In which process is a zygote formed in a plant from the joining of a sperm and an egg?
A.fertilization
B. pollination
C. seed dispersal
D. vascular transport
Answers
Answer:
A. Fertilization
Explanation:
Answer:
A. Fertilization
Explanation:
Fertilization is the process in which a sperm from a male organism is transported into the ovaries of a female organism, and fertilizes the egg inside, creating a zygote. This correctly matches the description of the question it's asking, so therefore the answer is A. Fertilization.
(Hope I helped you Edge users!)
Related Questions
Which of these organelles is responsible for protein synthesis?
Answers
Answer:
I would have to say either ribosomes or mitochondria.
Answer:
the ribosomes :)
Explanation:
Guys pls help me!!!!
Answers
Answer:
1. one serving
2. 55 grams
3. 55 grams
4. 0g
5. ?
Write a brief explanation (paragraph length) of how , by calculating forces and torques in a physical system such as the human body, it is possible to deduce the best way to lift an object without injuring yourself.
Answers
When calculating forces and torques in a physical system such as the human body, it is possible to deduce the best way to lift an object without injuring yourself.
There are several factors that are important to consider when lifting objects, including the weight of the object, the position of the object, and the angle of the lift. By calculating the forces and torques involved in lifting an object, it is possible to determine the optimal technique for lifting the object without injuring yourself. For example, lifting a heavy object with the back muscles alone can cause strain and injury. However, by using the legs to provide the majority of the lifting force, the back can remain relatively straight and avoid injury. Additionally, lifting an object from a lower position, such as from the ground, can require more force and torque than lifting an object from a higher position. Thus, it is important to consider the position of the object before attempting to lift it. Overall, by carefully analyzing the forces and torques involved in lifting objects, it is possible to determine the optimal technique for lifting an object without injuring yourself. This can help prevent injury and ensure that the task is completed safely and efficiently.
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Which statement best describes an example of how human activities lead to decreased biodiversity?
A. Sustainable farming practices allow the soil to retain nutrients and minerals, increasing its resiliency.
B. Construction requires the removal of organisms to allow space for urban growth, decreasing an ecosystem's resiliency.
C. Sustainable construction practices minimize human impacts on an ecosystem, allowing it to remain stable.
D. The use of renewable resources minimizes the demand for new mines, decreasing the need to disturb ecosystems.
Answers
Answer: B
Explanation:
It is the only option that describes a negative effect on the ecosystem due to humans.
What happened to the sound wave when it encountered air of a different temperature?
(A) The sound wave changes speed and direction, bending away from the denser air and towards less dense air.
(B) The sound wave changes speed and direction, bending away from the less dense air and towards more dense air
(C) The sound wave changes direction but not speed, bending away from the less dense air and towards more dense air.
(D) The sound wave changes direction but not speed, bending away from the denser air and towards less dense air
Answers
When a sound wave encounters air of a different temperature, the correct answer is (A) The sound wave changes speed and direction, bending away from the denser air and towards less dense air.
A sound wave is a type of mechanical wave that is created by the vibration or disturbance of matter. It is characterized by the transfer of energy through compressions and rarefactions of the medium it travels through. Sound waves can propagate through various mediums, including air, water, and solids.
Changes in temperature can cause variations in air density. Sound waves travel at different speeds in the air with different densities. When a sound wave moves from an area of higher air density (cooler air) to an area of lower air density (warmer air), it slows down and changes direction, bending away from the denser air and towards the less dense air. This phenomenon is known as refraction.
Therefore, the correct answer is (A) The sound wave changes speed and direction, bending away from the denser air and towards less dense air.
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explain what role inductive reasoning has in the study of indicator species
Answers
What is a potential effect of rapid climate change on Earth?
Answers
Explanation:
Scientists have predicted that long-term effects of climate change will include a decrease in sea ice and an increase in permafrost thawing, an increase in heat waves and heavy precipitation, and decreased water resources in semi-arid regions.
in the splicing step of gene expression, ______ are spliced out, and ________ are stitched together.
Answers
In the splicing step of gene expression, introns are spliced out, and exons are stitched together.
What is gene expression?Gene expression refers to the process of protein synthesis that begins with a gene in DNA and finishes with a functional protein. The genetic code is translated to make protein during gene expression. Gene expression is a complex process that requires many different molecules, including RNA polymerases, transcription factors, and other regulatory proteins.
In eukaryotic cells, pre-mRNA is modified before it exits the nucleus. RNA splicing is a crucial aspect of pre-mRNA processing, in which non-coding introns are excised and exons are joined to produce mature mRNA molecules. The splicing process is carried out by a complex machinery consisting of small nuclear ribonucleoprotein particles (snRNPs).
The snRNPs in spliceosomes recognize introns and bring together the flanking exons for precise excision. Intron removal is followed by the ligation of exons, which results in the formation of a mature mRNA molecule that can be exported from the nucleus to the cytoplasm, where it can be translated into a functional protein.
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a structure that evolves in one context but becomes adapted for another function is an example of
Answers
A structure that evolves in one context but becomes adapted for another function is an example of Exaptations
Explain your answer.
An exaptation is a structure of an organism that originally evolved as a feature to provide adaptation to a certain condition, but which, once consolidated (for example, several million years later) begins to be used and perfected in pursuit of a new purpose, which, sometimes, is not related at all to its original function.
An example is the feathers of birds. Feathers are an exaptation becasue they were originated to maintain body temperature more efficiently.
However, feathers became later fundamental as a flying structure.
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deficiency symptoms of molybdenum in photosynthesis
Answers
Answer:
Molybdenum deficiency symptoms in most plants are associated with a build-up of nitrate in the affected plant part. This is a result of poor nitrate reductase activity. Symptoms include: pale leaves with interveinal and marginal chlorosis (yellowing) and necrosis (scald);
Identify the molecule that is not a compound.
H
H—Si - H
H
H
H
Reset
H
Next
N
H
010
I
Answers
Answer:
The " o=o" is not the compound
Explanation:
A compound is two or more different elements bonded together. O2 is just one element
A process of growth maintence and division
Answers
Answer:
In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. One cell gives rise to two genetically identical daughter cells during the process of mitosis. ...
Explanation:
hope this helps
While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. The neurology resident told Sally that neurons and their dendrites, which send and reccive signals, made up the nerves and that the information was transported only from the PNS to the CNS. The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS.
Answers
The statement that is true regarding the cellular structure of a neuron is; The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. Option A is correct.
This statement accurately describes the composition of nerves and the direction of information transmission. Neurons, which consist of a cell body, dendrites, and an axon, are the basic building blocks of the nervous system. Dendrites receive signals from other neurons, while the axon transmits signals to other neurons.
Nerves, on the other hand, are composed of bundled axons of neurons and are responsible for transmitting information between the peripheral nervous system (PNS) and the central nervous system (CNS). The information flow typically occurs from the PNS to the CNS.
Hence, A. is the correct option.
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--The given question is incomplete, the complete question is
"While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? A) The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. B) The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. C) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. D) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS."--
A homozygous recessive man has children with a heterozygous woman. 4. Give the genotype and phenotype of each parent. Genotype Phenotype Father Mother 5. Make a Punnett square of the cross described a
Answers
Genotype PhenotypeFather hh Homozygous recessive Mother Hh Heterozygous For the Punnett square of the cross described, the possible genotypes and phenotypes The following are the genotype and phenotype of each parent of a homozygous recessive man who has children with a heterozygous woman.
Genotype PhenotypeFather hh Homozygous recessive Mother Hh Heterozygous For the Punnett square of the cross described, the possible genotypes and phenotypes of their children can be calculated using the following steps:Step 1: Write the genotype of each parent along the top and left-hand side of the grid. Step 2: Place one allele from each parent in each box by drawing lines from the letters on the top to the letters on the left.
Step 3: Combine each pair of alleles to determine the genotype of the offspring in each box. Step 4: Determine the phenotype of each offspring based on their genotype.Based on the above information, the Punnett square of the cross between a homozygous recessive man and a heterozygous woman would be as shown below. From the Punnett square, it can be observed that the offspring would be 100% Hh (heterozygous). Therefore, their phenotype would be dominant (H).
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Name of process whi ch can increase the rate of dissolving waterr in salt
Answers
Agitation and stirring will increase the rate of dissolving water in salt.
What is agitation and stirring?Agitation:
A fluid is agitated when it is made to flow mechanically through a vessel in a certain pattern, such as a circulatory one. The process of agitating a mixture involves the movement of one or more of its constituent parts to enhance contact. A liquid's usual properties will change as a result of vigorous agitation, especially with water, which reduces the liquid's aggregation.
Stirring:
To stir is to continually or repeatedly move one's hand through something (such a liquid or another substance) in order to cool, mix, agitate, dissolve, etc. any or all of the component parts: to use a spoon to stir your coffee.
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i do not understand what Muller's rachet is (genetics)
Answers
In evolutionary genetics, Muller's rachet describes a process where deleterious (harmful) mutations accumulate because of the absence of recombination, so this happens when there is no sexual reproduction.
This happens because the offspring inherits the mutation of their parent, but is also subject to mutation, so they add up every generation.
Muller (the scientist that first described this phenomenon) suggested that this is why sexual reproduction is favored over asexual reproduction, and why other forms of recombination exist.
The drawing shows an apple falling to the ground. In which of the three positions does gravity act on the apple?
Answers
The drawing shows an apple falling to the ground. The gravitational force act on the apple 1, 2 and 3. Thus option D is correct.
what is Gravitational force ?
A gravitational force is defined as an attractive force which is exerted by a massive body on the massive body.
gravitational force is a force exerted by earth on other objects and can be represented as F=mg
F is the force of gravity, G is the gravitational constant of the universe and it is always the same number, M is the mass of one object, m is the mass of the other object
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Many types of plants produce fruit which is eaten by animals. The seeds of these plants are typically undigestible. Which of the following is an advantage for plants having undigestible seeds? It allows seeds to reside in the gut until conditions are appropriate for germination. It ensures that flowers of these plants will be pollinated. It allows the seeds to be dispersed into other areas. It provides a source of nutrients for the germinating seed.
Answers
The advantage for plants having undigestible seeds is that it allows seeds to reside in the gut until conditions are appropriate for germination.
Fruits are a source of nutrition for animals that consume them, and they are also a means of seed distribution for plants that produce them. Many types of plants generate fruit that is consumed by animals; nevertheless, the seeds of such plants are usually indigestible. As a result, the seeds can be dispersed into new areas by animals that eat the fruit.
However, having undigestible seeds provides a distinct benefit to plants: it allows seeds to reside in the gut until conditions are appropriate for germination, which aids in seed growth and germination.
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Adaptative features of a matured fresh eggs of cat fish
Answers
A big, nutrient-rich yolk is a characteristic adaptation of a mature catfish egg. Like many other fish species, catfish also lay eggs that are frequently demersal, or sheltered in a nest or placed on a substrate.
The mature egg of fish is surrounded by an acellular coat conventionally called the chorion. In Carassius auratus, three main layers can be recognized at the electron microscopic level, and we have termed them ch1, ch2, and ch3 starting from the outer side to the inner side close to the egg plasma membrane.
Fish eggs immediately upon fertilization are spherical in shape with various components, including maternal mRNAs, numerous organelles, yolk inclusions, proteins, as well as lipid droplets and pigments intermingled in the egg cytoplasm (Lubzens et al., 2010).
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Q- Adaptive feature of a matured fresh egg of a catfish.
Which statement best describes an environmental consequence of unsealed landfills?
A. Materials in landfills undergo decomposition for hundreds of years.
B. Heavy metals are released as leachate into surrounding waterways.
C. Long-term exposure to mercury and lead in landfills can cause cancers.
D. Landfills can produce carbon dioxide that leak into the atmosphere.
Answers
Landfills can produce CO2 that leaks into the atmosphere.
The contaminants in landfill leachate build up and have a negative impact on the ecology and food chains, which may cause genotoxicity, acute toxicity, and cancer in humans.
What about landfills?A method of rubbish disposal where waste is buried under layers of soil to raise low-lying terrain.Solid waste is disposed of in well-managed, well-engineered landfills nowadays.So as to assure compliance with federal rules, landfills are strategically placed, planned, managed, and monitored.Additionally, they're made to safeguard the environment against toxins that might be found in the waste stream.While "whole filled with rubbish" might be your first impression when you hear the phrase, landfills are frequently just a way of stabilizing the ground for construction.Garbage dumps are sometimes mentioned as landfills, even when they are not physical pits that are filled and covered.A big pollutant source with a host of unfavorable consequences.In landfills, trash decomposes very slowly and poses an issue for future generations.Toxins, leachate, and greenhouse emissions from landfills are the three primary issues.Landfills may emit offensive odors, and waste gas may seep through the bottom and gather in surrounding structures.Ammonia, sulfides, methane, and CO2 are the landfill gasses that cause the most worry.The majority of landfill smells are caused by ammonia and hydrogen sulfide.Learn more about landfills here:
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(carbohydrates, lipids, proteins, and nucleic acids). How does form and function
relate to enzymes?
Answers
The goal of a statement of purpose is:
Answers
Answer:
A statement of purpose's goal is to convince someone that you should be admitted to the program or be awarded a position.
Answer:
A statement of purpose's goal is to convince someone that you should be admitted to the program or be awarded a position.
a. How does the DIY DNA extraction compare to an extraction using a kit? Why?
b. How can you tell?
Answers
a. DIY DNA extraction methods typically use household ingredients and may lack specialized reagents for optimal yield, purity, and efficiency compared to extraction kits designed with standardized protocols.
b. Differences can be assessed through factors such as protocol complexity, DNA yield, purity assessment, and reproducibility of results between DIY and kit-based extractions.
a. The DIY DNA extraction and an extraction using a kit can differ in several aspects:
Ease of Use: DIY DNA extraction methods often utilize household ingredients and materials, making them simpler and more accessible for amateur scientists or educational purposes. Kits, on the other hand, are specifically designed with pre-measured reagents and detailed protocols, providing a standardized and user-friendly approach.
Efficiency and Yield: DNA extraction kits typically incorporate optimized protocols and specialized reagents that ensure higher efficiency and yield of extracted DNA. DIY methods may not always achieve the same level of efficiency, leading to lower DNA recovery or potential contamination.
Purity and Quality: DNA extraction kits generally include steps and reagents to remove contaminants (such as proteins and RNA) and ensure higher purity of the extracted DNA. DIY methods may lack these purification steps, resulting in impurities or degraded DNA.
b. A few indicators can help determine the differences between DIY DNA extraction and kit-based extractions:
Protocol Complexity: Comparing the step-by-step procedures of DIY methods and kit-based methods can reveal differences in complexity and the presence of additional purification or quality control steps in kits.
DNA Yield: Quantifying the yield of extracted DNA can provide insights into the efficiency of the extraction method. If the yield from a DIY extraction is consistently lower compared to a kit-based extraction, it suggests that the kit-based method may be more efficient.
Purity Assessment: Evaluating the purity of the extracted DNA can be done through techniques such as spectrophotometry or gel electrophoresis. If the DNA extracted using a kit shows less contamination or degradation than the DIY-extracted DNA, it indicates better quality control in the kit-based method.
Reproducibility and Consistency: Performing multiple extractions using both the DIY method and a kit and comparing the results for consistency and reproducibility can also indicate differences in performance and reliability.
It's important to note that DIY DNA extraction methods can be useful for educational purposes or preliminary experiments, but for more precise and standardized results, DNA extraction kits developed by reputable manufacturers are generally recommended.
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1. Tube that extends into the abdominal cavity and carries the sperm from the testes to the urethra for ejaculation __________
2. Organ through which both semen and urine pass ____________
3. Merged from the seminferous tubules, a comma shaped structure where the sperm mature __________
4. Produces about 30% of the seminal fluid in the ejaculated semen __________
Answers
Vas Deferens, Urethra, Epididymis, Prostate Gland
Here are the answers including the terms you mentioned:
1. Tube that extends into the abdominal cavity and carries the sperm from the testes to the urethra for ejaculation: Vas Deferens
2. Organ through which both semen and urine pass: Urethra
3. Merged from the seminiferous tubules, a comma-shaped structure where the sperm mature: Epididymis
4. Produces about 30% of the seminal fluid in the ejaculated semen: Prostate Gland
Your answer: Vas Deferens, Urethra, Epididymis, Prostate Gland
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Mt. Paricutin erupts explosively. Little lava helps build the cinder cone. It is almost all ash and rock. What type of magma does it most likely contain?
1) Basaltic
2) Andesitic
3)Rhyolitic
40 Pyroclastic
Answers
1) Panspermia is a hypothesis that states that life on Earth may have been purposefully or accidentally seeded by life from other planets. Which piece of evidence below would support this theory? Select ALL that apply.
A) The presence of intense heat on other distant planets
B) The presence of carbon-based molecules on meteors that strike Earth's surface
The fact that extremophilic bacteria can grow in harsh conditions even on Earth
D) The fact that photosynthesis is driven by solar energy and there are more stars across the galaxy
E) The fact that some spores from fungi or endospores from bacteria can lay formant for long periods of time
Answers
One of the events that could give credence to the panspermia hypothesis would be the presence of carbon-based molecules on meteors that strike the earth's surface.
Evidence of extraterrestrial livesAll biomolecules of life are carbon-based. Examples of these molecules include carbohydrates, proteins, ribonucleic acids, etc.
In order for life to exist in a place, carbon must be abundant.
Thus, the presence of carbon-based molecules on meteors from another planet that hit the surface of the earth may be evidence that life exists on another planet.
This can be used as evidence that life on earth came from extraterrestrial sources.
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what doesn’t shape an areas climate
Answers
The size of the area does not shape an area's climate.
What do you mean by climate?
Climate is the average long-term weather conditions of a region, including average temperatures, precipitation, humidity, and other factors. It is determined by a variety of factors, such as latitude, altitude, and proximity to bodies of water. Climate is a major factor in the distribution of plants and animals, and can affect human activities such as agriculture and industry.
Climate is determined by many factors, such as latitude, altitude, ocean currents, and atmospheric pressure. The size of an area does not affect these factors, and therefore does not shape the climate. The climate of an area is determined by the amount of sunlight and rain it receives, which is determined by the aforementioned factors rather than the size of the area.
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Silicate minerals are composed of ________.
A.
silicon-carbon compounds
B.
silicon-hydrogen compounds
C.
silicon-oxygen compounds
D.
only silicon atoms
Answers
How are cellular respiration and photosynthesis almost opposite processes?
a. Photosynthesis releasės energy, and cellular respiration stores energy.
b. Photosynthesis removes carbon dioxide from the atmosphere, and cellular
respiration puts it back.
C. Photosynthesis removes oxygen from the atmosphere, and cellular
respiration puts it back.
O d. all of the above
Answers
Answer:
I'm pretty sure it is A. I'm sorry if I am wrong
Explanation:
Which of the following best describes the basic structure of the plasma membrane of a cell? lipid bilayer, glycocalyx, phospholipids, glycoproteins
Answers
The basic structure of the plasma membrane of a cell is a lipid bilayer composed of phospholipids, option C is correct.
The phospholipids have hydrophilic heads that face the aqueous extracellular and intracellular environments, and hydrophobic tails that face each other within the membrane. The lipid bilayer also contains cholesterol and glycolipids, which contribute to the membrane's fluidity and stability.
The membrane also contains various proteins, including integral membrane proteins that span the entire bilayer, and peripheral membrane proteins that are bound to one side of the bilayer. The outer surface of the membrane is coated with a glycocalyx, which is composed of glycolipids and glycoproteins, and serves as a protective and recognition layer, option C is correct.
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The complete question is:
Which of the following best describes the basic structure of the plasma membrane of a cell?
A. lipid bilayer,
B. glycocalyx
C. phospholipids
D. glycoproteins