Answer:
Avery and his coworkers showed that the agent responsible for changing nonvirulent bacteria into virulent bacteria was DNA.
Explanation:
DNA (deoxyribonucleic acid) is the hereditary unit of an organism. The DNA is formed of nucleotide sequence that codes for specific proteins in an organism. Bacteria are prokaryotic organisms, that is, their genetic material is not enclosed in a nuclear membrane. The study performed by Avery and his coworkers used enzyme that inactivates different classes of biomolecules in the heat killed virulent bacterial strain. This mixture was used to inoculate the avirulent bacterial cell to conclude that the factor for converting bacteria to virulent was DNA.
Learn more about DNA here:
https://brainly.com/question/13789418
#SPJ4
Cervical dysplasia is the presence of __________ in the cells that make up the inner lining of the cervix.
Cervical dysplasia is the presence of precancerous cells in the cells that make up the inner lining of the cervix.
What is mild cervical dysplasia?Cervical dysplasia is a change from normal that affects cells on the surface of the uterus, the lowest part of the uterus that opens at the top. These changes are not cancer, but if left untreated they can develop into it.
The causes of dysplasia are Multiple causes can lead to this condition, such as smoking, hormonal changes, HPV infection, genetic changes.
See more about cervical dysplasia at brainly.com/question/6648237
#SPJ1
Which three processes are methods oDuring which phase of meiosis does crossing over of chromosomes occur?f genetic recombination?
The phase during which crossing over of chromosomes occurs is prophase 1.
What is meiosis?Meiosis is a type of cell division mammals which leads to the production of sex cells such as egg and sperm.
There are various phases in meiosis which include:
prophase, metaphase, anaphase, and telophase.The stage of meiosis in which crossing over of chromosomes occurs is prophase 1.
Learn more about cell division here:
https://brainly.com/question/15028999
#SPJ1
Which of the following would best be mined using Hydraulic Mining?
Select one:
O a. Placer Deposits
O b. Magmatic Deposits
O c. Hydrothermal Deposits
O d. Residual Deposits
Answer:
c
Explanation:
hydrothermal deposits
Lactic acid is a common fermentation product in bacteria and animal cells. It is produced after glycolysis when ___________ is reduced by electrons received from NADH.
Answer:
Lactic acid is a common fermentation product in bacteria and animal cells. It is produced after glycolysis when Pyruvate is reduced by electrons received from NADH.
What is the purpose of strip cropping?
a.
prevent soil erosion
b.
maintain nutrient levels
c.
reduce plant disease
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
Answer:
A
Explanation:
What is the purpose of strip cropping?
= Prevent soil erosion...
[tex]...[/tex]
Answer:
A. Prevent soil erosion
Explanation:
Margret had developed a nasty case of shingles. Once the actual blisters went away, she could not believe the neuropathic pain that remained. It was as if her nerves were on fire and she could trace every nerve pathway in the affected areas. The type of local anesthetic patch that would be indicated is
The type of local anesthetic patch that would be indicated is Lipoderm.
What is Lipoderm?Transdermal delivery of drugs for pain, nausea, and veterinary usage has been accomplished with Lipoderm. When treating pain, several medications might be combined to focus on the many pain-causing factors. Lipoderm is a particularly efficient medicine delivery system for cats since it penetrates the inner ear skin.A patented liposomal component in Lipoderm, a chic substitute for conventional PLO gels, may improve the permeability of a number of active ingredients. In contrast to PLOs, which have a sticky feel, it is smooth and creamy to the touch.An anhydrous form of Lipoderm, PCCA has been developed for active pharmaceutical ingredients (APIs) that are unstable in water.To learn more about local anesthetics refer to:
https://brainly.com/question/17119740
#SPJ4
Which of the following cannot cause evolution?
Recombination
Mutation
Natural Selection
All of the choices can cause evolution
Assume that you have discovered a new chemical mutagen that modifies guanine so that it mispairs with thymine when thymine is in the template DNA strand during DNA replication. However, this mispairing is limited to when the modified guanine is being added to the newly replicating DNA strand. When the modified guanine is in the template DNA strand it always pairs normally, with cytosine being added to the growing newly synthesized strand. What type of mutation would you predict would be caused by the new chemical mutagen
A-C base substitution mutation will be caused by the new chemical mutagen.
When A is in the template strand during the first round of replication, G is added to the new daughter strand as it pairs to A due to mispairing. It is assumed that this mispairing only occurs when the freshly duplicated strand is being joined to the modified guanine. C is added to the opposing strand during the second round of replication, when the daughter strand that contains G serves as a template for replication. Therefore, C has replaced A in the diagram. A was thus removed from the site, and the C-G pair will now fill the space where the A-T pair had been. A was thus replaced by C.learn more about mutation here: https://brainly.com/question/23030726
#SPJ4
The embryonic period is the second period of prenatal development and extends from the third week through the eighth week. Select one: True False
True.
The embryonic period is the second period of prenatal development and extends from the third week through the eighth week.
What is embryonic period?Your kid goes through a phase of rapid change after conception known as the embryonic stage. From the fifth through the tenth week of pregnancy, this phase lasts. The infant is referred to as an embryo at this point. The embryonic stage is when a lot of changes take place.
What happens during embryonic stage?The heart starts to beat and the organs develop and start to work during the embryonic period.
Why is embryonic stage important?The brain develops during the embryonic period, which is crucial.
Learn more about embryonic here:
https://brainly.com/question/15875287
#SPJ4
In the Tonicity of Red Blood Cells lab, you mixed whole blood with solutions of different concentrations in order to
The whole blood with solutions of different concentrations mixed in order to find the tonicity of each solution.
Osmosis is the movement of water from the high solvent concentration to low solvent concentration. The solution on addition of the red blood cells becomes opaque and the cells can be observed under the microscope. If the solution is hypertonic, the red blood cell loses water and undergo shrinkage. If the solution is isotonic, the water flow will be at equal rates and the cell will remain intact. If the solution is hypotonic, the water will flow into the cell causing the cell to swell up.
Learn more about tonicity here:
https://brainly.com/question/13275972
#SPJ4
what do you conclude from the study of embryos?
We can get a glimpse into an organism's evolutionary history through embryology. As an illustration, consider terrestrial vertebrates, which include mammals, birds, amphibians, and reptiles. There are numerous parallels between fish embryos and other animal embryos when we examine the early stages of the development of various groups of animals. All of these animal groups have gill arches in their developing embryos. These develop into functioning gills in fish embryos. They go on to develop into the morphological structures that make up our ears in the majority of terrestrial animals. This helps us understand how certain animal traits may have evolved from more basic ones. Cases like these add to the body of evidence showing that lobe-finned fishes are the ancestors of terrestrial mammals.
How does embryology prove evolution happened?Embryology offers no proof. The descriptive study of embryos is known as embryology. It has been discovered that embryos from all species have parts that should naturally belong to less advanced organisms. By the time the embryo develops into a fully formed live being, those structures have either vanished or changed into something more adapted to the particular environment. Because the ancestors of the species whose embryo we are investigating truly possessed such qualities and made use of them, we refer to them as atavistic features, from the Latin term for forefather. These traits are numerous. I'll name one. An embryonic human resembles an embryonic monkey almost exactly, down to the tail. Human genes guarantee (nearly invariably) that the tail resorbs, leaving just a little remnant with five tail bones, the coccyx, whereas the genes of the monkey ensure that it is still present at birth. Human embryos, as well as monkeys and many other animals, feature fish-like gill clefts. In our situation, they were born as more beneficial organs.
Therefore, embryology detects phenomena that call for justification. They would just be bizarre if they weren't. Every creature's embryology may be thoroughly examined to build a comprehensive picture that is perfectly compatible with evolution. That is but one piece of the puzzle of findings and information that support the hypothesis (i.e., explanation) of evolution.
To be fair, I should point out that there are alternative hypotheses that might account for the embryological findings as well as the variety and at the same time linear similarity of all living things, whether ancient and modern. Accepting these alternative explanations allows you to forget about learning anything and skip over years of fruitless inquiry in the fields of embryology, paleontology, biology, and anatomy. It also greatly simplifies the process of comprehension. All you need to do is put your trust in the scientifically illiterate authors from two centuries ago who, through no fault of their own, may have known nothing about biology, anatomy, or physiology because those fields didn't even exist at the time. As a result, they could have observed nothing and conducted zero research.
That does however require you to understand that the tens of thousands of scientists who have carried out all the work over the past 200 years have all been frauds, and that there is a massive global conspiracy devoted to disseminating lies and misinformation in order to enrage a small American sect known as creationists. even if the majority of those scientists practice religions similar to those of everyone else. Why? It must be to exact revenge on those hateful Christians, who have undoubtedly caused them terrible, unnamed suffering.
Comparative embryology studies the parallels and discrepancies among the embryos of distinct animals. Examining embryo similarities can demonstrate shared ancestry.
What is the study of embryos?Embryology is a branch of science that focuses on the conception, development, and growth of the embryo. For example, all vertebrate embryos have tails and gill holes.
It focuses on the prenatal stage of development, which begins with gamete creation, fertilization, zygote formation, embryonic and fetal development, and human birth.
The two main processes at work are growth and differentiation. These lead to the body's formation of distinctive tissues and organs that are specialized to perform certain activities.
Therefore, embryology studies the parallels and discrepancies among the embryos of distinct animals. Examining embryo similarities can demonstrate shared ancestry.
Learn more about embryos, here:
https://brainly.com/question/29765982
#SPJ2
Imagine that these animals lived in a costal habitat, Due to global warming, sea level rise and the area was flooded. Which group would MOST LIKELY be best adapted for this change in habitat?
Animals that can live in water will best adapted for this change in habitat.
Which group would be best adapted for this change in habitat?That group would most likely be best adapted for this change in habitat which can survive in both on land and water because the area has now water so that group which can swim and live in water will survive while the rest will die or extinct from that area.
So we can conclude that animals that can live in water will best adapted for this change in habitat.
Learn more about habitat here: https://brainly.com/question/23780904
#SPJ1
If the area is said to be flooded due to global warming, the group that would most likely adapt to this change are the animals in group E.
What are the group E animals?These are the groups of animals that are able to seek shelter in such periods as floods by rising to the top of the water and staying afloat.
These types of animals are amphibians as well as reptiles. They can be able to swim on this water for a long time.
Read more on global warming here:
https://brainly.com/question/3553382
#SPJ1
Complete questionImagine that these animals lived in a costal habitat, Due to global warming, sea level rise and the area was flooded. Which group would MOST LIKELY be best adapted for this change in habitat?
Group a.
Group b
Group C
Group D
Group E.
Of the ____________ globins that make up hemoglobin, two are identical and called ____________ globins, and the other two are called beta globins and are also identical.
Of the four globins that make up hemoglobin, two are identical and called alpha globins, and the other two are called beta globins and are also identical.
Structure of HaemoglobinEach of the four subunits of hemoglobin has a polypeptide chain and a heme group.The iron protoporphyrin IX prosthetic heme group, which is connected to a polypeptide chain with residues of 141 (alpha) and 146 (beta) amino acids, is present in all hemoglobins. A histidine's N is linked to the ferrous iron of the heme. A polypeptide chain phenylalanine of the porphyrin ring wedges it into its pocket. Alpha and beta chains, two varieties of the polypeptide chains that make up adult hemoglobin, are comparable in length but have different amino acid sequences. Both adult and embryonic human hemoglobins have the same alpha chain.To learn more about Haemoglobin refer to:
https://brainly.com/question/13152679
#SPJ4
If an entire chromosome is missing or added that ultimately leads to a recognizable _________, also known as a cluster of distinct characteristics that tend to occur together.
Answer:
syndrome
Explanation:
If an entire chromosome is missing or added that ultimately leads to a recognizable syndrome also known as a cluster of distinct characteristics that tend to occur together.
Thus, A syndrome is a collection of distinguishing characteristics that frequently appear in clusters of people with the same ailment.
For instance, Marfan syndrome manifests in the skeleton, the heart, and the eyes, among other physiological systems.
Although not all people with Marfan syndrome will exhibit the exact same combination of symptoms, they will frequently cluster in these three regions. Down syndrome, Klinefelter syndrome, and fragile X syndrome are more instances of well-known genetic disorders.
Thus, If an entire chromosome is missing or added that ultimately leads to a recognizable syndrome also known as a cluster of distinct characteristics that tend to occur together.
Learn more about Syndrome, refer to the link:
https://brainly.com/question/14034986
#SPJ7
In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.2. What is the frequency of individuals that are heterozygous for this allele
In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.2. The frequency of individuals that are heterozygous for this allele is 0.32.
Hardy Weinberg Equilibrium Principle A stable, idealized population's constant frequency of alleles and genotypes is described by the Hardy-Weinberg equilibrium principle. In a sizable population, random mating, or spontaneous mutations are necessary for Hardy-Weinberg equilibrium.The Hardy-Weinberg equation dictates that the sum of the allele frequencies for each allele at the locus must equal 1, therefore p + q = 1. The Hardy-Weinberg equation is also written as p2 + 2pq + q2 = 1, where p is the population's frequency of the "A" allele and q is that of the "a" allele.
The homozygous genotype AA frequency is represented by p2, the homozygous genotype aa frequency by q2, and the heterozygous genotype aa frequency by 2pq in the equation.
Here, q = 0.2. Because of this, p = '1- q = 1 - 0.2 = 0.8.
The population of individuals who are heterozygous will now be 2pq, or 2 * 0.8 * 0.2 = 0.32.
Hence, This indicates that the population is heterozygous with a frequency of 0.32.
To learn more about Hardy Weinberg Principle refer to:
https://brainly.com/question/1365714
#SPJ4
Ingrid drew a diagram to compare two ways in which biodiversity can be protected.
The area marked Y has the goal of capturing and later releasing animals in the wild.
What does the region Y represent?From the attached image of the diagram drawn by Ingrid, the region Y represents the intersection of habitat preservation and captive breeding.
Thus the animals found there will be captured and later released.
In conclusion, the diagram shows the various ways of wild animal breeding.
Learn more about wild animal breeding at: https://brainly.com/question/14322964
#SPJ1
Select the correct answer from each drop-down menu. If a heterozygous male with the genotype Ww is mated with a homozygous recessiv of the offspring will be heterozygous. W WW WW W W 33 W If the heterozygous, Ww, is crossed with a homozygous dominant, WW, then the pro is W . W W WW WW WW WW W WW WW Reset Next 20 Select the correct answer from each drop - down menu . If a heterozygous male with the genotype Ww is mated with a homozygous recessiv of the offspring will be heterozygous . W WW WW W W 33 W If the heterozygous , Ww , is crossed with a homozygous dominant , WW , then the pro is W . W W WW WW WW WW W WW WW Reset Next
If a heterozygous male with the genotype Ww is mated with a homozygous recessive female with the genotype ww, then the probability of heterozygous offspring is 0.5 or 50%. The offspring are Ww, Ww, ww, and ww.
What is Genotype?A genotype may be defined as the ultimate combination of the alleles of those genes which are selected for specific studies.
If a heterozygous male with the genotype Ww is mated with a homozygous dominant female with the genotype WW, then the probability of heterozygous offspring is 0.5 or 50%. The offspring are WW, WW, Ww, and Ww.
Therefore, it is well described above.
To learn more about Genotypes, refer to the link:
https://brainly.com/question/22117
#SPJ1
Answer:
The guy above for the first part but was wrong for the second part.
Hope this helps!
Explanation:
Please help ASAP.
This is Science
Answer:
Abbreviation of as soon as possible
In your own words define the word angiosperm.
ty!
Answer:
These are seed-producing plants. They are differentiated from gymnosperms, by features like flowers, producing fruits containing seeds, and the presence of endosperm within the seeds. Plants that produce flowers are called angiosperms.
Explanation:
Which parts of photosynthesis occur in the thylakoid membranes of the grana?.
Answer:
The light-dependent reactions take place in the thylakoid membranes in the granum (stack of thylakoids), within the chloroplast. Figure: The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions).
Explanation:
Each stack is called a granum (the plural is grana) which is suspended in a fluid called stroma. The light-dependent reactions occur in the grana; the light-independent reactions take place in the stroma of the chloroplasts.
How might an inherited trait, such as height, be influenced by both genetic and environmental factors?
Answer:
Explanation:
For most individuals, though, height is controlled largely by a combination of genetic variants that each have more modest effects on height, plus a smaller contribution from environmental factors (such as nutrition). More than 700 such gene variants have been discovered and many more are expected to be identified.
Functional regeneration of axons occurs more frequently in the peripheral nervous system (PNS) than in the CNS because of the
Functional regeneration of axons occurs more frequently in the peripheral nervous system (PNS) than in the CNS because of two main reasons which are-
The environment in the central nervous system is not suitable for the regeneration or repair of axons.The axons of the neurons in the CNS cannot upregulate genes for the growth or regeneration of the axons. Whereas the axons in the PNS can upregulate these genes to a much greater extent than the CNS.The central nervous system(CNS) and the peripheral nervous system(PNS), are the two branches of the nervous system in the body. The central nervous system consists of the spinal cord and the brain. While the peripheral nervous system consists of the nerves and neurons that arise from the spinal cord and the brain. It is difficult for axons to repair themselves in the central nervous system because these axons are present in and around the main structures that control the entire nervous system.
Learn more about axon regeneration here-
https://brainly.com/question/12966228
#SPJ4
The cholesterol associated with animal cell membranes
a) is an abnormality resulting from a diet high in cholesterol.
b) makes the cell membrane fluid at room temperature.
c) helps to stabilize the cell membrane at body temperature.
d) helps solidify the membranes when the room temperature is below freezing.
e) is attached to membrane proteins and extends into the watery environment surrounding the cell.
Cholesterol is one of the molecules composing the cell membrane. b) makes the cell membrane fluid at room temperature.
What is the role of cholesterol in the cell membrane?The cell membrane is composed of two lipidic bilayers, cholesterol, proteins, and glucans incrusted in between.
Cholesterol is one type of lipid.
These molecules are incrusted in the membrane between the hydrophobic tails of lipids.
Their proportion on both sides of the membrane is almost the same.
Cholesterol is a significant molecule that contributes to the membrane fluidity, separates phospholipids, and interact with membrane proteins regulating in their activity.
The correct option is b). makes the cell membrane fluid at room temperature.
You can learn more about cholesterol at
https://brainly.com/question/2114495
https://brainly.com/question/4551833
#SPJ1
The respiratory distress that accompanies emphysema is caused by: repeated exposure to cigarette smoke chronic stretching of the alveolar walls massive constriction of the bronchioles acute fluid accumulation in the alveoli
The respiratory distress that accompanies emphysema is caused by: repeated exposure to cigarette smoke
A condition that affects the alveoli (small air sacs) of the lungs. The transfer of oxygen and carbon dioxide in the lungs occurs in the walls of the alveoli. In emphysema, the alveoli swell abnormally, the walls are damaged, and breathing becomes difficult.
The main cause of emphysema is long-term exposure to air irritants, including cigarette smoke. Marijuana smoke. Air pollution
Symptoms of emphysema are :
Frequent coughing or wheezing.Cough that produces a lot of sputum.Shortness of breath, especially with physical activity.Whistling or squeaking noise when breathing.Chest tension.Learn more about emphysema here:https://brainly.com/question/22864243
#SPJ4
please help im stuck grrrr
Answer:
neutral stimulus
Explanation:
hope this helps! :)
Eunice is a scientist studying a grassland area in the midwestern United States. It contains many species of flora and fauna that coexist and remain relatively balanced. There have also been no recent disturbances in the area.
Which topic is Eunice’s project most likely about?
secondary succession
pioneer species
primary succession
climax communities
PLS HELP QUICK
The topic that Eunice’s project is most likely about is climax communities (option D).
What is a climax community?A climax community in ecology refers to a group of interdependent organisms interacting with one another and through the process of ecological succession has reached a steady state.
A steady or balanced state refers to a state whereby each species in the community can coexist with no disturbance.
Therefore, the topic that Eunice’s as a scientist is most likely about is climax communities.
Learn more about climax community at: https://brainly.com/question/1018506
#SPJ1
Which of the following statements is NOT true?
A. Genetic drift is the change in the relative frequency in which a gene variant occurs in a population.
B. Genetic drift is a gradual shift in the gene frequencies of small population.
C. Genetic drift results in same genotypic ratios.
D. Variations in gene frequencies within population in genetic drift occur by chance.
Jamie is writing a research paper about wind patterns which digital resource should he consult
Answer:
Us goverenment article
Explanation:
A tissue sample was taken from an infected wound and cells were viewed under the microscope. Each cell contained a cell wall, cell membrane and genetic material but no nuclear membrane. From this informative you can determine that the infection was
1. An unidentified eukaryotic cell
2. A parasitic animal
3. A parasitic plant
4. An unidentified prokaryotic cell
An unidentified prokaryotic cell. Thus, option "4" is correct.
What atr prokaryotes and eukaryotes?Prokaryotes are the unicellular organisms that do not contain nucleus and membrane bound organelle in their cell. Their genetic material is present in the cytoplasm.
On the other hand, eukaryotes have true nucleus that contains the genetic material (DNA). They also contain membrane bound specialised organelles (such as mitochondria, endoplasmic reticulum, golgi complex).
Thus, option "4" is correct.
To learn more about Prokaryotes click here:
https://brainly.com/question/15329345
#SPJ1
Most of the molecules that determine blood types in humans are ______ embedded in the plasma membrane of red blood cells with attached ______ that extend from the cell surface.
Most of the molecules that determine blood types in humans are proteins embedded in the plasma membrane of red blood cells with attached sugars that extend from the cell surface.
What is the plasma membrane?The fluid mosaic model, which is the presently accepted explanation for the composition of the plasma membrane, was originally put forth in 1972. Although this model has changed over time, it still offers a reasonable fundamental explanation of the structure and function of membranes in many different cells.
The plasma membrane is a mosaic of elements, primarily phospholipids, cholesterol, and proteins, that move fluidly and freely in the plane of the membrane. In other words, a membrane diagram only represents a moment in a dynamic process where proteins and phospholipids are continuously slipping past one another.
Blood type in humans: A positive, A negative, B positive, B negative, AB positive, AB negative, O positive, and O negative are the eight primary blood types. Your Rh type is indicated by the positive and negative (once called Rhesus). There are 34 other recognized blood types, often known as blood group systems, in addition to ABO and Rh.
Learn more about plasma membrane structure here:
https://brainly.com/question/14789712
#SPJ4