What are adaptations?
Which describes a characteristic of branched polymers? A.They have only one start point and many end points. B.They have many start points as well as many end points. C.They have many start points and only one end point. the more detail the better thank you
Answer:
B.They have many start points as well as many end points.
Explanation:
In a branched polymer side chains grow out of a main chain. The side chains are also made of same units as the main chain. These branches are a result of side reactions that occur during polymerisation.
The branches may serve as the starting or the end point of the chain. They may also be branched further. So the starting and the ending point of a branched polymer completely depends on the reference point. Branched polymers have reduced density because of lower packing efficiency.
If the earth did not have an atmosphere, the sky would appear _____ during the day.
Some organisms undergo asexual reproduction through mitosis, while others reproduce sexually, and their cells undergo meiosis to produce gametes. If there were drastic changes in temperature in an ecosystem, which process do you predict would be most beneficial to a species? Mitosis: it causes genetic mutations, which may be favorable to the species. Meiosis: it increases genetic variation, which helps ensure the species will survive. Meiosis: it produces more daughter cells, which increases the population of the species. Mitosis: it produces identical offspring, which increases genetic variation.
Answer:
Meiosis: it increases genetic variation, which helps ensure the species will survive.
Explanation:
Crossing over and genetic recombination happen during meiosis and both processes ensure that the daughter cells are genetically variant from the parent cells.
Crossing over and genetic recombination increase the genetic variability of a population and consequently increases their chances of survival in case of changes to the environment.
is Zinc is a silver-gray metal qualitative, quantitative, or neither
Describe the pathway of scientific inquiry by which henri becquerel discovered that uranium gives off a type of radiation
Final answer:
Henri Becquerel's discovery of uranium radiation began with the observation that a uranium compound darkened a photographic plate through black cloth, leading to experiments that established the phenomenon as nuclear radioactivity. This discovery laid the foundation for nuclear physics, contributing to our understanding of atomic structure.
Explanation:
The pathway of scientific inquiry by which Henri Becquerel discovered that uranium gives off a type of radiation began in 1896, as a result of his curiosity and thorough experimentation. Becquerel found that a uranium compound placed near a photographic plate could darken the plate, even when wrapped in black cloth, indicating the emission of unseen penetrating rays. This accidental discovery led him to further investigate, finding that the effect was specific to uranium compounds, and not affected by external conditions such as light blockage, temperature, or pressure. These penetrating rays were later understood to originate from the nucleus of the atom, marking the discovery of nuclear radioactivity, an area that would be further explored by Marie Curie and her research on radium and polonium.
Through experimenting with different conditions and materials, Becquerel was able to conclude that the radiation emitted by uranium was a new type, which he termed radiations. This discovery marked a fundamental shift in understanding atomic structure and laid the groundwork for the field of nuclear physics. The radiation emitted by uranium and later studied by the Curies, did not vary with chemical state or physical conditions, indicating a source within the nucleus of the atom, distinct from known electromagnetic and chemical interactions of the time.
In pavlov's "salivating dogs" studies, the salivation triggered by the sound of the tone was the __________.
The release of _____ raises blood pressure and blood sugar levels.
Silt particles are smaller than sand particles. Which of the following statements is true?
A.Silt has a higher terminal fall velocity than sand.
B.Silt has a higher threshold velocity than sand.
C.Silt is more vulnerable to wind erosion than sand.
D.Silt can't be carried by wind, but sand can.
The right answer is C. Silt is more vulnerable...
In geology, a silt is a sedimentary formation whose grains are of intermediate size between clays and sands that is to say between 2 and 63 micrometers (the precise limits may vary somewhat according to the laboratories). A mostly silty deposit may be called silt. In geology, Anglicism silt is often used to designate silts.
The silt is the ultimate product of fluvial erosion of the rocks of the river catchment. The silty particles thus consist of very fine debris of quartz, mica and feldspar, or even clay minerals.
Stringers characterize the loess deposits of loess, also known as "slime plateaus", and are common in alluvial deposits. In the latter case, the silty particles release nutrients which have a major interest for the renewal of soil fertility and therefore for their agricultural exploitation.
Since silt is often suspended in water, it can contribute to its turbidity.
Which stage of the hydrologic cycle can be the most direct cause of algal blooms?
The direct cause of algal blooms is the runoff stage of hydrological cycle. In this stage, excessive precipitation and saturation of water absorption can lead to development of algal blooms.
What is hydrologic cycle?Hydrologic cycle of the water cycle is one of the main biogeochemical cycles of ecosystem. This cycle consists of different stages which are evaporation, condensation, precipitation and collection of water.
The Runoff stage of hydrologic cycle occurs when there is excessive precipitation and the ground is saturated i.e., it cannot absorb more water. The Rivers and lakes are formed as a result of runoff. There is some evaporation from the runoff stage into the atmosphere but for the most water in the rivers and lakes returns back to the oceans.
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What "drives" plate tectonics?
A) lava
B) conduction
C) continental drift
D) heat and convection
Rag the pink labels to the pink targets, indicating the relative concentration of glucose inside and outside the cell. drag the correct white label to the white target, indicating the direction that na+ ions and glucose move through the cotransporter. drag the blue labels to complete the sentences on the right, indicating how na+ ions and glucose move through the cotransporter relative to their electrochemical and concentration gradients.
Answer:
look at the person above me thanks
Explanation:
If an amino acid has a side chain (r group) that is charged (i.e. bears a full + or – charge), which amino acid group would it belong in?
The answer is charged amino acid group.
Grouping of amino acid into one of three categories are only based on its R group. And there is an amino and carboxyl group are present in the amino acid that are ionized so we can say that amino acid is technically charged and there is one thing to remember that Amino acids that are classified as polar, they are not having any charge.
A person undergoes hypnosis, and her hand is put in ice. she does not show signs of being in pain. which of these statements is consistent with the dissociation theory?
Under the dissociation theory of hypnosis, a person may not show pain during hypnosis because of a dissociated state of consciousness where the conscious mind does not fully process pain signals, consistent with research by Ernest Hilgard.
Explanation:The statement consistent with the . In this state, the person's attention is diverted, such that the pain signals are not fully processed by the conscious mind. This concept aligns with Ernest Hilgard's experiments on hypnosis and pain, wherein participants showed a split in consciousness, allowing them to not report feeling pain even though their physiological responses indicated otherwise.
If a cell was observed under the microscope and found to have a rigid cell wall and be green in color that cell is most likely a
Animal cell
Plant cell
Bacterium cell
Algae cell
Plaque consists of a biofilm, with bacteria carefully arranged in a community. what are the advantages of forming a biofilm?
Fainting occurs when there is a temporary reduction of blood flow to the brain. if a child faints, your immediate action would be to:
Final answer:
If a child faints, you should immediately d) Lay the child down in a safe place with the legs elevated to help restore blood flow to the brain. This counteracts gravity, which otherwise could cause blood to pool in the legs, reducing blood flow to the brain and increasing the risk of further fainting.
Explanation:
If a child faints, the immediate action should be to lay the child down in a safe place with the legs elevated. This position helps restore blood flow to the brain, combatting the temporary reduction of blood flow that caused the fainting. When you elevate the legs, gravity aids in returning the blood to the heart and the brain. This can prevent further fainting episodes and help the child recover more quickly.
Experiments showing the effect of gravity on circulation demonstrate why this position is beneficial. Similarly, orthostatic hypotension, a temporary drop in blood pressure when standing up quickly, can cause dizziness because of reduced blood flow to the brain. Lying down and elevating the legs, counteracts the gravitational pull that would otherwise cause blood to accumulate in the legs and lower extremities when standing.
Properly addressing fainting is important because severely low blood pressure can deprive the brain and other vital organs of oxygen and nutrients, potentially leading to a life-threatening condition called shock. Therefore, it's critical to act quickly and correctly in the situation of a child fainting.
Dr. nguyen's experimental rats have learned the location of a food treat in a maze. she removed their hippocampi 3 hours after the rats located the food. what will be the effect on the rat's memory for the food's location?
Which energy production method does not ultimately depend on the sun?
If you look at a plant cell under the microscope what would you notice that is different from an animal cell
how many cells does a fish have?
Do they maintain homeostasis?
In the image below, in which location is limestone formed?
Diagram showing the carbon cycle. At Location A, a river meets an ocean. At Location B, sediments sink to the bottom of the deep ocean. At Location C, green plants perform photosynthesis. At Location D, a factory burns fossil fuels.
Public Domain
A
B
C
D
The location where the limestone is formed in the image below is the location B. Thus, the correct option will be B.
What is limestone?Limestone can be defined as a type of carbonate sedimentary rock which is one of the main sources of material lime. Limestone is composed mostly of the minerals calcite and aragonite, which are the two different crystal forms of CaCO₃. Limestone forms when these two minerals precipitate out of the water which is containing the dissolved calcium.
In the image provided in the question, the location where limestone is formed is the location B, sediments part of the cycle.
Therefore, the correct option will be B.
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What is taher's only wish? what prevents him from realizing his dream? ironically what happens three weeks later?
Uncle Taher’s last dream is to see his son again. Ironically Taher's passport arrives 3 weeks later on the day of his death.
What do you mean by a dream?Dreams include stories and images that our minds create during sleep, they can be entertaining, fun, romantic, disturbing, and frightening.
We may not remember dreaming, but everyone is thought to dream between 3 and 6 times per night, it is thought that each dream lasts between 5 to 20 minutes.
Uncle Taher’s last dream is to see his son again, realizing his dream to see his son again.
Around 95 percent of dreams are forgotten by the time a person gets out of bed. Dreaming can help you learn and develop long-term memories.
Therefore, Taher’s last dream is to see his son again. Ironically Taher's passport arrives 3 weeks later on the day of his death.
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What is a cost of using technology to transport water?
Answer:
Freshwater supplies can be depleted in an area.
Explanation:
When each carbon is bonded with two hydrogen atoms, the chain is ___ with hydrogen.?
How does atp supply energy to power metabolism?
Final answer:
ATP supplies energy to power metabolism by serving as the primary energy currency in cells. It is generated through the metabolism of glucose and releases energy when it is hydrolyzed. This energy is used to fuel various cellular functions.
Explanation:
ATP supplies energy to power metabolism through its role as the primary energy currency in cells. When ATP is hydrolyzed, it releases a phosphate group and forms ADP, releasing energy that can be used for cellular processes. This energy is used to fuel functions such as muscle contraction, nerve cell activity, and absorption of nutrients in the gastrointestinal tract.
Most of the ATP in living organisms is generated through the metabolism of glucose. During glucose catabolism, glucose is broken down through a series of enzymatic steps in glycolysis, producing ATP as a byproduct. The energy obtained from glucose metabolism is used to regenerate ATP and power the multitude of energy-requiring pathways in cells.
Describe the importance of high heat of vaporization to ecosystems. I appreciate your help. ;)
Activation of the sympathetic nervous system question 13 options:
a.increases respiration and decreases salivation.
b.increases respiration and increases salivation.
c.decreases respiration and increases salivation.
d.decreases respiration and decreases salivation. save
Answer:
The answer is A .increases respiration and decreases salivation.
Explanation:
In _____, the Supreme Court ruled that the government may restrict civil liberties when not doing so results in "clear and present danger."
Answer:
Schenck v. the United States.
Explanation:
The clear and present danger was a doctrine adopted by the United States Supreme Court to check in what cases the First Amendment right granted of freedom of speech could be restrained.
The Schenk v. United States case was a landmark decision in 1919. On it, the Court stated that the freedom of speech right could be restrained if the word spoken on the speech represents a "clear and present danger" to society.
Schenk was the general secretary of the U.S. Socialist Party and he rejected the military draft in the country. He printed a lot of leaflets that called men to resist the military draft and avoid going to war.
I hope this answer helps you.
Which organelle should be listed under “Plant Only” in the diagram?
Answer:
See the answer below.
Explanation:
The plant cell is an eukaryotic cell with some unique organelles that differentiates it from other eukaryotic cell (animal, fungi and protist's cells). These organelles include:
Large vacuoleChloroplastRigid cell wall made of polysaccharides (cellulose)Hence, these three organelles should be listed separately or in different combinations under plant only.