Answer:
Los métodos anticonceptivos para ser eficaces en el control de la natalidad deben ser seguros para las personas que los utilizan, es decir, no tener efectos adversos, o al menos, la menor cantidad posible. Ser reversibles, es decir, que no generen infertilidad de por vida. Deben ser además fáciles de usar, cómodos y fáciles de conseguir, esto es, económicos. Además deben ser eficientes en su objetivo de evitar la concepción, que es para lo que fueron creados.
Explanation:
La tasa de eficacia de un método anticonceptivo se mide por la cantidad de embarazos que se producen cada 100. Esta parece ser la característica más importante, y si bien es una de las más importantes, hay que tener en cuenta todos los otros factores mencionados, es decir que la gente pueda acceder a ellos, sean cómodos, seguros y a un precio coherente.
What substance heats up the fastest: water, dry sand, wet sand, rock
Answer:
The specific heat capacity represents the amount of energy, in joules, that it takes to raise the temperature of one gram of a given substance by one degree Celsius. Put more simply, the amount of energy it takes to raise a quantity of water by one degree Celsius would raise an equivalent quantity of sand by a little over 14 degrees. Likewise, sand does not need to lose nearly as much energy as water to produce equivalent cooling. Since it "holds" a lot less energy, it cools down much faster than sand.
Indeed, liquid water has an unusually high specific heat capacity. Because it is much less prone to temperature swings than other common substances, large bodies of water often work to moderate temperatures in a region. This helps to explain, for example, why average temperatures fluctuate very little over the year in San Francisco, a cit
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____________________ syndrome occurs when inflamed and swollen tendons are caught in the narrow space between the bones of the shoulder joint.
Answer:
Tendonitis
Explanation:
When a part of the body becomes too overused it can cause the tendons(fiborous connective tissue) to swell and fluid will accumulate around the tendon which connects muscle to bone. Along with this the lining of the tendon can become inflamed which causes Tenosynovitis.
5. According to the video, what is the goal of the tree of life?
a. To summarize a fossil record
b. To describe how natural selection works
To be a library of all life that has ever lived
d. To explain how all species are related to each other
A container on the counter labeled "ground beel" is not properly date marked. The cook tells the Person in charge (PIC) that it was
prepared recently. The Person in charge (PIC) should
Ouke the ground beer in temperature is alr(**) or lower
O ada the ground beer to chilor Noup.
O discard the ground beer
O use the ground beef on pizza prepared for immediate service.
Answer:
Correct Answer:
O discard the ground beer
Explanation:
When it comes to anything edible whether food or drink, safety and precaution is always taken. This is to prevent poisoning when an expired or harmful food or drink is taken. In the case of the undated "ground beer" on the counter, the best action would be to discard it entirely.
In the given case, The Person in charge (PIC) should - discard the ground beer
All foods that require time and temperature control (TCS) should be labeled with the following:
Common name of the food Date the food was made.Use by date.Date marking is a process assuring the food is discarded before these bacteria can cause foodborne illness.anything edible whether food or drink, safety and precaution is always taken.If something not marked properly should be discardedprevent poisoning when an expired or harmful food or drink is taken.Thus, In the case of the undated "ground beer" on the counter, the best action would be to discard it entirely.
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All the following are ways by which animals help to sustain the carbon cycle except
A when they die, they decompose to release carbon atoms
B. feeding directly or indirectly on plants C. drinking water from streams and ponds
D. breathing
Answer:
Option(C): drinking water from streams and ponds
The root of mutualism, mutual,
means...
A. together.
B. alone.
C. only.
Answer:
A. Together.
Explanation:
The root word of mutualism, mutual means together or a thing that many people share.
For example:
Mutualist Symbiotic Relationship refers to a relationship in which organisms are benefited, in other words it is a win-win.
The relationship between the Egyptian plover bird and the crocodile, that is mutualist relationship.
When a meat or something (food) gets stuck in the teeth of the crocodile then the Egyptian plover bird takes it out (like a toothpick).
The crocodile gets benefited.
The bird also gets benefited (its gets its food)
Hope this helps ;) ❤❤❤
Answer:
together
Explanation:
Mutualism is defined as a relationship that benefits two organisms, or it is defined as a doctrine in sociology where mutual aid is beneficial to society and the individual. An example of mutualism is pollination which is when bees take nectar from flowers and then deposit the nectar on another flower.
I need help please???
Answer:
The first one is called longitudinal wave .
the longish point is , i think 1
if a person who is blood type O marries a person who is blood type A, what are the possible blood types their children could have
Answer:
The possible blood types their children could have are A or 0.
Explanation:
The I gene determines the blood type of a person. I is the dominant allele, while i is the recessive allele.
IA dominant over i. The person presents A type of antigens. IB dominant over i. The person presents B type of antigens. IA and IB are codominant. The person presents both types of antigens, A and B. i is the recessive allele. The person does not present any antigen.Cross: a person who is blood type O with a person who is blood type A
Parental) ii x IA-
Gametes) i i IA -
Punnet Square) IA -
i IAi -i
i IAi -i
The - symbol represents the possibility of either IA allele or i allele. This is, the parental with blood type A might have the genotype IAIA or IAi
F1) 2/4 = 1/2 IAi
2/4 = 1/2 -i (-i could be either IAi or ii, depending on the genotype of the parental with blood type A)
Option 1: ii x IAIAF1) 100% IAi (The whole progeny will have blood type A)
Option 2: ii x IAiF1) 50% IAi (Half of the progeny will have blood type A)
50% ii (Halfa of the progeny will have blood type 0)
The possible blood types their children could have are A or 0.
How can particle interactions explain the properties and behavior of dry ice?
Answer:
Dry ice is the solid form of carbon dioxide (CO2). The particle interaction in dry ice is due to collision between inter-particles which results in agglomeration and shows the properties and behavior of dry ice.
The inter-particle collision in dry ice keeps the high temperature of dry-ice and make it sublimate (solid to gas) at room temperature and normal pressure.
The collision of carbon atoms in dry ice also makes it highly reactive and shows chemical properties of dry ice. When dry ice is added with magnesium, it left black powder, which is carbon
Describe the transport properties of the loop of Henle and explain the interactions between the ascending and descending limbs
Answer:
The loop of henle is a part of the renal functional unit.
This handle has an ascending part and a descending part.
In the descending loop, the urine that is formed inside enters a hypotonia, since a large amount of water is absorbed and the concentrations of solutes in the urine decrease, thus generating a hypoosmolar solution, that is, with less molarity.
In the ascending loop of henle, the opposite arises, ionic channels appear that increase the concentration of solutes, this is how the urine that runs through the interior of the ascending loop of henle becomes hyperosmolar.
Hyperosmolarity is the increase in concentrations of solutes, and the increase in molarity of the solution, which in this case would be urine.
Explanation:
A very important fact is that urea is absorbed in the ascending henle loop.
What is the relationship between DNA mutation and sickle-cell anemia? (1 point)
O Sickle-cell anemia and DNA mutations are correlated without any causal relationship.
O Sickle-cell anemia causes a DNA mutation.
O A DNA mutation causes sickle-cell anemia.
O A DNA mutation is correlated with but does not cause sickle-cell anemia.
Answer:
A DNA mutation causes sickle-cell anemia.
Explanation:
Sickle cell anemia is caused by a single code letter change in the DNA. This in turn alters one of the amino acids in the hemoglobin protein. Valine sits in the position where glutamic acid should be. The valine makes the hemoglobin molecules stick together, forming long fibers that distort the shape of the red blood cells, and this brings on an attack.
One of the most common causes of acute tubular necrosis (ATN) is:________.
a. ischemic conditions.
b. cytotoxic agents.
c. immune reaction.
d. prolonged postrenal kidney injury.
Answer:
a. ischemic conditions.
Explanation:
Hello,
In this case, considering that acute tubular necrosis (ATN) has been widely acknowledged as a harmful medical condition showing off the death of tubular epithelial cells that give the form to the renal tubules of the kidneys; it presents with acute kidney injury. Thus, common causes of ATN include low blood pressure and use of nephrotoxic drugs which is more technically known as a. ischemic conditions in which the blood flow is very weak.
Regards.
Activity 12-5: A Dihybrid Punnett Square. Consider your answers in the previous question. In a separate piece of paper, solve the Punnett square for a cross between two heterozygous individuals (BbRr x BbRr); write the genotypes of the gametes along the top and the side of the square and fill in the squares.
Answer:
See the answer below
Explanation:
For each heterozygous parent with the genotype BbRr, the possible gametes are: BR, Br, bR, and br. A set of these gametes from one of the parents will be lined up along the top of the Punnet's square while another set from the other parent will be lined up along the side of the square.
The result is shown in the attached image.
A research team discovered that a novel hormone X stimulates an enzyme that hydrolyzes proteins in the small intestine. However, when hormone X was added to a test-tube mixture containing the enzyme and proteins, no breakdown occurred.
Required:
a. Why is this the case?
b. Name ONE signal transduction pathway that hormone X is using to transfuse its signal. (write all the steps and intermediates)
Answer:
a. It is a hormone that acts upstream in the signaling pathway (i.e., acting as a ligand by binding to cell receptors)
b. Dopamine-mediated pathways
Explanation:
It is well known that many cellular transduction pathways are activated via binding of signaling molecules (ligands) to receptors capable of triggering signaling cascades into the cell. For example, dopamine is a signaling hormone (neurotransmitter) involved in diverse brain processes (i.e., motor control, emotional response, etc). It is a neurotransmitter that binds to dopamine receptors and then stimulates the enzyme adenylate cyclase in a process that subsequently activates the production of the second messenger cyclic adenosine monophosphate (cAMP). Finally, cAMP acts as an intracellular signal transductor that play roles in many biological processes by transferring into the cell the effects of dopamine.
other, than photosynthesis which process is Autotrophic.?Give examples too.
Answer:
Some rare autotrophs produce food through a process called chemosynthesis, rather than through photosynthesis. ... Instead, they make food using energy from chemical reactions, often combining hydrogen sulfide or methane with oxygen.
How does your body know when cells are missing
Answer:
Receptors provide information to nervous system about missing cells.
Explanation:
Your body know when cells are missing due to nervous system. The network of nervous system spreads throughout human body which provide information about what is going on in the body. If the cells are missing due to injury, the nervous system gives instruction to the body to produce more cells and transported that cells to the region where these cell are required. So receptors are responsible to provide information to nervous system about missing cells.
The body knows cells are missing as a result of the receptors sending
to the central nervous system.
The human body consists of cells which have neurons. These neurons are
responsible for the passage of messages and information to other parts of
the body.
When a cell is missing from the body, signals are passed to the central
nervous system which consists of the brain and spinal cord and they then
relay impulses which helps to fix the issue so as to ensure optimal
functioning of the body.
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A mixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. Arrange the lipids in order of elution by placing the first lipid to elute at the top.
a. triglyceride
b. cholesterol
c. sphingosine
d. phosphatidyl serine
e. sphingomyelin
A mixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. Arrange the lipids in order of elution by placing the first lipid to elute at the top.
a. triglyceride
b. cholesterol
c. sphingosine
d. phosphatidyl serine
e. sphingomyelin
The lipids in order of elution by placing the first lipid to elute at the top are as follows:
1. triglyceride
2. cholesterol
3. sphingosine
5. phosphatidyl serine
4. sphingomyelin
What are Lipids?Lipids are defined as a broad group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins, monoglycerides, diglycerides, phospholipids, and others. Important functions of lipids include storing energy, signaling and serving as structural components of cell membranes.
A lipid is a type of organic compound that is insoluble in water that includes fats, waxes, oils, hormones, and some components of membranes and serves as energy-storing molecules and chemical messengers.
When we arrange the elution on the basis of charge, triglyceride and cholesterol have no charge placed on first and second respectively, while sphingosine has 1 charge. and phosphatidyl serine and sphingomyelin have more than 2 charges
Thus, the lipids in order of elution by placing the first lipid to elute at the top are as follows:
1. triglyceride
2. cholesterol
3. sphingosine
5. phosphatidyl serine
4. sphingomyelin
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What do enzymes do? Please answer real quick
Answer:
Catalyze biochemical reactions.
Explanation:
Hello,
In this case, it is widely known that enzymes are able to take substrates or reactants to their active sites, in order to catalyze a raft of biochemical reactions by which products that are not usually formed under typical conditions are formed, and then allow them to dissociate from the surface of the enzyme. Such combination formed by an enzyme and its substrates is called the enzyme–substrate complex which is further taken to the isolated product.
Regards.
9. What types of resources are found in the Amazon jungle?
Answer:
Metals like bauxite, gold, manganese, copper, tin and timber.
The Amazon Jungle is rich for logging , coffee growing , meat
production and milk production.....
The relative value of grains for animals is determined primarily by metabolizable energy and crude protein content. From the information below, which grain is the best choice for feeding swine?Grain Crude Protein Metabolizable Energy $ Per TonBarley 13.00% 3.000 kcal/kg 170Corn 10.00% 3.600 kcal/kg 160Grain sorghum 12.00% 3,200 kcal/kg 140Wheat 14.00% 3,400 kcal/kg 180
Answer:
Corn
Explanation:
Good news for corn and soybean hog growers because these two grains are the main ingredients in pork diet and these feedstuffs should be affordable. According to metabolism, corn has the highest metabolic energy, i.e. 3600 k.cal/kg Therefore, corn is the best food for swin so, the correct answer is corn.Match the scientist with the correct description or statement regarding the discovery of the DNA structure.
1. The British scientist working on DNA structure in the 1940's at King's College in London
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
2. An expert of x-ray crystallography
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
3. An American scientist who won the Nobel Prize for work on protein modeling
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
4. Had conducted experiments that showed the ratio of adenine in a DNA molecule was equivalent to the ratio of thymine
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
5. Worked with Francis Crick in Cambridge at the Cavendish Laboratory constructing a model for DNA
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
6. Along with Watson and Crick, won the Nobel Prize for Physiology in 1962
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
7. Credited for the famous "photo 51"
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
8. Worked out mathematically what a helical defraction should look like in an x-ray defraction photo
a. Francis Crick
b. Rosalind Franklin
c. Erwin Chargaff
d. Linus Pauling
e. Maurice Wilkins
f. James Watson
Answer:
1. Maurice Wilkins
2. Rosalind Franklin
3. Linus Pauling
4. Erwin Chargaff
5. James Watson
6. Francis Crick
7. Rosalind Franklin
8.
Explanation:
1. Maurice Hugh Frederick Wilkins was a British scientist, both a molecular biologist and physicist. He made an outstanding contribution to the scientific discovery of the DNA structure. He is well known for his work in the 1940s at King's College in London, where he used optical spectroscopy to understudy the structure of the DNA.
2. Rosalind Elsie Franklin was an expert x-ray crystallographer and chemist, she contributed immensely to the understanding and discovery of the DNA structures as well as the molecular structure of coal, RNA and viruses.
3. Linus Carl Pauling was an American scientist who made a huge impact in the field of molecular biology, he played an important role in the molecular modelling of proteins and this helped in further understanding the DNA code.
4. Erwin Chargaff was an American scientist who formulated the Chargaff's rules and his experimentations helped to show that the ratio of adenine in a DNA molecule was equivalent to the ratio of thymine, as well of the ratio of guanine in a DNA molecule was equivalent to the ratio of cytosine.
5. James Watson and Francis Crick both worked in the Cavendish Laboratory to elucidate the 3- dimensional structure of the DNA.
6. Maurice Hugh Frederick Wilkins along with James Watson and Francis Crick won the Nobel Prize for Physiology in 1962 for their discovery of the molecular structure of the DNA.
7. Rosalind Elsie Franklin was an English scientist and x-crystallographer was famous for "photo 51", this helped to first prove that the DNA was a double helix structure.
8. Rosalind Elsie Franklin worked out mathematically what a helical defraction should look like in an x-ray defraction photo.
Drag each label to the correct location.
Using the legend, arrange the minerals that you tested according to their hardness. The hardness will increase from left
to right.
Mineral Letter
Quartz
sypsum
Gy
calcite
C С
magnetite
M
graphite
Gr
feldspar microcline F
apatite
A
tale
Hardne
Nourite
Mardines - 6.5
pyrite
Q GY CM Gr.
FA
From left to right, the correct order of the minerals from the least hard to the hardest is ⇒ Graphite, Talc, Gypsum, Calcite, Fluorite, Apatite, Magnetite, Pyrithe, Feldespat, Quartz.
Theoretical frame:
Hardness is one of the physical properties of minerals and is a significant one when identifying and recognizing them.
Hardness measures the resistance level of a surface to abrasion. In the specific case of minerals, it measures how minerals resist being scratched or penetrated.
The hardness level is determined by an attempt to scratch or produce a mark on an unmarked surface using sharp elements, such as nails, copper coin, glass, or a steal knife. Notice that these elements also vary in their hardness.
There are different methods used to define hardness, and they are not comparable to each other. The Mohs hardness method defines an ordinary qualitative scale that characterizes the mineral according to their resistance to being scratched by a harder element.
According to the Mohs hardness scale, the level in which the given minerals are placed is as follows,
Graphite ⇒ 1 - 2Talc ⇒ 1Gypsum ⇒ 1.5 - 2Calcite ⇒ 3Fluorite ⇒ 4Apatite ⇒ 5 Magnetite ⇒ 5 - 6.5Pyrithe ⇒ 6Feldespat ⇒ 6 - 6.5Quartz ⇒ 7Link to a related question:
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I need help with this
Answer:
I know the answer
Explanation:
Yes
Yes
Yes
Help .....plz help....
Answer:
2. sedimentation (decantation follows sedimentation)
3. immiscible (water and oil never mix with each other)
4. size
5. evaporation (condensation chills the mixture where evaporation heats the mixture )
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Answer:
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sedimentation
immiscible
evaporation
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Which purpose is the main function of the light-dependent reactions of photosynthesis?
Answer:
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem.
The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then used in the light-independent reactions.
Intrinsic factor A. increases gastric motility. B. causes the release of stomach acid. C. facilitates the absorption of vitamin B12. D. protects the stomach lining from the effects of stomach acid. E. stimulates the synthesis of DNA.
Answer:
C. facilitates the absorption of vitamin B12.
Explanation:
The Intrinsic factor is a substance that is produced by the stomach and it has the important function of producing vitamin B12 which is necessary for life. Vitamin B12 is used in the production of mature red blood cells. It also improves the function of the nervous system. The production of this intrinsic factor is a very vital role of the stomach because, in the absence of a stomach, for example, in the case of a gastrectomy, a person can only survive if he is given injections of Vitamin B12.
The stomach also serves as a holding center for food and eventually delivers the food to the small intestine and the duodenum.
What is the maximum magnification of most classroom compound light microscopes? 500x 1,000x 2,500x 5,000x
Answer:
2,500
Explanation:
Answer:
the answer is 2,500x
Why did the leaves rise? Will the leaf discs float faster or slower if the rate of photosynthesis is decreased? (5 points)
Answer:
Leave rise and floating depends on the production of oxygen.
Explanation:
The leaves rises due to consumption of oxygen which is produced during photosynthesis. Floating of leave occurs due to production of oxygen in the process of photosynthesis. The leaf discs float faster if the rate of photosynthesis is increases because oxygen production is also increases while the leaf discs float will be slower if the rate of photosynthesis is decreased due to low production of oxygen.
Which type of muscle contracts without nervous stimulation?
Answer:
the answer is the cardiac muscle
What is an ecosystem?
Answer:
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. ... Ecosystems can be very large or very small.
Explanation:
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