Living things are based on a universal genetic____

Answer: It’s C

Explanation:

Answer:

it is option c

Explanation:

In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection.

The vagus nerve's parasympathetic action on the sinu-atrial node pacemaker tissue slows the heart, whereas sympathetic tone only reduces ventricular contractility when it is elevated.

Thus, The activation of M2 receptors is what causes these effects. Direct coupling to K+ channels, which are opened to permit K+ efflux, hyperpolarization, and a shortening of the action potential duration, is the primary cause of the direct effect on nodal tissue.

This causes a slowing of the heartbeat (bradycardia). The cAMP synthesis is inhibited by the M2 receptor, which results in the antiadrenergic activity.

Although blood arteries do not typically get parasympathetic innervation, muscarinic agonists cause them to vasodilate broadly and lower blood pressure. The presence is what causes the vasodilator action.

Thus, The vagus nerve's parasympathetic action on the sinu-atrial node pacemaker tissue slows the heart, whereas sympathetic tone only reduces ventricular contractility when it is elevated.

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Answer:

Hydrogen bonds

Explanation:

It is important to know that the bases

AT

CG

Are bonded by hydrogen.

The human DNA analyze is usually conclusive evidence about a crime, since each individual has their unique genetic code. Fritz results were inconclusive, therefore the sample did not showed a result corresponding to the one on the crime scene. In this case Fritz is not guilty of shoplifting.

Gene regulation typically occurs at the transcription stage, when the genetic information encoded in the DNA is copied into a messenger RNA (mRNA) molecule.

During transcription, a complex set of regulatory proteins and RNA molecules work together to control whether a particular gene is turned on or off, and to what extent. This regulatory system allows cells to respond to changing environmental conditions or developmental cues, by selectively expressing or repressing specific genes.

Once the mRNA is produced, it can be further modified or degraded to control its stability and translation into a protein, but most of the critical gene regulation occurs during transcription.

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Answer:

Gene flow at work

Explanation:

Answer:

gene flow at work

Answer: list two examples of secondary compounds.

Secondary Metabolites in Plants

Class Example Compounds Some Effects and Uses

Flavonoids anthocyanin, catechin flower, leaf color; inhibit enzymes, anti- and pro-oxidants, estrogenic

Tannins gallotannin, condensed tannin bind to proteins, enzymes, block digestion, antioxidants

Lignin lignin structure, toughness, fiber

Explanation:

Hope it helps you if not sorry

Solution:

According to the statement, we have that the older the woman is, the more mitochondria there will be in the muscle cells, that is, the number of mitochondria in the muscle cells depends on the woman's age. This means that the dependent variable is the number of mitochondria in the muscle cells. Thus, the independent variable is

age of the girls

Answer:

simple answer, do what ever makes you happy! if you want to try shorter hair, go for it! it will grow back so might as well try it out!

personally I think shorter hair is really pretty and eaiser to take care of

try holding your hair up it in the mirror and see if you like how it looks short

Substances that dissociate into ions and conduct electricity when dissolved in water are known as electrolytes.

salt, baking soda, and hydrochloric acid are all examples of electrolytes. In the body, electrolytes play a critical role in various processes, including muscle and nerve function.

Electrolyte balance is critical for the body to function properly, and imbalances can cause problems such as muscle cramps, weakness, and irregular heartbeats. So, the substances that act as electrolytes are those that dissociate into ions and conduct electricity when dissolved in water.

Examples of such substances include table salt, baking soda, and hydrochloric acid. In addition to playing a vital role in the body, electrolytes also have various industrial applications, such as in the production of aluminum and other metals, as well as in the manufacture of batteries and electronic devices.

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Thyroid hormone acts in a permissive manner with growth hormone. Growth hormone is a peptide hormone secreted by the anterior pituitary gland and is responsible for promoting cell growth and development.

Thyroid hormone is essential for the synthesis and release of growth hormone. Without thyroid hormone, growth hormone cannot be released in sufficient amounts to promote normal growth and development. Furthermore, growth hormone is essential for the normal metabolism of carbohydrates, lipids, and proteins, and thyroid hormone is necessary for the normal metabolism of these nutrients.

Therefore, thyroid hormone acts as a permissive hormone for growth hormone, allowing it to do its job. Without thyroid hormone, growth hormone cannot be released in sufficient amounts to promote normal growth and development. Therefore, thyroid hormone is essential for the normal development and growth of an individual.

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correct question is :

thyroid hormone acts in a permissive manner with what hormone?

Answer:

B. The prairie dog population will decrease, the red-tailed hawk population will decrease, and the bison population will increase.

Explanation:

I'm not given context; however, I am assuming that the prairie dog preys on the bison because the bison is commonly known as a herbivore.

If another predator who preys on the prairie dog is introduced, there is increased competition with the red-tailed hawks. Although this doesn't directly impact the population of red-tailed hawks, it reduces its food supply (of the prairie dog) because it is being shared, so it will have less food to grow at the optimal level.

With the increased consumption of the prairie dog, naturally, that would leave its prey; the bison, to have a lower level of predation, thereby the population increasing.

Answer:

A formed after the horizontal layer above was deposited.

Explanation:

In the given diagram following are the labeling for several ecologic features:

A - Folded rock strata

B - Large intrusion

C -  Erosion angular unconformity

D - Volcanic di.ke

E - even younger rock strata

F - normal fault

As, A represent folded rock strata and layered rocks or folded rocks are formed when particles settle from water and air horizontally over the rocks.

Hence, the correct statement is "A formed after the horizontal layer above was deposited".

Answer:

A formed after the horizontal layer above was deposited.

Explanation:

Got 100% on culmative exam.

The abundance of sodium channels in muscles is as important as the abundance of sodium leak channels in a typical neuron.

Sodium plays an essential role in the body, this includes important functions such as:

This is possible through sodium channels in cells that allow sodium to enter or leave the cell at very specific times and this causes specific reactions in cells.

Based on this, the presence of these channels in both neurons and skeletal muscles is equally important.

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Ground-penetrating radar is used by paleoanthropologists to discover new fossil sites or localities.

Paleoanthropologists rely on ground-penetrating radar to uncover and identify potential fossil sites or localities. Ground-penetrating radar (GPR) is a geophysical technique that uses radar pulses to create images of the subsurface.

It allows scientists to "see" beneath the ground without the need for excavation.

By sending into the ground and measuring the reflections that bounce back, GPR can detect variations in the subsurface composition. This includes identifying changes in soil density, the presence of sediment layers, and the possible presence of fossils or other artifacts.

By analyzing the data collected through GPR, paleoanthropologists can pinpoint potential locations where fossils may be buried.

GPR is a non-destructive and non-invasive method, making it particularly valuable in paleoanthropology, where the preservation of delicate fossil remains is crucial. It allows researchers to survey large areas quickly and efficiently, reducing the need for extensive excavations.

By using GPR, paleoanthropologists can prioritize excavation efforts and focus on areas with the highest potential for fossil discoveries.

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Answer:

below.

Explanation:

1. Heterozygous for both traits: QqTt

2. Homozygous for both traits: QQTT or qqtt

3. Homozygous dominant for Q and heterozygous for T: QQTt

4. Heterozygous for Q and homozygous recessive for T: Qqtt

Hope this helps! :)

Answer: Viroid.

Explanation:

Microorganisms are those organisms that are very tiny in size and imperceptible to the naked eye. Thus, they are only visible under the microscope. They have a very basic biological organization, a significant proportion of them have only a single cell. Examples are bacteria, archaea (both prokaryotes), protozoa, microscopic fungi and microscopic algae (eukaryotes).

i. RNAases are enzymes of the endonuclease family that catalyze the breaking of ribonucleic acid (RNA) strands by a hydrolytic mechanism. It is present in almost all organisms, from bacteria and archaea to eukaryotes.

ii. DNAases are enzymes that catalyze the cleavage of phosphodiester bonds in deoxyribonucleic acid (DNA). If the enzyme catalyzes the cleavage of the terminal phosphodiester bond it is called exodeoxyribonuclease, whereas if it is an internal bond it is called endodeoxyribonuclease. As the RNAses, they are present in many microorganisms.

iii. Proteases are enzymes that break the peptide bonds found between amino acids of proteins. Proteins are polymers that are found also in almost all microorganisms and perform vital functions such as structural, DNA replication, reproduction, etc.

iv. All microorganisms are affected by heat at a certain degree. The heat causes denaturation of proteins and breaks the cellular membrane.

v. Acids are chemical compounds that release hydrogen ions (H+) in large quantities. They are characterized by being corrosive and they dissociate completely in an aqueous solution. Microorganisms are also susceptible to acids because they denature proteins and affect cell membranes.

If the agent is destroyed by RNAse, heat and acids, it is a viroid.

Viroids are infectious agents that have an extracellular cycle in which they are metabolic inactive, and an intracellular cycle in which they cause infections, like viruses do. However, unlike viruses, viroids have no proteins or lipids and consist of a short, circular RNA strand which does not encode proteins. So they are affected by RNAses but not DNAases. In addition, they have no proteins because they lack a capside and they are not translated into proteins. But like all microorganisms, they are affected by heat and acids (except for some cases of extremophilic bacteria that can withstand high temperatures and/or high levels of acidity).

Answer:

The light reaction takes place in the thylakoid discs

Explanation:

The light reaction takes place in the thylakoid discs. There, water (H20) is oxidized, and oxygen (O2) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids.

Lab 10 work involves determining protein content in milk using Biuret, Kjeldahl, and Spectrophotometric methods.

Lab 10 work is a lab experiment that focuses on determining protein content in milk using Biuret, Kjeldahl, and Spectrophotometric methods. The three methods used are general principles of protein analysis, while the spectrophotometric method is based on specific chemical or biological reactions. The Biuret and Kjeldahl methods involve measuring the amount of nitrogen present in the milk sample, and the results are used to calculate the amount of protein in the sample. The spectrophotometric method is used to determine the protein concentration by measuring the absorbance of a colored solution with a spectrophotometer. The difference in the absorbance readings between the test sample and the blank is then used to determine the amount of protein in the milk.

In conclusion, lab 10 work is a comprehensive experiment that involves the use of three different methods to determine the protein content in milk. The results obtained from each method are used to calculate the amount of protein in the sample. The experiment helps students to understand the principles of protein analysis and the importance of protein in the food industry.

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Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.

From the following expression

Speed = Distance/Time

Distance = Speed*Time

More on the kinetic Energy

Formula

KE= 1/2mv^2

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one of the correct answer is deforestation and burning of fossil fuels for sure and am not sure about the second one but I found this on the web and hope it helps

Answer:

It’s B

Explanation:

I did the test

Answer:50 or 100

Explanation: i think lol

Option (C) before an appropriate us is the correct answer.

Operant conditioning, sometimes referred to as instrumental conditioning, is a method of learning that employs rewards and punishments for behavior. Through operant conditioning, an association is made between a behavior and a consequence (whether negative or positive) for that behavior.

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Answer:

An over hunting of animals results in either a severe decrease in that species population, or extinction of that species from that area. It can also result in a decrease is surrounding species' population as an over hunting of another food source can cause a widespread affect on the food chain.

Explanation:

Hope that helps! Let me know if it does or not!

Extrinsic homeostatic regulatory mechanisms typically control cell activities via the nervous and endocrine systems.

Extrinsic homeostatic regulatory mechanisms refer to the processes by which the body maintains a stable internal environment by adjusting cell activities. These mechanisms involve external factors and systems that coordinate and regulate cellular functions. Two primary systems involved in extrinsic regulation are the nervous system and the endocrine system.

The nervous system plays a crucial role in controlling cell activities through the transmission of electrical signals. It consists of the brain, spinal cord, and peripheral nerves. The nervous system regulates cell activities by sending signals to cells through specialized cells called neurons. These signals, known as nerve impulses, travel along the neurons and can stimulate or inhibit various cellular processes. For example, the nervous system can regulate heart rate, muscle contraction, and secretion of hormones by signaling the appropriate cells.

The endocrine system, on the other hand, controls cell activities through the release of hormones. The endocrine system consists of various glands, such as the pituitary gland, thyroid gland, and adrenal glands, which secrete hormones directly into the bloodstream. These hormones travel throughout the body and bind to specific target cells, initiating a response and regulating cellular activities. The endocrine system helps maintain homeostasis by controlling processes such as metabolism, growth and development, reproduction, and stress responses.

Together, the nervous and endocrine systems work in coordination to regulate cell activities and maintain homeostasis in the body. The nervous system primarily utilizes electrical signals to communicate with cells, while the endocrine system relies on the release of hormones into the bloodstream to affect target cells.

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Replication is semi-conservative as concluded by Meselson and Stahl's experiment.

Meselson and Stahl's experiment provided evidence supporting the conclusion that DNA replication is semi-conservative. In the first step of their experiment, they labeled the DNA of the bacteria with a heavy isotope of nitrogen (15N). After allowing the bacteria to divide and replicate their DNA once, they extracted the DNA and observed its distribution in a centrifuge.

In the second step, they transferred the replicated DNA into a medium containing a lighter isotope of nitrogen (14N) and allowed the bacteria to continue dividing. They then extracted the DNA and observed its distribution in a centrifuge again.

The results of the experiment showed that after one round of replication, the DNA molecules formed a band intermediate in density between the heavy DNA and the light DNA. This result supports the semi-conservative model of DNA replication.

In the semi-conservative model, each newly synthesized DNA molecule consists of one original (parental) strand and one newly synthesized (daughter) strand. The observed band in the experiment corresponds to this mixed composition of DNA molecules.

Therefore, based on the experimental findings, Meselson and Stahl concluded that DNA replication is semi-conservative, meaning that each new DNA molecule formed during replication contains one strand from the original DNA molecule and one newly synthesized strand.

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