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Which of the followings are true of human genomic libraries? (Two correct answers).

A. They contain DNA copies of the mRNAs present in a particular cell or tissue.

B. They contain the equivalent of the entire human genome, cloned into a vector.

C. The use of the enzyme reverse transcriptase is crucial in their construction.

D. They are likely to contain sequences derived from introns.

Answer:

Explanation:

Schistosoma life cycle:

1. Human excretes schistosomes eggs through feces and/or urine. These eggs eventually reach the water.

2. Once in the water, schistosomes eggs hatch and release immature larvae named miracides.  

3. Miracides swim and penetrate a freshwater snail, which is an intermediary host.  

4–5. Once inside the snail, miracides turn into sporocites and then into cercariae. Cercariae characterize by having a bifurcated tail. Snails release the cercariae in water, and they swim until they get in touch with a mammal. Once they reach the mammal, they penetrate the skin and get into the body. This is the stage in which the parasite becomes infectious to humans. Just a few cercariae are enough to infect a person.  

6. When cercariae penetrate their host body, they lose their tails and turn into schistosomules. These new forms travel to the liver, where they end their maturation process.  

7. Males and females mate in the liver and migrate to veins of the intestine or bladder. Once there, the females lay the eggs, which are then excreted by the host. And the cycle begins again.

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Excavata are asymmetrical protists. The group receives its name because of the appearance of the feeding groove. Excavata is composed of many protists. One of them is Parabasalid.

Parabasalids are parasitic protists, and one of them is Trichomonas vaginalis, which is transmitted sexually.

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Sporangium. This is the reproductive structure of the mushroom and the one that is usually eaten. Spores develop inside the sporangium. Its surface is covered by a protector cuticle. It can be eaten when it is closed or when it is already open. However, when open is tastier.

Answer:

This biome features forests and grasslands that go dormant during the winter.

This biome features high levels of biodiversity and is located near the equator.

This biome features a level of permafrost and a short growing season during the winter.

This biome features tropical grasslands and is located near the equator.

Answer:

In three stages of production to which are hold by the law of diminishing marginal returns the second stage is considered to as the rational stage of production as compared to the first and third stage this is due to the fact that this stage it comes out with the best assumptions for efficient and sustainable production, thereby the stage it simultaneously shows the positivity of the average products and marginal product hence, in the increase of labour the total production or outputs increased likewise with the same quantity of fixed factor, therefore this stage it gives direction to the producer on how the higher units of output can be produced.

Unlike the first stage to which it shows each additional variable could enhance more production and such this it signifies an increasing of marginal return but for this case it do not give out the direction in permanent production since labours are needed fewer and in the decrease in number of labour can brings about underproduction.

Also the third stage marginal return is frankly negative because in adding more variable inputs will further led into adding more number of labour hence the increase of labour will contributes to under production as it may be due to labour capacity and efficiency concern.

Answer:

Organic fertilizers are natural, in that the nutrients they possess are strictly comprised of plant- or animal-based materials. ... Cow manure, decaying leaves, and food compost are all forms of organic fertilizer. Inorganic fertilizer is synthetic, comprised of minerals and synthetic chemicals.

Explanation:

Answer:

D.

Explanation:

Because living things is responsible for reproduction

The characteristics of living things that is very important for a group of organisms, but not a single organism is their ability to reproduce.

LIVING THINGS:

Some of the characteristics of living things include:

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haploid means there is 23 pair of chromosome but have n ploidy

Answer: Dorsal.

Explanation:

The neural plate is a region of the dorsal ectoderm that develops into the neural ectoderm. It is a flat structure, with columnar appearing cells, and the formation of the neural ectoderm is the first step in the neurulation process. This region is generated from the thickened mid-dorsal surface opposite the primitive line of the ectoderm. From this epithelial zone the various types of neuronal and glia cells belonging to the nervous system are derived. For the neural plate to be built, it is necessary that the epiblast cells converge towards the midline of the embryonic disc forming a groove of the primitive line, delimiting a longitudinal axis of bilateral symmetry around which the embryonic structures and their organs will be aligned. From this moment on, the embryo will have a rostral (cephalic) and caudal (tail) region as well as a left and right side and a dorsal (back) and ventral (front) surface. From the folding of the neural plate or neurulation, the neural tube and the development of the entire nervous system will be formed.

The neural tube is tubular structure that undergoes modifications and will give rise to a central nervous system structure (encephalon and spinal cord).  The neurulation process begins by means of signals sent by the dorsal mesoderm and pharyngeal endoderm to the ectodermal cells located above these germ layers. These signals cause this area of the ectoderm to elongate into a columnar plate of cells. The elongation allows the differentiation of the cells of the future neural plate, with respect to the pre-epidermal cells surrounding the area.

So, the neural tube is formed by invagination from the dorsal region of the ectoderm (neural plate) induced by the notochord while it is forming. This occurs at the beginning of the third week of conception by a process called neurulation.

Answer:

Vagus nerve is the 10th cranial nerve. It is long start from brain and distributed over head, thorax and abdomen.

Explanation:

1.   In the salivary gland the secretory and vasodilator effect on afferent nerve is mediated mainly by parasympathetic reflex which is given by vagus nerve.

2.   Pyloric sphincter is the part present between the stomach and small intestine which regulate the flow of food particles from stomach to the intestine. Vagus nerve control the activities of pyloric sphincter. Vagus nerve help the pyloric sphincter to relax.

3.  Efferent nerves of vagus nerve help the gall bladder to contract. Vagus nerve is stimulating the gastric tract to contract. So the vagus nerve stimulation promotpromotprthe production of CCK hormone and it will lead to the contraction and secretion of hormones from the gallbladder. Those contractions will help the gallbladder to empty the hormones from gallbladder.

4.  The efferent nerves of vagus nerves act on the smooth muscles of duodenal papila. As above says it lead to the contraction of smooth muscles and also promote the production of CCK.

Answer:

You can get infected with hand, foot, and mouth disease if you have the virus on your hands and then touch your eyes, nose, or mouth. To lessen your chance of getting sick, don't touch your eyes, nose, and mouth with unwashed hands.

You can get infected with hand, foot, and mouth disease if you have the virus on your hands and then touch your eyes, nose, or mouth. To lessen your chance of getting sick, don't touch your eyes, nose, and mouth with unwashed hands.

There has been several mechanisms, like resistance to antimicrobial agents, encapsulation or secretation of proteins that affects and might destroy the phagocyte along with some leukocytes in our body perform phagocytosis as a defense mechanism against the pathogenic bacterium.

These phagocytes contain lysosomes, intracellular granules that possess bactericidal substances. When the phagocyte ingests the pathogen, a phagosome is formed, which merges with the lysosome, forming the phagolysosome, which is where toxic substances and enzymes kill the ingested microorganism.

There are several mechanisms by which a microorganism can survive this process as resistance to antimicrobial agents. Some bacteria use phenolic glycolipids from their cell wall, to eliminate toxic oxygen compounds.

Therefore, You can get infected with hand, foot, and mouth disease if you have the virus on your hands and then touch your eyes, nose, or mouth.

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Answer:

Unless the egg is fertilized by a sperm while in the fallopian tube, the egg leaves the body about 2 weeks later through the uterus — this is menstruation. Blood and tissues from the inner lining of the uterus combine to form the menstrual flow, which in most girls lasts from 3 to 5 days.

Answer:

water

Explanation:

this is because when you take in water it helps in regulating the body's temperature hence pass out as urine

Explanation:

D. not scientific is the answer

hope this helps you

have a nice day

Answer:

D I believe

Explanation:

if there is no experimental test to disprove the hypothesis, then it lies outside the realm of science

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Answer:

Megan should add Maple, 39%

OAmalOHopeO:

Answer: The answer is C

Explanation:

just add them up unlit you get a total of 100 percent. But 39 is the correct answer 7+12+15+27+39=100

Answer:

The muscular layer of the ureter consists of longitudinal and circular smooth muscles that create the peristaltic contractions to move the urine into the bladder without the aid of gravity.

Answer:

The ureter

Explanation:

The ureter is a long thin tubular structure 10-12 inches long which carries urine produced in the kidney to the bladder. The urine is transported by a process called peristalsis. The ureter actively propels urine from the kidney down into the bladder.

Answer:

stage. 1

Explanation:

stage.1 it is right

Answer:

Stage 1 is the larva stage and Stage 2 is the adult stage.

Explanation:

answer : biosphere

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Answer:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Answer:

biosphere

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

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Answer:

virus are obligate parasites. Viruses do not, however, carry out metabolic processes. Most notably, viruses differ from living organisms in that they cannot generate ATP.

Answer:

c. Lane 2, 4 and 5.

Explanation:

Two bands will be seen when a fraction of DNA added to gel is bound by Lac repressor protein. Radiolabeled LacO DNA will have two bands. Lac repressor is encoded with lacl gene. It has binding ability due to allolactose formation.

Answer:

wavelength: the distance between successive crests of a wave

frequency: the rate per second of a vibration constituting a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light)

electromagnetic energy is used for wifi, cell phones, microwave ovens etc.

the electromagnetic spectrum includes radio waves, microwaves, infrared radiation, visisble light, ultraviolet, xrays and gamma rays

the only part we can see is visible light

visible light can be characterised by the colours of the rainbow

the longest wavelength is red and the shortest is violet

when combined, the colour is perceived as white or beige

Answer:

Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy.

Explanation:

WAVELENGTH=

PHYSICS

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

"a range of wavelengths"

2.

a person's ideas and way of thinking, especially as it affects their ability to communicate with others.

"when we met we hit it off immediately—we're on the same wavelength"

FREQUENCY=

Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

ENERGY=

energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.

Answer:

鱼类和鱼形动物的区别主要在于口与鳃结构的基本不同

Explanation:

Answer:

The lower limit is 0.65°C

The upper limit is 1.05°C

the average is 0.85°C

The difference between the average and the lower limit is:

0.85°C - 0.65°C = 0.20°C

the difference between th average and the upper limit is:

0.85°C - 1.05°C = -0.20°C

Then we can write the change in temperature as:

T = 0.85°C ± 0.20°C

Now we want to find the error bar.

The error bar would be the total distance between the lowest value and the largest value.

Then the error bar is:

1.05°C - 0.65°C = 0.40°C

notice that the error bar is twice the error, which makes a lot of sense because the error (± 0.20°C) goes up and down.

Then the error bar in this measure has a magnitude of 0.40°C.

Answer:

The primary harmful effects of microbes upon our existence and civilization is that they are an important cause of disease in animals and crop plants, and they are agents of spoilage and decomposition of our foods, textiles and dwellings.

Explanation:

may this answer is helpful for you

Answer:

the secretion of adh is cauesd by increase in osmotic pressure of blood

Answer:

Protozoa

Explanation:

The long, wavelike cells seen under the microscope would most likely be protozoa and the microorganism responsible for Mr. L's symptoms.

Tick as a vector is capable of causing diseases such as lyme disease, anaplasmosis, babesiosis, Powassan virus disease, tularemia, and a host of other diseases. Among all the diseases, babesiosis is particularly caused by a protozoan known as Babesia microti and it elicits malaria-like symptoms in individuals. Most of the other diseases are caused by bacteria pathogens while a few are caused by virus.

Apart from the above, the morphological characterization of the microorganism responsible for Mr. L's disease is typical for protozoans. Many of them are long and flagellated with a wave-like motion as a movement.

Hence, the case of Mr. L would be that of protozoa.

Answer:

In population genetics, the Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences

Explanation:

An allele frequency is computed by dividing the total number of copies of all the alleles at that specific genetic locus in the population by the number of times the allele of interest is observed in a population. The decimal, percentage, or fractional forms of allele frequencies are all acceptable.

The Hardy-Weinberg equilibrium, model, theorem, or law of population genetics states that, in the absence of additional evolutionary factors, allele, and genotype frequencies in a population will remain constant from generation to generation.

Therefore, The lesson and figure 12.12's allele frequencies are used in this question as well. The percentage of individuals with two dominant arm length alleles can be calculated by multiplying 0.6 by 0.6. The population size (100 people) multiplied by that percentage yields the number of people that are homozygous dominant for the arm length allele.

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