1. An electron carrier transports electrons and their energy to another molecule.
2. The equation of photosynthesis is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
3. In the stroma NADPH and ATP combine with carbon dioxide to produce sugars.
4. In the thylakoid membrane, light energy from the sun splits water and generates ATP and NADPH.
5. Chloroplasts are not found in heterotrophic cells.
6. Autotrophs need light to carry out photosynthesis.
Why are the answers correct?
An electron carrier is an important molecule involved in cellular respiration as it transports electrons, along with their energy, to another molecule.
Photosynthesis is the process by which plants and organisms such as algae use energy from the sun to convert water, and carbon dioxide to produce oxygen and sugar.
The stroma uses ATP and NADPH in the next stage of photosynthesis to produce three-carbon sugars.
The thylakoid membrane contains chlorophyll and is located in the stroma where the light energy from the sun splits water and generates ATP and NADPH.
In summary, chloroplasts are organelles found in the cells of autotrophs and not heterotrophs.
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Marine science The exosphere is about halfway to the moon, true or false
reduced bone and muscle mass and light- producing organs are adaptations most likely to be seen in fish living in the:
Reduced bone mass as well as muscle and light-producing organs are the most likely adaptations seen in fish living in the deep sea.
Deep-sea fish is a collective term for fish that live in the dark below the surface of sunlit waters, that is, below the epipelagic or photic zone in the oceans. By far the lantern fish are the most abundant deep-sea fish. Other marine fish include flashlightfish, cutting sharks, bristlemouth, anglerfish, viperfish, and several species of eelpout.
Organs that emit weak blue, yellow, or green light can be used to communicate. Lanternfish are very important to marine ecosystems, with whales, dolphins, and sharks too.
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if your skin and the whites of your eyes appear yellow, what is not being excreted? group of answer choices globin chains biocarbonate ion carbon dioxide heme carbonic acid
Heme group is not being excreted. This is the reason for skin and white of eyes to turn yellow.
In vitro and in vivo, TinIV-protoporphyrin IX (Sn-protoporphyrin) potently inhibits heme breakdown to bilirubin. In experimental animals, including primates, it totally controls neonatal hyperbilirubinemia. Additionally, it lowers plasma bilirubin levels in several types of induced or naturally occurring jaundice in both humans and animals.
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Plants that reproduce sexually generate seeds. These seeds are often dispersed away from the parent, either through wind, animals, or water. Look at the seed shown in this image of bullrush plants. What form of dispersal do you think it uses, and why?
Wind dispersal is the process through which winds act as dispersal agents, transporting seeds far from the parental plants. In the exposed example, eolic dispersion is used by this plant species to transport seeds.
What is wind seed dispersal?
Wind dispersal refers to the transport of seeds from the parental plant to other places far away from it by the action of winds.
Winds distribute seeds in different directions and varying distances from the parental plant, which makes them good species dispersal agents.
Some plant species adapted to this agent and developed seed structures that make them more suitable for being transported further and better by winds.
Some adaptations are, for instance,
Light seedsDry seedsThey have structures like feathers, hair, wings, and others.
When we look at the image, we can see bunches of seeds attached to the top of tall sticks.
Plants develop these long sticks to expose seeds to the wind. The longer the stick is, the more exposed sees are.
We can also see that seeds have hair-like structures, which facilitate their release and transport whenever winds blow.
The form of dispersal this plant species uses is wind dispersal. We can tell this because of the long sticks to which seeds are attached and seeds with hair-like structures.
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following right parotid gland surgery to remove a tumor, a 45-year-old woman found that saliva was constantly dripping from the right margin of her mouth. the surgery apparently damaged which nerve?
It appears that the surgery injured the facial nerve's marginal mandibular branch.
Why undergo surgery?In order to diagnose or cure a pathological condition like a sickness or injury, to aid improve body function or appearance, or to mend unwelcome ruptured areas, surgeons use operative manual and instrumental procedures on patients.
What distinguishes a surgery from an operation?Surgery (say: SUR-juh-ree) is performed in a hospital's operating room, often known as the OR or the surgery center. An operation is a different term for having surgery. During surgery, a specialized medical professional known as a surgeon (pronounce: SUR-jun) performs procedures on or within the body to correct any problems.
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speciation is the divergence of two populations from a common ancestor. how does it contribute to biological diversity?
The diversity we observe today is the result of new adaptations emerging in the survivors of the extinction. The separation of two populations from a common ancestor is known as speciation. Biodiversity is increased by speciation.
Diversity is increased by speciation. The diversity of organisms within an ecosystem is known as biodiversity. It boosts biodiversity because speciation leads to the creation of new species.
The amount of biological diversity is directly inversely correlated with the pace of speciation. This implies that the diversity of a species will increase as speciation increases. Understanding the evolutionary tendency of any species and re-establishing the different bio-diversities already present on earth are both made possible by speciation.
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Rank the strength of attraction between the particles that make up the gas in an oxygen tank, a rock, and juice, all at room temperature.
Answer:
rock, juice oxygen
Explanation:
Going by solid, liquid, and gas, there has to be the most attraction between solid substances.
evolutionary roots of aerobic respiration: each of you will describe your process across evolution. a.)first appearance on earth. a.what are it inputs and where do they come from? b.what are its outputs and where do they go? c.what is its most important output? b.)describe each and every subsequent different function of your process across evolutionary time since its inception up to its role in aerobic metabolism. as in part (a), you will need to specify inputs and where from, outputs and where they go, and the most important output. bring notes to the group meeting about how your process is connected to the electron transport chain in modern aerobic metabolism. what materials does your process receive and send to the electron transport chain, and what does this exchange accomplish?
When oxygen first appeared on Earth 2.3 billion years ago as a result of oxygenic photosynthesis in cyanobacteria, it fundamentally changed the trajectory of evolution by enabling the emergence of aerobic respiration and complex multicellular life.
The energy that was stored in carbohydrates and lipids during photosynthesis is released during the process of aerobic respiration and made available to living things. Glycolysis, the link reaction, the Krebs cycle, and oxidative phosphorylation are the four phases.
The development and diversification of the first animals depended heavily on the biological toolkits for aerobic respiration. Isocitrate dehydrogenase (IDH), an enzyme, controls the Krebs' Cycle, a process by which organic molecules are oxidized to produce ATP in aerobic life forms.
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I really need help with this.
Select all the correct answers.
What happens to water when it changes to ice?
Its density increases.
Its density decreases.
Its mass increases.
Its mass decreases.
Its volume increases.
Its volume decreases.
When water solidifies to ice its volume increases keeping the mass same and therefore the density decreases.
What is solidification process?
Atoms are transformed from a liquid, disordered state through the process of solidification into an ordered solid state. By adhering to the kinetic principles, the conversion rate for the solidification process can be attained.The unique structure of a water molecule is made up of one oxygen atom and two hydrogen atoms. The peculiar arrangement of these atoms gives water certain unusual features, including its high thermal conductivity, surface tension, adhesion, and cohesion.When water freezes, the molecules get organized into a crystalline structure and take on a certain shape. Since there are spaces between individual molecules in this less dense crystalline structure, water expands as the volume of the structure as a whole rises.Ice forms as water expands, and because volume is inversely proportional to density, ice is less dense than water. This is the reason why ice, which feels heavier in its solid state than in its liquid one, floats on water.
Thus when water changes to ice its volume increases and density decreases.
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a researcher performs fish with a probe against a known chromosome 3 sequence on cells with a small deletion on the p arm of chromosome 3. if two fluorescent spots are observed in each cell, what is the most likely explanation? multiple choice
A researcher performs FISH with a probe against a known chromosome 3 sequence on cells with a small deletion on the p arm of chromosome 3. The most likely explanation when two fluorescent spots appear is: the sequence targeted by the probe is not within the deleted region.
What is FISH?In genetic testing, FISH stands for Fluorescence in Situ Hybridisation. This is a test that looks for specific gene changes in cells. By doing FISH, we could look for specific parts of genes to detect genetic mutations and understand a variety of chromosomal abnormalities. If two fluorescent spots appear, it is most likely the sequence targeted is not within the deleted region.
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hat is the function of major histocompatibility complex (mhc) proteins? they promote phagocytosis by binding to antigens. they facilitate antigen recognition by t cell receptors. they stimulate cell division. they trigger endocytosis of the antigen.
The purpose of MHC molecules is to bind and display pathogen-derived peptide fragments on the cell surface so that the relevant T lymphocytes can recognise them.
What are MHC proteins, or major histocompatibility complex proteins?MHC, or the major histocompatibility complex, is a set of genes that produce proteins located on the cell surfaces and that aid the immune system in identifying foreign objects. In all higher vertebrates, MHC proteins are present. The complex in humans is also known as the HLA (human leukocyte antigen) system.
What exactly are MHC proteins, and why are they crucial?The major histocompatibility complex (MHC) is a collection of genes that code for cell surface proteins that play a significant part in the immune response. MHC molecules have a major role in how they display antigens.
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A student records the amount of time it takes mice to run
through a maze.
Which two terms describe this type of data?
A. Continuous
B. Quantitative
C. Qualitative
D. Discrete
Quantitative and Discrete are the two terms that describe this type of data.
Data are a group of discrete values that describe an amount, quality, fact, statistics, or other fundamental units of meaning, or they can simply be a series of symbols that can be further understood. A datum is a specific value contained in a group of data.
Quantitative data is information that is numerical, whereas qualitative data is information that is descriptive (it describes something) (numbers).
Discrete or continuous quantitative data are both possible. While continuous data can take any value, discrete data can only take specific values (such as whole integers) (within a range).
Text, observations, numbers, graphs, figures, pictures, and symbols are all examples of data. Data may consist of specific costs, weights, addresses, names, ages, temperatures, dates, or distances, for instance.
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Which blood vessels are responsible for bringing deoxygenated blood to the heart?.
Pulmonary Artery is responsible for bringing deoxygenated blood to the heart.
Pulmonary Artery Characteristics
- One of the 3 main blood vessels of the body.
- Out of the right ventricle into the 2 bronchi.
- In the form of a tube sleeve that resembles the letter "T".
- The veins are 1.2 inches wide and 2 inches long.
- Has a valve in the right ventricle of the heart.
- Thick-walled, elastic, and muscular.
- Carries carbon dioxide-rich blood (de-oxygenated blood) from the heart to the lungs.
Pulmonary Artery Function
The pulmonary artery is the only artery in the body that carries de-oxygenated blood. The other arteries carry oxygen-rich blood.
The valves in the ventricles act as one-way doors, through which blood can leave the heart but cannot return to the heart.
The right and left pulmonary arteries are responsible for carrying carbon dioxide-rich blood to the two lung bronchi. In the lungs, gas exchange will occur.
Carbon dioxide gas that is no longer needed in the blood will be replaced with oxygen gas that the body needs.
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Some insects can walk on the surface of water. Their feet push against the surface of the water and the water surface bends down under their weight but does not break. What do the individual water molecules do that makes this possible?
Answer:it is surface tension
Explanation:
which is more medial, the cisterna chyli or the spleen?? bboldiitalicsuunderlinebulleted listnumbered listsuperscriptsubscript
The spleen is more medial to the spinal cord than the cisterna chyli. The spleen is part of the lymphatic system
The spleen is the largest organ in lymphatic system, which is an extensive drainage network. The work of the lymphatic system is to balance and level the body fluids and to safe guard the body against contaminations. It consist of a network of lymphatic vessels that take the lymph — a clear, watery fluid that contains minerals such as proteins — throughout the body.
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At what point on a roller coaster is the gravitational potential energy (GPE) the highest?
A- at the top of the highest drop
B-at the lowest point of the roller coaster
C-at the top of the second hill
D- when the coaster stops
Answer:
A at the top
I got this correct on my test
A boy and a dad get into a car accident. The dad did not make it, but the boy did. The boy went to the hospital, and the doctor said I couldn't. He is my son. Who is the doctor?
Answer:
the doctor is the mother of the boy
which of the following is incorrect concerning carbohydrate absorption? multiple choice end products of carbohydrate digestion are transported through the portal vein to the liver. disaccharides are digested to monosaccharides by enzymes that are attached to intestinal cells. maltose is transported through the portal vein to the liver. monosaccharides can enter the villi.
In relation with carbohydrate absorption the correct statement is- maltose is transported through the portal vein to the liver.
The correct option is c.
Complex carbohydrates are first broken down into oligosaccharides by stomach and salivary enzymes, which are subsequently hydrolyzed to monosaccharides by particular disaccharidases situated at the enterocyte brush boundary.
The small intestine is where carbohydrates are chemically broken down instead of the stomach. The disaccharidases and pancreatic amylase complete the chemical cleavage of digestible carbs. The liver receives the monosaccharides once they are absorbed into the circulation.
Dietary lactose, sucrose, and maltose—all of which are sugars—diffuse in the small intestinal lumen and come into contact with the absorptive epithelial cells that line the villi. There, they interact with brush border hydrolases, which break down the sugars into two molecules of glucose by the enzyme maltase.
The complete question is:
Which of the following is incorrect concerning carbohydrate absorption? multiple choice
a. end products of carbohydrate digestion are transported through the portal vein to the liver.
b. disaccharides are digested to monosaccharides by enzymes that are attached to intestinal cells.
c. maltose is transported through the portal vein to the liver.
d. monosaccharides can enter the villi.
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what structure is indicated by the arrow? epithelial cell junctions what structure is indicated by the arrow? epithelial cell junctions spot desmosome hemidesmosome tight junction gap junctions
The arrow points to the spot desmosome structure. The anchoring junctions known as maculae adhaerentes on the spot desmosomes are connected to intermediate filaments.
Where may one find spot desmosomes?Spot desmosomes are seen in great concentrations in between spine-like process connections of said epithelial cells and beneath belt desmosomes throughout junctional complexes in stratified squamous epithelia.
What are desmosomes and what do they do?Desmosomes are important intercellular sticky junctions seen in other tissues and in the basolateral membranes of vascular endothelium. They facilitate direct cell-cell interactions and offer intermediate filament anchoring sites that are crucial for the preservation of tissue architecture.
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a bacterial broth culture grown in isolation (pure culture) reflects a predictable growth profile. list the four principle phases of a typical growth profile and briefly describe: (a) what is happening during each phase with regard to the viable cell count and (b) what is causing the change to occur
The four-phase of bacterial culture growth are the lag phase, log phase, stationary phase, and death phase.
Lag Phase: Cellular activity, but not growth, characterizes this initial phase. During this phase, these cells enlarge but do not divide.
Exponential (Log) Phase: Bacterial cells move into the exponential or log phase after the lag phase. The cells are currently dividing by binary fission and multiplying by two after each generation. As DNA, RNA, cell wall components, and other components required for growth are produced for division, metabolic activity is high.
Stationary Phase: As the nutrients get depleted and waste products start to build up, the population expansion seen in the log phase eventually starts to slow down. The number of dividing cells equals the number of dying cells at the stationary phase of bacterial cell development. There is no overall population growth as a result.
Death Phase: As nutrients become scarcer and waste products multiply, more cells are undergoing cellular death.
Factors like oxygen, pH, temperature, and light impact microbial growth.
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what are the components of water potential, and why is water potential important for the movement of water in plants?
Components : pressure and solute potential.
Importance :
1) Ensures water moves into plant root
2) Helps movement of water within a plant
3) Factor involved in transpiration
4) Cell wall allows for increased pressure
5) Pressure counteracts osmolarity
Water potential is the energy required, consistent with quantity of water, to transport an infinitesimal amount of water from the pattern to a reference pool of natural loose water. To recognize what meaning, examine the water in a soil sample to water in a drinking glass.
Osmoregulation refers back to the manage of water capability of the blood. The blood is complicated, it has these kind of ions and proteins and stuff. Cells use various things up all of the time and a few more frequently than others at one-of-a-kind instances, night, day, sweat, tears, and many others.
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Antivirus software prevents infection by recording key attributes about your files and checking to see if they change over time in a process called?.
Primary productivity is an indicator of how much matter and energy is
available in the producers within a given area. With a partner, discuss the patterns
you see in the map. Why do you think primary productivity is important for the
health of an ecosystem?
The rate at which energy is added to the bodies of a group of animals, known as primary producers, in the form of biomass, is referred to as primary productivity.
What is measured by the main productivity?By monitoring the output of oxygen or the intake of carbon dioxide, primary productivity is typically calculated. The standard unit of measurement for production rates is grams of organic carbon per unit area per unit time.
What is energy used in primary production?Any extraction of energy products in a usable form from natural sources is considered primary energy production. This happens either during the extraction of natural resources (for instance, in coal mines, crude oil fields, or hydroelectric power plants) or during the production of biofuels.
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Compared to human cells, there are about _______ bacterial and archaeal cells inhabiting our bodies.
Compared to human cells, there are about 10 to 100 times as many bacterial and archaeal cells inhabiting our bodies.
Bacteria and archea, both, are unicellular, prokaryotic organisms. They are this very simple organisms consisting of only one cell. On the contrary, human is a complex organism that has millions of cells in his body. Therefore, we can say that our bodies contain between 10 and 100 times more bacterial and archaeal cells than human cells.
Cells make up organisms, which are highly organised structures. It's amazing how intricate even extremely basic, single-celled organisms are. Molecules are made up of atoms inside each cell. Organelles or cell components are created from these. In comparison to single-celled animals, multicellular organisms, have an advantage since their cells can be specialised to fulfil particular functions and even sacrificed in some circumstances for the benefit of the organism as a whole.
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What is composed of cells that produce hormones and secrete them into the bloodstream?.
Answer:
Endocrine glands are composed of cells that produce hormones and secrete them into the bloodstream.
Explanation:
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someone please solve this how doi find the mean mass
The mean mass of a single primary consumer is 1.67 * 10⁻⁴ g.
What is the mean mass of a single primary consumer?A primary consumer is a consumer that depends primarily on the producer for its nutrition.
The mean mass of a single primary consumer is obtained using the formula below:
Mean mass of a single primary consumer = total biomass in g per m² / number of individuals per m²The total biomass in g per m² = 2.5
The number of individuals per m² = 1.5 * 10⁴
Mean mass = 2.5 / 1.5 * 10⁴
mean mass = 1.67 * 10⁻⁴ g
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upus is an autoimmune disorder. which of the qualities would you expect to be a symptom of lupus? b cells binding to antigens on host cells and targeting their degradation an increase in ciliary action of the esophagus increased blood clotting if the skin is cut increased phagocytosis of bacterial pathogens in the body
Systemic lupus erythematosus, sometimes known as lupus, is an autoimmune disorder that may result in organ damage, fever, skin rashes, and joint pain. Most often, lupus affects females between the ages of 15 and 45.
What signs and symptoms might a lady have of lupus?Fatigue, hair loss, sun sensitivity, painful and swollen joints, an inexplicable fever, skin rashes, and renal issues are typical symptoms. For SLE, there isn't a single test. Typically, your doctor may inquire about your symptoms, family history, and personal health history. Additionally, your doctor will do a few laboratory tests.
What happens if lupus is not treated?It can increase your risk of acquiring life-threatening conditions including a heart attack or stroke if left untreated. Frequently, lupus There are no outward signs of nephritis. This does not imply that the condition is risk-free, though, as the kidneys may still be suffering harm.
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portion of an rna molecule that codes for making a protein
Answer:
mRNA
Explanation:
The messenger RNA carries the information for making a protein
in what direction do protons flow during chemiosmosis in chloroplasts? group of answer choices from the matrix into the stroma from the stroma into the cytosol from the thylakoid space to into the stroma from the intermembrane space into the stroma from the stroma into the thylakoid space
Direction in which protons flow during chemiosmosis in chloroplasts are : from the stroma into the thylakoid space.
Where do protons flow during chemiosmosis in chloroplasts?The chemiosmotic process in chloroplasts occurs during photosynthesis. The energy of electron is used to pump proton from stroma into the thylakoid lumen and when protons move back to stroma then they pass through ATP synthase.
The process of moving ions to the other side of a biological membrane is known as chemiosmosis.
Electrochemical gradient is generated in chemiosmosis which is used to drive ATP synthesis. During this process, hydrogen ions get collected in the thylakoid membranes.
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