Which of the following answer choices does not include a mechanism for evolution?
Gene flow
Recombination
Fertilization
Mutation
Answers
Answer:
Recombination
Explanation:
Related Questions
in a eukaryotic cell which organelle gives ribosomes instructions for protein synthesis
Answers
Answer:
The nucleus.
Explanation:
The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis.
Xylem, phloem and stomata guard cells have related functions; describe these relationships and how does this allow for the plant to adapt to its environment?
Answers
Xylem is involved in the unidirectional transport of water and minerals. It is driven by transpiration pull. Stomatal opening is required for xylem transport .If stomata are not opens at all the ascent of sap cannot occur.
when plat roots are abosorb water and nutrients front he soil , these materials move up the nutrients from the soil , these materials move up the stem and into the leaves through the xylem. capillary action which relies on water of cohesion surface tension, is allow water to defy gravity and it travel through xylem and into leaves.
Photosynthesis occurred then produced sugar move through the phloem to other parts of plant of the plant to be used in cellular respiration or stored for later.
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How many electrons does carbon have? (1 point)
O five electrons (three in its inner shell and three in its outer shell)
O six electrons (two in its inner shell and four in its outer shell)
O seven electrons (three in its inner shell and four in its outer shell)
O eight electrons (four in its inner shell and four in its outer shell)
Answers
Answer: six electrons (two in its inner shell and four in it’s outer shell)
Explanation: I got it right
Dr. Majid met with a new patient who had a long list of puzzling symptoms. After talking with him for about 10 minutes, dr. Majid told the patient that she needed to run some tests. Dr. Majid ordered a series of blood and urine tests but privately believed that the patient probably had diabetes. When the test results came back, dr. Majid sat down to analyze them. Analyzing the test results to confirm or disprove her hunch is an example of the _____ stage of intuition
Answers
The stage of intuition that involves analyzing test results to confirm or disprove a hunch is known as the verification stage.
During this stage, Dr. Majid carefully examines the blood and urine test results to determine if they align with her initial suspicion of the patient having diabetes.
The analysis of these results involves looking for specific indicators and patterns that are characteristic of diabetes, such as elevated blood sugar levels or the presence of glucose in the urine.
By conducting this analysis, Dr. Majid aims to verify or disprove her hunch based on the objective data provided by the test results.
This stage is crucial in the diagnostic process as it helps to confirm or rule out potential conditions, guiding further treatment decisions.
It's important to note that while the verification stage is an integral part of intuition in medicine, it is not the only stage. Intuition in medicine involves a combination of pattern recognition, clinical experience, and analytical thinking.
The verification stage allows healthcare professionals like Dr. Majid to ensure that their initial hunches are supported by objective evidence and helps to avoid any potential biases or errors in diagnosis.
In summary, the stage of intuition that involves analyzing test results to confirm or disprove a hunch is called the verification stage.
During this stage, healthcare professionals review the objective data provided by the test results to validate their initial suspicions and guide further treatment decisions.
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Image below please its due in like 30 minutes and this is only the second question
Answers
Answer:
the second choice is incorrect
Explanation:
plz give me brainliest i only need one more to increase my level!
During which phase of meiosis is the chromosome number reduced?
Answers
Answer: Meiosis I
Explanation:In meiosis I there is a reduction of the chromosome number from diploid (two separate copies of each chromosome) to haploid (one copy of each chromosome) during the formation of gametes.
Which of the following can lie downstream of RTK activation as well as GPCR activation? Select any/all answers that apply.
activation of GBPs (GTP-binding proteins)
Notch activation
activation of kinases
Wnt activation
activation of transcription factors
Answers
Both RTK (Receptor Tyrosine Kinase) activation and GPCR (G-protein coupled receptor) activation can lead to downstream activation of GBPs, kinases, and transcription factors.
RTK activation and GPCR activation are two distinct signalling pathways involved in cellular communication. They can converge on common downstream signalling molecules. One such molecule is GBPs (GTP-binding proteins) which can be activated by both RTK and GPCR signaling. GBPs play a crucial role in transmitting signals and regulating various cellular processes.
Additionally, both RTK and GPCR activation can result in the activation of kinases. Kinases are enzymes that catalyze the transfer of phosphate groups to other proteins, thereby regulating their activity. The activation of kinases can trigger a cascade of signalling events leading to diverse cellular responses.
Moreover, both RTK and GPCR activation can ultimately lead to the activation of transcription factors. Transcription factors are proteins that bind to specific DNA sequences and regulate gene expression. They play a vital role in controlling the synthesis of proteins and influencing cellular functions.
On the other hand, Notch activation and Wnt activation are independent signalling pathways that are not directly associated with either RTK or GPCR signalling. Notch signalling is a highly conserved pathway involved in cell fate determination and development, while Wnt signalling regulates various processes during embryonic development and adult tissue homeostasis. Although they have critical roles in cellular signalling, they do not lie downstream of RTK or GPCR activation.
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Podemos afirmar que una comunidad ´presenta una gran biodiversidad cuando, a)La diversidad taxonómica es variada. b)El número de organismos es pequeño. c)La superficie del terreno es extensa. d)La competencia entre los organismos es severa.
Answers
Answer:
c) La superficie del terreno es extensa.
Explanation:
La comunidad tiene una gran biodiversidad cuando la superficie de la tierra es grande. La biodiversidad se refiere a la cantidad de plantas y animales que viven en un hábitat específico. Cuando una población diferente vive en la misma área o terreno, se llama comunidad. Por lo tanto, la población de organismos vivos en una comunidad es muy alta, por lo que se necesita una gran tierra para acomodar a todos los organismos vivos que viven en una comunidad.
Answer the question using CER (claim evidence reasoning)
Are plants absorbing parts of food molecules ABOVE the surface?
Make sure to support you answer with evidence!
Answers
Plants absorbing parts of food molecules ABOVE the surface is a false claim. There is proof available to support this claim.
What is the evidence that the given claim is false?Plants have specialized structures called roots, which are responsible for absorbing nutrients and water from the soil.
Nutrients are typically found in the form of ions, which can only be absorbed by the roots.
Food molecules, such as carbohydrates, lipids, and proteins, are too large to be absorbed by plant roots.
Additionally, the waxy cuticle on the surface of leaves prevents molecules from passing through and being absorbed.
Reasoning: Based on the evidence presented, it can be concluded that plants do not absorb parts of food molecules above the surface. Nutrients are only absorbed by the roots, and food molecules are too large to pass through the waxy cuticle on the surface of leaves. Therefore, any food molecules that plants require for growth and development must be broken down into smaller molecules by enzymes before they can be absorbed by the roots.
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What is reproductive isolation?Why is it necessary for speciation to occur? Explain one way reproductive isolation might occur.
Answers
Reproductive isolation is a process in which individuals in a population are prevented from reproducing. This isolation can occur in several ways, such as a physical barrier that separated these species into two groups that will reproduce with each other and generate a new species.
Why is it necessary for speciation to occur?Speciation is an essential evolutionary process for the creation of new species. It is worth remembering that from reproductive isolation, the individuals of a population have been differentiating and evolving and in the end, there will be a different species from the initial one. Therefore, speciation is necessary for the emergence of new species.
Explain one way reproductive isolation might occur.Reproductive isolation may occur due to a geographic barrier. In this case, a population is separated by a geographic barrier such as a river, a canyon, or a mountain, thus generating subpopulations that will begin to evolve and adapt in different ways. In the end, we will have different subpopulations, but in the beginning, they were part of the same population.
what part of the body has enzymes that break down proteins
Answers
Answer:
Most of the chemical reactions occur in the stomach and small intestine. In the stomach, pepsin is the main digestive enzyme attacking proteins. Several other pancreatic enzymes go to work when protein molecules reach the small intestine. Lipase is produced in the pancreas and small intestine.
Explanation:
a graph that shows the strength of an effect of a substance at different doses is a(n) _____ curve.
Answers
A graph that shows the strength of an effect of a substance at different doses is called a dose-response curve.
A dose-response curve is a graphical representation that illustrates the relationship between the dose or concentration of a substance and its corresponding effect or response. This curve is commonly used in various scientific fields, including pharmacology, toxicology, and medicine, to assess the potency, efficacy, and safety of drugs, chemicals, or treatments.
The shape of a dose-response curve can vary depending on the substance and the biological system being studied. The curve typically starts at a baseline level, where the effect is minimal or absent at lower doses. As the dose increases, the response gradually increases until it reaches a maximum or plateau, where the effect reaches its peak. Further increases in dose may not produce a significant additional response or may even lead to adverse effects. Dose-response curves can provide valuable information about the potency and therapeutic index of drugs, helping researchers determine the appropriate dosage range for effective treatment while minimizing side effects.
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Where is the carbon taken in by plants during photosynthesis stored?a. the groundb. plant structuresC. the aird. all of the above
Answers
The carbon is taken from the air and is used in photosynthesis to produce glucose (from carbon dioxide and water reacting with the sunlight). This carbon enter the leaves through the stoma and is incorporated into organic compounds within the plant structure (being stored there).
Therefore, the correct answer is b. plant structures.
the frequency with which random events occur between two points is a function of the distance between those two points. how do we use this principle to map genes in eukaryotes? be able to calculate and map genes in eukaryotes based upon parental and recombinant progeny experimental results
Answers
The principle of frequency of recombination between two points on a chromosome being a function of their distance apart can be used to map genes in eukaryotes.
This is achieved by analyzing the frequency of recombination events between different genetic markers located on the same chromosome. The distance between two genetic markers can be estimated by determining the frequency of recombinant progeny in a cross between two individuals that differ in the alleles of the markers being studied.
The percentage of recombinant progeny can be used to calculate the distance between the markers in units of centimorgans (cM). By analyzing the frequencies of recombination between multiple markers, a genetic map of the chromosome can be constructed, showing the relative positions of the markers and the genes they represent.
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what are the filamentous mats formed by most fungi called? question 2 options: a) hyphae b) mycelia c) haustoria d) arbuscles
Answers
Filamentous mats formed by most fungi are called: mycelia. The correct option is B.
Mycelium is the vegetative part of the fungus, which is a network of hyphae that can grow under the surface of the soil or in other substrates like decaying organic matter. This network is used by fungi to absorb nutrients and moisture from the environment and to distribute nutrients throughout the organism.
It also helps to anchor the fungus in place and protect it from predators and other environmental stresses. Mycelia are composed of individual strands called hyphae. These are thread-like structures that can extend and branch out to form a complex network of filaments.
Hyphae can grow in different directions, allowing the fungus to explore and exploit its environment. They can penetrate small spaces and break down organic matter, making nutrients more available to the fungus and other organisms in the ecosystem.
The growth and behavior of mycelia are influenced by a variety of factors, including temperature, humidity, pH, and the availability of nutrients. They can exhibit a range of patterns and textures depending on these factors and the species of fungus involved. Filamentous mats can be seen on decaying matter such as dead trees or in moist soils, etc.
Thus, mycelia are the answer to the given question.
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Why should plastic bags be avoided for collecting and storing biological samples containing DNA?
A. They leach chemicals.
B. They are difficult to store.
C. They are expensive.
D. They retain moisture.
Answers
Answer:
b
because they are difficult to store
Richard Pyle turned to Bill Stone when he wanted to learn more about rebreathers and other diving technology.
OA. True
OB. False
Answers
Answer:
True
Explanation:
in a certain ecosystem, field mice are preyed on by snakes and hawks. the entry of wild dogs into the system adds a third mouse predator. what would be the most likely short-term result of this addition?
Answers
In the given ecosystem, the most likely short-term result of the addition of wild dogs as a third mouse predator would be an increase in predation pressure on the field mice population.
As wild dogs start preying on mice along with snakes and hawks, the overall number of field mice being consumed will likely rise.
Consequently, the field mice population may experience a decline, which can lead to a temporary imbalance in the ecosystem.
This decrease in the prey population might also intensify competition among the three predators (snakes, hawks, and wild dogs) for the available field mice.
In turn, this increased competition may affect the populations of snakes and hawks, as they now have to share their food source with wild dogs.
Moreover, the availability of other prey species in the ecosystem would play a crucial role in determining the overall impact of wild dogs' entry.
If alternative prey is scarce, the short-term consequences of the additional predator could be more severe for the field mice population, as well as for snakes and hawks.
In summary, the most likely short-term result of wild dogs entering the ecosystem as a third mouse predator would be an increase in predation pressure on field mice, leading to a decline in their population and intensified competition among the predators.
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the court found the soldier guilty on the basis of the womans remarkable memory for dates and details that apparently eliminated all other possible fathers what are the possible genotypes for these three people
Answers
Genotypes of The Soldier's Blood Type: IOIO The O blood group only contains antigen O. Mother's blood type genotypes are IAIO.
What are the three genotype types?
There are three different genotype types: homozygous dominant (PP), homozygous recessive (PP), & heterozygous (Pp). The traits are the same in homozygous dominant and heterozygous genotypes.
Why is genotype important?
Similar to the term "genome," "genotype" in one meaning refers to the total collection of genes present in an organism's cells. However, in a more restricted meaning, it can refer to various alleles, or variant versions, of a gene for specific features or qualities.
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different between algae and fungi
Answers
Answer:
algae are autotrophs, and fungi are heterotrophs. algae contain photosynthetic pigments. fungi are capable of digesting non-living, organic material, and also absorbs simple nutrients by the fungal hyphae
if a agg in the trna anticodon pairs with a ucu (instead of with a ucc) in the mrna codon:
Answers
If an AGG in the tRNA anticodon pairs with a UCU instead of a UCC in the mRNA codon, it will result in a different amino acid being added to the growing polypeptide chain during protein synthesis.
This is because the genetic code is specific, and each codon (three nucleotides in the mRNA sequence) codes for a specific amino acid. The anticodon of the tRNA is complementary to the codon in the mRNA, and when they pair up, the amino acid carried by the tRNA is added to the polypeptide chain. In this case, AGG normally pairs with UCC, which codes for the amino acid serine. However, if AGG pairs with UCU instead, it will code for a different amino acid called leucine. This change in amino acid sequence can have significant effects on the structure and function of the protein being synthesized.
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How are bacterial chromosomes different from eukaryotic chromosomes?
Answers
Answer:
A bacterial chromosome is a circular, double-stranded DNA molecule with associated proteins. A eukaryotic chromosome is a linear, double-stranded DNA molecule with many associated proteins, including histones.
Explanation:
What is the medical term used for changes in virility or sexual desire in middle-aged men?a. menarcheb. viropausec. perimenopaused. male menopause
Answers
The medical term used for changes in virility or sexual desire in middle-aged men is "male menopause," also known as andropause or testosterone deficiency syndrome.
This term refers to the age-related decline in testosterone levels, which can lead to changes in sexual desire, energy levels, and other aspects of men's health.It is characterized by a gradual decline in testosterone levels in men over the age of 50, leading to symptoms such as decreased libido, erectile dysfunction, fatigue, and mood swings. Unlike menopause in women, which is a sudden cessation of ovarian function, andropause is a gradual process and testosterone levels can vary widely among individuals. Treatment options may include testosterone replacement therapy, lifestyle modifications, and medications to manage specific symptoms.
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What concept does the illustration shown in the picture represent?
Answers
Answer:
D
Explanation:
It's the building and sequencing of your DNA.
which metallic oxide is mixed in ordinary glass to make red and black glass of each
Answers
Answer:
Selenium, like manganese, can be used in small concentrations to decolorize glass, or in higher concentrations to impart a reddish color, caused by selenium nanoparticles dispersed in glass. It is a very important agent to make pink and red glass.Here is ur answer ✌
When making ruby-colored glass, pure metallic copper can occasionally be used in place of gold to make extremely dark, opaque red glass.
What is glass?Depending on the concentration, nickel can generate glass that is blue, violet, or even black. Nickel gives the lead crystal its reddish color.
To remove the green tint from the glass, manganese dioxide, which is black, is employed in a very slow process, it is transformed into sodium permanganate, a dark purple chemical.
Red glass is made with the help of gold chloride. It's unfortunate that red glass cannot be used to create gold. Glass with a blue/violet color is made using cobalt oxide.
Therefore, pure metallic copper is mixed with ordinary glass to make red and black glass in place of gold to make it extremely dark.
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After you divide a medical word into its word parts, you get the definition of the word by beginning with the meaning of the ________.
A) prefix
B) combining form
C) suffix
D) Latin singular
Answers
Answer:
Y
Explanation:
Ii
What is La Niña? What weather effects can La Niña cause?
Answers
Answer: La Niña causes water in the eastern Pacific to be colder than usual. In the same region, El Niño can cause the water to be warmer than usual. Areas that are hit with drought during La Niña years are pummeled with rain in El Niño years.
Explanation: The biggest impact of La Niña on North American rain, snow and temperatures tends to be felt during the winter, according to NOAA. Generally speaking, La Niña winters tend to be drier and warmer than normal across the southern U.S. and cooler and wetter in the northern U.S. and Canada!
Anatomy can be best described as:
(a) The study of how the body and its parts work and function together.
(b) The study of applying exercise principles to body functions and how each reacts.
(c) The study of the structure and shape of the body and its parts.
(d) The study of gross anatomy structure and how they apply to microscopic structures.
Answers
Anatomy can be best described as (c) The study of the structure and shape of the body and its parts.
The study of the structure and shape of the body and its parts. Anatomy is the branch of biology that deals with the study of the structure and organization of the body and its parts. It includes the study of gross anatomy (the structure of the body and its parts) as well as microscopic anatomy (the structure of cells and tissues).
This branch of biology focuses on the physical structures of organisms, including their organs, tissues, and cells. It is often used in medical fields to understand how the body functions and how different parts of the body interact with each other. Anatomy can be further divided into subcategories, such as gross anatomy, which studies the larger structures of the body, and microscopic anatomy, which studies the smaller structures at a cellular level. Overall, anatomy is a crucial field for understanding the physical structure and functioning of living organisms.
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HELP PLS ASAP!! I need this in an hour and 30 mins!
Ps. Have a lovely day
Answers
Good luck!!
a nurse is caring for a client who needs to increase his protein intake the client tells the nurse some of the food he enjoys which of the following food should the nurse recommend as the best source of protein among these suggestion
A.) peanuts
B.) chicken
C.) Eggs
D.) yams
Answers
Answer:
chicken
Explanation:
chicken is always the best source of protein
Chicken is the best source of proteins.
What are the functions of proteins?Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.
Serious protein deficiency can cause swelling, fatty liver, skin degeneration, increase the severity of infections and stunt growth in children.
Protein is an important part of a healthy diet. Proteins are made up of chemical 'building blocks' called amino acids. Your body uses amino acids to build and repair muscles and bones and to make hormones and enzymes.
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