Which of the following structures is known as the power house or power generator of a cell?
оооо
mitochondria
rough ER
smooth ER
cytoskeleton
which of the following could explain why the percentage of brown-shelled insects decreased from year 3 to year 4
Answer:
I feel like you need a picture or graph for someone to answer this question. Being helpful, I'll guess some possible answers.
Nutrient or water shortages
Environment issues
Disease
Explanation:
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Answer:
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Explanation:
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`4\left(y-5\right)`=
Answer: This makes no sense. message me for more help though.
Explanation:
Why the body needs more water after exercising/performing rigorous activity
Answer:
Sweat and dehydration. When you exercise, your body sweats as it tries to return to its optimal temperature. As sweat evaporates from your skin, it removes heat from the body, but you also lose body fluid. So, you need to drink fluid during exercise to replace the fluids you lose when you sweat.
Fluids keep your body hydrated; without them your body won’t function at its best.
If you don’t drink enough fluid:
Your body temperature and heart rate may rise. That’s because when the total amount of water in your body is below normal level (hypohydration) your body can’t properly regulate heat. You may feel more fatigued than usual. You may not be able to think clearly – your motor control, decision-making abilities and concentration may be impaired. Your body’s functions may slow down – this includes gastric emptying, so you may feel uncomfortable in your stomach. Your performance in sport or exercise may not be as good as it could be. The impact is even worse when you’re active and dehydrated in hot conditions.What hydration means :The amount of water you need depends on a range of factors, such as climatic conditions, your health, your clothing, your exercise intensity and duration. So, being well hydrated will differ per person and situation.
As a guide, you probably need more fluid if:
you sweat heavily you have certain medical conditions, such as diabetes or heart disease you have cystic fibrosis, which means you have a high concentration of sodium in your sweat you are using a medication that can act as a diuretic, causing your body to lose more fluid you have a bigger body size you are fit (because fitter people tend to sweat more and earlier in their exercise) you are doing vigorous exercise you are active in hot or humid conditions.
Thirst isn’t the best indicator that you need to drink. In fact, if you feel thirsty, you are probably already dehydrated.
A good test of dehydration is the colour of your urine. If it’s pale and clear it means you’re well hydrated. The darker it is, the more fluid you need to drink.
Another sign of dehydration is a lack of sweat during vigorous activity, when you expect to sweat. No sweating is a sign that you’re both dehydrated and probably suffering heat exhaustion.
What dehydration means :
Dehydration occurs when your body’s water content is too low. Here are some body signals that indicate you haven’t had enough fluid:
headaches fatigue mood changes slow reaction times dry nasal passages dry or cracked lips dark coloured urine muscle cramps weakness confusion hallucinations.If you experience any of these symptoms, you may need to increase your fluid intake.
If you don’t rehydrate, your physical and mental performance is likely to be affected. A loss of fluid equal to two per cent of body mass (for example a 1.4 kg loss in a 70 kg person) is enough to cause a detectable decrease in performance. A loss of fluid equal to more than two per cent means you risk nausea, vomiting, diarrhoea and other gastro-intestinal problems.
It’s not possible to train your body to handle dehydration, so don’t delay fluid replacement to ‘get used to dehydration’. When you need water, you need it.
Sweat and dehydration
When you exercise, your body sweats as it tries to return to its optimal temperature. As sweat evaporates from your skin, it removes heat from the body, but you also lose body fluid.
So, you need to drink fluid during exercise to replace the fluids you lose when you sweat. That way, you’ll reduce the risk of heat stress, maintain normal body function, and maintain performance levels. The general rule is: if you’re sweating, you need to be drinking fluids.
Over-hydration, in rare but severe cases, can lead to death. To avoid this, it can be useful to know your sweat rate. That way, you can work out exactly how much you should be drinking. Or, talk to your GP or an accredited sports dietitian for a fluids plan.
To work out your sweat rate:
Empty your bladder. Weigh yourself in minimal clothing, as close to the start of exercise as possible (this is your initial weight). Record the ambient temperature. Do your exercise session. Record the volume of any fluid you consume during your exercise session (fluid). Estimate (or measure!) urine losses during your exercise session (urine). Weigh yourself again at the end of your session, in the same clothing as before - be sure to towel off any excess sweat from your body first (this is your final weight). Your weight change during exercise, plus any fluids consumed, minus any urine losses, reflects your total fluid loss for that session. To work this out: Subtract your final weight from your initial weight. Add the weight of fluid (in kg) that you consumed while exercising. Subtract the weight of fluid (in kg) you lost through urination. To make this into an hourly rate, divide it by the number of hours you spent exercising.
Sweat rate (L/hr) = [initial weight (kg) – final weight (kg) + fluid (kg*) – urine (kg)] / time (hrs)
(*One litre of water or urine is equivalent to one kilogram.)
Remember, this is your sweat rate when exercising at a particular ambient temperature. Your sweat rate will change with the temperature, so it can be useful to measure your sweat rate at different times of the year.
A solution has a pH of 2. Which best describes the solution?
…answer: a strong acid
Answer:
Yes
Explanation:
Lower pH a stronger acid.
Explain how a cell uses mitochondria, cell membrane, lysosomes, and vacuoles to make energy.
Answer:
How does the cell membrane and mitochondria work together to make energy?
Explanation:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
which muscles are also known as the smooth muscles
Answer:
involuntary muscle
Explanation:
Involuntary muscles are those that cannot be controlled by will or consciousness and are frequently associated with organs that contract and relax slowly and regularly. Because there are no striations when viewed under a microscope, involuntary muscles are also known as smooth muscles or non-striated muscles.
Which type of land has less percolation?\
Farmland
Forests
Grassland
Urban areas
Answer:
cExplanation:
How long do scientists estimate that the sea has been at its current level?
250 years
2,500 years
25,000 years
250,000 years
Answer:
250,000
Explanation:
Answer:
A. 250 years
Explanation:
NASA measures sea level around the globe using satellites. The Jason-3 satellite uses radio waves and other instruments to measure the height of the ocean's surface – also known as sea level. It does this for the entire Earth every 10 days, studying how global sea level is changing over time.
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you have to always act your age and actually ask a question
Why do organisms perform fermentation? in short and simple plsss
Answer: Because muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration.
Oceanic crust is best described as _______.
a.
thin and young
b.
continuously replenished
c.
a majority of Earth’s crust
d.
all of the above
Answer:
d. all of the above
Explanation:
correct ed2022
Which definition is the best for “semipermeable membrane”?
It is a barrier that prevents materials from moving from one side to the other.
It is a barrier that allows materials to move freely from one side to the other.
It is a barrier with tiny openings that let some, but not all, materials pass through.
It is a barrier that helps materials move from one side to the other.
it is a barrier with tiny openings that lets some ,but not all, matérials pass through
Answer:
C
Explanation:
I created a list of reasons for a priest to work for me, but he still doesn't understand. Any advice?
Answer:
No
Explanation:
Do what you need
Question A mouse population that is originally white in color becoming darker in color after several generations is an example of ________ selection.
A mouse population that is originally white in color becoming darker in color after several generations is an example of natural selection.
What do you mean by natural selection?Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways.
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways.
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three benefits attributed to all psychotherapies are:
Answer:
hope for demoralized people, new perspective, and a healthy relations
Environmental science can include which of the following disciplines?
Political Science
Chemistry
Ethics
Botany
Answer:
I'd say Chemistry! Hope this helps! :)
Explanation:
Environmental science can include which of the following disciplines Botany.
What is environmental science?"The term environmental science refers to a grouping of scientific disciplines that are all concerned with the physical, chemical and biological characteristics of the surroundings in which organisms live."
What is botany?"Botany, branch of biology that deals with the study of plants, including their structure, properties, and biochemical processes."
What are the principles of environmental science?Four basic principles of environmental science are put forward in this paper:
systematic principle of environment,principle of environmental capacity,symbiosis principle of human between environment,entropy principle.To know more about environmental science here https://brainly.com/question/4593618
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Which equation represents the photosynthesis process?
a
CO2 + Glucose ----> H2O + Sunlight + O2
b
CO2 + H2O + Sunlight ----> Glucose + O2
c
CO2 + H2O ----> Glucose + O2
d
Glucose ----> CO2 + Alcohol + ATP
Answer:
C
Explanation:
Carbon Dioxide + Water -> Oxygen + Glucose
What is the function of the organelles that are labeled F? plant cell
Answer:
endoplasmic reticulum ( ER)
Explanation:
edg im guessing
In humans, freckles are encoded by a dominant allele. A woman is heterozygous for freckles. According to the law of segregation, allele pairs separate during gamete formation and then randomly unite during fertilization. Which of the following would apply to this woman's child?
The child having an equal chance of inheriting the dominant allele or the
recessive allele for freckles from her mother is what applies.
The law of segregation by Mendel states that diploid organisms have a pair
of alleles and are passed to their offspring at random.
The woman being heterozygous means she has the dominant and recessive
allele present. Due to the law of segregation stating the alleles are passed
at random to the offspring, the child will have an equal chance of inheriting
the dominant allele or the recessive allele for freckles .
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The color that we see depends on the color of light that is shined on the object and the color of light that is _______________ by the object.
Answer:
Reflected
Explanation:
that's what I remember in science XD
Answer:
i think its reflected could be wrong tho so dont be mad if it is
Explanation:
Can someone plz help me? :(
Answer:
D - design a device that can throw an object at least 15 metres
Answer:
D. Design a device that can throw an object at least 15 meters.
Explanation:
First of all, the object shown as you may be able to tell, look like a catapult. It also shows the top end of it holding a ball, getting ready to launch it. It then shows a line of the ball traveling after being launched. The balls land of the ground at 15 meters. From this iformation you look at the options:
A. Design an object that is 10 meters tall.
No, because 10 meter is just the highest point of the ball being launched.
B. Design a vehicle that can travel across a 10-meter feild.
No, because it is the ball that is traveling, not the catapult.
C is about a vehicle traveling again, so eliminate that too.
D. Design a device that can throw an object at least 15 meters.
This describes exactly what we soo in the picture. Meaning D is correct.
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List three limitations for measuring cell size
Answer:
Cell size is limited by the cell's surface- area- to - volume ratio
the kidneys can permanently remove substances that affect ph balance by secreting them into the ____________ .
Chlorophyll, the primary photosynthetic pigment, emits light in the red region of the visible spectrum. The presence of chlorophyll correlates with photosynthetic capacity. Under a fluorescent microscope, which part of a leaf do you think would fluoresce in the red region of the spectrum?
Answer:
The mesophyll is the main site of photosynthesis.
Explanation:
Because scientists are unable to predict when and precisely where an earthquake will occur, the government has a duty to issue building codes to ensure that all structures can withstand earthquakes. Agree and disagree
Scientists are unable to predict when and where the earthquake will occur precisely, so the government has a duty to issue building codes to ensure that all the structures can withstand earthquakes. I agree with the given statement.
What is Earthquake?An earthquake is a natural disaster which happens when the two blocks of the earth suddenly slip past each other, this causes the tectonic plates to move. The surface where the blocks slip is called the fault or fault plane.
Earthquake damage the buildings and other infrastructure completely which can be fatal for the people living in that area. So, to save life of people government has the duty to issue the buildings code to ensure that all the structures can withstand earthquake.
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How does sympatric speciation differ from allopatric speciation?
Symaptric speciation is the formation of new species in populations that live in the same geographic area, while allopatric speciation occurs when the population is separated by a geographcial area. So, according to this: The difference between the sympatric speciation and the allopatric speciation is that sympatric speciation involves a behavioral barrier, while allopatric speciation involves a physical barrier.
A blood sample consists of dead cells that are breaking apart into their basic molecular building blocks. What type of molecule is best suited for identifying the specimen
Answer:
D N A!!!!
Explanation:
have a great day on your assignment
The oldest rocks on earth date from about 4.2 billion years ago. What does this suggest about the interval between 4.6 billion years ago, when the earth started to form, and 4.2 billion years ago ?
Answer:
4.6 billion hehehehhehe