Answer:ITS B GRAVITY PULLS AN INWARD FORCE!
Answer:
Answer A
Explanation:
Gravity keeps things on the ground meaning the gravitational force is going down.
What is a the gram stain test?
Answer:
Gram stain or Gram staining, also called Gram's method, is a method of staining used to distinguish and classify bacterial species into two large groups: gram-positive bacteria and gram-negative bacteria.
Explanation:
Gram stain or Gram staining, also called Gram's method, is a method of staining used to distinguish and classify bacterial species into two large groups: gram-positive bacteria and gram-negative bacteria.
In 1998, paleoanthropologist Rick Potts published an article in The Yearbook of Physical Anthropology, a peer-reviewed journal. The article was titled “Environmental Hypotheses of Hominin Evolution.” In his paper, Potts claimed that great variations in environmental conditions over time were responsible for the adaptability of humans and the success of our species. Which would most likely be found in his paper?
This question is incomplete because the options are missing; here is the missing section:
Which would most likely be found in his paper?
A. A review of modern human anatomical structure.
B. Evidence of changing environmental conditions, with references.
C. The reasons competing hypotheses are wrong.
D. His opinion of what will happen to the survival of the human race.
The answer to this question is B. Evidence of changing environmental conditions, with references.
Explanation:
In texts such as scientific articles, the central point is expressed by the main claim or hypothesis as this is supported and explained through evidence in the articles. This means Potts article focuses on the environmental changes and how these contributed to the human species adaptability.
Due to this, it is expected the article explains the changes in environmental conditions, and the connection of these to adaptability. Moreover, because this is a scientific article all ideas should be supported with evidence collected by the author including references to other reliable sources. Thus, "evidence of changing environmental conditions, with references" is expected to be found in this article.
Answer: B
Explanation: I took the test :)
The cell membrane is mainly made up of lipids and proteins. It acts as a barrier to the surrounding environment. Which of the following statements about lipids BEST supports the argument that lipids help protect the contents of the cell?
Responses
Lipids that are placed in water do not dissolve.
Lipids that are placed in water do not dissolve.
The tail of a lipid is made of carbon and hydrogen.
The tail of a lipid is made of carbon and hydrogen.
Individual lipids in a membrane can rotate freely.
Individual lipids in a membrane can rotate freely.
Lipids are composed of a head and a thin tail
Lipids helps in protecting the contents of cell because it is hydrophobic , when placed in water they do not get dissolve.
There is a characteristic that unites the various chemicals that make up lipids. Insoluble in water, lipids are hydrophobic ("fear of water"). In a cell, lipids have a wide range of activities. Fat-like lipids, often known as lipid stores, are how cells keep energy for long-term use. For both plants and animals, lipids act as a barrier between them and their surroundings. As an illustration, their water-repellent properties aid in keeping aquatic birds and mammals dry. A significant component of the plasma membrane, lipids serve as the building blocks for numerous hormones. The several types of lipids are fats, oils, waxes, phospholipids, and steroids.
Thus, lipids cell membrane are the structural barrier of cell and helps in protecting its contents .
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Use the Internet to find the SDS for regular bleach (sodium hypochlorite, 4-6%).
Identify each of the following items on the SDS:
Physical state
Routes of exposure and symptoms
Required protective equipment
First aid procedures
Fire-fighting measures
Chemical reactivity
Safe storage
Safe disposal
Environmental precautions and ecotoxicity
Spill cleanup procedures
Record the SDS information for each of the items listed in step 2 into Data Table 2.
The features of Safety Data Sheet (SDS) for regular bleach (sodium hypochlorite, 4-6%) is illustrated below.
What is Safety Data Sheet (SDS)?The Safety Data Sheet (SDS) is defined as an occupational safety and health sheet used as a source of information concerning harmful chemical substances in order to avoid life threatening situations while using them.
The following can be identified in the Safety Data Sheet (SDS) for bleach (sodium hypochlorite, 4-6%).
Physical state: clear light yellow green liquid.
Routes of exposure and symptoms: Eyes, skin, mucous membranes. Causes eye and skin irritation and possible burns.
Required protective equipment: Eyes;Wear chemical splash goggles. Skin; Wear appropriate protective gloves to prevent skin exposure. Clothing; Wear appropriate protective clothing to prevent skin exposure
First aid procedures: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin: Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Fire-fighting measures: As in any fire, wear a self-contained breathing apparatus in pressure-demand and full protective gear.
Chemical reactivity: Sodium hypochlorite solutions decompose slowly at normal temperatures releasing low concentrations of corrosive chlorine gas. Decomposition is influenced by temperature, concentration, pH, ionic strength, exposure to light and the presence of metals.
Safe storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Safe disposal: Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste.
Environmental precautions and ecotoxicity
Environmental precautions and ecotoxicitySpill cleanup procedures: It has not been proven to be a treat to the environment.
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GIVING BRAINLIEST IF YOU HURRY ! living environment help! 20 pointsss
List and describe 2 habitats you observed. List the species you observed (at least 3 species) and any variation within the species (due to genetic variation within the species) you observed. Indicate which habitat you saw each in. What sorts of things might negatively impact the habitat of the species you observed? For example, spiders living in a flower garden might be negatively impacted by pesticides.
Habitat 1: Forest
Species observed:
Eastern gray squirrel (Sciurus carolinensis)
White-tailed deer (Odocoileus virginianus)
Red-tailed hawk (Buteo jamaicensis)
Genetic variation observed:
The Eastern gray squirrels had variation in their fur color, with some individuals having darker or lighter shades of gray.
The White-tailed deer had variation in their antler size and shape, with some individuals having larger or more branched antlers than others.
The Red-tailed hawk had variation in their feather coloration, with some individuals having darker or lighter shades of red on their tails.
Negative impacts on the habitat:
Deforestation and habitat loss due to human activities such as logging and urban development can negatively impact the forest habitat of these species.
Pollution, including air and water pollution, can also negatively impact the health of the forest ecosystem and the species that depend on it.
Habitat 2: Coral reef
Species observed:
Clownfish (Amphiprioninae)
Blue tang (Paracanthurus hepatus)
Green sea turtle (Chelonia mydas)
Genetic variation observed:
The Clownfish had variation in their coloration, with some individuals having brighter or darker stripes than others.
The Blue tang had variation in their fin shape, with some individuals having longer or more pointed fins than others.
The Green sea turtle had variation in their shell pattern, with some individuals having more or fewer scutes (the bony plates that make up their shell).
Negative impacts on the habitat:
Climate change and ocean acidification can negatively impact the health of coral reefs, which in turn can affect the species that depend on them.
Overfishing and destructive fishing practices can also damage coral reefs and reduce the populations of fish and other species that depend on them.
The Law of Independent Assortment states that:
A. two alleles for each characteristic separate during gamete formation.
B. when gametes are formed, genes for different traits are randomly sorted into the gametes.
C. during fertilization alleles are randomly paired together when gametes fuse.
D. alternate versions of genes cause variation in inherited characteristics.
e
The Law of Independent Assortment states that alternate versions of genes cause variation in inherited characteristics. The correct option is D.
What is the Law of Independent Assortment?The law of Independent Assortment is given by Gregor Mendel. He was a scientist and botanist who gave very useful discoveries in the field of hereditary.
The law of Independent Assortment states that the gene from both parents for the same traits does not overlap, They were present independently, and they are the reason for the variation.
Variation is the different characters present in an organism. The recessive gene and the dominant gene are the two types of alleles. The dominant allele is shown in the organism.
Thus, the correct option is D. alternate versions of genes cause variation in inherited characteristics.
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if 4 molecules of water are oxidized by the light-dependent reactions, how many molecules of ATP are formed directly as a result?
When 4 molecules of water are oxidized by the light-dependent reactions, six molecules of ATP are formed directly as a result.
What are molecules?A molecule is described as a group of two or more atoms held together by attractive forces known as chemical bonds.
The Adenosine triphosphate (ATP) is described as the source of energy for use and storage at the cellular level. The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups.
During the light-dependent reaction the ions flow through ATP synthase from the thylakoid space into the stroma in a process called chemiosmosis to form molecules of ATP.
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Pls help me fast I will mark u as the brainliast.pls help meeee
Answer and Explanation:
The cell looks like a prokaryotic cell. A prokaryotic cell might be recognized by the presence of flagellates used to move (the four long filaments located posterior to the cell). There are also many pili surrounding the cell wall (the small little filaments). There are almost no organelles. There is a circular DNI molecule concentrated in a nucleoid (which seems to be the grey oval in the middle of the cell). Prokaryotic cells also have different compartments that depend on the type of cells, such as chlorosome, carboxysome, phycobilisome, and others (which might be the dark spiral circle in the anterior part of the cell). Two differences with the cell of an onion peel are that the onion peel cell has its genetic material surrounded and protected by the nucleus membrane, whereas the prokaryotic cell lacks a delimitated nucleus. Also, the onion peel cell has a hexagonal shape and lacks flagellates and pili, unlike the prokaryotic cell, which uses the to move. The onion peel is a multicellular structure, while the prokaryote is a one-celled organism. There should always be a cover glass over the cell or tissue we are looking at. Fasten the slide with the stage clips. Move the lens carefully in order not to damage it or the slide. Do not touch or clean the lens with the fingers and try not to stain them.Which part of the catabolism of glucose by cellular respiration requires molecular oxygen (O2) and produces CO2
Answer:
The combination of citric acid cycle and electron transport requires molecular oxygen (O2) and produces CO2
Explanation:
Glucose catabolism is a process in which glucose is oxidized into carbon dioxide. The chemical bond energy of glucose is released as ATP and heat. This chemical bond energy of glucose is the primary source of ATP for all aerobic organisms.
The combination of citric acid cycle and electron transport requires molecular oxygen (\(O_2\)) and produces \(CO_2\).
The part of the catabolism of glucose which by cellular respiration requires molecular oxygen (O2) and produces CO2 is the combination of citric acid cycle and electron transport chain.
Cellular respiration involves the breakdown of glucose into carbon dioxide and water with the release of ATP molecules. It is the process by which cells produce energy to carry out their activities.
The part of the catabolism of glucose which by cellular respiration requires molecular oxygen (O2) and produces CO2 is the combination of citric acid cycle and electron transport chain.
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features of intensive system in farm management
Answer:
I will anwer the question.
Explanation:
Pasture Intensification. ...
Rotational Grazing. ...
Concentrated Animal Feeding Operations (CAFOs) ...
Crop Irrigation. ...
Genetically Modified Organism (GMO) Seeds. ...
Use of Agrochemicals. ...
Livestock. ...
Aquaculture.
Which ocean current warms the climate of northwestern Europe?
Answer:
The Atlantic overturning is one of Earth's most important heat transport systems, pumping warm water northwards and cold water southwards.
Explanation:
hope it helps
Background: You will be the evolutionary biologist, and complete the following activities
to build a cladogram of Xenites. Based on the order of the rock layers in which fossils
were found, species A appears to be the oldest and probably the most primitive.
1. Fill in the table noting which species of xenite has each characteristic, marking each
yes or no. (3 points)
Observing each of the animals shown we have to classify what each one of them has that differs from the other in this way, the evolutionary process of each one is:
Xenite A: Have eyestalksXenite B: Have eyestalks and mouthXenite C: Have eyestalks, tail and mouthXenite D: Have spine and eyestalksXenite E: Have spine, eyestalks and mouth.What is evolutionary process?Evolutionary processes aim, therefore, to generate greater adaptation of species in an environment. This concept of adaptation is related to several other evolutionary processes, mainly speciation, when new species of organisms are formed from gradual changes in preexisting species.
In this case, the most evolved species to the most evolved is:
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How is a dichotomous key used to classify organisms?
Explain your answer
Answer:
A dichotomous key is an important scientific tool, used to identify different organisms, based the organism's observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.
Explanation:
HELP PLEASE! Which of the following courses should a student take in order to become a hydrologist? Choose the two best answers.
statistics
life science
coding
physical science
philosophy
Answer:
The two best courses for a student aspiring to become a hydrologist would be:
Physical Science: This course would provide a solid foundation in understanding the principles of physics and chemistry, which are essential for studying the movement and behavior of water in hydrology.
Statistics: Statistics is crucial for analyzing and interpreting data in hydrology research. Hydrologists often deal with large datasets and need statistical skills to make accurate conclusions and predictions.
While the other courses may have some relevance or value in certain aspects of hydrology, they are not as directly applicable or fundamental as physical science and statistics.
Explanation:
Answer: Statistics and Physical Science.
Explanation:
Statistics: Statistics is a branch of mathematics that deals with collecting, analyzing, and interpreting data. Statistics is essential for hydrologists because they use data to monitor, model, and forecast water resources and environmental issues. For example, hydrologists may use statistics to estimate water availability, assess water quality, evaluate water management strategies, and identify trends and patterns in hydrological phenomena.Physical science: Physical science is a broad term that encompasses the natural sciences that study the physical aspects of nature, such as physics, chemistry, geology, meteorology, and oceanography. Physical science is important for hydrologists because they need to understand the physical processes that govern the movement, distribution, and properties of water in various forms and environments. For example, hydrologists may use physical science to study the hydrologic cycle, the interactions between water and earth materials, the effects of climate and weather on water resources, and the principles of fluid mechanics and hydrodynamics.Hope this helps, and have a great day! =)
What is adaptive radiation according to evolution?
Answer:
Adaptive radiation is a rapid increase in the number of species with a common ancestor, characterized by great ecological and morphological diversity.
Answer:
Adaptive radiation is the rapid diversification of an ancestral population into several ecologically different species, associated with adaptive morphological or physiological divergence [12]. From: Trends in Ecology & Evolution, 2004.
hy Sophie hru xd
Which explanation best explains the role of enzymes as catalysts in living systems?
A.
Enzymes accelerate chemical reactions without getting used up in the process.
B.
Enzymes accelerate chemical reactions by getting used up in the process.
C.
Enzymes decelerate chemical reactions by getting used up in the process.
Answer:
A.
Enzymes accelerate chemical reactions without getting used up in the process
Recently scientists have been able to create a complete sequence of mammoth DNA from frozen samples found in Siberia. This creation will allow scientists to clone a mammoth by inserting the mammoth DNA into an Asian elephant's embryo, that will then develop inside a female Asian elephant. The Asian elephant is a relative of the mammoth and has been on the endangered species list since 1986. What would be an ethical concern associated with using an endangered Asian elephant to grow the embryo containing the cloned mammoth DNA?
What are the impacts of climate change on Guyana with recent statistics?
Answer:Increase of heavy rainfall, possibly leading to flooding; Sea-level rise and storm surges, especially for the coastal zone; and Increase in temperature and the decrease of annual precipitation.
Which of the following are final destinations of proteins directed to the secretory pathway? ▼endoplasmic reticulum ▼mitochondria ▼the plasma membrane ▼the outside of the cell▼ the nucleus ▼the golgi apparatus ▼lysosomes A. TRUE B. FALSE
Answer:
False, the final destination is the outside of the cell
Explanation:
The secretory pathway moves proteins to the cell membrane, where they are released to the extracellular medium. In this pathway, the proteins enter into the membrane of the rough Endoplasmic Reticulum (ER) in a cotranslationally way (i.e., during their synthesis in ribosomes). This pathway can be summarized by the following transporter activities: Endoplasmic Reticulum >> Golgi apparatus >> secretory vesicles (such as lysosomes) >> cell membrane, where proteins are finally released by exocytosis.
What weather condition is most likely to occur as the warmer, humid air is rapidly pushed higher by the cooler air?
Answer:Tornadoes are caused
Explanation:Tornado because when warm humid air mixes with cold air a tornado is caused. Hope this help.
Consider your typical daily food choices. Is sugar intake something you focus
on? Do you keep track of your intake of added sugars? Do you check food
labels for added sugars? What are some choices/changes you have made, or
can make to lower your intake of added sugars?
Let me know you opinion Please
Do you monitor your consumption of added sugars What decisions or modifications have you made We would have consumed 7.9 tablespoons of sucrose if sucrose had made up the entirety of our additional sugar .
How are teaspoons of sugar calculated?A significant amount of added sugar may be concealed in drinks. Because of this, it's crucial to consistently inspect the bottle's back. We must first read the list if ingredients and the Nutrition Facts label to see just how much sugar is in our beverage before we can compute teaspoons of fructose (table sugar).
What risks does sucrose pose?When sucrose is metabolized, sugar splits into glucose and fructose, which your body uses in different ways. Your blood sugar is raised during this process, and too much of it can cause blood vessels to burst and oral health issues including gum diseases and cavities.
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Which of the following is false about DNA?
A. DNA is made up of units called nucleotides.
B. Any base can pair to any other base.
C. DNA contains the instructions to make proteins.
D. DNA is found in a cell's nucleus.
Answer:
b. any base pair can pair to any other base
Explanation:
Any base pair cannot pair with any other base, Adenine pairs with thymine and cytosine pairs with guanine.
• The hereditary material in humans and almost all of the living species is known as DNA or deoxyribonucleic acid.
• The majority of the DNA is present within the nucleus of the cell.
• DNA comprises the instructions to make proteins that helps to perform essential functions within the body of an organism.
• Within the DNA, information is stored in the form of a code formed of four chemical bases, that is, Adenine, guanine, cytosine, and thymine.
• The base pairs present within the DNA pairs up with each other, that is, adenine pairs with thymine only, and guanine pairs with cytosine, no other kind of pairing is found within the DNA. Each base of also attached with a molecule of phosphate and sugar.
• Together, a phosphate, base, and sugar are known as a nucleotide.
Thus, statement B is incorrect.
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The recommended dosage for Albuterol is 0.3mg/kg/day to be given P.O. (by mouth) to a child weighing 47 lbs. Available: 2mg/5ml. How much of the solution is needed for the whole day?
What is the first branch of the evolutionary tree
The first branch of the evolutionary tree is believed to be the separation between prokaryotes (organisms lacking a cell nucleus) and eukaryotes (organisms with a cell nucleus).
The evolutionary tree, also known as the tree of life or phylogenetic tree, represents the evolutionary relationships between all living organisms on Earth. It illustrates the diversification of life over time, showing how different species are related to one another through common ancestors.
1. The first step in understanding the first branch of the evolutionary tree is to recognize that all life on Earth can be classified into three main domains: Bacteria, Archaea, and Eukarya.
2. Among these domains, Bacteria and Archaea are considered prokaryotes, which are single-celled organisms lacking a membrane-bound nucleus. They are believed to have diverged from a common ancestor.
3. Eukarya, on the other hand, comprises organisms with eukaryotic cells, which possess a nucleus surrounded by a membrane. This domain includes all complex organisms such as plants, animals, fungi, and protists.
4. The separation between prokaryotes and eukaryotes is considered the first major branch in the evolutionary tree. It represents a fundamental divergence in cellular structure and complexity.
5. While the exact details and timing of this divergence are still the subject of scientific investigation, it is generally believed to have occurred billions of years ago, early in the history of life on Earth.
6. This initial split paved the way for the subsequent diversification of life, leading to the vast array of species and ecosystems we observe today.
7. It is important to note that the evolutionary tree is a constantly evolving representation of our understanding of the relationships between organisms. New discoveries and advances in scientific knowledge may lead to revisions and refinements of the tree over time.
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The evolution of new traits is possible because_________________
a) selection can anticipate future environmental changes.
b) mutation and recombination during sexual reproduction produce new genotypes.
c) selection can act on the expression of existing traits in new tissue/organs leading to
novel functions.
d) punctuated equilibrium and gradualism always take place in nature.
Answer:
the answer is d
the answer is d
In order to make a karyotype, cell division is arrested at a point when the chromosomes have condensed and the nuclear envelope has disappeared, but before the sister chromatids separate. Which stage of the cell cycle would be a good point to perform a karyotype?
Answer:
Prophase
Explanation:
At prophase the chromosomes condense and the nuclear envelope disappears
Mark this and return
How is energy related to the change of state
represented by the model?
O Atoms gain energy as a gas changes to a solid.
Atoms gain energy as a gas changes to a liquid.
Atoms lose energy as a gas changes to a solid.
Atoms lose energy as a gas changes to a liquid.
The energy is related to the change of state represented by the model by: D. Atoms lose energy as a gas changes to a liquid.
What is Atoms?A model of the transition from a gas to a liquid is shown in the accompanying image. It demonstrates how atoms or molecules change from being widely scattered as in a gas to being concentrated as in a liquid.
The atoms in this process move from a higher-energy state to a lower-energy state releasing or losing energy in the process. The most common kind of energy loss is heat.
Therefore the correct option is d.
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while hiking, you must push aside thick branches that are near your face. one of them rips the skin on your arm and you begin to bleed from the cut. which of the following plays an important role in initially protecting you from infection?
The first line of defense against pathogens is mechanical barriers, which physically prevent pathogens from entering the body. The skin is very crucial to infection.
The most significant mechanical barrier is the skin. In actuality, it is the body's most crucial line of defense. Pathogens find it highly challenging to enter the skin's outer layer because of its toughness. At body openings, mucous membranes act as a mechanical barrier. Pathogens cannot enter the body because of mechanical barriers, which include the skin, mucous membranes, and bodily fluids like tears and urine. Pathogens on bodily surfaces are eliminated by chemical barriers, such as the enzymes in saliva, perspiration, and sperm. The components of innate immunity include physical barriers (epithelial tight junctions, tight junctions in the skin), biological barriers (such as infection)
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Compare Which atoms are moving faster: those in a spoon at 0 °F or those in a
fork at 0 °C? Explain your answer. (Hint: Which is the higher temperature, 0 °F
or 0 °C?)
32 degrees Fahrenheit is equal to 0 degrees Celsius, and the fork's atoms are moving more quickly.
How atoms are moving faster?Celsius is equivalent to 0 degrees Fahrenheit, and 32 degrees Fahrenheit is equal to 0 degrees Celsius.
Their zero points are different, and the temperature increments also differ significantly. On the Celsius scale, there is a difference of 100 degrees between freezing and boiling.
Therefore, in Fahrenheit, the difference is 180 degrees, according to this, Celsius is 1.8 times greater than Fahrenheit, and the fork's atoms are moving more quickly.
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