Answer:
A.Obtaining embryonic stem cells for use in therapy requires the destruction of embryos.
Explanation:
Research involving human embryonic stem cells is subject to ethical and political debate because these investigations involve the destruction of human embryos. Stem cells have a series of advantages in the field of organ/tissue regeneration, to investigate the etiology of degenerative diseases, therapeutic cell cloning, etc. However, in many countries, the moment where life begins is a controversial point, and therefore this issue must be defined clearly before research.
The statement, that is, obtaining stem cells for utilization in therapy requires the destruction of embryos would be an argument against the use of human embryonic stem cells for therapy.
These are the pluripotent stem cells obtained from the inner cell mass of a blastocyst, that is, an initial stage pre-implantation embryo.
Research on human embryonic stem cells is subject to political and ethical debate, as these researches comprise the destruction and killing of human embryos. In the field of organ or tissue regeneration, the stem cells possesses an array of merits, they can play an essential role in therapeutic cell cloning, and to determine the etiology of degenerative disease.
But in many countries, the instance when the beginning of life has taken place is an ethical issue, thus, there is a requirement of clearly defining the issue prior to performing any kind of research.
Thus, the correct answer is option A.
Find out more information about embryonic stem cells here:
https://brainly.com/question/26354941
Summarize the connection between the heart and the lungs. How are these organs working together to deliver oxygen to the body? Be sure to use the terms pulmonary and systemic in your answer.
Answer:
The blood goes through an oxygenation process that is carried out by the blood vessels, the heart and the lungs, so if any of these structures is affected the entire circulation system will be altered. The circulatory system is made up of two circulatory systems: the pulmonary that provides oxygen to the blood and the systemic that carries it to all the tissues of the body
Explanation:
The veins transport the deoxygenated blood to the heart pumps this blood back to the lungs, where it absorbs more oxygen. This oxygenated blood returns to the left side of the heart, which pumps it to the rest of the body through the arteries. Pulmonary circulation is a process in which the lungs, heart, veins and pulmonary arteries intervene, with the aim of oxygenate the blood.This system begins in the left ventricle of the heart, since this is the chamber through which it exits deoxygenated blood that has already fulfilled its function in all tissues of the body, to later reach the lungs through the blood vessels in the region.Systemic circulation is a long process that involves the chambers of the heart and blood vessels throughout the body, with the aim of carrying oxygenated blood to the tissues that are further away and thus allow all to function in the best way
The diversity of organisms ranges from simple prokaryotic cells to complex multicellular organisms A. True B. False
Answer: True
Explanation:
a chemical change occurs when which of the following is true
A) a substance is dissolved in water
B) you can separate the materials back to their original state
C) bibbles or fizz occur
D) light is reflected off the materials
Answer:
C) bubbles or fizz occurs
Explanation:
Chem. Change:
-energy is absorbed or released (temperature changes-hotter or colder), color changes, Gas production (bubbling, fizzing, or odor change; smoke).
-Formation of a Precipitate - a solid that separates from solution (won't dissolve)
-Irreversibility - not easily reversed.
spikes in the shoes of athlete (a) prevents skidding
(b) prevent slipping
(c) increase friction
(d) all of these
Answer:
Spikes are provided in the shoes of athletes so as to increase the friction and prevents from falling down.
so option C. is the answer
Answer:
spikes in the shoes of athlete increase friction.
Hope it helps :)
If b is a recessive gene, list the offspring that will exhibit or show the recessive trait.
Answer:
Not sure if theres supposed to be a pic or chart with this but if its any help, recessive traits only show when theres no dominant traits present and both parents need recessive genes
5. What is the response of an ectotherm, such as a lizard, when it encounters cold temperatures?
It will move to a warmer spot.
It will remain in the cold environment.
It will run toward the stimulus.
It will become hungry.
Answer:
It will move to a warmer spot.
Explanation:
An ectothermic animal, also known as a "cold-blooded" animal, is one that cannot regulate its body temperature, so its body temperature varies depending on the environment.
Many ectotherms live in environments that require little regulation, such as the ocean because the ambient temperature tends to stay the same.
two importance of proteins in human
Answer:
They play huge parts in metabolic reactions and the immune response.
Explanation:
Hope this helped!
Last one is social issues ... please help asap ❤️
Mitosis in Whitefish & Onion Roots
Answer:
The whitefish embryo is a good place to look at mitosis because these cells are rapidly dividing as the fish embryo is growing. The onion root is also a good place because this is the area where the plant is growing. Remember that when cells divide, each new cell needs an exact copy of the DNA in the parent cell.
Some basic principles of hereditary were established when Gregor Mendel crossed large numbers of pea plants and then
Answer:
Mapped the location of various genes
Explanation:
mathematical ratios of certain traits in offsprings
predict what would happen
to the biotic and abiotic factors in Fontanelle Forest and the surrounding
area ecosystem with the increase of deer.
Answer:
With increase of deer, there will be a decrease of producers.
Explanation:
Increasing of deer populations means decreasing of producers. As more and more deers are eating plants, the producer population will decrease. Thus, the producer population are in demand and deers will eventually need to fight for food with other deers–– this is known as competition, which is a biotic factor. An abiotic factor can be lack of oxygen once the producer population has been decreased due to the increase deer population.
11. Each of the dialysis tubes was labeled "10%". What does that mean?
12. Some tubes increased on mass, some had very little mass change, and others decreased. Using
knowledge of osmosis to explain this phenomenon. Be sure the explanation includes the words
hypertonic, hypotonic, and isotonic.
Answer: 11. 10% is the concentration of solutes, 12. Osmosis is the net movement of solvent through a membrane according to the concentration of the solution.
Explanation:
Osmosis is a phenomenon that explains the movement of a solvent through a semi-permeable membrane without expenditure of energy, where the movement is through simple diffusion.
The tonicity is the total concentration of all solutes in the solution. Then, when a solution has a few particles, it has a low osmolarity, while a solution with many particles has a hight osmolarity. But, when there are two solutions separated by a permeable membrane to water (and not to the solutes or particles) the solvent (water) will move from the lower osmolarity side to the higher osmolarity side (which means, water moves from a region of low concentration to a region of high concentration)
To compare osmolarity of solutions, we use the terms hypertonic, hypotonic and isotonic. This is done, for example, to compar the osmolarity of a cell with the osmolarity of the extracellular fluid around it. If the extracellular fluid has a lower concentration than the fluid inside the cell, it is hypotonic with respect to the cell. In this case, the solvent will go into the cell. If the extracellular fluid has a higher concentration than the fluid inside the cell, it is hypertonic and the solvent will leave the cell from the region of lower solute concentration to the region with more solutes. At last, an isotonic solution is when the extracellular fluid and the cell has the same osmolarity and there will be no net movement of water in or out of the cell.
Increasing on mass would mean that there has been a net movement of water into the bag, because the solution was hypotonic. A decreased on mass mean that there has been a net movement of water out of the bad, because the solution was hypertonic. And if there has been no change or a very little mass change, it means the solution was isotonic, the same osmolarity or concentration of solutes was found inside and outside the cell.
Taking into account the concepts of tonicity and osmolarity, we can explain the process of dialysis which is the process of separating molecules across a semi-permeable membrane in a solution by the difference in their osmotic pressure. It is a laboratory technique where a solution that has many types of different solutes, is put into a semi-permeable sealed dialysis bag, (such as a porous cellulose membrane). Then it is placed in a container with a different solution, or pure water (which has a lower osmolarity). Molecules such as DNA or proteins are larger than the diameter of the pore thereby they are retained within the dialysis bag. However, molecules that are small enough to pass through the pores, such as water, tend to move in or out of the dialysis bag in the direction of the lowest concentration. It is usually used to remove salt from a protein solution. Then, if a dyalisis tube is labeled as 10%, it means its solute concentration is 10% of to the total volume of the dialysis bag.
Which is the correct answer? I genuinely have no clue
is 3 249 because I add all of them together and I got 249
Answer:
(3) 249 grams
Explanation:
"The triple beam balance is used to measure masses very precisely; the reading error is 0.05 gram. With the pan empty, move the three sliders on the three beams to their leftmost positions, so that the balance reads zero. To find the mass of the object on the pan, simply add the numbers from the three beams." (Credit: SMU Physics Website)
This is how a triple beam balance works, so using this we can solve to find the mass of the object on the pan of balance. So we can add the 3 values.
200+40+9=249 grams
Technically the reading error is 0.05 g so I'm assuming you would subtract 0.05 g of some sort, but since there is no such decimal answer in the options given, we can conclude the correct answer would be number 3, 249 grams.
Consider this plant cell.
The organelles in a plant cell are labeled. Part E is a complex of vesicles and folded membranes within the cytoplasm.
How do minerals enter root cells from surrounding soil
Answer:
Absorption of mineral elements by the root from the soil takes place by active transport. The water film around the soil particles also contains a low concentration of mineral elements. These mineral elements move from soil into the root cells against the concentration gradient.
Answer:Root cells contain proton pumps that actively expel H+ ions stored in the vacuole of root cells
into the surrounding soil.
Explanation:
What is the cell nucleus?
Answer:
The nucleus in a cell is like a brain in a human. It is the power house. The nucleus tells everything in the cell what to do and when to do it.
Explanation:
Answer:the nucleus is an organelle found in eukaryotic cells. The nucleus hold most of the genetic material from the cell.
Explanation:
How would the cycle be different if there were no water on earth?
Answer:
What I expect would happen: First, there would be no clouds. Lack of clouds would mean there would be no rain and the average temperature of the Earth would increase, resulting in large areas of land becoming desert.
Explanation:
The water cycle is the process where water falls as rain, is transported via rivers and streams to lakes and oceans, evaporates into the sky, condenses into clouds, and falls as rain again. Here's a diagram:
water.usgs.gov
water.usgs.gov
So what would happen if there were no condensation stage?
The condensation stage is the one where water vapour gathers together into clouds (and when the clouds become heavy enough with vapour, release water as rain). So the first answer is that there would be no clouds.
Without clouds, I foresee a few things happening:
From clouds come rain. With no clouds, there would be no rain.
Clouds move moisture from lakes and oceans (where it evaporates up) to mountains and other places inland that spark rainfall. And so vast stretches of land would become desert.
Clouds reflect sunlight and help cool the Earth. With no clouds, the average temperature of the Earth would increase significantly.
And so to summarize what I expect would happen. First, there would be no clouds. Lack of clouds would mean there would be no rain and the average temperature of the Earth would increase, resulting in large areas of land becoming desert.
Explanation:
GOOD MORNING, GUYS PLEASE HELP ME WITH THIS - IM PAST THE DUE - ILL MARK U BRAINIEST TOO!!
Answer:
ummmmmm i would love to answer your question but theres no info
Explanation:
How does the force of friction affect the motion of objects?(2 points)
It causes the object to change direction.
It causes the object to create heat energy.
It causes the object to create kinetic energy.
It causes the object to slow down or stop.
Answer:
It causes the object to slow down or stop.
Explanation:
Friction is a unknown force pressing against another force slightly, making the moving object slow down.
Hope I help :)
What are the letters of the anticodon that should be in the three boxes labeled “Question #18” in the drawing below?
NEED HELP!!!
In a certain species of plant, flowers can be purple or white. When a plant with white flowers (P 1) is crossed with a plant with purple flowers (P 2), all offspring have purple flowers (F 1).
a. Determine which trait is dominant and recessive, and prove it with a Punnett square.
b. Show a Punnet square for a cross that allows F 1 to self-pllinate.
Answer:on part A,the white trait is recessive,and the purple trait is Dominant.
Explanation:
discuss the role of cell turgor to plants
Answer:
Turgor potential or pressure is potential also known as pressure potential takes place in a plant cell that exerts pressure on the walls of the plant cell due to the movement of water through osmosis.
Role of cell turgor:
1. regulates the shape of the cell.
2. It provides rigidity for the structure of cells
3. High turgor pressure opens stomatal pore low turgor pressure closes the stomata.
4. support to soft tissues like the parenchyma.
5. keeps leaves oriented to the surface available to light.
When land is cleared for agriculture or home construction, small isolated sections of the original habitat may remain. Explain how this reduction in habitat size and the isolation of small sections of habitat might lead to species endangerment.
Answer:
Species get endangered by the process of habitat fragmentation.
Explanation:
When the land is created for cultivation and home construction this represents land-use change and the destruction of the original habitat of diverse species thereby creating a reduction in size and isolation this is known as habitat fragmentation. That is the emergence of discontinuities that causes population fragmentation and ecosystem decay. This leads to species endangerment.Day and Night are caused by..
A. The sun rotating around the Earth
B. The sun rotating on its axis
C. The Earth rotating on its axis
D. The sun turning on and off each day like a light switch
Answer:
The Earth rotating on its axis
Answer:
c
Explanation:
option number c the earth rotating on its axis is the correct answer
hope this answer will help you
PLEASE HELP WILL GIVE BRAINLIEST
What is the source of bacteria which cause illness?
Question 2 options:
Rocks
Other bacteria
Soil
Miasma
Answer:
Other bacteria can BUT miasma causes a lot.
Explanation:
miasma causes illnesses like the cold, malaria, influenza etc...!
Hope this helped <3
HELP ASAP WILL MARK YOU BRAINLIEST
Answer:
THE DIRECTIONS SAY USE UR MAP
COULD U SEND THE MAP AND I WILL ANSWER THE QUESTION
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Explanation:
What could happen to the birds if the grasshoppers disappear? WHY?
Answer: The grasshoppers are the herbivorous insects. These insects feed on leaves and grasses. ... The population of predatory birds, snakes and other animals feed on grasshoppers. If the grasshoppers become suddenly extinct, then the population of higher organisms will also decline in number or even extinct.
Hope this helps....... Stay safe and have a Merry Christmas!!!!!!!!! :D
I also want to say something.... My account got deleted yesterday and i would like if you would add me.....
Answer:
The birds would either go hungry or have to find something else to eat.
Explanation:
Grasshoppers are on most birds' diet so if the grasshoppers suddenly dissapeared, a lot of birds would be without a food source. So, those birds would either go hungry with nothing to eat or a meal substitute.
help anybody pleaseeee and number them <3 happy holidays !!!!
Answer:
It's 1
Explanation:
Ionic bonding is from metal to metal and happy holidays to you too! <3
Viruses come in many different shapes, but they all have what two components
in common?
*
Answer:
Virus Structure. All viruses contain the following two components: a nucleic acid genome and a protein capsid that covers the genome. Together this is called the nucleocapsid. In addition, many animal viruses contain a lipid envelope.
Explanation:
Brainliest please?
I need help asap! Will mark brainliest if correct!!