Answer: After one hour, there are 16 bacteria. After two hours in the danger zone, there are 256 bacteria. After three hours in the danger zone, there are 4,096 bacteria. After four hours in the danger zone, there are 65,536 bacteria.
Explanation:
they mulltply fast
explain how the information in this diagram indicates that an oxygen atom could bond covalently to two hydrogen atoms to form water
Answer:
because when oxygen atom bonds with two hydrogen atoms they form water
Explanation:
A water molecule is formed by covalent bonds between an oxygen atom and two hydrogen atoms. The bond between hydrogen and oxygen involves unequal sharing of electron – it is a polar covalent bond. This is because the nucleus of the oxygen atom is more attractive to electrons than the nuclei of the hydrogen atom.
bro like can someone actually help please
Oh, it's easy. Basically, this is all you need to know:
C matches with G, and A matches with T.
So wherever you see a C, write "G."
Wherever you see a G, write "C."
Wherever you see an A, write "T."
Wherever you see a T, write "A."
write down the equation for the fate of pyruvate in muscle cells
Answer:
In Muscle cells
Pyruvate-----lack of oxygen---->Lactic acid+Energy
Subject is Science: I need help plzzz!! If we have two different layers of water, one has a temperature of 70 degrees and one has a temperature of 30 degrees, which layer is going to be at the bottom? 30 degrees or 70 degrees?
Answer:
70 degrees water will be at the bottom. Ice floats, so it would make sense for the colder water to rise. Sorry if I'm wrong :>
within six months of effectively using methicillin to treat s. aureus infections in a community, all new infections were caused by mrsa. how can this result best be explained? within six months of effectively using methicillin to treat s. aureus infections in a community, all new infections were caused by mrsa. how can this result best be explained? in response to the drug, s. aureus began making drug-resistant versions of the protein targeted by the drug. a patient must have become infected with mrsa from another community. the drug caused the s. aureus dna to change. some drug-resistant bacteria were present at the start of treatment, and natural selection increased their frequency. s. aureus can resist vaccines.
Aureus had drug-safe characteristics. S. aureus normally chose the characteristics for anti-infection obstruction, and a piece of the bacterial species became methicillin-safe.
In this manner, the medication-safe microscopic organisms were normally chosen, which expanded their populace. aureus bacterial contaminations in its competitors. In no less than a half year of beginning this compelling treatment technique, 85% of all new contaminations were brought about by methicillin-safe S. aureus organic entities.
Staph microorganisms are typically innocuous, however, they can cause serious contaminations that can prompt sepsis or passing. Methicillin-safe Staphylococcus aureus (MRSA) is a reason for bacterial sickness that is challenging to get as a result of an obstruction of a few anti-infection agents.
MRSA is a kind of microscopic organism that is impervious to a few generally utilized anti-infection agents. This implies contaminations with MRSA can be more enthusiastically treated than other bacterial diseases.
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In prokaryotes what are the two main DNA polymerases involved in DNA replication
In prokaryotes, the two main DNA polymerases involved in DNA replication are DNA polymerase III (Pol III) and DNA polymerase I (Pol I).
Pol III is the primary polymerase responsible for elongating the new DNA strand during replication. It is a high-fidelity enzyme with proofreading capability, which helps to maintain the accuracy of DNA replication. Pol III works in conjunction with other proteins and enzymes to form the replisome, which is the molecular machine that carries out DNA replication.
Pol I, on the other hand, has a more diverse role in DNA metabolism. It is involved in several processes including the removal of RNA primers during replication, DNA repair, and the filling of gaps left by DNA synthesis. In addition, Pol I has low-fidelity polymerase activity, which allows it to incorporate nucleotides at sites of DNA damage, leading to mutations.
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water pollution is the addition of harmful substances to water. some of these substances are found at home. what household chemicals might be harmful if not disposed of properly?
Answer:
flammability, corrosion, and explosibility).
Answer:
flammability, corrosion, and explosibility).
cleaning supplies, bleach, laundry detergent, window cleaner, fertilizers. oils, and soap
Explanation:
ANSWER IF YOU SEE THIS ITS URGENTTT PLEASE ANSWER IF YOU KNOW THE ANSWER ITS A LEVEL BIOLOGY WILL MARK BRAINLIEST TO A GOOD ANSWER THAT EXPLAIN IT WELL!
Which of these chemical formulae represents a dissacharide? justify your answer
a.) C6H12O6
b.) C5H10O5
c.) C10H18O9
d.) C12H24O12
The chemical formula that represents a disaccharide is \(C_{12}H_{24}O_{12}\). The correct option is D.
What is a disaccharide?A disaccharide is a simple sugar that consists of 2 units of monosaccharides. The 2 monosaccharides are joined together by a glycosidic linkage.
The simplest monosaccharides have the chemical formula \(C_6H_{12}O_6\). Examples of these monosaccharides include glucose, fructose, and galactose.
This means that the ratio of C to H to O in monosaccharides is 1:2:1.
A disaccharide will have 2 units of monosaccharides. This means that the ratio of C to H to O would remain 1:2:1. The only chemical formula that fulfills this criterium is \(C_{12}H_{24}O_{12}\).
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pls helppp!! Which is the first oxygen-producing organism?
Answer:
cyanobacteria first evolved
Explanation:
According to certain experts, it is believed that cyanobacteria originated around 2.4 billion years ago.
which of the following occurs if body temperature rises above normal?which of the following occurs if body temperature rises above normal?blood flow to the dermis increases.sweat gland activity decreases.evaporative cooling decreases.the activity of melanocytes increases.
When body temperature rises above normal, the body employs various mechanisms to regulate and dissipate heat. However, in this scenario, the option that does not occur is "evaporative cooling decreases."
Evaporative cooling is a crucial mechanism used by the body to cool down. It occurs when sweat evaporates from the skin's surface, taking away heat energy with it. This process helps to lower body temperature. If body temperature rises above normal, the body responds by increasing sweat production to enhance evaporative cooling. Therefore, it would be incorrect to state that evaporative cooling decreases because it is one of the primary mechanisms employed to counteract high body temperature.
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What property of carbon makes it able to form large macromolecules?
O Carbon can form five or more bonds with other carbon atoms in chains and rings.
O Carbon can form single, double, and triple bonds with other carbon atoms.
O Carbon can form three triple bonds, two double bonds, or one single bond with other carbon atoms.
O Carbon can form hydrogen bonds between molecules to make larger molecules.
B: Carbon can form single, double, and triple bonds with other carbon atoms.
Scientists have recently modified the bacteria that cause tooth decay by inserting a fragment of DNA into the bacteria's DNA that prevents it from producing lactic acid. What is the new DNA called?
foreign DNA
restriction DNA
recombinant DNA
transgenic DNA
Scientists have recently modified the bacteria that cause tooth decay by inserting a fragment of DNA into the bacteria's DNA that prevents it from producing lactic acid. This new DNA is called recombinant DNA.
What is recombination DNA?
Genetic recombination is the exchange of genes between two DNA molecules to form new combinations of genes. Like mutation, genetic recombination contributes to the genetic diversity of a population, which is the source of evolutionary variation.
Bacteria have two mechanisms of genetic variability: mutation and gene recombination. Gene recombination occurs by three types of mechanisms: transformation, conjugation and transduction. Transformation is the incorporation of free DNA by the bacterial cell.
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A cold front is moving eastward across New
York State at an average speed of 50 kilometers
per hour. Approximately how long will the front
take to move from Buffalo to Albany?
(1) 5 hours
(2) 8 hours
(3) 3 hours
(4) 10 hours
Which of the following proteins could be used to carry proteins across the
cell membrane?
Answer:
The answer is B :)
Explanation:
Proteins pass through the membrane through passive transport. So the protein used to carry protein through integrated channel membrane. so the correct option is C.
What are proteins?A protein is a naturally occurring complex substance which consists of amino acid residues joined by peptide bonds.
Passive transport is defined as movement of a solute from a region of high electrochemical potential to a region of lower electrochemical potential on the opposite side in cell membrane. The figure representing the protein transportation through protein carrier channel.
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When you hold a mug of hot cocoa,you feel a change in temperture.how does the skin detect this change?
Answer:
sensory receptors in the skin detect the stimuli from the environment
Explanation:
2
Which of the following is a correct statement
about fossils?
F Only an entire organism can be
preserved as a fossil.
G Fossils provide the only evidence
for evolution.
H Most organisms do not form fossils.
J Only the hard parts of an organism can
be preserved as a fossil.
Answer:
Only the hard parts of an organism canbe preserved as a fossil.
Explanation:
When an organism dies, its soft parts often decay quickly or are eaten by animals. That is why only hard parts of an organism generally leave fossils. These hard parts include bones, shells, teeth, seeds, and woody stems.
What is the role of a species can assume in ecosystem this ecncompasses all the way in which species interacts with the ecosystem, such as what it eats
The role a species can assume in ecosystem that encompasses all the way in which species interacts with the ecosystem, such as what it eats is called niche.
What is a niche?Niche is a function within an ecological system to which an organism is especially suited.
The niche of an organism describes the role the organism plays in a community or ecosystem.
A species' niche encompasses both the physical and environmental conditions it requires like temperature and the interactions it has with other species (like predation or competition).
Niche is specific to a particular species, which may overlap with a similar niche but must have distinct differences.
Therefore, it can be said that a niche is the role of a species in an ecosystem.
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Compare and contrast the lytic and lysogenic cycles of reproduction
The viral reproduction processes known as lytic and lysogenic cycle are different from each other.
During the lytic cycle, the virus quickly takes control of the host cell, replicates its genetic material, puts together new virus particles, and then lyses the host cell to release the progeny virus. As a result of this cycle, the host cells rapidly disintegrate and die.
In contrast, during the lysogenic cycle, viral DNA is incorporated into the host cell's genome. Viral DNA is replicated during cell division and incorporated into the genetic makeup of the host cell. Viral genes are not actively expressed during this latent stage. However, under specific conditions, such as stress or environmental changes, integrated viral DNA can be triggered, which initiates the lytic cycle.
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Onepage review on why understanding gas and vapors in a work setting is important and what we can do in our workplace to prevent accidents with gases and vapors.
Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.
In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.
Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.
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!!!!!HURRY PLEASE!!!!!How does the theory of plate tectonics explain the movement of Earth’s plates? Explain In 2 or more sentences.
The theory of plate tectonics states that the Earth's surface is made up of several large, moving plates. These plates are constantly moving, colliding, and pulling apart due to forces generated by the movement of material in the Earth's mantle. The movement of these plates causes the creation of earthquakes, volcanoes, and mountain ranges as well as the formation of oceanic crust and the reshaping of continents over time. The movement of the plate is caused by the convection currents in the Earth's mantle, which causes the plate to move in a slow and steady way.
what does a plant cell have and a animals cell dosent have
Answer: Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation:
Answer:
cell wall and chloroplasts are the likely answer but plasmodesmata, plastids, and a large central vacuole also work
Explanation:
yea
the florissant fossil beds in colorado are home to several massive redwood stumps that were subjected to a special kind of fossilization millions of years ago. what service could these fossilized stumps most likely provide?
The fossilized redwood stumps in the Florissant Fossil Beds in Colorado could most likely provide information about the ancient climate and environment of the area millions of years ago.
The process of fossilization occurs when organic material is replaced by minerals over a long period of time, preserving the structure of the organism. In the case of the redwood stumps, the fossilization process provided a unique opportunity to study the anatomy and growth patterns of these ancient trees.
Additionally, the growth rings present in the stumps can provide information about the climate patterns during the time they were alive.
By analyzing the width of the rings, scientists can estimate annual precipitation and temperature fluctuations, which can give insights into the past climate of the region.
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STEP 2
To the side, there are several pictures of materials. Choose the materials that you think will
best model the cells and how they are connected. Construct a model of each tissue using the
pictures. You will want to duplicate (ctrl+D) the picture several times to create your model.
Create the models in the space below.
Tissue in skin
Tissue in heart
The cells are connected to each other by cell-cell adhesions.
The majority of the mechanical loads are carried by the cell-cell adhesions, which hold the cells together. Strong intracellular protein filaments, which are cytoskeleton elements, span each epithelial cell's cytoplasm and adhere to certain junctions in the plasma membrane to accomplish this.
The skin is made up of three tissue layers: the epidermis, and the outermost layer. The middle layer is the dermis. The bottom, or fatty layer, is the hypodermis. A coating is provided by epithelial tissue (skin, the linings of the various passages inside the body)
Only the heart contains cardiac muscle tissue, a unique, well-organized form of tissue. It is in charge of keeping the heart beating and the blood flowing throughout the body.
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Beginning with a fertilized egg (zygote), how many cells would be present in an embryo following a series of five cell divisions?
A) 4 B) 8 C) 16 D) 32 E) 64
Beginning with a fertilized egg (zygote),the sales would be present in an embryo 4 cells are present.
A pregnancy starts with fertilization, when a woman's egg joins with a man's sperm. Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
A zygote is a eukaryotic cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information of a new individual organism. In multicellular organisms, the zygote is the earliest developmental stage.
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ANSWER THIS ASAP: Im losing my got-dang mind over this! Can someone PLEASE tell me in scientific natiation, when u move the decimal to the left is it positive( or when u move it to the left its negative?)? And if u move the decimal to the right is it positive(or when u move it to the right its negative?)?
Answer:
oh I can try my best to help you so it depends on the whole number you can move the decimal to the left or to the right but if the whole number is positive then it would still be positive just have less value when doing it to the left and it would have more value when moving it to the right .so think of it as moving it to the left as dividing/subtracting and moving it to the right as multiplying/adding hope I helped!! :'))
Answer:
if it is whole number then its positive
Explanation:
brainliest?
Identify the strengths and weaknesses of Mendel’s Law of Independent Assortment.
Answer:
Explanation:
Mendel propel two laws The law of inheritance and that of independent assortment of gene.
Independent assortment of gene explain that alleles of a gene assort independently and that different Allele can show different phenotypic effect and differences. This means that in a gene where we have 2 allele they can both show individual difference where one can have a dominant effect over the other and the other allele is recessive.
This law does not take care of linked gene where alleles don't separate after crossing over sister chromatids but are rather inherited together given rise to complex inheritance.
Pleiotrophy effect of a gene where a gene is having many effects.
Question 6 help me answer 6
Answer:
the first one or the last one
Explanation:
This is a molecule of glucose, a simple carbohydrate. If this molecule were broken down, would it provide all of the elements needed to assemble lipids, nucleic acids, or proteins? Use evidence from the diagram in your answer.
Answer:
No, it wouldn't provide all the elements needed to assemble lipids, nucleic acids or proteins.
Explanation:
As it can be seen from the diagram, the breakdown of glucose molecules will release hydrogen, carbon and oxygen. All these elements are needed to make lipids, proteins and nucleic acids. But apart from these elements, other elements are also required for the making of these compounds. For example, nucleic acid would require the elements nitrogen and phosphorus apart from carbon, hydrogen and oxygen for its making. Proteins would need nitrogen, sulphur and selenium apart from carbon, hydrogen and oxygen.
I hope this works
The breakdown of glucose molecules would not provide all the elements required to assemble lipids, nucleic acid, or protein as they required various other elements other than carbon, hydrogen, and oxygen.
The glucose molecule is a simple carbohydrate that is made of three different molecules called carbon, hydrogen, and oxygen. The breakdown of the glucose molecule provides carbon, hydrogen, and oxygen only.
The assemblage of other organic macromolecules that are lipids, nucleic acids, or proteins need other elements along with carbon, hydrogen, and oxygen:
Lipids: requires polymer of monomers called fatty acid made up of elements carbon, hydrogen, and oxygen and sometimes Nitrogen, sulfur.Nucleic acid: nitrogen, phosphorus, and sulfur with carbon, hydrogen, and oxygenprotein - elements like nitrogen, phosphorus, sulfur, and selenium with CHO.Thus, the correct answer is no, it would not provide all elements.
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1. Explain what occurs if the niches of two species overlap and they share the same resources
2. What is the difference between camouflage and mimicry?
3. What is coevolution and how does it work?
4. How is parasitism difference from mutualism? 5. What is the difference between primary and secondary ecological succession?
6. How is stabdity maintained in a living system? 7 What is a population's range of tolerance?
8. Describe the reproductive patterns of r-selected species
When the niches of two species overlap and they share the same resources, competition can occur.
Camouflage copies a part of the environment while mimicry copies another organism.
What is coevolution?Coevolution is a process where two or more species reciprocally affect each other's evolution through natural selection. This process occurs when two species have a close ecological relationship, such as predator-prey, host-parasite, or mutualistic interactions. In these relationships, the evolution of one species affects the evolution of the other and vice versa, leading to a coevolutionary arms race.
Parasitism harms another organism while mutualism benefits both organisms.
Primary succession begins from a habitat where other organisms are not present while secondary succession begins from a pre-existing species.
Stability is maintained by the process of homeostasis.
A population's range of tolerance is known as its carrying capacity.
R-selected species, also known as "opportunistic" species, are organisms that have a high reproductive rate, but typically have a lower chance of survival. These organisms are often found in unstable or unpredictable environments, where resources are limited and environmental conditions are highly variable. Examples of r-selected species include many insects, small mammals, and annual plants.
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On nights when we see the new Moon phase, what side of the moon are we seeing?
Answer:
The side of the moon that isn't lit
Explanation:
Because that side of the moon isn't lit then that's what we're seeing