Answer: Carbon atoms are unique because they can bond together to form very long, durable chains that can have branches or rings of various sizes and often contain thousands of carbon atoms. Silicon and a few other elements can form similar chains; but they are generally shorter, and much less durable.
Explanation:
Table B. Identities of Rock Samples
Rock sample
1
2
3₂
4
5
6
Name of rock
Changes in pH alters the enzymatic activity by modifying electric charges
A True
B) False
Changes in pH alters the enzymatic activity by modifying electric charges hence the statement is False.
Briefing:The activity of the enzyme slows down and finally stops when the pH value deviates from the optimum range. The substrate houses the enzyme's active site.
What generates an electric charge?When electrons are added to or taken away from an object, an electrical charge is produced. An object acquires a negative charge when electrons are introduced to it because electrons have a negative charge. An object acquires a positive charge when its electrons are removed.
What is an example of an electric charge?The ability to conduct electricity is a characteristic of many fundamental, or subatomic, components of matter. As an illustration, protons and neutrons both have positive charges but electrons have a negative charge.
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Describe Lamarck's theory of inheritance of acquired characteristics. Why is it invalid?
The theory of evolution proposed by Lamarck tells us that living beings were not created from nothing but were the result of evolution from much simpler beings.
How does evolution occur according to Lamarck?These evolutionary characteristics were obtained when an individual adapted to a change in situation or environment that occurred through a habit. He says then that evolution occurs by characters acquired through life, these are passed to its germ line and so little by little the evolution is taking place.
This theory was not taken into account since it is impossible to transfer acquired characteristics from the somatic line to the germ line. Giving then as erroneous this theory proposed by Lamarck.
Therefore, we can confirm that the theory of evolution proposed by Lamarck tells us that living beings were not created from nothing but were the result of evolution from much simpler beings.
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The lacrimal gland is also known as the tear gland. It provides the proper ingredients and most of the volume of the tears that bathe the ____ of the eye. Secretions here contain an antibacterial enzyme called ____ , and also antibodies that attack ____ before they enter the body.
Lacrimal glands are the tear glands. These secrete tears that bathe the orbit of the eye. These secrete enzyme called Lysozyme which is antibacterial and secretory IgA antibodies that attack viruses and bacteria.
What are Lacrimal Glands?
Lacrimal glands are the exocrine glands that secrete tear. These are found in most terrestrial vertebrates and some marine mammals. These are present on the orbit above the lateral end of each eye. These secrete watery fluid which cleanses and protects the eye surface.
Secretions of the lacrimal gland contain enzymes such as lysozyme, amylase, secretory IgA antibody, etc. These protect the eye by attacking the bacteria and virus.
Therefore, proper functioning of the lacrimal gland is important for the protection and lubrication of eye.
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Choose
an animal that interests you.
Explain how you know that this
organism is an animal.
Explanation:
Elephant:- warm blood and bulky in mass have visible ears, are property of Mammel, Mammel is branch of animal
PLEASE HELP (PSYCH)
Question 3 (1 point) When using the correlational research design, researchers report a number called the "correlation coefficient" This number indicates strength & direction of the relationship between two variables and falls between -1 and +1. Choose the correlation coefficient that demonstrates a moderate relationship showing fewer depression symptoms in people who report higher community engagement? a) -0.61 b) -0.19 c) +0.17 d) +0.61
The correlation coefficient that demonstrates a moderate relationship showing fewer depression symptoms in people who report higher community engagement is +0.61. That is option D.
What is correlation coefficient?Correlation coefficient is a measure that is used statistically to know the extent of change that can be brought about on a variable through the change of another variable that is related to it.
The correlation coefficient is measured by dividing the covariance by the product of the two variables' standard deviations.
This number indicates strength & direction of the relationship between two variables and falls between -1 and +1.
There are various types of correlation coefficient which are the negative correlation coefficient and the positive correlation coefficient.
An example of a positive correlation coefficient is +0.6 which shows that there are fewer depression symptoms in people who report higher community engagement.
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Please help me answer this question as soon as possible!!
You observe two beakers containing clear liquid and ice cubes. In the first beaker, the ice cubes are floating. In the second, the ice cubes are on the bottom of the beaker. Write a hypothesis to explain the difference in your observations about the two beakers.
When water freezes into ice the hydrogen bonds formed allow them to be spaced farther apart, making them take more space and the overall density decreases, so ice float in the water.
What is density ?The density of can be referred as the mass per unit volume which means the ratio between mass and volume, where how much stuff an object has in a unit volume.
It is a measurement of matter, where it mainly presents the mechanism of matter is bind together, put forwarded by the Greek scientist Archimedes
Density = Mass/Volume
When ice melts its surface area increases so it is present at the bottom of the beaker.
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Which piece of information provided the stimulus for the shift from traditional classification to modern classification? An understanding that organisms have not changed over time
Answer:
BRO WE GANSTA
Explanation:
There was an accident in the lab, and a sample had the label removed. The sample tested negative for the Benedicts test, Biuret test, and Sudan Red Test. It tested positive for the Lugol test. What type of macromolecule is available in the sample?
Select one:
a.Monosaccharides
b.Lipids
c.Proteins
d.Starches
Type of macromolecules available in the sample is Starches.
Macromolecules are very large molecules that are important for biophysical processes such as proteins and nucleic acids. It is made up of thousands of covalently bonded atoms. Many macromolecules are polymers of small molecules called monomers.
Biopolymers are abundant, naturally occurring large cellular components that perform a variety of functions essential for the growth and survival of organisms. There are four main classes of biopolymers: carbohydrates, lipids, proteins and nucleic acids.
Proteins, carbohydrates, lipids and nucleic acids are the four most important macromolecules. They perform important functions such as providing structural support, providing storage fuel, storing and retrieving genetic information, and accelerating biochemical reactions.
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How does an organism composed of relatively small cells have an advantage over one made of larger cells?
The surface area-to-volume ratio of a cell diminishes with growth. If the cell were in the form of a cube, the same reasoning would hold true. The plasma membrane won't have enough surface area if the cell enlarges too much to accommodate the volumetric rise in diffusion rate.
In other terms, a cell gets less effective as it develops. One technique to increase efficiency is to divide, while another is to create organelles with specific functions. Smaller single-celled creatures have a high surface-to-volume ratio, which enables them to rely on material and oxygen diffusion into the cell (and waste diffusion out) to survive. This method can be more effective if the objects have a larger volume to surface area ratio. Larger animals need specialized organs (such as the lungs, kidneys, and intestines) that efficiently increase the surface area accessible for exchange activities, as well as a circulatory system to transport materials and heat energy between the organism's surface and core.
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Which of the following substancces does NOT bioaccumulate and, therefore, is NOT biomagnified through a food chain in the environment?
A. DDT
B. mercury
C. lead
D. oxygen
The substance that does not bioaccumulate and therefore, is not bio-magnified through a food chain in the environment is oxygen (option D).
What is biomagnification?Biomagnification is the process, in an ecosystem, in which a higher concentration of a substance in an organism is obtained higher up the food chain.
The contaminants that can be bio-magnified in a polluted environment are usually heavy metals such as mercury, arsenic, and pesticides such as polychlorinated biphenyls and DDT.
Oxygen is a naturally occurring gas that is beneficial in the environment, hence, does not bioaccumulate in living organisms as it is readily used.
Therefore, oxygen does not bioaccumulate and biomagnify through a food chain in the environment.
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ASAP!! I WILL GIVE BRAINLYIST
Which hypothesis is NOT testable?
Plastic should be recyclable.
Plastic has a low boiling point.
Plastic has a high melting point.
Plastic does not break down in the environment.
Might Be wrong but I think C
how is gallium obtained and separated from nearby substances?
PLLSSS HELP
Gallium(III) hydroxide in potassium hydroxide solution can be electrolyzed to produce the metal.
What is the purpose of gallium?It is crucial for Blu-ray technology, mobile phones, blue and green LEDs, and touch switches with pressure sensors. Most metals are easily alloyed with gallium. Particularly in low-melting alloys, it is employed. Because of its high boiling point, it is perfect for recording temperatures that would cause a thermometer to vaporize.
Does gallium react with gold?Furthermore, because gold and gallium can produce alloys with low melting points, it is not surprising that a significant amount of the underlying GaAs dissolves during the alloying cycle. The end result is a contact with good electrical characteristics but one that is quite atypical morphologically and challenging to duplicate.
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whats the treatment of gout
Answer:
Non-steroidal anti-inflammatory drugs (NSAIDs) are usually recommended as the first treatment for gout. They work by reducing pain and inflammation during an attack. NSAIDs used to treat gout include naproxen, diclofenac and etoricoxib.
What is the purpose of scientific argumentation?
A scientific argument is a method that researchers use to direct their work. In order to ultimately improve rational explanations and experimental designs, scientists point out flaws and limitations in other people's arguments. Evidence-based arguments is the term for this technique.
The aim of scientific reasoning is to assess the reliability and validity of methods and results. It would be appropriate to accept the scientific research if one could validate and demonstrate all of the points made. This part is structured around the four components of scientific argumentation
EvidenceReasoningStudent interactionCompeting claimsThe method by which research, as a field, creates and greater integration, is through scientific debate. Other scientists assess and analyze the assertions, supporting evidence, and explanations of that evidence when scientists make arguments in favor of novel theories.
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What does this quote mean? " "This would provide a selective advantage for the brightest males which could lead to a runaway process where males would get brighter and brighter with each generation. Even females who bucked the trend would be at a disadvantage for, if they chose to mate with plainer males, they risk producing drab sons who would be less likely to be picked as mates in their turn".
The meaning of the given quote: This would provide a selective advantage for the brightest males...Even females who bucked the trend would be at a disadvantage for, if they chose to mate with plainer males, they risk producing drab sons who would be less likely to be picked as mates in their turn" is given below.
This means that in the process of mating, the brightest males would be selected first which leads to a selection advantage for them and even if females decided not to pick the brightest males, this would be to their disadvantage as their offspring would be likely to be selected last, if at all.
What is a Quotation?This refers to the use of inverted commas to show the direct words of a speaker in a given sentence.
Hence, we can see that The meaning of the given quote: This would provide a selective advantage for the brightest males...Even females who bucked the trend would be at a disadvantage for, if they chose to mate with plainer males, they risk producing drab sons who would be less likely to be picked as mates in their turn" is given below.
This means that in the process of mating, the brightest males would be selected first which leads to a selection advantage for them, and even if females decided not to pick the brightest males, this would be to their disadvantage as their offspring would be likely to be selected last, if at all.
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A sample of an unknown liquid has a volume of 24.0 mL and a mass of 6 g. What is its density? Show your work or explain how you determined this value. I believe you would divide the mass x volume, 24,0 divided by 6
which = 4 GIVING 31 POINTS ANSWER FAST!!!!!!!!!!!!!!!!!!
The density of the unknown liquid sample will be 4.0 g/.mL
What is density?The density of a substance is the ratio of the mass of the substance to its volume.
This is mathematically expressed as:
Density = mass/volume.
In this case:
Volume of unknown liquid sample = 24.0 mL
Mass of unknown liquid sample = 6 g
Density of the unknown liquid sample = 24.0/6
= 4.0 g/mL
Thus, the density of the unknown liquid sample us 4.0 g/mL
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Another student thinks a constant should be the speed that the skateboard travels. Is this correct? Explain.
A student thinking that a constant should be the speed that the skateboard travels is not correct.
What is Speed?This is referred to as the rate of change of position with time and the unit is meter per second (m/s).
Speed = distance/time
For a body to have a constant speed, then it means that the sum of all the external forces acting on it is zero. This isn't possible because the numerous forces such as friction, drag etc won't always equal zero which therefore means the student's reasoning is false and not correct and is the most appropriate choice.
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does phloem gives mechanical support to plant
Answer:
no
Explanation:
Phloem won't give any mechanical strength to the plants. Xylem and Phloem are the parts of the vascular bundle. Vascular bundles are defined as the strands of conducting vessels having xylem and Phloem to supply water from roots and food prepared by leaves to the remaining parts of the plant.
What part of the cell is responsible for letting water into our cells when dehydrated?
Answer:
The part of a cell that contains RNA that helps in protein synthesis. The large and abundant vesicle of a plant cell is called a vacuole. It contains fluids and helps in storage of substances, building material, and water. The cell wall, central vacuole, and chloroplasts are the distinguishing parts of a plant and animal cell.
what is photosynthesis ?explain it with vivid examples
photosynthesis is the process by which green plant use energy from sunlight to manufacture their own food by combining carbon dioxide , water and mineral salt
example plants, algae (diatoms, phytoplankton green algae, euglena
How does the carbon cycle and ocean acidification impact coral reefs, and how is human activity having an effect? Relate this to the carbon cycle.
How do graded potentials lead to the generation of an action potential in a single
neuron?
When a graded potential causes hyperpolarization in a neuron, an action potential is not occur, where as If a graded potential causes depolarization, an action potential is more likely to occur.
What are the types of neuron ?The neurons are the basic nerve cell of the nervous system where the presynaptic neuron emits the nerve impulse and the postsynaptic neuron receives this impulse.
The function of neurons can be Sensory which handle information from the sensory organs like skin, eyes, ears, nose and Motor which emit signals from the brain and spinal cord to the muscles.
Other neuron are Interneurons form a bridge connection between two neurons depending on how distant the neurons are from each other.
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The map below shows the locations of three cities: Los Angeles, California; Oklahoma City, Oklahoma; and Myrtle Beach, South Carolina. The map also includes information about prevailing wind directions (dotted lines) and the location of cold water (solid lines) and warm water (dashed lines) ocean currents.
Rank the cities based on their summer high temperatures, with 1 being the coolest summer, and 3 being the warmest summer.
According to map summer high temperature the correct series of countries are Oklahoma, Oklahoma city, California, South Carolina, Los Angeles, and Myrtle Beach. The most hottest city is Oklahoma.
What is map?Map is defined as a sketch or representation of various countries, routes, rivers, boundaries, oceans, mountains, and building, as well as temperature on a paper which is designed and sketched in such a way that a person can take help to understand the various related topics such as temperature, weather, rivers and routes through it.
The countries which are very near to the equator are considered to be the warmest countries and the people or citizens of that countries are having high percentage of melanin in their body.
Therefore, According to map summer high temperature the correct series of countries are Oklahoma, Oklahoma city, California, South Carolina, Los Angeles, and Myrtle Beach. The most hottest city is Oklahoma.
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A solution with a pH of 3 has how many more protons in it than a solution with a pH of 7?
a.
10 times
b.
100 times
c.
1000 times
d.
10,000 times
Answer:
An acid is used to bring the pH of a solution from pH 9 to pH 6 the many times more acidic is the final solution than the initial solution is that of option b. 10 .
Which is greater acidic a pH of 6 or a pH of 8?
A pH much less than 7 is acidic. A pH more than 7 is simple. The pH scale is logarithmic and as a result, every entire pH fee underneath 7 is ten instances greater acidic than the subsequent better fee.pH much less than 7 is acidic. A pH more than 7 is simple. The pH scale is logarithmic and as a result, every entire pH fee underneath 7 is ten instances greater acidic than the subsequent better.
The pH is a degree of the attention of hydrogen ions, the acidity or alkalinity of a solution. The pH scale is commonly among zero and 14. Aqueous answers at 25 ° C with a pH of much less than 7 are acidic and simple or alkaline solution are people with a pH of more than 7.
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Explanation:
Which of the following conclusions can you draw about early human migrations? (4 points)
Group of answer choices
A) Humans migrated to Europe and North America at the same time.
B) Humans migrated to Asia last.
C) Humans migrated to North and South America last.
D) Humans migrated to Australia before they migrated to Europe.
The conclusions which can be drawn about early human migrations is that humans migrated to north and South America last and is denoted as option C.
What is Migration?This is the process which involve the movement of people from one location to another in other to settle down there which could be as a result of availability of resources, job opportunities etc.
It is believed that Humans migrated to North and South America last which is in the period of at least 20,000 years ago and is later than other regions which is why it was chosen as the most appropriate choice.
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How to create rain?
The answer is HIGH, COLD,LOW
The answer should be cold
Describe the importance of DNA and RNA as molecules essential for the transmission of genetic information.
Explanation:
Dna is the genetic informational molecular and its important to identify an organism off another and Rna is a part of the Dna itself
If the rosehip neuron is present in humans what does it show us or explain?
Answer: Rosehip appears to be an inhibitory neuron, which regulates the flow of information to certain parts of the brain. Saplakoglu reports the rosehips seem to connect to pyramidal neurons, an “excitatory” neuron that makes up about two-thirds of the neuron cells in the neocortex.
Explanation:
what are two ways in which termites actually contribute to plant growth
Answer:
1. Termites help to aerate the soil and improve drainage.
2. Termites also help to break down organic matter in the soil, which release nutrients that are essential for plant growth.
Explanation:
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