a motile bacterium with flagella arranged in a tuft at one of the cell has this type of flagellar arrangement:

Explanation:

Plant cell

Is the best example of a eukaryotic

\( \bf Eukaryotic \: cells : - \)

They are complex and larger than the prokaryotic cells its name is drived from a Greek word meaning 'good' or 'true nuclei' they consist of the cell wall which protects and supports the plasma membrane these cells are found in all organisms except bacteria and blue green algae for example plant animal fungi etc all are eukaryotes. Amoeba is a eukaryote because it has a distinct nucleus which is bound by nuclear membrane.

Cell :- Smallest structural and functional unit of a living organisms.

Unicellular organisms :- The organisms made up of one cell only.

Multicellular organisms :- The organisms made up of two or more cells.

Cell wall :- The covering of cellulose outside plasma membrane also called plasma membrane.

Centriole :- The cell organelle that helps in cell division found only in animal cell.

Chloroplast :- The photosynthetic originals found in a plant cell green in colour due to the presence of chlorophyll.

Tissue :- A group of cells having the same structure performing the same function.

Nucleus :- The control centre of the cell

Answer:

viruses are a non-living collection of molecules that need a host to survive.

bacteria are free-living cells that can live inside or outside a body

Explanation:

The unknown parent's genotype in the dihybrid cross is likely GgPp. This genotype would result in a 1:1 phenotypic ratio of green pod-purple flower to yellow pod-purple flower offspring.

In a dihybrid cross, we consider two independent traits. In this case, the traits are pod color (green or yellow) and flower color (purple). The known parent's genotype is GgPp, where G represents the dominant allele for green pod color, g represents the recessive allele for yellow pod color, P represents the dominant allele for purple flower color, and p represents the recessive allele for non-purple (white) flower color.

Therefore, the genotype of the unknown parent is likely GgPp, which produces the desired 1:1 phenotypic ratio of green pod-purple flower to yellow pod-purple flower in the offspring.

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Multiple sclerosis (MS) is a potentially devastating brain and spinal cord illness (central nervous system). MS occurs when the immune system destroys the protective coating (myelin) that protects nerve fibers, causing communication issues between the brain and the rest of the body.

What is Multiple sclerosis (MS)?

Multiple sclerosis (MS) is a potentially devastating brain and spinal cord illness (central nervous system).

The immune system assaults the protective coating (myelin) that protects nerve fibers in MS, causing communication issues between the brain and the rest of the body. The condition might eventually cause irreversible nerve injury or degeneration.

MS symptoms vary greatly depending on the extent of nerve damage and which nerves are impacted. Some persons with severe MS may lose the ability to walk independently or at all, whilst others may go through extended periods of remission without experiencing any new symptoms.

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Angelman syndrome is characterized by intellectual disability, severe speech impairment, ataxia, seizures, and a happy demeanor. Prader-Willi syndrome involves hypotonia, hyperphagia, obesity, intellectual disability, behavioral problems, and short stature.

Angelman syndrome and Prader-Willi syndrome are two distinct genetic disorders that are often discussed in the context of epigenetic inheritance. Both conditions result from abnormalities in a specific region of chromosome 15, but they have opposite effects due to differential genetic imprinting.

Angelman syndrome is characterized by developmental delays, severe intellectual disabilities, speech impairments, and motor coordination problems.

Individuals with Angelman syndrome often exhibit a happy and excitable demeanor, with frequent episodes of laughter and a fascination with water. They may also experience sleep disturbances, seizures, and a lack of speech development.

On the other hand, Prader-Willi syndrome manifests with distinct symptoms such as hypotonia (poor muscle tone) during infancy, hyperphagia (insatiable appetite) leading to obesity, developmental delays, learning difficulties, and behavioral challenges.

Individuals with Prader-Willi syndrome often have a compulsive need for food and struggle with weight management. They may also experience hormonal imbalances, growth hormone deficiency, and behavioral issues such as temper tantrums and obsessive-compulsive behaviors.

Epigenetic inheritance refers to the transmission of information from one generation to another that affects gene expression without altering the underlying DNA sequence.

In the case of Angelman and Prader-Willi syndromes, these conditions result from epigenetic changes, specifically imprinting, in the chromosomal region involved. Imprinting refers to the process by which certain genes are marked or silenced based on their parental origin.

In Angelman syndrome, the paternal copy of the UBE3A gene is deleted or silenced, leading to a lack of functional UBE3A protein in the brain. In Prader-Willi syndrome, the maternal copy of the same gene is affected. These imprinted genes play critical roles in brain development and function, leading to the distinct symptoms observed in each disorder.

It is important to note that while both Angelman and Prader-Willi syndromes are considered examples of epigenetic inheritance, the underlying mechanisms and specific epigenetic changes involved are complex and continue to be studied.

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He will be less likely to contract an STI.

Option B is the correct answer.

STI stands for sexual transmitted infection.  A sexually transmitted infection (sexually transmitted disease) is a serious condition that can develop after you have sex.

So if Nasir is 12 years old, and if his caregivers talk with him openly about sexuality, he will be well informed about dangers of premature sex and sexually transmitted disease.

Thus, he will be less likely to contract an STI.

The wrong choices in the given options are;

He will soon come out as gay.

He will have sex by age 13.

He will marry by age 18.

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mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.

in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.

hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.

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The metric system is a system of measurement that is utilized throughout the world. The fundamental units of the metric system are meter, gram, and liter. In this system, prefixes are used to represent measurements that are bigger or smaller than the fundamental units.

The prefix “kilo-,” for example, indicates a measurement that is a thousand times bigger than the fundamental unit. Lab Intro - The Metric System Exercise A - Measurement or Distance The metric system is used to measure length or distance.

The standard unit of length in the metric system is the meter, which is represented by the symbol “m.” The metric system is used to measure distances or lengths that vary from millimeters (mm) to kilometers (km).In order to determine measurements in the metric system, the fundamental units are combined with prefixes.

For example, one centimeter (cm) is equal to 1/100th of a meter, while one millimeter (mm) is equal to 1/1000th of a meter. One kilometer (km), on the other hand, is equal to a thousand meters (m).

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Answer:

A. Hydrophobic tail

Explanation:

Refer the attachment

Answer:

43

Explanation:

Because we need to multiply the product

Skin cancer does not explain the high selective pressure for dark skin in areas with high doses of sun exposure because we need a thick layer of keratinocytes cells (high cell proliferation rate) in these regions in order to avoid the harmful effects of sun radiation, but cancer-aging association refers to the loss of control of the cell cycle in keratinocytes.

The relationship between cancer and aging is based on the fact that cells in older individuals may lose the ability to control the cell cycle, which is a distinctive feature of cancer cells such as skin cancer cells.

Therefore, with this data, we can see that the relationship between cancer and aging is based on the presence of mutations that lead to the loss of control in the cell cycle and thus are associated with cancer.

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When assessing a client with pertussis, the nurse should expect to see a runny nose. The correct answer is 3.

Pertussis, also known as whooping cough, is a highly contagious respiratory infection caused by the bacterium Bordetella pertussis.

It primarily affects the respiratory system, leading to a range of symptoms. While all the options presented are possible symptoms in certain conditions, the most specific and commonly associated symptom of pertussis is a persistent, severe, and prolonged cough.

Enlarged lymph nodes throughout the body (option 1) are not typically observed in pertussis. Lymphadenopathy, or swollen lymph nodes, is more commonly associated with other infections or inflammatory conditions.

A red rash (option 2) is not a characteristic symptom of pertussis. Skin rashes are not typically associated with the infection.

Vertigo (option 4), a sensation of dizziness or spinning, is not a typical symptom of pertussis. It is more commonly associated with inner ear problems or other conditions.

In summary, among the options provided, a runny nose is the finding that is most commonly associated with pertussis.

However, it's important to note that a definitive diagnosis should be made by a healthcare professional based on a comprehensive assessment, including clinical presentation and appropriate diagnostic tests. Therefore, the correct answer is 3.

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Answer:

Biological anthropology shows that cultural contexts are useful to explain human evolution.

Explanation:

Biological anthropology is a research area focused on the study of biological and behavioral determinants associated with human evolution. Biological anthropology enables us to trace the evolutionary origins of hominids and primates in general. Moreover, this discipline also sheds light on how different environments act on the mechanism of natural selection and thus shape human behavior. However, biological anthropology should not be considered to be part of social Darwinism used to apply Darwin's ideas to social policies.

Answer: sponges

Explanation: I think it is sponges as they do not exhibit tissue-layer organization and they do have different cell types that perform distinct functions and they also lack any real organs...

Soil erosion rates accelerate dramatically, impacting water quality in streams and rivers.

Answer:

B

Explanation:

Answer:

Daugter cells

Explanation:

thses are called Daughter cells

Answer: Daughter Cells

Explanation: The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells.

Answer:

A

Explanation:

:) the hard part mostly the bones are left behind.

The two pieces of evidence that support the theory of the expanding universe are the red shift of light from distant stars and the existence of cosmic background radiation.

The correct answer is option B.

1. Red shift of light from distant stars: The observation of redshift in the light coming from distant galaxies provides evidence for the expansion of the universe. Redshift occurs when the light waves from an object moving away from an observer are stretched, causing a shift towards longer wavelengths. This phenomenon is consistent with the Doppler effect, where the wavelength of light appears to stretch as the source moves away. The redshift of light from distant stars indicates that galaxies are moving away from us and from each other, supporting the idea that the universe is expanding.

2. Existence of cosmic background radiation: The discovery of cosmic background radiation further supports the theory of the expanding universe. Cosmic background radiation is a faint, uniform microwave radiation that permeates the entire universe. It is believed to be residual radiation from the Big Bang, the initial event that is thought to have initiated the expansion of the universe. The presence of cosmic background radiation provides strong evidence for the hot, dense early stages of the universe and its subsequent expansion.

Based on the information provided in the diagram, it is not possible to determine the identity or nature of the celestial objects labeled X. The diagram only represents the expansion of the universe over time and does not provide specific details about individual celestial objects.

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Answer:

catabolic pathway/ catabolism

Explanation:

The energy profile diagram shows an exothermic or exergonic process - as the process releases energy. Catabolic reactions breakdown larger molecules into smaller ones, giving off energy. For example the glycolysis.

Answer:Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.

Explanation:

Answer:

1) rough reading

2)initial reading

3)final reading

Explanation:

those three are always important for every lab report

Answer: decrease, increase

Explanation: Coral can live in acidic water, but is less healthy and dense

Many disorders are due to the inability of an individual to break down a particular chemical. A person who has a disease called phenylketonuria (PKU).

Which prevents them from breaking down the amino acid phenylalanine, this is one example of a person who is unable to break down a chemical in their body.

Giving a person the right enzymes can help treat these diseases. Chemicals in our bodies are broken down by enzymes, which act as biological catalysts.

Therefore, if a person is deficient in the right enzyme, that person can be cured by giving them that enzyme. Let's discuss the remaining options.

Antigens are dangerous foreign substances that have gotten inside the body. The genetic material is stored on chromosomes, which are found inside the nucleus.

Organelles are cellular structures, such as the mitochondria, nucleus, and endoplasmic reticulum, that have particular roles.

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Your question is incomplete, but most probably your full question was,

Many disorders are due to the inability of an individual to break down a particular chemical. Sometimes these disorders can be treated by giving the affected individual the appropriate

(1) enzymes

(2) antigens

(3) chromosomes

(4) organelles

Answer:

Ethylene

Explanation:

When a peach is trapped in a brown paper bag, it gives off ethylene gas, which helps the fruit ripen faster.

Answer:

The environmental impact of a food is the effect that the entire production chain has. From the primary, continuing with the stages of transformation, distribution, use and final disposal. This can translate into: * Global warming

We can see here that writing out the characteristics of the giving climate zones, we have:

1. Polar

A sizable region of the planet with a comparable climate is known as a climate zone. Climate is the long-term average of a region's weather conditions. Temperature, precipitation, humidity, wind, and cloud cover are some of these factors. Many variables, such as latitude, height, and proximity to water bodies, affect the climate zones.

2. Tundra

3. Temperate

4. Arid

5. Tropical

6. Mediterranean

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Answer:

The correct answer is - to measure confirmed or fixed temperature.

Explanation:

When the liquid of the flask was being heated, temperature rises of the liquid and when thermometer is being place in flask to measure the temperature of liquid of the flask the liquid present in thermometer is also start to rise.

The rise in the liquid is due to increse of the temperature due to flow of the heat from high temperature to low temperature are until the tempearture become equal. So, the when the liquid stop rising it means both are on same temperature and this is the measure ment of the liquid of the flask.

Answer:fixed temperature

Explanation:

Yea

The age of the Thorium sample that originally contained 200 grams would be 72 days.

The decay of Thorium-234 follows an exponential decay model, where the amount of Thorium-234 remaining after time t is given by:

N(t) = N0 * (1/2)^(t/T)

where:

N0 = initial amount of Thorium-234 (200 g in this case)

N(t) = amount of Thorium-234 remaining after time t (25 g in this case)

T = half-life of Thorium-234 (24 days in this case)

Substituting the given values into the equation, we get:

25 = 200 * (1/2)^(t/24)

(1/8) = (1/2)^(t/24)

Taking the logarithm of both sides (base 2), we get:

log2(1/8) = log2[(1/2)^(t/24)]

-3 = -(t/24)

t = 72 days

Therefore, the age of the sample is 72 days.

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