Answer:
hormones
Explanation:
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What type of adaptation does a wood frog have?
Wood frogs have the adaptation to freeze in the winters.
In the field of biology, adaptation can be described as a process that allows a particular organism to survive in an environment. Only those organisms that are adapted to an environment can stay alive in a particular environment.
Wood frogs are organisms that survive in the woods. However, these organisms need an adaptation to survive in the winter. They hence have the ability to freeze themselves during the winters and anti-freeze in the summers.
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Which of the following are not associated with Darwin's theory of evolution?
a. Variation within a population.
b. Use and disuse of organs.
c. Natural selection.
d. Sexual selection
Use and disuse of organs are not associated with Darwin's theory of evolution.
Hence, option B is correct.
Charles Darwin was a British naturalist who proposed the theory of natural selection in biological evolution. Darwin defined evolution as "descent with modification," implying that species change over time, giving rise to new species, and sharing a common ancestor.Over time, an advantage spreads throughout a species, increasing the species' chances of survival and reproduction. Thus, subtle changes occur and accumulate over many generations, eventually morphing into larger changes and, possibly, a new species.To know more about Darwin here
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What are three ways to prevent contamination when working with bacteria?
By following proper hygiene practices, utilizing aseptic technique, and using appropriate methods of containment, researchers can help ensure that their experiments are successful and free of contamination.
The first way to prevent contamination is to practice good hygiene. This includes washing hands before and after handling bacteria cultures and wearing protective gear, such as a lab coat and gloves. All surfaces should be regularly disinfected and any materials used in the experiment should be properly labeled and stored in a clean environment.
Second, the researcher should make sure to use aseptic technique when working with bacteria cultures. This includes sterilizing all equipment and materials before use, working quickly and efficiently, and avoiding contact with the outside environment. The researcher should also be aware of potential sources of contamination, such as dust or other bacteria, and take steps to minimize their presence in the lab.
Finally, the researcher should use appropriate methods of containment to prevent the spread of bacteria. In some cases, this may involve using airtight containers or even special incubators.
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What happens in light dependent and independent reactions?
Chlorophyll absorbs solar energy, which it then transforms into chemical energy that is stored for use in light-dependent reactions.
The carbon dioxide-driven construction of sugar molecules in the light-independent processes is propelled by the chemical energy captured in the light-dependent reactions.
The light-dependent processes change the energy of light into chemical energy. The light-dependent reactions of photosynthesis have the dual purposes of capturing solar energy and destroying water molecules to create ATP and NADPH. Following that, the light-independent processes employ these two energy-storing molecules.
Fixation, reduction, and regeneration are the three fundamental phases that make up the light-independent processes, also referred to as the Calvin cycle.
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if the volume of a cell increases its surface area relative to volume will
a. decrease
b. increase to lesser degree
c. remain the same
d. increase proportionally
e. increase to a large degree
Answer:
decrease
Explanation:
if the volume of a cell increases its surface area relative to volume will decrease
i hope this helps
14. In guinea pigs, brown fur is dominant over white. Two guinea pigs mate and half of their offspring are brown and half are white. What are the genotypes of the parents?
15. The ability to taste PTC is dominant. If two heterozygous tasters have children, what percentage will be non-tasters?
16. In rabbits, brown is dominant over white. If two rabbits mate and have 30 brown offspring and 10 white offspring, what are the genotypes of the parents?
17. A red flower and a white flower produce pink offspring. What type of inheritance is this?
If two pink flowers cross-pollinate, what will be the phenotypic ratio of the offspring?
18. A white cow and a red cow produce roan offspring. What type of inheritance is this?
What two parents would make the highest percentage of roan offspring?
19. If offspring inherit an allele for curly hair, and an allele for straight hair, their hair is wavy. What type of inheritance is this?
If a woman with wavy hair mates with a man with straight hair, what percentage of their
offspring will have straight hair?
14. In guinea pigs, brown fur is dominant over white. Two guinea pigs mate and half of their offspring are brown and half are white. What are the genotypes of the parents? Bb and bb.
15. The ability to taste PTC is dominant. If two heterozygous tasters have children, what percentage will be non-tasters? There is a 25% chance of having children that are non-tasters.
16. In rabbits, brown is dominant over white. If two rabbits mate and have 30 brown offspring and 10 white offspring, what are the genotypes of the parents? To predict the results of the offspring from a cross between brown heterozygous rabbit and a white homozygous rabbit, a punnet square can be drawn as follows:
b b
B Bb Bb
b bb bb
The results from the punnet square show that there is 2:2 ratio that the offspring will be brown colored or white colored. The genotype of the rabbits will either be heterozygous brown i.e. Bb or homozygous white bb.
there is a 50% chance that the offspring will be brown rabbit and there is also a 50% chance that the offspring can be a white rabbit.
17. A red flower and a white flower produce pink offspring. What type of inheritance is this?
If two pink flowers cross-pollinate, what will be the phenotypic ratio of the offspring? All the offspring would be of pink color. Let R represents the allele for red color of flower
r represents the allele for white color of flower
Here R and r can occur co dominantly thereby producing pink color flower with genotype "Rr"
Now , it is given a cross is carried out between a red flowering plant "RR" and a white flowering plant "rr".
The cross between the two parents is represented as below-
R R
r Rr Rr
r Rr Rr
Thus, all the offspring would be of pink color
18. A white cow and a red cow produce roan offspring. What type of inheritance is this?
What two parents would make the highest percentage of roan offspring? When a white cow (CwCw) is mated with a red cow (CrCr), they produce a red and white, or roan cow (CwCr). When the white cow and the roan cow are mated, a half of offspring will be white and half-roan cow will be produced with ratio of 1:1.
19. If offspring inherit an allele for curly hair, and an allele for straight hair, their hair is wavy. What type of inheritance is this?
If a woman with wavy hair mates with a man with straight hair, what percentage of their
offspring will have straight hair? If one parent has curly hair and the other has straight hair, each offspring will inherit one of each allele from parents. All offspring will have wavy hair.
I hope this helped you and Merry Christmas!
The vasa recta have the net effect of concentrating solutes in the interstitial fluid of the renal medulla.
a. True
b. False
It is true, the vasa recta have the net effect of concentrating solutes in the interstitial fluid of the renal medulla.
The capillary networks which supply blood to the medulla, known as the vasa recta, are highly permeable to solutes and water. The vasa recta, like the Henle loop, forms a parallel set of hairpin loops inside the medulla. The vasa recta not only transports oxygen and nutrients to the medullary nephron segments, but they also remove the water but instead solute that these nephron segments continuously add to the medullary interstitium.
Flow determines the ability of a vasa recta to maintain this same medullary interstitial gradient. The medullary gradient is dissipated by a significant increase throughout vasa recta blood flow. Reduced blood flow, on the other hand, reduces oxygen delivery to a nephron segments within in the medulla.
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What description best matches the function of stereocilia?
description most closely resembles how stereocilia perform. In hair cells, bending causes depolarization or hyperpolarization.
Depolarization is the process of bringing a cell's barrier potential to a higher positive value. Repolarization is the process through which the membrane potential shifts from a high to a net negative. The inner membrane has become less negative after depolarization. When voltage-gated sodium channels open, sodium ions ions rush into a neuron, causing depolarization. The potassium ion channels open and the na+ channels shut to cause repolarization. Depolarization is a positive change from the resting potential achieved by increased permeability to an ion with a Nernst potential above the RBP.
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what is the best glassware for performing small chemical reactions?
PLEASE HELP!
which came first P or K?
(image attached)
Answer: K
Explanation: K is on a lower AND upper layer than p, therefore since k is under p it came first.
Who do the sheep in Animal Farm represent in the Russian Revolution?
The sheep are part of the massive propaganda machine set up by Stalin as he rose to power in Russia, and they are also the people who were swayed by that propaganda. Instead of thinking for themselves, they simply repeat slogans over and over.
"It was noticed that the sheep) were especially liable to break into 'Four legs good, two legs bad' at crucial moments in Snowball's speeches," Napoleon says. Later, when Napoleon announces that he will abolish public meetings, he uses the sheep to chant and drown out the four pigs who protest.
The sheep are extremely easy to manipulate because they are, well, sheep-like. When the pigs start walking on two legs at the end of the novel, Squealer teaches the sheep a new chant: "Four legs good, two legs better."
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The structural formula of an unsaturated fatty acid resembles the following diagram. A chain of 7 C atoms has the left end double-bonded above to O and single bonded below to O H. The fourth and fifth C are double-bonded to each other and have H above but not below; all other C's have H above and below, and the right-end C has H to the right. Which of these is a geometric isomer of the above compound? A chain of 7 C atoms has the left end bonded above to O H and double bonded below to O. The fourth and fifth C are double-bonded to each other and have H below but not above; all other C's have H above and below, and the right-end C has H to the right. A chain of 7 C atoms has H to the left, above, and below, except the third and fourth C are double-bonded to each other and only have O above; the final C in the chain has no H, but is double bonded above to O and single bonded below to O H. A chain of 7 C atoms has the left end double-bonded above to O and single bonded below to O H. The fourth and fifth C are double-bonded to each other. The fourth C has H above only, and the fifth C has H below only; all other C's have H above and below, and the right-end C has H to the right. A chain of C atoms has H above, below and to the right; the left most C has instead O double-bonded above and O H single-bonded below,
It is possible to categorise all of the double bonds in unsaturated fatty acids as either odd- or even-numbered double bonds.
With 17 carbon atoms, what fatty acid is it?
Acrylic acid
A fatty acid called stearic acid has 17 carbons in a linear chain in addition to a carboxylic acid group. It is referred to as a saturated fatty acid because it is linked to as many hydrogen atoms as possible. Many animal and vegetable fats and oils can be used to make stearic acid. In its ambient state, it is a waxy solid.
What qualities do unsaturated fatty acids have?
Unsaturated fats, which are liquid at room temperature, are thought to have a range of positive health effects, including lowering blood cholesterol levels and reducing inflammation and cardiac rhythm disturbances
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Answer:
C
Explanation:
Read the passage to answer the question. Even though scorpions are related to spiders, there are many differences between the two organisms. One difference is that scorpion young do not hatch from eggs as spiders do. Scorpions are born live, two at a time, and they immediately crawl onto the mother's back for protection and care. They remain there for two weeks as they grow big enough to take care of themselves. Question Scorpion cells undergo aerobic respiration, just as human cells do. Which substance is released during a scorpion's aerobic respiration? Responses oxygen oxygen ATP uppercase A T P carbon dioxide carbon dioxide nitrogen
Answer:oxygen is used and ATP is made
Explanation:
What are the three 3 examples of exercises that develop cardiovascular endurance?
The three examples of exercises that develop cardiovascular endurance are : walking, cycling and swimming.
What are some cardiovascular endurance activities?Activities like aerobics, rowing, stair climbing, hiking and many types of dancing are aerobic activities. Sports like soccer, basketball, squash and tennis can also improve your cardiovascular fitness.
Cardiovascular endurance can help you in performing exercises or movements over extended periods. Working on your endurance improves the efficiency of your exercise routine and also helps in keeping your body healthy. You can raise level of cardiovascular endurance by doing exercises that increase heart and breathing rates. According to experts, aerobic exercise is the important part of physical fitness.
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pls answer as soon as possible
Among all the statements that are given in the question are true except the statement that the DNA lagging strand moves away from the helicase. The correct answer is statement number 5.
What are helicases ?These are the enzymes that bind and remodel nucleic acid and nucleic acid protein complexes.
DNA helicases are the enzymes that are playing a role in the separation of two strands and when the two strands are separated in that case the two strands are basically separating or disrupting the structure of the DNA helix.
To unwind duplex of DNA, DnaB helicase has a requirement a 5'-overhanging single strand of DNA where helicase is 5' to 3' in the helicase that is travelling along the lagging strand as it is unwinding duplex of DNA. Various helicase, which are said to be dimeric where it travels from 3' to 5' direction along the leading single strand.
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difference bettween star and protostar?
Answer:
A protostar looks like a star but its core is not yet hot enough for fusion to take place. The luminosity comes exclusively from the heating of the protostar as it contracts. Protostars are usually surrounded by dust, which blocks the light that they emit, so they are difficult to observe in the visible spectrum.
Explanation:
A protostar is not considered a star until it gets its energy from nuclear fusion instead of gravitational contraction. Gravitational contraction is the process of a cloud's gravity overcoming its internal pressure and causing a collapse.
A protostar is the stage in a star's life before it is hot enough to fuse hydrogen (13 million K). Fusion is the opposite idea to the atomic bombs dropped on Japan. Those bombs split atoms (specifically U-235?), where as in fusion, atoms are fused together. Protostars are simply out hot enough to fuse Hydrogen, and therefore are not main sequence stars like our sun.
Main sequence stars are stars that fuse hydrogen and exhibit a state of "Hydrostatic Equilibrium". Hydro-what? HE (as I'll call it) is where the fusion in a stars core counter acts the force of gravity attempting to compress the star.
Protostars do not exhibit this characteristic, rather they are in a state of collapse until they are compressed to a point where pressure is high enough to have a temperature high enough to fuse Hydrogen.
Protostars do fuse protons to Deuterium (a isotope of helium) but don't worry about this.
Protostars are technically stars, but I think you were asking how they defer from other stars.
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State what kind of reaction this is and how can you tell?
Answer:
I believe this reaction is also a chemical reaction because there is an enzyme being used, and enzymes catalyze chemical reactions by decreasing the activation energy.
Explanation:
Enzyme-is the rectangular multicoulored bit below the green rectangle in the first phase
substrate-the green rectangle in the first phase
enzyme-substrate complex- the combined enzyme and substrate in the second phase
active site-the indent in the multicoloured rec bit below green rectangle which attracts the suntrate and eventually houses it with its complementary shape and charge
products-are the two green squares that are produced into the reaction
the type of reaction is catalysis-breaking down of enzymes
What age is perfect to get a tattoo?
The perfect age to get a tattoo is 18 years.
Because the age of consent in the United States is generally between 16 and 18, the average age to get a tattoo is 17 and a half years old. Many individuals will dissuade kids from having tattoos, but they rarely explain why.
Because a minor's brain is still maturing, their decisions might be impulsive. They may come to regret their physical alterations, but it is equally conceivable that they will not. It's difficult to say, and it's better to be safe than sorry.
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What will be the length of mercury column in a barometer tube when the atmospheric pressure is?
The length of mercury column in a barometer tube when the atmospheric pressure is 75 cm of mercury will be 86.6 cm.
An instrument known as a barometer is used to measure the air pressure in a specific environment. Weather changes in the short term can be predicted by pressure tendency. To identify surface troughs, pressure systems, and frontal borders, surface weather analysis use a variety of air pressure data. A mercury column whose height can be precisely measured is balanced by atmospheric pressure in a mercury barometer. Mercury barometers are frequently adjusted for the local gravity value and the surrounding temperature in order to boost their accuracy.
So, in question, for same pressure at that height, original height 76 cm is to be maintained by mercury.
L sin 60 = 76 cm
L = 76/ sin 60
L= 86.6 cm
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0.5 M Glucose
1 M Glucose
The solution of the cell is:
Answer:
Π=CRT
Explanation:
If a true-breeding line is allowed to self-fertilize for several generations, the resulting offspring will have ______.
If a true-breeding line is allowed to self-fertilize for several generations, the resulting offspring will have the same traits as the parents.
A true breeding plant is one that produces only offspring with the same characteristics after self-fertilization. Genetically similar and possessing the same genes for the desired qualities are true-breeding organisms. These types of creatures have homozygous alleles.
In other words, both parents have the same genetic makeup. When plants self-pollinate, genuine breeding takes place since only offspring of the same variety are produced.
True breeding organisms have identical alleles for each desired attribute and are genetically identical. These creatures have homozygous alleles.
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(b) Many insects use litter on the soil surface as a habitat and for nutrients. Discuss how the invasion of earthworms is likely to change the forest food web. (2 points)
Earthworms are part of a special group of species that eat dead or decaying organic matter called decomposers. Earthworms are very important in the forest food web because they recycle the energy, and help us to start all over again.
What are earthworms?An earthworm is described as a terrestrial invertebrate that belongs to the phylum Annelida exhibiting a tube-within-a-tube body plan; they are externally segmented with corresponding internal segmentation; and they usually have setae on all segments.
The invasion of earthworms burrowing activities mix the soil and improve the flow of air and water through the underground world. By eating dead organic material from the soil surface, dragging it down into the soil, digesting it, and then leaving their droppings, they redistribute nutrients throughout the soil.
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What are the types of homeostasis?
There are three types of homeostatic regulation in the body, which are:
Thermoregulation. OsmoregulationChemical regulation.Thermoregulation :Thermoregulation is a mechanism by which mammals maintain body temperature with tightly controlled self-regulation independent of external temperatures. Temperature regulation is a type of homeostasis and a means of preserving a stable internal temperature in order to survive.
Osmoregulation :Osmoregulation is the process of maintaining salt and water balance (osmotic balance) across membranes within the body. The fluids inside and surrounding cells are composed of water, electrolytes, and nonelectrolytes. An electrolyte is a compound that dissociates into ions when dissolved in water
Chemical regulation: In chemical regulation, substances called hormones are produced by well-defined groups of cells and are either diffused or carried by the blood to other areas of the body where they act on target cells and influence meta bolism or induce synthesis of other substances.
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What are 2/3 physical activities that are examples of muscular endurance?
Activities that build muscular endurance include long-distance running, cycling, or swimming, along with circuit training and bodyweight exercises
What is muscular endurance ?A muscle's or a set of muscles' capacity to repeatedly contract against a force for an extended length of time is known as muscular endurance. You could perform more repetitions the more muscle endurance you had.
The term "muscular endurance" describes a muscle's capacity to endure prolonged periods of repeated contractions against opposition. Long-distance running, cycling, or swimming, as well as bodyweight exercises and circuit training, are exercises that increase muscle endurance.
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What taste good or bad to us is based purely on our biology?
We have culture, not just biology, to enable us to flourish in diverse environments. This results in a great deal of diversity.
Hence, the given statement is False.
Taste is one of the five traditional senses, along with hearing, sight, touch, and smell. Sweet, salty, sour, bitter, and umami or savory have traditionally been the five basic taste qualities.Culture is made up of two basic components: ideas and symbols on the one hand, and artifacts (material objects) on the other. The first type, known as nonmaterial culture, consists of a society's values, beliefs, symbols, and language.
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A car owner decides to leave his car outside on a cold winter day. the next morning, the driver noticed ice on the windshield, a product of deposition. choose the best reason explaining this phenomenon. what happened?
The next morning, the driver noticed ice on the windshield, a product of deposition due to cold air sinking.
Metal and glass, for example, cool down more quickly than other materials. The sun warms the earth and the items surrounding it during the day. The heat is then released at night by radiation.
Because your automobile is composed of materials that shed heat rapidly, the temperature of your windshield may drop to 32 degrees or lower faster than the temperature of its surroundings. This is also why, even when the air temperature is above freezing, ice can accumulate on your windshield.
Furthermore, frost occurs on the grass or trees but does not form on other things. This is due to the fact that cold air is heavier (in plain terms) and will sink. As a result, the coldest air is on the ground.
Condensation on your automobile windows can be caused by temperature, humidity, dew point, or a combination of the three. A car defroster may also assist clean the windshield and rear window fast by automatically starting the air conditioning.
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Is meiosis always haploid?
No, meiosis is not always haploid. It produces haploid cells in organisms with sexual reproduction, but in asexual organisms, meiosis can produce diploid cells.
What is meiosis?
Meiosis is a type of cell division that produces four daughter cells from a single parent cell, each with half the number of chromosomes as the parent cell. It is a necessary process for sexual reproduction, as it creates the genetic diversity that allows for the development of new organisms.
What are haploid cell?
Haploid cells are cells that contain only one set of chromosomes, typically half the chromosomes of a normal diploid cell. In humans, the haploid number is 23, and the normal diploid number is 46. Haploid cells are important in reproduction, as they are the cells that contain the genetic information necessary to form a new organism.
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What antibodies does a person with B blood type have ?
What are 3 reasons people get tattoos?
3 reasons people get tattoos: The Pain, in memory of a loved one they have lost, and To Express Creativity.
Tattoos are a form of self-expression, and various individuals interpret them differently. This essay will look into tattoo psychology and what they reveal about the individuals that wear them.
Tattoos are a means for some people to bring their imaginations to reality. In some people's imaginations, their tattoo is a tangible manifestation of their greatest wishes.
Surrealism tattoos, for example, infuse imagery into the skin. It's like walking around with a work of art on your body that only you can see and comprehend. It makes the user feel more linked to their imagination in some ways.
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the insertion of the teres minor is on the __________.
Answer:
the insertion of the teres minor is on the abdomen.
Explanation:
It is located in the lower abdomen, near the navel.