Answer:
C. Adding one more proton and neutron.
Explanation:
The atomic number is the number of protons in the nucleus of an atom. Atomic mass is the number of protons and neutrons.
Convection currents occur:
A:only in liquids
B:when a dense substance is warmer than a less dense substance
C:in both liquids and gases
D:weakly in solids
Answer:
c
CCCCCCCCCCCC
this is my answer
Explanation:
What happens to magma during volcanic eruption?
Answer:
lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface. Magma that has erupted is called lava. Some volcanic eruptions are explosive and others are not.
Researchers studying a small milkweed plant population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. In this population, the genotypic frequencies are TT= 56, Tt = 28, and tt = 16. For each problem below, show all of your work. A. Calculate the observed allele frequencies. B. Calculate the expected genotypic frequencies. C. Is this population in HW equilibrium? If not, explain what may cause it to not be (for example, is one level of toxin more adaptive than others?).
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Write down the clinical findings which are least suggestive of left-sided heart failure?
Answer:
Adverse heart conditions do not occur in isolation. It is usually accompanied by other risk factors, like coronary artery dysfunction, diabetes, high blood pressure, etc.
In addition to the above, the following factors are indicative of left-sided heart failure:
Shortness of breath caused by the collection of fluid in the lungs. Shortness of breath usually becomes pronounced upon physical exertionAn increase in the girth of the torso (mainly the abdomen) due to ascites which is the buildup of fluid in the abdomen.engorged scrotum (in males of course)Explanation:
Left-Sided Heart Failure is simply the inability of the heart to pump oxygen-rich blood into the body.
Blood filled with oxygen is moved from the lungs to the atrium on the left and then to the left ventricle. The blood is then pumped from the ventricle on the left to other parts of the body by a contracting and relaxing action. Left-sided heart failure can be classified into two:
Systolic Failure and Diastolic Failure1. Systolic Dysfunction: When the left ventricle can no longer shrink properly, the pressure with which the heart can pump enough blood into circulation is reduced.
2. Diastolic Dysfunction: This occurs when the left ventricle can no longer relax as it ought to due to the hardening of the muscle.
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Each statement below can be described as an observation, fact, or conceptualization. Indicate which of these three possibilities best characterizes each statement and explain your choice
a. All 100 observers agreed the sun rises in the east every day
b. This green apple is sour
c. Planets move from west to east against the background of fixed stars because they are revolving around the sun, just as the Earth does.
d. The United States fought in Vietnam to preserve democracy from communist aggression
e. All green apples are sour.
Answer:
Explanation:
A fact is something that occurs in the real world. Something that can be verified that is whether correspond to experience.
a. All 100 observers agreed the sun rises----this is a fact
Observation tend to acquire information from a primary source. In living beings, observation make use of the senses, it can be perception and may require data recording via the use of scientific instruments.
This green apple is sour--- this is an observation
Conceptualization involves writing out clearly the key concepts. It involves what comes to the mind after thinking about a subject.
d. The United States fought in Vietnam to preserve democracy from communist aggression --- conceptualization
What specific part of the cell/structure allows the mucus secretions to be thick and viscous rather than fluid (i.e., is it a membrane channel, organelle or something else)? Please be specific and describe the step-by-step mechanism whereby this altered structure/part of the cell causes the secretions to contain less water.
Answer:
The CFTR behaves like a channel for chlorine. Its dysfunction affects both the transport of this ion and other ions and the transport of water, which causes a thickening of secretions, an alteration of mucociliary transport and local defenses, facilitating bacterial colonization and promoting the release of pro-inflammatory mediators in the airway
Explanation:
CFTR is a protein expressed in the epithelial cells of the respiratory system, pancreas, bile ducts, sweat glands and genitourinary system. It is made up of a single chain made up of 1,480 amino acids. It contains 12 hydrophobic regions embedded in the lipid membrane and acts as a channel for chlorine.The highest levels of expression of the CFTR protein are found in serous cells of the submucosal glands of the proximal airway. In them, Cl- is released to the outside. In addition, there are channels for Na +, through which this ion is also secreted in the same direction. These movements cause the displacement of water and also of mucins, originating in the submucosal glands, allowing their presence on the surface of the airway. For all this to occur normally, a basolateral Na + - K + - ATPase cotransporter must function, another basolateral cotransporter formed by Na +, K + and 2 Cl-, which allows the latter to enter the cell, and an apical CFTR channel through which it exits the Cl- of the cell towards the acinar lumen. Na + leaves the cell following Cl- by a paracellular pathway accompanied by water. When CFTR malfunctions, Cl- does not exit through this channel and this implies a decrease in Na + and water in the canalicular lumen, with the consequent thickening of secretions.
Hi everyone! What 4+10=
Answer
Hello
how are u
4+10 = 14
When looking at a stalk of celery that has been sitting in red food colored water. Sarah notices the celery has red lines running through it. Why is this possible? Question 14 options: The roots absorbed the water. The xylem transported the water through the stem and to the leaves of the plant. The phloem transported the water through the stem and to the leaves of the plant The stomata allowed the water in.
Answer:
It is The Xylem Helping The Food Coloring.
Explanation:
I am taking the quiz right now. Also, I had a glossary with me.
Good Day,
Answer:
The Xylem cheeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeez
What ion forms when oxygen reacts?
Answer:
Oxygen is typically observed observed in the -2 oxidation state, in the form O2-, but it can also form other ions such as peroxide, O22-, and superoxide, O2-. With different possible oxidation states, many possible molecular compounds can be formed when an element reacts with oxygen.
QUICK!!!!! 100 points
How will the changes to the biosphere affect the geosphere, atmosphere, and hydrosphere?
How will the changes to the geosphere affect the atmosphere, hydrosphere, and biosphere?
1: Hydrosphere causes erosion of geosphere through running water and precipitation. Biosphere breaks down rock of the geosphere (plant roots), but when it comes to soil, minerals of the geosphere feed the plants. ... Atmosphere gets water vapor from hydrosphere.
2: That precipitation connects the hydrosphere with the geosphere by promoting erosion and weathering, surface processes that slowly break down large rocks into smaller ones. ... Both the geosphere and hydrosphere provide the habitat for the biosphere, a global ecosystem that encompasses all the living things on Earth.
HOPE THIS HELPS!!
How will the changes to the biosphere affect the geosphere, atmosphere, and hydrosphere?
Answer: That precipitation connects the hydrosphere with the geosphere by promoting erosion and weathering, surface processes that slowly break down large rocks into smaller ones. Both the geosphere and hydrosphere provide the habitat for the biosphere, a global ecosystem that encompasses all the living things on Earth.
How will the changes to the geosphere affect the atmosphere, hydrosphere, and biosphere?
Answer: There are four "spheres" that make up our planet. They are not spheres themselves, but they are part of the structure of the earth, they are: atmosphere, lithosphere, hydrosphere and biosphere.
When we study the composition of the earth system, we have in mind that they are not "static." On the contrary, they are very dynamic elements, so that one interferes with the other. Example: Rainwater alters the relief, which alters the surface composition and, depending on its shape, even influences the climate, and so on.
Atmosphere: It is the layer of air that surrounds our planet. It is made up of gases - notably oxygen, nitrogen and others - and is also the layer responsible for protecting the planet as well as climate change.
Lithosphere: Also called the Earth's crust, the lithosphere is the solid surface layer of our planet, consisting of rocks, soil and landforms. It is where we live, build our societies, grow our food, and carry out our economic practices.
Hydrosphere: It is the Earth's water layer, being composed by rivers, lakes, oceans and seas, besides the present humidity and that also influences the climate. The existence of water on our planet is vitally important for maintaining life.
Biosphere: It is the layer of life, involving all beings that inhabit our planet, which obviously includes humans. The biosphere can only exist from the combination of the other spheres mentioned above.
Imagine that you’ve prepared a hanging drop slide but were called out of the room for an hour before being able to look at it. When you return, examination of the slide shows motility. Would you be satisfied with this result? What if the slide showed no motility when you returned?
Answer and Explanation:
If I have prepared a hanging drop slide to examine bacteria's motility, and I called out of the room for an hour, before the examination. After one hour, when I came back to the laboratory, and I examine the slides. If the examination of the slide show motility. I would be satisfied with this result because it means that bacteria can move in the surrounding medium. On the other hand, if the slide's examination shows no motility, it means that bacteria cannot move in the surrounding medium. Bacteria are divided into two groups based on motility. Motile bacteria show motility in the surrounding medium, in which they were suspended, while the non-motile bacteria will show no movement. The examination of the motility of bacteria is done under a microscope by using oil immersion. Hanging drop method is the best method for bacteria identification.
Identify two examples of environmental factors that may impact salivary peroxidase activity. Describe how each of the environmental factors would affect the reaction rate of the enzyme.
Predict the effects of a long-time cigarette smoker and the impacts on activity levels of salivary peroxidase. Provide reasoning to justify your prediction.
Answer:
Examples of environmental factors that may alter salivary peroxidase include periodontitis, oral hygiene, presence of heavy metal ions, bacteria (e.g., Streptococcus gordonii), anaerobic conditions, temperature, pH, etc.
Explanation:
Peroxidase is an enzyme found in all aerobic cells that act to convert toxic hydrogen peroxide (H2O2) into dioxygen (O2) and water (H2O). This enzyme plays an important non-specific defensive role against proliferating micro-organisms that cause periodontal diseases such as periodontitis, which is a serious inflammatory disease affecting the tissues around the teeth. The most common environmental factors influencing the development of periodontitis include oral hygiene, smoking and age. In this regard, it has recently been shown that there is a positive correlation between salivary peroxidase activity and periodontal health, especially in non-smoker individuals. In consequence, it is expected that smoker individuals are more prone to suffer periodontal diseases by reduction of the salivary peroxidase levels.
• 11. Thinking about trophic levels, the type of energy we use from a natural resource comes through a transfer of what, which can also be classified as radiation?
Answer:
Solar energy
Explanation:
There are different kinds of energy, and one of them is radiation. By concept, radiation refers to the emission, propagation, and transference of energy in the form of electromagnetic waves or particles. Living beings depend on solar energy from their origins.
Throughout the trophic web, there exists a process of energy transference through the different trophic levels, in which every organism feeds on the preceding one and becomes food for the next one. Producers take solar energy and transform it into chemical energy, which is the one from one level to the other.
Energy flow: From the whole quantity of solar energy that reaches the earth's surface, only 0.1 or 1% is absorbed by autotroph organisms or producers.
From this input of solar energy, it begins a unidirectional energy flow through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is finally dissipated in the environment.
At each trophic level, it occurs an energy transfer from one level to the next, with only 10% being usable in each of them. This assessment is called "The 10% rule". This is, as a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time.
The progressive reduction of energy determines the number of trophic levels (4 or 5).
What event in the passage complicates the conflict Neto faces?
The players who agreed to quit with Neto change their minds.
The other players feel embarrassed in front of Neto.
The players who refuse to quit love football more than Neto.
Four players commit to working with Neto to fight racism.
Answer:
The players who agreed to quit with Neto change their minds.
Explanation:
Whenever Neto was going to quit the team he changed a few people's minds on their opinions on racism which those few people ended up quitting either way.
The players who agreed to quit with Neto change their minds.
What are the events that install the battle at the beginning of the story?Starting up occasion: both a concept or a movement introduces a vital battle/hassle and units plot events into motion. As a result of the initiating event, the protagonist (predominant man or woman) faces a hassle or is operating closer to a purpose.
What is the occasion in the tale?Activities are matters that show up in a tale. The order wherein the activities manifest is called a sequence.”
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How do you think that glucose / sugar (food) gets to the other parts of the tree that need it?
Answer:
Alongside xylem is another system of tubes called phloem, which transports the glucose formed in photosynthesis into the branches, fruit, trunk and roots of the tree.
Explanation:
In a breed of dog, the gene for black fur is dominant and the gene for brown fur is recessive. Two dogs with black fur are bred. One of the offspring has brown fur. What is the most likely explanation for the brown fur?
Answer:
The dog received two recessive genes for brown fur.
Explanation:
what combines with hydrogen during aerobic cellular respiration
Answer:
Oxygen combines with hydrogen. I think that's the correct answer... sorry if I'm wrong :[
Explanation:
draw the structure of gand? 5 marks
Explanation:
what is gand????????
........
describe the ways in which carbon is critical to life.
Answer:
This is partially due to the ability of carbon to quickly form bonds with other atoms, giving stability to the form and role that biomolecules, such as DNA and RNA, can take, which are important for life's distinguishing features: development and reproduction.
Explanation:
55. Which of the following are considered natural satellites?
A. Moons
B. Planets
C. Comets
D. All of the above
Both Duchenne muscular dystrophy and color blindness are caused by recessive alleles. DMD, unlike color blindness, nearly always occurs in males. Explain why.
Answer: Although both are X-linked recessive conditions, and therefore more likely in males, with the single X-chromosome. The recessive allele in colour blindness occurs at a higher frequency in the population and is a mild condition. Thus colour blindness does occur to a lesser extent in females because it needs the double recessive condition. DMD is a severe, disabling condition with a limited lifespan, and recessive allele frequency much lower, so the double recessive condition in females is very rare.
Explanation: DMD is an X-linked recessive, “nearly always in males” suggest that it also occurs due to a new mutation or some rare condition e.g. double recessive from an affected father and carrier mother, or inactivation of the normal gene in a heterozygote. It is also found that the defective allele is not completely recessive and that female carriers may exhibit mild to moderate effects.
colour blindness is polygenic, although the genes are all X-linked. It is more common in males than females. Females can carry two recessive alleles and so express the phenotype, but this is uncommon because the frequency of the recessive gene is low.
There are similarities in that both are X-linked recessives, therefore commonly expressed in males, who only have one X chromosome. The gene frequency of the colour blindness recessive is much higher than that of DMD, so the double recessive condition, which affects females, is more likely to be seen with colour blindness. In addition, DMD is a severe condition associated with disability and limited lifespan, which reduces the probability of mating between an affected male and carrier female
Decide if the following statement is an example of a personal opinion or empirical evidence: Evaporation only happens in the ocean and not rivers and streams.
Answer: This is opinion because it is not evidence based. It ignores empirical evidence to the contrary and is not based on objective observation.
Explanation: From a physical perspective, we know that liquids evaporate from an open surface because random motion sometimes gives a molecule enough kinetic energy to overcome attractive force. This is somthing that we can readily observe. A puddle of water from river, sea, pond or lake in an impermeable container will dry up if the surface is exposed to the air.
The difference between fresh water and seawater is what is dissolved in it and if anything, it would be more difficult for seawater to evaporate.
What four types of plate movements can cause earthquakes?
Answer:
Hi, I take Environmental Science, and there are only 3 types of plate movements if I'm not mistaken. They are:
1) Divergent.
2) Convergent.
3) Transform.
I'll attach a diagram below of the types of plate movements.
Landsat satellites receive reflected energy emitted from Earth's surfaces that include wavelengths of
A.the visible spectrum
b. visible and infrared light
C.visible light and gamma waves
D. Infrared and ultraviolet light
Answer : B ) Visible and infrared light
Which statement is true about soil compaction?
A)
It results from human activities that press down on soil.
B)
It increases pore spaces between soil particles.
C)
It increases the soil’s ability to absorb and store water.
D)
It decreases run off.
E)
It decreases flooding.
Answer:
d
Explanation:
the soil has alot of ad wedd======-------dghi
Soil compaction is results from human activities that press down on the soil. Therefore, the correct option is A.
External forces that often result from human activities, such as large machinery, construction, or excessive foot traffic, exert pressure on the soil surface and induce soil compaction. These forces can compress soil particles, restrict pore spaces, and damage soil structure and health.
Soil compaction can reduce water infiltration, limit root growth, reduce soil fertility, and increase surface runoff, among other problems. As a result, option A appropriately points to human activity as the root cause of soil compaction.
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Matching assignment. Read each organelle description and match up the function. _____ Nucleolus A. Sac that stores materials. _____ Golgi complex B. Small organelle that synthesizes proteins. _____ Ribosome C. This organelle contains the DNA for the cell. _____ Nucleus D. This organelle makes ribosomes. _____ Cell Membrane E. A jelly-like substance found within the cell membrane. _____ Vacuole F. Tubes found within the cell that allows proteins to move. _____ Endoplasmic Reticulum G. This organelle produces energy. _____ Mitochondria H. Produced by the Golgi Complex and contains enzymes. _____ Lysosome I. Membrane that selects what enters and exits the cell. _____ Cytoplasm J. This organelle packages and ships proteins.
How does the structure of a phospholipid allow it to function as a cell membrane component? A Phospholipids are very polar therefore they disperse easily in water. B The inner non-polar region of the phospholipid bilayer is extremely attractive to water molecules, making the cell membrane semipermeable. с The non-polar regions of the phospholipid tails orient toward each other with the polar regions of the phospholipids pointing toward the inside of the cytoplasm or towards the outside of the cell. D Phospholipids can shift the polar regions and the non-polar regions so they can frequently rotate within the plasma membrane.
Answer:
C. The non-polar regions of the phospholipid tails orient toward each other with the polar regions of the phospholipids pointing toward the inside of the cytoplasm or towards the outside of the cell.
Explanation:
Cell membrane is the outer covering of the cell of living organisms, and according to the fluid mosaic model, the cell membrane is composed of phospholipids and protein. The phospholipid layer of the cell membrane is composed of a hydrophilic (water-loving) phosphate head region and hydrophobic (water-fearing) fatty acid tail region.
In the structure of the membrane, the non-polar regions of the phospholipid tails orient toward each other with the polar regions of the phospholipids pointing toward the inside of the cytoplasm or towards the outside of the cell in contact with water. This enables the phospholipid layer function in selective permeability as a cell membrane component.
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Give 5 facts about Native species.
Answer:
Native plants are those that occur naturally in a region in which they evolved.
They are the ecological basis upon which life depends, including birds and people.
A species that has been observed in the form of a naturally occurring and self-sustaining population in historical times.
A species or lower taxon living within its natural range (past or present) including the area which it can reach and occupy using its natural dispersal systems.
A native species is one that is found in a certain ecosystem due to natural processes, such as natural distribution and evolution.
Explanation:
;)
What might prevent two groups of organisms from reproducing together ?
Answer:
A negative power source or a negative bond
Explanation:
when 2 organisms can't reproduce together is bc it's nonliving or has a negative bond
Prezygotic and postzygotic barriers keep species apart from one another and prevent two groups of organisms from reproducing together.
How are organisms reproducing?Acting before and after the development of a zygote, respectively, these barriers prevent creatures of different species from mating to create fruitful offspring. These obstacles continue to keep species' reproductive isolation.
Pre-zygotic and post-zygotic barriers are the two main categories of restrictions on reproduction. Post-zygotic barriers impede hybridization after fertilization, and pre-zygotic barriers do the same.
Therefore, these barriers, which take effect both before and after the development of a zygote, prevent creatures of different species from mating to generate fruitful offspring.
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What might happen to the ecosystem of the rainforest if the population of spider monkeys were removed? Correct answer gets brainlyest
Answer:
Rainforest wildlife species would be affected, and forests would be made up of different tree communities.
Explanation:
I don't know if its correct answer, but Good luck
And sorry if its wrong
