PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:

(1) The variable that should be changed is the temperature.

(2) The variable that should be measured is the germination rate of the seeds.

(3) The 3 important variables that should be kept constant are the type of seeds, the amount of water, and the amount of light. In order to isolate the effect of temperature on seed germination, it is important to keep these other variables constant so that they do not affect the results of the experiment.

The following statements are true for the production of Angelman syndrome:

2. Children of affected females have a 50% chance.

3. Meiotic nondisjunction of a normal paternal chromosome 15 accompanied by loss of a normal maternal chromosome 15

6. Deletion of the maternal gene copy

The mutated or missing maternal copy of a portion of chromosome 15 causes Angelman syndrome. Most of the time, it is because of the gene UBE3A, which is on chromosome 15 at the 15q11 to 15q13 locus. It encodes the ubiquitin protein, which is necessary for the electron transport chain and various functions of the cell membrane.

In most cases, this father-inherited gene is deactivated in the cortex, thalamus, and hippocampus of the brain. In these regions, the only source of genetic information for ubiquitin synthesis is the maternal gene. Therefore, neurological symptoms result from any mutation or deletion of this gene or a portion of chromosome 15 in the maternal gamete. The offspring are unaffected by mutations in the paternal gamete.

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Result of F1 cross:

Genotypes of F2 offspring would be 1 TTRR, 2 TTRW, 2 TtRR, 4 TtRW, 1 TTWW, 2 TtWW, 1 ttRR, 2 ttRW, and 1 ttWW

The phenotypes of F2 offspring would be tall and red-flowered, tall and white-flowered, tall and pink-flowered, short and red-flowered, short and white-flowered, and short and pink-flowered.

The cross is between two TtRW plants. The height (Tt) exhibits simple dominance/recessiveness while the color (RW) exhibits incomplete dominance.

TtRW gametes: TR, TW, tR, and tW

Crossing two TtRW:

        TtRW    x    TtRW

Offspring genotype and phenotype

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Answer:

completely remove or get rid of (something)

Answer:

the act of considering and rejecting each possible choice until only one is left or removing soming. for example in squid games everyone got killed/eliminated at the end but ONLY ONE won.

Answer:

This are the master control genes.

A. master control genes

How they work?

Thus, option A is correct.

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Answer:

Of all the energy that does reach Earth, slightly less than 34 percent is reflected back to space by clouds. The Earth itself reflects another 66 percent back to space. Less than one percent of the total energy that reaches Earth is used by plants for photosynthesis.

Explanation:

Answer:

YOU SAID 20 POINTS AN DYOU GIVEN ME 5 HUN NO THANK YOU BYE

Explanation:

ANSWER;20

Based on the theory of island biogeography, the statement that is most likely true about small islands when compared to large islands is that the rate of immigration is lower for small islands than for large islands.

Island theory of biogeography explains differences in species diversity based on island size (for example, large islands tend to have more of a given species category than small islands). This means that the number of species found on an island will be determined by the area of ​​the island.

Island biogeography theory says that small and distant islands support fewer species (types) than large islands close to the mainland. Island occupancy will be a balance of two things:

The question is multiple choice:

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Answer: A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.

Explanation:

Answer:

A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.

Explanation: got it on ed :)

Answer:

This can help the group to avoid danger and increase their chances of survival. While giving a warning call may put the individual squirrel at risk, the benefits of warning the rest of the group can outweigh this cost. Additionally, some research has suggested that animals that give warning calls are less likely to be targeted by predators, as the calls can alert the predator to the presence of the group and make it more difficult for the predator to catch any individual member of the group. Overall, giving warning calls can be an effective strategy for increasing the survival chances of the group as a whole.

Answer:

A) True

Explanation:

Cytokinesis can be regarded as a physical process which brings about cell division, that enables division of cytoplasm of parental cell and turn it two daughter cells. It can take place with both mitosis and meiosis concurrently which are nuclear division that occurs in animal cells. Cytokinesis In animal cells can be achieved as a result of of formation of cleavage furrow by a contractile ring of microtubules of the cell, which brings about division of cell membrane to half.

The microtubules which is utilized during cytokinesis are ones that are been generated at early stages of division and they have a part to play in the restructuring of the new cell

Answer:

Morrison Foredeep

Explanation:

Morrison Foredeep is a swampy lowland formed due to filling of Sundance Sea  with sediments during Jurassic period. Series of sedimentary rocks deposited during the Jurassic Period in the western North America, from Montana to New Mexico. Morrison Formation is famous for the presence of  dinosaur fossils, which have been collected since 1877 about more than a century ago beginning with a find near the town of Morrison, Colorado.

Answer:

D

Explanation: Biospheres

The basic elements of the nervous system are called neurons (Option C).

The neuron cells of the nervous system are the most important cells of this organ system which are responsible for receiving and sending messages to the brain and thus transducing the signals from the surrounding environment

These cells (the neuron cells of the nervous system) are also known as nerve cells due to their relative importance in this organ system and s they receive sensory signals from the surrounding conditions and also motor executive functions to the muscle cells.

Therefore, with this data, we can see that the neuron cells of the nervous system are the most important cells of the nervous system whose main function is to transmit messages from the surrounding input environment to functions that are processed into the brain.

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Basidiospore, Basidium, Ascus are the structures that are part of the sexual life cycle of Basidiomycota.

Basidiomycota are a group of fungi that reproduce sexually through a process called basidiomycetous reproduction. In this process, the fungi produce special reproductive structures called basidia, which are located on the surface of the fruiting body (also known as the basidiocarp). The basidia contain special cells called basidiospores, which are released when the basidia mature and burst. The basidiospores are then carried away by wind or other means and can germinate to form new fungal cells. The process of basidiomycetous reproduction also involves the formation of asci, which are special cells that contain ascospores. These ascospores are produced through meiosis and can give rise to new fungal cells when they germinate. The structures listed above that are NOT part of the sexual life cycle of Basidiomycota include conidia, conidiospores, zygospores, and rhizopus sporangium, which are all involved in asexual reproduction.

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Answer: 864 yellow 288 green

Explanation:

Catabolism: The breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy; destructive metabolism.

Anabolism: the synthesis of complex molecules in living organisms from simpler ones together with the storage of energy; constructive metabolism.

Metabolism: Metabolism is the process by which the body changes food and drink into energy. During this process, calories in food and drinks mix with oxygen to make the energy the body needs. Even at rest, a body needs energy for all it does.

Glucose: a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.

Glycolysis: Glycolysis is the first step in the breakdown of glucose to extract energy for cellular metabolism. Glycolysis consists of an energy-requiring phase followed by an energy-releasing phase.

Glycogen: Glycogen is the stored form of glucose that's made up of many connected glucose molecules.

Glycogenesis: The formation of glycogen from sugar.

Glycogenolysis: Glycogenolysis is the biochemical pathway in which glycogen breaks down into glucose-1-phosphate and glucose. The reaction takes place in the hepatocytes and the myocytes. The process is under the regulation of two key enzymes: phosphorylase kinase and glycogen phosphorylase.

Gluconeogenesis: Gluconeogenesis is a process that transforms non-carbohydrate substrates (such as lactate, amino acids, and glycerol) into glucose.

Lipolysis: the breakdown of fats and other lipids by hydrolysis to release fatty acids.

Lipogenesis: lipogenesis is the conversion of fatty acids and glycerol into fats, or a metabolic process through which acetyl-CoA is converted to.

a) The mass of the oxygen is 1.97 g

b) The percent yield is 90.4 %

c) The mass of the oxygen is 1.55 g

We know that the percent yield has to do with the amount of the reactants that has been converted into products in the given reaction. In this case, the reaction that we are dealing with is the decomposition of the potassium oxo chlorate V molecule.

Now we have that;

a) Number of moles of the chlorate = 5 g/122.5 g/mol

= 0.041 moles

If 2 moles of the chlorate produces 3 moles of the oxygen

0.041 moles of the chlorate produces 3 moles * 0.041 moles/ 2 moles

= 0.0615 moles

Mass of the oxygen produced = 0.0615 moles * 32 g/mol

= 1.97 g

b) Percent yield = Actual/Theoretical * 100/1

=  1.78/1.97 * 100/1

= 90.4 %

c) For a percent yield of 78.5% =

Actual = Percent yield * Theoretical /100

= 78.5 * 1.97/100

= 1.55 g

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% yield = (1.78 g / theoretical yield) × 100%

To calculate the percent yield, you need to know the actual yield and the theoretical yield of the reaction.

In this case, the actual yield is given as 1.78 g of O₂. The theoretical yield represents the maximum amount of product that can be obtained under ideal conditions.

To calculate the theoretical yield, you need to know the balanced chemical equation for the reaction. Assuming the reaction is complete, the coefficients of the balanced equation can be used to determine the stoichiometry of the reaction.

For example, if the balanced equation is:

2 A + 3 B → 4 C + 2 D

Then, you can use the stoichiometry to find the theoretical yield. Let's say the molar mass of O₂ is 32 g/mol. In this case, we need to calculate the moles of O₂ using the given mass of 1.78 g:

moles of O₂ = mass of O₂ / molar mass of O₂

Next, we need to use the stoichiometry to find the moles of the desired product. Let's assume that O₂ is the limiting reactant and that it is completely converted to the product. From the balanced equation, we can see that 4 moles of C are produced for every 2 moles of O₂:

moles of C = moles of O₂ × (4 moles of C / 2 moles of O₂)

Now that we have the moles of C, we can calculate the theoretical yield of C in grams by multiplying the moles by the molar mass of C.

theoretical yield of C = moles of C × molar mass of C

Finally, we can calculate the percent yield using the formula:

% yield = (actual yield / theoretical yield) × 100%

Substituting the values we calculated:

% yield = (1.78 g / theoretical yield) × 100%

Please note that without the balanced chemical equation and additional information, it is not possible to provide a specific numerical answer for the percent yield.

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The rank of particles in order according to size, with the smallest at the top and the largest at the bottom:

1. Protein

2. T2 bacteriophage

3. Influenza virus

4. E. coli bacterium

5. Eukaryotic cell

Protein- 3-6 nm, Proteins are in charge of nearly every aspect of cellular life, including the internal organization and shape of cells, the production of products, the removal of waste, and routine maintenance.

T2 bacteriophage- 60 nm, Enterobacteria phage T2 is a virus that infects and kills E. coli. It belongs to the family Myoviridae and the genus Tequatrovirus.

Influenza virus-  60 to 160 nm, An infection of the respiratory system's nose, throat, and lungs is known as the flu (influenza).

E. coli bacterium- 2000 nm, A Gram-negative, facultatively anaerobic, rod-shaped coliform bacterium belonging to the genus Escherichia.

Eukaryotic cell- 10,000 nm, eukaryote, any cell or organism with a distinct nucleus. The eukaryotic cell has an atomic layer.

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(complete question)

rank the following cells and particles in order according to size, with the smallest at the top and the largest at the bottom.

E. coli bacterium, Eukaryotic cell, T2 bacteriophage, Protein, Influenza virus

One thing that can affect the section B in the given graph is Human greed.

When a population's per capita growth rate remains constant, regardless of population size, exponential growth occurs, causing the population to grow exponentially as the population increases.

Many seal populations are declining as a result of human avarice. Millions of seals were slaughtered in the past for their pricey meat, fat, and fur.

Because seals are blamed by fishermen for the loss in fish stocks, seals are still murdered in huge numbers in several nations.

Thus, this can affect section B of the graph.

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glucose is the answer because that causes energy

Answer:

The correct answer is glucose. During photosynthesis, plants use sunlight to convert carbon dioxide and water into oxygen and glucose, which is used for energy. Glucose is a simple sugar molecule that can be used by plants and animals for energy.

jpshindell13

Explanation:

Answer:

Hydra:

Reproduction by budding in Hydra.

Amoeba:

Reproduction by binary fission in Amoeba.

Hydra:

Budding means sexual reproduction in which a new organism develops from a bud in the parent.

Amoeba:

Binary fission is the type of asexual reproduction in which the parent divides to give rise to two daughter organisms.

Hydra:

In budding process, bud is simply an outgrowth of cells at one particular site.

Amoeba:

The parent replicates its genetic material and divides it equally between the two daughters in binary fission.

Hydra:

The bud or the newly formed organism remains attached to its parent until maturation.

Amoeba:

Both the cytoplasm and the nucleus of the parent divides into two.

Hello. More information is needed to answer your question accurately. However, I will try to help you in the best possible way

If you are referring to what happens if the mass of an atom is greater compared to an atomic number, we can say that there is nothing too much, since it is normal for the atoms to have a mass slightly greater than the atomic number. The mass of an atom can never be less than the number of protons added to the number of neutrons. An atom with greater mass has a greater number of electrons and neutrons in relation to an atom of less mass and it is likely that the atom of less mass will donate or share electron with the atom of greater mass so that both reach the electric balance.

Answer:

circuit compare

with the current in a series circuit, if both circuits have the same

type of cell and the same number of identical flashlight bulbs?

The transversion or transition that seems to be induced by cigarette smoke is due to tranversions.

A mutation has been known as the result of the changes in the structure of a gene, these variations would be happened in the nucleotide sequence of the genome, and it can be as the consequence of DNA damage.

One type of the DNA mutation has the substitution of one base pair for another. Two type of the substitutions that could be happened. One of them are the transversions, which are interchanges of a purine (A or G) for a pyrimidine (C or T) and vice versa.

Therefore, The transversion or transition that seems to be induced by cigarette smoke is due to tranversions.

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Answer:

Bacteria

Explanation:

A plasmid is a small, often circular DNA molecule found in bacteria and other cells. Plasmids are separate from the bacterial chromosome and replicate independently of it. They generally carry only a small number of genes, notably some associated with antibiotic resistance.

The statement which provides evidence about the decreased rate of cell division is B)Decreased affinity of growth factor receptors for their respective ligands. So, correct option is B.

In each of the 4 tissues, there was a critical decline in cell division rates with age. Conversely, cell division rates didn't diminish in that frame of mind of matured mice, and just little abatements were seen in their small digestive tract or throat. These outcomes have significant ramifications for grasping the connection between ordinary undeveloped cells, maturing, and disease. Besides, they give a conceivable clarification to the baffling age-subordinate deceleration in disease frequency in exceptionally old people however not in mice.

Another assessment of recently distributed information recommended to us that the amassing of changes could slow, as opposed to increment, as people age. To make sense of this surprising finding, we estimated that ordinary undifferentiated cell division rates could diminish as we age. To test this speculation, we assessed cell division rates in the epithelium of human colonic, duodenal, esophageal, and back ethmoid sinonasal tissues.

Hence, correct option is B.

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(Complete question) is:

Research on aging suggests that as cells age, their rate of cell division decreases until they ultimately no longer divide. Which of the following would provide evidence that the decreased rate of cell division is a cellular response related to cell signaling?

A. Decreased numbers of cytoplasmic ribosomes

B. Decreased affinity of growth factor receptors for their respective     ligands

C. Decreased hormone production in aged cells

D. Decreased ATP production in aged cells

Answer:

Explanation:

disadvantages:

Models do not behave exactly like the things they represent. Accuracy—In order to make models simplistic enough to communicate ideas some accuracy is lost. For example, ball and stick models of atoms do not show all the details that scientists know about the structure of the atom.

advantages:

When students are engaged in scientific modeling, they are able to notice patterns and develop and revise representations that become useful models to predict and explain--making their own scientific knowledge stronger, helping them to think critically, and helping them know more about the nature of science.

The advantage of a scientific model is it allows complicated processes to be predicted and simplified. A model's drawback is that it could be deceptive and open to numerous interpretations.

The advantages are:

The disadvantages are :

Thus, the advantage and disadvantages are written above.

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