Explanation:
Distance = 826m
time = 70second
velocity = distance/ time
v = 826/70
v = 11.8m/sec
Different kinds of substances have different properties. Compare and contrast the electrical properties of salts, metals, and acids.
Salts, metals, and acids are three different types of substances exhibiting unique electrical properties.
Thus, salts are ionic compounds and exhibit electrical properties as they have both positively charged ions and negatively charged ions. They can dissociate in solution into their constituent ions to conduct electricity, but they can not conduct electricity in the solid state.
Like salts, metals also conduct electricity due to their free-moving electrons. They have high electrical conductivity and are used in electrical wiring and other applications. Acids release hydrogen ions when dissolved in water which allows them to conduct electricity because the hydrogen ions move freely and carry an electrical charge when acids are dissolved in water, thereby, exhibiting electrical properties.
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Made up of hard, keratinized cells and grow from a nail root under the cuticle.• Protect the distal portions of the digits enhance precise movement of the digits aid in picking up objects.
The description you have given is of human nails. Nails are made up of hard, keratinized cells and grow from a nail root located under the cuticle. They protect the distal portions of the digits (fingers and toes), enhance precise movement of the digits, and aid in picking up objects. Nails also serve cosmetic purposes and can be decorated or painted in various ways.
Unit 3 Forum Topics
If you read the Chapter 7 "Chapter Mystery," you saw an example of the relationship between
biological science and medicine. Give another example of how the ongoing study of biology is
important to the practice of medicine.
Although we often discuss cancer as if it were a single disease, there are many different types of
cancer, each with its own specific treatments. Complete an internet search on one type of cancer
and summarize the current methods of treatment that are available for it.
Directions
Write a 250-word response (or longer) to one of the topics above and post it in the discussion forum. Please include the topic written out at the start of your post. Your writing should have at least a semi-formal tone: pay attention to the standard conventions of English writing (grammar, mechanics, spelling, and so on).
After you post your first response, stay and write a 100-word response to another student's post. Please remember to be kind with your responses, and remember that each student is entitled to his or her own personal opinion. Do your best to write a meaningful, thoughtful response.
We can see here that the study of biology has led to the development of new drugs and treatments for diseases. For example, the study of the human genome has led to the development of new drugs for cancer and other diseases.
What is biological science?Life itself is the subject of biological research. The study of all living things, from simple single-celled creatures to intricate multicellular organisms, is included in this large field of study.
Scientists who specialize in biology research the composition, mechanism, behavior, and evolution of living organisms. They also research how living things interact with their surroundings.
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I need help with the true false section
On the circulatory system and the lymphatic system:
Gas exchange by diffusion occurs between the lungs and the aorta.Arteries always carry oxygenated blood. FalseSomeone who is type AB blood can receive blood from all people.FalseThe heart regulates its own beating through the nodal system. TrueLymph vessels carry blood back to the heart. TrueThe pressure inside veins is greater than the pressure inside arteries. FalseThe brain requires less oxygen and blood flow than other tissues. FalseThe smooth muscle wall of the arteries is much thicker than that of veins. TrueThe myocardium is the thick cardiac muscle layer that is part of the heart walls. TrueBoth the circulatory system and the lymphatic system travel in a closed, one-way loop. FalseWhat occurs in the circulatory system and the lymphatic system?Although they both play a role in the movement of fluids throughout the body, the lymphatic and circulatory systems serve distinct purposes. The blood vessels, which include arteries, veins, and capillaries, are used to deliver oxygen, nutrition, hormones, and waste items throughout the body.
The heart serves as the body's pump to move blood around. On the other hand, the lymphatic system is responsible for removing extra fluids, waste, and other detritus from the human tissues. In order to help the body fight infections, the lymphatic system transports lymphocytes, a kind of white blood cell, to numerous locations throughout the body.
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what would happen if the sun's light was blocked for a year
Answer:
the end of life on Earth probably within a matter of years or decades
Explanation:
A permanent blockage of sunlight, or if our star went dark, would pretty much mean the end of life on Earth probably within a matter of years or decades (cave dwelling organisms and/or deep ocean critters that derive their energy from ocean volcanic vents might survive).
SOMEONE PLEASE
Scientists are optimistic about the use of gene therapy to treat genetic disorders, such as cystic fibrosis. If gene therapy is as successful as possible, what is its expected action and benefit for the patient?
A. Gene therapy introduces a new gene to the patient and temporarily improves the symptoms of the disorder.
B. Gene therapy deactivates the defective gene and permanently improves the symptoms of the disorder.
C. Gene therapy removes the defective gene and permanently improves the symptoms of the disorder.
D. Gene therapy replaces the defective gene and cures the patient of the disorder.
Answer:
D. Gene therapy replaces the defective gene and cures the patient of the disorder.
Explanation:
In many popular fictional movies and books, future projections of the earth (and other fictional planets) show a world devoid of plants, with civilization bustling with activity throughout a worldwide city of skyscrapers hundreds of stories high.
Based on your reading about photosynthesis and cellular (aerobic) respiration, is this future world possible? Explain why it is or is not possible in terms of energy flow in the biosphere.
1 is known as the "Father of Genetics". He was the first to show how traits are 2__ from parent to offspring. He used _
3
plants
in his experiments. In this plant, the sexual reproductive structures are completely enclosed within the flower, making this plant _4__.
Sex cells (egg and sperm are called .
_5_.
6_
occurs when the
sperm fuses with the egg. The "Father of Genetics" used a process called
_7_
when he wanted to breed one plant with a different
plant. When he bred true-breeding tall plants with true-breeding dwarf plants, all of the resulting offspring were _
. But when
these hybrids were allowed to self-pollinate, it resulted in offspring that were _
_9_
and
_10_. He realized this was caused by one
11 that occurred in two contrasting forms called.
_12_
I am not sure they are right but here u go:
1. Charles Darwin
2. inherited
13. Phenotype
14. Heterozygous
15. Receive
20. Nucleus
22. Homozygous
23. Dominant
4. A piece of potato is placed in an open container of 0.22M sucrose solution. After a few minutes, you measure the mass of the potato again and no mass change has occurred. What is the solute potential the potato cells if the temperature is 27°C?
The solute potential of the potato cells in the given scenario is approximately -6.572 atm·L/mol at a temperature of 27°C.
To determine the solute potential of the potato cells in the given scenario, we need to use the formula for solute potential:
Ψ = -iCRT
Where:
Ψ is the solute potential
i is the ionization constant (which depends on the number of particles into which the solute dissociates)
C is the molar concentration of the solution
R is the ideal gas constant
T is the temperature in Kelvin
First, let's convert the temperature from Celsius to Kelvin:
T(K) = T(°C) + 273.15
T(K) = 27°C + 273.15 = 300.15 K
Since sucrose does not ionize in solution, i = 1.
The concentration of the sucrose solution is given as 0.22 M.
The ideal gas constant, R, is approximately 0.0831 L·atm/(mol·K).
Plugging in the values into the formula:
Ψ = -1 * (0.22 M) * (0.0831 L·atm/(mol·K)) * (300.15 K)
Calculating this equation gives us the solute potential of the potato cells.
Ψ = -1 * (0.22) * (0.0831) * (300.15) = -6.572 atm·L/mol
Therefore, the solute potential of the potato cells in the given scenario is approximately -6.572 atm·L/mol at a temperature of 27°C.
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Where does the Completion digestion occurs
Answer:
The completion digestion of food occurs primarily in the small intestine. After partially digested food passes from the stomach to the small intestine, it undergoes further breakdown and absorption of nutrients.
The small intestine is the main site for enzymatic digestion and nutrient absorption in the digestive system. It has specialized structures called villi and microvilli that increase the surface area for efficient absorption.
Enzymes secreted by the pancreas and the small intestine itself, such as lipase, amylase, and proteases, further break down complex molecules into simpler forms for absorption into the bloodstream.
The small intestine plays a crucial role in the final stages of digestion and nutrient absorption in the human body.
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Explain the differences and similarities between the Digestive system and the Excretory system. Be sure to specify what they are individually responsible for. helppp
Answer:
The excretory system removes waste from the body. remove waste from the blood. The digestive system breaks down the food you eat into nutrients that provide energy and building materials for cells. The digestive and excretory sytems work together to process the food that you eat.
Add the complementary bases to the following nitrogen bases
The chart shows the intake (consumption levels) of proteins in 14-18yr olds. For which proteins is there the greatest difference between the recommended intake and the actual intake?
What is a recommendation of a food that teenagers could eat more of to fix this difference?
The chart highlights the importance of consuming a variety of protein sources in the diet, particularly those that are under-consumed like seafood and nuts/beans, to meet recommended nutrient intake levels.
The chart displays the protein intake of 14-18 year olds, broken down by different protein sources, compared to the recommended intake. Based on the chart, it appears that there is a significant difference between the recommended intake and the actual intake of seafood and nuts/beans.
The recommended intake for seafood is 8 oz per week, but the actual intake is only 2.8 oz per week. For nuts/beans, the recommended intake is 5 oz per week, but the actual intake is only 1.9 oz per week. These differences suggest that teenagers are not consuming enough of these protein sources in their diets.To address this difference, teenagers could incorporate more seafood and nuts/beans into their diets.
For example, they could try eating salmon or tuna instead of red meat or chicken a few times a week, or they could snack on almonds or peanuts instead of chips or candy. Other sources of protein that are already being consumed at recommended levels, such as poultry and eggs, could be maintained in the diet to ensure a balanced intake of nutrients.
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Which statements about mutations are true ? Check all that apply
Mutations cannot be passed from generation to generation, mutations are rare, mutations are always harmful , Germaine mutations occur in body cells,
Mutations are rare and can occur in body cells.
Mutations are changes in the DNA sequence of an organism.
They can occur in both body cells and reproductive cells, meaning they can be passed down from generation to generation.
Mutations can be beneficial, harmful, or have no effect on an organism's fitness.
While some mutations can lead to diseases, others can help an organism adapt to its environment or improve its chances of survival.
However, most mutations are rare and do not have a significant impact on the organism.
Therefore, it is not accurate to say that mutations are always harmful.
Germline mutations specifically occur in reproductive cells and can be passed down to offspring.
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What topic should I pick to study for my environmental science project
You should pick the rainforest
Because you can tell all kinds of information about the rainforest on how wet it is what species live their and how they interact with one another and how they protect themselves.
The beak of this finch may be described as a gasping bill . Which of the following is the most likely function of this kind of beak
Answer:
to pick up the insect to eat
Explanation:
i hoped this helped
QUESTION 8 Why transport system in animals is more complicated than plants?
Answer:
The transport system in animals is more complex than in plants due to several reasons:
Specialized Circulatory System: Animals have a well-developed circulatory system, which includes a heart, blood vessels, and blood. This system is responsible for transporting oxygen, nutrients, hormones, and other vital substances throughout the body. In contrast, plants primarily rely on passive transport mechanisms, such as diffusion and osmosis, to move water, minerals, and nutrients through their tissues.
Active Movement: Animals can move from one location to another, which requires a more efficient and rapid transport system. They need to distribute oxygen and nutrients to their cells to support energy production and remove waste products like carbon dioxide. The complexity of animal bodies, including tissues, organs, and systems, necessitates a specialized transport system to deliver essential substances to all parts of the organism.
Increased Metabolic Demands: Animals typically have higher metabolic rates compared to plants. This increased metabolic activity generates more waste products that need to be eliminated. Animals also require a continuous supply of oxygen for respiration, which necessitates an efficient transport system to deliver oxygen to their tissues. Additionally, animals need to regulate their body temperature, which requires the distribution of heat throughout the body.
Specialized Organs and Tissues: Animals have specialized organs and tissues that perform specific functions, such as the lungs for gas exchange, the digestive system for nutrient absorption, and the kidneys for waste removal. These organs require a well-developed transport system to supply them with the necessary substances and remove waste products efficiently.
Rapid Response to Environmental Changes: Animals often need to respond quickly to changes in their environment, such as predators, prey, or changing resource availability. A complex transport system allows for rapid circulation of signals, hormones, and nutrients to enable swift responses to external stimuli.
Blood Cell Specialization: Animals have specialized blood cells, such as red blood cells for oxygen transport and white blood cells for immune response. These cells require a circulatory system to transport them to the appropriate sites within the body, where they perform their functions.
Explanation:
In a woodland, the bark on most of the trees was dark gray. Over time, a population of moths that lived in the woodland gradually changed from light gray to dark gray.
Which ,begin emphasis,best,end emphasis, describes how this change in the moth population was the result of natural selection?
In the given scenario, where the bark on most trees in a woodland was dark gray, and the population of moths that lived in the woodland gradually changed from light gray to dark gray over time, natural selection best explains how this change in the moth population was the result of natural selection.
Natural selection is the mechanism of evolution where the traits that help organisms survive and reproduce become more common in a population over time. The best explanation of how this change in the moth population was the result of natural selection is provided as follows: Initially, the moth population was light gray, and the tree bark was dark gray.
This meant that the light gray moths were easily seen by predators on the dark gray bark, whereas the dark gray moths could blend in with the dark bark, making them difficult to see by predators. As a result, the light gray moths were more vulnerable to predation, whereas the dark gray moths had better survival rates.
This difference in survival rates led to a higher proportion of dark gray moths in the population over time. This change in the moth population from light gray to dark gray was due to natural selection because it involved the differential survival and reproduction of individuals with certain traits.
The dark gray moths had a higher fitness (i.e., ability to survive and reproduce) than the light gray moths, and this led to the gradual increase in the frequency of the dark gray trait in the population. Therefore, this scenario is a classic example of how natural selection can lead to the evolution of populations over time.
In conclusion, the change in the moth population from light gray to dark gray in the woodland was the result of natural selection because it involved the differential survival and reproduction of individuals with certain traits. The dark gray moths had a higher fitness than the light gray moths, and this led to the gradual increase in the frequency of the dark gray trait in the population over time.
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The moon and sun appear to move in the sky this is due to
Answer:
The Correct answer is due to the rotation of the earth around its axis
Help help help please
In the Netflix show "You," the character Love Quinn attends therapy sessions with her therapist, Dr. David Fincher. Dr. Fincher uses cognitive-behavioral therapy techniques to help Love identify and challenge her negative thoughts and beliefs about motherhood.
During the session, Dr. Fincher asks Love to identify the thoughts that come to mind when she thinks about being a mother. Love expresses her fear of not being a good mother and worries about passing on negative traits to her child. Dr. Fincher helps Love challenge these thoughts by asking her to consider evidence that contradicts her negative beliefs and to reframe them in a more positive light.
Through this cognitive-behavioral therapy technique, Love is able to shift her perspective on motherhood and feel more confident in her ability to be a good mother. This scene demonstrates the use of cognitive-behavioral therapy in addressing anxiety and negative beliefs.
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In which situation would it be least likely for a scientist to revise her experimental methods?
O if her results support her hypothesis
if her data do not support her hypothesis
if no conclusions can be drawn from the data
O if results are the same after repeating the procedure
Save and Exit
Next
3
Submit
Answer: if her data do not support her hypothesis (Option B.)
Explanation:
If a scientist has a hypothesis, and the data does not support her hypothesis, then it would be likely to revise the experimental methods.
The book, Structure of Scientific Revolutions written by Thomas S. Kuhn and he put forward three key concepts: normal science, scientific revolution, and _____________________. give an example of research/study that we discussed in the class and that could be credited as scientific revolution: _____________________.
The book, Structure of Scientific Revolutions written by Thomas S. Kuhn and he put forward three key concepts: normal science, scientific revolution, and paradigm shift.
One example of research that could be credited as a scientific revolution is the discovery of the structure of DNA by James Watson and Francis Crick. Their work represented a significant shift in the field of biology, as it led to a new understanding of genetics and the mechanisms of heredity.
Prior to their discovery, the prevailing view in biology was that genetic information was carried in protein molecules. Watson and Crick's discovery challenged this paradigm and ushered in a new era of research focused on DNA and its role in genetics. This revolution in biological understanding had a profound impact on fields such as medicine, agriculture, and biotechnology.
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When do some cells undergo programmed death? O When they are diseased. O When they are differentiating. O When they are healthy. O When they are dividing.
A concept which suggests that a historical event affects a cohort differently than it affects subsequent cohorts because of the life phase in which it occurred is called
In a given population 12% of the people have blue eyes (the recessive phenotype). What is the frequency [percentage] of the recessive allele in this population's gene pool?
The frequency of the recessive allele in this population's gene pool is 24%.
How to calculate allele frequency?To calculate the frequency of the recessive allele, use the following formula:
Frequency of recessive allele = 2 x (percentage of people with recessive phenotype)
In this case, the percentage of people with the recessive phenotype is 12%. So, the frequency of the recessive allele is:
Frequency of recessive allele = 2 x (12%)
= 24%
This means that 24% of the people in this population carry the recessive allele for blue eyes, even if they do not have blue eyes themselves. The other 76% of the people in this population do not carry the recessive allele for blue eyes.
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Which of the following is correctly describes porosity and permeabilty
Answer:Which of the following is correctly describes porosity and permeabilty
Explanation:
Which of the following processes is decreased when many trees are removed
from an area?
OA. Transpiration
OB. Runoff
OC. Evaporation
D. Precipitation.
The process that is most likely to be decreased when many trees are removed from an area is A. Transpiration.
Transpiration is the process by which plants, including trees, release water vapor into the atmosphere through their leaves. Trees play a crucial role in the water cycle by absorbing water from the soil through their roots and releasing it into the air through transpiration. This process contributes to the overall moisture content in the atmosphere and influences weather patterns and precipitation.
When many trees are removed from an area, the transpiration rates are significantly reduced. This is because there are fewer trees to uptake water from the soil and release it into the atmosphere. As a result, there is less water vapor being added to the air, which can have several effects.
Therefore, the correct answer is A. transpiration.
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what did the incorrect theory of alchemy lead scientist to discover
The incorrect theory of alchemy, which aimed to transmute base metals into noble metals like gold and achieve immortality, led scientists to discover several important aspects of chemistry.
Alchemists' experiments advanced chemistry, even though they never fulfilled their aims. They perfected distillation, filtration, and crystallisation, which are still used today.
Alchemists studied the characteristics and interactions of many substances, establishing the framework for chemical elements, compounds, and reactions. Alchemy accidentally advanced chemical understanding and experimental methods.
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The amount of cortex in the postcentral gyrus devoted to a given body region is proportional to ___________; the amount of cortex in the precentral gyrus devoted to a given body region is proportional to ___________.
1) How richly innervated & sensitive that region is; the # of muscles & motor units in that region
2) The # of muscles & motor units in that region; how richly innervated & sensitive that region is
3) The size of the body region; the size of the body region
4) The # of receptors in that body region; the # of receptors in that body region
The amount of cortex in the postcentral gyrus devoted to a given body region is proportional to how richly innervated and sensitive that region is; the amount of cortex in the precentral gyrus devoted to a given body region is proportional to the # of muscles & motor units in that region, option 1 is correct.
The postcentral gyrus, located in the parietal lobe, is responsible for processing sensory information, including touch, pressure, temperature, and pain, from different parts of the body.
The amount of cortex in the postcentral gyrus devoted to a particular body region is proportional to the density of sensory receptors and the complexity of neural pathways that convey sensory information from that region to the brain, option 1 is correct.
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Hypothesize which embryo is from each of the following organisms:
Human, Fish, Chick, Rabbit, Salamander, Tortoise. (You will not lose points
if you get this question wrong, just do your best)
These are my hypotheses for which embryo is from each of the following organisms:
Human, FFish, AChick, DRabbit, ESalamander, BTortoise, CWhat describes these embryos?Human: The human embryo is the most complex of the embryos, with a well-developed head and brain. It also has a long tail, which is a characteristic of all vertebrate embryos.
Fish: The fish embryo is the simplest of the embryos, with a small head and brain. It also has a short tail, which is a characteristic of fish embryos.
Chick: The chick embryo is similar to the tortoise embryo in terms of complexity, but it has a beak and wings. It also has a yolk sac, which provides nutrients to the embryo.
Rabbit: The rabbit embryo is similar to the human embryo, but it has a fur coat. It also has a placenta, which provides nutrients to the embryo from the mother.
Salamander: The salamander embryo is similar to the fish embryo, but it has legs. It also has gills, which allow it to breathe underwater.
Tortoise: The tortoise embryo is similar to the chick embryo, but it has a shell. It also has a long tail, which helps it to balance.
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