Following secretion at the median eminence, thyroid-stimulating hormone (TSH) goes to the anterior pituitary via the hypophyseal portal system where it binds to the TRH receptor and stimulates the release of prolactin from lactotropes and thyroid-stimulating hormone from thyrotropes.
Thyrotropin-releasing hormone (TRH) in the hypothalamus causes the anterior pituitary to secrete more thyroid-stimulating hormone (TSH). TSH then starts the thyroid gland's production of and release of thyroid hormone (TH). The principal regulator of thyroid gland growth and function is thyrotropin-releasing hormone (including the secretion of the thyroid hormones thyroxine and triiodothyronine). The cell bodies in the periventricular nucleus (PVN) of the hypothalamus produce the peptide hormone TRH.
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glass lake, located in a valley in low forested mountains, for many decades of the 19th and early 20th centuries was a favorite picnic, recreation, and fishing site for people in surrounding towns and farms. the use of chemical fertilizers and pesticides increased several-fold by the end of the century. in addition, the combined population of the lakeside villages quadrupled during the same time. the lake experienced an overgrowth of algae, and a slow degradation of water quality and biodiversity. sport fishing declined, and the lake became murky, while the sediments in the lake increased in depth. the symptoms of the lake suggest .
The symptoms of the lake with overgrowth of algae and a slow degradation of water quality and biodiversity suggest it is eutrophication.
What are the causes of eutrophication?The process of eutrophication, which happens when the environment becomes enriched with nutrients, increases the quantity of plant and algae development in estuaries and coastal waters, is what causes harmful algal blooms, dead zones, and fish kills.
What other name does eutrophication go by?Dystrophic and hypertrophic conditions are other terms for advanced eutrophication. Systems with freshwater or saltwater can be impacted by eutrophication. Excess phosphorus is nearly often the culprit in freshwater ecosystems.
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The body is able to regulate how much energy it produces by monitoring the relative amounts of ATP and ADP or AMP in the body.
the pedigree below shows the inheritance of an autosomal trait. which individuals in this pedigree have the genotype -> bb ? choose all that apply.
A pedigree is a diagram that shows a family tree or the transmission of a certain feature. They may be instructive to observe and useful instruments for identifying patterns of inheritance of particular features.
When there is evidence of a genetically inherited illness in one or both families, genetic counsellors frequently utilise pedigrees to assist couples in making the decision to have children. They are also employed when attempting to ascertain a person's propensity for carrying a genetic illness, such as familial breast cancer.
The synthesis of an aberrant form of the protein neurofibromin results in neurofibromatosis, which is the predominant type. Affected people have aberrant skin pigmentation patches and benign tumours that might damage the neurological system and result in blindness. Some tumours have the potential to develop into cancer.
There is no neurofibromatosis in the recessive variant of the gene since it is a normal protein.
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These structures are found in the nucleus of dividing cells, they appear X-shaped
chromosome structures are found in the nucleus of dividing cells, they appear X-shaped. they contain sister chromatids.
Chromosomes are thread-like structures found inside the nucleus of animal and plant cells. Protein and one molecule of deoxyribonucleic acid make up each chromosome (DNA). DNA, which is passed down from parents to children, includes the precise instructions that give each kind of living thing its individuality. Because chromosomes are cell structures or entities that are heavily stained by several vibrant dyes employed in study, scientists gave them this moniker. Histone-like proteins, which resemble spools, keep DNA firmly wound around them thanks to the specific structure of chromosomes. DNA molecules would be too lengthy to fit inside cells without this packing.
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throughout human history, animals have been bred by _______________ selection. Compared to their ancient ancestors, todays farm animals mature more quickly and grow much larger. They also produce more offspring more quickly. Today, the practice of ________________ is being enhanced by genetic __________________. artificial•engineering•genetic•
human•husbandry•manipulation•
natural
Throughout human history, animals have been domesticated by artificial selection. Today's farm animals mature more quickly and grow much larger than their ancient ancestors. They also produce more offspring more quickly. Today, the practice of animal husbandry is being increased by genetic engineering.
What is Animal husbandry?Animal husbandry is defined as the branch of agriculture that involves the day-to-day care, selective breeding, and raising of animals that are raised for meat, fiber, milk, or other products.
Animal husbandry helps in proper management of livestock by providing adequate food, shelter and protection to domestic animals which provides employment to a large number of farmers thus raising their standard of living and to produce high yielding breeds of livestock. Helps in crossbreeding.
Thus, throughout human history, animals have been domesticated by artificial selection. Today's farm animals mature more quickly and grow much larger than their ancient ancestors. They also produce more offspring more quickly. Today, the practice of animal husbandry is being increased by genetic engineering.
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Why is visualization not sufficient to properly identify bacteria? Bacteria have a limited set of shapes. Identification is only needed in clinical specimens. Many unrelated bacteria can share the same shape. Bacteria have a limited set of shapes and many unrelated bacteria share the same shape. Not all bacteria can be seen with a light microscope.
Since bacteria only have a variety of forms and many unrelated bacteria have the same shape, visualization alone is insufficient to accurately identify germs. The right response in this case is option D.
Bacteria only come in a few different forms. Only clinical specimens need identification. The shapes of several unrelated bacteria can be similar.
While visualization has a place in the data science skill set, it's crucial to be aware of its limitations, including the halo effect and the fact that human vision is imperfect.
However, images can also be changed to fit the story the author wishes to tell. Images that are misleading and unclear have the potential to distort data and influence key choices in the wrong way. Deceptive data representations have lasting repercussions including misunderstandings and a decline in confidence.
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during the process of meiosis, part of one chromosome detaches and reattaches to a different chromosome in the cell of an individual. which of the the following is true regarding this mutation?
In a person's cell, meiosis occurs when a portion of one chromosome separates and attaches to another chromosome. The individual's progeny might inherit the mutation.
When a chromosome segment dissociates (detaches) and reattaches to a different, nonhomologous chromosome, the process is known as translocation. Depending on how the placements of genes in relation to regulatory sequences are altered, translocations can be beneficial or have disastrous consequences.
Notably, particular translocations have been linked to schizophrenia and a number of malignancies. When two nonhomologous chromosomes exchange chromosome regions, a reciprocal translocation occurs in which no genetic information is gained or lost.
a chromosomal abnormality in which a chromosome segment separates and reattaches in the opposite direction.
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During the process of meiosis, part of one chromosome detaches and reattaches to a different chromosome in the parent cell of an individual. Which of the following is TRUE regarding this mutation?
- The mutation could get passed on to the individual's offspring.
- The mutation could cause cancer in the individual.
- The mutation will affect only somatic cells in the individual.
- The mutation could affect protein production in other cells of the body.
A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic; s is the allele for the recessive, dented shape characteristic. Y is the allele for the dominant, yellow color characteristic; y is the allele for the recessive, green color characteristic. Fill in the Punnett square and tell how many offspring will be in the various genotypes and phenotypes. (35 points)
Alleles randomly split during gamete formation, resulting in various combinations in daughter cells. In this case, the gametes are YS, Ys, yS, and ys.
How do gametes form?Meiosis is the process through which gametes are created. Meiosis is a cell division process that results in the formation of gametes from germ cells. A diploid cell (2n) creates four haploid daughter cells via Meiosis (n). Alleles separate separately during gamete formation, according to the segregation principle. During anaphase I, homologous chromosomes split and travel to opposing poles of the cell, each carrying one of the alleles. This chance occurrence results in various chromosomal configurations in the daughter cells.
Let us now examine the issue.
SsYy plant heter0zyg0us for both seed shape and seed color
The dominant allele S is responsible for spherical form.
The recessive allele s is responsible for the dented form.
Y is the dominant allele and codes for yellow, whereas Ys is the recessive allele and codes for green.
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Match the Terms the the appropriate definition.
Terms and definitions of skeletal structure:
Appendicular skeletonAxial skeletonDiaphysisPeriosteumSkeletonSynovial jointGreen stick fractureWhat is the role of the skeletal system?The human body's skeletal system serves as a support structure. It shapes the body, allows movement, produces blood cells, protects organs, and stores minerals. The musculoskeletal system is another name for the skeletal system.
The skeleton is the framework of the body made up of bones and other connective tissues that protects and supports the body's tissues and internal organs. The periosteum is the tough, thin outer membrane that covers the bones.
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Given that a human normally contains 46 chromosomes, give the chromosome number for each of the following conditions:
Turner syndrome (female, no Barr bodies)
Klinefelter syndrome (male, one Barr body)
Answer:
Turner syndrome = 45 chromosomes, Klinefelter syndrome = 47 chromosomes
Explanation:
Turner syndrome is a condition where a female's 23rd pair (the pair that determines sex) consists of only X, while Klinefelter is defined by a male's 23rd pair consisting of XXY.
if the anti-inflammatory drug in treatment 1 interfered with dna replication, in which phase of the cell cycle would cells tend to be arrested?
In the S phase of the cell cycle, cells typically become arrested.A single chromosome that fails to correctly adhere to a mitotic spindle might cause cell cycle arrest inside the M phase.
A single chromosome that fails to correctly adhere to a mitotic spindle might cause cell cycle arrest inside the M phase. When cells are exposed to medications that either disrupt as well as hyperstabilize spindle microtubules, the same cell cycle checkpoint that causes S phase arrest also causes M phase arrest. phase S. The cell creates a full molecule of dna inside its nucleus during the S phase. Additionally, it makes duplicates of the centrosome, a structure that organises microtubules. The G0 phase, also known as the quiescent stage, occurs when cells stop dividing (do not enter S-phase after G1 - phase), differentiate, and go through apoptosis.
(If the anti-inflammatory drug in Treatment 1 interfered with DNA replication, in which phase of the cell cycle would cells tend to be arrested?
A) Go phase
B) G1 phase
C) S phase
D) G2 phase)
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what is the phylum of plant that is identified by having no true leaves, dichotomous branching as well as lobed sporangia (usually yellow in color).
Lycophyta and monilophyta is the phylum of plant that is identified by having no true leaves, dichotomous branching as well as lobed sporangia (usually yellow in color).
Lycophytes, also known as "ferns," are a group of vascular plants similar to ferns, but with distinctive leaves called microphylls. They are primitive plants, devoid of seeds, trees, fruits and flowers.
Monophytes: These are ferns and their allies. they form a monophyletic group of euphyletic plants (having true leaves)
lycophytes have proto-stelae. A very simple stele of vascular tissue without a marrow. In monophytes, the gametophyte dies once the sporophyte is firmly established and reaches a sufficient size. Seed plants and monocotyledonous plants contain large leaves, whereas lycophytes contain small leaves in their structure.
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the relationship between the steroid hormone, estrogen, and the peptide hormone, insulin, is being investigated. in order to quantify levels of each of these hormones, tissue samples were homogenized and then placed in a mixture of 2:1 hexane/water. what is the expected result from this extraction method?
The correct option is a) oestrogen would be in the hexane phase; and insulin would be in the aqueous phase.
The regulation of the female menstrual cycle and the growth and development of females depend on the hormone oestrogen. An essential hormone that controls blood sugar is insulin. According to the structural characteristics of peptides and steroids, oestrogen is hydrophobic and insulin is hydrophilic. The hydrophobic oestrogen hormone would segregate into the hexane phase, whereas the hydrophilic insulin peptide would be anticipated to be present in the aqueous phase.
Hexane and water in a 2:1 ratio are combined with the hormones insulin and oestrogen. Because it is a hydrophilic molecule, insulin dissolves readily in water. Hydrophobic molecules like oestrogen readily dissolve in hexane.
Thus, alternative is the right response (A).
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A pea plant will be tall if it has at least one tall allele in its genome. A plant will be dwarf only if it has two alleles for the dwarf phenotypes. What conclusion can be drawn based on this information?
Write a list of 10 words that describe what happened at the cross. Write a few sentences about how each word is relevant to the events surrounding Jesus' crucifixion.
Answer:
Betrayal - Judas Iscariot, one of Jesus' disciples, betrayed Jesus by leading the Roman authorities to him in exchange for 30 pieces of silver.
Crucifixion - The Roman method of execution in which the condemned person is nailed or tied to a cross and left to die.
Redemption - Jesus' death on the cross is believed by Christians to have paid the price for the redemption of humanity's sins.
Sacrifice - Jesus' death is seen as a sacrifice for the sins of humanity.
Atonement - Through his death, Jesus is believed to have made atonement for the sins of humanity.
Forgiveness - Jesus' death is seen as a means of obtaining forgiveness for sins.
Victory - Christians believe that through his death and resurrection, Jesus achieved victory over sin and death.
Suffering - Jesus suffered a great deal of physical and emotional pain during the events leading up to and including his crucifixion.
Triumph - Jesus' resurrection is seen as a triumph over death.
Salvation - Jesus' death is believed to have made salvation possible for humanity.
Explain how natural selection is related to individuals and populations.
Answer: Natural selection applies to both individuals and populations because natural selection is the process of something adapting. An Individual adapts to extreme heat, heavy rain, etc. This individual then has offspring which the adaptation passes off to and to his offspring and so forth. Another way it affects population is by the area in which the population lives. If the individual and other individuals live in the same area, the other individuals are likely to adapt to the environment as well.
What will happen where two continental plates collide at a convergent boundary? (1 point)
one plate is subducted beneath the other.
the direction shifts and it becomes a transform boundary.
the plates push up, forming a mountain range.
a volcanic island arc is formed.
"the plates push up, forming a mountain range." that is Mountains develop when continental plates meet. Continental plates have higher density, sometimes extending lower than the mantle, and are the least understood of all tectonic boundaries.
What is continental plates?Plate tectonics is the widely recognized scientific idea that the Earth's lithosphere is made up of a series of huge tectonic plates that have been steadily moving since around 3.4 billion years ago. Tectonic plates are massive chunks of the Earth's crust and upper mantle. They are composed of oceanic and continental crust. Earthquakes occur around mid-ocean ridges and major faults that indicate the plate boundaries. Tectonic plates are fragments of the Earth's crust and uppermost mantle, collectively known as the lithosphere. The plates are approximately 100 km (62 mi) thick and are made up of two types of material: oceanic crust (also known as sima from silicon and magnesium) and continental crust (sial from silicon and aluminium).
Here,
"plates push up and create a mountain range." Mountains develop when continental plates meet. Continental plates have a greater density and can extend below the mantle, making them the least understood of all tectonic boundaries.
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Which period occurred after the extinction of the dinosaurs?
Answer:
The Cretaceous
Explanation:
hope this helps
Answer:
Lystrosaurus and other mammal-like reptiles dominated the early Triassic. The Triassic Period (252-201 million years ago) began after the biggest extinction catastrophe in Earth's history decimated life
Explanation:
if you had a pool of 13 suspects, and only one suspect had a genotype that matched the bxp007 locus found at the crime scene, would you be satisfied that you had identified the perpetrator based only on the genotype frequency calculated for the bxp007 locus? why or why not? explain your answer.
In the present case, we would require additional evidence in addition to the genotype evidence.
Given that only one out of every 64 people is likely to share the same genotype as your suspect and that you are only looking at 13 suspects, if you had a pool of 13 suspects and only one of them shared the same genotype at the BXP007 locus as that discovered at the crime scene, you could be reasonably certain that you had your perpetrator. To strengthen your case, you would need additional proof in addition to your genotype evidence, such as an eye witness, tangible items the suspect left at the crime scene, a motive, etc.
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the offspring of two true-breeding plants is . a. a true-breeder b. a hybrid c. a genotype d. a phenotype
the offspring of two true-breeding plants is d. a phenotype
What holds true for plants that truly propagate themselves?
A plant is said to be true breeding if it exclusively produces offspring that share the same characteristics after self-fertilization. True breeding organisms have the same alleles for the desired features and are genetically similar. For this kind of creature, the alleles are homozygous.
When an organism is heterozygous, it signifies that there are two distinct alleles present at a certain genetic location. A dihybrid organism is one that has two genetic loci where heterozygosity has been detected.
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Which of the following gas is released during the process of photosynthesis? A.HydrogenB.NitrogenC.OxygenD.Carbon dioxide
Answer: C. Oxygen
Explanation:
Oxygen is the gas which is released during the process of photosynthesis. It is due to the hydrolysis of water.
[tex]H_{2} O[/tex] → [tex]H^{+}[/tex] + [tex]O_{2}[/tex] (g)
The actions of which of the following enzymes are responsible for ensuring that chromosomes do not decrease in length with every round of replication?(A) telomerase(B) DNA ligase(C) DNA polymerase(D) helicase(E) primase
Telomerase enzymes are crucial for ensuring sure chromosomes do not shorten with each round of replication.
A chromosome is just a lengthy DNA molecule that contains some or all of an organism's genetic material. The extremely long thin DNA strands in most chromosomes are wrapped by packing proteins; the most essential of these proteins in eukaryotic cells are the histones. Telomerase is the enzyme responsible for telomere length maintenance through the insertion of guanine-rich repetitive sequences.
Telomerase activity is seen in gametes, stem cells, and tumor cells. Inhibiting the catalytic function of telomerase, and therefore the preservation of telomere length, will aid in the limiting of tumor cell reproduction capacity. However, the production of a momentarily active enzyme by intracellular activation or stimulation of telomerase component expression results in telomerase activation or telomere extension, which can be employed to reverse degenerative alterations.
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which of the following organisms is most likely to have the highest percentage of unsaturated fatty acid chains in their membranes? (hint: organisms try to preserve the balance for their membrane dynamics) a: antarctic bacterium b: desert iguana c: human being d: polar bear e: thermophilic bacterium
Antarctic bacterium is most likely to have the highest percentage of unsaturated fatty acid chains in their membranes. These organisms try to preserve the balance for their membrane dynamics.
If the chain of the fatty acid has at least one double bond, the fat or fatty acid is considered unsaturated. While unsaturated fatty acid chains only contain one double bond, polyunsaturated fatty acid chains have several double bonds. Where double bonds are formed, hydrogen atoms from the carbon chain are lost. Because it lacks double bonds and has the most hydrogen atoms linked to the carbons, a saturated fat is referred to as being "saturated" with hydrogen atoms. When compared to an equivalent amount of saturated fat, unsaturated fat molecules have a little reduced energy content (i.e., fewer calories) during cellular metabolism. The greater the unsaturation of a fatty acid (i.e., the more double bonds in the fatty acid).
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what happens to carbon in plants when the plants die?(1 point) responses the carbon is released into the soil, but it is not used again. the carbon is released into the soil, but it is not used again. the carbon is released into the air. the carbon is released into the air. the carbon is not released; it is lost. the carbon is not released; it is lost. the carbon is released into the soil for use by the next generation.
When the plants die, the carbon from the plants gets displaced in the soil and is used by the next generation.
The plants contain a number of carbon compounds. When a plant dies, its body gets decomposed into the soil and later on this carbon gets absorbed in the soil and can be used to make the energy sources of carbon which are usually in the form of fossils which can be used by the later generations.
The plants get decayed or decomposed and release carbon dioxide in the air. The difference in the amount of carbon which the plants absorb and release is known as the net primary productivity.
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reproductive structure called (Asexual Reproduction and Sexual Reproduction)
Answer:
asexual reproductive tungkol sa sex? mga sperm cell maale cell female cell?
What fissure separates the occipital lobe from the cerebellum?
The fissure that separates the occipital lobe from the cerebellum is called the transverse cerebellar fissure or horizontal cerebellar fissure.
The cerebellum is a structure located at the lower back of the brain, beneath the occipital lobe. The cerebellum is responsible for coordinating movement, balance and posture. The transverse cerebellar fissure separates the cerebellum into two hemispheres and helps to distinguish it from the occipital lobe which is responsible for processing visual information and lies above the cerebellum. The cerebellum is connected to the brainstem by three pairs of cerebellar peduncles, which are the superior, middle and inferior cerebellar peduncle.
The fissures are helpful to demarcate the various regions of the brain that then make study of the organ easier.
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traits associated with ancestry are one way that modern human skeleton morphology varies between individuals. true false
traits associated with ancestry are one way that modern human skeleton morphology varies between individuals. This is a true statement.
The skeletal system is a network of numerous components that cooperate to support your movement. Your bones, which are solid objects that form the skeleton of your body, make up the majority of your skeletal system. The skeleton of an adult human has 206 bones.
Biology's study of the dimensions, forms and internal relationships of animals, plants, and microbes is known as morphology. The phrase describes the basic biological features of a plant's or animal's component arrangement and structure.
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Isotonic,hypertonic, or hypotonic
condition plant cells require?
condition that animal cells
require?
plant shrinks
(plasmolysis)?
The condition plant cells require is the hypotonic environment.
The condition that animal cells require is isotonic environment.
plant shrinks when placed in a hypertonic solution.
What is hypertonic solution?
A hypotonic solution is described as a solution that has a lower solute concentration compared to another solution.
If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis.
This means that the pressure decreases to the point where the protoplasm of the cell peels away from the cell wall, leaving gaps between the cell wall and the membrane and making the plant cell shrink and crumple.
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Baldness is a dominant trait that is influenced by an individual's sex. a man will become bald if he has the genotype bb or bb. a man who is bb will not become bald. a woman will have thinning hair, but not become totally bald, if she is bb. a woman will not become bald, or have thinning hair, if she is bb or bb.
what will be the outcome if a woman who is xxbb produces a child with a man who is xybb?
a
there is a 75% chance that the child will be a female who will have thinning hair.
b
there is a 50% chance that the child will be a male who will become bald.
c
there is a 12.5% chance that the child will be a male who will not become bald.
d
there is a 25% chance that the child will be a female who will not have thinning hair.
Answer:
C. There is a 12.5% chance that the child will be a male who will not become bald. This is because the man is xybb, which means he has one copy of the baldness gene (B) and one copy of the non-baldness gene (b). The woman is xxbb, which means she has two copies of the non-baldness gene. Since the man has one copy of the baldness gene, there is a 50% chance that any male offspring will inherit the baldness gene, and a 50% chance that any female offspring will inherit the non-baldness gene. Therefore, the chances of the male offspring not inheriting the baldness gene (and not becoming bald) is 50% * 50% = 12.5%.
The intracellular and extracellular fluids are both parts of the ______ environment for cells.
The intracellular and extracellular fluids are both parts of the internal environment for cells.
The intracellular fluid is the fluid which is contained within the cells. The extracellular fluid means that the fluid outside the cells—is divided into that found within the blood and that is found outside the blood; the latter fluid is called as the interstitial fluid. In intracellular fluid the concentration of the sodium ion will be low and the concentration of potassium ions will be high. In extracellular fluid the concentration of the sodium ion will be high and the concentration of the potassium ions will be low.
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