The currently accepted model of the cell membrane was discovered by ________ in the year ______

A) Charles Overton, 1895
B) singer and Nicolson, 1972
C) Davison and Danielli, 1970
D) Irving Langmuir, 1917

Answer:

what is your question 1 ,2 ya 3 wha

Answer:

B. Ethanol

Explanation:

During absence of O2 pyruvic acid is reduced to ethanol in alcoholic fermentation.

Answer:

its is converted into co andoption .C Ethanol

Answer:

Explanation:

Biology is the SCIENTIFIC study of life. It is a natural Science with a broad scope such as anatomy, physiology , morphology e.t.c.

Answer:

B

Explanation:

Answer:

Double fertilization

Explanation:

The phenomenon of double fertilization is unique to flowering plants (i.e., angiosperms). Each pollen grain produces two male gametes (sperm cells), one of which fertilizes the egg to form the zygote, whereas the other sperm fuses with polar nuclei in the female gametophyte in order to form a triploid cell (3n) called endosperm. Subsequently, this endosperm will support embryonic growth by supplying storage nutrients and by serving as a mechanical barrier during seed development and germination.

Explanation:

Crossing over is a type of recombination that occurs during prophase I of meiosis and results in the exchange of genetic material between homologous chromosomes. In a population where crossing over occurs frequently, there would be increased gene pool or genetic drift and variations compared to a population where individual chromosomes do not cross over. The offspring will be genetically unique because of crossing over and independent assortment.

Answer:

I don't know it can I search it in my laptop and tell you the answer

Answer:

virus spreads mainly between people who are in close contact with each other, typically within 1 metre. A person can be infected when aerosols or droplets containing the virus are inhaled or come directly into contact with the eyes, nose, or mouth.

Explanation:

This is the correct answer I hope this helps you out a little.

Answer:

átomo es la unidad constituyente más pequeña de la materia que tiene propiedades de un elemento químico.[1] Cada sólido, líquido, gas y plasma se compone de átomos neutros o ionizados. Los átomos son microscópicos; los tamaños típicos son alrededor de 100 pm (diez mil millonésima parte de un metro).[2] No obstante, los átomos no tienen límites bien definidos y hay diferentes formas de definir su tamaño que dan valores diferentes pero cercanos. Los átomos son lo suficientemente pequeños para que la física clásica dé resultados notablemente incorrectos. A través del desarrollo de la física, los modelos atómicos han incorporado principios cuánticos para explicar y predecir mejor su comportamiento

Explanation:

El átomo contiene protones, neutrones y electrones, con la excepción del átomo de hidrógeno-1, que no contiene neutrones, y del catión hidrógeno o hidrón, que no contiene electrones. Los protones y neutrones del átomo se denominan nucleones, por formar parte del núcleo atómico.

Answer:

at this situation we need to take care of ourselves

because we know that it's disease which leads us to death

The correct answer is B. S-curve

Explanation

There are two models of population growth. One of them is the J-curve in which the population grows constantly without stabilizing, forming a J-shaped graph. Second, the S-curve is a model in which the population grows to a point, and from there it stabilizes, forming an S-shaped graph. According to the above, bacteria that divide rapidly until they run out of space and their growth slows down stabilizing the size of their population has an S curve model because the population does not grow unlimitedly but stabilized under specific circumstances. So, the correct answer is B. S-curve

Answer:

photosynthesis is the process by which carbon dioxide and water are converted into glucose in the presence of sunlight.

I hope this helps

Answer:

non-random mating

Explanation:

In animals, most cases of non-random matings are related to behavior. There are three main possible ways of non-random mating:

Sexual selection

In many bird and mammal species, and even in some fish species, one of the sexes selects the other one to mate. In general, the one that chooses is the female.  

Intrasexual competition between males to get access to females plays a significant role in sexual selection. Males can develop weapons that make them greater fighters.

There is also intersexual selection, in which members of each sex apply selective pressures on the other sex, modeling their phenotype by choosing partners.

As notorious structures and behavior make males be more vulnerable to predation, sexual selection seems to operate against other types of natural selection, as it might affect males´ survival.

However, there seems to be a compensation between sexual selection and natural selection.

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In the exposed example, the construction of elaborated and noticeable structures is done to attract females. If females are impressed with a bower, she will choose the male that built it to mate. The better the nest is, the better the male genetic quality. So the female chooses this male because his genetic charge is significant and reflects a higher fitness for their progeny.

Answer:

nourish the placenta

Explanation:

The hormone called human placental lactogen (hPL) is a hormone secreted by the placenta, which functions to supply nutrients and oxygen to the growing fetus in the womb.

The human placental lactogen is produced to help in the efficient use of ingested food substances in the production of energy (metabolism). This indirectly helps to nourish the placenta because if the mother efficiently converts food into nutrients, the placenta is also adequately nourished.

Answer:

The rate at which an object's velocity changes with respect to time is called acceleration. Accelerations are measured in terms of vectors. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.

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No

Because most people go for what tastes good rather than what is protein rich, and what tastes good is usually high in fat and carbohydrates, as opposed to proteins.

Answer:

parasympathetic.

Explanation:

This neuron in the question is a parasympathetic type of neuron that releases the acetylcholine onto the target cell. It is the part of the nerve coming from the upper regions of the spinal chord.

The [tex]\text{parasympathetic}[/tex] nervous system mainly is composed of the cranial spinal nerves and the [tex]\text{sacral spinal nerves}[/tex]. The preganglionic neurons that arises from the brain or from the sacral spinal cord.

Therefore, the correct answer is "parasympathetic" neuron.

Answer:

Pawpaw means papaya. Hope you'll get some clues from here

Answer:

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Hello there!

Is there anything you need help with which is based on the story?

Answer: The cells and tissues support embryonic development in mammalian offsprings as these cells have the capacity to divide and differentiate.

Explanation:

Since the time from copulation till delivery of fetus several changes occur in the body of the mammalian mother including animals like cat, dog, and mouse to support the pregnancy. There are specialized totipotent cells which are proliferating specialized cells they have tendency to divide quickly and differentiate into functional types so that they can become a specialized organ or part of the body. If take an example of human which is also mammal in mother body after conception the egg gets fertilized to form sperm which changes to embryo the embryo divides and differentiate to form blastocysts and further divides and differentiate in several stages to become fetus.

The notion of a self-correcting science is based on the naive model of science as an objective process that incorporates new information and updates beliefs about the world depending on the available evidence. When new information suggests that old beliefs are false, the old beliefs are replaced by new beliefs.

The erosion of rock by wind is an example of an interactionbetween:

B. ɑtmosphere ɑnd Hydrosphere

The erosion of rock by wind is an example of an interaction

between: B) Atmosphere and Hydrosphere.

Erosion is the geological system in which earthen materials are worn away and transported by means of natural forces consisting of wind or water. A similar technique, weathering, breaks down or dissolves the rock, but does no longer involve movement.

Weathering is the breaking down or dissolving of rocks and minerals on Earth's floor. as soon as a rock has been damaged, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, flora, animals, and modifications in temperature are all dealers of weathering and erosion.

Learn more about erosion here: https://brainly.com/question/17905503

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Answer: Mutational effects can be beneficial, harmful, or neutral

Explanation:

Most non-neutral mutations are deleterious. In general, the more base pairs that are affected by a mutation, the larger the effect of the mutation, and the larger the mutation's probability of being deleterious.

"nature.com"

Answer:

The eicosanoids are a family of oxygenated derivatives of 20-carbon polyunsaturated fatty acids that includes prostaglandins, thromboxanes, leukotrienes, endocannabinoids, and isoecosanoids.

Answer:A

Explanation:it sounds right

Answer:

UCS=US=unconditioned stimulus. UCR=UR=unconditioned response. CS=conditioned stimulus. CR=conditioned response. NS=neutral stimulus.

Answer:

Explanation:

Heredity is the component that is not a main factor in the health triangle.

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