what precaution must be observed when working with alcohol​

Answer:

In turn, each nucleotide is itself made up of three primary components: a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a phosphorus-containing region known as a phosphate group attached to the sugar molecule

Explanation:

pls mark me brainless.pls

Answer:

F - is variation

C is Charles Darwin

B is natural selection

A is Alfred

E is evolution

D is adaptation

Answer:

Earth revolves in orbit around the sun in 365 days, 6 hours, 9 minutes with reference to the stars, at a speed ranging from 29.29 to 30.29 km/s.

Explanation:

A species of strepsirrhine that possesses the prosimian monkeys' unique rhinarium, hence option C is correct

There are several species in the wild. A species found in the forest is called Strepsirhini.

The term "rhinarium" refers to nose shape. In this region, animals including numerous mammals with external nose openings may be found and hair is not present. In many animals, this is where moisture is produced.

The study of these mammals can occasionally reveal information about their evolution and classification.

Therefore,  the purpose of the grooming claw and tooth comb Strepsirrhini primates use these two features to groom themselves.

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Answer:

I do believeCarbon Dioxside

Explanation:

I remember this question from one of my biology classes

Answer:

it's either a or d I know this I'm in child development but I'm pretty sure it's a d but it might help protect the fetus because it's trying to keep it attached and keep it from floating around but it could be d because to provide developing food water and oxygen that would be the only way it could breathe and that's how it gets his nutrients because when the mother is breathing in oxygen and eating that's how the baby gets to take in all that stuff with the mother

To provide the developing fetus with food, water, and oxygen is the function of placenta. Therefore, option (D) is correct.

An organ that grows inside the uterus during pregnancy is the placenta. A developing infant receives oxygen and nutrients from this structure.

As your womb gets smaller, your placenta will fall out and the blood vessels that were holding onto it will close. This assists with forestalling a lot dying - despite the fact that draining a little is ordinary.

The placenta is the membrane that the mother and fetus use to exchange gases, nutrients, and other things. Syncytiotrophoblast, cytotrophoblast, embryonic connective tissue, and the endothelium of fetal blood vessels all contribute to the formation of the membrane.

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Answer:

The probability that they will have an affected child is 25%

Explanation:

Hofner Bassis (BB) is recessive gene and is expressed in an individual who have bb genotype.

Two carrier parents will have genotype = Bb

Bb * Bb

BB, Bb, Bb, bb

The probability that they will have an affected child is 1/4 = 25%

Answer:

Thymine in DNA occurs as the result of thymidylate synthase creating deoxythymidine monophosphate (dTMP), which then undergoes phosphorylation to deoxythymidine diphosphate (dTDP), then to Deoxythymidine triphosphate (dTTP), and incorporated into DNA by the DNA polymerase (DNA pol). Thymine in tRNA arises post-transcriptionally, by S-adenosylmethionine-dependent methylation of a uridine 5'-monophosphate (UMP) residue in RNA.

Explanation:

Thymidylate synthase is an enzyme involved in de novo DNA synthesis. This enzyme (thymidylate synthase) catalyzes the transfer of the one-carbon group from 5,10-methylene-tetrahydrofolate (5,10-CH2-THF) to deoxyuridine monophosphate (dUMP) and subsequent methylation to produce deoxythymidine monophosphate (dTMP), which is then phosphorylated to deoxythymidine triphosphate (dTTP) by kinases and incorporated into DNA. On the other hand, specific tRNA methylases catalyze the methylation of transference RNA (tRNA) by using S-adenosylmethionine as a methyl donor. Since tRNA methylation is a post-transcriptional modification, this chemical reaction is considered an epitranscriptomic modification on the RNA molecule.

Answer:

Sun.

Explanation:

It's the one giving the energy, not receiving it.

Answer:

It is possible for material from a sedimentary rock to become an igneous rock through a process called metamorphism.

Explanation:

It is possible for material from a sedimentary rock to become an igneous rock through a process called metamorphism. Metamorphism is the process of change in the structure, texture, or composition of a rock as a result of being subjected to high pressure, temperature, or both. During metamorphism, the original sedimentary rock is subjected to heat and pressure that is sufficient to cause the minerals in the rock to recrystallize into a new rock with a different composition and structure. If the conditions of metamorphism are high enough, the metamorphosed rock may become an igneous rock. This process can take place deep underground, where the rock is subjected to high temperatures and pressures due to the weight of the overlying rock and the heat of the Earth's interior.

Answer:

Alleles at the two genes/loci:  

- Locus 01: A (dominant), a (recessive)

- Locus 02: B (dominant), b (recessive)

A_B_ (Licorice)

aaB_ (Chocolate)

__bb (Vanilla)

Explanation:

Recessive epistasis is the genetic interaction phenomenon where recessive alleles at one locus mask the phenotypic expression of another gene locus. In a recessive epistatic interaction between two genes, the phenotypic ratio of the three resulting phenotypes is 9: 3: 4. In this case, there are two genes responsible for the three phenotypes Licorice, Chocolate, and Vanilla. One locus is responsible for determining if Fluffernutter labradors will be Licorice or Chocolate. Licorice is dominant and will be expressed if the Fluffernutter labrador has a AA or Aa, while Chocolate is recessive and therefore it is expressed only in aa Fluffernutter labradors. However, the expression of the phenotype is determined by another gene pairing. The epistatic allele b in homo-zygous condition will produce Fluffernutter labradors with Vanilla phenotype.

Answer:

Two adaptations in plant cells that do similar things for plants as bones do for animals are cell walls and vacuoles. Cell walls provide structure and support to the plant, similar to how bones provide structure and support to animals. Vacuoles store essential nutrients and minerals, just as bones store important minerals and nutrients.

Explanation:

Answer:

yes it can

Explanation:

If a checkpoint fails or if a cell suffers physical damage to chromosomes during cell division, or if it suffers a debilitating somatic mutation in a prior S phase, it may selfdestruct in response to a consequent biochemical anomaly.

Tumor suppressors. Negative regulators of the cell cycle may be less active (or even nonfunctional) in cancer cells. For instance, a protein that halts cell cycle progression in response to DNA damage may no longer sense damage or trigger a response.

Answer:

C. This ensures that the member's best interest is protected.

Explanation:

EDG2021

Answer:

C) This ensures that the member's best interest is protected.

Explanation:

Answer:

2.87 g

Explanation:

Step 1: Given data

Step 2: Calculate the partial pressure of CO₂

The total pressure is the sum of the partial pressures of CO₂and water.

P = pCO₂ + pW

pCO₂ = P - pW = 754.0 mmHg - 17.55 mmHg = 736.5 mmHg

We will convert this pressure to atm using the conversion factor 1 atm = 760 mmHg.

736.5 mmHg × 1 atm/760 mmHg = 0.9691 atm

Step 3: Calculate the moles (n) of CO₂

We will use the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 0.9691 atm × 1.62 L/(0.0821 atm.L/mol.K) × 293 K = 0.0653 mol

Step 4: Calculate the mass corresponding to 0.0653 moles of CO₂

The molar mass of CO₂ is 44.01 g/mol.

0.0653 mol × 44.01 g/mol = 2.87 g

The pressure exert on the one gas in the mixture by the other gases is called partial pressure.

The answer to the question is 2.87g.

The data is given in the question and the data is as follows:-

In the question we have to find the total pressure is the sum of the partial pressures of CO₂ and water. The equation we gonna use is:-

[tex]P = pCO_2 + pW[/tex]

To find the pCO2,

[tex]pCO_2= P - pW \\= 754.0 mmHg - 17.55 mmHg \\= 736.5 mmHg[/tex]

Pressure must be in ATM therefore, 1 atm = 760 mmHg.

=[tex]\frac{736.5 mmHg * 1 atm}{760 mmHg} = 0.9691 atm[/tex]

The ideal gas equation is as follows:-

[tex]PV = nRT\\n =\frac{PV}{RT}\\n = \frac{ 0.9691 atm * 1.62 L}{(0.0821 atm.L/mol.K) × 293 K}\\ = 0.0653 mol[/tex]

The mass of the following is:-

The molar mass of CO₂ is 44.01 g/mol.

Therefore,

[tex]0.0653 mol * 44.01 g/mol \\= 2.87 g[/tex]

Hence, the correct answer is 2.87g.

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Answer:

B. The Earth would only have two large convection currents. The power of Earth's spin to turn flowing air is known as the Coriolis Effect. If the Earth didn't spin, there would be just one large convection cell between the equator and the North Pole and one large convection cell between the equator and the South Pole.

Explanation:

At the Equator, the earth's rotational motion is at its fastest, about a thousand miles an hour. If that motion suddenly stopped, the momentum would send things flying eastward. Moving rocks and oceans would trigger earthquakes and tsunamis. The still-moving atmosphere would scour landscapes.

If the planet stopped suddenly, everything on the surface would be destroyed, as the atmosphere, oceans and anything not nailed down kept spinning. Even braking to a halt over a minute would mean everything experienced a sideways deceleration of three-quarters of Earth’s gravity, so ‘down’ would feel like it was at an angle of 38° from the vertical. That’s enough to knock over most buildings.

If it slowed down over several years, it would still be a disaster. Without centrifugal force, the oceans would move towards the poles, dropping ocean depth by 8 km around the equator. Since this is less than the depth of the ocean there, Earth’s water would be divided into two huge polar oceans separated by a belt of land in the middle. Everything north of Spain would be underwater, as well as all of Antarctica.

Once Earth doesn’t spin on its own axis, a day lasts as long as a year. Everywhere receives six months of daylight, gradually heating up the planet to well over 100 °C. The huge central continent would get the hottest, and any remaining lakes and rivers would boil away and be blown to the poles by fierce winds. Even primitive life would only be possible along a narrow strip at the coast.

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Answer:

C; thats good

Explanation:

Hope this helps!

The image shown is of a cell cycle. Cycle phases are prophase, metaphase, anaphase, and telophase.

What is a cell cycle?

A cell cycle is the sequence of events that take place in a cell leading to its division and duplication (replication). It consists of two main parts: interphase and the mitotic phase. During interphase, the cell grows and DNA is replicated in preparation for cell division. During the mitotic phase, the cell divides into two daughter cells.

A cell spends the majority of its time in interphase, which is when it develops, duplicates its chromosomes, and prepares to divide.

The cell then exits interphase, enters mitosis, and divides to completion. Each of the resulting cells, known as daughter cells, enters its own interphase to begin a new cell cycle.

The cell cycle is the process by which cells multiply and divide into two new cells. The cell cycle phases are G1, S, G2, and M. At the G1 stage, cells are getting ready to divide.

Therefore, The given image is of cell cycle. The phases of cycle are prophase, metaphase, anaphase and telophase.

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The cell cycle can be explained as a sequence of events by which a cell duplicates its genome, synthesizes other cell constituents, and eventually divides into two daughter cells.

The two primary phases of the cell cycle are

The M phase has four stages

Cytokinesis follows the M phase.

So, the final answers are,

Answer: 1. Plastics are polymers. A polymer is a substance made of many repeating units. The word polymer comes from two Greek words: poly, meaning many, and meros, meaning parts or units. A polymer can be thought of as a chain in which each link is the “mer,” or monomer (single unit).  2. Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules. ... They can even join "head-to-tail" to make rings of carbon atoms. An example of two molecules that contain carbon is compound methane ( 1 carbon bounded to four hydrogen. ) ... Carbon is able to form so many molecules/compounds because each carbon atom can form four chemical bonds to other atoms and, because of its size, it fits in nicely as part of large molecules. 3. Carbohydrates- Monosaccharides (simple sugars), Lipids- Fatty acids and glycerol, Proteins- Amino acids, Nucleic acids- Nucleotides. brainliest??

Explanation:

Ecological Succession....

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In the sequence of amino acids, a ribosome will read the mRNA about three or more letters at a time, each set is called a codon.

The sequence of a protein is normally notated as a string of letters, according to the sequence of the amino acids from the amino-terminal to the carboxyl-terminal so to a ribosome, it will gaze like this: AAA-CGA-GGC-UAA. That first codon, AAA, tells the ribosome to start structuring the protein with the amino acid lysine.

Amino acid sequences can be written using either the three-letter code or a one-letter code is the order in which amino acid rest, attached by peptide bonds, lies in the chain of peptides and proteins

So we can conclude that  The amino acid sequence is encoded in DNA. During protein synthesis.

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Answer:

Your weight on the Moon is 16.5% what you would experience on Earth

Explanation:

Answer:

To find the weight on the moon, we divide the weight on earth by the earth's force of gravity, which is 9.81m/s2. ... So an object or person on the moon would weigh 16.5% its weight on earth. Therefore, a person would be much lighter on the moon. Conversely, a person is 83.5% heavier on earth than on the moon.

Explanation:

Also:The mass of an object will not change if the gravitational pull on the object changes, but the weight of the object will. ... But if you measure your weight on the Earth and on the moon, your weight will be far less on the moon because of a weaker gravitational force,

~Hope this helps~

Answer:

Cellular respiration releases stored energy in glucose molecules and converts it into a form of energy that can be used by cells.

Explanation:

Answer:

If this is a true or false question or you just want to check if you right. I believe these are all true and correct facts. :)

A plant's roots absorb water from the nearby soil. This is the best example of how living things play a role in the water cycle. Thus, the correct option is A.

The water cycle is the biogeochemical cycle which shows the continuous movement of water within the Earth and its surrounding atmosphere. Water cycle is a complex system that includes many different processes such as evaporation, precipitation. Liquid water evaporates into the form of water vapor, condenses back to form clouds, and precipitates back to the earth in the form of rain and snow particles.

Plants absorb water from the soil. The water then moves from the roots through the stems to the leaves of the plant. Once, this water reaches the leaves, some of it evaporates from the leaves, adding to the amount of water vapor in the atmosphere. This process of evaporation through the plant leaves surface is called transpiration.

Therefore, the correct option is A.

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Plants Produce Immunogenic Peptidoglycans, almost all bacterial cell walls, with the exception of those of Archaea, include it as a hard component and it helps give bacteria their characteristic form.

In most bacterial species, the cytoplasmic membrane is encased in a hard material called peptididoglycan. It helps maintain cell shape throughout the life cycle and shields bacterial cells from environmental stress. The production of peptididoglycans has a significant role in controlling bacterial cell division. A polymeric macromolecule known as peptididoglycan is composed of linear glycan strands joined together by peptide bridges. The sacculus, which surrounds the cell and is made of covalently closed peptididoglycan, is formed when peptididoglycan is polymerized at the exterior of the cytoplasmic membrane.

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Answer:

Chargaff's data was an important clue for putting together the structure of DNA because it provided the basis for determining the ratios of the four nitrogenous bases in DNA. Specifically, Chargaff's data showed that the amount of adenine (A) was equal to the amount of thymine (T), and the amount of guanine (G) was equal to the amount of cytosine (C). This helped scientists to understand that the two strands of a DNA molecule pair together in a specific way, with A always pairing with T and G always pairing with C. This information was essential in determining the double-helix structure of DNA.

Explanation:

Answer:

The US elections of 1860, one year before the civil war.

Explanation:

Letter to the editor,

Dear sir,

Never before in the history of this once proud and united country have elections divided this country in two. As the Democratic Party´s disagreement over the oficial party policy on slavery very clearly shows (with a Southern Democratic candidate and a 'normal' Democratic one), the deeply felt ideological split between the Northern and the Southern States has now, although Abraham Lincoln is chosen as the President, become a fact. This means that we, the United States of America, are no longer United.

I had to put the answer in the image sorry