How are hydrogen bonds different from covalent bonds?

A) The atoms in hydrogen bonds have valence electrons

B) The compounds that result from hydrogen bonds contains carbon

C)Covalent bonds are organic

D) Hydrogen bonds are weaker than covalent bonds and form between partially charged atoms or molecules

The following are the five major spheres of the Earth:  

1. Geosphere: It comprises Earth's mantle, crust, and core, that is, the solid proportion of the Earth.  

2. Biosphere: It comprises all the species on Earth, as well as, the environments in which they thrive.  

3. Atmosphere: It comprises the gases surrounding the Earth.  

4. Cryosphere: It comprises the ice sheets of Earth as well as the environments in which they thrive.  

5. Hydrosphere: It comprises the water in Earth's seas, oceans, glaciers, rivers, lakes, and atmosphere.  

The correct answer is option D, that is, a person spends one hour each day under the ultraviolet rays of a tanning bed.  

The UV, or ultraviolet light from the sun, us a non-ionizing radiation that can cause DNA mutations. It does this by making the formation of pyrimidine dimers. Direct destruction of DNA can take place when DNA directly absorbs a UVB photon.  

The UVB light makes thymine base pairs next to each other in the genetic arrangements to combine together in the pyrimidine dimers. It has been shown that the patches of skin chronically exposed to sunlight exhibit up to 10 times more cancer-producing gene mutations in comparison to the skin, which is usually safeguarded from the sun.  

Answer:

hi its D: a person spends one hour each day under the ultraviolet rays of a tanning bed

Explanation:

PLATO

i could be wrong but my assumption for this question would be the answer of A

Option C) Gravity, not the strong nuclear, weak nuclear, or electromagnetic forces, fails to contain fusion in a dying star, potentially leading to the formation of a black hole. Gravity's overwhelming force can collapse a star's core beyond any known support, indicating its importance in both stellar life cycles and the structure of galaxies.

In stars that are near death, gravity can no longer contain fusion. In the life cycle of a star, gravity plays a crucial role in sustaining the process of nuclear fusion that powers the star. However, when a star exhausts its nuclear fuel, gravity causes the star to collapse.

For very massive stars, if the remaining mass of the star's core is more than about three times that of the Sun, no known force can prevent the star from collapsing into itself and potentially forming a black hole. A black hole's gravity is so strong that it can prevent light from leaving, which is why black holes are often detected via their gravitational effects on neighboring stars or clouds of gas and dust.

Therefore, the correct answer is C) Gravity.

As demonstrated by long-range mapping of restriction endonuclease recognition sequences and genomic cloning, we found that the human genes encoding interleukin 3 (IL 3) and granulocyte/macrophage colony-stimulating factor (GM-CSF) are tandemly arrayed on the long arm of chromosome 5, separated by 9 kilobases (kb) of DNA. This close physical linkage of genes with similar structure and biologic function suggests that these cytokines may have evolved from a common ancestral gene. This linkage in evolution of two relatively divergent genes further implies that some of the other lymphokine and cytokine genes that appear to share as much or more sequence similarity than do IL 3 and GM-CSF may be distantly related members of a cytokine gene family.

The answer is B. Lipids

Hope this helps

Answer: The matching mRNA codon for AUG anticodon is - UAC.

UAC codes for tyrosine.

mRNA is converted into protein through a process called translation ( occurs in the cytoplasm of cell). During this process, tRNA ( transfer RNA) delivers specific amino acid ( carried by amino acid acceptor site of tRNA) to the ribosome that matches with the codons ( sequence of three nucleotides in mRNA).

The anticodon carried by the anticodon site of tRNA molecule is complementary ( A pairs with U and G pairs with C) to the codon present in the mRNA sequence.

Thus, UAC is the codon in the mRNA that corresponds to the anticodon AUG.

The mRNA codon that matches the tRNA anticodon AUG is UAC. This matching is based on complementary base pairing. In this case, Adenine (A) matches with Uracil (U), and Guanine (G) matches with Cytosine (C).

In the ribosome, during protein synthesis, an mRNA codon corresponds to a matching tRNA anticodon. The anticodon and codon pairs through complementary base pairing. If the tRNA anticodon is AUG, this pairs with an mRNA codon of the sequence UAC, since Adenine (A) pairs with Uracil (U), and Guanine (G) pairs with Cytosine (C). Therefore, the mRNA codon matching the tRNA anticodon AUG would be UAC.

https://brainly.com/question/32197142

#SPJ6

Answer:

This is sample from Edmentum

Explanation:

There have been many occasions when people have been good to me without expecting anything in return. I think and hope that many of my actions, too, have been out of goodwill and not with any personal motive. This happened some years ago and I believe that this has inspired me to do good deeds whenever an opportunity presents itself. My mother is a single parent and this incident occurred soon after we moved to the town that we live in currently. She had to undergo an emergency operation. We didn’t have any friends or relatives in the town. The neighbors turned out to be great people. They didn’t know us but each one of them pitched in, taking turns to invite me home for meals while my mother was hospitalized, visiting my mother at the hospital, and keeping our spirits up. That week was difficult for us but during that time, we made some incredible friends.

Altruism is a behaviour in which a person help other people, just out of desire to help, without wanting anything in return.

An example of altruistic behaviour is: Suppose you are in a bus, and you see an old woman standing, and you offer her your chair, not because you have to but out of desire to help and that makes you happy.

Altruism is defined by many disciplines. There is no single perspective regarding altruism but rather many perspectives from different psychologist.

To begin with, psychology has found many processes by which people might learn about and care about the conditions of others.

Psychology says that, though Altruism is a kind behaviour, but it's not always true that altruism will and will not lead to helping behaviour.

Altruism is a selfless behaviour, but it's sometime leads to danger to the person who help and cause the person to feel overwhelmed.

Although it is a positive behaviour and people should keep altruistic behaviour and help people.

To know more about altruism, visit here:

https://brainly.com/question/25776081

Gene expression is where the mRNA is made. If there's an error in transcribing the DNA  into mRNA there could be a major effect on consequent gene expression if:

1. the original gene is involved in gene expression itself (e.g. the RNA polymerase)...if it's not made correctly you would have serious future problems.

2. if the original gene is for a protein involved in further gene expression (e.g. transcription factor/regulator) - if made incorrectly it may not be there to properly control gene expression so you could get other genes expressed when they shouldn't be, or not expressed when they should be.

With the development of technologies and advancement in facilities, we are also disturbing nature. For example deforestation, which is cutting of trees and plants for spare land for the use of human activities.

Deforestation can have serious effects on air and water pollution, climate change, soil erosion, loss of biodiversity.

To stop this destruction due to deforestation an individual can:

Final answer:

It takes 951,750 joules of energy to vaporize 423 grams of water at 100 degrees Celsius and 1 atm, as the heat of vaporization of water is about 2,250 J per gram.

Explanation:

To determine how many joules of energy are required to vaporize 423 grams of water at 100 degrees Celsius and 1 atm, we use the heat of vaporization of water, which is about 2,250 J per gram. The calculation is straightforward: we simply multiply the amount of water in grams by the heat of vaporization per gram.

Energy required (Q) = mass of water (m) × heat of vaporization (ΔHvap)

Q = 423 g × 2,250 J/g

Q = 951,750 J

Therefore, it takes 951,750 joules of energy to vaporize 423 grams of water at 100 degrees Celsius and 1 atm.

The right answer is A.

Lactic fermentation is a catabolic process, a fermentation, having as a starting point glycolysis, which produces an acid, lactic acid used to reoxidize NADH to NAD+, and by the way it produces energy in form of ATP.

In other words, lactic acid fermentation is a biological process by which sugars such as glucose, fructose, and sucrose are converted into cellular energy and metabolic byproduct, lactate. It is a lactic ferment that intervenes.

Answer:

A. The bacteria could no longer regenerate the NAD+ needed for glycolysis, so it would stop producing ATP.

Final answer:

Mitosis and meiosis are both cell division processes, but they differ in their mechanisms and outcomes. Meiosis includes unique stages such as prophase I and metaphase I, where homologous chromosome pairing and crossing over occur. Metaphase is a stage shared by both processes, but it functions differently in meiosis I compared to mitosis and meiosis II.

Explanation:

Comparing Mitosis and Meiosis

Both mitosis and meiosis are processes of cell division. Mitosis consists of four stages: prophase, metaphase, anaphase, and telophase, culminating in cytokinesis. In meiosis, there are two rounds of cell division, meiosis I and meiosis II, each with similar stages to mitosis, but with important differences. Meiosis is unique in that it has the stages of prophase I and metaphase I, where homologous chromosomes pair up and undergo crossing over, and anaphase I, where these homologous pairs are separated into two cells, reducing the chromosome number by half (from diploid to haploid).

Metaphase appears in both mitosis and both meiotic divisions. However, it has a unique characteristic during meiosis I where homologous chromosomes line up in pairs; in mitosis and meiosis II, individual chromosomes line up at the metaphase plate. The behavior of chromosomes during meiosis leads to genetic variation among the four haploid cells produced, while mitosis results in the production of two genetically identical diploid cells.

The right option is D 6CO2 + 6H2O --> C6H12O6 + 6O2

This equation shows that carbon dioxide and water are used with light energy to produce glucose sugar and oxygen gas.

Photosynthesis is a process by which plants and other autotrophs use energy from sunlight to produce nutrients from carbon dioxide and water. Plants absorb water through the roots, carbon dioxide from the air, and light energy from the Sun, to produce glucose and oxygen.

The correct equation for photosynthesis is 6CO2 + 6H2O --> C6H12O6 + 6O2. In this complex process, carbon dioxide and water are transformed into glucose and oxygen with the help of sunlight.

The correct equation that represents the reactants and products of photosynthesis is option D: 6CO2 + 6H2O --> C6H12O6 + 6O2. In this process, carbon dioxide (CO2) and water (H2O) are the reactants which, when exposed to sunlight, get transformed into glucose (C6H12O6) and oxygen (O2), which are the products. While the equation seems simple, it represents a complex multi-step process that plants use to convert light energy into chemical energy.

https://brainly.com/question/29764662

#SPJ3

Answer: D complex carbohydrate; simple sugar

Explanation:

The 4 macromolecules are Proteins, lipids, nucleic acids and carbohydrates.

The component piece for each are as follows:

Protein = amino acid

Nucleic acid = nucleotides

Lipids = fatty acids, glycerol

Complex carbohydrates (polysaccharides) = simple sugars such as glucose

Saltatory Conduction

During an action potential, the charge seems to “jump” from node to node rather than flow continuously down the axon, a process known as: Saltatory Conduction .

Saltatory conduction is the faster distribution of action potentials across myelinated axons from one node of Ranvier (breaks in the wrapping of myelin insulation) to another node, which leads to increased speed of action potentials. The only area along the axon where ions are exchanged is the uninsulated nodes of Ranvier.

Answer:

Plants: produce seeds, can photosynthesize,  can absorb nutrient from soil, may have rhizomes.

Fungi: are heterotrophic, may have aseptate hyphae.

Both plants and fungi: have cell walls

Explanation:

Fungi is the kingdom that includes the heterotrophic organisms. They have cell wall made of chitin. Many thread like structures called as hyphae make the fungal body. Hyphae may or may not be divided by septa.

Plants are autotrophic and make their food through the process of photosynthesis. Some plants produce seeds as a means of reproduction. Plants have roots to absorb nutrients from soil. Rhizome refers to the underground stem that resembles root and serves the function of food storage and means of asexual reproduction.

Answer:

I got a 100%

Explanation:

Naturalists basically describe the idea or the concept of naturalism which we mean that this is the belief that all the existing material matter, that there is no before-mentioned thing as a soul and that people have no purpose in life. The natural perspective of the biosphere is that the biosphere is what we loosely call nature. All sciences eventually study nature. Natural sciences focus on how species live together, as well as the importance of inanimate objects and patterns.

Here are some o the points of a content that Christians must keep in mind:

Naturalism is developed completely on a basis of belief. Naturalism cannot prove that there is no spiritual existence. It cannot consider for: the final existence of matter, the presence of life, the actuality of consciousness, or for how different lifestyles, modes or forms came into being. Their statements in all of these areas are not based on science.

If there is a problem to the availability and quality of water, the authorities should consult a hydrologist. This is because the problem has to do with water, and hydrologists keep track of exactly that problem, the quality and availability of water.

Answer:

hydrologist

Explanation:

its B let me know if I'm right!

The best chance for bringing back the extinct thylacine involves de-extinction technologies like cloning and genetic engineering, utilizing DNA from preserved specimens and a surrogate host from a related species.

The thylacine, an extinct marsupial that once lived in Australia and Tasmania, might potentially be brought back using advanced DNA technologies. The best chance for resurrecting the thylacine lies in de-extinction technologies such as cloning and genetic engineering. These technologies would involve extracting DNA from preserved specimens, repairing any damage using the genetic material of a closely related species like the Tasmanian devil, and then gestating the embryo in a surrogate host. Although the process is complex and has many ethical and technical challenges, it represents the most feasible method currently envisioned for attempting to bring back an extinct species like the thylacine.

Answer:

The answer is D

Explanation:

Oh would you look at that *cough I am close to you now.

Some cells will more mitochondria than others. The fat cells will have many mitochondria because they store a lot of energy than the others. Muscle cells also have many mitochondria, which allows them to respond quickly to the need for doing work.

Answer:

igneous

Explanation:

This kind of rock are the ones that are formed when the magma cool down, actually it name come from "ignis" that in Latin mean fire. There are two kind of cooling down. If the process is to fast, then it will form the volcanic rock that is quite common in some old volcanoes, or the volcanoes that was erupted.

If the process of being cold was a little bit slow, so it will form some crystal rocks.

An example is the basalt rock, a common material used in building.

Option D is the correct answer. During the Beagle voyage, Charles Darwin spent five years traveling the world and observing the natural world around him. He collected a wide variety of specimens, including plants, animals, and fossils, and carefully documented where they were found and under what conditions.

He also took extensive notes on the behavior, anatomy, and distribution of living plants and animals in their natural habitats.Darwin's observations were not limited to the living world.

He also paid close attention to geological formations and changes in the landscape, recording detailed information about the rocks, soil, and other features he encountered. He was particularly interested in the patterns he saw in the distribution of different species, as well as the similarities and differences he observed between related species.

All of the data that Darwin collected on the Beagle voyage ultimately contributed to his later development of the theory of evolution by natural selection.

Therefore, By carefully documenting and analyzing the natural world around him, Darwin was able to identify patterns and connections that had not been previously recognized, and to formulate a revolutionary new theory about how life on Earth had changed over time.

Learn more about Darwinism at :

https://brainly.com/question/28042148

#SPJ3

The integumentary system (skin) reacts different on different sun intensity (different length exposure to sun).

For example, moderate exposure to the sunlight contributes to the production of melanin and vitamin D by the body. On the other hand, high exposure to sunlight can have negative health effects such as sunburn, which is an inflammatory response to DNA damage caused by UV radiation.  

Cells are the basic units of life. They can exist by themselves, like bacteria, or apart of a larger organism, like our cells. Viruses are non-living infectious particles that are much smaller then a cell, and need a living host to reproduce. They cannot reproduce outside of a living host cell, nor can they be seen without an electron microscope.  

The correct answer is option A, that is, denatures.  

The extreme temperatures lead to the unfolding of a polypeptide chain resulting in a change in composition and generally a loss of function. If the protein working as an enzyme denatures, it will make that protein to lose its enzymatic activity.  

As the temperature of a solution comprising the protein is elevated, the extra heat results in bending and twisting of bonds. As proteins start to denature, the secondary composition of the protein is lost and adopts a random coil configuration. The covalent association among the amino acid side chains like disulfide bonds also gets lost.  

The main producers in aquatic environments are phytoplankton, which includes algae and cyanobacteria. These photosynthetic organisms form the base of the aquatic food web. They support primary consumers like zooplankton and higher-level consumers such as small fish.

In aquatic ecosystems, the primary producers are crucial for supporting the food web. The main producers in these environments are microscopic organisms collectively known as phytoplankton.

Phytoplankton includes a variety of photosynthetic organisms such as algae and cyanobacteria, which convert sunlight into energy through the process of photosynthesis.

Phytoplankton is composed of several groups, including diatoms, dinoflagellates, and coccolithophores. Diatoms, for example, are single-celled algae encased in silica shells and are highly efficient at photosynthesis, contributing significantly to marine productivity.

These producers form the base of the food web, supporting primary consumers such as zooplankton.

Zooplankton, which includes small crustaceans and other microscopic animals, feed on phytoplankton and, in turn, provide food for secondary consumers like small fish.

This intricate food web structure highlights the critical role of phytoplankton in maintaining the ecological balance in aquatic environments.

Answer:

protein and vitamin deficiency

Explanation:

Deb is very skinny and she doesn’t seem to have a lot of muscles she also complains of bleeding gums and no nail growth, which are symptoms of protein and vitamin deficiency

Answer:

Explanation:

Deb is very skinny and she doesn’t seem to have a lot of muscles she also complains of bleeding gums and no nail growth, which are symptoms of protein and vitamin deficiency