Answer:
having traits that help a single organism survive
a person who is more than 2o percent heavier than the average person of the same sex and height is said to be
Answer:
overwieght
Explanation:
Major difference between messaging via the nerves and hormones
Answer:
the nerves produce immediate but short-living responses while hormo nes produce slow but short-living responses
Explanation:
i hope this will help you
What is the number of this particle in a phosphorus atom?
Ap ex
Answer:
Fósforo
Símbolo P, número atómico 15, peso atómico 30.9738. El fósforo forma la base de gran número de compuestos, de los cuales los más importantes son los fosfatos. En todas las formas de vida, los fosfatos desempeñan un papel esencial en los procesos de transferencia de energía, como el metabolismo, la fotosíntesis, la función nerviosa y la acción muscular. Los ácidos nucleicos, que entre otras cosas forman el material hereditario (los cromosomas), son fosfatos, así como cierto número de coenzimas. Los esqueletos de los animales están formados por fosfato de calcio.
Cerca de tres cuartas partes del fósforo total (en todas sus formas químicas) se emplean en Estados Unidos como fertilizantes. Otras aplicaciones importantes son como relleno de detergentes, nutrientes suplementarios en alimentos para animales, ablandadores de agua, aditivos para alimentos y fármacos, agentes de revestimiento en el tratamiento de superficies metálicas, aditivos en metalurgia, plastificantes, insecticidas y aditivos de productos petroleros.
De casi 200 fosfatos minerales diferentes, sólo uno, la fluoropatita, Ca5F(PO4)3, se extrae esencialmente de grandes depósitos secundarios originados en los huesos de animales y que se hallan en el fondo de mares prehistóricos, y de los guanos depositados sobre rocas antiguas.
La investigación de la química del fósforo indica que pueden existir tantos compuestos basados en el fósforo como los de carbono. En química orgánica se acostumbra agrupar varios compuestos químicos dentro de familias llamadas series homólogas.
Esto también puede hacerse en la química de los compuestos de fósforo, aunque muchas familias están incompletas. La familia mejor conocida de estos compuestos es el grupo de cadenas de fosfatos. Las sales de fosfatos constan de cationes, como el sodio, junto con cadenas de aniones, como (PnO3n+1)(n+2)-, que pueden tener de 1 a 1 000 000 de átomos de fósforo por anión.
Los fosfatos se basan en átomos de fósforo rodeados en una disposición tetraédrica por átomos de oxígeno, el miembro más pequeño de la familia es el anión simple PO3-4 (el ion ortofosfato). La familia de las cadenas de fosfato se basa en hileras alternadas de átomos de fósforo y oxígeno en que cada átomo de fósforo permanece en el centro de un tetraedro de cuatro átomos de oxígeno. Hay también una familia estrechamente relacionada de fosfatos cíclicos.
Una característica estructural interesante de muchos de los compuestos del fósforo conocidos es la formación de estructuras tipo jaula. Ejemplos de estas moléculas son el fósforo blanco, P4, y uno de los pentóxidos de fósforo, P4O10. Las estructuras tipo red son comunes; por ejemplo, los cristales de fósforo negro en que los átomos están enlazados unos con otros.
En la mayor parte de sus compuestos, el fósforo está enlazado químicamente a cuatro átomos inmediatos. Hay gran número de compuestos en los que uno de los cuatro átomos está ausente y en su lugar hay un par de electrones no compartidos.
Hay también unos cuantos compuestos con cinco o seis átomos unidos al fósforo; son muy reactivos y tienden a ser inestables. Durante los años 60 y 70, se prepararon muchos compuestos orgánicos de fósforo. La mayor parte de estas estructuras químicas incluye tres o cuatro átomos enlazados al fósforo, pero existen también estructuras con dos, cinco o seis átomos unidos a cada átomo de fósforo.
Casi todo el fósforo utilizado en el comercio está en forma de fosfatos. La mayor parte de los fertilizantes fosfatados constan de ortofosfato diácido de calcio u otofosfato ácido de calcio muy impuros, Ca(H2PO4)2 y CaHPO4. Estos fosfatos son sales del ácido ortofosfórico.
El compuesto de fósforo de mayor importancia biológica es el adenosintrifosfato (ATP), que es un éster de la sal, el tripolifosfato de sodio, muy utilizado en detergentes y ablandadores de agua. Casi todas las reacciones en el metabolismo y la fotosíntesis requieren la hidrólisis de este tripolifosfato hasta su derivado pirofosfato, llamado adenosindifosfato (ADP).
Efectos del Fósforo sobre la salud
El Fósforo puede ser encontrado en el ambiente más comúnmente como fosfato. Los fosfatos son substancias importantes en el cuerpo de los humanos porque ellas son parte del material de ADN y tienen parte en la distribósforo que es conocida. Cuando el fósforo blanco ocurre en la naturaleza este puede ser un peligro serio para nuestra salud. El fósforo blanco es extremadamente venenoso y en muchos casos la exposición a él será fatal. En la mayoría de los casos la gente que muere por fósforo blanco ha sido por tragar accidentalmente veneno de rata. Antes de que la gente muera por exposición al fósforo blanco ellos a menudo experimentan náuseas, convulciones en el estómago y desfallecimiento. El fósforo blanco puede causar quemaduras en la piel, dañar el hígado, corazón y riñones.
Efectos ambientales del Fósforo
Answer:
Name: Phosphorus
Symbol: P
Atomic Number: 15
Atomic Mass: 30.974 atomic mass units
Number of Protons: 15
Number of Neutrons: 16
Number of Electrons: 15
Melting Point: 44.1° C
Boiling Point: 280.0° C
Density: 1.82 grams per cubic centimeter
Normal Phase: Solid
Family: Nonmetals
Period: 3
Cost: $4 per 100 grams
Origin of Name From Greek words phos, meaning light and phoros meaning bearer
Date and Place of Discovery In 1669 in Germany
Discovered by Hennig Brand
Explanation:
A physical oceanographer studies all of the following except:
Select one:
a. Currents
b. Waves
c. Tides
d. Fish
Check
Answer:
D
Explanation:
It is the only one that doesn't deal with things like ocean traits
Which best describes the relationship between evolution and natural selection?
O Natural selection leads to evolution.
O Evolution leads to natural selection.
O Natural selection is the same as evolution.
O Evolution and natural selection are not related.
Mark this and return
Save and Fxit
Answer:
natural selection leads to evolution
Explanation:
Natural selection leads to evolution. Therefore, the correct statement is option A.
What is natural selection?Evolution is a result of natural selection. Natural selection is an evolutionary mechanism that rewards people with specific features that help them live and procreate more successfully than those lacking such traits. New species evolve as a result of an increase in the frequency of these favorable features in the population throughout time.
Natural selection is a major force behind evolution in this way. However, other processes, such genetic drift, gene flow, and mutation, can also lead to evolution.
Natural selection and evolution are separate but closely connected ideas. It is one of the mechanisms that propels evolutionary change through time; as such, it is a mechanism of evolution. It acts on the genetic variation present in a population, favoring traits that increase an organism's reproductive success in a given environment.
Therefore, natural selection leads to evolution.
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Carly has wavy hair. Her father has straight hair, and her mother has curly hair. Which type of inheritance pattern is responsible for Carly’s wavy hair?
A.
codominance
B.
dominant
C.
incomplete dominance
D.
polygenic
E.
recessive
Answer:
Incomplete Dominance
Explanation:
Through advancements, we are now able to classify
organisms into three domains by analyzing the______. Fill in the blank.
Answer:
rRna
Explanation:
Answer:
by analyzing the Ribosomal RNA
Explanation:
took the test :)
What industry was created when people suddenly had more time and money available?
In which life stage can butterflies reproduce?
Answer:
Explanation:
All butterflies have "complete metamorphosis." To grow into an adult they go through 4 stages: egg, larva, pupa and adult. Each stage has a different goal - for instance, caterpillars need to eat a lot, and adults need to reproduce.
nvm answer was c i guessed right
Answer:
Nucleus
Explanation:
The arrow is pointing to the nucleus.
Nucleus is a large organelle found in the center of animal cells. And it contains RNA & DNA ( A thread like structure that contains hereditary information)
A plant grows faster and fuller due to large amounts of fertilizer. If the plant cross-pollinates with another plant later, how will the use of fertilizer on the parent plant affect the plant’s offspring?
Answer:
The answer is "C" because nothing that your parents do, unless it directly affects/changes the gametes, will pass down to the offspring. Fertilizer is like food, how much your parents have eaten in their childhoods will have no effect on if you are under or over weight. (Unless their weight was by a genetic cause, that might have been passed on to you.)
Explanation:
One of the most important factors in the rapid spread and dispersal of zoonotic diseases in the modern world is : a. increased demand for meat b. improved transportation including high-speed rail and air lines c. wind dispersal d. none of the above
Answer:
a. increased demand for meat
Explanation:
Zoonotic diseases refers to those diseases that are transferred to human host from an animal carrier. Zoonotic diseases can be transmitted when a living host is bitten by an animal or insect, eats a contaminated food and more. Examples of zoonotic diseases are; rabies, bird flu, anthrax, ebola etc.
Among the causes of zoonotic diseases, one of the most significant factors in the rapid spread and dispersal of zoonotic diseases in this modern world is the increase in demand for meat. Considering that eating contaminated and infected food from an animal can transfer the disease, an increase in demand for meat is one factor to look into regarding why zoonotic diseases are proliferating.
Question 5 of 10
2 Points
To test how fertilizer affects tomato plants, a farmer divided a field of young
tomato plants into 10 plots of equal size. The farmer then put fertilizer on half
of the plots and no fertilizer on the other half of the plots. The control group
in this experiment was:
A. all the plots in the field.
B. the tomato plants in all the unfertilized plots.
C. all the tomatoes planted in the field.
a
D. the tomato plants in all the fertilized plots.
Answer:D
Explanation:
Answer:
B. the tomato plants in all the unfertilized plots.
Explanation:
hope it helps .
Imagine a car as a model that represents the human body, with its parts performing various functions similar to human body systems. Which two statements are correct analogies?
Answer:
CDK and P53
Explanation:
I'm not sure about this but when I was learning about Eukaroytoic cell cycle, our analogy to learn the factors was the gas and break pedal. CDK is the gas pedal because it promotes cell division and P53 stops it
what is measurement
Measurement is defined as the act of measuring or the size of something. An example of measurement means the use of a ruler to determine the length of a piece of paper. An example of measurement is 15" by 25".
Answer:
This is the act of measuring something or the act of taking the length, weight or height of something,e.t.c.
Explanation:
How do animals get rid of excessive nitrogen?
Answer:
Animals get rid of nitrogen by converting it int urea uric, acid and ammonia.
Explanation:
Answer:
adding c02
Explanation:
A plant has two alleles for color. The red allele is recessive, and is represented by q. The purple allele is dominant, and is represented by p. If 59 of 100 organisms are red, what is q? P^2 2pq q^2=1
Answer:
q is 0.7681
Explanation:
The red allele is recessive, and is represented by q.
If 59 of 100 organisms are red meaning the frequency of the recessive genotype of red is 59/100 = 0.59 represented by q².
Thus q would be to find the square root of q². Where q is the frequency of the recessive allele in the population
Thus, q = √q² where q² = 0.59
q = √0.59
q = 0.7681
Whate is a cell
plz answer fast
Answer:
A cell is the smallest unit of a living organism
Explanation:
Just as an atom is described as the smallest unit if any substance, a cell is defined as the smallest, basic unit of any living organism.
This means that in order for something to be considered an organism, it has to contain, at least, a cell. Such organism with a single cell is referred to as a unicellular organism.
There are several organisms with more than one cell. Such organisms are said to be multicellular. Multicellular organisms often have their cells organized into tissues, organs, and or systems in order to function efficiently and maximally.
Cells can be of different types based on their level of complexity. The simple cells that do not have nucleus nor membrane-bound organelles are referred to as prokaryotic cells while the ones with complex structures with a nucleus and membrane-bound organelles are known as eukaryotic cells.
Which process is characterized by the movement of particles from an area of high concentration to an area of low concentration across the plasma membrane without the use of energy? hypertonic transport active transport passive transport dynamic equilibrium
Answer:
Passive transport
Explanation:
Diffusion is a passive mechanism of transport. Until the concentration is the same throughout the space, a single substance has a tendency to travel from an area of high concentration to an area of low concentration. You are aware of how compounds diffuse through the air.
What are the passive transport dynamic equilibrium?Chemicals move passively from a location of higher concentration to a region of lower concentration through a process called diffusion.
We discussed three passive transport techniques: osmosis, assisted diffusion, and diffusion, all of which are crucial for cellular operations. Although the precise mechanics powering each of these transportation strategies vary, they are all non-energetic.
Therefore, Passive transport is a phenomenon that happens naturally and doesn't require the cell to use energy to move.
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What is thought to bring different organisms such as fish and dolphins to have evolved a similar body plan?
Answer:
their very similar environments.
Explanation:
The type of evolution that is referenced here actually has a name -- convergent evolution. It's when two types of organisms/species have nothing in common ancestor-wise but still evolve similarly due to their similar environments. The similar body plan the question is referencing could include fins and other "fish features" as well. :-)
A carbon atom can bond with other atoms in a variety of ways. Which set of bonds would a typical carbon atom form in a compound? three double bonds and a single bond two double bonds and two single bonds a triple bond and a single bond a double bond and a triple bond.
Answer: a triple bond and a single bond
Explanation:
The set of bonds would a typical carbon atom forms in a compound are a triple bond and a single bond.
What do you mean by Atom?An atom may be defined as a particle of matter that uniquely defines a chemical element.
A carbon atom is the only atom that forms a bond with other atoms in a variety of ways. Such carbon atoms are stable at single bonds, double bonds, and triple bonds. But it typically forms only a single and triple bonds.
Therefore, The set of bonds would a typical carbon atom forms in a compound are a triple bond and a single bond.
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what are the two main a biotic factor that affect organisms in a marine ecosystem
Answer:
one of these a or b i know that much
Explanation:
my bad
Answer:the answer will be ----------- B oxygen level and water temperature
Explanation:
njsdnjcnjncds just know ;)
Select the correct answer.
Which statement forms part of cell theory?
OA.
Cell organelles are capable of reproducing themselves.
B.
Cells differ in shape, but they have identical components.
O c.
All cells begin life as prokaryotic cells.
D.
All living things are made up of cells.
Reset
Answer:
Cell organelles are capable of reproducing themselves.
Explanation:
The other two options are not correct, because there are prokarotic and eukaryotic cells. They are made of different organelles but nonetheless are both cells. Furthermore, prokaryotic cells can only reproduce and create other prokaryotic cells.
The radius of the Crab Nebula is approximately 5.225 × 1013 kilometers. Use the conversion factor 1 light-year = 9.5 × 1012 kilometers to find the radius in light-years.
Answer:
Using the above conversion
9.5 x 10 ^12kilometers = 1 light year
Therefore 5.225 x 10^13 will be
5.225 x 10^13/ 9.5 × 10^12 × 1 light year
= 5.5 light years
The radius of the Crab Nebula is
5.5 light years.
Hope this helps
Answer:
Plato says 5.5 ly
A man with free earlobes and the ability to taste PTC marries a woman with free earlobes and no ability to taste PTC. They have four children. All of the children are tasters of PTC. Only one has attached earlobes. What are the genotypes of the parents?
Answer:
Father's genotype is T T, E e
Mother's genotype is t t, E e
Explanation:
Tasting PTC
Let the characters for tasting and not tasting PTC be T and t respectively.
Since all the children can taste PTC, it can be deduced that tasting PTC is a dominant trait.
The man will be homo-zygous dominant for tasting PTC while the woman is homo-zygous recessive for tasting PTC.
Genotype of man is T T and genotype of woman is t t
T T x t t = T t, , T t, T t; which is a 4:0 phenotype.
Earlobes:
Let the characters for Free and attached earlobes be E and e
Since both the man and woman have free earlobes and 3 out of 4 children have free earlobes, it can be deduced that free earlobes is dominant while attached earlobes is recessive.
The ratio of free to attached earlobes is 3:1
The man and the woman are both hetero-zygous dominant, E e for free earlobes, so that a cross between them will yield three hetero-zygous dominant for free earlobes and one homo-zygous recessive for attached earlobes.
E e x E e = E E, E e, E e, e e; which is a 3 : 1 phenotype.
If there is a high death rate and large amount of _______,
populations will likely decrease
Answer:
emigration
Explanation:
Which two planets have 53 moons? 1)Earth and Mercury 2)Jupiter and Saturn 3)Mercury and Mars 4) Neptune and Jupiter
Answer:
Jupiter and Saturn
Explanation:
Answer:
Saturn and Jupiter
Explanation:
Saturn has 82 moons, but 53 officially named
Jupiter has 79 moons, but 53 officially names.
Other than this, no other have exactly 53 in any way.
Hope this helps
Four groups of scientists, in different parts of the world, are dating fossils found in a rock layer of the same geologic time period. To validate the age of their fossils, the results of their tests would need to be
Answer:
The options are
Complex
Identical
Inconsistent
Non-testable
The Answer is Identical
Explanation:
The groups of scientists in different parts of the world who are dating fossils found in a rock layer of the same geologic time period. The findings have to have some common characteristics which links it to being in the same geologic time period.
This however validates the fossils having to be identical to match those found in other parts of the world.
Answer:
identical
Explanation:
I will give the brainiest
The brain sends messages
to the muscles through the
A)motor nerves.
B)eyes.
C)blood vessels.
Which of the following statements shows an example of operant conditioning?
Answer:
I think it's - A chicken learns that if it pecks on a button, a food pellet will be released into its cage.
The statement "A chicken learns that if it pecks on a button, a food pellet will be released into its cage" shows operant conditioning. So, option A is correct.
Operant conditioning, often known as instrumental conditioning, is a teaching strategy that use rewards and penalties to different behavior. Through operant training, actions that are rewarded are more likely to be repeated than actions that are penalised.
Pavlov's experiment with the dog is an example of classical conditioning, In classical conditioning, the stimulus that is repeatedly combined with the unconditioned stimulus until it finally elicits the same response is known as the conditioned stimulus.
Learning a skill by watching someone else perform it is an example of observational learning. Learning through observation of other people's behaviors is observational learning.
Therefore, option A is correct.
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The complete question is,
Which of the following statements shows an example of operant conditioning?
A.) A chicken learns that if it pecks on a button, a food pellet will be released into its cage.
B.) Pavlov taught a dog to salivate every time it heard a bell.
C.) When you grow up, you are able to perform a skill that you watched your parents perform.