Ones with seeds have certain advantages over plants without seeds. For instance, when a seed germinates, the budding plant utilises the food that is stored there. There is no stored nourishment in the spores of seedless plants to aid in the growth of a new plant. The ability of animals to disperse seeds is another benefit of seed plants.
An embryo starts to develop throughout the process of germination into a new plant known as a seedling. Because of the aforementioned factors, seeds had a better probability of reproducing than seedless plants (spores).
Genetic material from both parents is present in seeds that are created by fertilisation. As a result, none of the parent plants' and the offspring are genetically similar. They may be able to survive if the environment changes thanks to their genetic variety. Pollination, the act of sexual reproduction in flowering plants, is how it happens.
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paranasal sinuses a. lighten the skull b. act as resonance chambers for sound c. produces mucus d. all of the above
paranasal sinuses are paired and symmetrical, air-filled cavities situated around the nasal cavity. the correct option is (D).
They are found in three bones of the neurocranium (braincase), the frontal bone, ethmoid bone, and sphenoid bone all of the above. The function of the paranasal sinuses is to protect the organism Which is done mostly by humidifying the air which is inhaled and facilitating the immune response of the respiratory system.
Also, the sinuses are generally air-filled spaces that decrease the weight of the head and impact the resonance of the human voice.
The nares and anterior portion of the nasal cavities are generally lined with the mucous membranes and it contains sebaceous glands and hair follicles, this serve to prevent the passage of large debris ( dirt) through the nasal cavity.
Types - Frontal sinuses
Ethmoidal cells (sinuses)
Maxillary sinuses
Sphenoidal sinuses
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Using the mRNA codons, identify the amino acids. (1 POINT)
Answer:
1. AUG- Methionine
2.CUG-Serine
3.ACC-Threonine
4. UAG-Amber
Explanation:
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how are phenolics used in microbial control? multiple select question. added to products household disinfection clinical disinfection routine skin antisepsis
Phenolics control microbes by :
1) Disrupting the cell membrane
2) Denaturing metabolic enzymes
3) Disrupting the cell wall
Phenolic compounds are a group of small molecules characterised by their structures having at least one phenol unit. Based on their chemical structures, phenolic compounds can be divided into exclusive subgroups, along with phenolic acids, flavonoids, tannins, coumarins, lignans, quinones, stilbens, and curcuminoids.
Phenolics play important roles in plant development, specifically in lignin and pigment biosynthesis. In addition they provide structural integrity and scaffolding assist to flora.
Phenolics have right chemical resistance and are immune to alcohols, esters, ketones, ethers, chlorinated hydrocarbons, benzene, mineral oils, fats, and oils.
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which human activity is responsible for overloading the nitrogen and phosphorus cycles? overhunting of wild game species clearcutting of forests for lumber runoff of fertilizer from agricultural areas increased uptake of water in urban areas
The human activity which is responsible for overloading the nitrogen and phosphorus cycles is runoff of fertilizer from agricultural areas.
What is fertilizer?In general, fertilizers are described as "any item, organic or inorganic, natural or manufactured, which supplies one or more of the chemical elements essential for the growth of the plant." The three fundamental plant nutrients—nitrogen, phosphorus, and potassium—are included in the majority of fertilizers used in agriculture.
What is the use of fertilizer in agriculture?Fertilizers are supplementary materials that are given to the crops to boost productivity. Farmers utilize these on a regular basis to boost crop productivity. Fertilizers give plants the nutrients potassium, phosphorus, and nitrogen so they can grow larger, more quickly, and generate more food. Every living thing on Earth needs nutrients to develop, but nitrogen in particular is crucial.
Thus from the above conclusion we can say that the human activity which is responsible for overloading the nitrogen and phosphorus cycles is runoff of fertilizer from agricultural areas.
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describe the scale of the infertility problem in ontario
It has been shown that the scale of infertility in Ontario has significantly increased since 16 percent of couples may experience this problem when this value was only 8 percent in less than four decades.
What do infertility problems mean?The expression infertility problem makes a reference to all types of health problems associated with the fertilization process such as for example, the presence of toxicants in the water that may alter sperm count number under the microscope.
It has been shown that infertility problems have increased considerably in several cities in Canada, where the rate double in the last forty (40) years.
Causes of infertility include:
Tobacco consumptionAlcohol Ovulation disorders in womenOverweight and or underweightOverexerciseTherefore, with this data, we can see that infertility problems have dramatically increased in some cities of Canada including Ontario, thereby an integral view of the problem is required to solve this issue.
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bile acids (part of bile) work as emulsifiers to aid in fat digestion. after fat digestion in the small intestine is complete, what happens to most of these bile acids?
After the fat has been digested, fatty acids are passed through the lymph system and then pass throughout the body.
Bile may be a liquid that's made and discharged by the liver and put away within the gallbladder. Bile makes a difference in digestion. It breaks down fats into fatty acids, which can be taken into the body by the stomach-related tract. Bile contains Mostly cholesterol Bile acids Bilirubin, Water Body salts such as potassium and sodium, Copper, and other metals. After the fat has been processed, fatty acids are passed through the lymph system and after that through the body through your bloodstream to be utilized or put away for energy, development, and cell repair.
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1. Explain why DNP is effective at preventing the production of ATP in cellular
respiration and photosynthesis. Specify the relevant reactions in
photosynthesis and cellular respiration.Reference any sources that you consulted in composing your response.
2. Given the number of deaths caused by DNP, should it still be allowed to be sold as a commercial herbicide? Support your answer by including the risks and benefits of DNP.
ANSWER BOTH PLEASE THANK YOU
DNP functions as a protonophore, allowing protons to pass through the inner mitochondrial membrane and bypass ATP synthase. This reduces the efficiency of ATP energy production.
What is DNP?2,4-dintrophenol (DNP) aids in the movement of protons across cell membranes, resulting in a decrease in ATP production (adenosine triphosphate, the molecule that transports energy within cells).
DNP acts as a protonophore, allowing protons to bypass ATP synthase by passing through the inner mitochondrial membrane. This reduces the efficiency with which ATP energy is produced.
As a result, the proton gradient cannot form across the inner mitochondrial membrane because H+ (hydrogen ion) pumping is halted. As a result, the pH across the inner membrane of mitochondria will decrease.
DNP is toxic to humans and can result in death as well as serious physical side effects. In the United Kingdom, selling DNP for human consumption is a crime.
Thus, it is dangerous to use DNP.
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how do transfer rnas (trnas) bring the correct amino acid to the growing polypeptide? answer unselected by complementary base pairing between the trna anticodon and the messenger (mrna) codon unselected by complementary base pairing with the gene in the nucleus unselected none of the listed responses is correct. unselected by base-pairing with the ribosomal rna (rrna)
Transfer rRNA bring the correct amino acid to the growing polypeptide By complementary base pairing between the tRNA anticodon and the messenger (mRNA) codon.
Complementary base pairing evolves binding of DNA to complementary base pairs, guanine always binds to cytosine and adenine always binds to thymine. But in RNA replaces thymine pairs with different pyrimidine base called uracil .
Complementary base pairing molecule allows the base pairs to be arranged in the more energetically favorable way. These base pairing makes double-helical structure of DNA. It is also important in replication of DNA as it allows semiconservative replication.
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how far each of the following statements is correct with explanation:
Spores of fern plant are produced due to mitosis
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what is the effect of types of artificial sweeteners on co2 production from alcohol fermentation of splenda and sweet n' lo by yeast
Using theories of sweeteners, we find that C0₂ production increases when artificial sweeteners is added from alcohol fermentation of splenda and sweet 'n' lo by yeast.
Sweeteners are the ingredients that sweeten like sugar (sucrose), but may be low-calorie of synthetic substitutes. Under EU legislation, food products containing the sweetener or sweeteners must include the statement ‘with sweeteners’ on label accompanying the name of the food product. The relationship between sweeteners and negative health effects which has been studied for many years by many of different regulatory agencies, and after rigorous safety assessments and establishment of safe levels of use, certain sweeteners have been approved as the food additives.
Hence, on addition of different types of artificial sweeteners, CO₂ production increases from alcohol fermentation of splenda and sweet n lo by yeast.
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urjnun'uemb anyone intrested to come for 21 questions?
Answer:
what is that? for biology?
How can the increase demand on water affect water quality
Answer: As warmer temperatures increase the demand for water, the amount of freshwater available may decline and increase competition for water resources in some areas.
Answer:
As the demand for water increases, People will first of all opt for clean water, for better health, e. t.c. But as this demand increases, the source of clean water decreases affecting the purity of water
an ecologist recorded 12 white-tailed deer per square kilometer in one location and 200 deer per square kilometer in another location. what was the ecologist comparing?
The ecologist was contrasting density.
What variables influence population change?Demographers often concentrate on four key variables when attempting to predict changes in population size: fertility rates, death rates (life expectancy), beginning age distribution of the population (whether it is relatively elderly or young to begin with), and migration.
Which of the following can contribute to population regulation that is density dependent?Competition and predation, which affect birth and mortality rates, can have an impact on density-dependent regulation. Abiotic elements and environmental factors, i.e., extreme weather and conditions like fire, can have an impact on density-independent regulation.
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These can occur when electricity ignites explosive gases in the air, such as pure oxygen, methane, or natural gas.
Answer:
These can occur when electricity ignites explosive gases in the air, such as pure oxygen, methane, or natural gas;Explosions
Explanation:
No explanation really needed hence the fact it says when electricity ignites explosive gases in the air.
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What would happen if Earth absorbed all of the heat from the sun? (1 point)
Responses
Earth would lose all of its heat.
Earth would lose all of its heat.
Earth would eventually stop receiving heat.
Earth would eventually stop receiving heat.
Earth would become too hot.
Earth would become too hot.
Earth would become too cold.
The two muscles that insert on the fifth phalanx or on the fifth metatarsal are the __________.
The two muscles that insert on the fifth phalanx or on the fifth metatarsal are the extensor digitorum longus and fibularis tertius.
Where is extensor digitorum longus located ?Extensor digitorum longus is located lateral to m. tibialis anterior in its proximal part and extensor hallucis longus distally. Its origin is on the tibia and interosseous membrane, inserts into the medial and distal phalanxes II-V digitorum, is innervated by fibular profundus. Which functions for dorsiflexion and abduction.The innervation of the ankle comes from the lumbar plexus and the sacral plexus. The muscle innervation that controls the movement of the ankle comes from the tibial nerve, deep fibular nerve and superficial fibular nerve. While the sensory nerves come from the sural nerve and saphenus.Learn about fifth phalanx here: brainly.com/question/9486955
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
B.)consumer
Explanation:
Because it eats up the leaf right it consumes it .easy peasy
Answer:
b) Consumer
Explanation:
The organisms that gets its energy by eating other organism is called as consumers. Hence, option (b) is correct.
Primary productivity is an indicator of how much matter and energy is
available in the producers within a given area. With a partner, discuss the patterns
you see in the map. Why do you think primary productivity is important for the
health of an ecosystem?
The rate at which energy is added to the bodies of a group of animals, known as primary producers, in the form of biomass, is referred to as primary productivity.
What is measured by the main productivity?By monitoring the output of oxygen or the intake of carbon dioxide, primary productivity is typically calculated. The standard unit of measurement for production rates is grams of organic carbon per unit area per unit time.
What is energy used in primary production?Any extraction of energy products in a usable form from natural sources is considered primary energy production. This happens either during the extraction of natural resources (for instance, in coal mines, crude oil fields, or hydroelectric power plants) or during the production of biofuels.
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Mold is made up of many fungi cells. Mold would be considered what type of organism?.
Mold is considered a multicellular organism, made up of many fungi cells. Thus the correct answer is option (C) Multicellular Organism.
Multicellular organisms are made up of many cells thus it is different from unicellular organisms.
Some organisms, such as slime molds and social amoebae of the genus Dictyostelium, have both uni- and multicellular structures. These include every type of animal, as well as most fungi, terrestrial plants, and algae.
Colonies of identical individuals that come together to form organisms are called colonies. However, it can be difficult to distinguish between "colonial protists" and "real multicellular organisms" because the terms are interchangeable (colonial protists are occasionally referred to as "pluricellular").
A fungus with many cells is called mold. It is made up of hyphal filaments, which can group together to form mycelia. A mycelium is a collection of mycelia, and these structures make up the thallus, or body, of the mold.
The complete question is:
Mold is made up of many fungi cells. Mold would be considered what type of organism?
A. unicellular
B. prokaryotic
C. multicellular
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hich statement describes the environmental impact of developing countries? individuals in these countries have to degrade the environment to meet basic needs. these countries leave the largest ecological footprint. individuals in these countries benefit from efficient food distribution systems. these countries rely on technology to improve
The statement which describes the environmental impact of developing countries accurately is : Individuals in these countries have to degrade the environment to meet basic needs.
Pollution is one of several environmental issues confronting the globe today. In developing countries, the effects of pollution are more severe, causing millions of people each year to suffer from poor health, pass away, or become disabled. Developed nations have the means and tools to fight pollution.
The high levels of pollution in developing countries are caused by a combination of reasons including low income levels, high costs of improvement, political problems that hinder effective governance, and market failures.
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what enables electrical impulses to travel in a continuous cell-to-cell fashion in myocardial cells?
Only intercalated disks, thickened portions of the sarcolemma, enable electrical impulses to spread quickly in a continuous cell-to-cell fashion.
Myocardial conduction cells initiate and propagate the action potential that travels throughout the heart and triggers the contraction of blood . myocardial contractile cells constitute the bulk of the cells in the atrial and ventricles .
In side heart ,cardiac muscle tissue or myocardium , contains many cells that expand and contract in response to electrical impulses from the nervous system. These cardiac cells work in a manner that they produce the rhythmic and wavy contractions that is termed as heartbeat.
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why did kohler and lipton start by repeating a previous experiment? they wanted to make sure they could reproduce the results in their own laboratory. the more times the same result is obtained, the more confidence a researcher has in the results. they wanted to confirm that chicken cells behave similarly to mouse cells. they wanted a baseline for comparison to further studies involving purified platelet proteins. all of the answer options are correct.
To make sure that they could reproduce the results in their own laboratory, Kohler and Lipton started by repeating a previous experiment.
The experimental research is a methodical and scientific approach to study where the researcher manipulates one or more variables, controls the change in other variables, and assesses the change. When repeating a previous experiment, Kohler and Lipton may be trying to reproduce the results already known in their own laboratory. If the results were produced same, they would be more confident about the experiment. Or if the result was not the same, they would have derived a new explanation for the scientific hypothesis.
A hypothesis is often accepted as true or rejected as erroneous based on the outcomes of scientific evaluation. Even theories that have been proven accurate by scientific evidence are, however, subject to later rejection when new data becomes available since a hypothesis is intrinsically falsifiable.
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Charged ions are traveling through a cell membrane with the concentration gradient. Which process is represented here?.
Charged ions are traveling through a cell membrane with the concentration gradient this is by Diffusion.
Diffusion is the transfer of a substance's individual molecules from a region of higher concentration to a region of lower concentration over a semipermeable barrier. The type of interaction between the medium and the substance affects the rate of diffusion.
Simple diffusion is one type of diffusion that can be aided by another molecule.
Simple Diffusion is the movement of molecules along their concentration gradient in the absence of any other molecules' direct participation. It may entail the movement of a particle over a membrane or the dispersion of a substance through a medium.Diffusion must take place in the presence of another molecule (the facilitator) in a process known as facilitated diffusion. Large or polar molecules must be transported by facilitated diffusion.To know more about Diffusion visit the link:
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what environmental variables might affect the net rate of photosynthesis? list at least two. why do you think they would affect it? how do you predict they would affect it? 3. what features or variables of the plant leaves might affect the net rate of photosynthesis? how and why? 4. could the way you perform the procedure affect the outcome? of the outcome changes, does it mean the net rate of photosynthesis has changed? why do you think that?
Photosynthesis is one of the most process in the plants and there are large number of factors like sunlight, oxygen, CO2, water etc. that affect the rate of photosynthesis.
1. the plant's exposure to temperature, carbon dioxide levels, and light levels. Because photons of light energy are required to excite the electrons in the thylakoid membrane, these parameters will have an impact on the photosynthesis process. In the absence of sufficient CO2, Rubisco will adhere O2 to RuBP rather than CO2.
3. The amount of water in the plant is a variable that might have an impact on the net rate of photosynthesis. The stomata are closed in plants with high water content, whereas they are open in plants with low water content. The stomata enable carbon dioxide to enter plant cells, ultimately performing photosynthesis.
4. Yes, while using a different kind of plant during the performance, the technique could modify the final result. The rate of photosynthesis may have sped up or slowed down if the leaves didn't drop to the bottom after being placed inside the container. I think this because, in contrast to the leaves that had sunk, the leaves that were suspended in the middle of the container had an advantage when ascending to the top.
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which situation would be the most likely result of a mutation in a eukaryotic organism that causes it to produce less p21 protein than normal?
Mutation in a eukaryotic organism is most likely to cause destruction of cells with radiation-induced DNA which leads to production of less p21 protein.
Mutation refers to the process of producing diversity in characteristics by altering the genetic sequence. The alteration may include deleting, inserting or simple rearranging of chromosomes.
Eukaryotic organisms are organism that have their nucleus clearly defined and protected by a nuclear membrane.
When these types of organisms go through the process of mutation, the DNA of cells in which radiation is induced get damaged, this destruction is continued throughout the cell cycle and damaged DNA is not repaired. This causes the division of cells to be slower than usual because now the organism will produce lesser p21 protein.
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An organism formed from sexual reproduction starts out as a single cell called a zygote. In multicellular organisms, this zygote divides by mitosis to make identical copies of itself.
Observe the micrograph of a zygote below. How many times has it divided?
Since an organism formed from sexual reproduction starts out as a single cell called a zygote, then the zygote divided by mitosis twice in order to generate four cells as image below.
What is mitosis cell division?Mitosis cell division is the cellular process by which multicellular organisms generate body cells, which involve the division of a parental cell to generate two daughter cells that are genetically identical to the parental cell.
Therefore, with this data, we can see that mitosis is a cell division process that generates two cells for each division of a parental cell.
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nasopharyngeal lymphatic tissue: a.adenoids b.paranasal sinuses c.mucosa d.epiglottis e.visceral pleura
The correct answer is a) Adenoids
They are present high up ion the throat behind nose. Adenoid glands are a part of the immune system that help in fighting the body against pathological bacteria and viruses that may cause infection. The adenoids are removed during an adenoidectomy if they have grown swollen or enlarged due to an infection or allergies. The lymphatic system fights infection and maintain body fluids in balance.
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binding of the signaling molecule epinephrine to its receptor results in * 10 points a) increased concentrations of cyclic amp in the cytoplasm. b) lower blood glucose levels. c) activation of a steroid hormone receptor inside muscle cells. d) inactivation of the enzyme glycogen phosphorylase.
The binding of the signaling molecule epinephrine to its receptor results in inactivation of the enzyme glycogen phosphorylase
What are signaling molecules?
As a broad term for molecules that particularly attach to other molecules, ligand is frequently used to refer to signaling molecules (such as receptors). The message sent by a ligand is frequently transmitted inside the cell through a series of chemical messengers.
What is the role of epinephrine as a signaling molecule?
Epinephrine is an important cell signaling molecule in the fight or flight response.Also known as adrenaline, epinephrine is an efficient messenger that signals many cell types throughout the body with many effects. In the lungs, epinephrine binds to receptors on smooth muscle cells wrapped around the bronchioles.Through the activation of PKA, cAMP, and 2-adrenergic receptors, epinephrine induces the phosphorylation of GS at sites 2, 1a, and 1b (5, 36). Additionally, PKA upregulates GS phosphorylation via phosphorylating RGL, a glycogen-targeting regulatory component of protein phosphatase-1 (PP1).Hence, binding of epinephrine to the receptor results in the inactivation of enzyme glycogen phosphorylase
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Which of the following statements about how fruit flies can develop an eye in the middle of a leg is true? (a) When the Ey gene is expressed in adult leg cells, these cells de-differentiate and become eye cells. (b) The Ey gene encodes a transcription regulator that is the only transcription regulator used to produce a fruit-fly eye. (c) When the Ey gene is introduced into cells that would normally give rise to a leg, the transcription regulators used to control its expression in the leg are different from those that are normally used to control Ey expression in the eye. (d) All the eye cells found in the adult leg are a single cell type and have identical characteristics
Fruit flies develop eye in the middle of a leg (c) When Ey gene is introduced into cells that would normally give rise to a leg, transcription regulators used to control its expression in leg are different from that of Ey expression in the eye.
What is transcription?Process of copying a segment of DNA into RNA is called transcription. The segments of DNA transcribed in RNA molecules that encode proteins produce mRNA. Other segments of DNA are copied in RNA molecules which is called non-coding RNAs. mRNA comprises of only 1–3% of the total RNA samples.
The goal of transcription is to make RNA copy of a DNA sequence of gene and for protein-coding gene, RNA transcript carries information needed to build a polypeptide.
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in order to keep a resting membrane potential, the active transport of the sodium and potassium pump must function to keep:
The active transport of the sodium and potassium pump must work to maintain: A high concentration of sodium outside the cell and a high concentration of potassium inside the cytosol in order to maintain a resting membrane potential.
Active transport in cellular biology refers to the movement of molecules or ions across a cell membrane against the concentration gradient from a location of lower concentration to a region of higher concentration. Cellular energy is needed for active transport to achieve this movement.
The electrical potential differential across the plasma membrane of a cell during its non-excited condition is referred to as the resting membrane potential of the cell. The value of the electrical potential difference inside a cell compared to the extracellular environment is often used to indicate the difference across a cell membrane.
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