The lipid bilayer functions as a barrier to molecules Because it is made up of densely packed molecules with lengthy nonpolar hydrocarbon chains.
The lipid bilayer is a fundamental part of every cell membrane. Because it is made up of two layers of fatty acids arranged in two sheets, the structure is known as a "lipid bilayer." The lipid bilayer, which surrounds all cells and provides the cell membrane structure, is normally between five and ten nanometers thick. The lipid bilayer serves as a barrier, retaining ions, proteins, and other molecules where they are required while preventing their diffusion into unintended locations.
Simple Diffusion Across the Cell Membrane:
The lipid bilayer's structure enables for simple diffusion of hydrophobic molecules like lipids as well as tiny, uncharged substances like as oxygen and carbon dioxide to move through the cell membrane along their concentration gradients.
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which correctly describes what is occurring at the four different stages of the cell cycle?
Answer: B
G1: the cell prepares for DNA replication
S: replication of DNA occurs
G2: the cell checks to make sure that division can occur
M: the cell divides
Above sequence correctly describes what is occurring at the four different stages of the cell cycle. Therefore, option (B) is correct.
G1, S, G2, and M comprise the cell cycle. The cell develops, synthesises proteins, and prepares for DNA replication in G1. DNA replication prepares the cell for division during the S phase. In G2, the cell checks for DNA replication mistakes and confirms that all cellular components are present for division.
Through the M phase, the cell divides through mitosis and cytokinesis, creating two daughter cells. The cell cycle regulates DNA replication and cell division for optimum cell function and growth. Therefore, option (B) is correct.
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4. Explain how ecological pyramids help analyze energy flow through trophic levels
a.
5. Explain how matter flows between trophic levels and among ecosystems
a.
6. Explain how water cycles globally
a.
7. Identify the importance of the nutrient cycles
a.
8. Explain how nutrient availability affects primary productivity
The ecological pyramids help us analyze energy flow through trophic levels because it provides information about organism and its population.
How ecological pyramids help analyze energy flow through trophic levels?Ecological pyramids help to analyze energy flow through trophic levels because it has a brief explanation about the type of organism in each trophic level. It also gives information about feeding behaviour and population of organisms in it.
Explain how matter flows between trophic levels and among ecosystems?Matter flows between trophic levels and among ecosystems through feeding of one organism to another.
Explain how water cycles globally?Liquid water evaporates in the form of water vapor. This water vapor condenses to form clouds and falls back to the earth in the form of rain and snow.
Identify the importance of the nutrient cycles?The importance of the nutrient cycles is storage of elements, which is important because some organisms require a small quantity of a particular nutrient in order to survive.
Explain how nutrient availability affects primary productivity?If sufficient sunlight and water are available to the producers, then the primary productivity increases in that ecosystem. We know that the primary productivity of an ecosystem is limited and controlled by the availability of nutrients.
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Why can two people draw different phylogenic trees using the same data and still both be correct?
The most common misinterpretation that does not change the result is related to taxa relatedness is to use the distance between taxa in phylogenetic trees to determine relatedness, i.e., the proximity of branch tips, often referred to as “tip reading”. Branches can be rotated around nodes, however, so that the positions of taxa are arbitrary.
What is phylogenetic tree?A phylogenetic tree, also known as a phylogeny, is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor.
What is the advantage of a phylogenetic tree?It helps us to understand how species are related to each other. The evolution of animal species has been prolific (the estimates go into the millions and tens of millions).
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If you moved to Saturn.
What would you take with you?
Answer:
My BEST FRIEND my dogs and my family and all my things or if it was possible my house with everything in it
Explanation:
Answer:
my phone
Explanation:
because i have to snap alot of pictures and make some videos
it'll be great experience.
The type of cartilage found at end of bones articulating to form joints is
Answer:
That would be Hyaline cartilage. A smooth type of cartilage that helps bones move or glide over one another.
Answer:Bone marrow
Explanation: it is what keeps the bones strong and together
Give your advice on what you think someone should do that is willing to start living a healthy, nutritious lifestyle?
(in regards of nutrition, 1 paragraph)
1) What is the difference between spectroscopy and spectrometry?
2) Why is it necessary to use a narrow wavelength spectrum of light in spectrometry? Why do we use wavelengths of peak absorbance for a particular analyte?
3) What volume of a 100 ppm (part per million) stock solution would be used to create 30 mL of a 10 ppm standard?
Spectroscopy refers to the interaction of matter with energy.
What is spectroscopy?The term spectroscopy refers to the interaction of matter with energy. It shows the manner in which matter is able to interact with energy. Spectrometry is the application of spectroscopy.
It is important to use a narrow wavelength during spectroscopy because different wavelengths can be used to identify the various kinds of compounds in the sample.
The dilution formula could be used to obtain the new concertation of the solution after dilution. An aliquot of the stock solution is added to a measured volume of water and made up to the required mark for dilution.
Using the dilution formula;
C1V1 = C2V2
C1 = 100 ppm
V1 = ?
C2 = 10 ppm
V2 = 30 mL
V1 = C2V2/C1
= 10 ppm * 30 mL /100 ppm
V1 = 3 mL
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Someone picks up a card that has 2 carbohydrate molecules that are bonded on it and asks "excuse me, but I think you dropped your name tag?
what is the joke here?
Explanation:
YAA! its a joke I laughed like Hell!
I don't understand what's the Joke in this..
Nature has ways of keeping the nitrogen,
carbon, and phosphorus cycles in balance.
However, run-off from animal operations and
fertilizers in our waterways can result in
A. cultural eutrophication
B. erosion
C. cleaner drinking water
D. an increase in water temperature
Answer: A. Cultural eutrophication
Explanation:
Correct option A.) cultural eutrophication.
When nitrogen and phosphorus from fertilizer are carried in runoff to lakes and oceans, they could purpose eutrophication, the overgrowth of algae. The algae can also additionally expend oxygen from the water and create a lifeless sector.
Most fertilizers utilized in agriculture—and on lawns and gardens—comprise each nitrogen and phosphorus, which can be carried to aquatic ecosystems in floor runoff. Fertilizer carried in runoff can also additionally purpose immoderate boom of algae or different microbes that have been formerly constrained through nitrogen or phosphorus. This phenomenon is known as eutrophication. At least in a few cases, phosphorus, now no longer nitrogen, appears to be the principle driving force of eutrophication.
Regions of lakes and oceans which can be depleted of oxygen because of a nutrient inflow are known as lifeless zones. The range of lifeless zones has elevated for numerous years, and greater than four hundred of those zones existed in 2008. One of the worst lifeless zones is off the coast of the US withinside the Gulf of Mexico. Fertilizer runoff from the Mississippi River Basin created a lifeless sector of over 8,463 rectangular miles.
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If I feed unlimited pizza to my siblings, then they will get a stomachache.
independent variable is ? dependent variable is ?
Answer:
Dependent Variable- Whether or not they get a stomachache
Independent Variable- The amount of pizza you feed them
Explanation:
Dependent Variable- The variable you observe
Independent Variable- The variable you change
I hope this helped, have a great day!
Answer: D.V- If they get a stomachache or not, I.V- How much pizza they ate
Explanation:
How could the racial background and perspective of a psychologist who is conducting a research subject influence the field of personality psychology?
Racial origins and the perspective of a psychologist who is conducting a research subject cannot influence the field of personality psychology, because personality psychology is a branch of psychology that examines personality and its variation among individuals. It aims to show how people are individually different due to psychological forces. His areas of focus include: building a coherent image of the individual and his/her main psychological processes.
What is personality psychology?Personality Psychology is the area that studies and seeks to explain the human particularities that influence behavior.Personality psychology or differential psychology is the part of psychology that is dedicated to describing and explaining "the enduring, non-pathological human particularities that influence behavior within a given population".
With this information, we can conclude that Racial origins and the perspective of a psychologist who is conducting a research subject cannot influence the field of personality psychology
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Consider the results of Ostfeld et al. 2018 paper. What type of forest is most likely to have a high
predators?
A site in a mostly maple forest.
B site surrounded by less than 1 kilometer of forest.
C site surrounded by at least 1 kilometer of forest.
D site in a mostly oak forest.
According to the result of Ostfeld et al., the type of forest that is most likely to have high predators is the site surrounded by at least 1 kilometer of the forest. Thus, the correct option for this question is C.
What do you mean by Predators?Predators may be defined as the type of animals/organisms that primarily obtains food by killing and hunting other organisms and finally consuming them. In a more simple sense, predators may be characterized as an animal that naturally preys on others.
The results of Ostfeld et al. 2018 paper, the area that is surrounded by at least 1 kilometer of the forest is known as the zone of predators, where a high number of predators are found. This is because in this region predators got an extremely good amount of food with less expenditure of energy.
Therefore, the correct option for this question is C.
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Climate change may be harm for us justify?
Climate change may be harm for us because Droughts that are more frequent and intense, storms, heat waves, rising sea levels, melting glaciers, and warming oceans can directly harm animals, destroy their habitats, and disrupt people's livelihoods and communities.
The effects of climate change on various sectors of society are interconnected. Drought can have a negative impact on both food production and human health. Flooding can lead to disease spread and damages to ecosystems and infrastructure. Human health issues have the potential to increase mortality, reduce food availability, and reduce worker productivity.
According to the World Health Organization, climate change is the greatest health threat facing humanity, threatening the progress made in development, global health, and poverty reduction over the last 50 years.
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which Empire did Alexander not rule.
Answer:Greece
Explanation:
In your own words, define the term science.
Answer:
agriculture, environmental, body, and nature
I have ten plots of plant of tomatoes. 5 plots have two earthworms. I wet the plants each day for four months. In this experiment, the number of earthworms in the soil is the _________ variable and the number of tomatoes on the plants after three months is the _________ variable
Answer:
independent; dependent
Explanation:
The independent variable is the one the experimenter controls. The dependent variable is the variable that changes in response to the independent variable.
The mass of an atom is fou
Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutron.
Explanation:
2.Which of the following sequences is in the correct order to know the steps involved to test the
presence of starch in a leaf?
P - Boil the leaf in alcohol in a water bath.
Q - Add iodine solution.
R - Wash the leaf in water.
S - Boil the leaf in water.
(a) S, Q, R and P (b) P, S, Q and R
(c) Q, R, P and S (d) S, P, R and Q
Answer: c
Explanation:
If I’m running a marathon characteristics of life would I need to survive
Fill in the blank
The graph indicates that the mean of the treatment is _____ than the mean of the placebo
The graph indicates that the mean of the treatment is Smaller than the mean of the placebo
The graph shows that the treatment's mean is lower than the placebo's mean.
The following graphs display several data sets that illustrate how medication affects how quickly you recover. Each graph with a statistically significant distinction between the placebo and the experiment should be clicked.
Thomas T. Harman and Walter Showell's Birmingham Dictionary is available online.
Thus, it will become clear that the typical church organ is actually a combination of three or four lesser organs.
ORGAN BUILDING'S RECENT REVOLUTIONGEORGE LAING MILLER
He means that I should assist him by keeping in mind and by making more modest requests of him.
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Please help with both fill in blank for number 7.
First Fill in Blank options:
-M20
-E38
-W0
Second Fill in Blank options:
-increase
-decrease
-rate did not change
Tyrel is hiking with his sister when they begin noticing that a lot of the trees around them look unhealthy. The leaves have large holes in them, as though something has been eating through them. After about a mile more of walking, both Tyrel and his sister realize that the only trees looking unhealthy with their leaves eaten through are oak trees. What is causing this?
A. a fungus
B. ash borer beetles
C. gypsy moths
D. a biopesticide
The reason for the eating of the leaves of the trees is the gypsy moths.
What are leaves?The leaves are the photosynthetic parts of the plant. The leaves are exposed to the sun and are able to produce the food that is required by the plant. Thus, the food of the plant could only be produced at the leaves and a damage to the structure of the leave by pests would certainly have an effect on the whole plant.
The gypsy moths are known to eat the leaves of trees. We can see here that in many places, the leaves of trees could be eaten by the gypsy moths.
As such, the reason for the eating of the leaves of the trees is the gypsy moths.
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You are preparing a 4-tube series of a 5-fold serial dilution. If Tube #1 contains 500 µL of undiluted stock solution, then what volume will be
transferred from Tube #1 to Tube # 2 to Tube # 3 to Tube #4?
O 500 μL
O 400 μL
O 250 μL
O 100 μL
The volume will be transferred from Tube #1 to Tube # 2 to Tube # 3 to Tube #4 is 500 μL.
What is serial dilution?
In order to produce an incubated plate with a readily countable number of colonies, serial dilution is employed in microbiology to measure the concentration or number of cells/organisms in a sample. To get the appropriate concentration of reagents and chemicals from a greater concentration, serial dilution is employed in biochemistry.
The concentration of an organism, in this case bacteria, is systematically lowered through successive resuspension in predetermined amounts of liquid diluent through the technique of serial dilution. Usually, the diluent's volume is a multiple of 10 to aid in the sample organism's logarithmic reduction.
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why the electron carrier NADH is used exclusively in the production of ATP whereas it phosphorylated form (NADPH) is used in anabolism
According to the research, the correct answer is the electron carrier NADH is used exclusively in the production of ATP because they are electron-donor molecules that lead to the synthesis of ATP, whereas it phosphorylated form (NADPH) is used in anabolism to generate larger molecules or macromolecules.
What is NADH?It is the molecule made up of two nucleotides, one adenine and the other nicotinamide, which can be in oxidized or reduced form, acting as an exchanger of reducing power in metabolism.
In this sense, anabolic pathways use chemical energy in the form of ATP and NADPH obtained by reducing NADP+ by accepting electrons from water, a donor that is oxidized to synthesize cellular components from simpler molecules obtained in different ways by different types of cells.
Therefore, we can conclude that according to the research, the correct answer is the electron carrier NADH is used exclusively in the production of ATP because they are electron-donor molecules that lead to the synthesis of ATP, whereas it phosphorylated form (NADPH) is used in anabolism to generate larger molecules or macromolecules.
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When graphing data, the variable the should be plotted on the x-axis is the...
Answer:
Independent Variable
Explanation:
the dependent variable goes on the y-axis while the independent variable goes on the x-axis
How is it possible for a woman to produce several eggs at one time
Answer:
women cannot produce eggs
Explanation:
they produce baby
Procedures to finding solutions to food born illneses
The Procedures to follow for solutions to food born illneses :
1. Wash your hands
2. Handle Raw Animal Food Properly
3. Use Clean and Sanitized Instruments, Instruments and Surfaces
5. Keep animals away from food and food preparation areas
1. wash your hands
One of the most important personal hygiene habits is also the prevention of food poisoning. You can get the most out of hand washing by following these simple steps.
2. Handle Raw Animal Food Properly
Improper handling of animal products is a common cause of food poisoning. It is important to take proper steps to ensure that these products are safe to consume.
3. Use clean and sanitized equipment, utensils and surfaces
Before preparing food, ensure that food contact surfaces and equipment are clean and sanitized to prevent the spread of harmful bacteria in food.
Avoiding cross-contamination also prevents the growth and spread of dangerous pathogens.
4. Eat before expiration date
It is a common belief that expired food is edible as long as there are no obvious signs of spoilage. Pathogens often grow to dangerous levels without being visible, odorous, or tasteful.
5. Keep animals away from food and food preparation areas
When it comes to disease transmission, animals are her one of the worst offenders. You may not be bathing your dog or cat regularly and often end up with more illnesses as a result.
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Question 9 (1 point)
What was the contribution of Henry Goddard to forensic science?
He was the first westerner-to perform an autopsy.
He invented the comparison microscope.
He refined the process of comparing bullets to make ballistic comparisons.
He wrote the first book on questioned document examination to determine
forgeries.
1. He was the first westerner-to perform an autopsy.
Autopsy- An autopsy, sometimes referred to as a post-mortem examination, is a specialized surgical procedure used to determine the manner and cause of death. The term "cause of death" refers to the medical diagnosis for such reason a patient passed away.
The three subcategories of autopsies are anatomical or academic autopsies, clinical or pathological autopsies, and medico-legal autopsies..
For such benefit the patient families, our staff, as well as the future practice of medicine, an autopsy serves two purposes:
1) To fully examine the prevalence as well as severity of human sickness in patients.
2) To evaluate the effectiveness of various treatment options.
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The humerus articulates with what 2 other bones at the elbow? (spelling counts!)
Answer:
It articulates with the radius and ulna bones of the forearm to form the elbow joint.
Explanation:
A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between__.
O one molecule of 9 and three molecules of 10
O three molecules of 9 and one molecule of 10
O one molecule of 5 and three molecules of 9
O one molecule of 5 and three molecules of 10
A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between three molecules of 9 and one molecule of 10.
three molecules of 9 and one molecule of 10How are triglycerides formed by dehydration synthesis?The dehydration synthesis of triglyceride is a condensation reaction in which one molecule of glycerol reacts with three fatty acids to form a triglyceride. Glycerol has three hydroxyl groups and fatty acids have carboxylic groups so they condense together with the loss of three water molecules and form an ester bond.
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