Answer:
Natural selection occurs when some of those traits help some individuals survive and reproduce more than others. That causes their genes to become more common in the population over time, and it's the way species evolve to adapt to changes in their environment.
Explanation:
hope this helps =)
true/false. for an e. coli strain with the lac operon genotype i p o z y , identify the level of transcription of the operon genes in each growth medium listed: growth medium contains lactose and glucose.
The satement "The transcription level of the lac operon genes in an E. coli strain with the lac operon genotype i p o z y in growth medium containing lactose and glucose is low." is true.
In this E. coli strain, the lac operon genes are under the control of both glucose and lactose. When both glucose and lactose are present in the growth medium, the bacteria preferentially utilize glucose due to catabolite repression.
As a result, the cAMP levels are low, which leads to reduced binding of the cAMP-CAP complex to the promoter.
This in turn results in a low level of transcription of the lac operon genes. However, lactose can still induce the operon through the allolactose-mediated inactivation of the lac repressor, allowing some transcription to occur, albeit at a low level.
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If the parent strand is T C G T G C A C G G A what would the daughter strand be ?
Answer:
A G C A C G T G C C T
Explanation:
by definition, histology is the study of by definition, histology is the study of microscopes diseases allergies organs tissues
By definition, histology is the study of tissues. The correct answer is option D.
Histology is a branch of biology that involves the bitsy study of apkins. It encompasses the examination of the structure, composition, and association of apkins at the cellular and subcellular situations. The field of histology is vital for understanding the normal armature and function of colorful organs and apkins in the body. Histologists employ a range of ways to prepare towel samples for bitsy examination.
These ways may include obsession, embedding, sectioning, staining, and mounting of towel samples. Microscopes, particularly light microscopes, are used to fantasize the apkins and observe their cellular factors and association. The study of histology provides precious perceptivity into the cellular composition and arrangement of apkins, enabling experimenters and medical professionals to identify and characterize normal and abnormal towel features.
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8. In rabbits, black fur (B) is dominant to white fur (b). Two heterozygous (Bb) parents mate. Please give all possible phenotypes, the phenotypic ratio, all possible genotypes, and the genotypic ratio of the possible offspring.
Answer:
Possible genotypes: BB, Bb, Bb, bb
Possible phenotypes' 3 Black fur and 1 white fur
Genotypic ratio: 1:2:1
Answer:
All possible genotypes are: BB, bb, and Bb
Explanation:
If each B genotype mix, it makes BB, if both b genotypes mix, it makes bb, and if one B ad one b mix, it makes Bb.
PLEASE MARK ME AS THE BRALIEST!What is likely to happen if a new organism that feeds off mice is introduced?
a.
The mice population will increase in response to the arrival of the new organism.
b.
The mice population, grasshopper population, and plant population will all increase.
c.
The new organism will compete with the snake population for resources.
d.
The populations of the existing organisms will remain unaffected.
Please select the best answer from the choices provided
A
B
C
D
Answer: A
Explanation:
this is correct because the mice population will decrease and would increase to prevent extinction
In normal differentiated somatic cells, telomerase Group of answer choices repairs double strand breaks in DNA. adds material to the ends of chromosomes with each cell division. is not expressed and telomere tips erode with each division. removes telomere tips with each division.
Answer:
BTS DNA
Explanation:
ur ma su my love ni uryo uro ni ani ni ka ur wan sam dalla baby. yeong wonhi yeong wonhi yeong wonhi hari nika
QUESTION: If there was no atmosphere around Earth, how would that impact your life in the planet?
Have you ever wondered what would happen if Earth lost its atmosphere? It's believed that the planet is slowly losing its atmosphere, bit by bit, as it bleeds off into space. But what if Earth instantly lost its atmosphere, all at once? Just how bad would it be? Would people die? Would everything die? Could the planet recover?
What Would Happen?
Here's a breakdown of what could be expected:
It would be silent. Sound requires a medium to transmit waves. You could feel vibrations from the ground, but you wouldn't hear anything.
Birds and planes would fall from the sky. Although we can't see air (except clouds), it has mass that supports flying objects.
The sky would turn black. It's blue because of the atmosphere. You know those pictures taken from the Moon? The Earth's sky would look like that.
All unprotected plant and animal life on the Earth's surface would die. We can't survive long in a vacuum, which is what we'd have if the atmosphere suddenly vanished. It would be much like being "spaced' or shot out of an airlock, except the initial temperature would be higher. Eardrums would pop. Saliva would boil. But you wouldn't die instantly. If you held your breath, your lungs would pop, which would be the quickest (albeit most painful) death. If you exhaled, you'd pass out in about 15 seconds and die in around three minutes. Even if you were handed an oxygen mask, you wouldn't be able to breathe. This is because your diaphragm uses the pressure difference between the air inside your lungs and outside your body to inhale.
Let's say you have a pressure suit and air. You'd live, but you'd get a massive sunburn on exposed skin because the Earth's atmosphere is what filters solar radiation. It's hard to say how much trouble you'd be in from this effect on the dark side of the planet, but being in direct sunlight would be severe.
The rivers, lakes, and oceans would boil. Boiling occurs whenever vapor pressure of a liquid exceeds external pressure. In a vacuum, water readily boils, even if the temperature is warm. You can test this yourself.
Although water would boil, the water vapor would not fully replenish the atmospheric pressure. An equilibrium point would be reached where there would be enough water vapor to prevent the oceans from boiling off. The remaining water would freeze.
Eventually (long after surface life had died), solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe.
The lack of atmosphere would chill the Earth's surface. We're not talking absolute zero cold, but the temperature would drop below freezing. Water vapor from the oceans would act as a greenhouse gas, raising the temperature. Unfortunately, the increased temperature would allow more water to transition from the sea into the air, likely leading to a runaway greenhouse effect and making the planet more like Venus than Mars.
Explanation:
Organisms that need air to breathe would die. Plants and land animals would die. Fish would die. Most aquatic organisms would die. However, some bacteria could survive, so losing the atmosphere wouldn't kill all life on Earth. Chemosynthetic bacteria wouldn't even notice the loss of atmosphere.
Volcanoes and geothermal vents would continue to pump out carbon dioxide and other gases to add to the water. The most significant difference between the original and new atmosphere would be the much lower abundance of nitrogen. Earth could replenish some nitrogen from meteor strikes, but most of it would be lost forever.
Could Humans Survive?
There are two ways human beings could survive losing the atmosphere:
Build radiation-shielded domes on the Earth's surface. The domes would need a pressurized atmosphere and would need to support plant life. We would need time to build biodomes, but the result would not be much different from trying to survive on another planet. Water would remain, so there would be a source of oxygen.
Build a dome under the sea. The water could provide pressure and filter out some solar radiation. We wouldn't want to filter out all radiation because we'd probably want to grow plants (though maybe it would be possible to learn some tasty ways to prepare bacteria as food).
describe how the liver and the pancreas regulate the glucose level in the blood when the glucose level drops
Answer:
ok good question. pancreas is an organ which is found in both the exocrine and endocrine gland that's why sometimes it is called heterocrine. The outer portion of the pancreas(pancreatic islets) secrets the pancreatic juice,insulin and glucagon. let see them deeply: the insulin is a hormone secreted by the pancreas which is used for to lower the blood glucose method in appropriate standard they change it into glycogen and stored in liver. the other one glucagon undergoes a catabolic reaction of the glycogen to the glucose when the blood glucose level is very low so,the liver works in response of lower blood glucose level and the pancreas works in elevated blood glucose level thank you
Which of these atmospheric layers is the largest (spans the most height)
Answer:
Troposphere is the correct answer
A 20 year old girl who is active for 30 to 60 minutes a day needs _____ more calories per day than a 10 year old girl who is active for the same amount of time.
A 20 year old girl who is active for 30 to 60 minutes a day needs 2200 more calories per day than a 10 year old girl who is active for the same amount of time.
What is calorie?The calorie is described as a unit of energy that originated from the obsolete caloric theory of heat.
When they are 12 to 13 years old, active teen girls need about 2200 calories per day. From 14 to 24 years old, their daily calorie requirement increases to 2400 calories.
Butter, honey, and brown sugar are foods that are high in calorie.
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Which of the following best describes bases?
A They feel slippery and taste sour.
B They turn red litmus paper blue and react with metals.
C They taste bitter and react with carbonates.
D They turn red litmus paper blue and taste bitter
Answer:
They turn moist red litmus paper blue and they react with metals.
They turn moist red litmus paper blue because they have a pH range of 8-14, hence they are indicated by a blue colour of the litmus.
They react with metals because they are reactive, the reaction forms a metal salt and water.
HOW MANY SPECIES OF WILD TURKEY EXIST?
Answer:
Six species
I hope this helps!
Which domain(s) include(s) only prokaryotes?
A. Bacteria only
B. Bacteria and Archaea
C. Archaea only
D. Eukarya only
The diagram below shows five objects in space. Object 1 is at equal distance from Object 2, Object 3, Object 4, and Object 5.
The mass of Object 2 is double the mass of Object 5. The mass of Object 4 is half of the mass of Object 5 and the mass of Object 3 is half of the mass of Object 4. Which of these statements is correct about Object 2, Object 3, Object 4, and Object 5? Object 3 and Object 5 exert the same gravitational force on Object 1. Object 2 and Object 4 exert the same gravitational force on Object 1. The gravitational force between Object 1 and Object 2 is greater than the gravitational force between Object 1 and Object 4. The gravitational force between Object 1 and Object 3 is greater than the gravitational force between Object 1 and Object 5.
The object that attracts object 1 with the least gravitational force is object 3.
What is the gravitational force?The gravitational force is the force that acts between two or more bodies in space. It is the force that attracts objects to the center of the earth thus the gravitational force is an attractive force.
Looking at the image as shown and the statements in the question, we can see that the distance between the objects are the same so we consider the mass of the objects when deciding the gravitational force.
Thus, the object that attracts object 1 with the least gravitational force is object 3.
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Missing parts:
The diagram below shows five objects in space. Object 1 is at equal distance from Object 2, Object 3, Object 4, and Object 5.
Object 1 is shown at the center and objects 2, 3, 4, and 5 are located around it so that they are equidistant from Object 1.
The mass of Object 2 is double the mass of Object 5. The mass of Object 4 is half of the mass of Object 5 and the mass of Object 3 is half of the mass of Object 4.
Which of these objects attracts Object 1 with the least gravitational force? (2 points)
Object 1
Object 2
Object 3
Object 4
This chemical reaction describes how-
Answer:
odp:d
Explanation:
Thermogenesis has been studied the plants in the genus Arum, including skunk cabbage and the corpse flower. In these plants, what hypotheses have been provided to explain the reason behind thermogenesis? Select ALL that apply
a) protection from frost damage
b) leaf production and photosynthesis.
c) seed germination.
d) heat source for pollinators
c) pollinator attraction.
Answer:
a,b,c
Explanation:
Protection from frost damage, leaf production and photosynthesis along with seed germination explain the reason behind thermogenesis.
What is thermogenesis?
The process through which organisms produce heat is known as thermogenesis. All warm-blooded creatures experience it, and a few thermogenic plant species including the Eastern skunk cabbage, the Voodoo lily, and the huge water lilies of the genus Victoria also experience it.
One of the primary purposes of transpiration, which serves as the upper terminal mover of the water circulation in plant systems, is thermoregulation. It establishes a constant water flow from the plant's root system to its leaves and other vegetative organs, uniting them into one whole.
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how asthma is caused i just need a short answer
Answer:
These include:
•having an allergy-related condition, such as eczema, a food allergy or hay fever – these are known as atopic conditions
••having a family history of asthma or atopic conditions
having had bronchiolitis – a common childhood lung infection
••exposure to tobacco smoke as a child
your mother smoking during pregnancy
being born prematurely (before 37 weeks) or with a low birth weight
Answer:
your mother smoking during pregnancy
how can the people who take antibiotics increase resistant bacteria populations? Please answer using the scientific method!
Answer:
How do bacteria become resistant to antibiotics? Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.
What is the best replacement for the underlined word in the sentence below: The glucose in fruit can help give you energy. a. Vitamins c. Juice b. Sugar d. Protein
Answer: Sugar
Explanation: Fruits contain two types of sugars: fructose and glucose. Glucose raises blood sugar so id say your answer Is Sugar.
10. Which equation shows the conservation of matter? Explain why A or B
is the correct answer.
a. 6H2O + 6CO2 → C6H1206 +602
b. 6H2O + 6CO2 ->> C3H603 + 302
* 1 point
Answer: A
Explanation: The elements in the compounds get rearranged. You can't change the amount of hydrogen, oxygen, or carbon the product contains
The equation that shows the conservation of matter is 6H₂O + 6CO₂ → C₆H₁₂O₆ +6O₂, which is in option a .Hence, the correct option is the option a, as it represents the process of photosynthesis.
In this equation, it represents the process of photosynthesis, where six molecules of water (6H₂O) and six molecules of carbon dioxide (6CO₂) react to form one molecule of glucose (C₆H₁₂O₆) and six molecules of oxygen (6O₂). This equation follows the law of conservation of matter. The law of conservation of matter states that matter cannot be created or destroyed in a chemical reaction. It can only change form or be rearranged. In the given equation, the number of atoms of each element is the same on both sides of the arrow, which means the total number of atoms before the reaction is equal to the total number of atoms after the reaction. Hence, the correct option is the option a.
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In terms of energy, what is the difference between between glucose and ATP?
Answer:
Glucose is the carbohydrate produced by photosynthesis. . ATP is the usable form of energy for your cells.
Explana
how much physical factors such as temperature and salinity affect organisms is determined by the: group of answer choices environmental resistance carrying capacity ability to osmoregulate range of tolerance of the organisms
Physical factors such as temperature and salinity affect organisms is determined by the carrying capacity.
The physical and biological world where we live in - Environment. Each level of food chain where transfer of energy takes place - Trophic level. The physical factors like temperature, rainfall, wind and soil of an ecosystem - Abiotic factors. One of the most important abiotic factors influencing species composition in marine environments is salinity. Low-salinity (hypoosmotic) stress, which is common in many estuaries and coastal areas, can cause severe physiological stress in marine animals, affecting survival, immune responses, metabolism, protein function, and other cellular processes. Under moderate hypoosmotic stress, increased osmoregulation costs are met by increasing the routine metabolic rate or re-allocating energy to osmoregulatory processes. This, however, limits the potential for growth and reproduction, as well as, ultimately, fitness. The depletion of the organic osmolyte pool caused by low salinity has been proposed to set a critical boundary in osmoconforming marine invertebrates.
Desalination has been predicted for many coastal areas as a result of ongoing climate change, so it is critical to gain a better understanding of the mechanisms that limit salinity acclimation ability.
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Help! Giving brainliest. I need a 1-2 sentence answer on what the following words mean.
Oil gland
Pore
Hair follicle
Please hurry!
Answer: Oil gland: a gland (as of the skin) that produces an oily secretion: such as. a : a sebaceous gland. b : uropygial gland.
Pore: a minute opening in a surface, especially the skin or integument of an organism, through which gases, liquids, or microscopic particles can pass.
Hair follicle: a small secretory cavity, sac, or gland.
the sheath of cells and connective tissue which surrounds the root of a hair.
Explanation:
I hope this helps you! Have a wonderfull day! ^v^
The element nitrogen is present in all of the following except A) proteins.B) nucleic acids.C) amino acids.D) DNA.E) monosaccharides.
Nitrogen is present in all of the options listed except for monosaccharides. Thus, correct option is (E).
A crucial component of biological compounds is nitrogen. Nitrogen is a component of proteins, nucleic acids (DNA and RNA), amino acids (which serve as the building blocks for proteins), and DNA. Amino acids, which make up proteins, contain nitrogen as a necessary part of their structure.
Adenine, cytosine, guanine, and thymine/uracil are nitrogenous bases that are essential for the operation of nucleic acids, including DNA. Monosaccharides, simple sugars and the fundamental unit of carbohydrates, do not, however, include nitrogen. Instead, the majority of their atoms are made up of carbon, hydrogen, and oxygen.
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if e. coli are grown on culture media containing only lactose, which interaction will not occur?
The interaction that will not occur if E. coli are grown on culture media containing only lactose is the induction of the lac operon.
The lac operon is a group of genes in E. coli that are responsible for the breakdown and utilization of lactose as a source of energy. The operon is induced when lactose is present in the environment, and it is regulated by a repressor protein that binds to the DNA in the absence of lactose. When lactose is present, it binds to the repressor protein and causes it to change shape, releasing it from the DNA and allowing the genes in the operon to be transcribed and translated.
However, if E. coli are grown on culture media containing only lactose, there will be no other sources of carbon or energy available. As a result, the cells will not be able to grow and divide, and the induction of the lac operon will not occur. Without the induction of the operon, the cells will not be able to utilize lactose as a source of energy, and they will eventually die.
In summary, if E. coli are grown on culture media containing only lactose, the induction of the lac operon will not occur, and the cells will not be able to utilize lactose as a source of energy. This highlights the importance of providing a balanced and diverse nutrient environment for the growth and survival of bacterial cells.
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If a couple had a baby who died and could not have any more babies, but had the opportunity to clone their baby, should they be allowed to clone it?
Well, you can’t clone a baby but, not exactly should you be allowed to do it. Could you clone an alive baby? Yes. There's two specific skills that infertility doctors have that are necessary for cloning. One is micro-manipulation of embryos. In this case, to take a human egg, to remove the nucleus, and then to replace that nucleus with a nucleus from a somatic cell, a body cell of the person who is going to be cloned.
if a couple clone a baby , There's two specific skills are taken by infertility doctors have that are necessary for cloning. One is micro-manipulation of embryos.
what is cloning ?cloning can be defined as the process of producing genetically and phenotypically same organism or cells from a single organism/cell,
the process can be occurred either naturally or artificially. The genotypically and phenotypically similar copies of the original organism are called clones.
Artificial cloning's can be up different types such as Reproductive cloning
Gene cloning, Therapeutic cloning
Reproductive cloning produce genetically identical organisms from a particular organism whereas gene cloning involves producing exact copies of a gene or segments of DNA.
Therapeutic cloning involves the production of embryonic stem cells and create tissues that would replace similar but damaged or worn-out tissues in living organisms.
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explain how ectotherms deal with the fact that many enzymes have a fairly narrow range for optimal performance.
The majority of animals must keep their internal body temperatures within a relatively small range. Endotherms keep their bodies warm by producing heat within.
Ectotherms control metabolism in what ways?Animals that employ metabolic heat production to maintain a steady body temperature are known as ectotherms. Instead, their body temperature varies in accordance with the ambient temperature.
Ectothermic species control their body temperatures in what ways?Ectotherms, on the other hand, depend on behavior to control their body temperature. To cool off or warm up, they must move their bodies toward the sun or shade. In comparison to ongoing metabolic regulation, this uses less energy. This explains why many reptiles and other ectotherms may consume a substantial meal once and then go for a while without eating.
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Why is silicon distributed unevenly? Someone please answer asap I will give you a brainliest
Answer:
Inequalities in the exposure to environmental burdens and access to environmental benefits are an environmental justice concern for urban and regional environmental planning. Recent studies have assessed the exposure of different populations to a combination of environmental hazards through GIS-based Cumulative Environmental Impact Assessments (CEIA). The contribution of this study is the development of a CEIA, which incorporates the distance-based impact of transportation, the cumulative impact of environmental hazards, and access to environmental benefits for Santa Clara County (SCC), a highly diverse and rapidly developing region also known as ‘Silicon Valley’. Our results show that social vulnerability, cumulative environmental hazards, and environmental benefits exhibit distinct spatial patterns in SCC.
Explanation:
A mutation in which cells can create a change in heritable traits
Answer:
Gamete cell
Explanation:
Because I just got the question wrong and it showed me the right answer.
A gene alteration that takes place in a parent's reproductive cells (egg or sperm) and has an impact on the child's genetic makeup is known as a “germ line mutation.”
What is mutation?A more or less permanent change to the genetic code (the genome) of a cell in a living thing or of a virus that can be passed on to the offspring of the original cell or virus. Unlike viral genomes, which can be either DNA or RNA, all creature genomes are made of DNA.
Somatic mutation: A variation in a gene that takes place in the developing embryo that may evolve into a child after conception. All cells in the developing organism have these, except for the sperm and egg.
Therefore, a “germ line mutation” is a gene change that occurs in a parent's reproductive cells (egg or sperm) and affects the child's genetic composition.
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Which way do the blue water molecules travel to get into the xylem? Do they go through cell cytoplasm or cell walls, or both?
From the soil, water molecules move into the root hairs. Aquaporins are holes that allow water molecules to pass through cell membranes.
What exactly are molecules?One or more atoms make up molecules. If they contain more than one, they may contain different atoms or the same atoms (for instance, an oxygen molecule has two oxygen atoms) (a water molecule has two hydrogen atoms and one oxygen atom). The number of atoms in biological compounds like DNA and proteins can reach thousands.
How are molecules created?A molecule is the term used to describe the aggregate of atoms that results from the formation of covalent bonds. Therefore, we might claim that a molecule is the most basic component of a covalent composite.
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