The function of primers positioned on the dna strand by primase are the starting point for DNA synthesis.
DNA replication is a process of doubling the DNA chain that occurs in the S phase of the cell cycle before mitosis, assisted by the enzyme DNA polymerase. DNA polymerase forms new DNA strands by extending oligonucleotides assisted by primase enzymes. The existing DNA strand that is elongated during this replication is called the primer.
Primers are the existing DNA strands that are elongated during replication. These primers consist of 5-10 DNA nucleotides and work as a starting point for DNA synthesis. In strands that have the 3' end open at the replication fork, primer is only added to the end of this strand.
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the drop down answers are
1.
cardiac
skeletal
smooth
2.
brain
muscle tissue
spinal cord
Answer:
1. skeletal
2. brain
How would replacing the aluminum core of an electromagnet with an iron
core affect the electromagnet?
OA. It would become stronger.
OB. It would become weaker.
C. Its strength would vary randomly.
D. Its strength would stay the same.
Replacing the aluminum core of an electromagnet with an iron core would make it to become a stronger electromagnet.
What is an electromagnet?An electromagnet refers to a magnet that is produced by electromagnetic induction. The core of an electromagnetic determines the overall strength of the electromagnet.
Since aluminum is a weaker magnet than iron, replacing the aluminum core of an electromagnet with an iron core would make it to become a stronger electromagnet.
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The terrestrial invertebrates, such as the insects of the Carboniferous grew very large. They evolved many innovations such as specialized mouthparts, and the new ability to _______.
They evolved many innovations such as specialized mouthparts, and the new ability to fly.
What is the Carboniferous period?The Carboniferous period is the period that existed between 350 - 300 million years ago.
Some terrestrial invertebrates which are air-breathing insects, myriapods and arachnids are known to have existed in that era.
With time these insects tend to develop new features through mutations and natural selection leading to;
Development of specialised mouthparts that helps in feeding andThe ability to fly.Natural selection is defined as the process that is used by organisms to adapt properly especially to a new environment which helps them to reproduce and survive.
Mutation is defined as the change in the genetic sequence of a chromosome.
Therefore, the terrestrial invertebrates, such as the insects of the Carboniferous evolved many innovations such as specialized mouthparts, and the new ability to fly.
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Write a testable question that could be used to further investigate the topic of using the fossil record to identify changes in life on earth.
What kind of organisms existed in the past?
How did organisms move about? are some testable questions hat could be used to further investigate the topic of using the fossil record to identify changes in life on earth.
Fossils are the remains of extinct plants and animals that have been encased in layers of rock.The existence of fossil records demonstrates how living things have altered or evolved over time. The specific order in which these species have lived has been identified by paleontologists. For instance, older rocks contained simpler species, while younger rocks contained complex life.Existence of species with transitional traits that are placed in sequential stratigraphic order is one pattern in the fossil record. This indicates that the fossil record demonstrates minute changes in the structures of creatures across time, supporting evolution.learn more about fossil here: https://brainly.com/question/11224681
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If a mutation occurs when forming a _____, the mutation could be passed on to the next generation.
If a mutation occurs when forming a germ cell the mutation could be passed on to the next generation. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gametes will carry the mutation and it will be passed on to the next generation when the individual successfully mates.
A mutation passed to the next generation when acquired mutation occurs in an egg or sperm cell. Once an acquired mutation is passed down, it is a hereditary mutation. Acquired mutations are not passed down if they occur in the somatic cells, meaning body cells other than sperm cells and egg cells.
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If the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called:__________
According to the research, if the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called adrenergic.
What is the adrenergic synapse?It is the molecular complex that selectively receives the signal of adrenaline and noradrenaline in the body's cells.
It is involved in various functions of the sympathetic nervous system, which involves fight and flight responses.
Therefore, we can conclude that according to the research, if the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called adrenergic.
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A usable dilution of disinfectant is one that prevents growth of bacteria when compared with the positive control tube. reduces the growth of bacteria when compared to the positive control tube. increases the growth of bacteria when compared to the positive control tube.
When compared to the positive control, a disinfectant dilution is considered to be useful if it stops bacterial growth.
Choosing a disinfectant:
When selecting a disinfectant, keep the following things in mind:
The range of bacteria that need to be eliminated. Look into the specifications of the manufacturers.The conditions of usage of disinfectant.Application of disinfectants :
Activity: it is necessary for efficient disinfection since, once diluted, it degrades over time. Different disinfectants deteriorate at different rates. Obtain data from the manufacturers. Disinfectants that don't have a color indication, like Virkon, should be marked with an expiration date.Touch time: it has to be verified that the manufacturer's data to make sure the organism stays in contact for the specified amount of time. Considering that solid materials like cells and tissue granules are difficult for disinfectants to penetrate, autoclaving would be a more effective way to inactivate.Therefore the correct choice is an option (A).
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____________________ theory is the theory that proposes that chloroplasts and mitochondria evolved from certain types of bacteria that eukaryotic cells engulfed.
The endosymbiotic theory proposed that the mitochondria and the chloroplast evolve from some types of bacteria which the eukaryotic cells engulfed.
The endosymbiotic theory tries to explain how the eukaryotic cells came into existence from prokaryotic cells. According to this theory, the eukaryotic organelles like the mitochondria and the chloroplasts were actually free living prokaryotes and were taken in one after the other via endosymbiosis.
This theory has been backed by evidences which establish the phylogenetic similarity between mitochondria and bacteria and also between chloroplast and cyanobacteria. The evidences include the presence of circular DNA in both chloroplast as well as the mitochondria and also the fact they divide by binary fission like bacteria.
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A client is admitted with cellulitis and experiences a consequent increase in white blood cell count. during what process will pathogens be engulfed by white blood cells that ingest foreign particles?
During phagocytosis, pathogens are engulfed by white blood cells that ingest foreign particles.
In addition to being present in practically every type of cell in multicellular species, phagocytosis is a fundamental function for nourishment in unicellular creatures. But only a specific class of cells known as professional phagocytes are highly effective at phagocytosis. These specialized cells include osteoclasts, neutrophils, monocytes, dendritic cells, and macrophages. Professional phagocytes are in charge of clearing pathogens from the environment and presenting antigens to lymphocytes to trigger an adaptive immune response. Fibroblasts, epithelial cells, and endothelial cells are referred to as non-professional phagocytes since they are only capable of performing phagocytosis with poor efficiency.learn more about phagocytosis here: https://brainly.com/question/12977970
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Hemiplegia is the Group of answer choices paralysis of the side of the body that is contralateral to the injured brain region. paralysis of the side of the body that is ipsilateral to the injured brain region. loss of sensory feedback from the side of the body that is contralateral to the injured brain region. loss of sensory feedback from the side of the body that is ipsilateral to the injured brain region.
Hemiplegia is the paralysis of the side of the body that is contralateral to the injured brain region.
Hemiplegia is a condition brought about by brain damage or spinal cord injury that prompts loss of motion on one side of the body. That outcomes in a fluctuating level of weakness, stiffness (spasticity), and absence of control on affected side of the body. The effects of hemiplegia relying upon the area and degree of the injury. The definition comes from the Greek 'Hemi' = half.
Hemiparesis on the contralateral side of the body, since the corticospinal tract projects dominatingly to the contralateral side of the body. Harm to the right half of the mind influences the left half of the body, and harm to the left half of the cerebrum influences the right half of the body.
Loss of motion happens on the body inverse to the side of the brain in which the causal lesion happens.
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A bypass or shunt operation that diverts the cerebrospinal fluid is treatment for:.
Hydrocephalus
What is hydrocephalus?An excessive buildup of cerebrospinal fluid (CSF), the clear fluid that surrounds the brain and spinal cord, is the main symptom of the illness known as hydrocephalus. The ventricles in the brain, which are empty areas, enlarge abnormally as a result of this excessive accumulation. Pressure on the brain's tissues as a result of this dilatation could be detrimental. Both congenital and acquired hydrocephalus are possible.
How is hydrocephalus treated?The surgical installation of a shunt device is the most common treatment for hydrocephalus. With the help of this system, CSF (cerebrospinal fluid) is switched from one location in the central nervous system to another one where it can be absorbed as part of the circulatory system. A different method known as third ventriculostomy can be used to treat a small number of patients. The third ventricle's floor is punctured during this surgery to allow the CSF to pass through the blockage and move toward the area of resorption near the brain's surface.
I understand the question you are looking for is this:
A bypass or shunt operation that diverts the cerebrospinal fluid is treatment for
a. meningitis.
b. hydrocephalus.
c. encephalitis.
d. cerebral palsy.
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The presence of five digits is a plesiomorphic characteristic and is, therefore?
The presence of five digits is a plesiomorphic characteristic and is, therefore option A. a primitive mammalian pattern retained to some degree in most primates.
What is true about the presence of five digits on hands and feet?The occurrence of the five digits on both the hands and feet i known to be a kind of a primitive mammalian trait, and it is one that can also be seen in majority of primates.
Note that a lot of animals around in the world today are known to only have five digits (in the fingers or toes). The act of having five fingers in in a lot of cases is seen mostly as a recessive trait.
Therefore, The presence of five digits is a plesiomorphic characteristic and is, therefore option A. a primitive mammalian pattern retained to some degree in most primates is correct.
See full question below
The presence of five digits is a plesiomorphic characteristic and is, therefore:
Group of answer choices
A. a primitive mammalian pattern retained to some degree in most primates
B .the only truly distinctive primate trait
C. characteristic only of apes and humans
D. characteristic only of primates
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The leverage of the biceps brachii applies its force six times closer to the fulcrum (elbow joint) than the resistance. this means it will need to exert ________ kg of force to support a load of 6 kg.
The leverage of the biceps brachii applies its force six times closer to the fulcrum (elbow joint) than the resistance. this means it will need to exert 36 kg of force to support a load of 6 kg.
The triceps brachii (TB) is the only muscle that lies along the posterior humerus. It is a 3-headed, fusiform muscle that, on the shoulder, works in a third-elegance lever since the force is implemented among the joint axis and the weight.
Within the elbow joint, the triceps brachii muscle attaches to the olecranon method of the ulna posterior to the elbow joint. While the triceps contract, it pulls the olecranon procedure proximally, swinging the ulna distally and lengthening the forearm.
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Ms. C has recently received a heart transplant. Unfortunately, she is producing large quantities of antibodies against antigens in the donor heart. From what is Ms. C suffering
Answer: she is suffering from something called rejection syndrome
Explanation:
hope this helped a bit
In the global open oceans, microbial blooms in surface water around the poles is dominated by ___________, and by ____________ in tropical regions.
In the global open oceans, microbial blooms in surface water around the poles is dominated by the Dinoflagellate Polarella glacialis, and by Trichodesmium in tropical regions.
What are Microbial blooms?The microbial blooms are also known as bacterial blooms. These are caused by an sudden increase in the growth of the bacteria across the water columns.
This sudden increase of the bacteria in the water columns leads to cloudy and milky appearance of the water body which is easily visible.
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The two most common igneous rocks are basalt and granite. Basalt is commonly found ________ and granite is found _______
The two most common igneous rocks are basalt and granite. Basalt is commonly found ocean land and granite is found continental land .
The thickness of oceanic land is 5 Km and continental land is 30 km. The continental land is made up of granite and ocean land is made of lava rock called basalt. The crust is thinnest layer of the earth. What is the oceanic crust?The outermost layer of the oceanic portion of the divergent plate boundaries.It is made of different types of basalt.It is thin and dense.What is continental crust?The thick part of the earth crust which acquires large masses on the land.It is also the layer of igneous, sedimentary and metamorphic rocks.Its thickness is about 25 to 70 kmlearn about earth
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Schleiden concluded all plants are made of cells and Schwann concluded the same thing about animals. Together, how did they contribute to cell theory?
They proved that cells are neither created nor destroyed.
They published several ideas on cell generation.
O They created the theories on the division of cells.
O They claimed that cells were the basic unit of all living organisms.
They created the theories on the division of cells.
What about cells in plant and animal?The smallest unit of life, cells serve as the foundation for all living things. Each part of a cell has a specific purpose. Both differences and similarities exist between plant and animal cells. The mitochondria, cell membrane, cytoplasm, and nucleus are all present in both plant and animal cells.The fundamental unit of life in species belonging to the kingdom Plantae is the cell. They are eukaryotic cells, which have specialized components called organelles and a real nucleus that performs several duties.Animal cells are typical eukaryotic cells since they have a membrane-bound nucleus and organelles and are encased in a plasma membrane.
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Answer:
D
Explanation:
I got it right on my quiz also if you look at what Schleiden and Schwann wrote they even said that “All living things are made up of one or more cells.” Which basically explains option D.
A group of proteins in the thylakoid membrane that shuttles electrons between the proteins and other carriers is called a(n)____chain.
A group of proteins in the thylakoid membrane that shuttles electrons between the proteins and other carriers is called an Electron transport chain.
In photosynthetic eukaryotes, the electron transport chain is observed on the thylakoid membrane. here, light energy drives electron transport through a proton pump and the ensuing proton gradient causes the next synthesis of ATP.
The light reactions are finished by means of the thylakoid membrane protein complexes photosystem II (PSII), cytochrome b6/f complicated, photosystem I (PSI), and ATP synthase. Many proteins that play crucial capabilities in both reactions have poor roles in viral pathogenesis.
The most outstanding thylakoid transporter is the proton-translocating ATP-synthase. Currently, 4 additional transporters were recognized inside the thylakoid membrane of Arabidopsis thaliana, namely one copper-transporting P-ATPase, one chloride channel, one phosphate transporter, and one ATP/ADP service.
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Children's steady growth, brain maturation, and intellectual advances make middle childhood a time for more _____.
Children's steady growth, brain maturation and intellectual advances help in making the middle childhood a time for more independence.
The middle childhood ranges from six to twelve years of age and is a very important phase for the growth and development of a child. It is in this stage of life that a child gains social, cognitive, emotional and physical advancements.
The middle childhood basically lays the foundation for adulthood. The brain maturation in this phase involves the growth of certain structures like the frontal lobe which enhances learning and decision making. Steady growth and all the intellectual advancements aid in generating a sense of autonomy and independence in children. This helps in refining the child's capabilities.
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How much time does it take for a 1-solar-mass protostar to reach the main sequence?
a. 10–100 million years
b. less than 10,000 years
c. 100,000 to 1 million years
d. 1–10 billion years
a. 10–100 million years is the answer.
Solar mass stars are thought to accrete rapidly. Premain sequence solar mass protostars are probably formed by the collapse of part of a molecular cloud into the "cloud core" in about 105 years (Hartmann, 2000). Strong outflows and jets are sometimes observed.
Star formation begins with the collapse of molecular clouds and fragmentation into highly dense masses. These masses initially contain about 0.01 solar masses, but increase in mass as the surrounding matter is collected by accretion.
Protostars are very young stars, still collecting mass from their original molecular clouds. The protostar stage is the earliest in the process of stellar evolution.
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fossil fuel and nuclear plants both heat warer in order to turn into __?
Hello,
fossil fuel and nuclear plants both heat water in order to turn into turbines.
What is magmatic differentiation? how might this process lead to the formation of several different igneous rocks from a single magma?
Magnetic differentiation is the process by which a single homogeneous magma is able to produce two or more than two of different composition,which ultimately forms diverse rock types.
That process would have to be one that causes magma composition to change.magnetic diffraction can occur by the chemical reaction between the magma and the first crystals to solidify from it.
Igneous rock form when magma cools and crystalline on the surface of the earth or inside the earth crust. Inside the crust all the magma is develops underground in the lower crust or upper mantle. Magma undergo bulk chemical change during the partial melting process, cooling emplacement , or eruption.
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What kind of traits found in a group of organisms provides the strongest evidence for common ancestry of that group?
What kind of traits found in a group of organisms provides the strongest evidence for common ancestry of that group? Although the characteristics are similar, they serve various purposes in the group members.
What is common ancestry?The idea that all cellular life forms on earth share a single genesis is widely held. The universality of the genetic code and the universal conservation of several genes, especially those that code for essential elements of the translation system, support this viewpoint. By contrasting the capacity of a common-ancestry model with a multiple-ancestry model to predict the sequences of universally conserved proteins, an impressive recent work asserts to provide a formal, homology independent evaluation of the Universal Common Ancestry hypothesis.
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The main function of tonsils is to detect and protect against infections agents that are?
The main function of tonsils is to detect and protect against infections agents that are ingested and/or inhaled.
What are tonsils?The tonsils are structures located in the back of throat, which play diverse functions including immune responses.
The tonsils are well known to protect against microorganisms such as bacteria and viruses when they are found in the airways and gastrointestinal tract.
In conclusion, the main function of tonsils is to detect and protect against infections agents that are ingested and/or inhaled.
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The cell body of a neuron contains the?
Answer:
the nucleus..
The cell body is the spherical part of the neuron that contains the nucleus and connects to the dendrites, which bring information into the neuron, and the axon, which sends information to other neurons.
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The discarded theory of blending inheritance most closely resembles what inheritance
The discarded theory of blending inheritance most closely resembles incomplete dominance.
What is blending inheritance?An antiquated biological notion from the 19th century is the concept of blending inheritance. According to the hypothesis, children inherit any trait by averaging the values of their parents for that trait.According to the theory of blended inheritance, an offspring combines the values of both parents for a given attribute. As opposed to blended inheritance, particulate inheritance states that a child inherits individual units or genes from each parent. Offspring thus combines the traits of both parents.Incomplete dominance is the term used to describe phenotypic "blending" of two features, which implies that neither trait is truly dominant over the other.The manifestation of phenotypic traits that are intermediate between those of the parents, such as pink flower color from red and white parents. Inheritance was a now-discredited hypothesis that claimed children's genetic make-up was a pure admixture of their parents'.Learn more about inheritance here:
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If the heterozygous phenotype is intermediate between that of the homozygotes this is called:____.
A. epistasis.
B. incomplete dominance.
C. independent assortment.
D. polygenic.
E. codominance.
If the heterozygous phenotype is intermediate between that of the homozygotes this is called independent dominance. The correct answer is B. incomplete dominance.
Incomplete dominance refers to the phenomenon in which two true-breeding parents interbred to create an intermediate child (sometimes referred to as heterozygous). Alternate names for it include partial dominance and intermediate inheritance. In the case of partial dominance, the variations (alleles) are expressed in a reduced ratio rather than as dominant or recessive.
A new heterozygous phenotype is produced by imperfect dominance, often known as the dilution of the dominant allele relative to the recessive allele. For instance
the shape of hairthe size of handsthe pitch of human voicepink colour of flowers(snapdragons and four o’clock flowers)To know more about independent dominance click here
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Which of the below features was not used to identify the early Homo distinction from Australopithecines
The correct answer is reduction in tooth size.
The anatomy of the foot and pelvis are the feature of Australopithecus afarensis that is used to definitively classify this species as a hominin.
AustralopithecinesAustralopithecines are an adaptive radiation of early hominins, all of which were to some extent bipedal, had brains that were only slightly larger than those of apes, and had adaptations to a diet that included at least occasionally hard-to-chew items. They have been identified through research on perhaps ten species that lived in central, eastern, and southern Africa between 4.2 million and 1.0 million years ago. Understanding australopithecines is essential to comprehending not only the diversity of early hominins but also the origins of Homo. Our genus Homo probably originated from this radiation, albeit we are unsure from which species.
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What is pulmonary respiration? I need this answer ASAP pls
Answer:
The breath through the lungs is called pulmonary respiration.
Explanation:
The mechanism of lung breathing: Includes breathing movement, exchange of gases, lungs, transport of gases through the blood and exchange of gas by tissue. Breathing Movement.
Identify the cells and structures associated with the seminiferous tubule in this micrograph by clicking and dragging the labels to the correct location.
Seminiferous tubules are the specific site of sperm production, also known as spermatogenesis, and provides the necessary microenvironment to support this process. The micrograph parts shown in the First diagram are:
Seminiferous tubulesBasement MembraneSpermatogenic cellsSpermatogoniaSperm CellsInterstitial CellsThe second diagram shows:
Theca FolliculiiNucleusNucleolusZona PellucidaPrimary oocyteStratum GranulumPrimary FollicleGranulosa CellThe seminiferous tubule is lined by a complex stratified epithelium containing two distinct populations of cells, the spermatogenic cell that develops into spermatozoon, and the Sertoli cell that plays a supportive role.
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