three criteria used for classification of the atmosphere are question 73 options: structure, origin, evolution. composition, origin, evolution. structure, origin, temperature. composition, temperature, and function.

Examples of zoonotic diseases include a. rabies and b. anthrax.

Rabies is a viral disease that affects the central nervous system of mammals, including humans, it is transmitted through the saliva of infected animals, often via bites or scratches. Common carriers of the rabies virus include bats, raccoons, and foxes, and preventative measures include vaccination of pets and avoiding contact with wild animals. Anthrax  is a bacterial infection caused by Bacillus anthracis, this bacterium forms spores that can survive in harsh environments for long periods. Anthrax can be contracted through direct contact with infected animals, ingestion of contaminated food products, or inhalation of spores.

It affects livestock and can be transmitted to humans, causing symptoms ranging from skin lesions to respiratory failure. Proper handling and disposal of infected animals, as well as vaccination of livestock, can help prevent anthrax transmission.  Measles (C) and chickenpox (D) are not considered zoonotic diseases, as they are both viral infections that primarily affect humans and are transmitted through human-to-human contact. So therefore the correct answer is a. rabies and b. anthrax are examples of zoonotic diseases.

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Answer:

so I believe it is A

Explanation:

Sexual reproduction is primarily responsible for genetic variation through genetic recombination. Recombination occurs in three different ways: during meiosis, when genes separate; during fertilisation, when genes randomly combine; and during meiosis, when genes cross over.

Random mutations and genetic recombination are the two primary causes of genetic variation. Mutations are modifications to an organism's DNA that affect its physiology, behaviour, and/or appearance. All mutations are random, which indicates that they don't arise from an organism's "needs" or from things that would be helpful to it. Additionally, somatic (body) cell DNA mutations do not influence evolution in the same way as sex cell DNA mutations do. Overall, mutations are uncommon, and the majority of them are negative or inactive. Chemicals, radiation, and errors that occur when DNA is replicated during cell division are the primary causes of mutations.

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#19

Polar nuclei fuse to produce Diploid secondary nucleus.

#20

After fertilisation the antipodal cells undergo meosis

#21

In which of the following double fertilisation occurs.

Ans:- Angiosperm s

#22..

In angiosperms pollen grains germinate on the Anther.

Answer:

q.19 Diploid Secondary nucleus

q.20 Undergoes miosis

q.21 Angiosperms

q.22Anther

Answer:

Explanation:

mark as brainleast and fo-ll-ow me

Answer:

got this from a website

Explanation:

Eliezer shares a silent, powerful moment of sadness and understanding with his father. For Yom Kippur, when Jews traditionally fast, his father forbids Eliezer from fasting. Eliezer no longer believes in such rituals, anyway.

it is a feeling of sadness

Transcription is mRNA synthesis, which occurs by complementing a segment of the DNA template strand. The translation is the protein growth, which occurs by adding amino acids coded by mRNA codons. C) the polypeptide is 6 amino acids long.  

The whole process of protein synthesis includes Transcription and translation.

TRANSCRIPTION

Transcription is the mRNA synthesis process and occurs in the nucleus.

The DNA template strand is read in direction 3'→ 5' to build the mRNA molecule in direction 5'→ 3'. The template strand is the one that is going to be complemented by the mRNA.

mRNA molecule has the same sequence as the DNA coding strand, but it carries uracil instead of thymine.

TRANSLATION

Translation is the process through which polypeptide grows. It occurs in the cytoplasm.

rRNA and tRNA read mRNA in the direction 5'→ 3' and add the correct amino acids to build the new protein.

Amino acids are coded by mRNA codons. Protein synthesis initiates in the AUG start codon -Metionin- and ends when reaching either of the stop codons UAA, UAG, or UGA.

In the exposed example, we have a DNA strand. We know that it is the coding strand, so it has the same sequence as mRNA molecule.

5' AATCCGTATCTATGACCGTTTGGAAACACTAAGCGGTACTC 3'

5' AAUCCGUAUCUAUGACCGUUUGGAAACACUAAGCGGUACUC 3'

Kowing mRNA sequence, we can grow the protein.

So first, we need to find the initiation codon (AUG), begining from the mRNA 5' extreme. Then we need to find a stop codon (UAA, UAG, or UGA).

5' AAUCCGUAUCUAUGACCGUUUGGAAACACUAAGCGGUACUC 3'

5' AAUCCGUAUCUAUGACCGUUUGGAAACACUAAGCGGUACUC 3'

So this protein begins in AUG and ends in UAA.

To grow the protein, we need to separate mRNA codons and find the corresponding amino acids.

According to this reasoning, the polypeptide is 6 amino acids long. Option C) is correct.

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Answer:diwe after competing the mitosis

Explanation:

Answer:

B

Explanation:

A tumor develops when cells in the body divide and grow at an excessive rate. Typically, the body is able to balance cell growth and division. When old or damaged cells die, they are automatically replaced with new, healthy cells. In the case of tumors, dead cells remain and form a growth known as a tumor.

Answer: The Substance is called Carbon Dioxide

Explanation:

This is essential for internal respiration. Carbon dioxide is a guardian of the pH of the blood, which is essential for survival.

I hope this helps

Answer:  The biosphere and atmosphere are dynamic, constantly reflecting these interactions and feedbacks. ... Biosphere-Atmosphere Interactions focuses on the sources and sinks of greenhouse gases (GHGs), air pollutants, particulate matter, water, and energy between the Earth's surface and the atmosphere.

Explanation:

Answer:

DNA replication involves synthesis of DNA molecules, while transcription is a process that involves synthesis of RNA molecules. In both processes, DNA acts as template and provides information for synthesis of new daughter DNA or RNA strand.

Explanation:

Answer:

i believe it is d.

Explanation:

a) The CDC data shows that New Jersey (NJ) has experienced additional surges in daily COVID-19 deaths since Figure 1.4.

b) Daily cases and hospitalizations in NJ are leading indicators of daily COVID-19 deaths, demonstrating a cause-and-effect relationship.

a) By accessing the CDC data for New Jersey, it is evident that the state has witnessed additional surges in daily COVID-19 deaths since Figure 1.4. The data provided by the CDC allows for a comprehensive understanding of the impact of the virus in different regions, and in the case of New Jersey, it highlights the unfortunate reality of increased mortality due to the mutated variants of the virus.

b) The CDC data for New Jersey also reveals that daily cases and hospitalizations act as leading indicators of daily COVID-19 deaths. This implies that an increase in daily cases and hospitalizations occurs before a subsequent increase in daily deaths. These indicators serve as crucial warning signs, allowing healthcare professionals and policymakers to anticipate and respond to the potential escalation in fatalities.

Understanding the cause-and-effect relationship between daily cases and hospitalizations as leading indicators and daily COVID-19 deaths is vital for effective public health measures and resource allocation. It underscores the importance of early detection and intervention to prevent the further spread of the virus and minimize its impact on mortality rates.

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1.) Explain the relationship between chlorophyll absorption and wavelength.

Answer:

As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants.

2.) Justify the claim that photosynthetic organisms that live less than 25 feet below the surface of the ocean do not need phycoerythrin to survive. Provide reasoning that explains this claim.

Answer:

The three most common organisms at the bottom of the Mariana Trench are xenophyophores, amphipods and small sea cucumbers (holothurians), Gallo said. The single-celled xenophyophores resemble giant amoebas, and they eat by surrounding and absorbing their food.

There is great relationship between absorption of chlorophyll and wavelength.

There is direct relationship between chlorophyll absorption and wavelength because chlorophyll absorb the energy of certain wavelengths of light, that initiates the reactions of photosynthesis. The best wavelengths of visible light that is used by the plant during the process of photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm).

The photosynthetic organisms that live less than 25 feet below the surface of the ocean do not need phycoerythrin to survive because the green light does not needed by the plant for the process of photosynthesis. Only red and blue light is used for making food so phycoerythrin which is responsible for capturing green light is not needed by the plants for their survival so we can conclude that there is direct relationship between absorption of chlorophyll and wavelength.

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Explanation:

Five elements—carbon, hydrogen, oxygen, nitrogen and sulfur—form the amino acids of proteins, and if we exchange phosphorus for sulfur five elements also compose nucleic acids like DNA.

The rate at which the concentration of the drug in the blood is changing 6 hours after swallowing the pill is approximately -0.16 units per liter of blood per hour.

To compute the rate at which the concentration is changing 6 hours after swallowing the pill, we need to find the derivative of the concentration function, d(t), with respect to time (t).

Using the quotient rule, the derivative of d(t) with respect to t is:

d'(t) = \([(5t^2 + 125)(350) - (350t)(10t)] / (5t^2 + 125)^2\)

Now, we can substitute t = 6 into the derivative expression to find the rate of change at 6 hours:

d'(6) = \([(5(6)^2 + 125)(350) - (350(6))(10(6))] / (5(6)^2 + 125)^2\)

Evaluating the expression, we find:

d'(6) ≈ -0.16

The resulting value is approximately -0.16 units per liter of blood per hour.

The negative sign indicates that the concentration of the drug is decreasing over time. This implies the drug metabolism or elimination from the body, leading to a decline in its concentration in the blood. The magnitude of the rate (-0.16) signifies the speed or intensity of the concentration change, indicating a relatively moderate decrease in the drug's concentration 6 hours after ingestion.

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An intermediate community emerges in sand dunes as the sand gradually becomes stabilized, allowing certain types of plants to grow and establish themselves. These plants are typically able to survive in harsh and dry conditions, and they can trap and hold sand with their roots and stems, leading to further stabilization of the dune. As the dune becomes more stable, larger plants and trees can begin to grow, and the community becomes more complex and diverse.

In the early stages of dune formation, only a few species of plants are able to survive in the harsh, sandy environment. These are typically pioneering species, such as marram grass and sea rocket, which have adaptations that allow them to survive in the harsh conditions. As these plants grow and spread, they trap sand with their roots and stems, leading to the formation of small mounds or hummocks. Over time, other plant species, such as beach heather and sand sedge, may begin to grow on these mounds, forming an intermediate community. As the dune continues to stabilize, larger plants and trees, such as pine and oak, may begin to grow, leading to the development of a more complex and diverse ecosystem.

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A) 100% of the population in this case has cystic fibrosis.

B) Expected number of newborns with cystic fibrosis is 289 newborns.

C) It is unlikely that the assumption of Hardy-Weinberg equilibrium is met in this case.

a) To calculate the percentage of the population with cystic fibrosis (cc or q²), we can use the Hardy-Weinberg equilibrium equation:

\(p^2 + 2pq + q^2 = 1\)

Where:

p = frequency of the dominant allele (C)

q = frequency of the recessive allele (c)

p² = frequency of homozygous dominant individuals (CC)

2pq = frequency of heterozygous individuals (Cc)

q² = frequency of homozygous recessive individuals (cc)

Given that cystic fibrosis is only expressed in individuals who are homozygous for the recessive allele (cc), we can substitute q^2 for the percentage of the population with cystic fibrosis.

Given:

Frequency of the recessive allele (q) = 1700 / 1700 = 1 (since all affected individuals are homozygous recessive)

Using the equation, we get:

\(q^2 = 1^2 = 1\)

So, 100% of the population in this case has cystic fibrosis.

b) Assuming a population of 10,000 people and Hardy-Weinberg equilibrium, we can calculate the expected number of newborns with cystic fibrosis by multiplying the frequency of the recessive allele (q) by the total population (N) and then squaring it (for q²):

Frequency of the recessive allele (q) = 1700 / 10,000 = 0.17 (since 1700 out of 10,000 individuals have cystic fibrosis)

Expected number of newborns with cystic fibrosis = q² * N

\(= 0.17^2 * 10,000\)

= 289 newborns

c) The assumption of Hardy-Weinberg equilibrium is not likely to be true in this situation. The given scenario of 1700 individuals out of 10,000 having cystic fibrosis suggests a much higher frequency of the recessive allele (c) in the population than would be expected under Hardy-Weinberg equilibrium. Hardy-Weinberg equilibrium assumes no mutation, migration, selection, or genetic drift, and a large random mating population, which may not be true in this case. Additionally, genetic testing, carrier screening, and other interventions may affect the distribution of the alleles in the population, further deviating from the assumptions of Hardy-Weinberg equilibrium.

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Answer:

At 0.1 to 5.0 μm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10 to 100 μm

Explanation:

Answer:

0.1 to 5.0 μm = prokaryotic cells

10 to 100 μm = eukaryotic cells

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Conventional agriculture is a type of farming that relies on synthetic chemical fertilizers, pesticides, and herbicides to maximize crop yields.

What is agriculture?

Agriculture is the science, art, and business of cultivating plants and livestock. It involves the cultivation of soil, crops, and livestock, as well as the processing and marketing of food, fiber, feed, and other agricultural products. Agriculture has been a major source of income for people throughout history and continues to be the basis of many economies today.

Conventional agriculture typically relies on monoculture, or the growing of a single crop over a large area, as well as large-scale mechanization to increase efficiency. Conventional agriculture is often contrasted against organic or sustainable agriculture, which utilizes natural methods and materials to maintain soil fertility and protect the environment.

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Answer:

sorry i don't know the answer btw do you have an ig

Screening refers to the identification of a disease or health condition in a population before the onset of symptoms or when the disease is still in its early stages. Therefore, the correct answer is "Identification of asymptomatic disease."

Although treatment of the disease is an important aspect of managing and controlling its impact, it is not part of the definition of screening. Similarly, identification of symptomatic disease may be important for individual diagnosis and treatment but it is not the primary focus of screening. Therefore, the answer "Identification of symptomatic disease" and "Treatment of the disease" are not correct.

Hence, the correct answer is "Identification of asymptomatic disease."

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The best null hypothesis for the group's experiment would be “There is no reaction time difference between people who wear glasses and people who don’t.”

A null hypothesis is a statement that assumes there is no significant difference between two groups or variables being compared. In this case, the null hypothesis assumes that wearing glasses has no effect on reaction time, and any observed differences in reaction time are due to chance. This is the most appropriate null hypothesis for the group's experiment because it is the opposite of their hypothesis and can be tested using statistical analysis. If the null hypothesis is rejected, then the group's hypothesis that glasses slow reaction time would be supported.

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Answer:

They move

Explanation:

Answer:

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.Plate tectonics move because they are carried along by convection currents in the upper mantle of the planet (the mantle is a slowly flowing layer of rock just below Earth's crust). Hot rock just below the surface rises and when it cools and gets heavy, it sinks again.

Explanation:

Answer:

basically gas exchange happens in alveoli where Oxygen enters in RBC and co2 is released where oxygenated and deoxygenated bloods get seperated

Product production decreased when substance A was introduced to an enzyme process. More substrate was not added, but product formation was not increased. This leads us to the conclusion that substance A might act as an inhibitor.

Enzyme reactions are chemical reactions that occur as a result of enzyme catalysts. Enzymes are proteins that catalyze chemical reactions, speeding up chemical reactions in cells by up to a billion times.

The product is the outcome of the reaction. Enzyme reactions convert substrates into products. An enzyme-substrate complex is formed when the enzyme and substrate interact. The substrate is then converted to the product after the reaction is complete.

An inhibitor is a substance that slows down or prevents an enzyme-catalyzed reaction. The addition of substance A to the enzyme reaction caused a decrease in product formation, implying that substance A inhibited the reaction. The addition of more substrate did not increase product formation, implying that there was no enzyme activity. As a result, substance A may be an inhibitor of the enzyme's action.

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