Answer:
El término ciclo biogeoquímico se deriva del movimiento cíclico de los elementos que forman los organismos biológicos (bio) y el ambiente geológico (geo) e intervienen en un cambio químico. ... En los ciclos gaseosos, los nutrientes circulan principalmente entre la atmósfera (agua) y los organismos vivos.30 jul. 2017
Explanation:
How do you define professionalism
Answer:
The conduct ,aims or qualities that characterize or mark a profession or a professional person is known as professionalism.
Explanation:
Hope it helps.
The phase sequential mask is certified for use up to_____feet.
Answer:
The correct answer is "40,000".
Explanation:
According to the Federal Aviation Administration, the phase sequential mask is certified for use up to 40,000 feet, because above this level the pressure will not allow the lungs to take enough oxygen. A specialized system such as pressure demand is necessary in order to fly to higher altitudes. These systems provide oxygen under positive pressure conditions.
Why do increased temperatures decrease photosystem II activity?
Answer: Options are not given, here are the options.
a.Thylakoid membranes become more permeable to ions
b.The chlorophyll breaks down
c.The peripheral proteins lose their ability to bind to the transmembrane proteins
d.Water cannot bind to PSII to form oxygen
The correct option is C.
The peripheral proteins lose their ability to bind to the transmembrane proteins.
Explanation:
In photosystem 11, it is the center where light is converted to moving electrons. When the chlorophyll molecule absorb light, the electrons gain energy.
Increase temperature affects the activity of photosystem 11 because the peripheral protein lose their ability to bind to the transmembrane protein which is as a result of high temperature affecting the surface of ionic interactions which is for binding to transmembrane protein.
Which of the following are independent
variables?
A scientists measure how tall a plant grows
after feeding it fertilizer
The amount of dog food given to puppies is
decreased by a vet to see if they will lose
weight.
A scientist changes the amount of sunlight a
plant receives in an experiment to see how
they grow in different levels of light
The vet measures the weight of the puppies
after one week.
The amount of dog food given to puppies is decreased by a vet to see if they will lose weight and A scientist changes the amount of sunlight a plant receives in an experiment to see how they grow in different levels of light are independent variables.
Thus option B and C are correct.
What are the types of variable ?
In an experiment, the most important parameter is variable which can change such as amount of light, temperature, humidity etc.
Two major types of variables, independent variable which changes either on its own, or we purposely change it.
Change in Amount of light, environmental temperature, and humidity show effect on plant growth.
Dependent variable is depend on other variable such as independent variable.
Third one is controlled variable which must be taken as a parameter in an experiment in order to avoid the bias of the result.
Thus option B and C are correct.
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Which statement is true? A.Simple sugars are made of polysaccharides. B.Amino acids are made of proteins. C.DNA molecules are made of nucleotides. D.Glycerol is made of fatty acids.
Answer:
C. DNA molecules are made of nucleotides.
Explanation:
DNA molcules are made up of building blocks called nucelotides.
These nucleotides are made of a sugar group, nitrogen base, and phosphate group.
These nucelotides bond together to form a strand of DNA.
Answer:
its c
Explanation:
someone please help me with this :,,,,,,,,,,,)
Answer:
1. 1.26823082 mL
2. 0.5 g/mL
Explanation:
The density formula is:[tex]d=\frac{m}{v}[/tex]
1.
Rearrange the density formula for v,
[tex]d=\frac{m}{v}[/tex]
[tex]d*v=\frac{m}{v}*v[/tex] Multiply both sides by v.
[tex]d*v=m[/tex]
[tex]\frac{d*v}{d} =\frac{m}{d}[/tex] Divide both sides by d.
[tex]v=\frac{m}{d}[/tex]
Volume is found by dividing mass by density. The mass is 20 grams and the density is 15.77 grams per milliliter.
[tex]m= 20 \ g\\d= 15.77 \ g/mL[/tex]
Substitute the values into the formula.
[tex]v=\frac{20 \ g} {15.77 \ g/mL}[/tex]
Divide. Note the grams, g, will cancel.
[tex]v= 1.26823082 \ mL[/tex]
2.
Use the density formula.
[tex]d=\frac{m}{v}[/tex]
Density is found by dividing mass by volume. The mass is 10 grams and the volume is 20 milliliters.
[tex]m= 10 \ g\\v= 20 \ mL[/tex]
Substitute the values into the formula.
[tex]d=\frac{10 \ g}{ 20 \ mL}[/tex]
Divide.
[tex]d= \frac{1}{2} \ g/mL[/tex]
[tex]d= 0.5 \ g/mL[/tex]
A population of salamanders lives near a stream. A severe drought dries up the flow of the stream. What is this effect on the salamander population called? Group of answer choices: emigration limiting factor immigration biotic factor
Answer:
limiting factor
Explanation:
In an ecosystem, certain factors hinder the growth or abundance of the population of organisms. These factors are called LIMITING FACTORS. Limiting factors, which can be biotic, food, drought, predation, disease etc, are factors that inhibits a population of organism from becoming enlarged. There are two types of limiting factors viz: density dependent (depends on size) and density independent (not dependent on size).
This is the case of a drought that dries up the stream that inhabits a population of salamanders. The drought causes the unavailability of water, which will ultimately have an effect on the growth of the salamander population. Hence, the DROUGHT is considered a LIMITING FACTOR.
These two substances can enter a cell through the phospholipids. Oxygen and carbohydrates Carbon dioxide and sugar Oxygen and sugar Oxygen and Carbon Dioxide
Answer:
Oxygen and Carbon Dioxide
Explanation:
Oxygen and carbon dioxide can enter cells through the phospholipid bilayer through simple diffusion with the concentration gradient.
This is because these substances are small and uncharged.
Other molecules like sugars and carbohydrates are too big to enter through the phospholipids.
The monomer of DNA is nucleotides. Which type of macromolecule is DNA
Answer: Nucleic Acid
Explanation:
Made out of nucleotides
What happens during telophase II of meiosis?
Answer:
A nuclear envelope forms around each set of chromosomes and cytokinesis occurs, producing four daughter cells, each with a haploid set of chromosomes.
Explanation:
Answer:
A total of four daughter cells form.
Explanation:
Which of the following correctly describes the image below?
Protein Molocule
RNA Molocule
Amino Acid
Carboxylic Acid
Evaporative cooling is a product of evolution that has evolved in some organisms for use under certain environmental conditions. Circle the organisms or conditions below that you think are most likely to use evaporative cooling.
Answer:
In order to lower the temperature.
Explanation:
Mammals and birds uses evaporative cooling due to their high body temperature because this evaporative cooling removes the high temperature from the body. In this process, the water present in the body absorb all the extra heat and remove this extra heat from the body with change its state from liquid to vapors and the body's temperature cools down. This evaporative cooling is occurs in the process of sweating.
A horticulturist (plant scientist) complains to the city that a nearby residence is ruining his flowers because of the detergent being used to wash their cars. The soap runs into a stream that goes near his flower beds. As an inquiring scientist, you want to find out whether soap can affect flower growth. You will need to set up your experiment (using the animation below) and publish your findings (see questions below). Write your hypothesis (should be in a complete sentence and describe what exactly is being tested)
Answer:
IF flowers are exposed to detergent, THEN the flowers will grow poorly
Explanation:
Hypothesis of an experiment gives a testable explanation to a problem. It is a predictive statement that explains the possible solution to a given problem, but subject to testing via experimentation. Hypothesis usually goes in an IF (cause), THEN (effect) format. That is, it shows how an independent variable will affect the deoendent variable.
In this experiment involving the effect of soap on flower growth, a possible hypothesis will be that: IF flowers are exposed to the detergent, THEN the flowers will grow poorly. This hypothesis, which is subject to testing by conducting an experiment, gives a possible solution to the problem of how detergent is affecting plant growth.
Notice that the by-products of one process are used as the reactants for the other process. This is referred to as the ____________ of molecules.
Answer:
cycling of molecules
Explanation:
In a cell, the flux of energy is associated to the cycling of molecules among subcellular compartments. In coupled reactions, the cycling of molecules between mitochondria and chloroplasts is required to produce the flow of energy and to sustain the life of the Earth. Chloroplasts produce chemical energy by using solar energy to convert water and carbon dioxide (CO2) into oxygen (O2) and high energy carbohydrates (i.e., sugars and starches). Subsequently, in the mitochondria, the process of cellular respiration enables to convert the carbohydrates into high energy molecules (ATP), releasing water and CO2.
1) An example of International System of Measurement (SI) unit is: A) pound B) mile C) liter D) ounce
Answer:
pound
Explanation:
In an experiment, the thing you compare your experimental results to is called the
the thing you compare your experimental results to is called the control group.
What do you mean by control group?Control group is the standard to which comparisons are made in an experiment. Many experiments are designed to include a control group and one or more experimental groups.
Moreover, some experiments use multiple control groups to gather more information and improve the accuracy of results. For example, many medical studies include positive, negative and placebo.
The control group and experimental group are compared against each other in an experiment. The only difference between the two groups is that the independent variable is changed in the experimental group.
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Which is a component of cell theory? Cells come from bacteria. Cells come from cells. Cells come from nonliving matter. Cells come from non-cells.
Answer:
B
Explanation:
Cells come from cells is correct component of cell theory.
What is Cell theory?Theodor Schwann put forth the classical cell theory in 1839. This theory consists of three components.
All organisms are composed of cells, according to the first section. The basic building blocks of life are cells, according to the second section. The conclusions reached by Schwann and Matthias Schleiden in 1838 as a result of contrasting their observations of plant and animal cells served as the foundation for these sections.
Rudolf Virchow described the third element, which claims that cells originate from preexisting cells that have multiplied, in 1858 when he said omnis cellula e cellula (all cells come from cells).
Therefore, Cells come from cells is correct component of cell theory.
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What are the three types of symbiotic relationships? with definitions please
Answer:
The three types of symbiotic relationships are mutualism, parasitism, and commensalism. In mutualism, both organisms gain something, in parasitism, one organism gains and the other loses, and in commensalism, one gains and the other doesn't gain or lose
Answer:
living in close association.
Explanation:
A change in genotype, but not in phenotype, is most likely due to _________.
A change in genotype, but not in phenotype, is most likely due to neutral mutation.
A mutation consists of a spontaneous and unpredictable change in the sequence of genes that make up the DNA of a living being.
A neutral mutation is one that has no consequences on the phenotype, that is, it has no effect on the observable characteristics of an organism.Neutral mutations has effects on the genotype because it generates a change in the order of nucleotides that creates triplets that code for equivalent amino acids as basic amino acids.Therefore, we can conclude that a neutral mutation does not affect the viability of the living being.
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Select the correct answer.
Which act or regulations protect the AFN industry from food emergencies?
OA
Federal Insecticide, Fungicide, and Rodenticide Act
Homeland Security Presidential Directives
OB
OC Comprehensive Environmental Response Directives
Perishable Agricultural Commodities Act
Reset
Next
Answer:
Homeland Security Presidential Directives help in food emergencies
Explanation:
What is the primary function of the phospholipid in the cell membrane
Answer:
The primary function of the plasma membrane is to protect the cell from its surroundings
The monomers that are joined by glycosidic linkages to form biological polymers are
Answer:
They form carbohydrates. The monomers are called monosaccharides.
Explanation:
Answer: Monosaccharides
Scientific models can never be changed.
Please select the best answer from the choices provided
OT
F
Answer:F
Explanation:I got it right
The sporophyte stage begins with the information of
According to evolutionary theory, behaviors that optimize survival and reproduction are favored by natural selection and therefore more likely to persist. How, then, can we explain the evolution of altruism, which is by definition costly to the self
Answer:
Altruism could be helpful for the survival of relatives
Explanation:
Altruism behavior is produced when an organism decreases its fitness in order to increase the chances of survival in other individuals in the population. It is believed that altruistic behavior could have evolved as an adaptation associated with the survival of relatives from the same family. In consequence, if this were the case, altruism could ultimately be considered as a selfish behavior because it aims at passing on of genes through the survival of relatives which could benefit with this behavior.
Which substance is produced as a by-product of both glycolysis and aerobic respiration?
Answer:
Carbon dioxide and water I believe
Explanation:
Which of the following is not true regarding how organisms are able to exchange information via cell signaling in response to both internal changes and environmental cues?a. Cells communicate by direct contact.b. Cells communicate over both short and long distances.c. Hormones are reached by all cells but only target some cells.d. Secreting cells affect all neighboring cells
Answer:
Secretory cells affect all neighboring cells
Explanation:
The secretory cells affect only the cells that contain the receptor for the hormone they release, that is why it does not matter if the cell is contiguous, adjacent or distant, the target cell will only be affected by the hormone regardless of the proximity because it has a specific receptor.
Pine trees that are too tall or too short do not do as well as pine trees that are average in height. The short trees do not get as much sun and the tall trees break off in storms. How is this an example of stabilizing selection.
Answer:
The first Constitutional Amendments were proposed shortly after the Constitution itself. Larely focussed on protecting individual liberties
Explanation: isn't it.
What are the most common causes of agriscience accidents?
Answer:
Overturning machinery.
Explanation:
Hope this helps <3
What does the presence of these coral fossils suggest about the location of North America 370 million years ago?
Answer:
These fossils indicate that North America must have had a much warmer (i.e a tropical environment 370 million years ago)
Explanation:
Corals are marine animals whose skeletons are easily fossilized and thus have an extensive fossil record. There are many fossils of extinct corals in North America. For example, Lophophyllum is a North American extinct genus of corals dated at 320 million to 290 million years ago (i.e., from the Late Carboniferous period). In general, corals live in warm seawater, and thereby their fossil records can be used as indicators of environmental conditions.