Why can't humans regrow limbs?
Answer:In fact, most of our organs have some turnover in cells, which explains why they're younger than our biological age. The human heart, skin, intestines, and even our bones are slowly replaced over time, meaning that a limited amount of damage can be reduced. However, this doesn't extend to limbs.
Explanation:
Answer:
Humans have stem cells, but they aren't readily available to assist in healing. Because most other mammals are similar, they aren't very good at regeneration. Amphibians and some fish have more readily available stem cells, which are usually rather good at regeneration.(please mark brainliest <3)
Explanation:
In the modern system of biological classification ______ and ______ are used for the scientific name of organisms.
Answer:
species ,epithet
Explanation:
because
In the modern system of biological classification the genus and species names are used for the scientific name of organisms.
What is system of biological classification?The modern system of biological classification is the classification that involves the naming and arrangement of organisms in groups according to a hierarchical order.
In this type of classification, organisms are given scientific names based on their genus and the species.
This pattern of double naming is called binomial nomenclature consisting of two names.
Therefore, in the modern system of biological classification the genus and species names are used for the scientific name of organisms.
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Which of the following gives bones their rigidity?
Answer:
b. Minerals
Explanation: is correct
Can someone help me with this please? i would really appreciate it
Answer:
I'll try, what is it?
Explanation:
true or false. sequence read 2 is identical to the reference genome.
Answer:
False
Explanation:
A reference provides a haploid mosaic of different DNA sequences from each donor.
how long do monoclonal antibodies stay in your system
Answer:
They are effective for a month and gone after 6 months. not sure if that's an answer choice but that's what I got.
Explanation:
Vaccines are given to provide protection against pathogen causing infections. Which of
the following statements best describes how vaccines work?
Group of answer choices
A. Antibodies in the vaccine provide the body with nonspecific immunity to an antigen.
B. Fever and swelling develop which is the first response in killing a pathogen.
C. An inactivated or killed virus stimulates the body to develop specific immunity to that type of virus.
D. Heathy bacteria causes the body to release toxins which will protect the body if later exposed to different type of bacteria.
Answer: Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself. Regardless of whether the vaccine is made up of the antigen itself or the blueprint so that the body will produce the antigen, this weakened version will not cause the disease in the person receiving the vaccine, but it will prompt their immune system to respond much as it would have on its first reaction to the actual pathogen.
The cell in the diagram is an animal cell. How can you tell it is an animal cell and not a plant cell? Give two reasons.
Answer:
because it is round and it has the different types of organelles in a layer by layer format
Explanation:
Answer:
1.Animal cells have no chloroplasts.
2.They also don't have cell wall.
The main structural distinction between the left atrium and the right atrium is that the left atrium has the _____, and the right atrium does not.
a. auricle
b. pectinate muscles
c. cardiac muscles
d. chordae tendinae
Given our understanding of cardiac anatomy, we can confirm that the main structural distinction is that the right atrium has the pectinate muscles, while the left one does not.
Firstly, we must address that there is a wording issue with the question. In reality, it is the right atrium that contains the pectinate muscles. The remaining options either correspond to both atrium, or neither.
The auricle is another word for ear. This is a cavity present on both the right and left atrium which allows them to extend their blood carrying capacity in situations of need. This option cannot be correct for the question since both atria possess one.
As for options b and c, cardiac muscle is present in the entirety of the heart. Cardiac muscle is the muscular cells that make up every wall and cavity of the heart and allow it to complete its unique function. Chordae tendinae, are fibers present in the ventriculus that attach the walls to the tricuspid valve, these are not present in either of the atria.
Therefore, we can confirm that though the wording is off, the intended correct answer is pectinate muscles, given that the right atrium is characterized by their presence, whilst the left atrium contains few, if any, of these muscles.
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Answer: Auricle
Explanation: Just took the test
A microbiologist identifies a bacterium that is capable of degrading cellulose, lignin, chitin, latex, aromatic chemicals, and keratin. It produces metabolic byproducts that give soil a musty smell as well as some that can be used as antibiotics. Which of the following genera is being described?
a. Campylobacter.
b. Streptomyces.
c. Neisseria.
d. Pseudomonas.
how does the cell make proteins inside the ribosome
Answer:
23
Explanation:
where do plants store the converted energy of sunlight
a group consisting of only the wood, american, cave, and desert cockroaches is a monophyletic group. true or false?
A group consisting of only the wood, american, cave, and desert
cockroaches being a monophyletic group is True.
What is a Monophyletic group?This is the type of groups which consists of organisms which have a
common ancestor.
The organisms mentioned above are all types of cockroaches which
means they emanated from a common ancestor and makes it valid.
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What is ATP ?
[tex] \: [/tex]
Answer:
Adenosine triphosphate (ATP) is an organic compound and hydrotrope that provides energy to drive many processes in living cells, such as muscle contraction, nerve impulse propagation, condensate dissolution, and chemical synthesis.
Explanation:
A chromosomes contains ________ and ___________organic molecule
Answer:
A chromosome consists of DNA and genetic organic molecules.
Where is the center of the cold air mass? ( name the region of the state near the center)
A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water, equal to the volume of blood lost, is transferred directly into one of his veins.
What will be the most probable result of this transfusion?
A.
It will have no unfavorable effect as long as the water is free of viruses and bacteria
B.
The patient’s red blood cells will burst because the blood fluid is hypertonic compared to the cells
C.
The patient’s red blood cells will shrivel up because the blood fluid is hypotonic compared to the cells
D.
The patient’s red blood cells will swell because the blood fluid is hypotonic compared to the cells
Answer:
I think its B. because the patients red blood cells will burst because the blood is hypertonic compared to the cells
a/an ___ is a blood clot attached to the interior wall of a vein or artery.
Answer: a thrombus
A thrombus may also form in your heart
A thrombus is a blood clot attached to the interior wall of a vein or artery, which is option a. So the correct option is option a, as thrombus formation occurs when blood coagulation factors are activated and form a clot within a blood vessel.
Thrombi can occur in veins (venous thrombosis) or arteries (arterial thrombosis). In veins, a thrombus can lead to deep vein thrombosis (DVT), which commonly occurs in the lower extremities. If a thrombus dislodges from its site of origin and travels through the bloodstream, it is called an embolus, and it can potentially cause an embolism in another location. So the correct option is option a.
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a/an ___ is a blood clot attached to the interior wall of a vein or artery.
A. thrombus
B. artery
the green pigment that traps the energy of sunlight for photosynthesis is
Answer:
The green pigment that traps the energy of sunlight for photosynthesis is called chlorophyll.
Answer:
chlorophyl
Explanation:
yea i learned this is science last year
retreat of alpine glaciers is caused by what process?
Answer:
Glaciers may retreat when their ice melts or ablates more quickly than snowfall can accumulate and form new glacial ice. Higher temperatures and less snowfall have been causing many glaciers around the world to retreat recently.
Explanation:
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Gerald is lightheaded and tired from a lack of oxygen in his tissues.
What is most likely the reason he feels this way?
His plasma level is high.
His white blood cell count is high.
His platelet count is low.
His red blood cell count is low.
Answer:
His red blood cell count is low
A life history strategy describes an organism produces offspring and how much energy the organism invests in any given reproductive bout.
a. True
b. False
When we inhale what do we bring in?
Answer:
oxygen
Explanation:
We breathe in oxygen into our lungs and let out carbon dioxide.
Which statement best expresses a relationship between organic farming and conventional farming that is presented in the passage?.
Answer:
producing "sheer calories "
A mother has type O blood and a father is heterozygous for type B blood. What are the chances of the offspring having type O blood?
Answer:
50 percent
Explanation:
O is a recessive trait. The father has a B and an O, using a punnet square you are able to determine that the possible outcomes are BO, BO, OO, and OO
Compare the transformation of a bacterium cell with the transformation of a plant cell.
Answer:
Compare the transformation of a bacterium cell with the transformation of a plant cell.
Explanation:
Which is a homologous structure to the human forearm?
O A. The beak of a bird
OB. The skull of a raccoon
O C. The tail of a dog
O D. The leg of a horse
The homologous structure to the forearm of humans is the leg of the horse.
What are homologous organs?Homologous organs are organs that share similar structural organization. They are similar structurally but are different in functions. They share common ancestors. These organs are anatomically similar. As there are common ancestors, this type of evolution is known as divergent evolution.
The reason behind the divergent evolution is environmental changes, and food requirements which force them to evolve according to the requirements. The wings of bats, the forearms of humans, and the front legs of the horse are a few examples of homologous organs which underwent divergent evolution.
Homologous organs have different functions in organisms.
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How do the oxygen (O2) and carbon dioxide (CO2) levels change over time?
What is always true about the total amount of O2 and CO2 in the test tube?
What happens when the CO2 reaches zero?
Answer:
Over a vast amount of time, millions of years, the earth gradually cooled. When the temperature dropped enough, water vapor condensed and went from a gas to liquid form. This created clouds. From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.
Explanation:
Why do fossils that paleontologists find represent only a partial picture of life in the past?
Answer:
Because we cannot see some animals properly like jellyfish as their tissue is too soft, and feathers or for can often not make an imprint on fossils.
Explanation:
Answer:
Fossils: They are remains of animals or plants in the past that were somehow preserved and buried under the earth's crust.
One fossil can only give us a glimpse into the history of the time that particular animal or plant lived or breathed on the earth. For example, a fossil remains of a particular species of dinosaur would only provide information of the time when that species lived on earth and other information related to that particular time. Fossil remains of dinosaurs would not give us information on the time during the ice age or any other time in history.Explanation:
The study of various fossils can give us information about the development and evolution of living organisms over time but there are limitations to it.It may happen if we compare the fossil remains of an organism that existed billions of years ago we may find a time gap where there is no fossil evidence found so it creates a loop in information.Also, the process of fossilization is complex and long. Many species of the past became extinct without fossilization so we can never get information related to those extinct species.Thus, because of this reason we can say that fossils don't provide us with complete information about the past.For more information:
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!!!!NEED HELP NOW!!!!
Describe the structures within cells that govern heredity, and describe where they are located. Make sure to have 5 sentences which have to be all on topic use great grammar along with great vocabulary usage.
!!PLEASE ANSWER CORRECTLY!!
Answer:
The structure that is responsible for the governance of a cell is the DNA, which is located in the nucleus of the cell.
Explanation:
DNA: It is the genetic material containing genetic information.It is present in the chromosomes inside the nucleus. The genetic information of DNA is stored as code in the four nucleobases namely Adenine, Guanine, Cytosine, and Thymine. The most unique feature of the DNA is that it is self-replicated and makes similar copies of itself. DNA is a double helical structure found in all living organisms including some viruses.In Eukaryotes along with the nucleus, DNA is also present in Mitochondria and Chloroplasts.For more information:
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