Answer:
directional selection
Explanation:
The directional selection is a type of Darwinian selection where a particular phenotype is favored in the population, thereby modifying the allelic frequencies to increase the proportion of the favored phenotype. Biston betularia, also known as peppered moth, is a species that was influenced by directional selection in its recent past. Before the industrial revolution, the frequency of light-colored moths was predominant compared to the darker-colored phenotypes, because this color has higher adaptive fitness in a clean, no pollution environment, thereby light-colored moths were able to avoid predatory birds. However, during the industrial revolution, the frequency of dark-colored moths increased in response to pollution (i.e. darker environment), thereby conferring a higher adaptive fitness to darker phenotypes.
Answer:
Dark wings
Explanation:
All the following are ways by which animals help to sustain the carbon cycle except
A when they die, they decompose to release carbon atoms
B. feeding directly or indirectly on plants C. drinking water from streams and ponds
D. breathing
Answer:
Option(C): drinking water from streams and ponds
Oxygen is a reactant.
Select one:
a. Neither Photosynthesis nor Cellular Respiration
b. Both Photosynthesis and Cellular Respiration
c. Cellular Respiration
O d. Photosynthesis
Answer:
c
Explanation:
In the African savanna, more wildebeests are born than the environment can support. Which is most likely to happen over a period of time?
One of the most common causes of acute tubular necrosis (ATN) is:________.
a. ischemic conditions.
b. cytotoxic agents.
c. immune reaction.
d. prolonged postrenal kidney injury.
Answer:
a. ischemic conditions.
Explanation:
Hello,
In this case, considering that acute tubular necrosis (ATN) has been widely acknowledged as a harmful medical condition showing off the death of tubular epithelial cells that give the form to the renal tubules of the kidneys; it presents with acute kidney injury. Thus, common causes of ATN include low blood pressure and use of nephrotoxic drugs which is more technically known as a. ischemic conditions in which the blood flow is very weak.
Regards.
An object could have some of the characteristics of life, yet still not be considered alive.
A: True
B: False
Vaccination is a process of injecting a dead or weakened form of a pathogen into the body. How does this help strengthen the immune system? It allows the body to increase its internal temperature. It allows the body to regulate the inflammatory response. It allows the body to keep pathogen information for future infections. It allows the body to increase its desire to eat healthy food.
Answer:
It allows the body to keep pathogen information for future infections.
Explanation:
Vaccination is the process whereby a substance called VACCINE is injected into body in order to prepare the immune system for resistance against infections. A vaccine contains the harmless or dead version of a pathogen called ANTIGEN, which functions to give the immune system defense mechanism against that form of pathogen in future.
The vaccine works by stimulating the immune system of the body to fight against the antigens in the same way it will fight against an actual pathogen in the future. Hence, the body keeps the information on how to combat such pathogens when there is an actual infection.
Answer
The answer is C edge 2020
Explanation:
Which purpose is the main function of the light-dependent reactions of photosynthesis?
Answer:
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem.
The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then used in the light-independent reactions.
A mixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. Arrange the lipids in order of elution by placing the first lipid to elute at the top.
a. triglyceride
b. cholesterol
c. sphingosine
d. phosphatidyl serine
e. sphingomyelin
A mixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. Arrange the lipids in order of elution by placing the first lipid to elute at the top.
a. triglyceride
b. cholesterol
c. sphingosine
d. phosphatidyl serine
e. sphingomyelin
The lipids in order of elution by placing the first lipid to elute at the top are as follows:
1. triglyceride
2. cholesterol
3. sphingosine
5. phosphatidyl serine
4. sphingomyelin
What are Lipids?Lipids are defined as a broad group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins, monoglycerides, diglycerides, phospholipids, and others. Important functions of lipids include storing energy, signaling and serving as structural components of cell membranes.
A lipid is a type of organic compound that is insoluble in water that includes fats, waxes, oils, hormones, and some components of membranes and serves as energy-storing molecules and chemical messengers.
When we arrange the elution on the basis of charge, triglyceride and cholesterol have no charge placed on first and second respectively, while sphingosine has 1 charge. and phosphatidyl serine and sphingomyelin have more than 2 charges
Thus, the lipids in order of elution by placing the first lipid to elute at the top are as follows:
1. triglyceride
2. cholesterol
3. sphingosine
5. phosphatidyl serine
4. sphingomyelin
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A couple has just learned their neonate is diagnosed with osteogenesis imperfecta, and they
ask, "What caused our child to get this disease?" What should the health care provider teach
the couple about their neonate's condition?
Answer:
osteogenesis imperfecta is an inherited genetic disease that mainly affects the bones.
Explanation:
Osteogenesis imperfecta is an inherited genetic disease associated with alterations in collagen synthesis, which have been shown to increase the risk to suffer bone fractures. This genetic disorder is characterized by different health problems including, among others, fragile bones, reduced skeletal mass, skin hyperlaxity, malformations in the central nervous system, etc. Clinically, osteogenesis imperfecta must be managed by an interdisciplinary medical team, since patients may present a clinical picture ranging from mild to lethal. In the first place, it is imperative to provide health care to avoid fractures, exercises to maintain muscle mass, exercise to improve motor skills, skincare by specialized dermatologists, etc.
The disease 'osteogenesis imperfecta' is caused by the neonate inheriting it
from either of the parent because it's a genetic disorder. The health care
provider should teach the parent about how to prevent the effect of having
such disease such as bone fractures.
Osteogenesis imperfecta is a genetic disorder inherited by offspring from
their parent. The disease involves individuals having very brittle bones which are easily broken. The nurse should teach the parent to adopt bone strengthening steps such as adequate calcium intake and physiotherapy.
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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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What is the maximum magnification of most classroom compound light microscopes? 500x 1,000x 2,500x 5,000x
Answer:
2,500
Explanation:
Answer:
the answer is 2,500x
Outside the lining of the alveolus is blood, which is at a gauge pressure of 5 mmHg, while air is contained inside the alveolus. What is the absolute pressure inside the alveolus
Answer:
765 mmHg
Explanation:
The gauge pressure = 5 mmHg
To get the absolute pressure we use the relationship
[tex]P_{ab}= P_{g}+ P_{atm}[/tex]
where [tex]P_{ab}[/tex] is the absolute pressure = ?
[tex]P_{g}[/tex] is the gauge pressure = 5 mmHg
[tex]P_{atm}[/tex] = atmospheric pressure = 760 mmHg
substituting, we have
[tex]P_{ab}[/tex] = 5 mmHg + 760 mmHg = 765 mmHg
Choose a strategy to clone genes known only by a mutant phenotype in organisms with highly efficient transformation procedures and relatively small genomes.
Answer:
By combining traditional genetic mapping with whole-genome sequencing (next-generation sequencing)
Explanation:
Map-based cloning, also named positional cloning, is a technique used to identify genetic sequences linked to markers whose exact physical localization in the genome is known. Map-based cloning has shown to be useful to clone genes, however, this approach is limited to the existence of mutant phenotypes in different organisms/accessions/strains. In recent years, map-based cloning has been combined with next-generation sequencing methodologies in order to clone genes in background of single mutants without information on multiple organisms. This type of strategy has the potential for identifying causal mutations and thus clone genes in species with small genomes and high transformation efficiencies such as, for example, Arabidopsis thaliana.
Now that you figured out the name of the person that absconded with your grandmother is Andrew P. Oliver, check out the scrap of paper to figure out the code.
attached below
Answer:
gym cat dog food parrot train
Explanation:
rain
Answer:
dress, cat, ring, tiger, tv, rain, pear, apple, cow, bath, pig, hat, rice, ski, eyes
Drag each label to the correct location.
Using the legend, arrange the minerals that you tested according to their hardness. The hardness will increase from left
to right.
Mineral Letter
Quartz
sypsum
Gy
calcite
C С
magnetite
M
graphite
Gr
feldspar microcline F
apatite
A
tale
Hardne
Nourite
Mardines - 6.5
pyrite
Q GY CM Gr.
FA
From left to right, the correct order of the minerals from the least hard to the hardest is ⇒ Graphite, Talc, Gypsum, Calcite, Fluorite, Apatite, Magnetite, Pyrithe, Feldespat, Quartz.
Theoretical frame:
Hardness is one of the physical properties of minerals and is a significant one when identifying and recognizing them.
Hardness measures the resistance level of a surface to abrasion. In the specific case of minerals, it measures how minerals resist being scratched or penetrated.
The hardness level is determined by an attempt to scratch or produce a mark on an unmarked surface using sharp elements, such as nails, copper coin, glass, or a steal knife. Notice that these elements also vary in their hardness.
There are different methods used to define hardness, and they are not comparable to each other. The Mohs hardness method defines an ordinary qualitative scale that characterizes the mineral according to their resistance to being scratched by a harder element.
According to the Mohs hardness scale, the level in which the given minerals are placed is as follows,
Graphite ⇒ 1 - 2Talc ⇒ 1Gypsum ⇒ 1.5 - 2Calcite ⇒ 3Fluorite ⇒ 4Apatite ⇒ 5 Magnetite ⇒ 5 - 6.5Pyrithe ⇒ 6Feldespat ⇒ 6 - 6.5Quartz ⇒ 7Link to a related question:
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I need help please???
Answer:
The first one is called longitudinal wave .
the longish point is , i think 1
5. Polysaccharides are synthesised in plants by the process of
A Condensation B. glycolysis
C. hydrolysis D. oxidation
Answer:
This review focuses on the in vitro synthesis of polysaccharides, the method of which is “enzymatic polymerization” mainly developed by our group. Polysaccharides are formed by repeated glycosylation reactions between a glycosyl donor and a glycosyl acceptor.
Explanation:
i am not sure but i hope it will help you
Polysaccharides are synthesized in plants by condensation reactions (Option A).
Dehydration synthesis, also known as condensation, is a process by which two molecules are linked together following the removal of a molecule of water (H2O).In dehydration synthesis, two small molecules are condensed to form a large molecule in a process, thereby releasing a molecule of water.Some well-known examples of dehydration synthesis reactions are the condensation of two amino acids to produce a dipeptide or the condensation of many monosaccharides to form a polysaccharide.In conclusion, polysaccharides are synthesized in plants by condensation reactions (Option A).
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What is the application of Gene Editing in Primary T Cells?
Creative Biogene CRISPR/Cas9 Platform provides comprehensive gene editing services for various cell lines, especially for primary T cells. With years of experience, our talented scientists have established an efficient assay to edit genome in T cells by CRISPR/Cas9. At CRISPR/Cas9 PlatformCB, we offer a gene knockout service for customer as well as isolation of primary T cell service. Based on our excellent platform, our staff are focusing on supplying the best services and products.
https://www.creative-biogene.com/crispr-cas9/service/gene-editing-in-primary-t-cells.html
Answer:
Creative Biogene CRISPR/Cas9 Platform provides comprehensive gene editing services for various cell lines, especially for primary T cells. With years of experience, our talented scientists have established an efficient assay to edit genome in T cells by CRISPR/Cas9. At CRISPR/Cas9 PlatformCB, we offer a gene knockout service for customer as well as isolation of primary T cell service. Based on our excellent platform, our staff are focusing on supplying the best services and products.
Drag each tile to the correct location.
Sort the descriptions based on whether they are related to asexual reproduction or sexual reproduction.
creates genetically
unique offspring
creates genetically
identical offspring
organism doesn’t have to
waste energy to find a
mate
organism needs time to
reach adulthood to
reproduce
requires the contribution
of two parents
requires the contribution
of a single parent
Answer:
SEXUAL REPRODUCTION:
-creates genetically unique offspring
-organism needs time to reach adulthood to reproduce
-requires the contribution of two parents
ASEXUAL REPRODUCTION:
-creates genetically identical offspring
-organism doesn’t have to waste energy to find a mate
-requires the contribution of a single parent
Explanation:
Living organisms employ two types of reproduction to produce their offsprings. They are sexual reproduction and asexual reproduction.
Sexual reproduction is that reproduction involving the fusion of two sex cells from opposite sex individuals i.e. male and female. Sexual reproduction forms offsprings with unique genetic contents, which is as result of the meiotic process that each individual organism undergoes to produce gametes or sex cells (sperm and eggs). Since there must be a fusion of gametic cells, sexual reproduction requires the contribution of two parents (a male and a female). Also, the parents only undergo meiosis to produce gametes at certain points in their life. Hence, they have to wait to reach adulthood to do that.
On the other hand, asexual reproduction involves only the contribution of one parent as the fusion of genetic material is not needed. Hence, the offsprings form by cellular division that makes it genetically identical to the parent cell. Energy is not needed to find a mate, the organism simply reproduces on its own by dividing into daughter cells.
Identfy the incorrect statement about active transport. a)It doesn't require the use of a cell's energy b)None of the choices. c)It moves substances across the cell membrane against their concentration gradients d)Sometimes active transport involves the use of carrier proteins to transport substances in much the same way as passive transport.
Answer:
can you please answer jahmarlon adu
Explanation:
please i will fail if you dont
The incorrect statement according to the question is “Active transport requires a cell's energy” option (a) is correct.
Active transport is a cellular process that moves substances against their concentration gradients, from areas of lower to higher concentration. This movement of solutes against the concentration gradient necessitates energy expenditure by the cell. Active transport often involves the use of carrier proteins or pumps embedded in the cell membrane, which undergo conformational changes to transport substances across the membrane.
This energy is primarily provided by ATP hydrolysis, a process that releases energy from ATP molecules. In contrast, passive transport processes, like diffusion and facilitated diffusion, do not require energy expenditure and move substances along their concentration gradients. Thus, active transport distinctly relies on the cell's energy to function, option (a) is correct.
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The ____ ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the ______ bases are synthesized separately and then coupled to ribose-5-phosphate via the C-N glycosidic bond.
Answer:
The purine ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the pyrimidine bases are synthesized separately and then coupled to ribose-5-phosphate via the C-N glycosidic bond.
Explanation:
In the de novo synthesis of nucleotides, their metabolic precursors such as aminoacids, ribose-5-phosphate, CO₂ and NH₃ are used as starting materials.
In purine nucleotide synthesis, the ring structure is built up on ribose-5-phosphate of PRPP by addition of one or a few atoms one at a time starting with the amino group donated by glutamine until the first intermediate inosinate is synthesized.
In pyrimidine ring synthesis, orotate is first synthesized from carbamoyl phosphate and aspartate, and then is attached to ribose-5-phosphate of PRPP, before it is then converted to the common pyrimidine nucleotides starting from uridylate.
In quiet breathing, muscular effort is used mainly in inspiration, and expiration is largely passive, due to elastic recoil of the lung. It results in a pattern change between expiratory and inspiratory flow. Explain changes you observed in the recordings you obtained.
Answer:
The summary of something like the particular question is demonstrated in the following portion on either the clarity.
Explanation:
Inspiration depends on either the diaphragm contracting, as well as the influence including its external intercostal has been limited throughout normal breathing. Maximum inhalation or even just expiration time depth, as well as rate, are fairly directly proportional to one another because.We may link the whole observation to something like the sequence of expiratory versus inspiratory movement as it takes much longer than either the inspiratory speed throughout our sample since expiration becomes passive yet requires having to return to something like the steady levels.Plant cell under a microscope
Answer:
Under the microscope, plant cells are seen as large rectangular interlocking blocks. The cell wall is distinctly visible around each cell. The cell wall is somewhat thick and is seen rightly when stained. The cytoplasm is also lightly stained containing a darkly stained nucleus at the periphery of the cell.
Explanation:
I hope this will help you buddy
Mitochondrial and chloroplast genomes typically Mitochondrial and chloroplast genomes typically encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA. encode for ribosomal and transfer RNAs. encode all of the proteins needed for aerobic respiration and photosynthesis, respectively. encode some of the proteins needed for aerobic respiration and photosynthesis, respectively. are composed of primarily noncoding DNA.
Answer:
The correct answer is "encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA".
Explanation:
Most organisms have a mitochondrial or a chloroplast genome in addition to the main genomic sequence located in the cell nucleus. The genes that are located in these organelles' genome include the genes that are used directly in the mitochondrion or chloroplast , including: proteins needed for aerobic respiration and photosynthesis (for instance genes involved in oxidative phosphorylation), respectively, as well as ribosomal and transfer RNA, which serve to the translation of proteins.
A class is debating pros and cons of using sea walls to reduce beach erosion. What is the best way for them inform their
decision-making?
They should each write an opinion paragraph to send to the local paper.
They should hold the debate on stage, so that they can be judged.
They should watch movies about beaches.
They should research wave action and collect data about erosion in the area.
Answer:
They should research wave action and collect data about erosion in the area.
Explanation:
everyone has their own opinion, and movies aren't gonna make the cut, and no one wants to see a debate in school, so they should research first to get the info they need
What evidence would prevent scientists from classifying viruses as living organisms?
Answer:
The following evidences would prevent scientists from classifying viruses as living organisms:
1) They have subcellular or acellular (non-cellular) structure.
2) Do not respire or excrete.
3) Can be crystallized.
4) Can be stored as chemicals.
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Peace!Determine if the following statement is true or false, and why: We use plants in many facets of our society; they are used for medicine, building, food, and clothing.
Answer:
False
Explanation:
It is true that flowers are use in many facets but in this question it is asked that wheather it is used for medicine, building, food and clothing. Yes some flowers are used to make medicine but we can't use flowers to make building and we eat some flower but flowers are not used in clothing only paper or silk flowers is used to make and it is man-made flower...
I hope this is helps you....
Plants are very useful and plays a boon for our society as they are used for medicinal purpose, building, food as well as clothing.
Thus, given statement is true.
What is the use of plants?Plants plays a vital role in our life as they are required for basic human purposes.
Medicinal use of plants:
Medicinal plants such as aloe vera, tulsi, neem, turmeric and ginger helps to cure common viral infectionsSeveral medicinal plants are used in medicines that cures cough, and other chronic diseasesPlants as source of food:
Spinach, cabbage, lettuce are the plants used for eating purpose.
Plants support rainfall and helps to bind the soil that prevent soil erosion.
Plants also protect us from air pollution.
Therefore,plants are very useful and plays a boon for our society as they are used for medicinal purpose, building, food as well as clothing.
Thus, given statement is true.
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The medical term ____________________ describes a pus-filled lesion on the eyelid resulting from an infection in a sebaceous gland.
Answer:
the medical term is hordeolum
Describe the transport properties of the loop of Henle and explain the interactions between the ascending and descending limbs
Answer:
The loop of henle is a part of the renal functional unit.
This handle has an ascending part and a descending part.
In the descending loop, the urine that is formed inside enters a hypotonia, since a large amount of water is absorbed and the concentrations of solutes in the urine decrease, thus generating a hypoosmolar solution, that is, with less molarity.
In the ascending loop of henle, the opposite arises, ionic channels appear that increase the concentration of solutes, this is how the urine that runs through the interior of the ascending loop of henle becomes hyperosmolar.
Hyperosmolarity is the increase in concentrations of solutes, and the increase in molarity of the solution, which in this case would be urine.
Explanation:
A very important fact is that urea is absorbed in the ascending henle loop.
What is an ecosystem?
Answer:
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. ... Ecosystems can be very large or very small.
Explanation:
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