Which of the following best describes the composition of a
nucleotide?
a
Ob
a five-carbon sugar attached to a phosphate group
and a nitrogenous base
a carbon atom joined to hydrogen and three
functional groups
a chain of carbon atoms with a carboxyl group
bonded to one end
a pair of six-carbon rings attached to each other
Ос
Od

In terms of ecological impact, shrimp farming is less destructive than shrimp trawling - False

The primary goal of commercial shrimp fisheries is to maximise their target catch in order to maximise profit. Using trawl nets, commercial shrimp fisheries achieve this purpose. Trawling is a particularly damaging type of fishing that, regrettably, ignores the effects on the environment. Trawling with beam or otter trawls increases the amount of shrimp that can be caught, but it also increases the amount of by-catch that can be landed. By a wide margin, by-catch outweighs shrimp and other target species that are collected in trawls. Most by-catch, which includes young fish, non-commercial fish, and benthic debris, is landed and thrown back into the water dead. By-catch is then dumped into the water, where it contaminates it and kills fish.

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1. Three characteristics that all species belonging to the plant kingdom have in common are:

The number of stomata in tropical plants and desert plants will differ due to differences in their environments. Tropical plants grow in a warm and humid climate, where water is abundant. Therefore, they have a high number of stomata on their leaves to allow for gas exchange and transpiration, which helps cool the plant and maintain its internal water balance.

Desert plants, on the other hand, grow in hot and dry conditions where water is scarce. As a result, they have a lower number of stomata on their leaves to reduce water loss through transpiration and protect themselves from dehydration.

3. Both ground tissue and dermal tissue are important to a plant, but they serve different functions. Ground tissue makes up most of the plant body and is responsible for functions such as photosynthesis, storage, and support. Dermal tissue, on the other hand, is the outer layer of the plant and serves as a protective barrier against external threats such as pathogens and excessive water loss.

While both tissues are essential to the plant's survival, the importance of one over the other depends on the specific environmental conditions and challenges that the plant is facing. For example, in a dry environment, dermal tissue may be more important to protect against water loss, while in a dense forest, ground tissue may be more important for photosynthesis and support.

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Answer:

the sympathetic nervous system

Explanation:

Answer:

Explanation:

they can not chose to adapt. adaptations occur over a very long period time(darwinism)  Evolution is not selective in the sense that the organism being changed can choose.

Answer: the answer is yes

Explanation: in Florida we have multiple different invasive species which are destroying the environment.

The given statement "the most energetically favorable arrangement of amphipathic molecules is a bilayer with its edges exposed to water"  is true because it ensures that the energetically favorable interactions between hydrophilic regions and water molecules are maintained.

Amphipathic molecules have both hydrophilic (water-loving) and hydrophobic (water-fearing) regions. In aqueous environments, they spontaneously form structures that minimize the contact of hydrophobic regions with water.

The bilayer formation involves a two-step process:

1. Amphipathic molecules come together with their hydrophilic regions facing the water and hydrophobic regions facing away from it. This arrangement minimizes the energy required for the hydrophobic regions to interact with the water molecules.
2. These molecules further arrange themselves into a bilayer, where two layers of amphipathic molecules align in such a way that their hydrophilic regions are exposed to water on both sides and their hydrophobic regions are sequestered in the middle. This further minimizes the unfavorable interactions between hydrophobic regions and water molecules.

Such bilayer structures are essential in the formation of cellular membranes, where the amphipathic lipid molecules create a barrier between the aqueous environment inside and outside the cell, while still allowing selective passage of certain molecules.

The edges of the bilayer remain exposed to water, ensuring that the energetically favorable interactions between hydrophilic regions and water molecules are maintained.

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Answer:

Most cells are diploid; they have two copies of each chromosome. Such cells, called somatic cells, make up most of the human body, such as skin and muscle cells. Cells differentiate to specialize for different functions. ... The cells of the inner cell mass go on to form virtually all of the tissues of the human body.

Answer:

don't know how to do it but going to be back once I figure it out

Answer: 1,000kcal

10% of 10,000 is 1,000.

The amount of energy transferred if 10% is transferred to the primary  consumers is 1000kcal

Given the following parameters

Amount of kcal the producer have = 10,000kCal

Percentage transferred to the primary consumers = 10% of the amount produced

Get the amount of energy transferred;

\(Energy \ transferred = \frac{10}{100} \times 10,000\\ Energy \ transferred =0.1 \times 10,000\\Energy \ transferred =\frac{10,000}{10}\\Energy \ transferred =1000kcal\)

Hence the amount of energy transferred if 10% is transferred to the primary consumers is 1000kcal.

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One environmental impact that Hurricane Katrina would not have caused is an increase in air pollution due to industrial emissions.

Hurricane Katrina, a devastating natural disaster, had numerous environmental impacts on the affected regions. However, there are certain environmental effects that Hurricane Katrina would not have caused. One such impact is an increase in air pollution resulting from industrial emissions.

1. Flooding and Water Contamination: Hurricane Katrina led to extensive flooding in the Gulf Coast states. The storm surge and heavy rainfall caused widespread inundation, damaging infrastructure and contaminating water sources. The floodwaters carried pollutants, debris, and chemicals, leading to water pollution. This contamination had detrimental effects on aquatic ecosystems, including fish and other marine life.

2. Habitat Destruction: Another environmental impact of Hurricane Katrina was the destruction of habitats. The storm's powerful winds uprooted trees, demolished coastal areas, and disrupted ecosystems. This destruction affected the natural habitats of various species, causing loss of biodiversity and potential long-term ecological consequences.

3. Coastal Erosion: The Gulf Coast region experienced significant coastal erosion as a result of Hurricane Katrina. The storm's strong winds and storm surge stripped away coastal vegetation and eroded beaches, further altering ecosystems and threatening the stability of coastal communities.

4. Disruption of Wildlife: The storm's destructive force disrupted wildlife populations in the affected areas. Many animals, including birds, mammals, and reptiles, faced displacement, injury, or even death as a result of the hurricane. The disturbance to wildlife and their habitats had ecological repercussions and affected the delicate balance of the ecosystems.

5. Increase in Air Pollution: While Hurricane Katrina had several severe environmental impacts, it did not directly contribute to an increase in air pollution caused by industrial emissions. The storm primarily affected coastal regions, and its main destructive forces were related to flooding, wind damage, and water contamination rather than the release of pollutants into the atmosphere.

In conclusion, Hurricane Katrina caused extensive environmental damage, including flooding, habitat destruction, coastal erosion, and wildlife disruption. However, it did not contribute to an increase in air pollution resulting from industrial emissions.

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Answer: Gram-positive bacteria.

Explanation:

Gram-positive bacteria are those bacteria that stain dark blue or violet by Gram staining. This is due to the structure of the cell envelope, since they possess a cell wall composed of a thick layer of peptidoglycan, which surrounds the previous one. The cell wall is attached to the cytoplasmic membrane by lipoteichoic acid molecules. The peptidoglycan layer confers high resistance to these bacteria and is responsible for retaining the stain during Gram staining. Unlike gram-positive bacteria, gram-negative bacteria have a second lipid membrane outside the cell wall and a single peptidoglycan layer.

An antibiotic is a chemical substance produced by a living being or synthetically derived, which kills or prevents the growth of certain classes of sensitive microorganisms, such as bacteria. An antibiotic could be bacteriostatic if it prevents the growth of bacteria or bactericidal if it destroys them.

Antibiotics usually attack cell walls, such as β-lactams that act on the peptide chains of the bacterial cell wall. That is, they act by inhibiting peptidoglycan synthesis. This is why gram-positive bacteria are susceptible to certain types of antibiotics because they possess a large amount of peptidoglycan.

Answer:

The answer is wheat.

Answer:

The answer choice which best supports the idea that most attempts by scientists to create new chemical elements will fail is that: (D) scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success.

A chemical element can be defined as a pure substance that comprises atoms having the same atomic number (number of protons) in its nuclei and as such, it is the primary constituent of matter. Also, a common characteristics for all chemical elements found on the periodic table is mass and volume.

In Chemistry, some examples of a chemical element include the following:

In this scenario, we can reasonably infer and logically deduce that a statement which indicates that an attempt by scientists to create new chemical elements will fail is stating that "scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success." because an experiment to create new chemical elements must be tested and they all should have multiple successful results.

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Complete Question:

Which of the following answer choices BEST supports the idea that most attempts by scientists to create new elements will fail?

(A) Scientists have to create a target with a carefully chosen atom; this is a process that takes months.

(B) Scientists have to smash atoms together and get them to stick; a positive charge makes them repel each other.

(C) Scientists have to bombard particles with specific protons; specialized atoms combine with neutrons.

(D) Scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success

Answer:
A universal common ancestor (UCA).

Explanation:
According to Darwin, all life on Earth evolved from a universal common ancestor; that is, the very first organism on Earth. If you pick any living plant or animal on Earth and trace its lineage back far enough, billions of years ago, you will eventually find the UCA. Every species on Earth is united to every other species through their connection with the UCA.

The UCA itself was probably a single-celled organism of some kind and died about 4.1 billion years ago. But through it, every species, be it human, dog, tree, or mushroom, shares this one ancestor with everyone else.

Species also have what's called a lowest common ancestor with each other, much more recent than the UCA. For example, the LCA between humans and chimpanzees probably lived and died around 4 million years ago.

If the half-life of uranium-235 is 4. 5 billion years, then 2.25 billion years have gone by after 0.5 half-lives have elapsed.

The half-life of a radioactive substance is the time it takes for half of the initial amount of the substance to decay.

If the half-life of uranium-235 is 4.5 billion years, then after one half-life, half of the initial amount of uranium-235 will have decayed. After 0.5 half-lives, we can calculate the amount of time that has elapsed as follows:

0.5 half-lives = 0.5 x 4.5 billion years

                      = 2.25 billion years

Therefore, if 0.5 half-lives have elapsed, then 2.25 billion years have gone by.

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Answer: Natural resources are an extremely important part of human existence on Earth.

Explanation

Resources such as air, water, and food are vital for the survival of human beings on Earth. Without these resources, humans and other living organisms will not be able to sustain and fulfill their basic needs.

Natural resources serve as the foundation for economic activities. It provides us with minerals and fossils which help us to gather the necessary pieces of equipment for completing our basic needs.

Natural resources particularly forests and oceans play a significant role in regulating the Earth's climate. It eliminates the impact of greenhouse gases to some extent.

Natural resources are a source of energy which we receive in the form of wind energy solar energy geothermal energy etc.

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Answer:

a) Cats show incomplete dominance which means the kitten can be born with full length tails, short length tails and without tails.

b) The genotype of the parent will be heterozygous (Tt ) and the kittens will be:

Genotype | Fenotype

-TT | (long tail)

-Tt | (short tail)

-tt | (no tail).

answer:

So daughters get 2 X chromosomes from the mom and dad and if the dad has hemophilia the daughter would get it too and sons would not get because they get Y chromosome from their dad and hemophilia is found in the X chromosome because the X chromosome is the one that has the instructions for making the clotting factor proteins.

Explanation:

A father who has hemophilia has the gene and passes it on to his daughter because daughters get two X chromosomes, one from their mother and the other from their father. This is why daughters of men with hemophilia are called obligate carriers. Since sons only receive a Y chromosome from their father, they would not have inherited hemophilia.

Hope this make sense!

Answer:

The answer easier

Explanation:

It's the most commonly used form of classification or type of identification key used in biology as it simplifies identifying unknown organisms. Typically, a dichotomous key for identifying a particular type of object consists of a specific series of questions. When one question is answered, the key directs the user as to what question to ask next. Dichotomous keys typically stress identifying species by their scientific name, as each individual species has a unique scientific name.

Answer:

Protein synthesis errors can also produce polypeptides that show the benefit of toxic activity. In rare cases, the defect may provide a different or pathological function to a normally wrapped protein. Often, errors disrupt the fold, and a well-threatened molecule can be toxic. Perhaps the protein will not be made or made improperly. When mutations occur in gametes, the DNA of the offspring will be positively, negatively, or neutral.

Hope it helps!

Answer:

If a rock has a volume of 2 cm³ and a mass of 12 gr, its density will be 6 gr/cm³.

Explanation:

Density is a parameter used in chemistry and physics, which relates the mass and volume of a solid or compound, establishing the amount of volume that occupies a given mass.

If we observe the density formula, we can see that the greater the mass, the greater the density, while the volume is inversely proportional, so the lower the volume, the greater the density. This formula is:

ρ = m/V

Therefore, according to the mass and volume of the rock

ρ = 12 grs / 2 cm³

ρ = 6 grs/cm³

Being the density of the rock equal to 6 gr/cm³.

C-14 half-life is the time it takes for half of the isotope mass to decay into its daughter form. Line graphs are the best way to represent data about half-lives and the amount of isotope (gr).

Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.

Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.

The radioactive C14 nucleus contains 6 protons and 8 neutrons and has a half-life of 5730 years.

The term half-life is a reference. It means that an organism that has been dead for 5730 years has half the C14 amount or concentration than the same organism had when it was alive.

In other words, the half-life is the time it takes for half the mass of this isotope to become its daughter form.

Knowing the half-life of an element is useful to determine the age of the dead matter.

C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.

An easy way of representing the change in mass of the isotope through the years is to make a line graph, which is easy to interpret and compare the information.

In this example, our line graph must represent the number of half-lives related to the amount of parent isotope in grams.

The table details the years and the amount of isotope. So, by kowing the half-life of C-14, we can get how many half-lives there are.

5,700 years ---------- 1 half-life

11,400 years--------- X = 2 half-lives ⇒ (5700 x 2) or (11,400/5,700)

17,100 years -------- X = 3 half-lives ⇒ (5700 x 3) or (17,100/5,700)

22,800 years ------ X = 4 half-lives ⇒ (5700 x 4) or (22.800/5,700)

28,500 years ------ X = 5 half-lives ⇒ (5700 x 5) or (28,500/5,700)

34,200 years ------ X = 6 half-lives ⇒ (5700 x 6) or (32,200/5,700)

39,900 years ------ X = 7 half-lives ⇒ (5700 x 7) or (39,900/5,700)

45,600 years ------ X = 8 half-lives ⇒ (5700 x 8) or (45,600/5,700)

51,300 years ------- X = 9 half-lives ⇒ (5700 x 9) or (51,300/5,700)

Now, we can make a new table,

Number of half-lives       Carbon-14 (g)

                0 ..............................10,000

                 1 ...............................5,000

                 2................................2,500

                 3 ................................1,250

                 4 ................................  625

                 5 ................................  312

                 6 ................................  156

                 7 .................................   78

                 8 .................................   39

                 9 .................................   20        

Finally, we can make the line graph using the data of this new table. You will find it in the attached files.

In conclusion, the best graph you can make is a line graph, and if they ask you to graph the number of half-lives and give you the number of years, you can just make the conversion using the half-life of the isotope.

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Cell in the nervous system that transmits information a neuron. The nervous system sends information from the brain to the spinal cord and then to the nerves throughout the body via small cells called neurons (NEW-ronz).

Axon. The axon is a long fiber that runs from the cell body to the terminal endings and delivers brain signals. The bigger the axon's diameter, the faster it conveys information. Some axons are wrapped with myelin, a fatty material that functions as an insulator.

The nervous system sends information from the brain to the spinal cord and then to the nerves throughout the body via small cells called neurons (NEW-ronz). Billions of neurons collaborate to form a communication network. Distinct neurons perform different functions.

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The correct answer is option B. natural selection.

Natural selection is a natural process in which well-adapted organisms tend to survive and reproduce more than less-adapted organisms. For example, tree frogs can be eaten by snakes and birds. This change means that some individuals have more environmentally-adapted traits than others, and their offspring are scarce. There is no doubt that natural selection has shaped the evolution of humankind in our farther past.

Natural selection is an inevitable result of three principles. Most traits are inherited, producing more offspring than can survive, and offspring with more favorable traits survive and have more offspring than individuals with less favorable traits.

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Answber:

the answer is B

Explanation:

The most effective method by which antibiotic resistance can be decreased in bacteria is to reduce the usage of antibiotics, improve the use of vaccines, and follow proper hygiene practices. Antibiotic resistance is the ability of bacteria to resist the effects of an antibiotic that was once able to treat infections caused by the bacteria.

The bacteria that survive can develop immunity to that antibiotic, making it ineffective as a treatment option.

The most effective method by which antibiotic resistance can be decreased in bacteria is to reduce the usage of antibiotics, improve the use of vaccines, and follow proper hygiene practices.

Below are the details on how this is accomplished:

Reduce the usage of antibiotics: Excessive usage of antibiotics promotes the development of antibiotic-resistant bacteria. To combat this, the use of antibiotics should be restricted to situations where they are genuinely necessary, such as bacterial infections that cannot be treated by other means.

Improve the use of vaccines: Vaccines can assist in preventing the spread of infection, reducing the need for antibiotic treatment. Effective vaccines can also help to prevent bacterial infections in the first place.

Follow proper hygiene practices: By implementing basic hygiene practices such as regular hand washing, covering your mouth and nose while coughing or sneezing, and avoiding close contact with those who are unwell, it is possible to avoid the spread of bacterial infections.

These measures are essential in preventing the spread of antibiotic-resistant bacteria, as well as the development of new antibiotic-resistant strains of bacteria.

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Answer:

1 Thylakoid membranes

Explanation:

The cytoplasm is not involved in photosynthesis

Cytoplasm is not a structure for photosynthesis but houses other organs of photosynthesis such as the chloroplast.

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Answer:

Crude oil is used to make the petroleum products we use to fuel airplanes, cars, and trucks; to heat homes; and to make products such as medicines and plastics. Although petroleum products make life easier, finding, producing, and moving crude oil may have negative effects on the environment More than 12 million people live within 1/2 mile of these facilities, and many are exposed to air and water pollution on a daily basis, which can lead to an array of health issues.       Bonus.....People with asthma are at greater risk from breathing in small particles. The particles can make asthma worse. Both long-term and short-term exposure can cause health problems such as reduced lung function and more asthma attacks

Explanation:

This is what i have hope it helps! :)

Answer:

The stroma is the watery part found in the inner membrane, which contains circular DNA molecules, RNA, ribosomes, lipids, granules of starch, among other substances. The chloroplast genetic process and photosynthesis reactions take place in the stroma. Thylakoids are flattened sacs, or vesicles, that form part of the inner membrane structure of the chloroplast to initiate the light-dependent photosynthesis reaction.

Explanation:

Chloroplasts are typical and exclusive organelles of plant cells that possess chlorophyll. It also has a double membrane (external and internal) and between them an intermembrane space. The inside is filled with a gel called a stroma. The stroma surrounds the thylakoid and grana within the chloroplast. It presents a DNA independent of the nucleus and plastoribosomes. Immersed in the stroma, there are flattened sacs called thylakoids or lamellae, the interior of which is called lumen. Thylakoids can spread throughout the stroma or stack in bundles called grana. Enzyme systems are located in the membrane of grana or thylakoids that capture energy from the sun and carry out the transport of electrons to form ATP.

Answer:

B I think it's the right answer good luck

Answer:

Black bear

Explanation:

im the original answer (just in case somebody says otherwise)

Answer:

honey badger

Explanation: