Answer:
The living species comprise more number of hydrogen atoms in comparison to any other atoms, still 65 percent of the usual organism's mass is oxygen. The prime reason for this is that an atom of oxygen comprises sixteen times more mass in comparison to a hydrogen atom.please mark me as the brainliest thnx
Answer:25;
Explanation:
which of the following is a energy consuming process a. excretion b. anabolism c. both a and b d. catabolism
Answer:
Anabolism
Explanation:
Excretion exerts energy
Catabolism releases energy
Anabolism requires energy
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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Success in sport competition such as a 220-yd sprint run requires a highly trained:
a. aerobic energy system
b lactic acid energy system
c. ATP-CP energy system
d. b and c
Answer:
The correct option is lactic acid energy system
Explanation:
The option chosen as the correction is "b lactic acid energy system" since in sprint races the distance is short, or relatively short as in this case they are two and a half blocks or 220mts, in these short distances the contraction Muscle is of high potential, activates the red muscle fibers that are the tools that specialize in explosive contraction with few demands on oxygen, a difference from the white ones that are the opposite (these work at a medium concentration of oxygen and low contractions sustained power over time).
Red muscle fibers contract very powerfully and with few oxygen requirements, but this implies a higher production of lactic acid for the athlete, because this acid is the product of anaerobic contraction.
Muscle contraction with few partial pulsations of oxygen generates accumulated sorts between the muscle fibers of lactic acid, and is the well-known post-exercise pain of athletes.
Athletes who train for sprint challenges also consume glucose rapidly consumed to improve the effectiveness and power of contraction.
Furthermore, the oxygen requirements are few because, as it is a high potency and short duration activity, it does not give the body time to supply the partial oxygen pressures that are completely needed.
Most people in cities get their water _______. a. by supplying it themselves b. by delivery through pipes c. through private suppliers d. all of the above
Answer:
answer is b
Explanation:
water normally passes through pipes
Explanation:
By delivery through pipes
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.
How does a worker bee develop a queen out of the larva stage?
Answer:
New virgin queens develop in enlarged cells through differential feeding of royal jelly by workers. When the existing queen ages or dies or the colony becomes very large, a new queen is raised by the worker bees. When the hive is too large, the old queen will take half the colony with her in a swarm.
Explanation:
explain the importance of to the field of genetics
Answer:
n
Explanation:
nn
If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction
The rate would increase.
The rate would decrease.
The rate would remain the same.
The rate would be zero.
Answer:increase
Explanation:
Answer:
The rate would increase
Explanation:
in a paper on photosynthesis in a desert cactus in which selection would you find a review of existing knowledge that is relevant to the experiment
Answer:
The Introduction
Explanation:
In writing a scientific paper, there are different segments with the relevant information they are to contain. These sections include the abstract, introduction, the main chapters, the results, the discussion, conclusion, and references. The Introduction segment contains relevant background information on the topic of interest. There we find a review of existing knowledge that applies to the experiment. These include past research work and citations of authors.
A statement could also be made relating the purpose of the experiment and methods used in carrying out the research. So, the paper on photosynthesis in a desert cactus would contain a review of existing knowledge in the introduction segment.
Answer:
Introduction
Explanation:
Explain why algae swim up from the bottom of a pond during an afternoon
Explanation:
What happens during daytime is, oxygen that gets trapped between filaments of algae, moves them to the surface and during night as O2 is not produced, they slowly sink to lower depths, and you don't see them
During the afternoon, algae will rise from the bottom of the pond in response to variations in light availability and intensity.
What is an Algae?Algae are a class of photosynthetic organisms found in a variety of aquatic habitats such as oceans, lakes, ponds, and rivers. Algae use photosynthesis to convert carbon dioxide and water into glucose and oxygen, a process that all photosynthetic organisms must have access to in order to function.
Algae live closer to the surface of the water where they can access more light in the morning as sunlight is generally less intense and more diffuse. When the sun rises and the light intensity increases, the algae move deeper into the water column to avoid exposure to the sun's rays.
Therefore, during the afternoon, algae will rise from the bottom of the pond in response to variations in light availability and intensity.
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this might seam like a weaird qusten my teacher ask what is sex in the same people
Answer:Either homosexuailty or Male and Female?
Explanation:
Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3:1. If the allele are designated (R & r) respectively, what is the probable Phenotype of the parents?
Answer:
The parents are probably both phenotypically round-seeded with genotypes (Rr) each.
Explanation:
According to the question, a monohybrid cross involving a single gene coding for seed shape in pea plants is the case here. The allele for round seeds is R while allele for wrinkled seeds is r. The "R" allele is dominant over the "r" allele i.e. the phenotypic expression of r will be masked by R in a heterozygous state.
In order to get a ratio 3:1 of round seeds to wrinkled seeds offsprings, the parents will probably both have an Rr genotype, which is phenotypically round-seeded considering that round seeds (R) is dominant over wrinked seeds (r).
As seen in the punnet square attached as an image, four possible offsprings will be produced from a cross between parents Rr × Rr. The possible offsprings will have genotypes: RR, Rr, Rr, and rr.
RR, Rr, Rr are phenotypically round-seeded (3)
rr is phenotypically wrinkled-seeded (1).
Hence, the ratio 3 round seeds : 1 wrinkled seeds will be probably produced by parents with round seeds (Rr).
State any five characteristics of bacteria
Answer:
ningún núcleo, primera célula en la tierra, ADN lineal, tiene ribosomas, tiene una membrana.
Explanation:
Answer: Single cell, Absent Organelles, Plasma Membrane, Cell Wall, DNA
Explanation:
Single-Celled
Perhaps the most straightforward characteristic of bacteria is their existence as single-celled organisms. While most bacteria, archaeans and eubacteria alike, spend their entire microscopic life cycle as independent single cells, some such as the soil-dwelling myxobacteria will form multicellular fruiting bodies as part of their life cycle.
Absent Organelles
Eukaryotic cells, such as those of plants, animals and fungi, possess a membrane-bound nucleus that compartmentalizes the cell's DNA from the rest of the cell. Other functions within these cells are also sequestered into specialized membrane-bound organelles, such as mitochondria for cellular respiration and chloroplasts for photosynthesis. Bacteria lack a nucleus and complex organelles within their cells. This is not to say that bacteria do not possess internal organization, as their DNA is often sequestered into a region of the bacterial cell known as the nucleoid. However, it is important to note that the nucleoid is not physically separated from the rest of the cell by a membrane.
Plasma Membrane
While plasma membranes are common throughout other living cells, these membranes are not a feature of bacteria. The absence of internal organelles relegates many functions that occur within eukaryotic cells to occur on the plasma membrane of bacteria. For example, special infoldings of the plasma membrane allow photosynthetic bacteria to perform the light-dependent reactions of photosynthesis that photosynthetic eukaryotes conduct on the thykaloid membranes within the chloroplast.
Cell Walls
A peptidoglycan cell wall is a common feature among eubacteria. This cell wall envelops the bacteria cell, providing strength and preventing rupture in changing environments. One of the fundamental tests performed in identifying bacteria is the Gram stain, which categorizes eubacteria as Gram positive or Gram negative based on the ability of the cell wall to retain crystal violet dye. The cell wall is the target of the antibiotic penicillin and its derivatives. Penicillin inhibits cell wall formation and can destroy the walls, especially in rapidly growing and multiplying bacteria. Again underscoring the diversity within this group, not all eubacteria possess a peptidoglycan cell wall. The cell wall of chlamydia lacks peptidoglycan. Mycoplasma lack any cell wall. Archaeans also possess a cell wall but use substances other than peptidoglycan.
DNA
The multiple, linear chromosomes often represented graphically in biology textbooks are specific to eukaryotes. Conversely, both archaeans and eubacteria possess a single-circular chromosome and a DNA sequence much shorter than that found in eukaryotes. The shorter DNA sequence may partially be explained by the comparatively reduced complexity of bacterial cells but also results from the reduced presence of introns -- segments of a gene that are removed during translation of the DNA into protein. The bacterial genome is augmented by smaller fragments of DNA known as plasmids, though these are not unique to bacteria and are also be found in eukaryotes. Plasmids are replicated within the bacterial cell independent of the bacterial chromosome and may be exchanged between different bacterial organisms. Plasmids may impart attributes to the host cell such as antibiotic resistance.
what kind of feeling feel human body during sex?
Answer:
During sex, various things take place in the body, which makes the feeling of sex good. An array of emotional and physical phases takes place in the body that one encounters at the time of having sex. The four prime phases of the sexual arousal are excitement, plateau, orgasm, and resolution.
At the time of having sex, the following things take place in the body of a male partner and female partner:
1. The intensity of heart rate, blood pressure, and breathing increases, and both men and women take oxygen at a brisk rate.
2. Involuntary muscle contractions take place and muscle spasms occur generally in the feet.
3. A robust and instantaneous release of sexual tension takes place.
4. Rhythmic contractions of the muscles at the penis base takes place, and in female rhythmic contractions takes place within the uterus.
Gene therapy is an integral part of genome projects. It includes the correction of abnormal genes responsible for diseases. Which of these is an application of gene therapy?
Answer:
C. The introduction of a new gene that can bind with the abnormal gene to inhibit its action.
Explanation:
Gene therapy is a new system of treatment being introduced that employs the use of genes as against drugs in the treatment of diseases. Most diseases arise as a result of a mutation in a gene. Gene therapy seeks to replace these mutated genes with healthy genes. The bad gene could also be inactivated or knocked out to prevent further damage.
So, when a new gene is introduced and made to bind with an abnormal gene to inhibit its action, that is a knockout process employed in gene therapy. The practice is still under trial.
What describes a group of organisms that are considered a species
Answer:
Biological species
species is the smallest unit of classification
Staphylococcus aureus is a bacterium that causes a variety of human ailments including boils, sties, and infections. While this bacterium is commonly found on the skin, mouth and nose, it does not usually cause harm unless it enters the body through an open wound.
Answer:
True.
Explanation:
Staphylococcus aureus is a bacteria that can be in the skin, nose, mouth, under the armpits, or on skin folds, but that is harmless unless that it enters the body through a cut or open wound. Once inside the body, the bacteria can cause different types of infections. These infections can be small ones or big ones such as pneumonia, meningitis, or endocarditis. The bacteria spread from one person to another by skin to skin contact or by being in touch with contaminated surfaces. That is why we should avoid touching dirty places, and we should wash our hands periodically.
Identify the products of cellular respiration and photosynthesis
Answer:
Photosynthesis- glucose and oxygen
Cellular respiration- carbon dioxide and water (and ATP).
Explanation:
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boa constrictor
beetle conti
poison dart frog
sloth strangler fig-
fungus fruit bat
What will most likely happen if the population of poison dart frogs drops due
to a virus?
A. There will be more beetles available for other organisms,
B. The sloths will start eating more figs.
C. The boa constrictors will need to eat more sloths.
D. The fruit bat population will increase suddenly.
Which type of mutation causes this translation error that leads to cystic fibrosis? silent missense nonsense deletion
Answer:
The type of mutation that causes this translation error is called deletion. Deletion occurs when a section of a DNA is deleted or lost. In cystic fibrosis, three nucleotides are deleted that results in the lost of phenylalanine.
Explanation:
The mutation is the change in the original nucleotide sequence that can lead to cystic fibrosis. A nonsense mutation occurs in the CFTR gene that terminates the gene sequence early. Thus, option C is correct.
What is a nonsense mutation?A nonsense mutation is a type of mutation in which the nucleotide producing the proteins are terminated early than anticipated. This cause a translational error in the case of cystic fibrosis disorder.
CFTR produces proteins that maintain the translational processes. A stop codon gets inserted in the nonsense mutation between the sequence that leads to abrupt termination of the protein sequence leading to disorder.
Therefore, the nonsense mutation causes the termination error in Cystic fibrosis.
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The complete question is attached to the image below.
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:
Can someone explain the 4th dimension to me the best you can?
Organisms contain different levels of organization within their bodies. Arachnoidiscus ehrenbergi, pictured below, is a single-celled organism that is part of the group of algae known as diatoms. A microscopic image of Arachnoidiscus ehrenbergi. Photo by Gordon T. Taylor, courtesy of the NOAA Which level of organization is seen in both Arachnoidiscus ehrenbergi and the human stomach? cell tissue organ organ system Mark this and return
The correct answer is the cell.
Since Arachnoidiscus ehrenbergi is a single cell organism the only level its of organization is cell. Human stomach is composed of many different types of cells which combine together in order to perform complex functions. Those cells are arranged in tissues which make an organ-stomach.
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The level of organization displayed by both Arachnoidiscus ehrenbergi and the human stomach would be the cell.
Since it has already been established that Arachnoidiscus ehrenbergi is a single-celled organism, it can only exhibit a cellular level of organization.
The human stomach, in a similar vein, is made up of different cells. One group of such cells are secretory epithelial cells. They include the mucous cells, parietal cells, chief cells, and so on.
Thus, Arachnoidiscus ehrenbergi and the human stomach have the capacity to exhibit a cellular level of organization.
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Which statement best describes how deep-sea producers differ from other producers?
A. Deep-sea producers must generate twice as much energy due to larger consumers nearby
B. Deep-sea producers must absorb twice as much energy due to higher productivity rates in the area,
C. Deep-sea producers have adapted mechanisms to conduct photosynthesis with less visible light.
D. Deep-sea producers have adapted to conduct respiration instead of photosynthesis due to lack of light
Answer:
C. Deep-sea producers have adapted mechanisms to conduct photosynthesis with less visible light.
Explanation:
Since they are deep in the sea, they have adaptive mechanisms to conduct photosynthesis with less visible light.
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What are non-phathogenic bacteria
The brothers pictured below are identical twins. The boys in this picture look alike because their bodies contain identical carbohydrates. lipids. nucleic acids. proteins.
Answer:
nucleic acids.
Explanation:
The fusion of the sperm with the egg results in the formation of a zygote that develops into a new offspring. Twins refers to the two offspring which are a result of the same pregnancy. They are of two types. Monozygotic twins are a result of the single zygote (formed by the fusion of one egg with a single sperm) spiltting into two embryos forming the identical twins. Dizygotic twins are a result of two eggs fertilized with two different sperms forming the fraternal twins.
Identical twins are genetically simliar. The genetic material is derived from the same embryo and thus, the DNA of the identical twins are nearly identical. The spilitting of the embryo formed results in the separation of the same genetic material or identical DNA getting incorporated into the twins making them look alike in majority of the cases.
Answer:
C. nucleic acids
Explanation:
Explain how carbon dioxide moves from one organism to another
Answer:
carbon dioxide is moves from humans by bringing out oxygen from the anus. When the oxygen is out the humans it is called carbon dioxide, so the plants take in the carbon dioxide for their surviving
When compared to a cheek cell, a muscle cell contains more? A) Vacuoles B) Ribosomes C) Mitochondria D) Chromosomes
Answer:
chromosomes
Explanation:
Which phrase describes one characteristic of radioactive elements
Answer: d is the correct answer
Explanation:
Mutation occurs when___.
A) any organism varies from its parents
B) any organism acquires a trait during its lifetime
C) a gene is "shuffled" during normal sexual reproduction
D) a gene is not copied perfectly during the process of reproduction
Answer: B
Explanation:
