and a more gradual slope at higher partial pressures, the curve is sigmoidal.
The statement "Oxygen binds more readily at lower partial pressures" is true of shifting the hemoglobin binding curve to the left. Hence, option D is correct.
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the phenomenon is called a revision why did it happen
Answers
Answer:
help in studying
Explanation:
At which temperature does the motion of atoms and molecules stop?
0°C
0 C
0°K
0 K
Answers
Answer:
0 K
Explanation:
0 K represents Absolute Zero, which is when all atoms and molecules would stop moving.
which roles are played by calcium ions in coordinating the activation of a muscle by motor neurons?
Answers
A. Calcium ions are released from the sarcoplasmic reticulum and bind with troponin to open actin binding sites for myosin, leading to force generation.
C. Calcium ions enter the motor neuron axon terminus to stimulate vesicle fusion and neurotransmitter release into the neuromuscular synapse.
D. Calcium ions are actively pumped into the sarcoplasmic reticulum to cause muscle relaxation by allowing tropomyosin to block actin binding sites.
Calcium diffusion inside the cytoplasm between myosin and actin filaments of the muscle fibrils end up the filaments to slide into each other, and contraction of the entire muscle fiber. They also plays an important role in signal transduction pathways, in neurotransmitter release from neurons, in contraction of all muscle cell .
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The above question is incomplete
which roles are played by calcium ions in coordinating the activation of a muscle by motor neurons?
A. Calcium ions are released from the sarcoplasmic reticulum and bind with troponin to open actin binding sites for myosin, leading to force generation.
B. Calcium ions enter the motor endplate of the muscle fiber, causing depolarization of the muscle cell.
C. Calcium ions enter the motor neuron axon terminus to stimulate vesicle fusion and neurotransmitter release into the neuromuscular synapse.
D. Calcium ions are actively pumped into the sarcoplasmic reticulum to cause muscle relaxation by allowing tropomyosin to block actin binding sites.
E. Calcium ions diffuse into the sarcoplasmic reticulum to open actin binding sites for myosin, leading to force generation.
Can someone help me with this question WILL MARK BRAINLIEST 100 POINTS!!
Answers
a.) the four potential genotypes are Ll, Ll, ll, and ll
b.) the percentage of the offspring that will have long antenna will be 50%
Which of these involves the cell membrane?
waste products leaving cells
respiration
Answers
If 622 water molecules were removed during the synthesis of a specific polysaccharide, how many monomers were joined together to make this molecule? need help please and thank you
Answers
Answer:
623 monomers
Explanation:
In a dehydration synthesis reaction, one water molecule is removed for every bond that is created between 2 monomers.
Linking 3 monomers together would remove 2 water molecules.
Following this pattern, the number of water molecules removed will always be one less than the number of monomers that were joined together.
So, if 622 water molecules were removed, then 623 monomers were joined together.
The answer is 623 monomers.
Describe the contributions of photosynthesis and cellular respiration within and among the four spheres. Discuss how carbon enters and leaves each of the four spheres and in what forms.
Answers
Photosynthesis takes the carbon dioxide and water to produce carbohydrates and oxygen, while cellular respiration uses carbohydrates and oxygen to obtain energy and has carbon dioxide and water as produce.
This means that both processes have an important role in the carbon cycle.
Carbon is found in the atmosphere as carbon dioxide, and it passes to the biosphere via photosynthesis, in the form of carbohydrates. Then carbon returns to the atmosphere via cellular respiration.
In the hydrosphere, the carbon is also found as carbon dioxide, just dissolved in the water from the atmosphere. This means that a similar process to the one between the atmosphere and biosphere occurs between the hydrosphere and biosphere.
Carbon is found in the geosphere as part of the rocks, and it passes to the atmosphere as carbon dioxide when volcanoes erupt or fossil fuels are burnt.
When organisms (biosphere) decompose, part of the carbon forms the soil, and eventually rocks (geosphere), while part is released into the atmosphere as carbon dioxide.
16.
value:
10.00 points
Which of the following defines a postzygotic isolating mechanism?
Gametes don't recognize each other, and fertilization doesn't take place.
Offspring produced are infertile, as they have a random number of chromosomes.
Individuals discard each other, as they don't have the same mating rituals.
Ο Ο
Different species have different sex organs, which aren't compatible.
©2021 McGraw-Hill Education. All ri
Answers
Answer: C, offsprings produced are infertile
Explanation: I just got it right on my test
IM GIVING YALL 5 MIN TO ANWSER
Question 14 (Essay Worth 10 points)
(04.05 HC)
Analyze the given diagram of the carbon cycle below.
An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. Arrow A points from the sun to the left tree. Arrow B points from the air above the clouds to the left tree. Arrow C points from the factory towards the air above the clouds. Arrow D points from the air to the lake labeled Carbonates in Water. Arrow E points from the label Dead Organism under the animal to label Fossils and Fossil Fuels. Arrow F points from the right tree to the air.
Part 1: Which process does arrow F represent?
Part 2: Explain how matter is conserved during the process.
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Answers
The answers include the following below:
The process F means oxygen from plant goes into the atmosphere.Matter is conserved in this process because plants take carbon dioxide from the atmosphere for photosynthesis then produces oxygen into the atmosphere and then animals feed on plants and their faeces is released into the soil for plants use which is how it is conserved.This is because absorb light energy and convert it to chemical energy and plants absorb carbon dioxide which is exhaled by humans and animals in a cyclic manner.What is Carbon cycle?This is referred to as the circulation of carbon in various forms through nature and involves various processes such as photosynthesis, respiration etc.
The process F which points from the right tree to the air means that oxygen from the plant goes into the atmosphere after the process of photosynthesis and is then used by animals.
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Which country is one of the world's largest suppliers of uranium?
A United States
B Namibia
C Egypt
D Brazil
Answers
United States is one of the world's largest suppliers of uranium.
Thus, Uranium is as prevalent in the Earth's crust as tin, tungsten, and molybdenum, and it can be found in most rocks in quantities of 2 to 4 parts per million. Seawater contains uranium, which can be extracted from the oceans.
German chemist Martin Klaproth made the discovery of uranium in the mineral pitchblende in 1789.
In supernovae, uranium is thought to have been created about 6.6 billion years ago. Although it is uncommon in the solar system, the Earth's slow radioactive decay today serves as the primary source of heat, creating convection.
Thus, United States is one of the world's largest suppliers of uranium.
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Answer:
Namibia
Explanation:
The input of cellular respiration
Answers
Answer:
The inputs, or reactants, of cellular respiration are glucose and oxygen.
Explanation:
Brainliest if this helped you please! :)
10. What is the difference between
COMPONENTS and GOALS?
Answers
Answer:
The difference between the given two topics is provided below throughout the explanation section.
Explanation:
Components:
A system that would be operationally separate is termed as a component. Everything just accomplishes certain functions and can demand a certain supply as well as create the outcome.Goals:
The major resolutions or judgments that we decide as well as resolve to fulfill, break down many negative habits, acquire better behavior or accomplish further throughout various fields.Which of the following is NOT TRUE?
Those with favorable traits are more likely to survive, reproduce, and pass on genetic information for favorable traits to future generations.
Variation is normal in all populations.
Evolution can happen over the course of several days.
Natural selection causes evolution.
Answers
Natural selection will not occur unless genetic variation has an effect on organism survival and reproduction.
What determines if a trait is a beneficial adaptation or not?The trait must first be advantageous, or improve the likelihood that the organism will survive and reproduce. In order for a trait to be passed on to an organism's progeny, it must also be heritable.
What is the mechanism by which organisms with advantageous features have a higher likelihood of surviving and procreating?An evolutionary mechanism is natural selection. Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this mechanism leads to the evolution and divergence of species.
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How is the variegated leaf trait inherited?
Answers
Answer:
Variegation is inherited only from the female parent.
Explanation:
Only the egg cell contributes cytoplasm with chloroplasts to the embryo. That’s how it got inherited.
If someone helps me with this I am giving lots of points + brainiest!
Answers
Answer:
The cold water isn't able to dissolve as much sugar as the hot water. Another name for the liquids inside the cups is a 'solution', when this solution can no longer dissolve sugar it becomes a 'saturated solution', this means that sugar starts forming on the bottom of the cup.
The reason the hot water dissolves more is because it has faster moving molecules which are spread further apart than the molecules in the cold water. With bigger gaps between the molecules in the hot water, more sugar molecules can fit in between.
We feel hot during summer and cold in winter. Give reasons.
Please give your own creative answers.
No spammers allowed.
Thank you :)
Answers
Answer:
the sun is hot and its heat spreads whereas there is not much sun in winter
Explanation:
sorry but this is all I know
How does the hardness of a rock impact their ability to erode?
Answers
Answer:
hardness of rock impact their ability to erode by when rock is harder then it will take more time than soft rock to be eroded . it will resist it's erodness till some more time it will not crack easily
What type of organisms have cells that carry out all the process is shown in the picture.
Answers
Answer:
Unicellular organisms
Where is the cell wall located?
A. inside the cell membrane
B. surrounding the nucleus
C. inside the nucleus
D. outside the cell membrane