Answer:
The result of non-disjunction of chromosomes during meiosis, producing three copies of the chromosome in the embryos -instead of two- is called trisomy.
Explanation:
With reference to genetics, a cell is diploid because it has an even number of chromosomes, distributed in pairs - each of which is contributed by a parent - and responds to the formula 2n.
In trisomy, non-disjunction during meiosis of the homologous chromosomes causes an overloadin the corresponding gamete, which during fertilization will originate an embryo whose formula is 2n+1.
Trisomias are considered mutations, which can physically and functionally affect an individual, or even make an embryo not viable. This defect can occur in both autosomes and sex chromosomes.
A very common example of this mutation corresponds to the trisomy of chromosm 21, known as Down syndrome.
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Answer:
the correct answer is trisomy
Explanation:
i got it right on usatestprep
conditions affecting the earth's weather
Answer:
the four main ones are solar radiation, the amount of which changes with Earth's tilt, orbital distance from the sun and latitude, temperature, air pressure and the abundance of water.
Explanation:
Answer: Temperature
Air pressure
Humidity
Explanation: The temperature of the air causes differences in weather condition. The warmer air causes low pressure and high humidity which contributes to a bad weather. Lower air temperature causes high pressure and low humidity making clear skies and fine weather.
The most common compound on earth is:
water
nitrogen
phosphorus
oxygen
Answer:
Water
Explanation:
A compound means a substance (something) that is made of 2 or more elements.
Elements are the substances found on the periodic table. If you can find something on the periodic table, it cannot be a compound.
Nitrogen is "N" (7th square).
Phosphorus is "P" (15th square).
Oxygen is "O" (8th square).
The compound "water" is H₂O. It uses the elements "H" (hydrogen) and "O" (oxygen).
Since water is the only compound in those choices, the answer has to be water.
Other facts!
The Earth's surface has mostly water. About two-thirds (2/3) of Earth's surface is water.
The Earth's atmosphere is mostly Nitrogen (78%).
We breathe oxygen (which is O₂).
Answer: water
Explanation: A compound is a substance which contains more than one element chemically combined together in a fixed proportion. Nitrogen (N), phosphorus (P) and oxygen (O) are elements while water is a compound. Water has a chemical formula of H2O, containing two elements hydrogen and oxygen.
A __________ is an organic molecule that consists of C, H, O atoms in a ratio of 1:2:1.
Answer:
Molecule
Explanation:
Molecule 34
A carbohydrate is an organic molecule consisting of C, H, and O atoms in a 1:2:1 ratio, important for human biochemistry and found in various forms from simple sugars to complex polysaccharides.
Explanation:An organic molecule that consists of carbon (C), hydrogen (H), and oxygen (O) atoms in a 1:2:1 ratio is known as a carbohydrate. Carbohydrates are essential biomolecules that come in various forms, such as sugars, starches, and fibers.
They have a general stoichiometric formula of (CH₂O)ₙ, where 'n' represents the number of carbon atoms in the molecule.
These organic compounds are a significant part of human biochemistry, consisting of carbon and hydrogen, and are essential for our diet and bodily functions.
Simple carbohydrates include monosaccharides like glucose and fructose, while complex carbohydrates include polysaccharides such as starch and cellulose.
The carbon skeleton of a carbohydrate provides a backbone to which other functional groups are bound, making them versatile in structure and function within living organisms.
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What ecological conditions caused the similarities in the body plan of these animals?
Answer:
i don't really know the condition but I think as animals Begin to migrate from one place to the other either by wind flooding and others the tend to adapt to the new environment where by somy features in them changes in other to adapt to the new area
The different species of dinosaurs have evolved through time due to changes in the climatic conditions. And, two species which have evolved from same ancestor show more similarity than two individuals which have evolved from different ancestors.
What is Evolution?Evolution can be defined as the change in heritable characteristics of different populations over the period of successive generations.
The available evidence show that severe changes in the environmental conditions such as the intense volcanic eruptions and rapid climate change supported evolution of the species.
Homologous structures which have evolved from the same ancestor but these structures show certain level of difference due to changes in the habitats. These organisms which evolved from same ancestor show more similarity than the organisms which evolve from different ancestors.
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A model that helps explain the results of Mendel’s crosses is called a ______.
Answer : A model that helps explain the results of Mendel's crosses is called a (Punnett square).
Can someone please write a 250-word essay about one of these systems
Digestive system
Respiratory system
Muscular and skeletal systems
Nervous system
Endocrine system
Reproductive system
Excretory system
Immune and lymph systems
Cardiovascular system
Muscular and skeletal systems:
Muscular systems:
Muscular systems are systems that involves three major muscles in its system which are described below,
Skeletal muscleCardiac muscleSmooth muscleThe functions of these three muscles are together makes the muscular system.
Skeletal muscle:
The skeletal muscles are like other striated muscles which are majorly composed of muscle fibers containing the myofibrils, which are majorly composed of sarcomeres.They are majorly involved in supporting the bones and the movement of human body.There are around 639 skeletal muscles in the entire body of a human being.Cardiac muscle:
Cardiac muscle are involuntary muscles that are found near the heart. They are controlled by the sinus node.Smooth muscle:
Smooth muscle are muscle that are found around the walls of organs such as intestines and stomach. They function automatically without any awareness.Thus these three are the major muscles that put up together muscular system and there play a major role in various body functions such as Mobility, posture, stability and other related functions.Skeletal system:
Skeletal muscles are voluntary muscles that support the skeleton and helps in moving the bones. These skeletal muscles gets contracted due to some reactions which inturn causes movement in the body and hence it is helpful in the functioning of body movement.Their other functions involve nutrition and temperature regulation.Both muscular and skeletal systems play a major role in the functioning of the human body and act as the prominent system that is necessary for a healthy human body.
This species of bacteria accounts for 12%-15% of all infant meningitis cases. It can grow at low temperatures, making the storage of leftover baby food and bottles especially dangerous.
The bacterial species, Listeria monocytogenes, accounts for 12%-15% of infant meningitis cases.
Explanation:
Listeria monocytogenes is a group B strep gram-negative bacteria, one of the main causes of meningitis.
This species is psychrotrophic in nature which means that it can grow at low temperatures like refrigerator temperature and mostly found in areas with a temperature around 15-20 degrees Celsius.
These organisms also become psychrotolerant or psychrophiles and can grow at places where the temperature fluctuates.
This is the main reason for the spoilage of food stored in a refrigerator. So leftover baby foods, bottles stored in a refrigerator can be contaminated with these species.
When the infants ingest the contaminated food or use the bottle, they also get infected. Listeria monocytogenes cause meningitis in infants especially who are immunocompromised infants.
Why is it better to describe ion formation as a “transfer of electrons” rather than as “losing and gaining” electrons?
Explanation:
This is because the atom that ’donate’ the electrons and the one that ‘accepts’ the electrons – to become ions – will share an electrostatic association and form an ionic bond. So in reality, the atoms are only transferring electrons between themselves rather than “losing and gaining” electrons. When the ionic bonds are broken, such as in chemical reactions, the atoms go back to neutral (regain their electrons) and form new associations with other atoms to form new compounds.
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It is better to describe ion formation as a transfer of electrons rather than ''gaining and losing'' electrons because;
An atom becomes a cation after losing an electron to another atom while the atom gaining the electron becomes anion.
Usually, atoms could gain or lose electrons when they react with other atoms or chemical species.Now, when an atom loses an electron as a result of its' reaction with another element or chemical specie, the lost electron is transferred to the other atom it is reacting with.Thus, one atom is gaining an electron while another is losing that electron. And when there is this type of losing and gaining of electrons, it is called transfer of electrons because because the two atoms having this electron transfer relationship will form an ionic bond after the transfer.Thus, since the two atoms form an ionic bond by formation of an ion, we can't say they are just losing and gaining electrons because that process leads to the formation of an ion and it is transfer of electrons that causes formation of ion.Read more at; https://brainly.com/question/15352211
When does glycolysis occur
Answer:
In the cytoplasm outside the mitochondria.
A wave with a height of 5 feet and a wavelength of 15 feet has a wave base of___.
A. 7.5 Feet
B. 6 Feet
C. 12 Feet
D. 3 Feet
A wave with a height of 5 feet and a wavelength of 15 feet has a wave base of 7.5 feet.
A. 7.5 feet
Explanation:
Wave base defines the depth of the water when it is in still condition.
Wave base is half of wavelength.
Wave base = wavelength/2
Given,
Wavelength = 15 feet
So, wave base = 15 feet/2 = 7.5 feet
When the wave height is divided by wavelength then it gives the steepness of the wave.
Therefore, the wave base is 7.5feet.
Dynamic changes that take place through interactions of the geosphere, atmosphere,
hydrosphere and biosphere, can be better understood, modeled and predicted through
the use of
Answer:
Dynamic changes that take place through interactions of the geosphere, atmosphere, hydrosphere and biosphere, can be better understood, modeled and predicted through the use of feedback loops.
Explanation:
Feedback loops help us to determine how dynamic changes take place in one layer of the earth and how this change influences a change in the other layer of the earth.
For example, a feedback loop will help us to illustrate that when the temperature in the atmosphere rises, the glaciers in the biosphere melt. This causes the temperature in the geosphere to increase. Also, this will cause the water in the hydrosphere to be heated.
"The dynamic changes that take place through interactions of the geosphere, atmosphere, hydrosphere, and biosphere can be better understood, modeled, and predicted through the use of interdisciplinary approaches and advanced technologies. These include:
1. Remote Sensing: Satellites and aerial sensors collect data on the Earth's surface and atmosphere, providing real-time information on weather patterns, ocean currents, vegetation cover, and geological formations.
2. Geographic Information Systems (GIS): GIS technology allows for the integration and analysis of various types of data related to geographic locations. This can include topography, climate data, vegetation maps, and more, enabling the visualization of complex interactions between different spheres.
3. Global Positioning Systems (GPS): GPS provides precise location data which is crucial for tracking changes in the Earth's surface, such as plate tectonics, land subsidence, or glacial movement.
4. Numerical Modeling and Simulation: Computer models simulate the Earth's systems and their interactions, allowing scientists to test hypotheses and predict future changes under different scenarios, such as increased greenhouse gas emissions.
5. Data Assimilation: This technique involves integrating observational data with model predictions to improve the accuracy of forecasts and simulations.
6. Citizen Science: Engaging the public in data collection can greatly expand the spatial and temporal coverage of environmental monitoring efforts.
7. Biogeochemical Models: These models help in understanding the cycling of nutrients and chemicals through the Earth's systems, including the carbon and nitrogen cycles.
8. Climate Models: These are sophisticated tools that simulate the Earth's climate system and are used to understand past climate changes and predict future climate scenarios.
9. Ecosystem Models: These models are designed to simulate the dynamics of ecosystems, including the interactions between different species and their environment.
10. Hydrological Models: These models simulate the water cycle and can predict the impacts of changes in precipitation, evaporation, and human water usage on water resources.
By leveraging these technologies and approaches, scientists can gain a more comprehensive understanding of the Earth as an integrated system. This holistic view is essential for addressing complex environmental issues such as climate change, natural resource management, and disaster risk reduction."
The accumulation of mutations can drive the aging process .
Yes accumulation of mutation can drive aging process.
Explanation:
The molecular damage that occurs in cells and tissues for a long time due to DNA damage and epigenetic changes gets accumulated in the cell.
This leads to lowering of the homeostasis in the cell during stress conditions and eventually risks of life-threatening diseases as cancers or neurodegenerative disorders develop.
Due to mutation in the gene DNA repair mechanism also gets affected this also contributes to the ageing of cells.
The telomere of the chromosome is shortened after every mitotic division but telomerase enzyme keeps adding the DNA sequence preventing shortening aging and death of the cell. If the mutation occurs in this enzyme it will increase the ageing of cells at high rate.
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have
These snakes can sense electromagnetic waves that have A lower frequency and a longer wavelength
Explanation:
In the electromagnetic spectrum, infrared waves have a lower frequency and higher wavelength than visible light. They proceed visible light on the spectrum.
Ultraviolet waves, on the other hand, have higher frequency and smaller wavelength and precede visible light on the spectrum order.
Answer:
C
Explanation:
the table describes several organisms in a Georgia ecosystem.
Which path show one way that energy can move through the ecosystem?
a) saw palmetto-> Eastern woodrat-> bald eagle
b) bald eagle-> Eastern woodrat-> rust fungus
c) black bear-> saw palmetto-> rust fungus
d) Eastern woodrat-> rust fungus-> saw palmetto
Answer:
A
Explanation:
Energy moves through an ecosystem from plant to apex predator. The saw palmetto is a plant, the woodrat is a herbivore so it comes second, and the bald eagle is the apex predator.
The image shows a map of Easter Island, located in the Pacific Ocean. Which major feature is missing from the map?
Answer:D
Explanation:
Answer:
the answer is D.compass rose
Explanation:
what type of molecule is estrogen made of
Answer:
Explanation: Estrogen are steroid hormones which are made up of special molecules with a four ringed carbon atom back bone. A series of chemical reaction occurs spurred by an enzyme which removes and add groups to cholesterol core. This action transforms it into pregnenolone and then into androgens, then special aromatase enzyme convert androgen into estrogen.
what is the important of planting tree
Answer:
Importance of planting trees. Plantations of trees is important as they improve the life and fulfil essential needs of mankind. During photosynthesis, the treesbreakdown food materials and consume carbon dioxide. ... Trees cleanse the climate by absorbing carbon dioxide from the environment and releasing oxygen.
Question 4 (2 points)
Choose the true answer(s) from the choices below that best describe magnetic force.
Question 4 options:
A)
Magnetic force is generated by moving electrical charges or aligned atoms.
B)
Magnetic force is a contact force that can hold objects together.
C)
Magnetic force is a contact force that can act at a distance.
D)
Magnetic force can act at a distance to attract objects to each other.
Magnetic force is generated by moving electrical charge.
Magnetic force can act at a distance to attract objects to each other.
Explanation:
Magnetic force is a non-contact force that is generated by motion of charged particles or alligned atoms.
The objects that generate the Magnetic force are called magnets.
The region around the magnets where the effect of magnetic force is felt is called the magnetic field of the magnet.
Magnetic force can be attractive or repulsive.
When like poles come together the magnectic force between them behaves as a repulsive force.
When unlike poles are brought together the magnetic force between them is attractive force.
When uncharged magnetic material is brought near a magnet the magnetic force behaves as an attractive force.
How do photosynthesis and cellular respiration interact to cycle matter through an ecosystem
Explanation:
Photosynthesis captures carbon dioxide from the atmosphere and converts it to biomass. This is why forests are referred to as great carbon sinks because they remove carbon dioxide from the atmosphere and incorporate it in the biosphere.
Cellular respiration, on the other hand, converts the carbon captured in the biosphere into carbon dioxide that is released into the atmosphere. Cellular respiration usually 'burns' glucose into carbon dioxide.
These two processes work antagonistically and cycle carbon matter through the biosphere and atmosphere.
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Which process in plant physiology could not occur if the opening of the undersides leaves are closed?
A)photosynthesis
B)phototropism
C)reproduction
D)respiration
A) Photosynthesis will stop if the openings on the underside of the leaves are closed.
Explanation:
Photosynthesis produces sugars (glucose) by using carbon dioxide and water in presence of sunlight and chlorophyll. And oxygen is produced as a bye product of photosynthesis.
For the process of photosynthesis to take place continuously, it is very necessary that a continuous supply of Carbon dioxide and water is maintained into the cell.
Carbon dioxide enters the cell by the process of diffusion. The gases diffuse in and out of the plant tissue through the small openings on the surface of the leaves. These openings are called stomata.
If stomata remain closed then the diffusion of gases will cease . As a result photosynthesis will stop due to lack of raw material. Soon the plant will use up the reserve food and starve to death.
What impact did industrialization have on imperialism? a) an increase in production led to the need for new land to build factories in foregone territories c) increased production led to a surplus in manufactured goods and in a need for more customers d) competing european countries believed that conquering other territories would provide them with no more citizens to tax
Answer:
The correct option is C) increased production led to a surplus in manufactured goods and in a need for more customers
Explanation:
Imperialism can be described as a word which is used when an industrialized nation takes over a non-industrialized nation.
The major reason for imperialism to occur is because industrialized countries need more people who will buy their products so that the economy can be raised. Imperialism also occurs for the need of materials from a different place. The powerful industrialized nation dominated the political, cultural, and economic affairs of the non-industrialized nations they conquered.
help asap
It's a good idea to use website sources that end in .edu, .net,and .org when searching for reliable information
Question 1 options:
True
False
Answer:
a reliable source
Explanation:
PLEASE HELP! ASSIGNMENT DUE TODAY
Answer the following prompts in complete sentences, using the rubric below to guide your thoughts. Be sure to include supporting details to back up your responses. Also, be sure to use proper grammar, spelling, and punctuation as well as include any resources you use.
Need a graphic organizer? Click Here (Links to an external site.)
Describe the characteristics of a stable society (30 points).
Explain the relationship between energy and economic development (30 points).
Explain some of the benefits of biotechnology (30 points).
Citing sources (10 points)
Answer:
A stable society starts with every member of the society having the basic four rights for each and every individual member of the society: 1) Protection of life 2) Protection of property and honour, 3) Freedom of speech as long as it does not endanger the first two protections, and 4) Access to healthcare and education.
Due to the strong positive correlation between energy and economic growth, any negative shocks to energy, such as a rise in energy prices or the impact of energy conservation policies, will have a negative impact on GDP. If there is insufficient energy relative to demand, it will lead to a fall in GDP.
Better tasting fruits or vegetables.
Fruits and vegetables that retain their flavor and texture longer.
Fruits, vegetables, grains or oils which enhance health.
Explanation:
Answer:
b
Explanation:
Question 27 of 30
1 Point
What factors affect the temperature of seawater?
O
A. Depth and geographic area only
O
O
B. Depth, geographic area, and currents
C. Depth only
O
D. Geographic area only
SUBMIT
Factors that affect the temperature of seawater include depth, geographic area, and currents.
Explanation:The temperature of seawater is affected by multiple factors including depth, geographic area, and currents. The depth of the water can influence the amount of sunlight reaching the water and thus impact the temperature. Different geographic areas can have different climate patterns that affect seawater temperature. Additionally, ocean currents can transport warmer or colder water, further influencing the temperature.
Final answer:
Seawater temperature is determined by a combination of depth, geographic area, and ocean currents. Sunlight penetration, latitude, and heat distribution via currents are the primary factors, while solar radiation and geographical features also play significant roles.
Explanation:
The factors affecting the temperature of seawater are largely influenced by depth, geographic area, and ocean currents. The depth affects the temperature because sunlight penetration decreases with depth, leading to colder temperatures the deeper one goes. The geographic area is significant because water temperatures vary with latitude; waters are generally warmer near the equator and cooler near the poles. Furthermore, ocean currents play a crucial role in distributing heat across the globe. Warm currents can elevate temperatures in regions that would otherwise be cooler, while cold currents can have a cooling effect in areas that might be warmer without this influence.
Additional factors include solar radiation, which directly warms bodies of water, and geographical features such as wind systems, position on a continent, and mountain barriers, which can influence local climate conditions. These aspects also relate to the distribution of climate regions, with each facet contributing to the unique temperature profile of a given body of water.
Describe specialization in animal cells
Answer:
Explanation:
Process by which common cells is converted to specific cells inorder to perform specific functions
which observation proves that a cell is eukaryote
The observation that will prove that a cell is eukaryote is, the presence of genetic material within a well defined nucleus which is separated from the cytoplasm by the double layered nuclear membrane.
Explanation:
Cells can be prokaryotic or Eukaryotic depending on the presence or absence of nucleus in them.
Bacteria,archaebacteria and cyanobacteria are prokaryotic and all other known higher organisms are eukaryotic.
The feature that differentiates a prokaryotic cell from an eukaryotic cell is the absence of a distinct nucleus in them.
Eukaryotes have their genetic material enclosed by a double layered nuclear membrane while prokaryotes have their genetic material laid free in their cytoplasm.
The another difference is the lack of membrane bound organelles in prokaryotes which are present in eukaryotes.
Some eukaryotic cells lose nucleus at maturity, but they have it in their premature stages. For example, Red blood cells of humans.
What is an example of the effect of environmental factors on cell differentiation?
Answer:
Environmental factors can alter gene expression, cell signalling and cell differentiation.
Explanation:
Environmental factors can change, stop or disrupt the process of cell signalling and gene expression in organisms. The environmental factors are drugs, chemicals, temperature, etc. With the effect of environmental factors, the organism will try to adapt to the environment by changing the internal process. In case of adaptation, some organism may survive to the changing environment but there is a risk of exhibiting defects and in some case, the result can be death.Final answer:
Environmental factors can impact cell differentiation during fetal development, leading to different gene expression patterns and cell types in the body.
Explanation:
Environmental factors can have significant effects on cell differentiation. For example, during fetal development, if a mother faces famine or infections, the fetus will receive different environmental signals compared to a fetus that receives appropriate nutrition and avoids infections. These environmental signals can lead to different gene expression patterns and ultimately result in different cell types and structures in the body.
Which two statements describe the
production of soy sauce?
A. When soy sauce is made, yeast
and mold help break down the
sugars to produce various acids
that add to the flavor of the sauce.
B. When soy sauce is made, some
of the alcohol evaporates while the
carbon dioxide that is produced
gives the sauce a unique flavor.
C. When soy sauce is made, the
chemical compound acetaldehyde
gives the sauce its distinctive flavor.
D. To produce soy sauce, bacteria
are added to milk to break down
the sugars into lactic acid and
acetaldehyde.
E. To produce soy sauce, yeast
is added to a mixture of milk and
sugar, and the sugar is converted
into alcohol and carbon dioxide.
F. To produce soy sauce, yeast
and a type of mold are added to a
mixture of soybeans, wheat, and
salt.
The two statements which describe the production of soy sauce.
Option A. When soy sauce is made, yeast and mold help break down the sugars to produce various acids.
Option F. To produce soy sauce, yeast and a type of mold are added to a
mixture of soybeans, wheat, and salt.
Explanation:
Soy sauce is naturally prepared by artisanal brewing and fermentation. The basic ingredients used are soybeans, wheat and salt.
During the brewing process, microbes like mold, yeast or bacteria are added to the basic mixture to ferment. When mold is added to the basic mixture, it ferments and forms a mixture called koji.
Molds like Aspergillus soyae called the koji starter is commonly used. The enzymes present in the mold break the starch in the soy beans and wheat into simpler sugars, and proteins into amino acids, and fats into simpler lipids.
The koji is then treated with yeast and lactic acid bacteria which ferments the koji and forms the moromi which is then processed further to form soy sauce.
The enzymes of the yeast converts the simple sugars into alcohol, CO2 and other organic acids and elements which enhance the flavor of the sauce. Lactic acid bacteria takes the role of converting the sugars into organic acids like aspartic and glutamic acid, and other amines.
Folds are usually formed by _____.
1. subduction
2.divergence
3.convection
4.compression
5.inertia
please help soon!
Answer:
Folds are usually formed by Compression
Explanation:
Compression has to do with applying force to a material or substance to give another shape, in order to get a fold compression is used.
Identify the ways in which a rooftop garden can reduce the heat absorbed, compared to an asphalt roof. Select the three correct answers.(2 points)
The surface is rougher and more varied than the asphalt.
The soil is heavier than the asphalt.
The paler color reflects more light.
Plants release water vapor.
Unlike asphalt, soil is not black.
Soil holds water that would have run off the roof.
Answer:
plants release water vapor
unlike asphalt, soil is not black.
The paler color reflects more light.
Explanation:
Answer:
The paler color reflects more light. Plants release water vapor.Soil holds water that would have run off the roof.Explanation:
A rooftop garden has the ability to reduce heat by up to 7ºC, in addition to promoting a beautiful and pleasant look.
First, a rooftop garden has plants that, in addition to releasing water vapor into the atmosphere, refreshing the environment, have the ability to increase the humidity of the place. The presence of soil also promotes the reduction of temperature, this is because the organic material contained in the soil and the roots of the plants allows the water that would run off the roof to be trapped in the soil, promoting a refreshment to the place. Finally, a rooftop garden usually has light colors, these colors reflect a lot of solar energy and absorb little solar energy, limiting high temperatures.