Answer:
Low fertility rates that cause long-term population decline can also lead to population ageing, an imbalance in the population age structure. Population ageing in Europe due to low fertility rates has given rise to concerns about its impact on social cohesion.
On the diagram below,circle the following
Answer:
where is the following??
Answer:
an electron in the hydrogen atom makes a transition from an energy state of principle quantum number ni to n=2state if the photon is emitted has a wavelength of 434 what is the value of the ni
What is adaptive radiation?
A. the evolution of two species from a single ancestor in a short amount of time
B. the evolution of many species from a single ancestor in a short amount of time
C. the evolution of many species from a single ancestor over a long period of time
D. the evolution of two species from a single ancestor over a long period of time
Answer:
C. The evolution of many species from a single ancestor over a long period of time
why do cell biologists study yeast?
Biologists study cells due to the cell relation to that of animal cell
What are yeasts?Yeast are eukaryotic organisms which are part of the fungus kingdom.
They are important to biologist because they tend too carry out all the functions of the eukaryotic cells and they are known to be closely related to animals
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The first three strata of the epidermis consists of ______ keratinocytes and the most superficial strata contain ______ keratinocytes.
The first three strata of the epidermis consists of living keratinocytes and the most superficial strata contain dead keratinocytes.
What is epidermis and its function?
The cutin with the wax provides protection against fungi, bacteria and some insects. The main function of the epidermis is the coating, preventing the action of pathogenic agents, reducing injury by mechanical shocks and preventing water loss.
As the epidermis is the most superficial tissue that the body has, in this part there are living and dead cells at the same time.
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Membrane proteins that bind to signal by which cells communicate are called
Membrane proteins that bind to signal by which cells communicate are called receptors are generally transmembrane protein.
What is the function of the stop sequence to a transmembrane protein?When the protein presents an internal signal sequence (SSI), this sequence, in addition to directing the transport of the translational complex to the REG, will also act as an SPT, with the carboxy-terminal portion of the protein facing the lumen. from the reticulum or into the cytosol.
in this case, many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane.
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Most human cells range from 10 to 15 micrometers in diameter. What limits how large a cell can get
The relationship between its volume and surface area limits how large a cell can get.
What is cell range?The range of a cell is defined as the quantity of material that can be found within a cell with respect to the surface area.
The range of a cell is limited by the volume and the surface area which means that the wider the surface area the more volume the cell can contain.
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Which part of the chemical equation is incorrect
The part of the chemical equation is incorrect is The solution is 10 02, it ought to de 1302.For carbon, on each aspects, there are eight carbon atoms.For hydrogen, on each aspects there are 20 hydrogen atoms.
What a part of a chemical equation are you able to by no means alternate?When you stability an equation you could most effectively alternate the coefficients (the numbers in the front of molecules or atoms). Coefficients are the numbers in the front of the molecule. Subscripts are the smaller numbers observed after atoms. These can not be modified while balancing chemical equations.
The complete question is Which part of the chemical equation is incorrect which is 2C4H10+ 10O2 - 8CO2+10H2O.
To realize if a response is properly balanced among the reactants and the products, you need to calculate the wide variety of atoms of every detail on each aspect of the response and to test if they may be equal.For oxygen, there are 20 oxygen atoms withinside the reagents and 26 withinside the products, so it's miles essential to grow the wide variety of oxygen withinside the reactants (with out touching the others). For this we positioned thirteen 02 withinside the reactants rather than 10, to have 26 oxygen atoms on every side.Read more about the equation :
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A strand of mRNA has the bases cytosine-cytosine-uracil. Which amino acid corresponds to these bases?
A. leu
B. pro
C. ser
D. phe
What happens when a phase in the cell cycle does something incorrectly / doesn't do its required tasks, what happens to the cells that are impacted by those errors and what effect does it have on other cells in the cell cycle?
When a phase in the cell cycle does something incorrectly, mutation occur which leads to cell death or cancer.
What happens when a phase in the cell cycle does something incorrectly?When a phase in the cell cycle does something incorrectly, then they cannot move to opposite poles in the later phases of mitosis, which result the cell with extra chromosomes and a daughter cell with missing chromosomes. These mutations can lead cell death, disease or cancer.
So we can conclude that When a phase in the cell cycle does something incorrectly, mutation occur which leads to cell death or cancer.
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Anatomy is the study of atom in space.
True
False
Answer:
false anatomy is the study or review of an object more popular is the human anatomy
Answer: false
Explanation: Each element has a specific number of protons in the nucleus.
A red blood cell has been placed into three different solutions. One solution is isotonic to the cell, one solution is hypotonic to the cell, and one solution is hypertonic to the cell. Determine which type of solution is in each beaker based on the cell's reaction. Drag each item to the appropriate bin.
The type of solution in each beaker based on cell's reaction are :
Isotonic solution : Normal reactionHypotonic solution : The cell becomes turgidHypertonic solution : The cell becomes deformedMatching each solution to the cell reaction
When the red blood cell is placed in an isotonic solution the solvent flows in and out of the blood cell at the same rate, when the cell is placed in a hypotonic solution the solvent flows into the cell at a faster rate causing the cell to swell ( becomes turgid ) also when the cell is placed in a hypertonic reaction the cell becomes deformed becomes it loses more water than it absorbs.
Hence we can conclude that The type of solution in each beaker based on cell's reaction are : Isotonic solution : Normal reaction, Hypotonic solution : The cell becomes turgid, Hypertonic solution : The cell becomes deformed
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Energy is needed to carry out all cellular processes. True Flase
Answer: true
Explanation: Inside every cell of all living things, energy is needed to carry out life processes. Energy is required to break down and build up molecules and to transport many molecules across plasma membranes.
hope this helps
Answer:
False
Explanation:
Not all cellular processes need energy in order to be carried out example .diffusion of particles across a cell membrane do not require energy .since diffusion is a passive form of transport(do not require energy).
Consider the following prediction. Prediction: If tomato plants are harmed by NoGro herbicide, then an increase in the concentration of NoGro herbicide in the supplied water will result in a decrease in the average height of the tomato plants over a one-year period. Which of the following best describes this prediction?
OA. The prediction is not useful because it has not yet been peer- reviewed by other scientists.
OB. The prediction is useful because it summarizes what is already known about a particular research question.
OC. The prediction is not useful because it fails to mention the name of the scientist doing the experiment.
OD. The prediction is useful because it explains what observations will be made if a hypothesis is true
The statement that describes this prediction is as follows:
The prediction is useful because it explains what observations will be made if a hypothesis is true.Thus, the correct option is D.
What is Herbicide?Herbicide may be defined as a chemical agent that is responsible for destroying or inhibiting the growth of a particular plant as compared to the normal one.
The projection is necessary because it supports the product after a one-year duration. So for example, if after one year there is undoubtedly a reduction in the intermediate height of the tomato plants, then we can absolutely say that it is because of the existence of NoGro herbicide which is supplied in water.
Therefore, it is well described above.
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What is the correct order for respiration?
Which of the following choices is a goal of science?
A. To make people happier
B. To explain how things work
C. To increase a company's sales
D. To support the government
Which of the connective tissue coverings around nervous tissue is rich in collagen fibers?.
Answer:
epineurium
Explanation:
epineurium
What adaptations does the small intestine make for absorption?
The small intestines are well adapted for absorbing nutrients during digestion by being very long, having villi and microvilli that increase surface area, using muscular contractions to move and mix food, and receiving and housing digestive enzymes and bile that help the breakdown of food.
The adaptations in which the small intestine make for absorption is the presence of a finger-like structure called villi.
What is Villi?These are finger-like structures found in the small intestine which increase the surface area for absorption.
They possess blood vessel which ensures the nutrients are transported to other parts of the body.
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c. In what ways could you reduce your water usage if there was a water shortage?
During isovolumetric phases of the cardiac cycle, a. The atria are contracting and all heart valves are closed. b. All heart valves are closed. c. The ventricles can only be relaxing. d. The atria are contracting. e. Blood is being ejected into the aorta.
During isovolumetric phases of the cardiac cycle, the atria are contracting.
What happen in isovolumetric phases of the cardiac cycle?The isovolumetric contraction occurs in isovolumetric phase that causes left ventricular pressure to rise above atrial pressure. This leads to opening of aortic valve at the end of isovolumetric contraction when left ventricular pressure exceeds aortic pressure.
So we can conclude that during isovolumetric phases of the cardiac cycle, the atria are contracting.
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Is the activity of altering the existing business processes and desgining new ones to take advantage of new information systems
Business process management can be described as the activity of altering the existing business processes and desgining new ones to take advantage of new information systems.
What is Business process management?Business process management is the process of resigning new business process as well as modifying existing processes in order to leverage new information systems available for businesses.
Therefore, business process management can be described as the activity of altering the existing business processes and desgining new ones to take advantage of new information systems.
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The North Atlantic right whale was classified as an endangered species in 2015. A major cause of death for these whales is collisions with shipping vessels. Several measures have been enacted to prevent such collisions in regions with a high abundance of right whales. In 2002 and 2006, shipping vessel lanes were rerouted around some of these regions. In 2008, speed restrictions were placed on the shipping vessels that were permitted to travel through these regions.
The graph below shows the estimated abundance of North Atlantic right whales from 1990 to 2015. The years in which these measures were enacted are marked on the graph.
The data in the graph is best supported by : ( D ) While changes to vessel lanes and speeds may have been beneficial to right whales, additional actions are needed to prevent population declines.
Description from the GraphFrom the data presented in the graph the population of the right whales was favored by the changes in vessels lanes but the population began to decline again in and around 2009 therefore this is evident that additional actions are needed to prevent population declines other than changing vessel routes and placement of speed restrictions.
Hence we can conclude that While changes to vessel lanes and speeds may have been beneficial to right whales, additional actions are needed to prevent population declines.
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Missing part of the question
What conclusion is best supported by the data in the graph?
A. Modifying shipping lanes is the most effective method of encouraging population growth in right whales.
B. Limiting shipping vessel speeds is the most effective method of preventing population decline in right whales.
C. Changes to vessel speeds and lanes have been effective in preventing population
declines in the right whale population, and no further actions are needed.
D. While changes to vessel lanes and speeds may have been beneficial to right
whales, additional actions are needed to prevent population declines.
Question 3 of 10
What was the purpose of treating the radish seeds for the lab "Radical
Radishes" with radioactive cobalt-607
O A. To cause mutations in the radish embryos
B. To hybridize normal radish DNA with a radioactive DNA probe
C. To kill all the living microorganisms on the seeds
D. To produce labeled probes with radish DNA
SUBMIT
The purpose of treating the radish seeds for the lab "Radical Radishes" with radioactive cobalt-607 is to hybridize normal radish DNA with a radioactive DNA probe. Thus, the correct option is B.
What are Probes?Probes may be characterized as a single-stranded sequence of DNA or RNA manipulated to explore its complementary sequence in a sample genome.
The radioactive elements in the research are used for hybridizing the radioactive probes that are labeled in the genome sample which is under investigation.
Therefore, the correct option is B.
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Discuss the relationship between the digestive systems a carnivore and herbivore and compare the length of the digestive system and diet of that animal
Herbivores have longer digestive systems than carnivores have.
How the herbivores have longer digestive systems compared to carnivores?We can conclude that the herbivores have longer digestive systems compared to carnivores.
Carnivores feeds on other animals whereas herbivores eats plants.Most herbivores have a four stomach compartment system that helps them process and digest their food.This is because they have to process cellulose in plants which needs to be properly broken down.Flesh-eating carnivores do not require this arrangement.The four stomach compartment of most herbivores includes Rumen, Reticulum, omasum and abomasum.They also chew the cud whereby they regurgitate food materials.Thus, this could be the answer.
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Describe the relative thicknesses of the walls of the heart chambers of the fetal pig.
The description of the relative thickness of the walls of the heart chambers is that; the heart chambers themselves are thin, but the heart chambers are very thick.
What is the wall of the heart?
The heart chambers are composed of four hollow spaces within your heart. They are;
Two atria (upper chambers) - one to your right atrium and one to the left atrium.
Two ventricles (lower chambers) - One to your right ventricle and one to your left ventricle. Each of these chambers plays an important role in your heart's functioning.
Finally, the description of the relative thickness of the walls of the heart chambers is that; the heart chambers themselves are thin, but the heart chambers are very thick.
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1. do you think erythropoietin levels in athletes at low altitude are lower, higher, or the same after training at a high altitude for 2 months?
2. calculate the average ml of oxygen molecules in 100 ml blood in the athletes at low altitude and then in athletes in high altitude while training at high altitude. use the following information: 1.39 ml of oxygen per gram of hemoglobin.
3. do athletes training at high altitudes have more or less oxygen molecules per ml of blood then athletes training at low altitudes? explain why this difference gives athletes who train at high altitudes an advantage over athletes who train only at low altitudes.
results
table: effect of altitude on hct and hb
low altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 52 21 40 14.5
subject 2 49 20 41 14.4
subject 3 48 21 44 14.6
average 4 50 21 42 14.5
high altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 49 22 45 17.4
subject 2 50 22 44 17.3
subject 3 50 22 44 17.3
subject 4 50 22 44 17.3
1. Erythropoietin will be higher at low altitude. Erythropoietin or EPO level will be higher because of the raised blood oxygen training but its lasting period will depend on the training content as here it is only 2 months.
About high erythropoietin:
Among the objectives of altitude training is to improve athletes' sea-level endurance performance by raising blood oxygen carrying capacity. The attainment of improved haematological variables is mostly due to the augmented erythropoietin (EPO) production in hypoxia. The duration of exposure and degree of hypoxia affect the level of the erythropoietin EPO rise and the rate of erythropoiesis acceleration. The haematological response to altitude training may also be influenced by a wide range of additional factors.
2. 100 ml of blood contain 27.8 mL of oxygen. This can be said as it has been shown that a healthy person typically possesses 20 grammes of haemoglobin in every 100 millilitres of blood.
Procedure:
=20∗1.39
=27.8mL
Amount of oxygen found in 11 grams of hemoglobin is equal to 1.39 milliliters of oxygen.
Thus, the total amount of oxygen in milliliters would be equal to product of total weight of hemoglobin and the total amount of oxygen in ml in one gram of hemoglobin.
3. Athletes training at high altitude have more oxygen molecules. They have an advantage as a result of having more red blood
Why so:
Higher elevations have thinner air, which has less oxygen molecules per volume of air. The body therefore makes more red blood cells when athletes workout at these high elevations. For up to 20 days, these additional blood cells remain in the body. Also as a result of having more red blood cells, their blood can carry more oxygen. When they compete at lower elevations, their muscles naturally get a boost from more oxygen.
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How is research from college/ universities doing to help stop coronavirus or stop the spread?
Answer:
I added an answer I am afraid it was wrong and I am new I don't know how to delete an answer, so I just edited and wrote this
Explanation:
Answer: i do not know
if this is correct
Explanation:
1. Conducting research
2. Sharing data and information
3. Boosting medical personnel
4. Putting idle facilities to good use
5. Offering ethical guidance
A titmouse and a chickadee are living in the same territory and are using some of the same resources. the best way to classify this interaction is as:
The best way to classify an interaction between titmouse and a chickadee living in the same territory and using some of the same resources is competition.
What is competition?Competition is an interaction between living organisms or species in which both require a resource that is scarce in supply.
According to this question, a titmouse and a chickadee are living in the same territory and are using some of the same resources.
This suggests that the interaction between titmouse and a chickadee living in the same territory and using some of the same resources is competition.
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With ideal environmental factors, the reproduction rate of bacteria is...
With ideal environmental factors, bacteria are able to reproduce at a very rapid pace.
Bacterial reproductionBacteria reproduce mainly by a single cell dividing into two, given the right condition. In order words, they reproduce by binary fission.
When environmental conditions are optimum, a typical bacterial cell can divide every 4 to 20 minutes depending on the species.
The time can become longer with sub-optimal environmental conditions.
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Without undergoing any changes itself, the _____ makes changes to the ______.
Without undergoing any changes itself, the enzyme makes changes to the substrate.
What is an enzyme?An enzyme is a biological catalyst that acts by lowering the activation energy in a chemical reaction.
In a chemical reaction, an enzyme binds to a substrate to convert it to one or more products.
In conclusion, without undergoing any changes itself, the enzyme makes changes to the substrate.
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how does binary fission differ from multiple fission
Answer:
Here's a couple of things...
Binary fission results in two daughter cells while multiple fission results in numerous daughter cells
Binary fission occurs under favorable condition while multiple fission occurs under unfavorable condition
Binary fission is where the parental body divides once while multiple fission is where the parental body divides repeatedly
Explanation:
Hope this helps you!
Answer:
binary means two multiple many
Explanation:
many cells dividing into many more cells
