Please select all of the characteristics of DNA to test your understanding of its chemical structure.
- Deoxyribose sugar
- Phosphate group
- Nitrogenous bases

Answer:

Breathing rate increases to provide the body (exercising muscles) with oxygen at a higher rate. Heart rate increases to deliver the oxygen (and glucose) to the respiring muscles more efficiently

Cells can be divided into prokarytic and eukaryotic

\(\quad \huge \quad \quad \boxed{ \tt \:Answer }\)

\(\qquad \tt \rightarrow \: b. Eukaryotic \:\: cells\)

____________________________________

\( \large \tt Solution \: : \)

Nucleus is only found in developed cells (eukaryotic cells), because they have well differentiated cell organelles and are mich developed.

where as, prokaryotic cells are primitive cells that have no distinguished organelles and many organelles aren't even present. they have genetic materials spread over in cytoplasm.

Hence, we can conclude that Nucleus can only be found in eukaryotic cells.

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Answer:

b. eukaryotic cells

The correct option is A; The solution that most closely approximates the solute concentration of a red blood cell is solution 1 because the condition of the cell is normal which also makes it isotonic .

The pH range of 4.5 to 7 was found to have the highest activity of -amylase. Lowering the pH of the enzyme solution below this range reduces enzyme activity. RNA is more reactive than DNA and is not stable in alkaline conditions because it contains a ribose sugar. Because of its larger helical grooves, RNA is more vulnerable to enzyme attack. UV light has the potential to damage DNA. RNA is more resistant to UV light damage than DNA.

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Invasive species is not a significant cause of the current mass extinction event.

Extinction is the final phase of a sort of creature or a taxon—typically a species. Although the ability to reproduce and bounce back may have been lost earlier, the death of the last member of the species is typically considered to be the moment of extinction. Determining this point is challenging because a species' potential range may be quite wide, and is typically done after the fact. Due to this problem, there are phenomena like Lazarus taxa, in which a species that was thought to be extinct suddenly "reappears" after a period of apparent absence (usually in the fossil record).

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To transfer the gene for Insulin production into the bacteria that will be making it, the scientist should use a Micropipette. The correct option is B.

A micropipette is an electronic lightweight pipette. The topmost part is called the plunger, the bottom is the pipette from where the liquid is transferred. It has a measurement scale to measure.

The transfer of genes for insulin production. The gene transfer can be done accurately with measurement, so a micropipette will be used here.

Thus, option B. Micropipette is correct for the transfer of genes.

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From a cross between dihybrid individuals, whose diallelic genes code for one trait each, expressing complete dominance, the phenotypic ratio is B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated :1 yellow-constricted.

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Since I do not have the cross, I will assume the cross involves two dihybrid individuals by looking at the options.

So, let us picture the situation,

1st Cross)   Two h0m0zyg0us individuals

Parental)  GGII     x     ggii

F1) 100% GgIi

2nd Cross) Selfcross between F1 individuals

Parentals)   GgIi    x    GgIi

Gametes) GI, Gi, gI, gi

                GI, Gi, gI, gi

Punnett square)     GI        Gi        gI       gi

                     GI      GGII     GGIi   GgII   GgIi

                     Gi      GGIi      GGii   GgIi   Ggii

                      gI      GgII     GgIi    ggII    ggIi

                      gi      GgIi     Ggii    ggIi     ggii

F2)    Genotype

       Phenotype

Phenotypic ratio 9:3:3:1

Options

A) 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted ⇒ NOT CORRECT

B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted ⇒ CORRECT

C) 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated ⇒ NOT CORRECT

D) 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated ⇒ NOT CORRECT            

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The molecules that can be digested by enzymes secreted by the pancreas are primarily macronutrients such as carbohydrates, proteins, and fats. Carbohydrates are broken down by enzymes such as amylase and maltase, while proteins are broken down by enzymes such as trypsin and chymotrypsin.

The pancreas secretes enzymes that help digest specific types of molecules obtained from ingested food. These molecules include:
1. Carbohydrates: The enzyme amylase breaks down complex carbohydrates, such as starch, into simpler sugars like maltose and glucose.
2. Proteins: Proteolytic enzymes, like trypsin and chymotrypsin, break down proteins into smaller peptides and amino acids.
3. Fats: Lipase digests fats (triglycerides) into glycerol and fatty acids.
In summary, the pancreas produces enzymes that help digest carbohydrates, proteins, and fats from ingested food into simpler molecules, which can be absorbed and utilized by the body.

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The Cretaceous period is known because the Earth's land was assembled into two continents (Laurasia and Gondwana), when a Archeologist discover a fossil dated back to this period it is most likely that it comes from Big Bend National Park (Texas), since it is where rocks from late Cretaceous are found, as well in the southern Canada, Montana, and nearby areas. The climate in the Cretaceous was hot and dry, wgich most of the land covered by deserts and forests.

Answer:

Explanation:uno rubio y uno castaño

The term you are referring to is "acid rain" which refers to when precipitation of low PH of around 4-5 causes damage to vegetation, soil, aquatic life and statues and. Corrodes metals

Acid rain is a term used to describe the deposition of acidic compounds from the atmosphere onto the Earth's surface in the form of rain, snow, fog, or dry particles. It is caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) which react with the atmosphere to form acids such as sulfuric acid (H2SO4) and nitric acid (HNO3). Acid rain can have harmful effects on the environment, including damaging vegetation, soil, aquatic life, and infrastructure.

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The mutation that occurred is a point mutation in which a single nucleotide in the sequence coding for the amino acid was substituted with another amino acid.

A point mutation is a type of genetic alteration in which only one nucleotide base from the DNA or RNA sequence of an organism is altered, added, or removed.

Based on the specifics of the mutation, point mutations have a variety of effects on the downstream protein product, with some of these effects being fairly predictable.

The point mutation shown is a substitution of nucleotides in the codon ATC for the amino acid isoleucine. The mutation to ACT and ACC produces the amino acid threonine.

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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.

The pieces of evidence that would prove this claim false include:

This is defined as the degree of hotness or coldness of a substance and is influenced by thermal energy.

High temperature will reduce the amount of oxygen in water and also decrease the activities of animals which is why it matters to them.

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Answer:

Climax community

Explanation:

Answer:

B is your answer

Explanation:

good day, hope this helps ^^

Answer:

a plant hormone which promotes leaf detachment, induces seed and bud dormancy, and inhibits germination.

Abscisic acid (ABA) is a plant hormone. ABA functions in many plant developmental processes, including seed and bud dormancy, the control of organ size and stomatal closure. It is especially important for plants in the response to environmental stresses, including drought, soil salinity, cold tolerance, freezing tolerance, heat stress and heavy metal ion tolerance

Answer:

1) Every planet's orbit is an ellipse with the sun at a focus.

2) A line joining the sun and a planet sweeps out equal areas in equal time(s)

3) The square of a planet's orbital period is proportional to the cube of semi major axis of it's orbit

Answer:

TO AID DIGESTION

Explanation:

The core function of the human stomach is as an aid to digestion. The four key components of gastric digestive function are its function as a reservoir, acid secretion, enzyme secretion and its

role in gastrointestinal motility.

I HOPE THIS HELPS

Answer:

The main function of stomach are:

1.It store food and release it to the intestines at the ate where by the intestine can process it

2. Digests food

Answer: okay im pretty sure its B) ...hope this helped!

Explanation:

Answer:

D) The population steadily increased to get closer to carrying capacity.

Explanation:

I did the test!

Answer: its D

Explanation: on edge

Answer: Prokaryote

Explanation: "The bacteria are the oldest and simplest living organisms, and all of the bacteria are "prokaryotes ," meaning that they do not have a true membrane-bound nucleus as eukaryotes do."

This is where I got my answer from

https://sphweb.bumc.bu.edu/otlt/mph-modules/ph/ph709_infectiousagents/ph709_infectiousagents2.html#:~:text=The%20bacteria%20are%20the%20oldest,means%20%22true%20nucleus.%22%5D

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The information on the gene for dystrophin is supposed to be accurately read and transcribed by the cell machinery.

This process results in the production of the dystrophin protein, which plays a crucial role in maintaining muscle structure and function. It can be explained as follows:-

1. The information encoded in the dystrophin gene is found within the DNA sequence.
2. During transcription, the DNA sequence is copied into a molecule called messenger RNA (mRNA).
3. The mRNA molecule then moves to the cell's ribosomes, where the process of translation takes place.
4. During translation, the ribosomes read the information on the mRNA and synthesize the dystrophin protein using amino acids.
5. The dystrophin protein is then incorporated into muscle cells, where it helps provide structural support and maintain the integrity of the muscle fibers.

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The type of scientist best qualified to perform genetic engineering to produce more productive seeds in agriculture would be a molecular biologist, the correct option is C.

Molecular biologists specialize in studying the structure, function, and interactions of molecules within biological systems, including DNA and genes. Genetic engineering involves manipulating the genetic material of organisms, which requires a deep understanding of molecular biology principles.

Molecular biologists have the expertise to identify and isolate specific genes responsible for desired traits in crop plants, such as increased productivity or resistance to pests or diseases. They can then modify or introduce these genes into target plants to achieve the desired outcomes, the correct option is C.

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Which of the following procedures would be LEAST likely to prevent bacterial synthesis of the superantigen protein?One of the procedures that would be the LEAST likely to prevent bacterial synthesis of the superantigen protein is adding tRNA nucleotide that can bind to the mRNA and bacterial ribosomes.

Therefore, option A is the correct answer to the question. Adding a specific complementary nucleic acid sequence that can bind to mRNA transcribed from the superantigen gene would prevent bacterial synthesis of the superantigen protein.Answers a and b depend on interfering with protein synthesis to prevent the formation of the superantigen. Bacteria translate proteins from mRNA molecules, which are transcribed from DNA.

The bacterial translation machinery reads the mRNA codons, tRNA molecules provide the corresponding amino acid, and the ribosome binds everything together.Antibiotics, for example, target the bacterial translation machinery. Specific antibiotics, such as tetracycline, inhibit the binding of aminoacyl-tRNA to the ribosome, effectively halting translation. Streptomycin causes the ribosome to make mistakes in reading the mRNA, leading to the creation of nonfunctional or toxic proteins. Chloramphenicol inhibits the peptide bond formation between amino acids on the ribosome.

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trial 3, because this trial has a large mass and a large velocity

Microfilaments can be involved in contractions that change the shape of a cell when they are associated with motor proteins such as myosin.

Microfilaments- As they are made up of two entangled strands of the globular protein know as actin, microfilaments are also known as actin filaments. They are the tiniest filament of the cytoskeleton and polymers of a protein actin. They are essential for muscle contraction, cell division, and cellular mobility.

Myosin- The molecular motor known as myosin transforms the chemical energy supplied by ATP into mechanical energy. The actin filaments are subsequently pulled along by this mechanical energy, contracting the muscle fibers and resulting in movement.

The given question is incomplete, find below the complete question,

Q. Microfilaments can be involved in contractions that change the shape of: -

a cell when they are

a. Working with microtubules to bend cilia and flagella

b. Associated with motor proteins such as myosin

c. Complexed with intermediate filaments to form desmosomes

d. Being assembled from actin monomers

e. Associated with actin-associated proteins that are adding actin monomers to the "plus end" of the filament

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