Telomere shortening is a problem in which types of cells?.
Answers
Telomere shortening is a problem that occurs in all cells of the body except for germ cells, which are immortal cells capable of continuous division.
Telomere shortening is a problem that is experienced in all cells of the body except for germ cells. Telomeres are repetitive DNA sequences located at the end of chromosomes that act as protective caps to prevent degradation. However, every time a cell divides, its telomeres become shorter. Therefore, telomere shortening is a problem that occurs in all types of cells except for germ cells.
Telomere shortening is a common problem in cells that divide. In most cells, telomeres shorten with each cell division. However, germ cells do not experience telomere shortening. This is because they are immortal cells, meaning that they are capable of continuous division without any damage to their telomeres. Telomeres serve to protect the chromosomes and prevent them from fusing with other chromosomes, which would cause mutations and genomic instability.
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Related Questions
Match each environmental change with its description.
Chemicals react with water and oxygen that enter water systems.
arrowBoth
Nutrients in excessive amounts enter water systems, causing algal bloom.
arrowBoth
A high concentration of toxic chemicals is present in the bodies of animals at the highest trophic levels.
arrowBoth
Answers
Answer:
The question is incomplete, the missing part i.e. the environmental change is:
(A) biomagnification
(B) acid rain
(C) eutrophication
The answers are:
1. Acid rain- Chemicals react with water and oxygen that enter water systems.
2. Eutrophication- Nutrients in excessive amounts enter water systems, causing algal bloom.
3. Biomagnification- A high concentration of toxic chemicals is present in the bodies of animals at the highest trophic levels
Explanation:
1. Acid rain is an environmental disorder in which rainfall becomes acidic due to pollution. The pollution is as a result of the release of gaseous chemicals e.g sulfur, nitrogen oxide, which are produced by industries, into the atmosphere. These chemicals then react with water in the atmosphere to form acidic solutions, which then falls back as rain. Hence, chemicals reacting with water and oxygen that enter water systems describes ACID RAIN.
2. Eutrophication is the pollution of water bodies with substances containing chemicals like nitrogen, phosphorus etc. The chemicals, which are in excess, serve as nutrients to algae, which uses them to grow excessively forming a bloom called ALGA BLOOM. Hence, nutrients in excessive amounts entering water systems, causing algal bloom describes EUTROPHICATION.
3. Biomagnification refers to the build up or accumulation of toxic chemical substances in the body systems of living organisms higher up in the food chain. Pollutants like pesticides, herbicides flow into water bodies and are absorbed by certain aquatic organisms. When these organisms are fed on by consumers, the harmful substances accumulates in their tissues until it reaches a maximum concentration. Hence, a high concentration of toxic chemicals present in the bodies of animals at the highest trophic levels describes BIOMAGNIFICATION.
Answer:
1. Acid rain- Chemicals react with water and oxygen that enter water systems.
2. Eutrophication- Nutrients in excessive amounts enter water systems, causing algal bloom.
3. Biomagnification- A high concentration of toxic chemicals is present in the bodies of anima
Explanation:
An animal cell is dividing. Which of the following would not be seen during this process?
cleavage furrow
cytokinesis
cell plate
centrioles
Answers
Answer:
cell plate
Explanation:
I need help on this 1 question.
Answers
d)Two different plants are crossed. One has the genotype tt and the other has the genotype Tt. Fill in the Punnett square below for this cross. Remember, one parent allele goes in each space on the top and side. (1 point)
Answers
The Punnett square for the cross between a plant with the genotype tt and another plant with the genotype Tt shows that the offspring will have a 50% chance of having the genotype Tt and a 50% chance of having the genotype tt.
To fill in the Punnett square for the cross between a plant with the genotype tt and another plant with the genotype Tt, we need to consider the alleles of each parent and their possible combinations.
The genotype tt represents a homozygous recessive individual, where both alleles for the trait are lowercase (t). The genotype Tt represents a heterozygous individual, where one allele is uppercase (T) and the other allele is lowercase (t).
Let's set up the Punnett square:
| T | t |
---------------------
t | Tt | tt |
---------------------
t | Tt | tt |
---------------------
In the top row, we place the alleles from the plant with the genotype Tt: T and t. In the first column, we place the alleles from the plant with the genotype tt: t and t.
Now, we can fill in the spaces within the Punnett square by combining the alleles from the top and side:
- The top-left square receives one T allele from the Tt parent and one t allele from the tt parent, resulting in the genotype Tt.
- The top-right square receives one T allele from the Tt parent and one t allele from the tt parent, resulting in the genotype Tt.
- The bottom-left square receives one t allele from the Tt parent and one t allele from the tt parent, resulting in the genotype tt.
- The bottom-right square receives one t allele from the Tt parent and one t allele from the tt parent, resulting in the genotype tt.
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Howdy y’all so ummm I really actually lowkey (highkey) have a question like what is the most painful thing someone could ever experience
Answers
Answer:
Child birth
Explanation:
Answer:
Having Frozen Shoulder
Explanation:
A condition characterized by stiffness and pain in the shoulder joint.
The condition occurs more commonly in people with diabetes and in people who've kept their arm immobilized for a long period of time.
Symptoms may start gradually and resolve within one or two years.
Treatment involves stretching and sometimes injecting corticosteroids and numbing medications into the joint capsule. In some cases, surgery is used to loosen the joint capsule.
A Robertsonian translocation is considered non-reciprocal because _______. A Robertsonian translocation is considered non-reciprocal because _______. an uneven number of gametes is produced in each meiosis the smaller of the two reciprocal products of translocated chromosomes is lost for every viable gamete formed, there are two inviable gametes formed trisomies of chromosome 21 are viable, whereas monosomies of the same chromosome are no
Answers
A Robertsonian translocation is considered non-reciprocal because the smaller of the two reciprocal products of translocated chromosomes is lost.
This results in an uneven number of gametes being produced in each meiosis. While trisomies of chromosome 21 are viable, monosomies of the same chromosome are not. In addition to viable gametes, there are two inviable gametes formed in a Robertsonian translocation.
A Robertsonian translocation is considered non-reciprocal because the smaller of the two reciprocal products of translocated chromosomes is lost. This results in an uneven number of gametes produced in each meiosis, and for every viable gamete formed, there are two inviable gametes formed. Additionally, trisomies of chromosome 21 are viable, whereas monosomies of the same chromosome are not.
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HELP i need this question fast pls anyone i will mark brainliest
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Answer:
hi! the answer you already have marked is correct.
Explanation:
D. Weathering and erosion by water.
have a great day!
hope this helped!
feel free to mark as brainliest! ;)
Answer:
D. Weathering and erosion by water
Explanation:
The river water carries sediment to different areas and lays them there. However, after breaking down the river sediment it opens a bigger area in which water may flow, thus allowing the river to become wider
Part A Comparing chromosome separation in bacteria and eukaryotes In all cells, separation of replicated chromosomes is a prerequisite for cell division. However, the mechanism of Sort the following statements into the appropriate bin. e separation in bacteria is distinct from that in eukaryotes in several ways. View Available Hint(s) Reset Help bacteria only eukaryotes only both bacteria and eukaryotes Nuclear envelope fragments, permitting chromosome separation. Chromosomes replicate before cell division. Replicated chromosomes separate by attaching to some other structural eature of the cell. Before separation, duplicated Chromosome separation begins at the origin of replication on DNA. Two copies of the duplicated chromosome are attached at their centromeres before separating. Part B- Cytokinesis in plant cells Cytokinesis in animal cells is accomplished by constriction of the cell along the plane of cell division (formation of a cleavage furrow). In plant cells, which have cell walls, a completely different mechanism of cytokinesis has evolved Which of the following statements are true of cytokinesis in plant cells? Select the two that apply. View Available Hint(s) Vesicles from the Golgi apparatus move along microtubules, coalesce at the plane of cell division, and form a cell plate. After chromosome separation is complete, a network of microfilaments forms near the plane of cell division that will separate the two new cells. The plasma membrane of the parent cell grows inward, eventually joining with the cell plate. The cell plate consists of the plasma membrane and cell wall that will eventually separate the two daughter cells.
Answers
The correct options are as follows:Part A: Comparing chromosome separation in bacteria and eukaryotes- Chromosomes replicate before cell division is a statement that is applicable to both bacteria and eukaryotes.
For part A and B ,give expanation?
Part A: Comparing chromosome separation in bacteria and eukaryotes- Chromosomes replicate before cell division is a statement that is applicable to both bacteria and eukaryotes.- Chromosome separation begins at the origin of replication on DNA is a statement applicable to bacteria only.- Nuclear envelope fragments, permitting chromosome separation is a statement that is applicable to eukaryotes only.
Replicated chromosomes separate by attaching to some other structural feature of the cell is a statement that is applicable to bacteria only.- Two copies of the duplicated chromosome are attached at their centromeres before separating is a statement that is applicable to eukaryotes only.Part B: Cytokinesis in plant cells- Vesicles from the Golgi apparatus move along microtubules, coalesce at the plane of cell division, and form a cell plate.
The cell plate consists of the plasma membrane and cell wall that will eventually separate the two daughter cells.Thus, - Chromosome separation begins at the origin of replication on DNA is a statement applicable to bacteria only.Part B: Cytokinesis in plant cells- Vesicles from the Golgi apparatus move along microtubules, coalesce at the plane of cell division, and form a cell plate.- The cell plate consists of the plasma membrane and cell wall that will eventually separate the two daughter cells.
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basepair the codons to the anticodons 3 ′ gcg 5 ′, 3 ′ acc 5 ′, and 3 ′ agg 5 ′, taking the wobble hypothesis into account. there may be more than one answer choice per anticodon. not all answer choices will be used.
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Anticodon: 3' GCG 5'⇒ Codons: 5' CGC 3' and 5' CGU 3'
Anticodon: 3' ACC 5'⇒ Codon: 5' GUG 3'
Anticodon: 3' AGG 5'⇒ Codons: 5' UCU 3' and 5' UCC 3'
What is its anticodon?During protein synthesis at a ribosome, a triplet of dna nucleotides in transfer RNA that specifies the amino acid transported binds to a complementary codon in messenger RNA.
What use do codons and anticodons function?An mRNA codon is a triplet or triple-nucleotide sequence that codes for a specific amino acid during translation. A three-nucleotide region called the anticodon is present on tRNA and binds to the corresponding mRNA sequence. The anticodon made explicit which amino acid is delivered by the tRNA molecule.
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PCR was used to amplify a specific 500-base section of DNA from three birds of the same species that were thought to be related. The three samples of amplified DN
were run on an electrophoresis gel. Three bands were seen on the gel that were exactly the same size. Are the birds related?
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Yes, the birds are likely related based on the fact that they all have the same size band on the electrophoresis gel after PCR amplification.
Hello please answer this really fast all of the screen shots will be in the comments I will give 90 points to who ever answers it really fast
Answers
Answer:
Where? Where are your questions? Attach the questions.
Answer: bro where is the question ???
Explanation:
Disadvantage
Chemical
Advantage
1.
1.
Dish Detergent
2.
2.
1.
Chlorine
2.
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The development of this new BLG-free, hypoallergenic milk is based on a science that came to the forefront 150 years ago. What scientist's work provided the basis for such feats in biotechnology?
Answers
Answer: Mendel and genetics
Explanation:
Answer soon pls
Which phase of cell division is shown?
Exploring mitosis.
telophase I
prophase I of meiosis
anaphase II
telophase II
Answers
also, the answer is anaphase II
Answer: Anaphase II
I took the 3.09 Quiz: Meiosis and Mitosis.
what cause's cell division
Answers
Cells divide for many reasons. For example, when you skin your knee, cells divide to replace old, dead, or damaged cells. ... When organisms grow, it isn't because cells are getting larger. Organisms grow because cells are dividing to produce more and more cells.
Answer:
Explanation:
Cells in an organism go through division all the time. One reason is for growth. As an organism grows, more cells are created. Cells divide instead of grow because there is an optimal size for cell. So it is more efficient to create new cells.
Second reason for cell division is to repair damaged cells. Some cells like skin cells are damaged routinely and cell division is the way to repair and replace damaged cells.
Last reason is for reproduction. All organisms use cell division to reproduce.
Nicotine replacement and self-management techniques are two approaches to smoking__________________.
What is the name of the method in which a smoker tries to avoid tempting situations and manages feelings that lead to nicotine use?
True or False Most people pick up smoking habits in adulthood.
Making sure your friends know you are tobacco-free and sticking to that decision in the face of pressures and influences requires ________________skills.
Critical Thinking Identify 5 health benefits of smoking cessation (stop smoking) that occur throughout the years after you quit, as well as those you see within a few days.
Can someone pls help me.
Answers
Answer:
It requires trolling your friends skills
An antibody's Fc region can be bound by
A) antibodies.
B) macrophages.
C) T helper cells.
D) B cells.
E) CTLs.
Answers
An antibody's Fc region can be bound by A) antibodies and B) macrophages. T helper cells, B cells, and CTLs do not typically bind to the Fc region of antibodies.
The Fc region of an antibody is the tail region of the antibody molecule that does not bind to antigens but can bind to other immune system components. The Fc region can bind to Fc receptors on the surface of various immune cells, including macrophages and other phagocytic cells. The binding of antibodies to Fc receptors on the surface of these cells can trigger phagocytosis and destruction of the targeted pathogen.
Additionally, antibodies can also bind to Fc regions of other antibodies through a process called antibody cross-linking. This process can lead to the formation of antibody complexes, which can be recognized and removed by phagocytic cells. T helper cells recognize antigen fragments presented by MHC molecules on the surface of antigen-presenting cells, while B cells and CTLs recognize and bind to specific antigen molecules directly.
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20 POINTS EASY PUNNETT SQUARES PLS HELP
(The questions are in the picture. Please answer all question to get the points)
Answers
Answer:
See file below
Explanation:
See file below
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An action potential is triggered if Group of answer choices all of the above. the membrane hyperpolarizes. chloride channels open. EPSPs overpower IPSPs. IPSPs overpower EPSPs.
Answers
An action potential is triggered if all of the above occurs. The membrane hyperpolarizes, chloride channels open, and EPSPs overpower IPSPs and IPSPs overpower EPSPs. An action potential is a brief change in the voltage of a cell membrane that propagates down the axon of a neuron.
It is initiated by a stimulus and results in the generation of an electrical impulse that travels down the length of the neuron to the synapse, where it is transmitted to another neuron or a muscle fiber. The occurrence of an action potential depends on the balance of excitatory and inhibitory inputs that a neuron receives.
If the excitatory inputs are stronger than the inhibitory inputs, the neuron will depolarize and generate an action potential. Conversely, if the inhibitory inputs are stronger than the excitatory inputs, the neuron will hyperpolarize and fail to generate an action potential.
Thus, the balance of EPSPs and IPSPs is critical for the generation of an action potential. In order for an action potential to be triggered, EPSPs must overpower IPSPs, and the membrane must hyperpolarize. Additionally, the opening of chloride channels can contribute to the hyperpolarization of the membrane and increase the likelihood of an action potential being generated.
In conclusion, the occurrence of an action potential depends on the balance of excitatory and inhibitory inputs, and the membrane potential must reach a threshold level in order for the action potential to be triggered.
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Why don’t populations of organisms that reproduce asexually have the same genetic variation as populations that reproduce sexually
Answers
Answer:
Asexual reproducing populations only get their genetics from a single parent, meaning that they all have the exact same DNA/RNA, while sexually reproducing populations have two parents meaning they get genetic code from two parents instead of one, therefore they have more variance. This variance is also the reason sexually reproducing populations are usually harder to wipe out due to variance.
The image shows a chemical's formula.
Which statement describes the molecule?
HHHHHH
H-C-C-C-C-C-C-H
HHHHHH
It is organic and a hydrocarbon.
It is inorganic and a hydrocarbon.
It is organic only.
It is inorganic only.
Answers
The image is not clear. The correct image is attached below.
Answer:
It is organic and a hydrocarbon.
Explanation:
The given chemical formula represents a compound called hexane.
Hexane is a volatile organic compound. It is an unbranched alkane and hydrocarbon constitute of six carbon atoms and 14 hydrogen atom having molecular formula C6H14.
It functions as a neurotoxin and non-polar solvent.
Hence, the correct option is A. It is organic and a hydrocarbon.
Answer:
A
Explanation:
What happens when we decrease the height of an inclined plane?
A) the amount of work needed to do the job is decreased
B)the work to do the job is made easier
C) the amount of work needed to do the job is increased
D) the work necessary to do the job is made harder
Answers
Answer: The correct option is B.
B)the work to do the job is made easier
Explanation:
The work to do the job is made easier because it becomes easy to move object on high elevation, the sloping surface of the inclined plane support and hold part of the object weight. It then require little force or work to move the object up the hill compare to straight up height.
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What is a main difference between Earth and its moon?
A) Earth revolves around the sun, while the moon revolves around Earth.
B) Earth revolves around the sun, while the moon rotates on its axis.
C) The moon revolves around the sun, while Earth revolves around the moon.
D) The moon revolves around the sun, while Earth rotates on its axis.
Answers
Answer:
its definitely the answer B
A student performs the reaction shown below:
NaOH + HCl → NaCl + H2O
Answers
Answer: it’s a neutralization reaction
Explanation:
Place A and B recieve the same amount of rainfall. Place A has a lot of concrete surfaces and roads. Place B had fewer concrete surfaces and more open areas such as playground and parks. Explain the diffrence between the water tables in place A and place B
Answers
The water table in B is greater than the water table in A.
What is the water table?We know that the water table would have to do with the level of the water that can be found under the ground. The water table is formed from the amount of the water that can be bale to get into the ground from the surface of the ground.
Now, we know that if the ground of the place is made up of concrete then there would be less water that would penetrate the ground and then the water table of the place would be found to be lower than those of open areas.
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Only the proteins that the bacteria Escherichia coli (E. coli) needs are synthesized at any given time. For example, when lactose is available in the environment, E. coli will express the lac genes that allow it to break down lactose to obtain energy. When lactose is not present, these genes are not expressed. Which prevents the lac genes in the DNA of E. coli from being expressed most of the time
Answers
Answer:
The lac repressor
Explanation:
In prokaryotic cells, an operon is a set of genes under the control of a single promoter which are transcribed together as a single messenger RNA (mRNA). In Escherichia coli, the lac operon is an operon containing genes involved in lactose metabolism, which is expressed when lactose is present and glucose is absent. This lac repressor is a DNA-binding protein that binds to a specific DNA sequence called the operator, thereby inhibiting transcription of the lac operon when lactose is present. When lactose is present, this disaccharide is converted into allolactose, which acts as an inducer by binding to the repressor, thereby the repressor dissociates from the operator and it allows the expression of the lac genes.
what is the organelles of tardigrade?
Answers
Answer:
The interpretation is characterized mostly in the explanatory section following the table, according to the particular circumstance.
Explanation:
Throughout the preservation race, the tardigrade, commonly abbreviated as either a water bear and sometimes moss piglet, seems to be the actual star. For something like a big proportion of today's present state, this eight-legged, ocean creature, which is comparable to nematodes than what they are to about their glance, the arthropods, and others have progressed unnoticed.Which of the following statements is false?
A. Disruptions in an ecosystem are normal and natural changes.
B. Disruptions in an ecosystem are only caused by tornadoes, hurricanes, and floods.
C. Disruptions in an ecosystem are caused by both human activity and environmental disturbances.
D. Ecosystems are complex, interactive systems that include both biotic and abiotic components of the environment.
Answers
Answer:B
Explanation:
Common sense ♀️
Answer:
c
Explanation:
humans can also disrupt the ecosystem as well as natural causes
Humans are good at transferring energy from place to place.
Answers
Answer:
Yes
Explanation:
Humans are good at it transferring energy from place to place.
The citric acid cycle is a stage of catabolism that oxidizes acetate into carbon dioxide and generates energy. there are eight enzymes involved in the citric acid cycle. Which enzymes produce NADH as a product?a. alpha-ketoglutarate dehydrogenaseb. succinate dehydrogenasec. malate dehydrogenased. isocitrate dehydrogenase
Answers
The enzymes that produce NADH as a product in the citric acid cycle are: alpha-ketoglutarate dehydrogenase, malate dehydrogenase, isocitrate dehydrogenase.
NADH stands for Nicotinamide adenine dinucleotide + hydrogen. It is a coenzyme that is involved in generation of energy for the body during different processes. It acts as a reducing agent that donates electron. Its role is also seen in cell death in the body.
Citric Acid Cycle also called the TCA cycle is the part of the aerobic cellular respiration involved in generation of energy. The process occurs in mitochondria where the energy of acetyl CoA is harnessed into NADH. Acetyl CoA gets oxidized in this cycle.
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