Answer: These stem cells are manipulated to specialize into specific types of cells, such as heart muscle cells, blood cells or nerve cells. The specialized cells can then be implanted into a person. For example, if the person has heart disease, the cells could be injected into the heart muscle.
Explanation: Describe the three methods for harvesting stem cells, for each method, explain the benefits of the method and the ethical concerns related to the method
Stem cells are specialized cells that can proliferate into many types of cells lineages. Umbilical cord blood collection, bone marrow harvesting and dental pulp collection are the methods.
What are stem cells harvest methods?Stem cells can be collected from the blood and the tissues of the umbilical cord of the baby born and is an easy method that collects the cells from the umbilical cord and the placenta for future use.
The cells and the tissues are chopped and kept in the low temperatures that include the Mesenchymal stem cells in it. They are beneficial as they can treat cancers, anaemia etc. There are not many ethical issues related to umbilical cord use.
Stem cells can be derived from the bone marrow as this is the site where they originate from. The method uses the removal of the bone marrow from the pelvic bones and subjects them to the removal of the stem cells from the blood.
Stem cells from the bone marrow are used for the replacement of damaged cells. The use of the bone marrow and using human lives is the ethical issue concerned with bone marrow based stem cells.
The dental pulp collection method of the stem cells uses the method of deriving cells from the teeth region and are a source of the bone and the mesenchymal cells.
DPSCs can be used for cell banking and are the method that has no ethical concerns. It is simple can be done in dental routines.
Therefore, umbilical cord, dental pulp and bone marrow are the stem cells collection methods.
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Which of the following is a correct association?
Answer:
The first one
Explanation:
because it has the most words on their.
The correct association is option a.The cell synthesises proteins and organelles in the G2 phase (also known as the "Gap 2 phase") of the cell cycle in order to prepare for cell division.
The cell enters the G2 phase following DNA replication, which takes place during the S phase. In order to manufacture the elements required for cell division, the cell continues to expand and goes through further protein synthesis during this phase. These proteins play a role in the development of the mitotic spindle, control of cell cycle checkpoints, and cytoskeleton organisation.
The cell also creates organelles like the mitochondria and endoplasmic reticulum to make sure there will be enough energy and cellular building blocks for the impending division in the phase.
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Choose ALL of the correct answers.
Which of the following must be true in order for natural selection to occur?
Group of answer choices
There must be variation in traits in the population
The trait must cause the individual to evolve
The trait must have no other advantage in fitness
The trait must be for the good of the species
The trait must be heritable
The trait must advance the goal of evolution
Answer:
For natural selection to occur, it is true that there must be genetic variation in the population.
Explanation:
According to evolution, natural selection implies the changes that occur in the genotype of a species, due to the effect of environmental factors, and which guarantee its survival through adaptive evolution.
For natural selection to occur, three fundamental conditions must exist:
A trait that can be inherited from one generation to another.
The trait is subject to variability between subjects of the same species.
Genetic variability can determine the possibility of reproductive success and survival.
Therefore, a necessary factor for natural selection to occur is that genetic variability exists in the population.
For natural selection to occur :-
There must be variation in traits in the population.The trait must cause the individual to evolve.The trait must be for the good of the species.The trait must be heritable.The trait must advance the goal of evolution.What is Evolution?It is the change in the characteristics of a species over several generation.It relies on the process of natural selection.
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Select the TRUE statement about a resting neuron. a.) The cytoplasm side of a neuron is positively charged while the outside of the neuron has no charge. b.) The cytoplasm side of a neuron is negatively charged while the outside of the neuron is also negatively charged. c.) The cytoplasm side of a neuron is more negative than the outside of the neuron. d.) The cytoplasm side of a neuron is more positive than the outside of the neuron.
Given what we know about the nervous system and resting neurons, we can confirm the cytoplasm side of a resting neuron is more negative than the outside of the neuron.
What is a neuron?Neurons are specialized cells that make up the nervous system in the body. Their primary function is to act as messengers, delivering information in the form of electrical impulses and neurotransmitters. These neurons work using rapid shifts in membrane potentials.In order to do this, the starting value or resting point of the membrane is negatively charged.Therefore, we can confirm that since neurons function using shifts in membrane potentials, the starting point or resting form of a neuron has a negatively charged membrane, meaning that the cytoplasm side of a resting neuron is more negative than the outside of the neuron.
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What is the location of a volcano that forms in the middle of the ocean called?
A) seismic wave
B) hotspot
C) fault line
D) earthquake
Answer: Answer is B a hot spot
Explanation:
Which of these is a compound?
Answer:
your anwser would be sugar please mark brainliest
Explanation:
Answer:
I think it's sugar.
Explanation:
It is formed by a combination of three atoms: carbon, hydrogen and oxygen.
4. Don't
fishing when it's windy.
b) play
c) go
a) do
d) eat
Answer:
Go
Explanation:
Dont go fishing when its windy
Which organelle is only
found in plant cells?
A. chloroplasts
B. cell membrane
C. nucleus
D. mitochondria
Answer:
Chloroplasts Is the answer you are looking for.
Hope this helps!
Could there be winds without differential heating? Using evidence from Unit 5 explain what differential heating is and whether this effects the earth’s global wind patterns.
HELPPP PLEASE SITE EVIDENCE (WILL MARK BRAINLIEST)!!!!!!!!
Differential heating is responsible for the wind patterns across the globe.
Differential heating is defined as the difference in heating of air on the land versus water. Sea breezes occur when land heats up faster than water which rises and creates a low pressure system. The high pressure air from the sea influxes is responsible for the creation of a sea breeze.
Unequal heating of the Earth's surface is responsible for the formation of large global wind patterns. Warm air rises at the equator and moves toward the poles while on the other hand, the cooler air rises at the poles and moves back toward the equator so in this way the earth’s global wind patterns occurs so we can say that differential heating is responsible for the wind patterns across the globe.
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Name one observation in a urine culture that would result in a rejection of the specimen and
culture.
Answer:
What are 3 things that can be tested in a urinalysis to look for abnormalities?
Things the dipstick test can check for include:
Acidity, or pH. If the acid is abnormal, you could have kidney stones, a urinary tract infection (UTI), or another condition.
Protein. This can be a sign your kidneys aren't working right. ...
Glucose. ...
White blood cells. ...
Nitrites. ...
Bilirubin. ...
Blood in your urine.
Explanation:
Select ALL the correct answers.
A mother has blood type A and her son has blood type O. Which blood types are possible for the father?
A
O
AB
B
Answer: Blood types O, A, and B are possible for the father.
Explanation: Since the mother has type A blood, there are two possible genotypes that she can have: AA or AO. Since her son has type O blood, he only has one genotype: OO.
For blood types,
Type A - AA or AO
Type AB - AB
Type B - BB or BO
Type O - OO
* A and B are dominant over O.
Now we have to do crosses between the mother and the father:
AA mother with AB father: child with type AA or type AB blood
AO mother with AB father: child with type AA, AO, AB, or BO blood
AA mother with OO father: child with AO blood
AO mother with OO father: child with AO or OO blood
AA mother with AA father: child with type AA blood
AA mother with AO father: child with type AA or AO blood
AO mother with AA father: child with type AA or AO blood
AO mother with AO father: child with type AA, AO, or OO blood
AA mother with BB father: child with type AB blood
AA mother with BO father: child with AB or AO blood
AO mother with BB father: child with AB or BO blood
AO mother with BO father: child with AB, AO, BO, or OO blood
The father can have blood types O, A, or B.
The ___ is a short loop from the heart to the lungs and back again. HELP
Answer:
pulmonary circulation
Explanation:
it's a short loop from the heart to the lungs back again
How do you think scientists figure out the life cycle of a star
Answer:
space
Explanation:
they figured it out going to space and since a star is a small peice of the sun they can't touch it it's impossible without getting heat burns or dying so they ither observe a star using a telescope or went to space for days
HELP!!!!!
If one strand of DNA has the nitrogenous bases: AGT CTC TAG AGC TAT CGT GCG, what is the order of nitrogenous bases on the complementary DNA strand?
Answer:
Hey there you got this! remember that A -T and C-G for the complement strand. Don't forget the 5' to 3'.
Usualy teachers if they don't specificy then the one you are given is 5' to 3' which means the mone you make lokking left to right is 3' to 5'. Make sure to choose the correct answer choice that looks like this.
Which is the advantage of water's heat capacity?
Answer:
helps regulate the rate at which air changes temperature
narvez 5. Everyone in Dobby's family has a long nose and they brag that they are from a purebred line. Viola has a stubby nose. Draw a punnett square to determine the possible types of noses their children could have had. (Use the genotypes from #2) a. List the possible genotypes and phenotypes for their children. b. What are the chances of a child with a long nose? out of or % c. What are the chances of a child with a stubby nose? out of st or__% d. Would their children be considered purebred like Dobby? Explain:
Assuming a single diallelic gene coding for the trait and expressing complete dominance, the phenotypes, genotypes, and probabilities of getting each of them vary according to the parentals' genotypes. See the options below.
---------------------------------
Since I do not have the genotypes from #2, I will provide different potential scenarios for this question.
I advise you to check on them and see which one matches the genotype from #2.
Let us assume a single diallelic gene is coding for the trait and expresses complete dominance.
SCENARIO 1 ⇒ long nose is the dominant traitLet us say that
L is the dominant allele and codes for long nosel is the recessive allele and codes for stubby noseSince long nose is dominant over stubby nose
LL and Ll ⇒ long nosell ⇒ stubby noseIf Dobby comes from a purebred family and has long nose, his genotype must be LL.
And if Viola has stubbi nose, her genotype must be ll.
Cross 1
Parentals) LL x ll
Gametes) L L l l
Punnett square) L L
l Ll Ll
l Ll Ll
F1) Genotype ⇒ 100% heter0zyg0us Ll
Phenotype ⇒ 100% long-nosed
There is 100% chances for a child to have a long noseThere is 0% chances for a child to have a stubby noseThese children are not purebred**********
SCENARIO 2 ⇒ Stubby nose is the dominant traitLet us say that
S is the dominant allele and codes for stubby noses is the recessive allele and codes for long noseSince stubby nose is dominant over long nose
SS and Ss ⇒ stubby nosess ⇒ long noseIf Dobby comes from a purebred family and has long nose, his genotype must be ss.
And if Viola has stubbi nose, her genotype must be either SS or Ss.
There are two possible crosses.
Cross 1 : Violet is h0m0zyg0us dominant SS
Parentals) SS x ss
Gametes) S S s s
Punnett square) S S
s Ss Ss
s Ss Ss
F1) Genotype ⇒ 100% heter0zyg0us Ss
Phenotype ⇒ 100% stubby-nosed
There is 100% chances for a child to have a stubby noseThere is 0% chances for a child to have a long noseThese children are not purebredCross 2: Violet is heter0zyg0us, Ss
Parentals) Ss x ss
Gametes) S s s s
Punnett square) S s
s Ss ss
s Ss ss
F1) Genotype ⇒ 50% heter0zyg0us Ss and 50% h0m0zyg0us recessive ss
Phenotype ⇒ 50% stubby-nosed and 50% long-nosed
There is 50% chances for a child to have a stubby noseThere is 50% chances for a child to have a long noseThese children are not purebred----------------------------
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1. Distinguish living beings from non-living things on the basis of the following
A. reproduction
B.energy production
C. growth
Answer:
reproduction. plants undergo mitotic division while animals meiotic division
energy reproduction. plants produce or manufacture their own food through photosynthesis while animals depend on plants that's they convert the energy from plants (carbohydrates) into proteins vitamins etc
growth. growth in plants in localized..it involves growth of part tissues like roots stem leaves while in animals it is diffuse that's it occurs in every active cells.
Explanation:
I HOPE THIS IS HELPING.
the enteric nervous system is a network of neurons found throuout the wall of thoracic orgsns such as the lungs. true or flase
Answer and Explanation: The answer is false, as it is a network of neurons, however it is embedded in the wall of the gastrointesinal system.
Which of the following best expresses the concept of natural selection
Answer:
style neutrons
Explanation:
If you gently bend your ear, and then let go, the shape of your ear will return because the cartilage of your ear contains_____.
Answer:
If you gently bend your ear, and then let go, the shape of your ear will return because the cartilage of your ear contains elastic fibers.
3. How do animals survive in water and land habitat?
PLEASE HELP ME!!!!!!!
Explanation:
A salamander adapted to its surroundings both on land & water. these creatures evolved to do both by living in in low- moisture & raining conditions.
scientists have discovered a mutation that prevents the formation of which are responsible for separating chromosomes
The chromosomes are separated by a structure called the mitotic spindle. The mitotic spindle is made of many long proteins called microtubules, which are attached to a chromosome at one end and to the pole of a cell at the other end. The sister chromatids are separated simultaneously at their centromeres
D D 4) After making an observation, what does a scientist ask?
What if I don't clean my room?
Are all doctors scientists?
A problem question.
What did someone else say about the same topic?
Who might disagree with me?
diegetic sound in the film monkeys paw 2011
why do the scientists feel comfortable with calling the hybrids a new species
Answer:
1 . They have the potential to interbreed in nature . 2 . They can produce viable offspring if they do interbreed—that is, their offspring are healthy enough to produce offspring of their own . and also its new,
Explanation:
Are gender traits completely a result of societal expectations?
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Answer:nope there are no parts like that.
Explanation:
our body uses energy in the form of ATP which is a by product of respiration.
Glucose molecue is broken down into water and ATP molecule.
So our body only take oxygen from blood.
We don't have stomata all over our body dude!
What principle of light’s behavior can be used to make a far away object appear closer and also make a small object appear larger? A. incidence B. reception C. transmission D. refraction
Answer:
I believe that the answer to this question would be D. refraction
Explanation:
because it changes direction of the light in don't know how to explain
Did the predators prey on the two variations of moths equally?
Answer:
This is true.
Explanation:
I did the test.
PLEASE HELP!! 70 POINTS!!!
Explain how DNA is involved in creating genetic variation within a species. Is this considered a mutation, if so why?
Answer:
different strands creates different human characteristic
9. WHY IS THIS (ANSWER TO #8. FROM ABOVE) MOLECULE SO IMPORTANT?
Answer: Adapter Molecule of RNA
Explanation:
It's a link for mRNA and amino acids.
organisms can be made up of many________
Answer:
individual organisms can be organized into the following levels: cells, tissues, organs, and organs systems.