Certain cellular organelles use oxygen to release energy from glucose true or false
In the 1950's, emily had a procedure done to her in which the doctor used an instrument to cut the nerve fibers connecting her prefrontal cortex to the rest of the brain. this procedure, called _____________, left her withdrawn and unable to care for herself.
A lobotomy
Lobotomy is a surgical procedure in which the nerve pathways in the brain's prefrontal lobe are severed. Lobotomy was formerly used as a radical therapeutic measure for the treatment of schizophrenia, manic depression, mania (bipolar disorder), and other mental illnesses.
Minerals that contain the elements silicon and oxygen are called ______.
What is true about gestation periods of endangered animals?
A. Endangered animals are unable to reproduce so they have no gestation period
B. Endangered animals typically have longer gestation periods
C. Some endangered animals have short gestation periods while others have longer gestation periods
D. Endangered animals typically have very short gestation periods
Gestation periods of endangered animals can vary widely. The length is determined by biological factors, not by their endangered status, and can range from very short to very long depending on the species.
The gestation periods of endangered animals, like those of all animals, can vary greatly. The misconception that endangered animals have specific gestation periods because of their conservation status is incorrect. The truth is that some endangered animals have short gestation periods, while others may have longer gestation periods. For example, a fox, which may be endangered depending on the species, has a gestation period of 57 days, whereas the African elephant, which is also at risk of endangerment, has one of the longest land mammal gestations at 640 days.
Gestation periods are determined by biological and evolutionary factors, not by the endangered status of a species. This means that an endangered animal's ability to reproduce and the length of its gestation is related to its biological needs and adaptations, and not directly influenced by its conservation status.
Contractions of the small intestine have three functions: mix chyme with digestive juices, allow for
What would be the potential environmental effects of cutting down 100 acres of forest in order to build a new shopping mall? Make sure to focus on environmental and not economic effects.
1. It increases carbon dioxide in the atmosphere.
Plants and trees play a vital role in keeping the planet habitable. As most of us probably know, photosynthesis (a process that happens in plants) filters carbon dioxide gases out of the air and releases oxygen. This means that cutting huge numbers of plants can have a very negative impact on the environment. It will allow green house gases to build up and contributing to global warming.
2. It further promotes the development of drought.
Global warming brings about a lot of unfavorable consequences, including drought, which is already affecting many parts of the world. To mention, deforestation encourages higher levels of water consumption for growing livestock and crops. Instead of having a natural system of moisture recycling forests provide, water goes to food and livestock production, removing it from the natural cycle of life.
3. It focuses only on short-term gains.
According to research, the world is already producing more than 10% of the calories it needs for the entire world population today. In fact, many countries are consuming more than 1,000 calories a day per capita, which is more than the needed amount for proper health. We should take note that, if more food is produced, then people will tend to focus more on short-term gains, instead of meeting long-term needs.
4. It is a limited resource.
Regardless of the many monetary benefits we can get from deforestation at first, these timber profits could go away since there will not be any additional trees being planted to replace those that are harvested. Livestock and farms may not be nearly as profitable as a living, considering the thriving forests on a planetary scale.
5. It contributes to the extinction of wildlife.
The removal of a habitat is often the foundation for the extinction of a species. When forests are cut down, it is not only the trees that are being lost, but also countless amounts of wildlife, such as mammals, birds, insects, amphibians and many other animals that make them their home. With nowhere else for them to go, they will be forced into areas that are not suited for them. In fact, there has been a drastic decline in the amount of wildlife in certain areas that have experienced severe effects of deforestation. In essence, we are removing a piece of ourselves when we no longer allow for animals to exist as they always have.
Originally ,scientists classified organisms into five kingdoms based in part on _____ structure A) cell B) family C) organ
Match each type of scientist with a statement appropriate for her field of study. 1. astronomer "My focus is on the origin and structure of the universe." 2. meteorologist "Algae is an important life form, providing food for many marine life forms." 3. cosmologist "There's a cold front moving in from the West, which may bring snow." 4. oceanographer "That star constellation is called Orion." 5. geologist "Some rocks develop an unusual property of fluorescence, which makes a rock look as though it is glowing."
Answer:
1. The statement, that is, the star constellation is called Orion matches with an astronomer. An astronomer studies galaxy and everything associated with it, like planets, constellations, stars, and others.
2. The statement, that is, there's a cold front moving in from the West, which may bring snow matches with a meteorologist. A meteorologist refers to an individual who studies weather, he is the one who analyzes the weather.
3. The statement, that is, my focus is on the origin and structure of the universe matches with a cosmologist. A cosmologist studies cosmos, or the universe in all of its glory. They study not only the galaxy, however, the entire universe in general.
4. The statement, that is, algae is an important life form, providing well for many marine life forms matches with an oceanographer. An oceanographer refers to an individual who studies oceans and the forms of marine life associated with it.
5. The statement, that is, some rocks develop an uncommon property of fluorescence, which makes a rock seem as though it is glowing matches with a geologist. A geologist refers to an individual who studies Earth, and its components like soil, rocks, and the composition of the Earth.
Shown below is a drawing showing the result of an experiment in which an rna molecule is allowed to mix with genomic dna that has been denatured by boiling, and the two molecules are allowed to hybridize. the dna strand is presumed to be the lighter-shaded one on the top. note that only one strand of dna is shown. what does the result above indicate about the relationship between the dna and the rna?
The experiment's result showing RNA hybridizing with a denatured DNA strand suggests a complementary relationship, indicating that the RNA may be messenger RNA (mRNA) synthesized from the DNA template.
The result of the experiment where an RNA molecule is mixed with denatured genomic DNA and allowed to hybridize indicates a relationship between the DNA and the RNA. In this context, hybridization refers to the pairing of complementary nucleotide sequences between the two molecules, suggesting that the RNA molecule has a sequence that complements the DNA strand. Often, the RNA molecule is messenger RNA (mRNA), which is synthesized as a copy of one of the DNA strands and carries the genetic information for protein synthesis. Therefore, observing hybridization between the RNA and a denatured DNA strand implies that the DNA contains sequences that are templates for the RNA, affirming the central dogma of molecular biology, which states that DNA is transcribed into RNA which then is translated into protein.
A muscle group that works with and assists the action of a prime mover is a(n) ________. a muscle group that works with and assists the action of a prime mover is a(n) ________. antagonist and fixator fixator only synergist only antagonist and synergist antagonist only
The fossils called homo floresiensis were dated to:
Hugh, a 56-year-old health care worker, has no laboratory evidence of immunity to measles or mumps and cannot confirm that he had either disease. how many doses of mmr vaccine should hugh receive?
The radishes that were treated with cobalt-60 for the lab "Radical Radishes" are expected to _____
Answer:
The answer is Undergo mutational changes.
Explanation:
Cobalt-60 emits gamma beams, which have the ability to break covalent bonds that exist in DNA atoms, along these lines causing changes, which can be passed on to posterity amid proliferation, if the transformations are not fixed.
What are the 5 main kingdoms of living things?
Organisms that are resident microbiota are best described as
microorganisms that remain with the person throughout life
The body’s resident microbiota are the microorganisms such as bacteria, fungi, protists and viruses that lives on a long term basis on or within the human body such as tissue, gastrointestinal tracts, liver, mammary glands, skin etc.
why should farmers be concerned about unused nitrates contaminating surface water and groundwater supplies?
a. unused nitrates increase oxygen in the water
b. unused nitrates reduce algae growth
c. excessive amounts of nutrients speed up the eutrophication process, and harm water quality
d. excessive amounts of nutrients cause overpopulation of fish
Answer:
the answer is defiantly not D nitrates can kill fish not overpopulate them the best answer i can think of is A
Explanation:
Farmers be concerned about unused nitrates contaminating surface water and groundwater supplies by unused nitrates increase oxygen in the water.
What is Groundwater supplies?Depending on a variety of conditions, the water table may be deep or shallow and may rise or sink. The water table may increase due to strong rainfall or the melting of snow, or it may sink due to extensive groundwater pumping.
Rain and snow melt that seeps into the voids and fissures beneath the surface of the earth replenishes or recharges groundwater supplies.
Due to the rapid consumption of groundwater compared to its natural replenishment, there are severe water shortages in several parts of the world. In some places, human activity has contaminated the groundwater.
Therefore, Farmers be concerned about unused nitrates contaminating surface water and groundwater supplies by unused nitrates increase oxygen in the water.
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Edward Jenner’s smallpox inoculation experiment was based on an observation by a dairymaid that she could not get smallpox because she had already had cowpox. How did Jenner form his hypothesis from this observation? He asked what would happen if he deliberately inoculated someone with cowpox fluid from another person. He tested different existing inoculations to see which one was most effective in preventing smallpox. He observed dairymaids milking cows with cowpox to see if the statement was true before forming a hypothesis. He drew a conclusion about cowpox infection based on the comment he overheard from the dairymaid.
Edward Jenner developed his hypothesis on smallpox vaccination after observing that milkmaids who had cowpox were immune to smallpox; he tested this by inoculating a boy with cowpox, who subsequently did not fall ill from smallpox exposure.
Edward Jenner's hypothesis about smallpox inoculation was formulated from the observation that milkmaids who previously caught cowpox did not contract smallpox. This common belief among the population caught Jenner's attention, suggesting that cowpox could potentially confer immunity against the more deadly smallpox. To test this hypothesis, Jenner deliberately inoculated a young boy with fluid from a cowpox lesion. After the boy recovered from a mild cowpox infection, Jenner exposed him to smallpox but the boy did not become ill, thus proving the efficacy of what we now term vaccination. His method was safer than variolation, an earlier practice of exposing individuals to smallpox itself in a controlled manner to induce immunity, and laid the groundwork for modern immunization practices.
What structure connects the 2 cerebral hemispheres?
Which of the following statements is FALSE?
A,The Moon usually sets about 12 hours after it rises.
B.The Moon rises in the west and sets in the east.
C.The Full Moon rises around sunset.
D.The Moon takes a little more than 29 days to orbit the Earth.
Free nucleotides must be available in a cells nucleus to produce mrna strands. where do these free nucleotides come from
Free nucleotides for mRNA synthesis in a cell's nucleus are synthesized within the cell from dietary sources and through cellular biochemical pathways. These nucleotides are essential for transcription, where they pair with a DNA template strand to form mRNA, which then transmits genetic information out of the nucleus for protein synthesis.
Explanation:Origin of Free Nucleotides for mRNA Synthesis
Free nucleotides, needed for the production of messenger RNA (mRNA), are present in the nucleus of a cell and are synthesized there as well. These nucleotides form the building blocks for new RNA synthesis during the process of transcription. When a cell needs to produce proteins, transcription is initiated in the nucleus. During transcription, the DNA double helix unwinds to expose a single template strand to which complementary RNA nucleotides bond, forming an mRNA strand.
RNA nucleotides include the nitrogenous bases adenine, cytosine, guanine, and uracil (U), which replaces thymine found in DNA. In eukaryotes, transcription factors and RNA polymerases facilitate the aligning and bonding of ribonucleotides to the DNA template. Unlike DNA polymerases, RNA polymerases can initiate RNA synthesis without a primer. The newly formed mRNA strand is a complementary copy of the DNA template strand and, once complete, dissociates from the DNA, exits the nucleus, and travels to the ribosomes for protein synthesis.
DNA replication, on the other hand, involves a different process where RNA primers are synthesized by primase to initiate DNA synthesis by DNA polymerases. For both DNA replication and mRNA synthesis, a pool of free nucleotides within the cell is essential. These nucleotides are generated through cellular nutritional intake and nucleotide synthesis pathways
in relation to humans, b. burgdorferi is a/an ______ and the tick is a/an ______.
What is the function of the green gallbladder in a fetal pig?
Gallbladder is a small, green, tear-shaped organ which is located in the right lateral lobe of the liver. The function of the green gallbladder in a fetal pig is to store bile, which is then released into the small intestine to help in emulsifying fats to aid in digestion.
When is a woman most likely to become pregnant answer.com?
In this food web, identify the decomposer.
Net primary production is: the net energy received by plants after subtracting what is turned into plant material. only the energy received by plants that is converted into protein. the amount of material a plant accumulates as a result of photosynthesis. the total energy received by plants from sunlight. the total energy received by plants from sunlight in usable wavelengths.
Net primary productivity represents the energy left with plants after accounting for respiration, available for consumption by primary consumers. It's a measure of energy accumulation within an ecosystem, calculated as the total amount of carbon fixed per year minus the amount oxidized during respiration, reflecting the rate at which photosynthetic organisms convert solar energy.
Explanation:Net primary production, also referred to as net primary productivity, is a crucial parameter in the field of ecology. It refers to the quantity of energy or organic material that remains with primary producers (like plants) after deducting the energy used for respiration. This net energy is then available for consumption by organisms in the next trophic level, the primary consumers.
In terms of ecosystem energy flow, net primary productivity is the measurement of energy accumulation within an ecosystem. This is calculated as the total amount of carbon fixed per year minus the amount of carbon that gets oxidized during respiration. For example, if a plant photosynthesizes 20,810 kcal/m²/yr, and uses 13,187 kcal/m²/yr for respiration and heat loss, the remaining 7,632 kcal/m²/yr signifies the plant's net primary productivity.
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What is the gap between the axon terminals of a motor neuron and the sarcolemma of a skeletal muscle cell called?
Final answer:
The gap between the axon terminals of a motor neuron and the sarcolemma of a skeletal muscle cell is known as the synaptic cleft. This space is essential for the communication between the neuron and muscle cell, allowing for muscle contraction.
Explanation:
The gap between the axon terminals of a motor neuron and the sarcolemma of a skeletal muscle cell is called the synaptic cleft. This small space is crucial for the transmission of electrical signals necessary to stimulate muscle contraction. When an electrical impulse reaches the axon terminals, it triggers the release of the neurotransmitter acetylcholine (ACh) into the synaptic cleft. Acetylcholine diffuses across the cleft and binds to ACh receptors on the motor end-plate, which is part of the muscle fiber sarcolemma, initiating depolarization and contraction of the muscle fiber at the neuromuscular junction.
The macronutrients are carbohydrates protein and fat true or false
-The answer is false
Flamingos are born white, but they turn pink because of the food they eat; this is an example of how ____________ , a physical factor, can affect phenotypes
The phenotype is the visible physical or biochemical characteristic of an individual organism which is determined by both genetic factors (genotype) and environmental influences. There are many environmental factors and they include diet, climate, illness and stress. If environmental factors have a strong influence this means the phenotypic plasticity is high (capable to change).
Final answer:
Environmental factors like diet can affect the phenotypes of organisms such as flamingos, whose white feathers can turn pink due to the ingestion of carotenoid-rich foods. This illustrates the interaction between genotype and environment in the expression of physical traits.
Explanation:
Flamingos are born white but turn pink due to certain environmental factors affecting their phenotypes. This change in feather color among flamingos in an isolated population is most likely the result of their diet, as they consume foods rich in carotenoids, which are organic pigments that the birds accumulate in their feathers. This is a prime example of how the environment interacts with genotype to influence an organism's observable characteristics, or phenotype.
In addition to diet, other environmental factors such as sun exposure, temperature, and even soil acidity can affect the phenotype of various organisms. Genes provide the baseline, but it's the interaction with the environment that often determines the final outcome of physical traits. For example, human skin tan can vary with sun exposure, and the gender of some reptiles can be determined by the incubation temperature of their eggs.
Why do you suppose that tropical rain forests are the richest terrestrial ecosystems in terms of plant and animal diversity?
This type of muscular "dystrophy" has increased in infants since they are now placed on their backs to prevent sids. the sternocleidomastoid muscle shortens due to the position
Final answer:
Placing infants on their backs to sleep effectively reduces SIDS but has led to muscular shortening and cranial deformations, such as the shortening of the sternocleidomastoid muscle, and conditions like brachycephaly and plagiocephaly, although these do not affect brain development.
Explanation:
The campaign to place infants on their backs during sleep, known as the “Back to Sleep” campaign, has been successful in reducing the incidence of Sudden Infant Death Syndrome (SIDS), which is a goal that has saved countless lives. However, a side effect of this sleeping position has been noted, with an increase in certain types of muscular and skeletal issues, specifically referring in this case to the sternocleidomastoid muscle potentially shortening, which can lead to conditions such as cervical dystonia, commonly known as spasmodic torticollis. This posture can also lead to cranial deformation such as brachycephaly and plagiocephaly, where the back of the infant’s head becomes flattened either uniformly or asymmetrically due to constant pressure against the sleeping surface.
It should be noted that despite these physical developments, the cranial deformations do not affect brain development, and in many cases, the appearance improves as the child grows older. Nevertheless, the topic is a reminder that, while preventative measures can have significant benefits, they may also introduce new challenges that must be addressed.
Preventive approaches such as alternating the position of the infant's head during sleep and providing tummy time when the infant is awake and supervised can help mitigate the risk of these muscular and skeletal changes.