The correct option is D which is breathing.
Explanation:The exchange of gases between animals and the environment is a mechanical process which contains the exhalation and inhalation of gases from the environment and this process is known as breathing.While cellular respiration is the breakdown of glucose for the energy production at cellular level.Evaporation is the conversion of liquid into vapors and transpiration is the evaporation of liquid fro the surface of leave.The horseshoe crab looks very similar to its fossil ancestor from the Jurassic era.
Why has the horseshoe crab not evolved?
Its original form always remained well adapted to its environment.
The species was affected by natural selection.
The species did not pass on genetic information to its offspring.
The species underwent major mutations in a short period of time.
"in a chemical synapse, neurotransmitters are spilled into the synaptic cleft by what action?"
A region that is experiencing very frequent disturbances of intermediate intensity will most likely exhibit _______. if the intensity of these disturbances increases noticeably, the region will most likely exhibit _______.
When gina was 10, she swam in the ocean for the first time. she remembers the feeling of kicking her feet, slicing her arms through the water, tasting the tangy salt water, floating her on her back, and learning from her father that salt water is more dense than fresh water, which makes floating easier. which element is a semantic memory?
"if, after a stroke, a patient is slurring words and has no balance, what two specialists should treat him?"
Look at this character table. rattlesnakes (like turtles) are reptiles, yet they do not have four limbs. in fact, they have no apparent limbs. character lancelet (outgroup) lamprey bass frog turtle leopard vertebral column (backbone) 0 1 1 1 1 1 hinged jaws 0 0 1 1 1 1 four limbs 0 0 0 1 1 1 amnion 0 0 0 0 1 1 hair 0 0 0 0 0 1 what does this suggest? what does this suggest? rattlesnakes are more closely related to bass than they are to frogs, turtles, and leopards. of the species in the table, rattlesnakes are most closely related to lampreys. the presence or absence of four limbs is not a useful character for studying evolutionary relationships among vertebrates. the presence or absence of four limbs, on its own, could be misleading when considering the evolutionary relationships of rattlesnakes.
The presence or absence of four limbs is not a useful character for studying evolutionary relationships among vertebrates, as it can be misleading. Other characteristics and genetic information should be considered to accurately determine evolutionary relationships.
Explanation:Reptiles are tetrapods that ancestrally had four limbs, but some species, like snakes, have secondarily lost or reduced their limbs over time. The presence or absence of four limbs is not a useful character for studying evolutionary relationships among vertebrates because it can be misleading. In the character table provided, the absence of four limbs in snakes does not necessarily mean they are more closely related to bass than to frogs, turtles, and leopards. It is important to consider other characteristics and genetic information to determine evolutionary relationships accurately.
The leading agricultural activity of the pampa region is the production of _____________.
a. coffee
b. cattle
c. sugarcane
d. tropical fruits and vegetables
e. tobacco
which mode of drinking water has the most negative impact on the environment
how many amino acids are coded for by this sequence ATG GGA ACT CCA
The DNA sequence ATG GGA ACT CCA codes for four amino acids. Each triplet of nucleotides, known as a codon, translates to a single amino acid.
To determine how many amino acids are coded for by the sequence ATG GGA ACT CCA, we need to break it down into codons. Each codon consists of three nucleotides.
ATGGGAACTCCAEach codon codes for one amino acid.
Using the genetic code:
ATG codes for Methionine (Met)GGA codes for Glycine (Gly)ACT codes for Threonine (Thr)CCA codes for Proline (Pro)Thus, the sequence codes for 4 amino acids.
Which of the following statements best describes how science has developed over time? A. Scientists worldwide use only existing knowledge and research. B. Male scientists have made the most important scientific discoveries. C. All useful scientific discoveries have been made within the past 50 years. D. Individuals from all over the world throughout history have worked both independently and together to build scientific knowledge.
Answer: D. Individuals from all over the world throughout history have worked both independently and together to build scientific knowledge.
Explanation:
Human beings have tried to identify the cause of natural phenomena by conducting experiments by using accessible and suitable methods of experimentation.
With the rising demand for innovation individual scientists have contributed their time and knowledge to solve problems related to daily life. This has resulted in gathering of huge scientific information among the scientific communities.
What percentage of the Earth’s rain forests have been lost to deforestation since 1950?
60%
40%
10%
6%
The percentage of the Earth’s rain forests have been lost to deforestation since 1950 is 40%
What is deforestation?Deforestation is the removal or cutting down of forests trees from an area by man either fo timber or other uses exposing the soul to erosion and adding more to green house effect.
Therefore, The percentage of the Earth’s rain forests have been lost to deforestation since 1950 is 40%
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Jimmy held the end of a metal bar over a fire while holding on to the opposite end. After a few minutes, the end he was holding began to get very hot. Which of the following processes correctly describes the heat traveling from one end of the bar to the other? A. induction B. conduction C. radiation D. convection
Answer:
conduction
Explanation:
conduction is the transmission of heat across matter. As the end of the metal bar begins to heat up from the fire, the heat is transferred through the metal, to the other end of the bar. This causes the entire bar to be heated.
The process that correctly describes the heat traveling from one end of the bar to the other is known as conduction. Thus, the correct option for this question is B.
What are the different methods of heat transfer?The different methods of heat transfer are as follows:
Convection: It involves the transmission of heat within a fluid with the help of the actual movement of particles.Conduction: It involves the transmission of heat in solids without the actual movement of the particles. Radiation: It involves the transmission of heat without any need for a medium.According to the context of this question, when Jimmy held the end of a metal bar over a fire while holding on to the opposite end. But after a few times, the end he was holding began to get very hot. It significantly involves the process of conduction of heat from one place to another.
Therefore, conduction is the process through which the heat travels from one end of the bar to the other. Thus, the correct option for this question is B.
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two pieces of silk have an electron charge after being rubbed on a piece of
The answer is they will repel each other.
Activation of the sympathetic division of the autonomic nervous system produces _____ in heart rate, and activation of the parasympathetic division produces _____.
a.increases, additional increases in heart rate
b.increases, decreases in heart rate
c.decreases, increases in blood pressure
d.decreases, additional decreases in heart rate
Final answer:
Activation of the sympathetic division of the autonomic nervous system increases heart rate for a 'fight or flight' response, while activation of the parasympathetic division decreases heart rate, supporting a 'rest and digest' state.
Explanation:
The autonomic nervous system, which includes the sympathetic and parasympathetic divisions, plays a crucial role in regulating the heart rate among other functions. Activation of the sympathetic division of the autonomic nervous system increases heart rate, preparing the body for 'fight or flight'. Conversely, activation of the parasympathetic division leads to a decrease in heart rate, facilitating a 'rest and digest' state. The sympathetic nerves release norepinephrine, which binds to adrenergic receptors causing an increase in heart rate. Parasympathetic nerves release acetylcholine, which binds to muscarinic receptors, resulting in a slowing of the heart rate.
Charles and francis darwin concluded from their experiments on phototropism by grass seedlings that the part of the seedling that detects the direction of light is the
Temperature is read by measuring the liquid in the thermometer using the scale on the thermometer. When the temperature rises, the liquid in the thermometer . When the temperature drops, the liquid in the thermometer .
Answer:
When the temperature rises, the liquid in the thermometer expands. When the temperature drops, the liquid in the thermometer contracts.
Explanation:
The thermometer is filled with a liquid called mercury. Increase in temperature makes this liquid to expand. The expanded liquid occupies most of the space in the thermometer causing a rise in its level.
On the other hand, a drop in temperature makes the liquid to contract. The contracted liquid has less volume and occupies lesser space in thermometer. This causes a drop in the level of liquid in thermometer.
The specific heat of a metal is 0.5 cal/ (0C.g). The heat required to raise temperature of 100 gram of that metal by 20 0C is
The heat required to raise the temperature of 100 grams of the metal by 20 degrees Celsius is 1000 calories.
Explanation:The heat required to raise the temperature of an object can be calculated using the formula:
Q = mcΔT
where Q is the heat energy, m is the mass of the object, c is the specific heat of the object, and ΔT is the change in temperature.
In this case, the metal has a specific heat of 0.5 cal/(0C.g), which means it requires 0.5 calories of heat energy to raise the temperature of 1 gram of the metal by 1 degree Celsius. So, for 100 grams of the metal, the heat required to raise its temperature by 20 degrees Celsius is:
Q = (100 g) * (0.5 cal/(0C.g)) * 20 0C = 1000 cal
Therefore, the heat required to raise the temperature of 100 grams of the metal by 20 0C is 1000 calories.
Final answer:
The heat required to raise the temperature of 100 grams of the metal by 20 °C is 1000 calories.
Explanation:
The specific heat of a metal is a measure of how much heat energy is required to raise the temperature of a given amount of the metal by 1 degree Celsius.
The specific heat of the metal in question is given as 0.5 cal/°C.g.
To find the heat required to raise the temperature of 100 grams of the metal by 20 °C, we can use the formula:
Heat = mass * specific heat * change in temperature
Substituting the given values into the formula, we get:
Heat = 100 g * 0.5 cal/°C.g * 20 °C
Calculation
Heat = 100 g * 0.5 cal/°C.g * 20 °C
Heat = 1000 cal
Therefore, the heat required to raise the temperature of 100 grams of the metal by 20 °C is 1000 calories.
Topographic maps represent an area's physical features by describing
Answer:
The maps are defined as the 2 dimensional representation of the earth's surface. The topographic maps are those maps that describes the topography of a particular area, the type of relief and the features that are present over the surface.
The topographic maps represents the physical features of an area by describing the following-
(1) Map scale- It is one of the most important data that enables the reader to understand how big or small the area is.
(2) Contour lines- These are lines of equal elevations. Each lines represents the height of that location above the mean sea level and they never intersect each other. Closely spaced contours indicates a steep slope, whereas widely spaced contours depicts a gentle slope.
In addition to this, the water bodies, rivers are often highlighted with bluish color.
Gene flow involves the spreading of alleles to and from a population. _______________ is the flow of genes into an area whereas _________________ is the flow of genes out of an area. A) immigration, emigration B) emigration, immigration C) founder effect, bottleneck effect D) bottleneck effect, founder effect
Answer: A) immigration, emigration
Explanation:
The gene flow can also be defined as the gene migration from one generation to another. The composition of the gene pool changes. Due to the genetic variability at the individual level the variation in the gene pool also increases. The gene flow occurs mainly because of migration of organisms from one region to another.
Immigration can be defined as the introduction of organisms in a new habitat. Emigration can be defined as the migration or departure of the organisms to a new habitat from their native habitat. Immigration will add new genes to the new habitat population gene pool. Emigration will limit the genetic variation in the gene pool.
On the basis of the above information, immigration is the flow of genes into an area whereas emigration is the flow of genes out of an area.
What makes one protein capable of a different function than other proteins?
almost all living organisms use the same basic biochemical molecules including blank
Answer:
Including DNA, ATP, and many identical or nearly identical enzymes.
Explanation:
All living beings are made up of cells and although the structures of an animal cell are different from a plant cell, which in turn is different from a bacterial cell and so on, all cells of all living beings have some similar molecules that It is vitally important for anyone to be alive. These molecules include DNA, ATP, and many identical or nearly identical enzymes.
It is through these similarities that it is possible to conduct comparative biochemistry studies, which shows the degree of similarity between individuals of the same species is related to the degree of kinship.
All living organisms utilize the same basic biochemical molecules such as proteins, lipids, carbohydrates, and nucleic acids, which are crucial for heredity and cellular functions.
Almost all living organisms use the same basic biochemical molecules, including proteins, lipids, carbohydrates, and nucleic acids. These molecules serve as the building blocks of life and are fundamental to the biological processes that occur within all forms of life. DNA and RNA, which are types of nucleic acids, play a crucial role in heredity and the regulation of cellular functions by coding for proteins. Proteins, which are made up of amino acids, perform a vast array of functions in organisms, ranging from structural support to catalyzing biochemical reactions as enzymes. Lipids and carbohydrates are integral in energy storage and structural components of cells, among other functions. This remarkable biochemical unity is a testament to the shared evolutionary history of all life forms.
The complex of proteins and dna in a nondividing cell is called
Answer:
chromatin
Explanation:
Chromatin (from the Greek chromatos, color) is a collection of strands, each formed by a long DNA molecule associated with histone molecules, a special type of protein. These wires are the chromosomes.
The chromatin filaments intersect eucromatin points with heterochromatin points. These two varieties of chromatin proceed differently according to the time of cell life. In the interphase, the segments of heterochromatin appear to be spiraled (similar to a telephone cord), while the segments of eurochromatin are distended. Thus, the chromonemas appear thicker and more colored at the heterochromatin points and are so thin that they are almost imperceptible at the level of the eurochromatin points.
Currents cause warmer and cooler temperatures in the areas where they are located.
True or False
Answer:
True
Explanation:
The currents bring warm and cool water with them. They can bring wind and rain. Currents are like under water wind.
What is a particulate?
a compound of oxygen and another element
a colorless, odorless radioactive gas
a tiny solid suspended in the atmosphere
a compound of carbon, chlorine, and fluorine
C. A particulate is a tiny solid suspended in the atmosphere.
A tiny solid or liquid particle suspended in the atmosphere is called a particulate. These particles, which include dust, pollen, soot, smoke, and liquid droplets, differ in size and composition. Particulates can come from man-made sources like automobile emissions and industrial processes, as well as natural ones like forest fires and volcanic eruptions.
Due to their small size, they can be inhaled and contribute significantly to air pollution, which may lead to health concerns such respiratory disorders and cardiovascular ailments.
Hydrogen peroxide is a substance that is produced as a byproduct of many cell processes. However, hydrogen peroxide is toxic to cells. In fact, if cells are unable to break down hydrogen peroxide, they become poisoned and die. Catalase is an enzyme that is found in all living tissues. This enzyme speeds up the reaction that breaks down hydrogen peroxide into less harmful substances. What substances are formed as a result of this reaction?
Answer:
Water and Oxygen
Explanation:
Hydrogen peroxide is a harmful substance that can damage the membrane system of the cell. Cells have catalase enzyme in peroxisomes. The enzyme catalase catalyzes the breakdown of hydrogen peroxide into water and oxygen. In this way, the potential causative agent of oxidative stress, that is hydrogen peroxide, is rendered harmless by enzyme catalase.
Only about 10 percent of the energy in an organism is passed on to the next level of a food chain. Look at this food chain: grass → rabbit → hawk What percentage of the energy stored by the grass is passed on to the hawk?
Which processes lead to most genetic variation in sexually reproducing organisms? select all that apply. select all that apply. crossing over cytokinesis independent assortment of chromosomes in meiosis random fertilization?
The processes that lead to most genetic variation in sexually reproducing organisms are the following;
- Crossing over – the process of exchanging genetic material that occurs during sexual reproduction
- Independent assortment of chromosomes in meiosis – the process where maternal chromosomes are not separated in a cell with the parental chromosomes separated
- Random fertilization – responsible for the sperm and the egg to meet
The processes that lead to most genetic variation in organisms with sexual reproduction include 'random fertilization', 'crossing over', and 'independent assortment of chromosomes in meiosis'.
Crossing over or recombination refers to the exchange of genetic material (DNA) between non-sister chromatids during Meiosis I (prophase I).
The independent assortment of chromosomes refers to the independent separation/segregation of hom-ologous chromosomes during Meiosis I (Anaphase I).
Random fertilization refers to the genetic diversity associated with the unlimited number of possible gamete (sperm and egg) combinations.
In conclusion, the processes that lead to most genetic variation in organisms with sexual reproduction include 'random fertilization', 'crossing over', and 'independent assortment of chromosomes in meiosis'.
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How many phenotypes for exoskeleton color are exhibited in the population?
The number of phenotypes for exoskeleton color are exhibited in the population should be black and white.
Calculation of the number of phenotypes:There are two types of phenotypes i.e. black and white. The beetles should be considered as the black phenotype it could be in BB or Bb genotype. While on the other hand, beetles should contains the white exo-skeletion that contains the bb genotype.
Therefore, The number of phenotypes for exoskeleton color are exhibited in the population should be black and white.
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Geologists have so far identified 1000 minerals. True or false?
if an organism did not respond to changing environmental circumstances by regulating gene expression, what is the most likely occurrence?
A. cellular reproduction would become uncontrolled.
b. cells would be unable to reproduce.
c. energy efficiency would be reduced.
d. enzymes would not be available when necessary.