Answer:
Striated, smooth, and cardiac muscle cells contain vast numbers of cytoplasmic filaments that function during the contraction of these cells. ... The contraction of striated muscle cells shortens the muscle, which then moves the skeleton.Resuelve el problema relacionado con las etapas del ciclo menstrual: "Si el día fértil de la polola de Luciano es el 09 de noviembre y ella tiene un ciclo de 28 días ¿ Cómo puede calcular el primer día de menstruación de su polola en ese mes y el período fértil? En la respuesta debes registrar: Primer día de menstruación, Día de ovulación y período fértil.
Answer: El primer día de la menstruación comenzaría el 26 de octubre y el período fértil es desde el 6 de noviembre hasta el día 9 (fecha de ovulación)
Explanation:
El ciclo menstrual está compuesto por cuatro fases: menstruación, fase folicular, ovulación y fase lútea.
Menstruación: Eliminación del revestimiento engrosado del útero (endometrio) del cuerpo a través de la vagina. El flujo menstrual contiene sangre, células del revestimiento del útero (células endometriales) y moco. La duración media de un periodo es de entre tres días y una semana.Fase folicular: Comienza con la menstruación y termina con la ovulación. La glándula pituitaria libera la hormona estimulante del folículo (FSH), estimulada por parte del hipotálamo. Esta hormona estimula al ovario para que produzca entre cinco y 20 folículos (nódulos o quistes diminutos), que se acumulan en la superficie. Durante la fase folicular, el folículo en desarrollo provoca un aumento del nivel de estrógenos. El hipotálamo, en el cerebro, reconoce este aumento y libera una sustancia química llamada hormona liberadora de gonadotrofina (GnRH). Esta hormona hace que la hipófisis produzca niveles elevados de hormona luteinizante (LH) y FSH. En el plazo de dos días, los altos niveles de LH desencadenan la ovulación. Ovulación: El óvulo es conducido hacia la trompa de Falopio y hacia el útero por medio de ondas de pequeñas proyecciones similares a pelos. La vida del óvulo típico es de sólo unas 24 horas. A menos que se encuentre con un espermatozoide durante este tiempo, morirá. Entonces, la ovulación consiste en la liberación de un óvulo maduro desde la superficie del ovario. Suele producirse en la mitad del ciclo, unas dos semanas antes de que comience la menstruación.Fase lútea: Durante la ovulación, el óvulo se desprende de su folículo, pero el folículo roto permanece en la superficie del ovario. Durante las dos semanas siguientes, aproximadamente, el folículo se transforma en una estructura conocida como cuerpo lúteo. Esta estructura secreta progesterona y estrógeno. Esta combinación de hormonas mantiene el revestimiento del útero engrosado, a la espera de que se adhiera un óvulo fecundado (implante). Si el óvulo fecundado se implanta en el revestimiento del útero, éste produce las hormonas necesarias para mantener el cuerpo lúteo. Esto incluye la gonadotrofina coriónica humana (HCG), la hormona que se detecta en un análisis de orina para detectar un embarazo. El cuerpo lúteo sigue produciendo los niveles elevados de progesterona necesarios para mantener el grosor del revestimiento del útero. Si no se produce el embarazo, el cuerpo lúteo se marchita y muere, normalmente alrededor del día 22 de un ciclo de 28 días. El descenso de los niveles de progesterona hace que el revestimiento del útero se desprenda (menstruación)La duración media del ciclo menstrual es de 28-29 días, pero puede variar entre las mujeres y de un ciclo a otro. La duración del ciclo menstrual se calcula desde el primer día de la menstruación hasta el día anterior al inicio de la siguiente.
Si consideramos que el primer día fértil es el 9 de noviembre y el ciclo es de 28 días, el primer día de la menstruación comenzaría el 26 de octubre y el período fértil es desde el 6 de noviembre hasta el día 9 (fecha de ovulación) Esto es porque la menstruación ocurre aproximadamente 14 días luego de la ovulación si el ciclo es de 28 días. Los días más fértiles son aproximadamente desde 3 días antes de la ovulación. Aunque en algunos casos, la fertilidad puede durar hasta dos días después de la ovulación.
How does human consumption of limited resources impact the biosphere? 1 paragraph
Answer:
Human use of land has negative impacts. Human activities contribute to the erosion and pollution of beaches. ... More of the rainwater runs off leading to increased erosion and drier soil. Deforestation of land can also lead to desertification and a loss of biodiversity.The burning of fossil fuels and the growth of animal agriculture has led to large amounts of greenhouse gases (such as carbon dioxide and methane) in the atmosphere. Higher concentrations of greenhouse gases trap more heat in the biosphere and result in global warming. In turn, this drives climate change.Humans affect the quality, availability, and distribution of Earth's water through the modification of streams, lakes, and groundwater . ... The activities of humans have significantly altered the biosphere , changing or destroying natural habitats and causing the extinction of many living species.
Explanation: (:
describe physical or mental disability of Down syndrome
Answer:
It is usually associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features. The average IQ of a young adult with Down syndrome is 50, equivalent to the mental ability of an eight- or nine-year-old child, but this can vary widely.
Symptoms: Delayed physical growth, characteristic facial features, mild to moderate i...
Other names: Down's syndrome, Down's, trisomy 21
Causes: Third copy of chromosome 21
Risk factors: Older age of mother, prior affected child
Explanation:
Hope it helps
FOLLOW MY ACCOUNT PLS PLS
what is an amino acid
Unicellular organisms that have a nucleus?
A.Eubacteria
B.Fungi
C.Viruses
D.Protists
Use the scenario to answer the following question. A forest ecosystem is home to mountain lions, coyotes, bobcats and deer. The deer eat grass. The mountain tions, coyotes, and babcats eat deer. Hunters began killing large numbers of mountain lions, coyotes, and bobcats. About twenty years later, the deer population had largely increased. The teacher asked the students to explain why the population of deer had a large increase in population size. Which student's argument MOST accurately explains the increase in the deer population? A Student 4: The deer population increased because with fewer mountain lions, coyotes, and babcats there was less competition within the deer population. B. Student 1The number of deer increased because deer populations are always increasing, even when there are mountain lions, coyotes, and bobcats preying on them. Student 3: The number of deer increased because with fewer mountain lions, coyotes, and bobcats, the deer had more food available to eat. D Student 2: The number of deer increased because without mountain , coyotes, and bobcats, the deer longer and had more offspring that also lived longer,
Answer:
A. student 4
Explanation:
The population of deer increase because with fewer mountain lions, coyotes and bobcats there was less competition within the deer population
The correct statement is that; The number of deer increased because without mountain , coyotes, and bobcats, the deer lived longer and had more offspring that also lived longer."
What is food chain?The food chain describes the feeding relationships that exists in nature. Now this ecosystem has the food chain; grass ---> Deer ----> babcats ---> coyotes ----> mountain lions.
Now we are also told that the mountain lions eat the the bobcats and the hunters are killing the mountain lions, coyotes, and bobcats, the predators of the deer hence been removed hence the deer population multiplies.
Therefore, the correct statement is that; The number of deer increased because without mountain , coyotes, and bobcats, the deer lived longer and had more offspring that also lived longer."
Learn more about food chain: https://brainly.com/question/9904853
In the Gizmo, what light intensity and CO2 level do you think will maximize the rate of photosynthesis? (adjust the slider bars to determine this)
Answer:
Higher.
Explanation:
Higher light intensity as well as higher concentration of carbondioxide gas will increases the rate of photosynthesis because high light intensity allows the entering of carbondioxide gas inside the leaves through opening of stomata whereas carbondioxide gas is the reactant in the process of photosynthesis. If there are more reactants available so more food is produced in the form of glucose during the process of photosynthesis so we can conclude that high light intensity and carbondioxide levels increases the rate of photosynthesis.
Land from which water runs off into streams is known as a
1 watershed
2 divide
3 channel
Answer
The answer is watershed and that is an area that catches all the rain and snow.
Which correctly lists the three elements that geologists measure to determine the age of an organism's remains?
argon, nitrogen, and carbon-12
carbon-14, nitrogen, and carbon-12
O nitrogen, potassium, and carbon-14
carbon-12, potassium, and argon
Answer:
I think that it will be option b. Carbon 14. Nitrogen. Carbon 12
Explanation:
They use something called carbon dating and its measured by the half life decay of the radioactive isotopes in carbon I believe
Answer:
Hi, there the answer is
carbon-12, potassium, and argon
Explanation:
Rocky's class recently got pet turtles. When putting together the habitat, decomposers were added to
the soil, as well as some smaller organisms that turtles eat. Some students wanted to get "fake" plants
for the terrarium, but Rocky insisted that this would negatively affect the carbon and oxygen cycles.
Which of the following reasons support why Rocky is correct?
Carbon won't be removed from the air.
Photosynthesis won't occur.
The turtles won't be able to breathe.
All of these are correct.
Answer:
D. all of these are correct
Explanation:
I so sorry if I am wrong the answer
Why humans need organs, like the liver and pancreas, but amoebas do not.
Answer:
They have no use for it, just like they dont have any type of respiratory organs like lungs.
Explanation:
In the case of nutrition and digestion they obtain food by capturing their prey with their pseudopodia. The food is internalized through a type of endocytosis known as phagocytosis. Nutrients are obtained as the enzymes digest the food inside the vacuole and when they are finished the food vacuole dissolves.
Humans need organs, like the liver and pancreas, but amoebas do not because human is a complex multicellular organism that necessarily requires a variety of organs in order to perform specific functions.
What do you mean by Organs?Organs may be characterized as collections of tissues as a part of the body that performs a specific function. Some examples of organs may include the heart, the lungs, the kidneys, the stomach, etc.
Amoeba being unicellular organism has the capability to change their shape. They capture their food through pseudopodia and diffuse the substance easily through their single cells.
While on contrary, humans are more complex living organisms on this earth planet. So, they require a specific set of organs and organ systems in order to facilitate their survival.
To learn more about Organs, refer to the link:
https://brainly.com/question/545314
#SPJ2
Which statement best describes the pioneer organisms involved
in ecological succession?
Select one:
Pioneer organisms are restricted to desert biomes.
Pioneer organisms do not require sunlight.
Pioneer organisms are the last organisms to appear.
Pioneer organisms modify the environment.
Answer: Pioneer organisms modify the environment.
The statement that best describes the involvement of pioneer organisms in ecological succession is as follows:
Pioneer organisms modify the environment.Thus, the correct option for this question is D.
What is Ecological succession?Ecological succession may be defined as the gradual and continuous replacement of one community by another community over a long period of time.
Pioneer organisms are those organisms that arrive first in any ecosystem which is bare. The pioneer species are always found to be present in the bare area. The organisms that are the last organisms to appear known as climax organisms.
Pioneer organisms modify the environment in such a way that makes the bare atmosphere a little bit improved with respect to the need of other organisms.
Therefore, the correct option for this question is D.
To learn more about Ecological succession, refer to the link:
https://brainly.com/question/17622379
#SPJ2
what do we call the flight in bees whereby the go and mate and the drones are killed after mating has occurred?
Answer:
I believe it's called mating flight
Compare comets, meteors and steroids
Write a short answer for the question
Answer:
Asteroids are smaller than a planet, but they are larger than, A meteor is what happens when a small piece of an asteroid or comet burns up upon entering Earth's atmosphere.
WILL GIVE BRAINLIEST IF CORRECT
The dog breed shown below has been bred for many generations. It has been bred for its small size and friendly temperament. This is an example of...
a. Cloning
b. Artificial selection
c. Genetic engineering
d. Asexual reproduction
Answer:
yostos its c!!
Explanation:
wassup from Mrs hees 4th period sciens at bms!!
In aquatic ecosystems, which zone does not receive light?
a. photic
C. aphotic
b. benthic
d. both b and c
C. aphotic zone
... ... ...
I NEEEEDDD HELP PLEASE
Answer:
Digestive, excretory, circulatory, lymphatic, respiratory
Explanation:
digestive is your stomach
excretory is your colon
circulatory is your heart
lymphatic is your white blood cells and others
respiratory is your lungs
I'll go more in-depth in the comments but I think you need answers now
Which statements about waves are true? (Select TWO)
A
Light waves are mechanical waves.
B
Sound waves are mechanical waves
C
Sound waves are electromagnetic waves
D
Only mechanical waves can travel through a vacuum.
E
Only electromagnetic waves can travel through a vacuum.
F
Only electromagnetic waves can transport energy.
Answer:
F
Explanation:
Where is most of the baryonic matter (ordinary matter) of the universe found?
A. in planets and natural satellites
B. in comets and asteroids
C. in dark matter and dark energy
D. in interstellar gases and stars
Most of the baryonic matter (ordinary matter) of the universe are found in
planets and natural satellites.
The baryonic matter is composed of particles present in the nucleus such as
the proton and neutron . Electrons or other sub-particles aren't present in
the baryonic matter.
This type of matter is present in stars with a percentage of about 10 percent
and in planets and satellites with a higher percentage.
Read more on https://brainly.com/question/23252657
Drag the tiles to the correct boxes to complete the pairs. Identify the types of inheritance based on the expression of alleles in the organism. dominant recessive multiple presence of many alleles for the trait to be expressed  presence of two alleles for the trait to be expressed  presence of a single allele for the trait to be expressed 
Answer:
1-Dominent 2-Multiple 3-recescive
Explanation:
but pls try and work it out multiple times bc I got this but u might get differently
GIVING BRAINLIEST!!!!!
why is the bladder like a water ballon?
Answer:
It fills up with waste liquids (known as urine) and swells up to store more of the waste fluid.
Explanation:
Answer:
So that it is kept flexible respective of the amount of urine it holds without getting damaged
Do hurricanes occur in the Midwest? Why or why not?
Answer:
Hurricanes are not common in the Midwest. However, if a hurricane is particularly strong, it can move far enough northward and inland to cause a significant rain event for areas in the Midwest.
The autonomic nervous system works without our control. Which of the following does
cardiac muscle fall under?
involuntary or
voluntary
Answer: Involuntary.
The Autonomic nervous system is a subdivision of the Peripheral nervous system and it is in charge of the involuntary processes in the body such as blood pressure, respiration and the heart rate. As such, its effectors are under involuntary control.
The Autonomic nervous system controls the smooth and cardiac muscles in the body as well as the glands. This is where it earns its other name, the Visceral nervous system.
Explanation:
A substace put in a space or cantainer to fill it, usually applied in wood to fill up cracks and grooves
Answer:
Glue and sawdust.
Explanation:
Glue and sawdust are the substances that applied in wood to fill up cracks and grooves. You can use the glue and sawdust method to fill the gaps present in the wood. This method is a quick and easy solution that successfully fill up the gaps and grooves on the wood. The method of using this method is, first fill the gap with a small amount of wood glue, then rub sawdust into the gap which attached the saw dust with itself and the gaps are filled.
explain in at least 5 steps what is occurring in the diagram
Describe how water travels through a watershed.
Answer:
The entire area of land that drains water into a river is known as a river basin. The vast majority of this water flows into seas and oceans, although some evaporates, another is absorbed by living beings and another is trapped underground
PLEASE HELP ASAP
A population of fish has a carrying capacity of 2,200 fish, with a maximum rate of increase of 1.0 per individual per year. Using the logistic population growth model, what is the approximate population growth rate for a population of 1,580 fish?
259 fish per year
360 fish per year
445 fish per year
863 fish per year
Answer:
258 fish per year asap asap asapAnswer:
its 445
Explanation:
How many of the habitable planets are less than 4 times the radius of Earth?
Pollutants concentrated in the northern part of the Gulf of Mexico often create a dead zone. A dead zone is an area of an aquatic ecosystem that does not have enough oxygen to support sea life. Some of the chemicals that cause the Gulf dead zone come from as far away as Montana. Use this information and what you know of United States geography to select the statement that BEST explains how pollutants from Montana have an impact in the Gulf of Mexico.
Answer and Explanation:
Hello. You did not present the answer options, but we can say that Montana pollutants have an impact on the Gulf of Mexico, due to the Mississippi River. That's because Montana and the Mississippi River are in the same hydrographic basin, which causes Montana pollutants to reach the Mississippi River, which takes these pollutants to the Gulf of Mexico, as the Mississippi River flows into the Gulf of Mexico.
Therefore, we can say that Montana pollutants are easily taken to the Gulf of Mexico and this impacts marine life in an influential way.
Help Please!!!!!!!!!!!!!!!!
Answer:
cant see it
Explanation: