Bacteria and archaea that reduce nitrate or sulfate so that they can incorporate the nitrogen or sulfur atom into an organic molecule are performing _________ reduction. By contrast, when nitrate or sulfate are used as terminal electron acceptors, bacteria and archaea are performing _________ reduction.

Answer:

Deamination is the removal of an amino group from a molecule

Deamination is associated with deamination of protein​

Answer:

Our cells are bathed in isotonic fluids because the concentration of solutes inside and outside the cell is equal, even though the concentration of potassium ions is not the same. This is due to the fact that potassium ions are actively pumped in and out of the cell by special pumps.  This osmotic pressure helps to prevent the cells from bursting as the pressure created is strong enough to keep the cells in tact.

The pumping of these ions creates a steady balance in which the concentration of potassium ions inside and outside the cell is equal. This balance allows for the cells to maintain their osmotic pressure, which is the pressure created by the difference in concentration of solutes inside and outside the cell. This osmotic pressure helps to prevent the cells from bursting as the pressure created is strong enough to keep the cells in tact.

The pumps that move the potassium ions also play a role in helping to maintain this osmotic pressure. The pumps actively move the potassium ions in and out of the cell to maintain the balance and the osmotic pressure needed to keep the cells in tact. Thus, our cells are bathed in isotonic fluids even though the concentration of potassium ions inside and outside the cells is not equal.

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Answer:

-0.33

Explanation:

Answer:

the 2nd one i believe

Explanation:

hope this helps :)

Answer:

Number 2

Explanation:

Answer:

protons and electrons

Answer:

protons and neutrons

Explanation:

Answer: This is called chlorine

Explanation: 18

Evolution, a process of change in a population over time, is brought about by natural selection.

There are three requirements for natural selection.

Natural selection is a process in which more environment-adapted organisms tend to survive and reproduce more frequently than less environment-adapted ones. For instance, birds and snakes occasionally consume tree frogs.

Natural selection affects an organism's phenotype, or its traits that interact with the environment, but any phenotype having a genetic foundation (heritable) that facilitates reproduction may spread more widely in a population.

Evolutionary developmental biology, which describes evolution at the molecular level, was made possible by the advent of molecular genetics. While random genetic drift can cause genotypes to progressively shift, natural selection continues to be the main mechanism for adaptive evolution.

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Answer:

B, C, and D

Explanation:

B- Variation, C- Overpopulation, and D- Adaptation

Natural selection leads to-

Natural selection leads to Evolution.

(Correct on edg)

.

Answer:

A: Cool, Dark Nebula

Explanation:

Before a star is born, the matter that will become the star exists as a interstellar gas and dust.  The stars are formed as a result of the force of gravity compresses atoms in the interstellar gas. Then the fusion reaction begins. During this fusion reaction the temperature gets extremely high and all the material evolves into a hot bright star.

Answer:

Girls have two X chromosomes  and boys have chromosomes (XY).

Explanation:

Girls have two X chromosomes (XX), and boys have one X and one Y chromosome (XY). Whether a baby will be a boy or a girl is determined at the time of conception.

Answer:

Explanation:Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green, such as the brown blades of giant kelp or the red leaves of certain plants. In plants, chloroplasts are concentrated particularly in the parenchyma cells of the leaf mesophyll (the internal cell layers of a leaf).

Patients with mutations that entirely abolish the androgen receptor's function and affect the phenotypic development of persons with XY chromosomes will manifest as phenotypically female.

Dose-Sensitive Sex Reversal Locus on Chromosome X, Gene 1 (DAX1), also known as Nuclear Receptor Subfamily 0, Group B, Member 1 (NR0B1), is a transcription factor that belongs to the nuclear hormone receptor superfamily and primarily functions as a transcriptional repressor.

Male-to-female sex reversal is associated with duplication of the DAX1/NROB1 gene because external genital differentiation ranges are unknown.

The XX males who are SRY-positive have two X chromosomes, one of which contains genetic material from the Y chromosome, making them phenotypically male but genetically female. Males and females differ by having one X and one Y chromosome in each diploid cell of their bodies.

The DAX1 protein may have a direct or indirect impact on how gonadal hormones regulate the hypothalamic-pituitary system.

The complete question is:

How would mutations that completely ablate the function of the androgen receptor impact the phenotypic development of humans with XY chromosomes?

(A). Patients would appear phenotypically female.

(B). Patients would appear phenotypically male with underdeveloped secondary sex characteristics.

(C). Patients would appear phenotypically male, but cannot produce sperm.

(D). Patients would express both male and female secondary sex characteristics.

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Answer:

l an a multicellular organism

Ability to capture smaller organism for food

Mutual Independence btw component cells

Increase in size, adaptation to environment

Answer:

300L

Explanation:

So basically 3.9 L is equivalent to 3900 Kg of glucose and when u minus 3900 to 144 is basically 3000 which is 300L

A. Morphology of ghost crab and a typical trilobite in terms of their body parts:

Ghost crab is a crustacean and possesses a hard exoskeleton that provides protection against predators. It has five pairs of legs. Its body is divided into two segments: the cephalothorax and the abdomen. The cephalothorax is covered by a carapace that protects the gills and internal organs. The eyes of the ghost crab are located on stalks that allow the crab to have a 360-degree vision.

A trilobite is an extinct arthropod that lived during the Paleozoic era. It has three parts: the head (cephalon), the thorax, and the pygidium. The cephalon was the most developed part of the trilobite and had a pair of compound eyes and antennae. The thorax was composed of a series of segments, each of which had a pair of legs. The pygidium was composed of a series of segments and served as the tail. The trilobite had an exoskeleton that was divided into three parts: the dorsal part, the ventral part, and the pleural part.

In terms of appendages, both ghost crab and trilobite have jointed appendages.

However, there are some differences. The appendages of the ghost crab are specialized for walking and digging. The first two pairs of legs are pincers that are used for capturing prey. The last three pairs of legs are used for walking and burrowing. The appendages of the trilobite are more varied and are specialized for different functions. Some appendages were used for swimming, some for crawling, and some for capturing prey.

Similarities: Both ghost crab and trilobite are arthropods. They have jointed appendages and a hard exoskeleton that provides protection against predators. Both have an anterior cephalothorax and a posterior abdomen.Differences: The body plan of ghost crab is bilateral, while that of trilobite is radial. Ghost crab is a living organism, while trilobite is extinct. Ghost crab has five pairs of legs, while the number of legs in trilobites varied. Trilobite has a more complex morphology with specialized appendages.

B. The reason why the ghost crab goes to the extra work of making two entryways: The crab makes two entryways to its burrow to improve ventilation and prevent the accumulation of toxic gases. The side branch allows fresh air to enter the burrow, while the main entrance allows the crab to exit quickly if it senses danger. The side branch also helps the crab to dispose of waste material. The burrow also serves as a protection against predators and harsh environmental conditions. The burrow provides a stable temperature and humidity that is necessary for the survival of the crab. The long burrow allows the crab to move deep into the sand where it can stay moist and avoid desiccation.

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Explanation:

6CO² + 6H2O = C6H12O6 + 6O2

Important note: Do NOT write an equal sign whenever you write it, make sure it's an arrow, otherwise the answer will be wrong. And if you use and equal sign in an exam, then you will get 0 marks. The reason I used an equal sign was because I couldn't find an arrow on my keyboard.

Answer:

It helps in the identification of living organisms as well as in understanding the diversity of living organisms. To understand and study the features, similarities and differences between different living organisms and how they are grouped under different categories.

Answer:

Answer:

Virus.

Explanation:

Living things are organisms

Fungi is a plant which is a living thing

bacteria is an organism

and a German Shepherd is a animal which is a living thing

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Answer:

oil

coal

natural gas are the fossil fuels

Answer:

Explanation:

The big blue butterfly was an extinct species in the UK. Scientists wanted to find the missing pieces to be able to bring it back. They found out that they were thymus and myrmica that could help the big blue butterfly come back from extinction.  

Red ants eat all kinds of butterflies but doesn’t eat the caterpillar (butterfly’s babies). The big blue butterfly used a smart and sneaky idea by keeping their babies with the red ants. The caterpillar tries to mimic the sound and smell of the red ants’ child when they get adopted by them. The red ant then takes the caterpillar inside the nest to feed and live there. The caterpillar leads a predatory life eating the ants’ own larvae until it transforms to a pupa. Ants are important to butterflies, if the grass is too long, they move out. So, without sheep to keep the grass short, there won’t be any ants.

Answer:  Soil tilth.

Explanation:

Good soil tilth is also associated with good soil structure. This is important because a vast majority of the world's agriculture depends upon rainfall to produce a reliable supply of food, feed, or fiber and when the soil has an unstable structure, infiltration of rainwater into the soil is often very limited.

Most common types of secondary structures of proteins are (B) a-helix and áº-pleated structures.

The alpha helix and the beta pleated sheet are the two forms of secondary structures that are encountered most frequently. Both of these structures rely on hydrogen bonds to maintain their shape. Hydrogen bonds are formed when the carbonyl oxygen of one amino acid interacts with the amino hydrogen of another amino acid.

The alpha-helix is the most typical example of the secondary structure that can be found in proteins. The N-H group of the amino acid forms a hydrogen bond with the C=O group of the protein, resulting in the formation of the alpha-helix structure.

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Structures and sealed surfaces have an influence on the natural water cycle. As a result, stormwater is produced and natural water flows are changed.

Stormwater is rain that has accumulated on sealed surfaces like roadways, walkways, and rooftops. It enters our rivers immediately through the stormwater drainage system.

Urban regions see an upsurge in rainwater entering their rivers when it rains. Flooding into the stormwater drainage system causes water that would typically seep into the ground to be delivered directly to our rivers. Our rivers are impacted by large amounts of stormwater by:

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Answer:

Explanation:

they are the densest things to break down, and store in the body since they are very much carbon based.

Answer:

When animals like cows or sheep chew the cud, they repeat the process of chewing their partially digested meal over and again in their mouth before swallowing it.

OAmalOHope:

Based on the given information, my hypothesis would be Hypothesis A - Mammalian expression systems can produce biologically active and stable erythropoietin.

Based on the given information, my hypothesis would be Hypothesis A - Mammalian expression systems can produce biologically active and stable erythropoietin. This is because erythropoietin is a glycoprotein hormone that is naturally produced by the kidneys in mammals and has a complex structure that includes multiple disulfide bonds and glycosylation sites. Therefore, it is likely that mammalian cells would be better equipped to properly fold and modify recombinant erythropoietin to maintain its biological activity and stability.
Bacterial expression systems, on the other hand, are typically used for the production of simpler proteins that do not require extensive post-translational modifications. While it is possible to express recombinant erythropoietin in bacterial cells, it may not be able to properly fold or undergo glycosylation, leading to decreased biological activity and stability.
Overall, I believe that mammalian expression systems would be a better choice for synthesizing recombinant erythropoietin due to the complex nature of the protein and its natural production in mammals.

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Answer: A) allele and genotype frequencies are stable

Explanation: The Hardy-Weinberg Equilibrium model states that the genetic variation within a population will remain at about the same levels across generations. Therefore, you could assume that the allele and genotype frequencies (genetic variation) are stable in a population that is in Hardy-Weinberg equilibrium.

Scientists have accumulated considerable evidence to show that organisms alive today have been produced by evolution.

The concept of evolution, supported by extensive evidence from various scientific disciplines such as genetics, paleontology, comparative anatomy, and molecular biology, explains how organisms have changed and diversified over time. It proposes that all living organisms share a common ancestry and have descended from a common ancestor through a process of gradual changes and adaptations over millions of years. The evidence for evolution includes fossil records showing the existence of extinct species that share common characteristics with present-day species, the presence of vestigial structures in organisms that serve no functional purpose but are remnants of ancestral traits, the similarities in DNA and genetic sequences among different species, and observations of natural selection and adaptation in action. Through these accumulated lines of evidence, scientists have established the understanding that organisms alive today are the result of the processes of evolution.

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Answer:

animalcules

Explanation:

that is it i think

False. The highest concentration of THC is typically found in the flowers or buds of the cannabis plant, not in the stems or seeds.

False. The highest concentration of THC is typically found in the flowers or buds of the cannabis plant, not in the stems or seeds. While some THC can be present in the stems and seeds, it is usually in much lower concentrations. It is important to note that consuming the stems and seeds of cannabis can still have psychoactive effects, but they are generally not as potent as consuming the flowers or buds. Additionally, stems and seeds may contain more of other compounds such as fiber and protein, which can have different health benefits. In conclusion, it is best to focus on consuming the flowers or buds if you are seeking the highest concentration of THC.

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