a phlyogeny is a: group of answer choices a stratigraphic ordering. hierarchical classification of taxa family tree of evolutionarily related taxa a detailed graph of all taxa in a group

Answer:

False please mark me brainlest.

Explanation:

Answer: DNA in the bacterial cell always in contact with the cytoplasm, and all eukaryotes have DNA located inside a nucleus

Explanation:that’s what I put on the test got 100/100

DNA in the bacterial cell always in contact with the cytoplasm, and all eukaryotes have DNA located inside a nucleus. Thus option A is correct.

DNA is the double helical structure, a carrier of genetic material present in a chromosome of nucleus; Bothe prokaryotic and eukaryotic cell contain DNA.

It is made up of nitrogenous base, deoxyribose sugar , and a phosphate group, there are four types of nitrogenous base which has been classified into purine and pyrimidine based on the structure.

Purine refers to adenine (A) and guanine (G) while a pyrimidine, refers to cytosine (C) and thymine (T), purine can pair with pyrimidine by forming different number of hydrogen bond.

DNA is a twisted helical structure form a right-handed helix, here Adenine can pair with Thymine by two hydrogen bond and Guanine can pair with Cytosine by three hydrogen bond.

Thus option A is correct.

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Answer:

Unclean conditions

Explanation:

Answer:

Vehicle Hazards

Explanation:

Answer:

Quedan 7.317 kilogramos de oxígeno en el balón y se extraen 4.683 kilogramos de oxígeno en el proceso.

Explanation:

Asúmase que el balón es rígido. Supongamos que el oxígeno se comporta como un gas ideal, entonces la ecuación de estado es la siguiente:

\(P\cdot V = \frac{m\cdot R_{u}\cdot T}{M}\) (1)

Donde:

\(P\) - Presión, medida en atmósferas.

\(V\) - Volumen, medido en litros.

\(m\) - Masa, medida en kilogramos.

\(M\) - Masa molar, medida en kilogramos por kilomol.

\(T\) - Temperatura, medida en Kelvin.

\(R_{u}\) - Constante de los gases ideales, medida en atmósfera-litros por kilomol-Kelvin.

El aire experimenta un proceso isocórico e isotérmico, entonces obtenemos la siguiente relación:

\(\frac{P_{1}}{m_{1}} = \frac{P_{2}}{m_{2}}\) (2)

Nótese que los subíndices 1 y 2 representan los estados inicial y final de proceso.

Si sabemos que \(P_{1} = 41\,atm\), \(m_{1} = 12\,kg\) y \(P_{2} = 25\,atm\), entonces la masa final del aire es:

\(m_{2} = \frac{P_{2}}{P_{1}} \cdot m_{1}\)

\(m_{2} = \left(\frac{25\,atm}{41\,atm}\right)\cdot (12\,kg)\)

\(m_{2} = 7.317\,kg\)

La masa que se ha extraído del balón es:

\(\Delta m = m_{1}-m_{2}\)

\(\Delta m = 12\,kg-7.317\,kg\)

\(\Delta m = 4.683\,kg\)

Quedan 7.317 kilogramos de oxígeno en el balón y se extraen 4.683 kilogramos de oxígeno en el proceso.

Answer:

Experimental design means planning a set of procedures to investigate a relationship between variables, or experimental design refers to how participants are allocated to the different groups in an experiment. The types of design include repeated-measures, independent-groups, and matched pairs design.

Annotated bibliography provides specific information about each source you've used. As a researcher you have become an expert on your topic: you have the ability to explain the content of your sources, assess the usefulness, and share this information with others who may be less familiar with them.

Annotated bibliography is a list of citations to books, articles and documents.

Good environmental science experiments are;

1.Water science fair projects.

2. Air quality Science fair projects

3. Climate change Science fair projects

4. Solid waste recycling Science fair projects.

Explanation:

Hope it helps.

Answer:

a thing or event that evokes a specific functional reaction in an organ or tissue

a thing that rouses activity or energy in someone or something; a spur or incentive

an interesting and exciting quality.

Explanation:

Answer:

A stimulus package is a coordinated effort to increase government spending—and lower taxes and interest rates.

A protein is made up of one or more polypeptide chains—chains of amino acids—whose structure is stored by a gene.

Amino acids are organic substances with an organic side chain and the two functional groups amino (NH2) and carboxylic (COOH). To create a protein, twenty distinct amino acids are required. Polypeptides are sequences of amino acids that can be found in proteins. The polypeptide folds into a physiologically active form as a result of the amino acid chain arrangement.

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The stratigraphy drawing can be used to determine the relative ages of the different layers. Radiocarbon dating can be used to date layer B containing an unfossilized bone.

The layer at the bottom of the stratigraphy drawing is the oldest, indicated by the letter "A." The layer at the top of the stratigraphy drawing is the youngest, indicated by the letter "E."

To date layer B contains an unfossilized bone, one could use radiocarbon dating, also known as carbon-14 dating. This dating method relies on the radioactive decay of carbon-14, which is found in organic materials, such as bone. Carbon-14 dating can be used to determine the age of the bone up to approximately 50,000 years ago, which makes it an appropriate dating method for layer B in the stratigraphy drawing.

To determine a chronometric date for the fossilized bone found in layer D, a combination of different dating methods could be used. Since layers C and E are made of volcanic rock, it is possible to use radiometric dating techniques, such as potassium-argon dating or argon-argon dating, which rely on the decay of radioactive isotopes of potassium to argon, to date these layers.

Once the dates for layers C and E have been determined, it would be possible to bracket the age of layer D. Additionally, other dating methods, such as paleomagnetism, which uses changes in the earth's magnetic field to date rock formations, could be used to further refine the age range of layer D. Ultimately, a combination of dating methods would be necessary to determine a reliable chronometric date for layer D.

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because the river is blank, how could it not end into blank??

im just doing this fr points lol

thx btw

Answer: Open watersheds rivers rain into ocean

Explanation: but blank rivers drain into blank could mean anything, unless there are words you can choose from than that will narrow it down

The enzyme that glues the DNA fragments together is DNA ligase.

A DNA-joining enzyme is called DNA ligase. Ligase can join two sections of DNA that have identical ends together to create a single, uninterrupted DNA molecule. DNA ligase fills in the space left between the molecules in order to create a single piece of DNA. These small fragments of DNA are called as okazaki fragments.

In eukaryotes, okazaki fragments are brief sequences of DNA nucleotides that are synthesised intermittently and later joined by the enzyme DNA ligase to form the lagging strand during DNA replication. They are roughly 150–200 base pairs long.

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If John is sweating profusely and losing large amounts of fluid, the hormone that would elevate initially within the body is the antidiuretic hormone (ADH).

Antidiuretic hormone (ADH), also known as vasopressin, is produced by the hypothalamus and stored in the pituitary gland. It regulates fluid balance in the body by decreasing urine output and increasing the reabsorption of water in the kidneys.

When fluid levels drop, for example through excessive sweating, the hypothalamus releases ADH, which signals the kidneys to reabsorb more water from the urine and return it to the bloodstream, conserving fluid and maintaining proper blood volume.

Elevated ADH levels result in an increased reabsorption of water, leading to a decrease in urine output and a reduction in the overall loss of fluid from the body. This helps to maintain fluid balance and prevent dehydration, which can be dangerous in extreme cases.

In addition to ADH, other hormones, such as aldosterone, may also play a role in regulating fluid balance in the body, particularly in response to dehydration. However, ADH is the primary hormone that regulates fluid balance in response to acute changes in fluid levels, such as excessive sweating.

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Answer:

Explanation:

Gene expression in eukaryotic cells is regulated by repressors as well as by transcriptional activators. Like their prokaryotic counterparts, eukaryotic repressors bind to specific DNA sequences and inhibit transcription.

Answer:

THE RELATIONSHIP OF IDENTIFICATION TO BACTERIAL CLASSIFICATION AND NOMENCLATURE. In order to identify an unknown bacterial isolate, the characteristics of the isolate must be compared to known taxa. In microbiology, the basic taxonomic unit is the species, and groups of related species are placed in the same genus.

Answer:

A.) gametes

Explanation:

Gamete mutations can be passed on to future generations of the species. I hope I helped! ^-^

The statement "One would expect that a perennial plant would devote more energy and biomass to development as compared to an annual plant" is true. They are characterized by their ability to live for multiple years, while annual plants complete their life cycle within a single year.

As a result, perennial plants have more time and resources to allocate towards growth and development. They invest a significant amount of energy and biomass into developing strong root systems, sturdy stems, and extensive leaf structures, which enable them to survive and thrive over multiple growing seasons.

In contrast, annual plants focus their energy on producing flowers and seeds for reproduction within a limited time frame. Due to their shorter life cycle, annual plants prioritize efficient reproduction rather than long-term growth and survival.

Thus, perennial plants are expected to devote more energy and biomass to development compared to annual plants.

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Complete question :

One would expect that a perennial plant would devote more energy and biomass to development as compared to an annual plant. T/F

Answer:

ugh girlly I wish I could help you sorry luv btw cute pfp<3

Explanation:

-xoxo

 options a, b, and c are not accurate conclusions based on the given information.

The correct answer is d) They will be haploid (2n). Gametes are haploid cells, meaning they contain half the number of chromosomes as somatic cells. Since the insect's gamete contains 4 chromosomes, the somatic cells would have a diploid number of 8 chromosomes (2n = 8). The amount of DNA in the gamete is not necessarily indicative of the amount of DNA in the somatic cells, as somatic cells can undergo DNA replication and have varying amounts of DNA depending on the stage of the cell cycle.

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Answer:

a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra.

Answer:

Explanation:

b

Answer:

Explanation:

nitrogen

Answer:

nitrogen

Explanation:

Working with cows and horses can present different dangers. Horses are more naturally aggressive than cows and spook or startle quicker than cows do.

This can make working with horses a bit more unpredictable than working with cows. However, cows are more combative and tend to react as a herd, so they can be more dangerous in certain situations. Moreover, cows are more territorial than horses, but horses are more protective.

This means that horses may be more likely to defend an area from a perceived threat, whereas cows may be more likely to attack a perceived intruder.

Additionally, cows weigh more than horses, so they can cause more physical damage if they become aggressive. Ultimately, it is important to recognize the different dangers that come with handling cows and horses and to take proper safety precautions when working with either animal.

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The children in (iii-a) and (iii-e) did not get the disease because it is X-linked and they received a healthy X chromosome from their mothers.

X-linked diseases are caused by mutations in genes located on the X chromosome. In this case, the disease is caused by a mutation in a gene located on the X chromosome and is passed from affected fathers to their daughters, who are then carriers of the disease. Sons, however, receive only one X chromosome from their mothers and do not inherit an affected X chromosome from their fathers. This is why the children in (iii-a) and (iii-e) did not get the disease, even though both fathers had the disease. They received a healthy X chromosome from their mothers and did not inherit the affected X chromosome from their fathers. This pattern of inheritance is a hallmark of X-linked diseases and helps to explain why some individuals are affected and others are not.

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Answer:

Always highly toxic to humans.

Always the best weapon against insect pests

Explanation:

Pesticides are always highly toxic to humans as well as all synthetic chemicals are always the best weapon against insect pests because the chemicals used in these pesticides affect the body structure as well as other mechanism of survival for the insects or pests. The ingredients present in pesticides are highly toxic to humans which leads to the death of human while on the other hand, it is the best weapon used by humans against pest.

A postzygotic isolating mechanism refers to the mechanisms that prevent the formation of viable offspring between two species found in the same geographical location. There are several postzygotic isolating mechanisms, including hybrid inviability, hybrid sterility, and hybrid breakdown.

Hybrid inviability occurs when the hybrid offspring of two different species cannot survive to adulthood.This may be due to genetic incompatibilities that prevent the normal development of the hybrid. Hybrid sterility occurs when the hybrid offspring of two different species are infertile. This means that they cannot produce viable offspring of their own, effectively ending the genetic lineage.

Hybrid breakdown occurs when the hybrid offspring of two different species can produce offspring of their own, but those offspring have reduced fitness or viability. This may be due to genetic incompatibilities that become more pronounced over time.

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A. Based on the information provided, the number of total coliforms in the 5 mL sample of water is 5 x 1 CFU/mL = 5 CFU,

the number of fecal coliforms is 1 x 4 CFU = 4 CFU.

B. the concentration of total coliforms in the water sample is 288 CFU/100 mL.

C. Based on the high concentration of coliforms in the water sample, it is not safe to drink.

D. Non-fecal coliforms form white colonies because they do not ferment lactose to produce acid, and therefore do not cause a pH change in the medium that would result in a blue color.

E. If we were to gram stain one of the blue colonies on the plate, we would predict that it is a gram-negative bacterium.

A. Based on the information provided, the number of total coliforms in the 5 mL sample of water is 5 x 1 CFU/mL = 5 CFU,

the number of fecal coliforms is 1 x 4 CFU = 4 CFU.

B. To calculate the concentration of total coliforms in CFU/100 mL, we can use the following formula:

Concentration (CFU/100 mL) = (Number of colonies / Volume plated) x (Dilution factor / Volume filtered) x 100

In this case, the dilution factor is 20 (assuming a 1:20 dilution was used), and the volume filtered is 5 mL. To calculate the volume plated, we need to know the diameter of the membrane filter used. Let's assume it was 47 mm, which corresponds to a surface area of approximately 17.36 cm^2. Using a conversion factor of 1 cm^2 = 0.1 mL, we can estimate the volume plated as:

Volume plated = Surface area x Depth of agar = 17.36 cm^2 x 0.2 cm = 3.472 mL

Plugging in the values, we get:

Concentration (CFU/100 mL) = (5 / 3.472) x (20 / 5) x 100 = 288 CFU/100 mL

Therefore, the concentration of total coliforms in the water sample is 288 CFU/100 mL.

C. Based on the high concentration of coliforms in the water sample, it is not safe to drink. Coliforms are indicators of fecal contamination and their presence in drinking water can indicate the presence of harmful pathogens.

D. Non-fecal coliforms form white colonies because they do not ferment lactose to produce acid, and therefore do not cause a pH change in the medium that would result in a blue color. Fecal coliforms, on the other hand, can ferment lactose and produce acid, which results in the blue color of their colonies.

E. If we were to gram stain one of the blue colonies on the plate, we would predict that it is a gram-negative bacterium. Gram-negative bacteria typically appear pink or red after staining, and this color indicates that the bacteria have a thin peptidoglycan layer in their cell walls and an outer membrane containing lipopolysaccharides. The shape of the bacteria would depend on the species, but coliforms are generally rod-shaped (bacilli).

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Answer:

hi there person :)

Answer:

The first effect of the rising global temperature is that as oceans warm, seawater expands, taking up more space in the basin and causing the level of the ocean to rise. Secondly, ice melts on land, adding water to the ocean.

Explanation: