Cual de estos no se podria observar en un microscopio optico crestas mitocondriales, poros de la membrana nuclear, cromosomas de una celula animal condensados durante la mitosis, las dos capas lipidas que forman la membrana plasmatica
Answer:
Crestas mitocondriales, poros de la membrana nuclear y las capas lipídicas que forman la membrana plasmática no son visibles al microscopio óptico.
Explanation:
El límite de resolución de un microscopio óptico es de, aproximadamente, de 0,2 μm (es decir 10⁻⁶ m). Es decir, que en un microscopio óptico sólo podrán verse células y estructuras celulares mayores a 0,2 μm, y en algunos casos serán visibles sólo con tinciones especiales.
Por ende, entre las cuatro estructuras que se nos presentan en el problema sólo los cromosomas de una celula animal condensados durante la mitosis pueden verse al microscopio óptico.
Tanto las crestas mitocondriales como los poros de la membrana nuclear y las capas lipídicas que forman la membrana son estructuras muy pequeñas y visibles solamente al microscopio electrónico.
The ______ ______
surrounds the nucleus and is
made of two lipid bilayers.
I need a huge explanation!! I’ll give brainliest.
Answer:
Deep-ocean tsunami detection buoys are one of two types of instrument used by the Bureau of Meteorology (Bureau) to confirm the existence of tsunami waves generated by undersea earthquakes. These buoys observe and record changes in sea level out in the deep ocean.
Explanation:
hope this helps.. if correct give me brainliest plz!!!!
2. An atom consists of 21 protons 22 neutrons and a number of electrons which
information will be MOST helpful in determining the atom's identity
The number of protons and neutrons
The number of protons
The number of electrons
The number of valence electrons
CUERALL
Answer:
the number of valence electrons cuerall
how is the plant able to obtain each ingredient
Answer:
light enters a plant through its leaves O2 enters the plant through the stomata's or open pores
and water enters through the roots then up the stem to the tubes to leave
Explanation:
hopefully this helps
The Plants able to obtain each ingredients from the atmosphere. the light from the sunlight, [tex]CO2[/tex] from the stomata, and the water from the roots.
Stomata allow plants to absorb [tex]CO2[/tex] from the atmosphere. Water is taken from the earth by plants and transmitted to their leaves via their roots. The only source of light that the chlorophyll and other green parts of the plant absorb is sunlight.
Plants use sunlight, water, and carbon dioxide to perform photosynthesis.
They produce Chlorophyll, the pigment that makes plants green, by using stored carbon, hydrogen from water, and magnesium from the soil. They make Adenosine triphosphate, which is vital in energy transfer, by combining phosphorus, oxygen, and carbon.
Thus, Plants take nutrient from the atmosphere . light from the sunlight, [tex]CO2[/tex] from the stomata, and the water from the roots.
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Which of the following passages has the most objective tone?
A
Do you know about the brave dogs in Nome, Alaska, who saved the town in 1925?
B
The people of Nome, Alaska were in big trouble in 1925. It was up to the dogs to save them.
C
The hero dogs in Nome, Alaska, did what no pilot could do: they brought medicine to the town.
D
In 1925, people were sick and planes couldn't land in Nome, Alaska. Teams of dogs delivered the medicine.
Answer: in 1925, people were sick and planes couldn’t land in nome, Alaska. Teams of dogs delivered the medicine
Explanation: I got it right on a quiz
In 1925, people were sick and planes couldn’t land in Nome, Alaska. Teams of dogs delivered the medicine has the most objective tone. Thus, the correct option is D.
What is the objective tone?Objective tone is an impartial tone. This tone does not show any kind of feelings for or against a topic which therefore, is an unbiased or neutral feeling. The objective tone often uses higher level words and avoids pronouns such as I and you in the sentences, creating a type of formal tone. Subjective tone is a personal, biased, emotional, and often informal kind of tone.
Objective tone refers to an impersonal style of writing, which gives us the information about something however it does not include any information about the writer. So, a sentence like this: "In 1925, people were sick and planes couldn't land in Nome, Alaska. Teams of dogs delivered the medicine" is of the objective tone, Because it just tells us a fact.
Therefore, the correct option is D.
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SOMEONE PLZ ANSWER
Which of the following statements is true:
A
Longitude lines go up to 90 degrees.
B
The Prime Meridian is located in Washington, D.C.
C
There are 100 minutes per degree.
D
Longitude lines go up to 180 degrees.
Answer:
Your answer is D).
Why is DNA in this world?
Answer:
According of what I remember
DNA is vital for all living beings even plants. It is important for inheritance, coding for proteins and the genetic instruction guide for life and its processes. DNA holds the instructions for an organism's or each cell's development and reproduction and ultimately death.
Red-green color blindness is an X-linked recessive disorder.
A Punnett square is shown. The columns are labeled X Upper B and Upper Y. The rows are labeled x Upper B and x b.
What is the probability of the offspring having red-green color blindness for the cross that is represented by the Punnett square?
0 percent
25 percent
50 percent
75 percent
Answer: 25%
Explanation: This is the correct answer on Edge 2020 (just took the unit test review and made a 100%) ^-^.
X-linked recessive disorder refers to the genetic condition in which mutations or errors are associated with the gene are present on the X chromosome. The male will be affected by the disorder, while the females can be carriers.
In the given Punnett square, there is a 25% chance that the offspring can be -red-green color blind.
Red-green color blindness in people refers to the difficulty in distinguishing the colors like red, green, orange, and yellow. People with color blind have a normal life and there is no proper cure for the condition.
Thus, the percentage of the offspring that will be red-green color blind is 25%.
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Which of the following best describes soil fertility?
O An inexpensive way to maintain plant health and maximize crop productivity
O The amount of nutrients available in a soil
O A measure of soil quality which stays constant throughout a growing season
O The quality or ability of a soil to provide nutrients to plants
Answer:
O the amount of nutrients available in soil
Explanation:
good answer
Measure of soil quality which stays constant throughout a growing season is best describes the soil fertility.
What do you mean by soil fertility?Soil fertility refers to the ability of soil to sustain agricultural plant growth, i.e. to provide plant habitat and result in sustained and consistent yields of high quality.
A fertile soil will contain all the major nutrients for basic plant nutrition (e.g., nitrogen, phosphorus, and potassium), as well as other nutrients needed in smaller quantities, e.g., calcium, magnesium, sulfur, iron.
The following properties contribute to soil fertility in most situations: Sufficient soil depth for adequate root growth and water retention; Good internal drainage, allowing sufficient aeration for optimal root growth.
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Give two examples each of centrifugal force
Answer:
Centripetal Force Vs Centrifugal Force.
Explanation:
Answer:
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- two examples of centrifugal is when mud flicks off of a car tire
and when a car drives around a curve. hope i could help!
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Explanation:
Which of the following is true about environmental tobacco smoke (ETS)?
Adults are more heavily exposed to ETS than children.
ETS accelerates the buildup of plaque in the heart and blood vessels.
ETS is responsible for more lung cancer deaths than heart disease deaths
annually.
O ETS has fewer carcinogens, tar, and nicotine than mainstream smoke.
The statement 'ETS accelerates the buildup of plaque in the heart and blood vessels' is TRUE about environmental tobacco smoke (ETS). it is harmful to health.
What is environmental tobacco smoke (ETS)?Environmental tobacco smoke (ETS) refers to the smoke present in an environment due to cigarettes, which may be harmful to health.
It has been shown that environmental tobacco smoke (ETS) contains carcinogenic substances.
Moreover, nocive substances in environmental tobacco smoke (ETS) can also enter the body through respiration and travels in the circulatory system.
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if an atom contains 5 protons, 4 neutrons, and 3 electrons. its atomic mass is
Answer: 9
Explanation:
atomic mass= protons + neutrons
5+4 =9
True or False...The Stereoscope/Dissecting Microscope is used to view small specimens.
i guess the statement is false
differences between reproduction in mammals and amphibians.
Answer:
the answer is a little weird but hope this helps
Explanation:
While all of these animals reproduce sexually (meaning that the species consists of males and females and mating involves the fetilization of eggs by sperm), reptiles and mammals reproduce through internal fertilization (inside the female) whereas amphibians practice external fertilization.
Answer:
While all of these animals reproduce sexually (meaning that the species consists of males and females and mating involves the fetilization of eggs by sperm), reptiles and mammals reproduce through internal fertilization (inside the female) whereas amphibians practice external fertilization
Cells carry out respiration continuously because all living things need a constant supply of _________________________________.
A Food
B Water
C Energy
D Oxygen
Ice floats because
a.)ice is hydrophobic
b.) water is more dense as a solid
c.)ice is hydrophilic
d.)water is less dense as a solid
And Explain
Answer:
D
Explanation:
Because ice less dense than the water.
Messenger RNA (mRNA) contains the instructions for —
A. building mitochondria
B. protein assembly
C. DNA replication
D. RNA synthesis
if chlorophyll did not work properly during the process of photosynthesis, how would this affect the plant's ability to make glucose?
Answer:
it would not turn green an nutrients would be lost because chlorophyll helps the plant with their food
If a strand of DNA has 24% T, what percent will be G?
Answer:
points
Explanation:
for freee thanks and sorry
Why is it dangerous to a fetus for the pregnant mother to drink alcohol?
PLEASE HELP QUICK!!!
How is earths surface most likely to change as the water freezes and expands on a mountain side over time?
Erosion will cause the ice to crack the rock
Physical weathering will cause the ice to crack the rock
Chemical weathering will cause the water to dissolve the rock
Disposition will cause the water to break the rock into sediment
The earths surface most likely to change as the water freezes and expands on a mountain side over time because Physical weathering will cause the ice to crack the rock.
What is soil erosion?Erosion is nothing more than the displacement of land that happens from one place to another. In nature, the erosive process occurs by the natural action of the sun, winds and, mainly, rainwater.
It is a natural procedure, however, human action contributes to its intensification. The uncontrolled erosion process causes great damage to the environment, as it acts on the wear of the soil, makes it difficult to maintain species of animals and plants, in addition to disrupting human activities.
In this case, Erosion involves the wearing down, transport and deposition of soils and rock particles. So, the Physical weathering will cause the ice to crack the rock.
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If the pituitary is so important and Eric is not getting replacements of hormones the pituitary makes (except for ADH), why isn’t he dead? To answer this question, think through the cascade of events from hypothalamus to effect.
Answer:
The absence of ADH is not too dangerous.
Explanation:
If there is no place for the storage of ADH hormone in the pituitary hormones, no death occur of the individual because ADH is related to the conserve of fluid in the blood. If this hormone fails to perform its function properly, it causes the body to retain too much water. This more water retention may cause you to feel heavier than normal, and less active so the person did not die due to the deficiency of this disease.
what supports and protects the chest cavity?
Answer: The bones of the chest — namely the rib cage and spine — protect vital organs from injury, and also provide structural support for the body.
Explanation:
why does paper bread tableyellow?
Answer:
yes
Explanation:
i did this and got it right.
Petrified wood is a beautiful material that forms over thousands of years. It occurs when forests get covered in rock and sediment. Which statement is true?
1. It is a mineral now that the Earth has changed it
2. It is not a mineral because the material was organic
3. It is a mineral as long as it displays the crystal structure
4. It is not a mineral because it has a definite composition
Answer:
4. It is not a mineral because it has a definite composition
Which is an abiotic factor that can be found in a rain forest ecosystem?
O A. Algae
O B. Oxygen
O C. Animals
O D. Bacteria
Which of the following activities is most likely to result in nutrient pollution?
a. cutting down trees
b. pouring motor oil down the drain
c. excess fertilizer use
d. none of the above
⚠️40 POINTS!!⚠️
As part of an adventure challenge, you find yourself dropped into a unknown place. There are birds and wolves. The air is
cold, and the ground is very hard. What biome have you landed in?
Answer: The Arctic Tundra.
Name the enzymatic reactions that turn a large substrate into two or more smaller products
Answer:
you have a question you can ask
Answer:
sugar
Explanation:
it among the amino acids