Answer:
In 1884, Hans Christian Gram described a method of staining bacterial cells while not staining surrounding animal tissues. However, he thought that the staining method he developed was faulty because not all bacteria stained. ... Not all bacteria stained because some have walls that prevents the staining.
how do plants use carbon dioxide
Explanation:
Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.
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Match the causes with their effects.
Answer:
"destroys->deforestation"
"Oil spills->harms aquatic"
"injecting->pollutes"
1. deforestation
2. injecting fracking fluids into the ground
3. oil spills during transport on a ship
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Which of the following describes a scenario that could increase the winds of the jet stream?
O Faster global convection currents
O Decreasing radiation from the sun
O Equal heating of the Earth's surface
O Stopping conduction from the ground
Answer:
faster global convection currents!
Fortunately I just took this quiz and received 100%!
The statement that explains scenerio that can bring an increase to winds of the jet stream is A: Faster global convection currents.
Jet streams can be regarded as a fast flowing as well as narrow and meandering, air currents which is found on Earth and other planet. It is a bands of strong wind which moves to east from west in the globe.The wind of jet stream do increase by the action of wind current, because convection current do aid the movement of this this wind from a place to the otherTherefore, option A is correct.
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2. From the knowledge of nutrition:-
a) What five conditions are necessary for photosynthesis to occur
Answer:
Carbon dioxide
sunlight
oxygen
chlorophyll
water
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Select the three areas of the human body that are covered by mucous membranes that act as barriers to infection from foreign pathogens. Multiple select question. heart and endocardium genitourinary tract brain and spinal cord gastrointestinal tract liver and gall bladder respiratory tract
Answer:
gastrointestinal tract
genitourinary tract
respiratory tract
Explanation:
Adaptation:
Question 6
A type of large mammal living in herds develops many adaptations over a period of time. These include ability to drink a lot of water and go without water for long periods of time and fur on the top of their body.
What can we say about the living conditions of these mammals?
Select one:
They live in a sunny environment where water is scarce.
They are grass eaters who must travel long distances to find food.
They are hunters that rely on group tactics to get their prey.
They live in a cold environment with lots of trees but little grass.
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According to the food pyramid what contains large amounts for the making of cell membranes
Fatty acids
Explanation:
Essential fatty acids need to be consumed through the diet and are important building blocks of cell membranes.
As carnes lombinas e animais de bom porte alimenticio e apropiados para "consumo"(no caso , que pode ser ingerido).
what is photosynthesis??????????????
Answer:
it is process of converting the sunlihght inyo the food for plants snd prepare glucose and oxygen with the hp of chlorophyll
your answer is in the attachment
well,
photosynthesis is a process by which green plants prepare their own food with the help of air water and sunlight.
:DArrange these structures in order of lower level of organization to upper level and write the level against each structure. neuron , nervous system , electron , man , mass of neuron , carbon , mitochondria , brain , protein
Answer:
electron, carbon, protein, mitochondria, neurons, mass of neuron, nervous system, brain, man
Explain how a person can be a carrier for a sex-linked disorder, but not exhibit this disorder.
A person cannot exhibit the disorder because they don't experience the condition because they have a healthy copy of the gene on their other sex chromosome.
A disorder is a functional abnormality or disturbance that affects an individual's physical, mental, or emotional health.
They have the potential to pass on the mutated gene to their offspring, but they do not exhibit the disorder themselves because they have a normal copy of the gene on their other sex chromosome.
In the case of X-linked disorders, females have two X chromosomes, while males have one X chromosome and one Y chromosome. Females can be carriers for X-linked disorders if they inherit one mutated X chromosome from one parent, and one normal X chromosome from the other parent.
Males, on the other hand, cannot be carriers of X-linked disorders because they only have one X chromosome.
Therefore, a person can be a carrier for a sex-linked disorder if they have one copy of a mutated gene on one of their sex chromosomes, but not on both.
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suggest TWO reasons why fewer birds and other small animals can survive in the areas left after trees have been cut down
Answer:
One is that they migrate to more fertile places.
Second, some animals may die because they can't stand the conditions of treelessness. But some animals can survive. because of adaptation
Explanation:
Removal of trees and other types of vegetation can reduce the availability of food, shelter and breeding habitat
What is Deforestation?Deforestation also known as forest clearance is defined as the removal of forest or stands of trees from land that is converted to non-forest use in which forest land is converted into farms, ranches or urban may involve converting to use. The most concentrated deforestation occurs in tropical rainforests.
It occurs when humans remove or thin forests for timber or use land where trees stand for crops, grazing, extraction such as mining, oil, or gas, or as populations grow and people move. Development takes place in the form of migration.
Wildlife habitats are fragmented due to deforestation, where native species have to live on remaining habitat islands that are surrounded by disturbed land being used for agriculture and other uses.
Thus, removal of trees and other types of vegetation can reduce the availability of food, shelter and breeding habitat
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Why is water important in humans life explain
please explain gyz
Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma? a recessive trait that requires multiple recessive alleles to be expressed a polygenic trait that is influenced by the alleles of several genes a codominant trait that is expressed more often when more dominant alleles are present a dominant trait that depends on the presence of only one of many dominant alleles
Answer:
Question
Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma?
Answer
(A) - a recessive trait that requires multiple recessive alleles to be expressed
Explanation:
Glaucoma is a polygenic trait influenced by the alleles of several genes.
Polygenic phenotypic traits are those influenced by many genes, which interact to shape the phenotype. Polygenic traits exhibit a bell-shaped distribution in a population (i.e. they have a continuous distribution). Some examples of polygenic traits include, among others, height, body shape, skin color, weight, etc.A polygenic trait that is also affected by environmental factors is known as a multifactorial trait.In conclusion, glaucoma is a polygenic trait that is influenced by the alleles of several genes.
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The___ cycle is not a nutrient cycle
Answer:
use
Explanation:
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explain the importance of reproduction in organisms
Answer:
Reproduction is an important characteristic feature of living organisms. It is an essential life process which not only helps in survival but also helps in continuity of that race and group immortality, as by reproduction. Reproduction also helps in increasing the population of the species.
Answer:
Explanation
The biological process in which living organism produce their own kind by asexual and sexual method is called reproduction.
Importance of reproduction
Reproduction helps to continue life on earth.Reproduction helps individuals to continue the species and genus.Reproduction is the source of food in an ecosystem.Learn more:
Is reproduction important to the survival of an individual? Why would you say that living things reproduce if some individual living things may not reproduce?
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Mention two similarities between haemolysis and plasmolysis
Answer:
Explanation:
they both in invole the desturction of the cell
1. What academic subset of oceanography studies seafloor features and the processes that form them?
O A. Biological oceanography
O B. Marine geology
O C. Physical oceanography
O D. Chemical oceanography
what is the defination of matter?
Answer:
matter is a kind of substance
Answer:
any thing that has a mass and occupies space is called matter
Explanation:
for example
a book is a matter because it has a mass and it also occupies some space
Which of the following describes a positron emission tomography (PET) scanner? 1: A device that uses magnetic fields to produce images of brain structures 2: A device that uses magnetic fields to measure blood flow 3: A device that uses radioactive fluid to determine the active areas of the brain 4: An X-ray device that can create a 3D model of the brain
Answer:
3: A device that uses radioactive fluid to determine the active areas of the brain
Explanation:
A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.
Depending on the type of exam, the radiotracer is injected, swallowed or inhaled as a gas. It eventually accumulates in the area of the body under examination. A special camera or imaging device detects radioactive emissions from the radiotracer. The camera or device produces pictures and provides molecular information.
2.1explain the body's hormonal response to dehydration
Answer:
Vasopressin, a hormon is secreted by pituitary gland which is response to dehydration , causes kidney to excrete less water.
The body's hormonal response to the dehydration is the action of vasopressin in the kidney. The vasopressin decrease the work of the kidney and it leads to decrease the amount of water secreted by the kidney to save water in the body.
What is dehydration?Dehydration is a condition where there is less water present in the body. There are many reasons of dehydration, like drinking less water or diarrhea. All reactions of the body work by water. So loss of water severely affect the body.
The hormonal response to dehydration is the release of vasopressin by the pituitary gland of the body. The vasopressin saves water from the body to help body fighting with dehydration. It makes the kidney to filter less water.
Thus, the activation of vasopressin in the kidney causes the body's hormonal reaction to dehydration. Vasopressin lessens the kidney's workload, which causes a reduction in the amount of water the kidney secretes to conserve the body's water supply.
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Which of the following is an example of uniform dispersal?
(A) one large buffalo herd
(B) random elephant groups
(C) school of silverside fish
(D) territorial jaguar pairs
Answer:
The correct answer is D. territorial jaguar pairs
What is meant by the term drug delivery?
Answer:
Drug Delivery
Explanation:
Drug delivery is the method or process of administering a pharmaceutical compound to achieve a therapeutic effect in humans or animals. For the treatment of human diseases, nasal and pulmonary routes of drug delivery are gaining increasing importance
can DNA be extracted from dead cells
describe physical environment
Answer:
The physical environment is where individuals live, learn, work, and play. People interact with their physical environment through the air they breathe, water they drink, houses they live in, and the transportation they access to travel to work and school. ... Clean air and safe water are necessary for good health.
Biological method involves all the following except
(a) data collection (b) observation (c) proportion (d) experiment
word equation for photosynthess
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2.
Explanation:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
Durante la explosión de una planta nuclear como la ocurrida en Chernóbyl en 1986, una persona se expone por un tiempo a esta radiación ¿qué daños a nivel molecular (ADN O ARN) podría sufrir? Y ¿cómo afectaría esto su salud y a la de su descendencia?
Answer:
mediante mutaciones en el ADN
Explanation:
El desastre ecológico de Chernóbil estuvo asociado a la liberación de importantes cantidades de radiación en forma de radioisótopos hacia la atmósfera, como producto de la explosión de un reactor que contenía toneladas de uranio radiactivo. La exposición a este tipo de radiación aumenta las probabilidades de sufrir mutaciones en la molécula de ADN. Dicho de otro modo, la radiación incrementa las chances de sufrir cambios en el material genético hereditario. Las mutaciones generalmente son corregidas por los mecanismos de reparación del ADN; sin embargo, existen ocasiones donde las mutaciones no son reparadas. Por otro lado, las mutaciones a menudo tienen efectos deletéreos y por lo tanto están asociadas a enfermedades, ya que los cambios en la secuencia genética provocan consecuentemente también cambios en las proteínas codificadas por estos genes. Por ejemplo, las mutaciones sufridas por genes supresores de tumores se encuentran asociadas a la aparición de células cancerosas por el mal funcionamiento de dichos genes. El efecto de la mutación depende del tipo celular que sufre la mutación: aunque las mutaciones sufridas por células somáticas pueden afectar la salud, estos tipos de mutaciones no son heredadas (simplemente porque las células somáticas no se heredan), mientras que las mutaciones sufridas por células germinales, es decir, en las células encargadas de la formación de gametos, pueden ser transmitidas a la descendencia.
Describe the functions of the three main regions of the brain
Answer:
The three main functions of brain are cerebrum , cerebellum , brainstem
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What is an allele that isn't expressed called?
Dominant allele
Recessive allele
Genotype
Phenotype
The final phase of translation, called termination, is signaled by three nucleotides, called a __________, that mark the end of a polypeptide chain.
Plasmid
Exon
Intron
Stop codon
Why do turtles hv paddle like flippers ?
Answer:
The answer is
Explanation:
Turtles have paddle like flippers to push back water while swimming.
Answer:
Turtles hv paddle like flippers so that they can push the water backward, move forward and swim easily