When a cell is in osmotic equilibrium with the internal environment, there is random movement of water molecules into and out of the cell occurs for water movement through aquaporins.
Water diffuses through a semipermeable membrane as a result of osmosis. In living things, osmosis is crucial because it controls the flow of water into and out of cells. Because tiny molecules may get through the plasma membrane only under certain conditions, the internal makeup of the cell is preserved.
The majority of biological molecules cannot diffuse through the phospholipid bilayer. The plasma membrane creates a barrier that prevents molecules from freely moving between the cytoplasm and the cell's surroundings.
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Question 5 of 25
Which measurements could create more than one triangle?
A. Sides measuring 3 cm, 8 cm, and 15 cm
B. Sides measuring 10 cm and 20 cm and an included angle
measuring 50°
C. Angles measuring 100°, 10°, and 70°
D. Angles measuring 110°, 40°, and 40°
SUBMIT
The measurements that could create more than one triangle are options C and option D.
Explanation: For a triangle to exist, the sum of any two sides of a triangle must be greater than the length of the third side.
In option C, the angles measuring 100°, 10°, and 70° do not satisfy this condition, as the sum of the angles 10° and 70° is less than 100°, making it impossible to form a triangle. However, by rearranging the angles, such as 10°, 70°, and 100°, we can create a valid triangle.
In option D, the angles measuring 110°, 40°, and 40° also violate the condition for a triangle, as the sum of the angles 40° and 40° is less than 110°. However, by rearranging the angles, such as 40°, 40°, and 110°, we can create a valid triangle.
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a. What happened to ecological resources in national parks across the United States when this act
became law in 1916.
Answer:
Explanation:
recover it self
where do land plants get the water that they use in photosynesis
Answer:
Land plants get the water they use in photosynthesis from the soil through their roots.
Land plants obtain water for photosynthesis from the soil, which is absorbed through their roots and transported to the leaves through the xylem.
Land plants obtain water for photosynthesis primarily from the soil. The process involves a series of steps that enable water uptake and transportation within the plant. First, plant roots, equipped with root hairs, extend into the soil and absorb water through osmosis. This occurs because the concentration of dissolved substances, such as minerals, in the root cells is higher than that in the surrounding soil.
Water moves from the roots to the xylem, which is a specialized tissue responsible for transporting water and nutrients throughout the plant. This upward movement is facilitated by a combination of root pressure, capillary action, and most importantly, transpiration. Transpiration is the loss of water vapor from the plant's leaves through small openings called stomata. As water evaporates from the leaf surfaces, it creates a negative pressure gradient that pulls water up through the xylem from the roots.
Once water reaches the leaves, it is utilized during photosynthesis. The water molecules are split during the light-dependent reactions, releasing oxygen as a byproduct and providing electrons for the production of ATP and NADPH, which are essential for the light-independent reactions (Calvin cycle).
In summary, land plants rely on their roots to absorb water from the soil, which is subsequently transported through the xylem to the leaves where it is utilized in the process of photosynthesis.
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PLEASE HELP!!! A scientist concludes that genetic inheritance of a mutated (changed) gene, such as a gene change that creates different-colored organisms in a population, is more beneficial to an organism over time and contributes to biological fitness. Discuss why a scientist would make that claim.
i posted a few min. ago and someone stole 30 points by answering and saying they couldnt help. please answer the question if you can and dont steal my points....
Answer:
When the organism inherits a mutated gene creating new colored organisms into the population, this can increase diversity. As more organisms inherit the same mutation, the population will become more variated, which can increase the organisms abilities to survive and adapt in a changing environment, and also improve the biological fitness of individuals; resulting in allowing more organisms to reproduce successfully.
Explanation:
The “henge” that gave Stonehenge its name was actually added to it hundreds of years after the original stones were placed.
True or False
Mendel first crossed true-breeding plants to produce a second generation, which were then allowed to self-pollinate to generate the offspring. How do we name these three generations?
Answer:
P, F1 and F2
Explanation:
The first generation crossed which included the true breeding parents are the P generation plant. This produces the two subsequent generations which are the first filial generation (F1) and the second filial generation (F2).
if fossils are in many different places, but only lived for a short period of time what are they considered
Answer:
index fossils
Explanation:
Answer: An ideal index fossil
Explanation: An ideal index fossil lived during a short period of time, was geographically and environmentally widespread, and is easy to identify. Some of the most useful index fossils are hard-shelled organisms that were once part of the marine plankton.
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What causes there to be a H+ ion concentration gradient to build up inside the thylakoid space? Check all that apply.
a.) The electrons provide energy for the H+ pump to transport more H+ ions into the thylakoid space.
b.) A special enzyme produces more H+ ions.
c.) Photons of light create more H+ ions.
d.) The photolysis of water releases H+ ions into the thylakoid space.
Answer:
a.) The electrons provide energy for the H+ pump to transport more H+ ions into the thylakoid space.
d.) The photolysis of water releases H+ ions into the thylakoid space.
Explanation:
The thylakoid, which is found in the chloroplast, is the site of the first stage of photosynthesis (LIGHT DEPENDENT STAGE) in the cells of plants. The light stage of photosynthesis functions to produce energy (ATP) and NADPH for the second stage called Calvin cycle.
However, this ATP is generated by the power realized from the pumping of Hydrogen ions (H+) into the thylakoid lumen. The following causes the build up of H+ ions in the thylakoid space:
- Light photon hits the chlorophyll molecule, which is the photosynthetic pigment, to become charged. The electrons (e-) generated from this provide energy for the H+ pump to transport more H+ ions into the thylakoid space.
- Photolysis of water, which involves the splitting of water to produce hydrogen ions (H+) causes a build up of H+ in the thylakoid space.
What are the bonds of dna
Answer:
The bonds are covalent and hydrogen.
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Samantha’s sister is annoyed with her because her drinking has gotten in the way of their old movie night tradition. Samantha has been missing more and more movie nights since she started hanging out with a new group of friends and began drinking.
From the above scenario, it is right to conclude or infer that Samantha's Drinking habits are affecting her family relationships. It is not impossible for Samantha to continue to extend this habit across other very important social relationships as the habit worsens.
What are the health hazards of Drinking Alcohol?Excessive drinking might be harmful to your health. From 2015 to 2019, excessive alcohol usage resulted in more than 140,000 fatalities and 3.6 million years of potential life lost (YPLL) in the United States, reducing the lives of those who died by an average of 26 years.
Furthermore, one in every five fatalities among individuals aged 20 to 49 years was caused by excessive drinking. In 2010, the economic consequences of excessive alcohol use were projected to be $249 billion, or $2.05 per drink.
Consuming excessive amounts of alcohol is referred to as heavy drinking.
8 or more drinks per week for ladies.15 or more drinks per week for guys.Many people who drink extensively are not alcoholics or are addicted to alcohol.
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Full Question:
A.) Read your scenario
B.) Determine whether the teen’s drinking is affecting his/her physical health, education, social life or future
Scenario:
Samantha’s sister is annoyed with her because her drinking has gotten in the way of their old movie night tradition. Samantha has been missing more and more movie nights since she started hanging out with a new group of friends and began drinking.
It is a statement of judgment of a person about something in the world.
Answer:
heres your answer :)
Explanation:
Declarative Statements are the kind of statements which expresses someone's belief, view, or judgment about something/someone.
which processes lead to the formation of igneous rock?
A. Heat and pressure
B. Melting and cooling
C. Erosion and weathering
D. Compacting and cementing
Suppose you want to identify a bird that visits the feeder in your yard. Describe some methods you might use to identify the bird.
Answer:
you could use the shape of the bird. you could also use the color of it. and the size of it to identify it
Explanation:
with all of these you can then use a book or the internet
To identify a bird that visits the feeder in your yard, you can use a combination of methods that involve careful observation, field guides, digital resources, and possibly even technology.
1. **Observation:** Spend time closely observing the bird's appearance, behavior, and characteristics. Note its size, coloration, markings, shape of the beak, legs, and tail, as well as any unique behaviors such as feeding habits, flight patterns, and vocalizations.
2. **Field Guides:** Use field guides specific to your region or area. These guides contain illustrations, photographs, and descriptions of various bird species, helping you narrow down possibilities based on the bird's physical features. Look for guides that include range maps to see if the bird is typically found in your location.
3. **Binoculars:** If possible, use binoculars to get a closer look at the bird without disturbing it. Binoculars can help you see finer details that might be hard to distinguish with the eye.
4. **Online Bird Identification Tools:** There are many online platforms and apps designed for bird identification. Upload a clear photo of the bird, and these tools can provide potential matches based on the bird's appearance and location.
5. **Birding Apps:** Download birding apps that offer comprehensive information about bird species. These apps often include images, sounds, and detailed descriptions, making it easier to identify birds in the field.
6. **Online Birding Communities:** Join online forums or social media groups dedicated to birdwatching and identification. Share your observations and photos, and experienced birders can help you identify the species.
7. **Record Vocalizations:** If the bird is making distinct sounds or calls, try to record them using a smartphone or other recording device. You can then use these recordings to compare with known bird vocalizations online.
8. **Visit Local Nature Centers or Birding Clubs:** Local nature centers, wildlife refuges, or birding clubs might offer guided bird walks or resources to help you learn about and identify local bird species.
9. **Consult Experts:** If you're still having trouble identifying the bird, consider reaching out to ornithologists or experienced birdwatchers who might be able to provide insights based on your observations and descriptions.
10. **Keep a Bird Journal:** Keep a journal where you record the bird's appearance, behavior, location, and date of observation. Over time, this journal can serve as a valuable resource for comparing and identifying different bird species.
Remember that identifying birds can sometimes be challenging, especially if you're dealing with species that look similar or have varying plumage during different seasons. Patience, persistence, and a willingness to learn will greatly enhance your bird identification skills.
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match the definitions. question 6 options: glucose breakdown in the presence of o2 fermentation glucose breakdown in the absence of o2 release of all the stored energy in glucose production of energy via partial release of glucose energy 1. aerobic metabolism 2. anaerobic metabolism
Anaerobic respiration is the term for the breakdown of glucose when there is no oxygen present. When energy from glucose is released, a chemical activity known as respiration takes place in living cells.
In the absence of oxygen, glucose is partially converted to pyruvate. Anaerobic respiration is the name given to this process. Glucose is partially converted into water and carbon dioxide in the absence of oxygen. If all oxygen is removed, fermentation takes place. In anaerobic respiration, bacteria and yeast break down glucose (food) into alcohol and carbon dioxide while lacking oxygen to release energy.
So, we can say that the process of breaking down glucose when there is no oxygen present is known as anaerobic respiration. Living cells engage in a chemical process known as respiration when glucose is converted to energy.
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Which of these describe how a chromosomal mutation may occur during meiosis?
(SELECT ALL THAT APPLY.)
A) Homologous chromosomes separate from each other during meiosis I.
B) Sister chromatids are pulled apart into four separate chromatids during meiosis II.
C) Two homologous chromosomes do not separate properly during meiosis I.
D) Sister chromatids fail to separate during meiosis II.
Uneven crossing-over happens when homologous chromosomes are misaligned during meiosis, hence option c and d is correct.
What events occur during meiosis?Uneven crossing-over happens when homologous chromosomes are misaligned during meiosis. As a result, mutation a DNA sequence from one chromosome is deleted, and a DNA sequence from the other chromosome is inserted.
In meiosis, the chromosome or chromosomes duplicate (during interphase), and during the first division, known as meiosis I, homologous chromosomes exchange genetic information (chromosomal crossover).
In meiosis II, the daughter cells divide once more, severing sister chromatids to create haploid gametes.
Therefore, as a result, a DNA sequence from one chromosome is deleted, hence option c and d is correct.
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what are the two ways mitosis and meiosis increases genetic diversity?
Answer:
crossing over, and mutations caused during crossing over.
Explanation:
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.
what causes the density of ocean water to be different from fresh water?
A: An increase in wind speed
B: A decrease in salinity
C: An increase in temperature
D: An increase in salinity
Answer: The answer would be D
Explanation: The salinity would change the density of ocean water due to how the ocean water is heavily diluted with salt
9. What number on the diagram is pointing to the deltoid muscle?
15
16
17
18
Answer:
17 number on the diagram is pointing to the deltoid muscle
g Cell autonomous genes affect only those cells in which they are expressed. Which group of early developmental genes are not cell autonomous?
Answer:
The options are not given..
Here are the options.
A. segment polarity genes
B. gap genes
C. coordinate genes
D. homeotic genes
The correct option is A.
segment polarity genes
Explanation:
Segment polarity genes is a group of early developmental genes that are not cell autonomous because their expression helps to define anterior and posterior polarities within each embryonic parasegment. They are the genes that help to function for the polarity within each parasegment of the embryo
What is the difference in mechanism between protein entry into ER and integration of transmembrane proteins into ER membrane?
Protein entry into the ER lumen is facilitated by signal sequences present in the proteins whereas transmembrane protein integration into the ER membrane requires transmembrane domains.
Protein entry into the ER lumen (or insertion into the ER membrane) and integration of transmembrane proteins into the ER membrane differ in their mechanism. The following is a description of the differences between these two mechanisms.
Protein entry into the ER lumen is facilitated by signal sequences present in the proteins. Signal sequences, or signal peptides, are short stretches of amino acids located at the N-terminal end of proteins that are destined for the ER lumen or secreted outside the cell. Signal sequences interact with signal recognition particles (SRP), which then transport the protein to the ER membrane. Afterward, the SRP binds to the SRP receptor, and the protein is translocated into the ER lumen. The nascent protein is then translated, modified, and folded in the ER lumen.In contrast to protein entry into the ER lumen, transmembrane protein integration into the ER membrane requires transmembrane domains.
Transmembrane domains are composed of hydrophobic amino acids that cross the hydrophobic lipid bilayer of the membrane. Transmembrane proteins are inserted into the ER membrane through two mechanisms: The first mechanism is the signal anchor sequence, where a stop-transfer anchor sequence retains the protein in the membrane. The second mechanism is the signal peptide cleavage, where signal peptides in the protein cleave after they enter the ER lumen, and the transmembrane domain remains in the membrane. The protein is then translated and folded in the membrane.
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Learn how to correctly prepare and observe specimens using _____________________ ______________________ slides.
Microscope slides are used to support samples of organic material to observe under the microscope.
What are microscope slides?
Microscope slides are small flat pieces of thin, delicate glass of varying sizes. Usually, their size is about 75 x 25 mm, but they might vary according to the brand.
They are used to hold samples of tissue of diverse nature to observe under the microscope.
The way to prepare a slide might vary according to what you need to observe under the microscope and if it is a definitive or temporal microscopic prepared.
Sections of the sample are placed over the glass slide and fixated with liquid or other elements. It can be previously stained to observe and differentiate different structures.
Usually, to avoid lens accidents, slides are prepared together with cover glasses, which are even thinner squared pieces of glass that cover the organic material, so the lens does not get in touch with it.
There are graticule slides useful to make counts or take measures of the sample content.
Learn how to correctly prepare and observe specimens using _microscope_ slides.
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in our body, what is the process of moving eliminating waste?
Answer:
Explanation:
Excretion is the process of removing wastes from the body. Organs of the excretory system include the kidneys, large intestine, skin, and lungs
A student took a swab of the inside of their cheek during a lab investigation. While looking under the microscope, the student noticed two different objects on the slide, as shown.
What are both of the objects on the slide?
The two objects on the slide that the students noticed are cheek cells and bacteria.
What should you know about cheek cells?Cheek cells are the cells that line the inside of your cheek. They shed constantly and are also replaced by new cells.
Bacteria are microscopic organisms that live on and in our bodies. There are many different types of bacteria, and they can be found in all parts of our bodies, including our mouths.
Bacteria are not all bad. Some of them are important for our health because they help to break down food and they produce vitamins that we need.
The student was able to see the cheek cells and bacteria on the slide because they were stained with a dye called methylene blue.
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Spartina is a group of grasses that dominates communities of salt marshes in many coastal areas. Many of the insects, snails, birds, mice, and other animals found in these communities rely on Spartina for food, nest building materials, protection for their young, etc. The roots of Spartina also form dense mats that hold together soil in these ecosystems. Many species that live in Spartina salt marshes cannot survive outside of these unique ecosystems. Because living near the ocean is desirable to many humans, many Spartina marshes have been drained & cleared for human development. Analysis of the destruction that came when Hurricane Katrina hit Louisiana in 2005, however, showed that the reduction of salt marshes in coastal Louisiana was a contributing factor to the storm surge penetrating further inland.
1. The value of Spartina salt marshes in protecting coastal areas from storm surge would be classified as which type?
A. Extrinsic.
B. Intrinsic.
C. Neither.
2. The value of Spartina salt marshes in holding soil together would be classified as which type?
A. Extrinsic.
B. Intrinsic.
C. Neither.
3. In general, you would expect species that only live in Spartina salt marshes to have a higher extinction risk than species that can survive in urban areas.
A. True
B. False
4. Based only on the information included in this scenario, extinction risk for species that only live in Spartina salt marshes would be most influenced by which factor?
A. Restricted geographic range.
B. Narrow habitat requirements.
C. Small population size.
Answer:
1)a. Extrinsic
2) b. Intrinsic
3) a. True
4) a. Restricted geographic range
Explanation:
1. Spartina Salt marshes are important to the coastal areas as they protect them from storm surge as affecting the erosion of salt marsh edges and it is classified as extrinsic.
2) b. Intrinsic
Intrinsic factors such as vegetation and soil affect the erosion of salt marsh edges. It is determined by characteristics of soil and root biomass found under the ground.
3) a. True
Species that could survive in urban areas are less prone to extinction than the species that only survive in spartina salt marshes.
4) a. Restricted geographic range
A restricted geographic range is a factor that leads and affects the extinction in endemic species more.
Based on the food web above, describe the most direct impact of a decrease in zooplankton population caused by microplastics.
Answer:
Microplastics are abundant and widespread in the marine environment. They are a contaminant of global environmental and economic concern. Due to their small size a wide range of marine species, including zooplankton can ingest them. Research has shown that microplastics are readily ingested by several zooplankton taxa, with associated negative impacts on biological processes. Zooplankton is a crucial food source for many secondary consumers, consequently this represents a route whereby microplastic could enter the food web and transfer up the trophic levels. In this review we aim to: 1) evaluate the current knowledge base regarding microplastic ingestion by zooplankton in both the laboratory and the field; and 2) summarise the factors which contribute to the bioavailability of microplastics to zooplankton. Current literature shows that microplastic ingestion has been recorded in 39 zooplankton species from 28 taxonomic orders including holo- and meroplanktonic species. The majority of studies occurred under laboratory conditions and negative effects were reported in ten studies (45%) demonstrating effects on feeding behaviour, growth, development, reproduction and lifespan. In contrast, three studies (14%) reported no negative effects from microplastic ingestion. Several physical and biological factors can influence the bioavailability of microplastics to zooplankton, such as size, shape, age and abundance. We identified that microplastics used in experiments are often different to those quantified in the marine environment, particularly in terms of concentration, shape, type and age. We therefore suggest that future research should include microplastics that are more representative of those found in the marine environment at relevant concentrations. Additionally, investigating the effects of microplastic ingestion on a broader range of zooplankton species and life stages, will help to answer key knowledge gaps regarding the effect of microplastic on recruitment, species populations and ultimately broader economic consequences such as impacts on shell- and finfish stocks.
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Why is DNA locked in the nucleus of the cell?
Answer:
Inside the nucleus lies the blueprint that dictates everything a cell will do and all of the products it will make. This information is stored within DNA. The nucleus sends “commands” to the cell via molecular messengers that translate the information from DNA.
Explanation:
Answer:
In organisms called eukaryotes, DNA is found inside a special area of the cell called the nucleus. Because the cell is very small, and because organisms have many DNA molecules per cell, each DNA molecule must be tightly packaged. ... Researchers refer to DNA found in the cell's nucleus as nuclear DNA.
what are
two positive and two negative effects of land use by humans.
Answer: Positive:
1. Keep humans alive
2. Adequate food
Negative:
1. pollution
2. over population
Explanation:
why is it important for soil to contain nitrogen, phosphorus and potassium? Why is it important to fix soil that is lacking in these nutrients?
Answer: the best answer that I could give you is that without those things the plant would die.
Explanation: the soil is important because it helps the plant with growing and it hold the roots and the water and other things like that, also without nutrients the plant couldn't survive the nutrients is basically food for the plants
Answer:
Now I answered so you can give that guy brainless
Explanation:
explain the flow of energy of candles
Answer:
The wax vapor catches light and burns, sending a flame high above the wick. Heat from the flame travels in three directions at once by processes called conduction, convection, and radiation. Convection draws hot wax vapors out from the wick and sucks oxygen from the surrounding air into the base of the flame.
Explanation:
Answer:
The heat from the wick melts the wax which gets absorbed in the wick and then gets burnt (which is really oxidation) to produce heat energy as well as light energy. The energy transforms from chemical energy to heat and light energy. Because when the candle burns a chemical reaction occurs, and produces heat and light.
Which of the following is not a reason some groups doubt global warming is occurring?
A) Some groups argue carbon dioxide is an insignificant greenhouse gas.
B) Some groups believe water is a worse greenhouse gas than carbon dioxide
C) Many think global warming is a form of media alarmism
D) A majority of scientists believe in the theory of global warming
Answer:
A
Explanation:
Some groups argue carbon dioxide is an insignificant green house gas.
Answer:
D) A majority of scientists believe in the theory of global warming
Explanation:
Edge 2022
Scientists believing that global warming is real is not a reason why people doubt global warming is occurring...