Answer:
c) Comprise the microbial population known as phyWhich of the following best describes how the process of crossing over during meiosis leads to an increase in genetic diversity?
A) During prophase II, fragments of DNA break off of chromosomes and attach to the ends of other chromosomes, resulting in different gene sequences.
B)During prophase I, DNA segments are exchanged between homologous chromosomes, resulting in different combinations of alleles.
C) During prophase I, DNA replication takes place, and homologous chromosomes trade places with each other before lining up in preparation for metaphase.
D) During prophase II, sister chromatids separate from each other, and as they travel to opposite ends of the cell, DNA segments of nearby chromosomes are exchanged.
Crossing over is described as a process that occurs during prophase I, where DNA segments are exchanged between homologous chromosomes, resulting in different combinations of alleles, as shown in option B.
What is crossing over?It is a process that occurs during meiosis.It is a process that occurs with the breakdown of homologous chromatids.It is the exchange of fragments between homologous chromatids.Crossing over is a very important genetic process as it is capable of promoting high genetic diversity and creating new and different traits.
This process occurs during meiosis, in the phase known as prophase I. In this phase, homologous chromatids are formed and each one of them has its genetic structure.
However, crossing over promotes the breakage of these chromatids and the exchange of fragments between them. Thus creating a genetic structure different from the expected one and coaching changes in the formation of the organism.
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Answer:
the one above me is correct i got it right on my test
Explanation:
help asapp pleaseeeee!!!!
To stop the transpiration of water, the stomata occasionally close.
What adaptations does this plant have that allow it to survive in arid and dry conditions?Plants need to reduce transpiration to reduce water loss if they are to survive in a drought. Some plants that grow in arid environments have evolved to have smaller leaves and fewer stomatale sharp thorns as a result.
What adjustments are necessary for a plant in a dry environment?The leaves of these plants have a thick cuticle layer, which lessens transpirational water loss. Their extensive tap roots sink far into the soil to absorb water. Succulent plants store water in their stems, roots, leaves, and even fruits. Their waxy covering also prevents transpirational water loss.
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Identify a dependent variable measured in the researcher’s experiment. Identify one control that the researcher could use to improve the validity of the experiment. Justify the researcher analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period.
Answer:
The dependent variable measured in the researcher’s experiment is the concentration of the drug in the blood samples. One control that the researcher could use to improve the validity of the experiment is to ensure that the same amount of the drug is administered to each participant.
Analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period allows the researcher to track changes in the concentration of the drug over time. This gives a more accurate picture of how the drug is metabolized by the body and how it affects the participants.
Explanation:
Types of power station is called a .......... power plant. What one word complete the sentences.
Use the
drop-down menus and the image to
complete these statements about
prokaryotes.
Prokaryotes
a nucleus
surrounding their chromosome of DNA.
Prokaryotes are
simple cells than
eukaryotes.
Prokaryotes have a
membrane that
~ outside their cell
gives protection and support.
Prokaryotes will often move by a tail-like
DONE
Prokaryotes are less complex than eukaryotes and lack a nucleus. They also contain a flagellum outside of their cell.
Where does the DNA of prokaryotes reside?
Prokaryotes have a nucleoid in the center of the cell that houses the DNA but is not protected by a nuclear membrane. In addition to chromosomal DNA, many prokaryotes also possess smaller, circular DNA molecules known as plasmids, which can provide genetic benefits in particular situations.
Do prokaryotic chromosomes exist?
Prokaryotic cells lack a membrane-bound nucleus, in contrast to eukaryotic cells. Instead, the nucleoid, a part of the cytoplasm, is where their genetic material is located. Typically, a prokaryotic cell contains just one circular, coiled chromosome.
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What forms from the union of the sperm cell and the egg cell?
A.zygote
B.haploid cell
C.gamete
Answer: A
Explanation:
PLS ANSWER ASAP!
Answer the following questions.
What is the difference between a physical change and a chemical change?
What kind of change occurred in each test? What evidence do you have to support your decision? Be brief, but be sure to defend your conclusion with data.
FIRST PERSON TO ANSWER GETS BRAINLY
1. A physical change occurs when the chemical composition of a substance does not change, but only its physical properties. An example of this would be melting ice. A chemical change occurs when the chemical composition of a substance is altered. An example of this would be the formation of rust from iron.
2. In order to answer this I would need to see what tests the question is referring to.
But you could find one physical change and one chemical and use something like this:
Test 1:
A physical change occurred in Test 1. This is supported by the fact that the substance retained its original chemical composition but changed its form.
Test 2:
A chemical change occurred in Test 2. This is supported by the fact that a new substance was created which had a different chemical composition than the original substance.
Do others in the field of anthropology agree with Dr. Thorne's view? Explain.
Others in the field of anthropology does not agree with Dr. Thorne's view because they believe his results may be contaminated or misinterpreted.
What is Anthropology?This is a field of science which is referred to as the study of the origin and development of human societies and cultures through evolutionary history etc.
Some scientists like Gregory Adcock agree with Thorne's theory of regional continuity but others such as Chris Stringer and Ian Tattersall, does not believe Thorne's results because they feel it may be contaminated or misinterpreted which is therefore the reason why it was chosen as the correct choice.
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Which statement best describes a spring?
•the top of the saturated zone
•an underground layer of rock or sediment that holds groundwater
•groundwater flowing naturally to the surface where it is lower than the water table
•a vent in Earth's surface that periodically ejects a column of hot water and steam
Answer:
groundwater flowing naturally to the surface where it is lower than the water table
Explanation:
Answer:
c
Explanation:
When DNA is condensed in a form that can be seen with a microscope as it prepares for cell division it is called?
Answer:
The condensed form of DNA that can be seen with a microscope as it prepares for cell division is called chromatin.
Explanation:
Explain the application of biology especially the role of microbiology and biotechnology for the growing public and global health need
A,in the development of effective diagnostics ,prevention and treatment measures including production of novel drugs and recombinant vaccine
B, in the production of nutritionally enriched genetically modified crops and animals to alloviate food insecurity which is a common dilemma particularly in underdeveloped countries
Biology, and specifically microbiology and biotechnology, play a crucial role in the growing public and global health need for effective diagnostics, prevention, and treatment measures, as well as in the production of nutritionally enriched genetically modified crops and animals to alleviate food insecurity.
What is biotechnology use?A) In the development of effective diagnostics, prevention, and treatment measures:
Microbiology is the study of microorganisms, including bacteria, viruses, fungi, and parasites, and it is an important field in the development of new diagnostic tests, vaccines, and therapies for infectious diseases. For example, microbiologists can use techniques such as bacterial culture and DNA sequencing to identify and characterize pathogenic microorganisms, which can help to identify outbreaks of infectious diseases and guide treatment decisions.
Biotechnology is the application of biological processes, such as fermentation and genetic engineering, to the production of products and technologies. It has played a significant role in the development of novel drugs and recombinant vaccines. For example, recombinant vaccines are produced using genetic engineering techniques to introduce a gene from a pathogen into a host organism, such as yeast or bacteria. The host organism produces the protein encoded by the pathogen's gene, and this protein can be used to create a vaccine. Recombinant vaccines have been developed for a number of infectious diseases, including hepatitis B, human papillomavirus (HPV), and influenza.
B) In the production of nutritionally enriched genetically modified crops and animals:
Biotechnology is also being used to produce nutritionally enriched genetically modified crops and animals to alleviate food insecurity, particularly in underdeveloped countries. For example, genetically modified crops can be engineered to contain higher levels of essential nutrients, such as vitamins and minerals, to help address malnutrition. Genetically modified animals can also be produced to produce nutritionally enriched food products, such as milk or eggs, or to be more resistant to diseases, which can help to improve the efficiency and sustainability of livestock production.
In all, the fields of microbiology and biotechnology have made significant contributions to the development of effective diagnostics, prevention, and treatment measures, as well as to the production of
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1 Identify Unscramble the letters below to find some landforms that result from the movement of tectonic plates and related forces.
FTIR ELALYV
NALIVCCO LIDNAS
UFATL-CLBOK OMTANNIU
COVNALCI UPAATEL
DOLEDF TNUMANIO
The scramble letters of the landforms that result from the movement of tectonic plates and related forces are:
Fault-line valleyVolcanic islandFault-block mountainContinental plateFold mountainWhat is the movement of tectonic plates?The letters that is provided or spell out several landforms that result from the movement of tectonic plates and related forces are defined below:
"Fault" refers to a crack in the Earth's crust where two tectonic plates have shifted against each other. This movement can cause the land on either side of the fault to be raised or lowered."Valley" refers to a low-lying area of land between mountains or hills. Valleys can be formed by a variety of processes, including erosion caused by rivers or glaciers, or by tectonic activity that causes the land to sink."Volcano" refers to a geological feature that occurs when magma from the Earth's interior rises to the surface, forming a mountain-like structure that can erupt with ash, lava, and other materials. Volcanoes are usually found at the boundary between tectonic plates.Also, the "Fault-block" refers to a landform that is created when a block of land is raised or lowered along a fault line. The block that is lifted is called a horst, the block that sinks is called a graben
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A plant stem's two main functions are to support the leaves and to transport materials
between roots and leaves. As a stem develops, it possesses three types of permanent
tissues: surface tissue, ground tissue, and vascular tissue. The surface and ground
tissues support and give structure to the plant. The vascular tissues are the transport
systems of the plant. The vascular tissues usually exist in one of three patterns and are
known as the phloem and xylem.
Both the xylem and phloem are made up of several different types of cells that make up
transport tubes for needed nutrients. In general, xylem nutrients (sap) travel from the roots
to the rest of the plant. Phloem sap is derived from photosynthesizing leaves and from
there is carried throughout the plant.
What would we be able to study by injecting a nutrient dye into the root of a plant?
A. phloem sap transport
B. pith and cortex cells
C. all vascular tissues
D. xylem sap transport
OE. total plant photosynthesis
a stock solution has been diluted at 16 fold. It is now 80 micro mol. What was the original stock concentration in Milli moles?
The original stock concentration in Milli moles will be nearly 1280 millimole.
What is concentration?
Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume.
Mass concentration, molar concentration, number concentration, and volume concentration are four different categories of mathematical description.
The quantity of a substance, like salt, that is present in a specific volume of tissue or liquid, like blood, according to science. When there is less water present, the material becomes more concentrated.
(C1) (V1) = (C2) is the formula for determining a dilution (V2)
C1 = concentration of the starting solution.
V1 = volume of the starting solution.
C2 = concentration of the final solution.
V2 = volume of the final solution.
Here,
C1 = x
V1 = 1000 micro mol
C2 = 16
V2 = 80 micro mol
So,
1000x = 16 x 80
x = 1280/1000
x = 1.280
Thus, the original stock concentration is 1280 millimole.
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What name is given to the scientific study of life
Answer:
Biology
Explanation:
Bio meaning life
the root logy meaning study
Which organelle synthesises energy for active transport?
A.
Golgi Body
B.
Endoplasmic reticulum
C.
Centriole
D.
Mitochondria
Answer: the answer is D
Explanation:
1. Which of these are included in the biosphere? A) Landslide B) Plant pollen C) Glacier D) Volcanic gas
Answer:
B: Plant pollen is the only one included.
How fast does evolution occur?
Question 1 options:
From one generation to the next
After multiple generations
Immediately
Answer:
It takes a million generations or more to evolve lasting changes, a study found
Explanation:
the answer would probably be a after multiple generations
Question 5 of 5
New Mexico and Arizona are in a
hot, and the region gets fewer than 10 inches of rain each year.
A. temperate forest
OB. grassland
C. chaparral
D. desert
ecosystem. Temperatures are very
SUBMIT
why are fat cells larger than red blood cells
AnswerLarger mammals don't typically have bigger cells; they just have more of them, is the typical response to the question of whether they are bigger in larger mammals than in smaller ones. For example, compare the liver cells of an elephant and a mouse.
Red blood cells, liver cells, and other cell types that often split and replace themselves are all around the same size; however, in large animals, permanent, long-lived cells like brain and fat cells are larger.
Explanation:
Fat cells, also known as adipocytes, are larger than red blood cells because they have different functions in the body. Red blood cells are responsible for carrying oxygen from the lungs to the body's tissues, while fat cells store energy in the form of fat.
Fat cells are much larger than red blood cells because they need to be able to store a large amount of fat. A single fat cell can contain up to 50,000 times more fat than a red blood cell. This allows the body to store a significant amount of energy that can be used during times of increased energy demand or when food is scarce.
Red blood cells, on the other hand, are much smaller because they need to be able to circulate throughout the body and fit through the small blood vessels. They have a flattened, disk-like shape and are only about 7-8 micrometers in diameter. This is much smaller than fat cells, which can be up to 100 micrometers in diameter.
Overall, the differences in size and function between fat cells and red blood cells reflect the different roles they play in the body.
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Part
A
Fill in the table using credible sources and your own experiences and past observations. If you're not sure what one of the
characteristics means, look it up on a credible website
A source is trustworthy if it was written by a subject matter expert, is error-free, and is objective.
How do I know if a source is credible?Peer-reviewed publications, governmental entities, think tanks for scientific study, and trade associations are examples of reliable sources. Due to their strict publishing standards, major newspapers and magazines also offer trustworthy information.
A reliable source is one that was authored without bias or inaccuracies by a subject matter expert in the field. This manual outlines the distinctions among reliable, scholarly, and peer-reviewed sources.
Take note of the three letters that follow the domain name, such as "edu," "gov," "org," and "com," which indicate the site is an educational, governmental, or nonprofit entity (commercial). Websites with the. gov and. edu extensions are typically trustworthy, but watch out for sites that are trying to trick you.
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answer is given from edmentum
4. Carla placed three identical plants on a
sunny windowsill. Using the same amount
of water each time, she watered one plant
twice a day. She watered the second plant
once a week. She did not water the third
plant. After three weeks, she found that the
plant watered once a week was thriving.
The plant that was watered twice a day
was dying. The plant that was not watered
was brown and dead. What conclusion can
Carla draw?
A. Water causes plants to die
B. Plants need a certain amount of water to live
C. Plants should not be placed on sunny windowsills
D. Plants do not live very long
The conclusion is that plants need a certain amount of water to live. Therefore, option B is correct.
What is the effect of water on the life of a plant?Water is a very important factor that affects the life of a plant. Water is required by plants to perform photosynthesis, through which they make food. If a certain amount of water does not available for plants then they will dry due to lack of food.
It is also required for the cooling and transportation of minerals and nutrients in the plant.
Plants need a certain amount of water to live. Therefore, option B is correct.
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A drawing of a leaf and a dichotomous key are provided.What leaf is shown in the drawing
The leaf shown in the drawing is a Liquidambar, option A.
What dichotomous key depicts a Liquidambar?A Liquidambar is a coniferous North American and Asian tree with maple-like leaves and vibrant autumn colors that produces aromatic resinous balsam. The generic name, Liquidambar, means, literally, "liquid amber" and refers to the pleasant-tasting resin that the tree exudes when you peel away the deeply furrowed bark. Their dichotomous key is a series of steps in which different observable traits are chosen.
A dichotomous key in tree identification might ask whether the tree has leaves or needles. If the tree has leaves, the key directs the user down one set of questions; if it has needles, the key directs the user down a different set of questions.
The complete question is:
A drawing of a leaf and dichotomous key provided. what leaf is shown in the drawing?
A, Liquidambar
B, magnolia
C, pine
D, redbud
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ASAP HELP!!!!! LIMITED TIME!!!!!!!!
What is one way that greenhouse gases are released into the
atmosphere?
Select one:
O Introducing non-native species into an environment
O Oil spills
O Littering
O Burning fossil fuels
Answer:
O Burning fossil fuels
Explanation:
Fossil fuel burning releases tons of CO2 which is a green house gas
Which of the following does not indicate velocity?
A. 14 feet per second per second
C. 80 miles per hour towards New York
B. 40 miles per hour towards town
D. 28 miles per second towards Ohio
Answer:
A. 14 feet per second per second does not indicate velocity.
Explanation:
Velocity has formula of displacement over time. Displacement can have unit such as mile, meter, kilometer, etc while time can have unit such as second, hour, minute, etc.
With division rule of term, we would have unit of measurement over unit of time, thus velocity only have one-degree term (no power term).
Unlike acceleration, acceleration has square term in time unit because acceleration is change in velocity over time. Velocity has unit of measurement over unit of time, with these units dividing another unit of time, we have:
[tex] \displaystyle{ \dfrac{ \text{measurement}}{ \text{time}} \div \text{time} = \dfrac{ \text{measurement}}{ \text{time}} \times \dfrac{1} {\text{time} } \to \dfrac{ \text{measurement}}{ \text{time}^{2} }}[/tex]
Hence, acceleration would have time² unit while velocity only has time¹ unit.
And as seen in the choices, only unit that appears as time² is A choice as feet per second per second means (feet/second)/second = feet/sec² and this is acceleration, not velocity.
The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers.
(p + q = 1, p2 + 2pq + q2 = 1)
A.
0.0392
B.
0.0254
C.
0.045
The number of heterozygous carriers for a recessive genetic disorder in the Caucasian population of United States is 0.0392, option A.
How to find heterozygous carriers?In genetics, heterozygous means having inherited different versions (alleles) of a genomic marker from each biological parent. As a result, a person who is heterozygous for a genomic marker has two distinct versions of that marker.
Using the formula p + q = 1, p2 + 2pq + q2 = 1,
The allele frequency, p² = 1/2500 = 0.0004
√p² = √0.0004
p = 0.02
substituting p in the formula p + q = 1,
0.02 + q = 1,
q = 1 - 0.02 = 0.98
Frequency of heterozygous individuals = 2pq
2(0.02 x 0.98) = 0.0392
With the application of Weinberg theorem, p2 + 2pq + q2 = 1, the frequency allele of heterozygous carriers is 0.0392.
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A deer eats a leaf from a tree and gets energy from sugar molecules in the leaf. Which two organelles are required to make this process possible? Pls help thank u so much
Two organelles that are required to make the process of the deer obtaining energy from sugar molecules in the leaf possible are the mitochondria and the chloroplasts.
What is the function of mitochondria and chloroplast?Mitochondria are organelles found in the cytoplasm of eukaryotic cells and are responsible for generating the majority of the cell's energy. They do this through a process called cellular respiration, in which sugar molecules are broken down and the energy released is used to produce molecules of adenosine triphosphate (ATP), which the cell can then use as a source of energy.
Chloroplasts are organelles found in the cells of plants, algae and some other organisms that absorb light energy and convert it into chemical energy. They are only found in the cells that have green pigments called chlorophyll. Chloroplasts are the site of photosynthesis, the process by which plants and other organisms convert light energy into chemical energy by using carbon dioxide and water to produce glucose and oxygen.
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Two organelles that are required to make the process of the deer obtaining energy from sugar molecules in the leaf possible are the mitochondria and the chloroplasts.
What are Organelles?The majority of the energy produced by eukaryotic cells is produced by mitochondria, which are organelles that can be found in the cytoplasm of these cells.
Through a process known as cellular respiration, sugar molecules are broken down and the energy released is used to form molecules of adenosine triphosphate (ATP), which the cell can then use as a source of energy.
In the cells of plants, algae, and certain other species, there are organelles called chloroplasts that collect light energy and transform it into chemical energy.
Therefore, Two organelles that are required to make the process of the deer obtaining energy from sugar molecules in the leaf possible are the mitochondria and the chloroplasts.
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Parasitic worm infestation
What are the advantages of external fertilization? Select all that apply.
higher survival rates
produces many offspring
increased genetic variation
environment dictates success of fertilization
Answer: increased genetic variation
Explanation:
The occipital lobe processes visual information. The temporal lobe helps process hearing and memory. And the parietal lobe helps the brain process different stimuli, like pressure, temperature, and pain. What can you conclude about our brains based on this information?
A) One major function of the brain is making sense of different stimuli coming in from the outside world.
B) The most important thing that the brain does is organize our memories by time so that we can quickly recall them.
C) Brain activity is only concerned with things happening inside the human body, not outside in the larger world.
D) The first step in processing sound occurs in the occipital lobe, where the sound is processed and organized.
For instance, while the occipital lobe is crucial to visual processing, both sides also need portions of the parietal, temporal, and frontal lobes to handle complicated visual inputs. Thus, option D is correct.
What combine role of occipital lobe and temporal lobe?Below the lingual gyrus, the fusiform gyrus projects from the temporal lobe. The occipital lobe is the area of the brain responsible for processing vision. It is linked to memory formation, object and face identification, colour perception, distance and depth perception, and visuospatial processing.
Although each lobe is said to have a particular purpose, most tasks call for the cooperation of several regions across both hemispheres.
Therefore, The first step in processing sound occurs in the occipital lobe, where the sound is processed and organized.
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