Answer:
The correct answer is - option A.
Explanation:
Reproductive barrier is a biological difference between two species that do not allow them to interbreed. Type of reproductive barrier is decided by the trait or barrier that prevents them to interbreeding.
habitat isolation takes pace when the prezygotic barrier that prevents interbreed two species due to the fact that they live in different area as insects that lives in golden rod and autumn daisy have different habitat.
Thus, the correct answer is - option A.
The reproductive barrier is defined as the biological isolation between two species that prohibits them to interbreed.
The correct answer is:
Option A. Habitat isolation
Habitat isolation can be defined as:
Habitat isolation is defined as a type of reproductive barrier that prevents the interbreeding between the organisms. Habitat isolation does not mean that the organisms living in different areas are unable to reproduce. The organisms living in the same geographical area but unable to interbreed because one of them lives on goldenrod plants and the other on autumn daisies is referred to as habitat isolation.
Thus, the correct answer is Option A.
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How many core biosafety work practices (or do's and don'ts) are there, according to the National Research Council’s book entitled, Prudent Practices for the Handling and Disposal of Infectious Materials?
Answer:
seven
Explanation:
There are seven biosafety practices which should be followed during the Handling and Disposal of Infectious Materials. These biosafety practices were made by the scientists in order to reduce the chances of contamination of worker who deals with the handling and disposal of Infectious or toxic materials. If these seven biosafety practices were not followed by the workers so there is high chances of infection which leads to their death.
What is the relation between Genes and DNA?
Answer:Gene and DNA are the two genetic terminologies mainly used to determine the characteristics of a living thing. In general, a gene is a short section of DNA and DNA- Deoxyribonucleic acid is a molecule which carries the genetic instructions or the hereditary materials
Explanation:The difference between DNA and gene are summarized below
Difference between Gene and DNA
Gene DNA- Deoxyribonucleic acid
Genes are the DNA stretches which encode for specific proteins. DNA is a biomolecule, which contains genetic information
Regulates the traits of an organism. Regulates gene regulation.
Gene is a specific sequence present on a short stretch of DNA. DNA made up of two long chains of polynucleotides wound together
Genes are made up of either DNA or RNA. DNA is a polymer of nucleotides
A gene is located on a chromosome. DNA is located within the nucleus of the cell.
Are coded with heredity information. Encodes the genetic instructions.
Humans developed this because it helped them stay alive by restricting the amount of information processed by the brain and scanning the scene before them quickly, looking for movement or physical threats. Group of answer choices Stereoscopic Visiion Binocular Vision Selective Vision Linear Perspective
Answer:
Binocular vision
Explanation:
Vision can be explained as an ability to see directly some things that can be a threat or of benefits . It can also be explained as the ability to sense or perceive threat or danger, or something good.
In this case, binoculars vision is a situation of sensing threats or dangers from a very distant place through the help of the brain. Most times, the brain will be able to sense dangers from the interpretation it gathered from what it saw earlier, before the person is involved in the act.
Define gray matter in the spinal cord. It is neural tissue that is dominated by the cell bodies of neurons, neuroglia, and unmyelinated axons, and surrounds the narrow central canal. It is neural tissue that contains large numbers of myelinated and unmyelinated axons. It contains the axons of motor neurons that extend into the periphery. It is neural tissue that contains the cell bodies of sensory neurons whose axons carry information to the spinal cord.
Answer:
It is neural tissue that is dominated by the cell bodies of neurons, neuroglia, and unmyelinated axons, and surrounds the narrow central canal.
Explanation:
Grey matter is a part of the central nervous system that is found on the surface of the brain.
It is a neural tissues that has alot of cell bodies of neurons, neuroglia and contain more unmyelinated axons and surronds the narrow central canal.it is distinguished from white matter because it has alot of cell bodies and unmyelinated axons and also it is not as white as white matter with greyish color.
Grey matter form spinal tracts which are the pathways where signals are sent from the brain to all part of the body.
Consider this plant cell. The organelles in a plant cell are labeled. Part E is a complex of vesicles and folded membranes within the cytoplasm. Which organelle is labeled E? Golgi apparatus chloroplast ribosome nucleus
Answer:
Golgi apparatus
Explanation:
The organelle labelled E is the Golgi apparatus
The organelles found in the cytoplasm are called cytoplasmic organelles
What is cell?Cell is defined as the simplest, basic and structural unit of life.
There are two types of organisms based on the number of cells they have; namely:
Unicellular organismsMulticellular organismsUnicellular organisms are organisms possessing only one cellMulticellular organisms are organisms which has two or more cellsLearn more about cells:
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How could gene therapy be used to treat diseases caused by mutated genes?
A. It could deliver a corrected version of a gene to a person's cells.
B. It could infect a person with a virus that is more harmful than the
mutation
O C. It could change a few bases in a piece of mutated DNA in only one
cell.
D. It could change genes in an individual so that offspring cannot get
the disease.
Answer:
a
Explanation:
Describe TWO WAYS technology has created more waste by humans.
I need an answer now.
Answer:
Hazardous type: This type poses potential threats to the environment and human life. Battery wastes from thrown away technology.
Electronic waste or e-waste describes discarded electrical or electronic devices. Used electronics which are destined for refurbishment, reuse, resale, salvage recycling through material recovery, or disposal are also considered e-waste.
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process? (a) Alcohol and lactic acid (b) Alcohol and CO2 (c) Lactic acid and CO2 (d) Lactic acid only
Answer:
alcohol and CO2
Explanation:
answer option b
Answer:
lactic acid and CO2
Explanation:
the equation for anaerobic respiration is:
C6H1206 → 2C3H6O3 + H2O + CO2 + ENERGY
glucose → lactic acid + water + carbon dioxide + small amount of energy
Which statement best describes how molecules interact with systems in the
human body?
A. Food molecules break down into waste molecules as they pass
through the digestive tract.
O B. Food molecules break down in the digestive system, and cells use
the smaller molecules to make what they need.
O C. Carbon dioxide molecules help carry other molecules into the
lungs as air is inhaled.
D. Carbon atoms combine with water molecules to form glucose, and
cells use the glucose to get the energy they need.
Answer:
i think B answer is right
Answer:
B is correct the others don't make sense
Explanation:
hope this helped <3
Which is least likely to be impacted by runoff from a factory? A) river B) groundwater C) lake D) ocean
Answer:
Groundwater
Explanation:
The factories mostly need large quantities of water to carry out their production precesses, however, as well as they need natural recources for their operation, they also dispose of them and a large part of the environmental contamination is due to the release of substances emitted by these. It´s very easy for toxic waste to contaminate rivers, lakes and aceans. Groundwater on the other hand is more complicated to contaminate because it´s found in aquifers below the surface of the arth, making by these factories to reach these places; althouh not impossible.
3) a) What are stomata (singular = stoma)?
b) Where on a plant are they located?
Answer:
A stoma (singular for stomata) is surrounded by two types of specialized plant cells that differ from other plant epidermal cells. These cells are called guard cells and subsidiary cells.
The majority of stomata are located on the underside of plant leaves reducing their exposure to heat and air current.
Explanation:
Answer:
a stomata is a pore in the coat of the leaves and/or stems
a stomata is found on stems and/or leaves
Which characteristic describes the whale but not its food source, the phytoplankton? The whale is heterotrophic. The whale has cell walls. The whale is unicellular. The whale is a prokaryote.
Answer:
A. The whale is heterotrophic.
Explanation:
The whale is an aquatic animal that is heterotrophic in nature. Heterotrophic means that this animal lacks the ability to manufacture its own food because it depends on plants and animals as a source of food energy. Since the Whale is dependent on phytoplankton for food, this means that it is not a producer of food and as such is heterotrophic.
Phytoplankton is a marine alga. Algaes are prokaryotes and this means that they are unicellular animals without a membrane-bound nucleus. The Cell wall is mostly a characteristic of plants. So the first option is a perfect description of the whale and not its food source which is the phytoplankton.
Answer:
ExplanationThe whale is heterotripic
Complete the punnet square cross. 12 points. Will give brainliest.
Answer:
See below
Explanation:
The traits are:
Tall (T)
Green (G)
Short (t)
Might be yellow (g)
Let's make a Punnet square for it and determine the possible offspring and also their ratio!
See the punnet square.
The same genotypes are denoted by the same color.
So the ration of Genotypes are TTGG (Tall green) : TTGg (Tall green) : TtGg (Tall Green) : Ttgg (Tall yellow) : TTgg (Tall yellow) : ttgg (Small yellow) is 4:4:4:2:1:1
So, the total ratio of Tall green to Tall yellow to Small yellow is 12 : 3 : 1
Which type of current flows in only one direction and is produced by a battery? magnetic voltage alternating direct
Answer:
Direct
Explanation:
Direct current flows in one direction are often referred to as unidirectional (uni- one, directional -direction). Whereas, other current flows typically can reverse the flow from time to time which is present in case of Alternating current flow
Direct
Current FlowThe pace at which electrons flow past a location in a complete electrical circuit is defined as current.The flow of electric charges with respect to time is referred to as current flow. When an electric charge flows in one way in an electric circuit, the current flows in the opposite direction.Direct current flows in only one direction and is produced by a battery.For more information:
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Which describes one characteristic of both El Niño and La Niña?
Both are causes of long-term climate change.
Both create warmer water.
Both occur in the Pacific Ocean.
Both are causes of hurricane activity.
Answer:
Both occur in the Pacific Ocean.
Explanation:
El Niño and La Niña are opposite phases of a natural climate pattern across the tropical Pacific Ocean that swings back and forth every 3-7 years on average
Answer:c
Explanation:
Describe how the water cycle moves water between the tree, the lake, and the sky in the picture below. Describe at least three of the water cycle processes you have learned about in the course. (10 points)
Answer:
The heat from the sun warms the water in the lake which evaporates and turns into water vapours. The water in the tree also rises into the atmosphere through a process, transpiration.
The water vapours rise into the atmosphere and forms clouds.
The water vapours in the clouds than condense into liquid water. Soon they'll get heavy and the water will fall down as rain, sleet, or snow.
Some of the rainwater sinks into the ground and is taken in by the roots of trees and plants.
This process keeps going on and on, and the water keeps shifting between the lake, tree and the sky.
Is phrenology an example of science or pseudoscience? Explain your answer.
Answer:
Yes, phrenology is an example of science or pseudoscience, which is there ti benefit humanity. it is recognized as pseudoscience
Explanation:
pseudoscience is a term commonly applied to any body of knowledge, methodology, or practice portrayed as a scientific substantially from the required scientific work. Phrenology persist as a pseudoscientific form of divination. it has no presence mainstream science, but it persists nevertheless.
Phrenology is considered an example of pseudoscience because it does not have proven scientific results that can support its claim.
What is phrenology?Phrenology is the study of attribute traits, talents, and intellectual prowess as a result of skull curvature is known as phrenology. Due to the absence of scientific evidence to back up its assertions, phrenology is regarded as a pseudoscience.
Pseudoscience is a science that only makes theories and assumptions, but there are no proven results or experiments to prove those claims. They are mostly based on statements and beliefs.
Phrenology is observing the skull to know the feelings and type of organism. It is only based on beliefs, there are no proven tests, so it is an example of pseudoscience.
Thus, phrenology comes under pseudoscience.
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The following is a list of the steps that occur in the production of an auditory sensation.
1. The pressure wave distorts the basilar membrane on its way to the round window.
2. Movement of the tympanic membrane causes displacement of the malleus.
3. Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve.
4. Movement of the malleus causes movement of the incus and stapes.
5. Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane.
6. Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct.
The proper sequence for these steps is:_____.
a. 2, 4, 6, 3, 5, 1.
b. 2, 4, 1, 6, 5, 3.
c. 2, 1, 4, 6, 5, 3.
d. 2, 5, 4, 6, 1, 3.
e. 2, 4, 6, 1, 5, 3.
movement of the tympanic membrane causes displacement of the malleus
what are the advantages of modern cutting crops
Answer:
the advantages of using modern technology
more yield of cropseasy farmingmore varieties of cropsfruits and vegetables are available all year round
Which is not something that occurs in translation? A codon and an anticodon pair. A peptide bond is created. A molecule of mRNA is formed. An amino acid is added to a polypeptide.
Answer:
A molecule of mRNA is formed.
Explanation:
Translation is the second process that occurs in gene expression. It is the process by which the information encoded in the mRNA transcript is used to synthesize a protein.
The mRNA nucleotide sequence is read in a group of three nucleotides called CODON. Each codon specifies an amino acid. Translation, which occurs in the ribosomes (cytoplasm), reads the codon with an anticodon using the complementary base pairing rule i.e. A-U, G-C. This means that a CODON-ANTICODON pairs.
The anticodon carries a corresponding amino acid to the polypeptide sequence. A peptide bond is formed when two amino acids joins together in a condensation reaction.
Note: A molecule of mRNA is formed during transcription
Answer:
A molecule of mRNA is formed.
Explanation:
Translation is the second process that occurs in gene expression. It is the process by which the information encoded in the mRNA transcript is used to synthesize a protein.
Which best describes what happens if two waves meet and build on each other?
A. constructive interference
B. destructive interference
C. reflection
D. absorption
Answer:
constructive interference
Explanation:
when two waves build off of each other, they interfere with one another and construct. therefore, the answer is constructive interference.
When the path difference between subsequent crystal planes is equal to an integral number of electromagnetic radiation wavelengths, constructive interference occurs. Thus, option A is correct.
What is the constructive interference?Where the lines (which represent the peaks) cross over one another, constructive interference occurs. In other words, constructive interference occurs when two waves are in phase.
When two waves are entirely out of phase (a peak is located in the middle of two waves), destructive interference ensues.
Constructive interference is the phenomenon where the total amplitude of two waves is equal to the sum of the amplitudes of the separate waves when two waves are in phase and their maxima add.
Therefore, constructive interference best describes what happens if two waves meet and build on each other.
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A general mechanism noted in thrombocytopenia is which of the following? (Select all that apply.) Decreased platelet production Decreased platelet survival Splenic sequestration Intravascular dilution Hemorrhage
Answer:
decrease in platelet production
Which of the following best expresses the concept of natural selection?
A) differential reproductive success based on inherited traits
B) inheritance of acquired characteristics
C) change in response to need
D) a process of constant improvement, leading eventually to perfection
E) survival of the fastest
Answer:
The correct answer is - option A. differential reproductive success based on inherited traits
Explanation:
Natural selection is the differential reproductive and survival of particular population due to the difference of shared characteristics that are inherited in a specific environment. In other words natural selection is differential reproductive success based on inherited traits.
The term differential reproductive success is suggests that comparing and analyzing successful reproduction rates between groups statistically which means how many individuals of the population left behind due to not inheriting traits require for survival.
Thus, the correct answer is - option A. differential reproductive success based on inherited traits
Due to genetic changes and the environmental conditions when the organism adapts itself to the current situation for survival is called natural selection.
Natural selection means that the organism that survived over another have better traits and characteristics for adaptation.
The correct answer is:
Option A. differential reproductive success based on inherited traits.
This can be explained as:
A particular type of trait carried by an organism that is better for adapting to survival than the other organism carrying less favorable trait will have a better chance of survival and their reproductive success will be much higher.Based on the inherited characteristics the natural selection will be based on reproductive success.Differential reproductive success is an analysis in which comparison is done among the organism that survived and those that did not.Comparing their traits and characters can give an idea about the factor affecting the selection.Therefore, differential reproductive success based on inherited traits best expresses natural selection.
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Place the steps of biofilm formation in the correct order: 1. Quorum sensing and the establishment of the extracellular matrix commences as microbes attach more stably. 2. Surface (substratum) is preconditioned by environmental molecules. 3. Biofilm matures and some microorganisms escape to the planktonic state. 4. Microbes attach and detach from the preconditioned surface.
Answer:Step order:
2. The surface (substrate) is preconditioned by environmental molecules.
4.Microbes bind and detach from the preconditioned surface.
1.Quorum detection and extracellular matrix establishment begins as microbes bind more stably.
3. The mature biofilm and some microorganisms escape the planktonic state.
Explanation:
The biofilm is a highly complex structure where many microorganisms coexist, compete, reproduce, feed, within a micro-system with many ideal conditions for each microorganism that is housed in it.
The biofilm is resistant to non-selective antimicrobials, that is, to disinfectants such as sodium hypochlorite, chlorhexidine, among others.
Evidence was also presented that they are resistant to selective antimicrobials such as antibiotics, that is why they have great virulence factors or potential to trigger pathology.
The solution to destroy a biofilm is mechanical sweeping, with brushing as it happens on our teeth or even with the catheter cleaning brushes that are used (in addition to the sterilization methods).
This biofilm presents separate colonies in its interim with a fluid that it travels transmitting signals, food, toxins, resistant factors between these different types of microorganisms. This fluid and this communication between them is called quorum sensing and not all microorganisms tolerate it.
Many microorganisms compete with each other for the medium, an example is streptococcus mutating in the dental biofilm, which generates an acidic medium by metabolizing carbohydrates within the biofilm, thus generating that those bacteria that live in neutral or alkaline ph cannot reproduce and die.
The biofilm can be contained by bacteria, viruses, fungi and even parasites, but what they all have in common is that they have the ability to reproduce on an inert surface such as catheters, dental surfaces, silicone hoses.
The single most important feature to consider when purchasing a scuba regulator is: How well it performs in controlled laboratory testing. A second-stage adjustment knob to ensure ease of breathing. The availability of regular, professional maintenance. Both the first and second answers are correct.
Answer:
A diving regulator is a pressure regulator that reduces the pressure of gas in the tank and deliver it to the diver so that he/she can breathe easily. It must pass the controlled laboratory testing and must have a second adjustment knob to ensure ease of breathing. Modern regulators are precision made and designed to work under demanding conditions. 1st stage and 2nd stage, diaphragm and piston, exhaust valve and purge button are types of diving regulators.
A scuba regulator is a pressure regulator that lowers the gas pressure in the cylinder and supplies it to the diver, making it easier for the diver to breathe. A second adjustment knob is needed to pass controlled laboratory tests and facilitate breathing. Modern regulators are precisely designed and designed for use in harsh conditions. The first and second stages, diaphragm and piston, exhaust valve, and flush button are a type of regulators.
What does the regulator do?The regulator is an excellent invention that provides exactly the air needed for breathing from the scuba tank. The regulator is the focus of the scuba gear and connects the scuba tank to BC, scuba pressure gauge (SPG), alternative air sources, and many other devices.
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Which of the following is a requirement for a population to be in Hardy-
Weinberg equilibrium?
A. One allele must provide a benefit.
B. The population must be very large.
C. There must be a high mutation rate.
D. Immigration must outpace emigration.
SUBMIT
Answer:
B. The population must be very large.
Explanation:
Madison lives near the ocean. She’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. If Madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable:
The given question is incomplete, the complete question is:
Madison lives near the ocean. She’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. If Madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
Answer:
A variable, which is under study or observation in an experiment and changes concerning the independent variable is termed as a dependent variable. Based on the given experiment, Madison is checking the influence on the progression of corrosion of metals concerning the variations in the concentration of salt. This shows that the extent of corrosion of metals is a dependent variable.
A variable, which can be controlled or monitored like increased or decreased, and one is familiar with is termed as an independent variable. This variable is not affected by another variable, like a change in the concentration of salt is the air may exhibit an effect on the corrosion of the metal, however, the process that is, the corrosion of metals does not affect the concentration of salt in the air. Hence, the independent variable is the salt concentration in air.
A variable that possesses the tendency to change or influence both the independent and dependent variables is known as a confounding variable. If the airspeed is higher than it will carry the salt particles at a brisk rate and speed resulting in enhanced corrosion of metals. Likewise, if the speed of air is slower, there will be a reduction in the corrosion of metals. Hence, the confounding variable is the speed of air.
The theater sold 562 tickets to the concert at a price of $6 each. Use the distributive property to find the product of 6 × 562. 6(562) = 6(500) + (60)(2) = 3,120
Answer:
1,897,087=1,900,207.2=3,120 (the equasion you gave when distributed)
Answer to the question(Money made): ($)3,372
Explanation:
solved it out by multiplying
Answer:
Answer to the question(Money made): ($)3,372
Explanation:
Which describes the main purpose of RNA polymerase during transcription?
A. RNA polymerase is guided to the coding region.
B. RNA polymerase produces mRNA from DNA.
C. RNA polymerase pulls apart the double helix.
D. RNA polymerase reaches the end of the gene.
Explanation:
RNA polymerase reaches the end of a gene. Which describes the main purpose of RNA polymerase during transcription? ... RNA polymerase reaches the end of the gene. RNA polymerase produces mRNA from DNA
Answer:
it's D
Explanation:
TIME REMAINING 51:02 Between 1940 and 1970 most scientists were already concerned about global warming. Please select the best answer from the choices provided T F
Answer:
False
Explanation:
Most scientists were not yet concerned about global warming. This was because the major issue during the period between 1940 and 1970 was global cooling with little or no attention on global warming.
However things started to change due to more pollution as a result of technological advances. Global warming started becoming a concern between 1970s and 1990s because of the increase in steady surface temperature.
Answer: FALSE
Explanation: I know I'm late but I couldn't find the answer to this question anywhere so I'm leaving it here. :)