Answer:
The correct answer is evidence of deep sleep (stage 4).
Explanation:
Sleepwalking or somnambulism is the condition found most commonly in the children between the ages 6 and 12. Though it is usually a harmless condition, however, spontaneous occurrences should be helped out with the help of a physician.
In the condition, the person goes from deep sleep to light drowsiness in a general sleep pattern. The individual generally encounters with few rounds of REM and non-REM sleep, or brisk movement of the eye.
where is earths next ocean most likely to form
Why would an unprotected traveler's blood boil in the mesosphere?
The largest part of the human brain is the (paired) ___(1)____, the other major subdivisions of the brain are the __(2)___ and the __(3)__. the cavities found in the brain are called __(4)__. they contain __(5)__.
The largest part of the human brain is the (paired) CEREBRAL HEMISPHERS___(1)____,
the other major subdivisions of the brain are the _BRAIN_(2)___ and the _STEM_(3)__.
the cavities found in the brain are called VENTRICLES__(4)__.
they contain _CEREBOSPINAL FLUID_(5)_(CSF.)_.
The largest part of the human brain is the cerebrum. Another major subdivision of the brain are the cerebellum and brainstem. The cavities found in the brain are called ventricles. They contain cerebrospinal fluid.
What are the different parts of the brain?
The brain is divided into the forebrain, midbrain, and hindbrain. The forebrain is the anterior part that consists of the olfactory lobe, cerebrum, and diencephalon. Most of the space is occupied by the cerebrum.
The midbrain consists of centers for vision and hearing. The hindbrain consists of the cerebellum, medulla oblongata, and pons varolii. Cerebrospinal fluid is filled inside the cavities of the brain.
Hence, the largest part is the cerebrum, and the two major subdivisions are the cerebellum and the brainstem. Cerebrospinal fluid is present inside the ventricles of brain. This fluid protects the brain from injuries.
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Pepsin, an enzyme found in the stomach, acts best at a ph of about 2, but it is not active at a ph of 7. why
Mammals digest food with aspartic protease pepsin. Pepsin works best at a pH of roughly 2, while neutral pH denatures the protein.
What is pepsin?Pepsin is an enzyme that is produced in the stomach and is responsible for the digestion of proteins that are found in the food that is consumed. Pepsin is initially produced in the stomach as an inactive zymogen termed pepsinogen by the chief cells of the stomach. The parietal cells of the stomach lining are responsible for the secretion of hydrochloric acid, which brings the pH of the stomach down. Pepsin needs a low pH (between 1.5 and 2) in order to be active.
After passing through the duodenum and into the small intestine, the pH goes through a significant shift, becoming more neutral at a range of 6-7. The pepsin enzymes will eventually stop working properly because they will lose their enzymatic activity. At higher pH levels, the enzyme is unable to fold into its proper conformation, which is why this happens.
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Which marine pairings typically exhibits mutualism?
Barnacles/mussels
Clownfish/anemone
Shark/sea lion
Tapeworm/manatee
What are the products of linear electron flow during the light reactions of photosynthesis? what are the products of linear electron flow during the light reactions of photosynthesis? heat and fluorescence adp and nadp+ atp and nadph atp and p700?
Answer:
The products of linear electron flow during the light reactions of photosynthesis are ATP and NADPH.
Explanation:
During the light reaction of photosynthesis, the electron is released from the lysis of water. The product of water lysis are [tex]\rm \bold O_2[/tex], [tex]\rm\bold H^+[/tex] and electrons.
These electrons flow through several proteins. The energy of this electron flow is used to move hydrogen and the production of NADPH. NADH and ADP are reactants in the light reaction of photosynthesis.The hydrogen movement results in a concentration gradient. This is used to produce some ATP.[tex]\rm \bold {P_7_0_0}[/tex] is the reaction center where the reaction occurs.It is the process where light energy is converted to chemical energy. Hence there will be no heat or fluorescence.
Therefore from the above discussion, we can conclude that the products of linear electron flow during the light reactions of photosynthesis are ATP and NADPH.
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2) explain the properties of water that allow an insect to walk on water
3) when a lake freezes,how does the density of water prevent all of the living organisms in the lake from freezing as well ?
Which of the following correctly identifies the dominant stage in the fern life cycle represented by the frond?
one correctly describes reproduction and life cycle of fern is Spore → Gamete → Prothallus → Sporophyte
The correct option is (A).
Option A correctly describes the reproduction and life cycle of a fern. Here's a detailed explanation:
1. Spore Formation: The life cycle of a fern begins with the formation of spores. Spores are reproductive structures produced by the sporangia located on the undersides of fern leaves called fronds. These spores are haploid, meaning they contain half the number of chromosomes compared to the parent plant.
2. Gamete Formation: Spores germinate and develop into gametophytes, specifically a small, heart-shaped structure called a prothallus. The prothallus produces both male and female gametes through mitosis. These gametes are haploid as well.
3. Fertilization: Male gametes (sperm) swim to female gametes (eggs) on the prothallus and fertilization occurs, forming a diploid zygote.
4. Sporophyte Formation: The zygote develops into a new sporophyte, which is the familiar fern plant that we recognize. The sporophyte grows and develops, producing fronds and eventually sporangia.
5. Spore Production (Again): Sporangia develop on the undersides of mature fronds of the sporophyte. Inside the sporangia, diploid cells undergo meiosis to produce haploid spores, completing the life cycle of the fern.
Option A follows the correct sequence of events in the fern life cycle, starting from spore formation, through gamete production and fertilization, to the formation of the sporophyte, which eventually produces spores again. Therefore, option A correctly describes the reproduction and life cycle of a fern.
complete question given below:
Which one correctly describes reproduction and life cycle of fern?
A Spore → Gamete → Prothallus → Sporophyte
B Gamete Spore Prothallus → Plant
C Prothallus → Sporophyte → Gamete → Fern
D Sporangia Spore → Prothallus → Sporophyte → Plant
True or false? the driving force for the unloading of oxygen from hemoglobin into tissues is the difference in pco2 levels between the blood and body tissues. view available hint(s) true or false? the driving force for the unloading of oxygen from hemoglobin into tissues is the difference in pco2 levels between the blood and body tissues.
a. True
b. False
The primary driving force for the unloading of oxygen from haemoglobin into tissues is the difference in oxygen concentrations and other factors, not the PCO₂ levels. PCO₂ does affect the oxygen-carrying capacity, but it is not the main factor.
Explanation:The statement is false. The primary driving force for the unloading of oxygen from haemoglobin into tissues is actually the difference in oxygen concentration, not PCO₂ levels. This process is primarily governed by the partial pressure of oxygen (PO₂), temperature, pH, and the concentration of 2,3-bisphosphoglycerate (2,3-BPG).
Higher PO₂ in the lungs promotes oxygen loading onto haemoglobin, while lower PO₂ in the tissues promotes oxygen unloading. Although PCO₂ can affect haemoglobin's oxygen-carrying capacity - causing the 'Bohr effect' - it is not the main driver for the mentioned process.
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Scientists have learned a great deal from studying and using stem cells. Which diseases/disorders are not involved in stem cell research?
A)
cancer
B)
diabetes
Eliminate
C)
bird flu
D)
spinal cord injuries
the answer is c) bird flu
Organisms that grow best under elevated pressure like you would find in the deep ocean are ________
The answer is extreme piezophile. This organism cannot grow at the pressure hydrostatic of 1 atm. And this piezohilic requires pressure hundredth of atmosphere for growth. The counterpart of piezophile is oligotrophy this organism grows only in the best place with a very low levels of nutrients.
Which part of the conduction system initiates the depolarizing impulse, which spreads throughout the heart? view available hint(s) which part of the conduction system initiates the depolarizing impulse, which spreads throughout the heart? sa node av bundle (bundle of his) av node purkinje fibers?
Answer:
Option). SA node.
Explanation:
SA node or sinoatrial node is a cluster of cells, present in right atrium wall of heart. Cells of SA node have ability to produce spontaneous depolarizing impulse. Hence, it is also known as 'pacemaker of heart.'
Due to this, action potential of heart is initiated that pass throughout the heart and leads to contraction. Thus, the correct answer is option). SA node.
if a human egg recieves 2 copies of a chromosome and is fertilized, how many copies of the chromosme would there be in the resulting embryo
When prokaryotic cells copy their dna, replication begins at?
DNA replication in prokaryotic cells begins at the origin of replication and proceeds in both directions. This process is part of Binary Fission, a common cell replication method in prokaryotes.
Explanation:When prokaryotic cells copy their DNA, replication begins at a specific point known as the origin of replication. This is the point where the DNA molecule opens up to allow replication machinery to attach and begin synthesis. The process is carried out in both directions concurrently. This process is a part of Binary Fission, the most common mechanism of cell replication in prokaryotes. Understanding this replication process requires deeper knowledge of a cell's genetic material. In prokaryotes, the genome is composed of a single, circular double-stranded DNA molecule. The region containing this genetic material is called a nucleoid.
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A mummy is discovered whose tomb includes cloth, food, and other organic remains. what dating method would most likely be used to date the tomb?
which protist is the most widely known form of making plankton and is thought to have given rise to plants?
The protist known for forming plankton with a connection to the rise of plants is algae. Algae are autotrophic, perform photosynthesis, and vary from unicellular diatoms to multicellular seaweed and kelp.
Explanation:The protist that is most widely recognized for its role in forming plankton and is believed to have given rise to plants is a type of algae. Algae are plant-like protists that can be either unicellular, like diatoms, or multicellular, such as seaweed. These organisms are essential components of aquatic ecosystems and play a vital role in the food chain. They are autotrophs, meaning they produce their own food through the process of photosynthesis, using sunlight to convert carbon dioxide and water into sugars, much like land plants do. However, unlike land plants, algae don't have true stems, roots, or leaves.
Among the various types of algae, the chlorophytes (green algae) have been significant in the evolution of plants. Chlorophytes are diverse and primarily inhabit freshwater environments and plankton. They can range from simple, unicellular forms like Chlamydomonas, which has a pear-shaped morphology with flagella for movement, to the complex multicellular forms such as seaweed and kelp that form vast underwater 'forests'.
Please answer will give Brainlyist! What causes the temperatures in the lower troposphere to be warmer?
The most important energy supply molecule for all living things is ___
The sun is the ultimate source of energy in any ecosystem. Solar energy is captured by plants to produce food in the process of photosynthesis. During photosynthesis carbon dioxide and water using solar energy is converted into to glucose and oxygen. In glucose molecules energy is stored to carry out life processes of plants.
Other organisms, in turn, feed on plants and break down glucose molecules in the process of cellular respiration to release energy. The released energy is utilized by the cells to synthesize a chemical molecule, Adenosine triphosphate (ATP). ATP is the energy currency for cells. ATP supply energy for all the metabolic activities of organisms.
Consider a situation in which overharvesting causes the number of fish in a population to become drastically smaller, which causes genetic variation in that fish population to decrease over a few generations. this is an example of
The drastic change in numbers is an example of the bottleneck effect. This is a mechanism of genetic drift.
What is genetic drift?
It is a process in which the frequencies of alleles change in a population. In a population, dominant, recessive, and heterozygous genotypes are present. When allelic frequencies change, there are changes seen in those genotypes.
Two types of genetic drift are seen, such as the founder effect and the bottleneck effect. In the founder effect, a smaller group of organisms separates to form a new population.
The bottleneck effect is explained by taking the bottle into consideration. When the bottle filled with genotype is inverted, a few will come out and survive while most remain in the bottle and die. This is seen in natural disasters, overfishing, etc., and in a short time period, the population declines.
Hence, this is an example of the bottleneck effect.
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Cellular respiration and fermentation both
a.) begin with the breakdown of glucose in glycolysis
b.) produce the same number of ATP molecules
c.) only occur in animal cells
d.) require oxygen molecules as a reactant
Final answer:
Both cellular respiration and fermentation begin with the breakdown of glucose in glycolysis (option a). Fermentation produces less ATP compared to cellular respiration and doesn't require oxygen, unlike aerobic cellular respiration.
Explanation:
The question seeking to differentiate between cellular respiration and fermentation asks which statement is true for both processes. The correct answer is a.) begin with the breakdown of glucose in glycolysis. Glycolysis is a series of reactions that break down glucose into pyruvate and produce ATP and NADH and happens in both cellular respiration and fermentation. It is the only option that correctly applies to both cellular respiration and fermentation.
Contrary to some options provided, fermentation does not produce the same number of ATP molecules as cellular respiration; it produces fewer. Fermentation and cellular respiration do not only occur in animal cells; they are also found in other organisms such as bacteria and plants. Lastly, fermentation does not require oxygen molecules as a reactant, whereas aerobic cellular respiration does.
What is that the _______ system helps to defend the body by producing hormones, including thymosin, which helps t-cells to mature, and adrenaline, which helps the body to fight or run away from large external threats?
The answer is Endocrine!!!!!!
Composting is the process of converting organic materials like plant material, food waste, and manure into humus. Humus is a soil-like material. There are many benefits that composting has for the environment. How does composting protect our ground water supply?
A) It prevents run off from occurring.
B) It reduces the need for artificial fertilizers.
C) It reduces the amount of methane that is produced.
Answer: It reduces the need for artificial fertilizer
Explanation:
Fertilizers can be defined as the substances that can be used to increase the productivity of the soil and more productive soil will yield more.
Fertilizers can be organic(natural) or man-made synthetic. Artificial fertilizers are not good for long run as it has negative impact on the plants and other components of life.
Natural fertilizers are formed when organic materials like dead plants, animals, food and animal waste are added to the soil. This is humus and is very good for the health of soil and has no side effects.
If humus will be added to the soil then there will be a significant decrease in the need of artificial fertilizer.
As the human population increases, which problem is technology least likely to be able to solve?
a lack of space in which to live
poor health conditions
dependence on nonrenewable resources
an inadequate food supply
The correct answer is:
A lack of space to live
The main function of the human respiratory system is to
Question 4 options:
A. Produce carbon dioxide as a waste product.
B. Obtain oxygen out of the atmosphere.
C. Remove nitrogenous waste from the blood
_____________ is a complex, branched storage form of glucose used for starch in the plant and is similar in structure to the storage form in the animal body known as __________
What components are involved in the process of cellular respiration
Cellular respiration refers to an array of reactions, which generates ATP. The process of cellular respiration utilizes glucose to generate the ATP that the body requires to do essential activities. Cellular respiration can be differentiated into three segments: glycolysis, the citric acid cycle and the electron transport chain.
The essential components involved in the process are glucose, ADP or adenosine diphosphate, NAD a coenzyme used in the oxidation-reduction reaction and the reducing agent NADH.
Final answer:
Cellular respiration is a vital metabolic process subdivided into three main stages: glycolysis, the Krebs cycle, and the electron transport chain, which together convert glucose into ATP, water, and carbon dioxide.
Explanation:
Cellular respiration is an essential metabolic process whereby cells convert the biochemical energy from nutrients into adenosine triphosphate (ATP), and release waste products. The reactions involved in cellular respiration are considered catabolic reactions, breaking down large molecules into smaller ones and releasing energy essential for cellular functions. The stages of cellular respiration are glycolysis, the Krebs cycle (citric acid cycle), and the electron transport chain (ETC).
Glycolysis: The initial stage occurs in the cytosol of the cell and does not require oxygen. During glycolysis, glucose is broken down into pyruvate, yielding 2 ATP molecules and 2 NADH molecules.Krebs Cycle: This second stage occurs within the mitochondria, requiring oxygen. It further breaks down the products of glycolysis to produce carbon dioxide, ATP, NADH, and FADH2.Electron Transport Chain: The final stage, also in the mitochondria, where NADH and FADH2 oxidation occurs, results in a large amount of ATP and water as the by-products.The equation for cellular respiration, C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP, summarizes the overall process with glucose and oxygen as reactants and ATP as the main product, alongside water and carbon dioxide as waste products.
View Lab Which of the following statements is FALSE? Air temperatures over the ocean remain fairly constant throughout a 24-hour cycle. Air temperatures over the land can vary significantly throughout the day. Air temperatures over land reach their highest values in the mid-afternoon. Air temperatures over land are always
Final answer:
Air temperatures over the ocean remain fairly constant throughout a 24-hour cycle, while air temperatures over land can vary significantly throughout the day and reach their highest values in the mid-afternoon.
Explanation:
The statement that is FALSE is: Air temperatures over land are always
Air temperatures over the ocean remain fairly constant throughout a 24-hour cycle. On the other hand, air temperatures over land can vary significantly throughout the day.
They reach their highest values in the mid-afternoon due to the fact that land absorbs and loses heat more quickly than water. This causes the land to heat up more rapidly and reach its peak temperature in the afternoon.
Why is the menstrual cycle an important adaptation for reproduction in humans?
Which statements describe the synapse? Select all that apply.
*It carries information through electrical impulses to the cell body.
*It is part of the neuron.
*It ensures that information travels in one direction only.
*It carries information through chemical impulses to the cell body.
*It is the gap between neurons.
*It ensures that information travels in multiple directions.
Answer:
1 , 3 , 5 on edge !
Explanation:
please help ASAP and no guesing thats so rude
The chart shows four environments and the kind of succession that would occur there.
In which row is the kind of succession incorrectly listed?
row 1
row 2
row 3
row 4
Answer: Row 1
Explanation: The primary succession can be defined as the growth of the plant species for the first time on the the substrate such as rock, lava, mountains. Basically it takes place on the substrates other than the soil.
In primary succession the pioneer species are lichen, algae and fungi that first normalizes the habitat for the growth of the plants.
Secondary succession takes place on the places which is destructed due to natural disaster or human activities.
So, row 1 shows secondary succession not primary succession.
Answer:
Row number one
Explanation:
is the correct answer