Natural selection is a simple mechanism that causes populations of living things to change over time. It causes are variation, Inheritance, Selection, Time and Adaptation.
Natural selection results in the transmission of advantageous genetic variants through reproduction. As a result, a new generation of organisms emerges that has a higher chance of surviving and reproducing.
Variation. Organisms (within populations) exhibit individual variation in appearance and behavior. Inheritance. Some traits are consistently passed on from parent to offspring. High rate of population growth.Differential survival and reproductionTo learn more about reproduction please visit here:
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What causes genetic variation in a population environmental changes?
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation in a population environmental changes.
Gene flow, or the transfer of genes between several groups of organisms, is another source. The development of new gene combinations through sexual reproduction can also result in genetic variety.
Genetic variation is the variance in DNA sequences among members of a population. Germ cells, such as sperm and eggs, as well as somatic (all other) cells, are subject to variation.
Gene variants, sometimes known as mutations, can cause genetic differences, or a normal process in which genetic information is rearranged as a cell prepares to divide can also cause genetic variations (known as genetic recombination). Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function.
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54. Using mechanical friction when prepping will not aid in: a. Removal of resident bacteria b. Removal of dirt and oil c. The effectiveness of antimicrobials d. Removal of transient bacteria
Using mechanical friction when prepping will not aid in: a. Removal of resident bacteria.
Friction is described because the resistance to movement because of sliding, and all equipment devour frictional strength due to the fact their components slide in opposition to one another. Lubrication can manipulate friction in a number of those times however very often, including in engines, maximum mechanical strength is misplaced through shearing liquid lubricant films. In mechanical structures including inner combustion engines, the time period refers back to the electricity misplaced in overcoming the friction among transferring surfaces. Frictional forces, such as the traction needed to walk without slipping, may be beneficial, but they also present a great measure of opposition to motion.
Thus, option a is the correct choice.
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when you swallow, food, water, and other liquids move into the ____, a hollow tube that connects the mouth to the stomach
Select the statements that describe brain injuries.Brain injuries only affect the brain.
Brain injuries can occur when the brain’s oxygen or glucose supply is interrupted.
Brain injuries can only be caused by physical trauma.
Brain injuries can be caused by infection or intoxication.
Option B, C. Brain injuries can be caused by both physical trauma and non-physical causes such as infection or intoxication.
Physical trauma to the head, such as a blow or a jolt, can cause a brain injury. Examples of traumatic brain injuries include concussions, contusions, and skull fractures. These injuries can result from falls, car accidents, sports injuries, or other types of accidents. In addition to physical trauma, brain injuries can also be caused by non-physical factors such as infection or intoxication. Infections such as meningitis and encephalitis can cause inflammation and swelling in the brain, leading to brain injury. Intoxication from alcohol or drugs can also cause brain injury by affecting the brain's ability to function properly. It's important to note that brain injuries can also be caused by a combination of physical trauma and non-physical factors. For example, a person who suffers a traumatic brain injury may also develop an infection or become intoxicated, which can further complicate their recovery.
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Approximately how many plant made pharmaceuticals are currently under different stages of discovery?
a.
100
b.
200
c.
300
d.
400
In your own words, why is biodiversity important? Please provide at least one example.
Answer:
Biodiversity is important to humans for a lot a reasons such as life support provides dmfunctioning ecosystems that supply oxygen clean air and water.
if all animals are the same size, shape, color and in the same place they can be more susceptible to extinction with just one event like with big dinosaurs and a asteroid hitting the earth
What are the 3 factors of natural selection?
The core of Darwin's thesis is that if three criteria are met, natural selection will take place. Factors: The battle for existence, variety, and inheritance is represented by the circumstances highlighted in bold above.
Most attributes are inherited, more offspring are generated than can survive, and offspring with more attractive traits will survive and have more offspring than those with less favorable traits. These three principles result in natural selection, which is an unavoidable process.
More environment-adapted organisms are more likely to survive and pass on the genes that contributed to their success. Over time, species change and diverge as a result of this process. One method of accounting is natural selection.
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Is co2 essential for photosynthesis,name two ways the validity of this investigation can be ensured
Answer:
Insert a part of the leaf of a destarched plant into a conical flask containing potassium hydroxide. Potassium hydroxide solution absorbs the carbon dioxide gas from the air present in the glass bottle. Leave the plant sunlight. After few hours, perform a starch test to this and another leaf of the same plant.
Conclusion: In this experiment, we can conclude that carbon dioxide is essential for photosynthesis. Both the portion of leaf received the same amount of water, chloroplasts, and sunlight but the half part which was inside the glass bottle did not receive carbon dioxide.
Answer:
Carbon dioxide is essential for the plants to sustain, as it is the carbon fixed from the carbon dioxide during photosynthesis is used for synthesizing glucose. This glucose is then later used during cellular respiration to make ATP, the energy molecule. It is also used by plants as a vital source of carbon to produce a major part of the plant mass.
The importance of carbon dioxide for plants can be proved by a small experiment:
Take two healthy potted plants. Keep them in dark for 2-3 days, so that all the carbon dioxide fixed till that gt used up by the plant. Take the plants and keep both in two separate closed bell jar containers that are air-tight. In one of the jar, keep an open beaker containing potassium hydroxide (KOH) solution along with the plant. KOH can absorb carbon dioxide, so the jar containing KOH is devoid of carbon dioxide. Keep both the jars in sunlight for 4 hours. Pluck the leaves from plants in both jars and remove chlorophyll by boiling in ethanol. Apply iodine solution over the leaves. The leaves of the plant present in the jar without KOH solution turns blue-black color, as the starch in the leaves reacts with iodine. But, the leaves of the plant in the jar with KOH does not change color as in the absence of carbon dioxide the plant cannot produce starch.how many body openings do comb jellyfish have A 0 B 1 C 2 D3
Answer:
C 2
Explanation:
They have two (2) holes. While true jellies have a sealed bell with only one opening (like the one opening of an anemone), comb jellies have a small opening at the top of their body and one at the bottom so that water can flow through them. - They often have plates for protection on the outside of their bodies.
What is the passing of genes from parents to children called?
The passing of genes from parents to children is called heredity.
Inheritance, also called heredity or biological inheritance, is the passing of traits from parents to offspring. Through either asexual or sexual reproduction, progeny cells or organisms acquire the parent's genetic information. Heredity refers to the genetic heritage inherited from our biological parents. More precisely, it is the transference of traits from one generation to the consequent. These traits can be physical, such as eye color, blood type, disease, or behavioral.
In humans, eye color is an example of a genetic trait or Heredity.
A person can inherit the "brown-eyed feature" from either parent. Inherited traits are controlled by genes, and the complete set of genes in an organism's genome is called its genotype.
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Sickle disease cell is a recessive genetic disorder. How many copies of the mutated gene (HbS allele) do you need to develop full blown sickle cell anemia?Please explain as well
If a bot gets first, Ill give the person who gives a correct answer 30 points and brainliest.
Answer:
It takes two copies of the mutant gene.
Explanation:
One from each parent, to give somebody the all-out sickness. Numerous individuals have only one duplicate, the other being typical.
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arrange the constititual ideas in the order in which they appear in the U.S Constituation
Answer:
The Constitution is divided into seven articles on different topics. Each article is further divided into sections
Explanation:
Article I deals with the legislative branch of government
Article II concerns the executive branch of government
Article III establishes the Supreme Court as the highest judicial power in the United States
Article IV defines the relationship between the states
Article V describes the procedure for amending the Constitution
Article VI declares itself, the Constitution, as "the supreme Law of the Land"
Article VII ratifies the Constitution
What type of mutation has occurred in the following example?
Original DNA Sequence ATC GGC TAG GCA
Mutated DNA Sequence
ATC AGG CTA GGC
A) deletion mutation
B) germ-cell mutation
C) insertion mutation
Explanation:
What type of mutation has occurred in the following example?
Original DNA Sequence ATC GGC TAG GCA
Mutated DNA Sequence
ATC AGG CTA GGC
A) deletion mutation
How is scale type related to diversity
Answer:
Usually three levels of biodiversity are discussed—genetic, species, and ecosystem diversity. Genetic diversity is all the different genes contained in all individual plants, animals, fungi, and microorganisms. It occurs within a species as well as between species. Ecological diversity
Ecological diversity is the largest scale of biodiversity, and within each ecosystem, there is a great deal of both species and genetic diversity. Species diversity is determined not only by the number of species within a biological community—i.e., species richness—but also by the relative abundance of individuals in that community. … Two communities may be equally rich in species but differ in relative abundance At regional scales, diversity is also increased by speciation and decreased by extinction. These decreases in diversity include those caused by regional extinction events that extirpate species from the region in question but not necessarily from all other regions.Four Types of Biodiversity
Species Diversity. Every ecosystem contains a unique collection of species, all interacting with each other. ...
Genetic Diversity. Genetic diversity describes how closely related the members of one species are in a given ecosystem. ...
Ecosystem Diversity. ...
Functional Diversity.
Explanation:
What is a summary of the nitrogen cycle?
Explain the application of biology epecially the role of microbilogy and biotechnology for the growing public and global health need
A, in the development of effective diagnotic ,prevention and treatment meaure including production of novel drug and recombnant vaccine
B, in the production of nutritionally enriched genetically modified crop and animal to alloviate food inecurity which i a common dilemma particularly in underdeveloped countrie
Biotechnology is the application of biology to the creation of new things, processes, and creatures with the goal of enhancing society and human health.
A. Medical biotechnology is a subspecialty of medicine that conducts research on living cells and cell components before creating pharmacological and diagnostic products. These goods aid in both disease treatment and prevention. Modern diagnostic and preventative medical devices, such as diagnostic test kits, vaccinations, and radio-labeled biological treatments used for imaging and analysis, have been made possible by advances in biotechnology.
B. By improving crop quality and in some cases productivity, biotech crops can boost farming's profitability. Some of these crops can make work easier and increase farmer safety. As a result, farmers may focus more of their time on other lucrative activities and spend less time cultivating their crops.
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Position A represents the position of the sun at another time of day during month Z. What is the time of day when the sun is at position?
Answer:
Position of the Sun. On Monday, September 16, 2019 at 02:30:00 UTC the Sun is at its zenith at Latitude: 2° 48' North, Longitude: 141° 16' East. The ground speed is currently 463.40 meters/second, 1668.2 kilometres/hour, 1036.6 miles/hour or 900.8 nautical miles/hour (knots).
Explanation:
The time of the day is 1 p.m when sun is at position A.
What is the distance between earth and sun?As noted earlier, Earth's average distance to the Sun is about 93 million miles (150 million kilometers) from the Sun.
Position of the Sun. On Monday, September 16, 2019 at 02:30:00 UTC the Sun is at its zenith at Latitude: 2° 48' North, Longitude: 141° 16' East. The ground speed is currently 463.40 meters/second, 1668.2 kilometres/hour, 1036.6 miles/hour or 900.8 nautical miles/hour.
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what is an inex fossil
Answer:
Explanation:
An index fossil is used for learning the age of geological periods.
Which of the following is the best source of
scientific data?
A. Magazine
B. Scientific journal
C. Newspaper
D. Radio
Answer:
Scientific journal B:
Explanation:
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Which fundamental principle surrounding enzymes explains why transition state analogues are able to act as potent inhibitors of naturally occurring enzymes
A fundamental principle surrounding enzymes is that they can only catalyze reactions if the substrate binds to a specific site on the enzyme. This site is known as the active site.
The active site of an enzyme is a highly specific region that contains amino acid residues that interact with the substrate. These residues form a complementary shape that is specifically tailored to bind to the substrate. This binding of the substrate to the active site is what allows the enzyme to catalyze the reaction.
The transition state of a reaction is the energy state of the molecules just before the products of the reaction are formed. Transition state analogues are molecules that are designed to mimic this transition state and can be used to inhibit the enzyme.
Due to their similarity to the transition state of the reaction, the transition state analogues bind to the active site of the enzyme. This binding is strong and tight, preventing the natural substrate from binding. Therefore, the enzyme is unable to catalyze the reaction and is inhibited.
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Can someone help me in this
Answer:
I can't see the whole question
What are the 4 common characteristics used to describe bacterial colonies?
The 4 common characteristics that are used to describe bacterial colonies are shape, size, color and texture.
Bacterial colonies are basically group of bacteria which have originated from the same mother cell and have divided repeatedly. The morphological characteristics of a colony are basically the visual characteristics by which we can distinguish between different bacterial colonies.
The first most common characteristic is the shape. The shape includes form of the bacteria which can be circular, filamentous etc. and also margin which can be undulate, irregular etc. The second characteristic is the color which indicated whether the colony is transparent, opaque or pigmented. The third characteristic is size which can be large, medium, small or pinpoint. And finally there's texture or the surface appearance which means if the colony is smooth, rough, wrinkled, dull etc.
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In chemistry, the elements are *
a. Pure chemical substances containing only one type of atom
b. Pure chemical substances containing two or more different types of atoms
c. Substances which can be burnt in the presence of air
d. Substances that do not react with other substances
What is the process in prophase I that has caused genetic material exchange to take place?
Chromosome crossover is the mechanism by which homologous chromosomes couple up and exchange genetic material during prophase I.
Leptotene, zygotene, pachytene, diplotene, and diakinesis make up prophase I's five stages. Several significant activities, including as the pairing of homologous chromosomes and the reciprocal exchange of genetic material between these homologous chromosomes, take place during these stages in addition to those that take place in mitotic prophase. Prophase I progresses at varying rates according on sex and species.
Until ovulation, several species halt meiosis in the diplotene of prophase I. In humans, oocytes can be stopped in prophase I for decades before swiftly completing meiosis I just before ovulation.
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What 6 things do bacteria need to grow and survive?
The six things which bacteria need in order to grow and survive are food, time, temperature, acidity, oxygen and moisture.
Bacteria are basically single-celled microorganisms which are able to live and survive in a wide range of conditions. Bacteria are found almost everywhere in the environment including inside our own bodies.
Bacteria require six basic conditions in order to survive which include food, time, temperature, acidity, oxygen and moisture. Food or nutrition supply allows bacteria to grow. Bacteria multiply in number by dividing over time.
Different types of bacteria need different temperatures to grow. Most bacteria are able to thrive in low acidity or neutral environments but there also a lot of bacterial types which can survive in a wide range of pH. Some bacteria are able to thrive in the absence of oxygen while some type of bacteria require oxygen in order to grow. Moisture also boosts bacterial growth.
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Snow leopards are very rare because they occupy what level of the food chain
Answer:
One big reason that snow leopards are endangered is because of poaching. Poachers illegally kill snow leopards, even though they are endangered, and sell the animals for money. The snow leopard's thick, white fur is highly sought after to make fur clothing.
Explanation:
hope this helps
Answer: One big reason that snow leopards are endangered is because of poaching. Poachers illegally kill snow leopards, even though they are endangered, and sell the animals for money. The snow leopard's thick, white fur is highly sought after to make fur clothing.
Explanation:
All fungi are considered Group of answer choices auto/heterotrophs, cell wall made of peptidoglycan, prokaryotic heterotrophs, to have cell walls made of chitin, eukaryotic autotrophs/heterotrophs, cell wall made of psuedomurien, prokaryotic autotrophs, cell wall made of cellulose, eukaryotic
Answer:
to have cell walls made of chitineukaryotic heterotrophsExplanation:
Domains are the highest taxonomic category in which living beings can be grouped or divided. There are three domains: archaea, bacteria, and eukarya.
The eukarya domain is composed of the Protist, Fungi, Plantae, and Animalia kingdoms.
Kingdoms include different phyla closely related.
The Fungi kingdom includes yeasts, molds, and mushrooms. All of them are characterized by the same general aspects.
All the members of the kingdom
Lack mobility, growing on the ground, organic matter, or other surfaces. They all have a rigid cell wall composed of chitin. They grow like hyphae, which are cylindrical uniformed structures that might reach many centimeters in length. Heterotrophic nutrition. The species can not produce their own food, so they decompose organic matter and get the nutrients from there. Reproduction is by spores, which are resistant to adverse environmental conditions.Which of the following is NOT a characteristic of ATP?*
ATP belongs to a group of chemicals called nucleic acids
O ATP is an organic molecule
O ATP has a phosphate group in its structure
O ATP is made from the breakdown of proteins
Answer:
ATP is made from the breakdown of proteins
Explanation:
A group of sheep run in random directions to confuse a single predator. This is an example of which social behavior?
O migrating
O herding
O schooling
•
cooperative hunting
Answer:
D). Cooperative hunting
Explanation:
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Explain how energy from the sun can eventually be used for active transport in the alimentary canal
Answer:
The chemical energy is locked up as carbohydrate in the green plants. ... The locked-up energy - usually in the form of ATP - becomes available to be used for various metabolic processes in the body, including active transport in the alimentary canal.
Explanation:
Which energy is use is to active transprt
ATP energy
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