what is the function of RBC
Answer:
When a red blood cell is placed in a hypertonic solution, it contracts as water is drawn out of the cell and into the surrounding solution. If the same blood cell is placed in a hypotonic solution, the blood cell grows in size. Blood cells in isotonic solutions do not shrink or swell.
The reason that blood cells change in size when placed in a solution with different salt concentration is due to the osmosis process. Osmosis causes solutions with high concentrations of salt to draw water from areas with low concentrations of salt.
There are some exceptions to this phenomenon. Blood cells can draw water and explode when placed in hypertonic solution on some special occasions. Some diseases affect the structural integrity of blood cells. Also, when human blood cells are exposed to temperatures close to freezing, they can draw water and explode.
Osmosis is an important phenomenon for living systems. The amount of salt in a given solution exhibits a tendency to diffuse through the environment, eventually resulting in equilibrium. In addition to blood cells, the kidneys function through the use of osmotic principles. The kidneys filter an animal's blood to remove excess salt and balance the amount of water
Answer:
It carry oxygen from our lungs to the rest of our bodies. they make the return trip, taking carbondioxide back to our lungs to be exhaled
Genetic information is stored and transmitted within
A.nucleic acids.
B. proteins.
C.amino acids.
D.sugars.
Shameeka is studying for an exam. She took the notes below about calcium and chlorine, which are known to form ionic bonds.
Calcium, which is a metal, donates 2 electrons to chlorine.
The individual calcium atoms become ions with a negative 2 charge.
The bond between calcium and chlorine makes the atoms stable.
Calcium and chlorine attract each other.
Which best describes Shameeka’s error?
Calcium is a metal, so it donates protons, not electrons.
The individual calcium atom has a positive, not negative, 2 charge.
The bond formed makes the atoms unstable, not stable.
Calcium and chlorine repel, not attract, each other.
Answer:
The individual calcium atom has a positive, not negative, 2 charge.
Explanation:
The error in her study is in the second line of her note which suggests that the individual calcium atoms becomes ions with a negative 2 charge.
When atom loses electrons, it has a net positive charge on it. Not a negative charge. This is because the number of protons is now more than electrons. Therefore, a net charge on the calcium atom will be a positive one. This is her mistake.Answer:
B) The individual calcium atom has a positive, not negative, 2 charge.
Explanation:
Hope this helps. Have a good day!
How is the age distribution pattern of the Hawaiian Islands - Emperor Seamount chain explained by the position of the Hawaiian hotspot? Explain using evidence and reasoning.
Answer:
Find the explanation below.
Explanation:
The Hawaiian Islands is a series of islands positioned in what looks like a chain, which increases in age as one moves northwest. The Hawaiian hotspot was formed as a result of the collision of the tectonic plates in the outer part of the earth which caused the rise of a volcano, and which in turn gave off magma which came to rest on a seafloor. That eruption on the seafloor is the hotspot.
This hotspot remains unmovable while the tectonic plates are in constant motion around the hotspot, giving rise to further Islands. This explains the age distribution pattern of the Hawaiian islands which arrived at different times making some older than the others.
Describe your diagnosis for the patient. How did the chlorine gas affect concentration difference, diffusion distance, and surface area in the patient’s lungs? Explain how these affected the diffusion rate.
The concentration difference and surface area lead to decrease but the diffusion distance increases due to application of chlorine.
The difference in the concentration of a substance between two regions is known as the concentration gradient.
Surface area is the total area that the surface of the object occupies.
Diffusion rate is defined as the change in the quantity of diffusing molecules inside the cell in a specific period of time.
The chlorine gas greatly affected the concentration difference because it lowers the value. The gas increases the diffusion distance but decreases the surface area of the patient's lungs. The decrease in the concentration difference leads to slower the diffusion rate.
It is because there is less difference in the concentration of both regions i.e. lungs and the surrounding atmosphere and when there is equal amount on both sides the diffusion of gas molecules stopped so we can say that decrease occur in the concentration difference and surface area but increase occur in the diffusion distance
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Que:
Which of these must occur during S phase of the cell cycle so that two daughter
cells can be produced during M phase?
Explanation:
the answer is d, the DNA must be replicated.
Answer:
d: the DNA must be replicated
I want to know know know know
what is love ☕
Answer:
Love = Silence
Explanation:
Because sometime you can't tell someone how you feel so you have to keep your love silenced.
What is the correct answer?
Answer:
the cart will move right
EXPLANATIONS
BECAUSE OF MORE FORCE
Which example best represents the use of materials science in the growth of technology?
Answer:
I dont see the examples or a picture??
Explanation:
please help me, i dont like this
Answer:
The answer is true
Explanation:
I looked it up.
Which of the following best defines a gene pool?
a. the sum of all genetic traits in a population’s individuals at a given time
b. any movement of genes from one population to another
c. any movement of organisms from one environment to another
d. the random change in the frequency of an allele in a population
The correct answer is : A) The sum of all genetic traits in a population's individuals at a given time.
Answer:
A
Explanation:
Just took the test
A mixture in which different materials are easily identified is____
Answer:
heterogenous mixture
Explanation:
What is the correct answer?
Answer:
i think the answer is it can change the mass of something
Answer:
Yh I was also gonna say dat to
which of the following is not an acquired trait of a human
Answer:
Acquired traits develop during life (not in your DNA) and answers are below:
Explanation:
Examples:
-Things you learned
(riding a bike, reading, writing, painting, drawing, cooking, school subjects, etc.)
-Things that happened to you
(short hair, broken bone, plastic surgery, dyed hair, etc.)
Hope this helps!
24. What is the total magnification of this compound microscope using the low power objective
lens?
Answer: The total magnification of a low power objective lens combined with a 10x eyepiece lens is 100x magnification, giving you a closer view of the slide than a scanning objective lens without getting too close for general viewing purposes.
Explanation:
Which of the following is the term for the dense area of the nucleus where ribosome assembly begins?
a. chloroplast
b.Golgi apparatus
c.vacuole
d.nucleolus
Answer: the answer is d
Explanation: most dense region
Match the agency with the type of event over which it takes jurisdiction.
1. Bureau of Land Management
2. Food and Drug Administration
3. United States Department of Agriculture
A wildfire is destroying national forests in California.
A farmer in Kansas wants to obtain energy from a wind farm on federal land.
An outbreak of mad cow disease is reported.
Answer:
A wildfire is destroying national forests in California.-3
A farmer in Kansas wants to obtain energy from a wind farm on federal land.-1
An outbreak of mad cow disease is reported.-2
Explanation:
Hope this helps <3
~Grey
Answer:
3 A wildfire destroying national forests in California
2 an outbreak of mad cow disease is reported
1 a farmer in Kansas want to obtain energy from a wind farm on federal land
Explanation: I got it right on a quiz that I did in the 11th grade your welcome and plz give me the Brainiest tanks
Which of these is NOT true about the outer core? HURRY! MARK BRAINLIEST
Question 2 options:
It has a higher temperature than the inner core.
It is mostly made up of iron and nickel.
It is mostly liquid.
Atoms within it form a powerful magnetic field.
Answer:
It has a higher temperature than the inner core.
Explanation:
The inner core is indeed hotter than the outer core, is mostly composed of liquid iron and nickel, and magnetism in the outer core is about 50 times stronger than it is on the surface.
is Organic Really Better? Healthy Food or Trendy Scam?
Answer:
It is better
Explanation:
It tastes better :)
And it has no pesticides
Answer:
♡ hi darling ♡
- Organic is great. Infact, I actually eat organic food for a living. Even the oreos are good, they taste better and it's better for you tbh. It helps you be more healthier but your still enjoying it because it's not like celery all day or something.
have a great day.
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Match the following enzymes involved in DNA replication with their functions.
a. DNA ligase
b. DNA polymerase
c. DNA gyrase
d. helicase
Answer:
DNA ligase is an enzyme which can connect two strands of DNA together by forming a bond between the phosphate group of one strand and the deoxyribose group on another.
DNA polymerase is an enzyme that synthesizes DNA molecules from deoxyribonucleotides, which are the building blocks of DNA. The enzymes play an essential role in DNA replication, usually working in pairs to produce two matching DNA stranges from a single DNA molecule.
DNA gyrase is an essential bacterial enzyme that catalyzes the ATP-dependent negative super-coiling of double-stranded closed-circular DNA
Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes. There are DNA and RNA helicases. DNA helicases are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied.
Explanation:
DNA ligase seals the fragment, DNA polymerase adds a new nucleotide, DNA gyrase unwinds the DNA, and helicase makes a dent in double helix.
What is DNA replication?DNA replication is the physiological method that generates two identical replicas of DNA from a single original DNA molecule in molecular biology.
DNA replication takes place in all living organisms and is the most important component of biological inheritance.
Helicase, primase, DNA polymerase, and ligase are the four main enzymes that aid in DNA replication.
Many proteins and enzymes play a role in DNA replication, including: Topoisomerase: This enzyme relaxes the super-coiled nature of DNA. Helicase: Helicase is a protein that separates the two strands of DNA at the replication fork.
The fragment is sealed by DNA ligase, a new nucleotide is added by DNA polymerase, the DNA is unwound by DNA gyrase, and a dent in the double helix is made by helicase.
Thus, this can be the match for the given scenario.
For more details regarding DNA replication, visit:
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Over the course of an individual's life, personality is _________
A. remarkably stable in the long term
B. constantly changing between stages
C. impossible to reliably measure
D. capable of both change and stability
Answer:
On ed2020 its D
Explanation:
In individual's life, personality is capable to change and also being stable over the course of development, hence option d is correct.
What is personality?At other words, rather than a progressive growth, development happens in different levels. The term "development" has a favorable meaning, its meaning varies depending on how it is used.
Typically, the word "development" indicates growth, it refers to a time when things transform and develop. Additionally, it tends to encourage people to reach their maximum potential.
Therefore, it may also refer to a different interpretation of an earlier occurrence, personality can change or be stable, hence option d is correct.
Learn more about personality, here:
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What can you infer from the following example? “Long extensions on nerve cells allow these cells to relay messages to other cells.”
A- cells come from preexisting cells
B- cell shape helps cells perform specific functions
C- all organisms are made up of more than one cell
Answer:
The right answer is B cos cells shape helps them perform specific functions
Explanation:
Plz give me brainiest
How do I calculate the weight/force?
Answer:
Weight = Mass X Gravity w=mg
Explanation:
I need a Description of the uterus for scientific reasons. But fr pls help me with a description
Waves and currents help to
form beaches
Answer:
ye
Explanation:
¿Como se le denomina a la estructura formada por adición de vesículas procedentes de aparato de golgi que permiten la aceptación durante la citocinesis en las células vegetales?
Answer:
La estructura formada por adición de vesículas procedentes del aparato de golgi que permiten la aceptación durante la citocinesis en las células vegetales se denomina Fragmoplasto o Tabique.
Explanation:
El fragmoplasto o tabique es una estructura que no se encontrará en las células animales, sino vegetales. Viene a ser una especie de "puente" entre la pared celular que luego se dividirá, dando lugar a dos células.
Durante la anafase y telofase los distintos filamentos y microfilamentos del fragmoplasto se acumulan de manera opuesta para dar paso a la nueva pared celular.
A diferencia de la citocinesis en las células animales que se da por un mecanismo de estrangulación, en las células vegetales se logra por tabicación.
Which of the following best describes the purpose of cellular reproduction?
A) to synthesize new adequate ATP from ADP
B) to replaces dying cells with new cells
C) to ensure that chromosomes contain enough DNA in the nucleus
D) to provide enough oxygen for cells to function properly
Answer:
i think b
Explanation:
cellular reproduction is to reproduce a preexisting cell
How is the phrase, “you are what you eat,” related to metabolism? Explain what that means.
Answer:
Because when you metabolize something you adsorb it's nutrients.
Explanation:
Is self-explanatory. Look at the answer...
how do central nervous system and the peripheral nervous system work together to control the body?
15. Each of the following is a density-dependent limiting factor EXCEPT
A. crowding
B. competition
C. disease
D. seasonal cycles
Answer: d, seasonal cycles
Explanation: it doesn't affect the population.