Explanation: Diffusion is the movement of particles from a high to a lower concentration. Osmosis is the diffusion of water molecules down a concentration gradient through a semi-permeable membrane. Active transport moves particles from low to higher concentrations, while diffusion moves them across a membrane.
Which of the following plant pigments would absorb light at 440 nm? Check all that apply.chlorophyll abeta carotene
The energy from wavelengths of 440 nm is heavily absorbed by chlorophyll b. B. Green helps with light absorption during photosynthesis.
Which 4 different plant pigments are there?Chlorophylls, anthocyanins, carotenoids, and betalains are the four major divisions of plant pigments. The majority of plant colors that are derived naturally come from them.
Carotene absorbs light, right?Carotenoids are pigments that are both common and necessary for photosynthesis. The wavelength range of light that can drive photosynthesis is increased by their absorption in the blue-green area of the solar spectrum and transmission of the absorbed energy to (bacterio-)chlorophylls.
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hich of the following represents a dna vaccine? a. attenuated measles virus b. a plasmid containing genes for influenza type a protein c. hepatitis b antigen produced in yeast cells d. tetanus toxoid
Answer: b
Explanation:
tendons join muscle to bone. they are subject to severe stressors which usually only occur in one direction, the direction of muscle pull. for this reason, they are made up of:
Muscles and bones are connected by fibrous connective tissue called tendons. Tendons move bones and structures.
What are tendons?The fibrous connective tissue known as a tendon is what anchors muscle to bone in the body. It's also possible for tendons to connect muscles to other structures, such the eyeball. The function of a tendon is to allow the bone or structure to move. The collagen strands that make up fibrous connective tissue are bundled together in parallel fashion.
At one end, the tendon is securely linked to the muscle fibers, and at the other end, it is firmly coupled to the components of the bone. Tendons are responsible for transmitting the mechanical force of muscular contraction to the bones.
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What is the original source of energy in the food you eat?
O plants
O photosynthesis
O sugar
Osun
Answer:
D
Explanation:
Iirc
Answer: The correct answer to that is THE SUN. The sun is the main energy source that gives off energy to plants and other organisms as it is well known it provides vitamin D.
Explanation: I hope this helps!!!!
What are two different forms of a single gene called?
A factors
B alleles
B traits
In ferns, some leaves are "fertile" in that they bear sporangia. What are the structures in gymnosperms that are analogous to a leaf and sporangia? select all that apply.
The structures in Gymnosperms that are comparable to leaves, as well as sporangia of ferns, are (C) cone scales and ovules, (D) cone scale and pollen-producing sporangia.
Sporangia are found in the form of clusters known as 'sori' in certain leaves of ferns.
The question is incomplete. The complete question is:-
In ferns, certain leaves are termed 'fertile' as they carry sporangia. Which structures in Gymnosperms are comparable to leaves as well as sporangia of ferns?
Choose from the options that are given below:-
(A) cones as well as seeds
(B) seed coat as well as embryo
(C) cone scales as well as ovules
(D) cone scale as well as pollen-producing sporangia
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how does one cell population, the pluripotential stem cells, give rise to all the different blood cells?
PPSC's have the potential to develop into any of the blood cells. They are self-perpetuating.
Pluripotent stem cells are cells capable of self-renewal by dividing and developing into the three main cell groups that make up the human body, including ectoderm and endoderm.
The skin and nervous system develop from the ectoderm.
Endoderm forms the digestive and respiratory tract, endocrine glands, liver and pancreas.
Self-perpetuating, the ability of something to continue to exist, is one of the main characteristics of life. The reproductive capacity of organisms leads to self-perpetuating of species, if not individuals. The population is self-sustaining and growing.
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c) Why is mouth to mouth method of artificial respiration so effective in stimulating victims to begin breathing on their own? (2 marks)
The mouth to mouth method of artificial respiration is so effective in stimulating victims to begin breathing on their own because it makes available residual oxygen from the rescuer to be used in the lungs of the patient.
What is artificial respiration?Artificial respiration is defined as the method of respiratory where by oxygen is being delivered to the lungs through a manipulative technique that is not natural.
There are different types of artificial respiration which includes the following;
Schaffer's Method.Sylvester's method.Mouth to mouth respiration. Artificial respiration machine. Artificial breathing devices.The mouth to mouth type of artificial respiration has been proven to be effective because it stimulates the patient and makes available residual oxygen from the rescuer to be used in the lungs of the patient.
To perform mouth to mouth respiration the following is carried out accordingly;
Take a normal breath, cover and seal their open mouth with yours, and blow into their mouth for about one second. Their chest should rise visibly when you breathe into their mouth, and sink again as soon as you move away.This should not take more that ten minutes to restore the normal breathing of the patient.Learn more about respiration here:
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13. Which statement is true?
A. Endotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature involuntarily.
B. Ectotherms can insulate (stop heat loss from) their bodies and can control their body temperature by choice.
Answer:
B?
Explanation:
Linked genes are always syntenic, and they are always located near or one another on a chromosome. When syntenic genes are so far apart on the chromosome that crossing over between them generates independent assortment of the alleles, the genes are not linked.
2) Genetic linkage leads to the production of a significantly greater number of gametes containing chromosomes with parental combinations of alleles than would be expected under assumptions of independent assortment and to a significantly smaller number of gametes containing chromosomes with alleles that are different from the parental combinations.
3) Crossing over is less likely to occur between linked genes that are close to one another than between genes that are farther apart on a chromosome.
Genetic Linkage observations
A potent method for identifying the chromosomal location for disease genes is genetic linkage analysis.Genes that are located physically close to one another on a chromosome continue to be connected.
By calculating the recombination frequency using information from genetic crosses, we may determine if and how closely two genes are connected. Making linkage maps, which display the arrangement and relative locations of the genes just on chromosome, requires finding the recombination frequencies for several gene pairs. On the same chromosome, linked genes are those that are situated adjacent to one another. They are typically inherited jointly (but not always). One lengthy strand of DNA, one chromosome, codes to hundreds or even thousands of distinct genes. Each gene does have a particular spot on each chromosome known as a locus. In terms of genetics and genomics, linkage describes how closely genes or even other DNA sequences are located to each other on the identical chromosome.
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many different hematopoietic cells bear fc receptors. what cell type does not have fc receptors?
T cells are the hematopoietic cells that do not express Fc receptors constitutively.
T cells are the type of lymphocytes that are produced in bone marrow but mature in thymus. They keep circulating inside the body until they encounter any foreign particles. They are of two types: T helper cells and Cytotoxic T cells. These cells express Fc receptors only during cell activation and never constitutively.
Fc receptors are proteins found on the surface of various immune cells like B cells, macrophages, dendritic cells, NK cells, etc. These receptors bind to the antibodies present that are attached to the foreign invaders and hence help in protecting the body.
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Autotrophs like plants make their own food using energy from this process is called.
Autotrophs like plants make their own food using energy from this process is called photosynthesis.
What is the name of the method through which plants produce food?Plants use sunlight, water, and carbon dioxide to produce oxygen and energy in the form of sugar in a process known as photosynthesis.
Autotrophs include algae, plants, certain bacteria, and fungus. Autotrophs are the food chain's producers since they make their own energy and nutrients. Like the majority of autotrophs, kelp produces energy through a process known as photosynthesis.
All ecosystems depend on autotrophs because only they can synthesise the organic molecules that all creatures require from inorganic substances. Photoautotrophs and chemoautotrophs are the two main categories of autotrophs.
Heterotrophs do devour autotrophs, but autotrophs do not consume heterotrophs.
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which of the following is the most accurate definition of perception? the processing of visual stimuli by the brain to give an accurate representation of the view of the world the conscious interpretation of the world around us the detection of the various energy forms in the environment by sensory receptors the detection of stimuli in the internal environment by visceral receptors the detection of stimuli in the external environment by sensory receptors
The best way to define perception is as our conscious interpretation of the world around us. Our ability to recognize and evaluate sensory data is known as perception.
How we react to information is also a part of perception. When we think of perception, we can picture a process where we take in sensory data from our surroundings and use it to interact with them. Various stimuli in our environment are constantly stimulating our sense organs. Our sense organs pick up on many of these stimuli, which are then transformed into sensations. Selecting, organizing, and interpreting stimuli are cognitive tasks that are part of perception.
We can therefore infer that the most accurate definition of perception is our conscious interpretation of the surroundings, which also includes our recognition and understanding of sensory data.
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an estimate of the amount of energy required to process the food an individual eats is known as the . multiple choice question. resting heart rate basal metabolic rate parabolic effect of nutrients thermic effect of food
An estimate of the amount of energy required to process the food an individual eats is known as the basal metabolic rate.
Energy is the basic requirement for all the living organisms to maintain their life and perform all the life processes. The most commonly used form of energy is ATP. The energy is synthesized within the body of the organism from the food it intakes.
Basal metabolic rate (BMR) is the amount of calories required by the body on daily basis. In humans, the range varies among males and females. For males, the normal range is around 7,100 kJ per day, while for women, it is around 5,900 kJ per day.
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At the end of the calvin cycle what molecules have the energy that originally came from.
At the end of the calvin cycle ATP and NADPH molecules have the energy that originally came from light.
What is ATP?
Adenosine triphosphate is the source of the energy that cells use and store. The nucleoside triphosphate structure of ATP is composed of an adenine-based nitrogenous base, ribose sugar.
ATP plays a critical role in the entry and exit of macromolecules like proteins and lipids from the cell. The energy liberated during ATP hydrolysis powers efficient transportation mechanisms that carry these particles across a gradient of concentration.
Therefore, At the end of the calvin cycle ATP and NADPH molecules have the energy that originally came from light.
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Why do bone cells muscle cells and skin cells look different?.
Answer: Bone cells, muscle cells, and skin cells look different
Explanation: because (C) different genes are active in each kind of cell. Every cell in the body has the same number and type of genes as every other cell.
Assume that all four H-R diagrams below represent a star in different stages of its life, after it starts to fuse hydrogen in its core. Rank the HR diagrams based on when each stage occurs, from first to last. View Available Hint(s) Reset Help 106 106 106 106 10- 10 103 10 luminosity (solar units) 1 luminosity (solar units) luminosity (solar units) 1 luminosity (solar units) 1 10 0-3 10-3 10-31 10-3 10-5 10-5 10-5 10-5 O O AFG A FG KM AFG spectral type AFG spectral type spectral type spectral type First stage Last stage
The correct sequence representing a star in different stages of its life, after it's starts to fuse hydrogen in its core is given below:
star in the sequencea little outsidemore outsidethen below the lineWhat is Star?A star is described as an astronomical object comprising a luminous spheroid of plasma held together by its gravity.
The stages in a Star's life cycle is shown below:
Giant Gas Cloud.Protostar.T-Tauri Phase.Main Sequence.Red Giant.The Fusion of Heavier Elements.Supernovae and Planetary NebulaeDuring the life cycle of a star, the star converts hydrogen atoms into helium over its course of life at its core. Eventually, the hydrogen fuel runs out, and the internal reaction stops.
If a star is big enough to fuse hydrogen atoms into helium, it will enter the phase that the Sun is in which is the main sequence phase.
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Cells remove waste from their cytoplasm by passing it through the cell membrane and out of the cell. What two human body systems perform similar functions?.
Answer:delete it
Explanation:just do it
prey species existing at very high densities, even temporarily, can benefit the prey as a result of:
Because of the satiation of the predator, prey species living in very high concentrations may occasionally be advantageous to them.
What is predator satiation?Predator satiation theory (Janzen, 1976; Silvertown, 1980; Augspurger, 1981) postulates that synchronous reproduction in long-lived species generates more seed than can be devoured by seed predators in mast years, starving them in non-seeding years.
A reproduction strategy in which a prey species creates many individuals in a group or cohort at a time that overwhelms the effect of individual predation by sating all predators and still having a sizable population remaining to maintain the species until the next reproduction event.
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The taiga is the most extensive biome, stretching west across north america and east to asia. The snowshoe rabbit is a common species found in the taiga biome. Over the last several decades, the average annual temperature of this area has increased, and the long-term deposits of ice and snow have become scarce. How will these abiotic factors impact the snowshoe rabbit population over time?.
The snowshoe rabbit will no longer be able to camouflage itself, thus resulting in a decline in its population due to death by predation.
What are abiotic factors?
Abiotic factors are nonliving components of an ecosystem, such as temperature, light, wind, and moisture. They are the physical and chemical elements of an environment that influence the structure and function of ecosystems. Abiotic factors shape the biotic, or living, components of an ecosystem, which include plants, animals, and microorganisms. Abiotic factors determine what species of life can live in a particular ecosystem. For example, a cold, wet climate will support different species of plants and animals than a hot, dry climate. Abiotic factors also determine the carrying capacity, or the number of organisms that can be supported, of a given environment. Abiotic factors are essential to the functioning of all ecosystems and are constantly changing due to natural processes and human activities.
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Recall that ecologists are biologists who specialize in the study of how species interact within a population. On this worksheet you will look at some of the things ecologists look at when they study populations. 1. What are some factors that you think ecologists might study when it comes to populations? _______________________________________________________________________. 2. What is growth rate (r)? _______________________________________________________________________. 3. Draw the shape of the graph that the population growth in Victorian England would have reflected:
Population size, density, factors affecting density, and dispersion. After subtracting deaths and births, the percentage growth is known as the net reproductive rate (r). 0.5%/year is the population reproduction rate.
what is The importance of density?We can calculate what materials will float and sink when placed in some kind of a liquid using the concept of density, which is a crucial idea. The rule of thumb is that objects will float as long as its density is lower than the liquid's density.
Definition and illustration of population density.The average of people in a population is expressed as the number of people per unit of area of volume. One bug per square meter, for instance, would be found in a population of 100 insects which occupy a space of 100 square meters.
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Doe A biophere conit of all the organim living in an area and the nonliving feature of their environment?
The biosphere is the skinny lifestyles-supporting stratum of Earth's surface, extending from some kilometers into the surroundings to the deep-sea vents of the sea. it's far composed of living organisms and nonliving factors from which the organisms derive electricity and nutrients.
The biosphere is made of the parts of Earth wherein existence exists all ecosystems. The biosphere extends from the deepest root systems of timber to the darkish environments of ocean trenches, to lush rain forests, high mountaintops, and transition zones like this one, in which ocean and terrestrial ecosystems meet.
A biosphere consists of all the organisms living in an area and all of the nonliving functions of their environment. Botanists are scientists who look at the interactions among organisms and their environments. populace density occurs whilst or greater organisms are trying to find an identical resource at an equal time.
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describe the difficulty encountered in the replication of the ends of linear dna, how this problem is solved, and its relationship with cancer and aging.
Cells struggle to duplicate the ends of linear chromosomes because they need a primer and to have directed polymerases.
Which cancers have a deadly prognosis?Short and sweet. Breast, lung & bronchus, prostate, or colorectal cancer account for over 50% of all new cases of cancer diagnosed in the US. Colorectal, pancreatic, breast, lung, and bronchus cancers account for over 50% of mortality.
Why do healthy individuals get cancer?The primary factors are genetics and particular environmental or behavioral stimuli. According to certain theories, some cancers have a genetic predisposition to develop, making you more likely to contract the illness.
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Terrance was in an accident that caused damage to the part of his brain called the cerebellum. Which skill-related component will most likely be affected by this damage?.
Terrance was in an accident that caused damage to the part of his brain called the cerebellum then the skill-related component that will most likely be affected by this damage is : balance.
What happens when cerebellum is damaged?Damage to the cerebellum causes:
coordination loss of of motor movement inability to judge distance inability to perform rapid movements movement tremors staggering and wide based walkingCerebellum is that part of your brain that helps in coordinating and regulating a wide range of functions and processes in your brain and body both.
Cerebellar damage disrupts the brain signals that are responsible for controlling movement, therefore many cerebellar patients have difficulty walking.
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a tropic hormone is any hormone that a. stimulates or suppresses the release of posterior pituitary hormones. b. increases reproductive behavior. c. stimulates or suppresses the release of other hormones. d. influences the ovaries and testes. e. is released by the pituitary gland.
A tropic hormone is any hormone that stimulates or suppresses the release of other hormones.
What is tropic hormone?Tropic hormones are hormones of the anterior pituitary gland. These hormones influence the growth, function, or nutrition of other endocrine cells.Tropic hormones are found in body systems including the endocrine, gastrointestinal, urinary, and nervous systems.Tropic hormones are released from one endocrine gland and act on another. Tropic hormones stimulates the growth of target tissues. They can lead to hypertrophy or hyperplasia. Most tropic hormones are produced and secreted by the anterior pituitary gland. The hypothalamus secretes trophic hormones that target the anterior pituitary gland, and the thyroid secretes thyroxine, which targets the hypothalamus, and thus can be considered trophic hormones. Tropic hormones act indirectly on target cells by first stimulates other endocrine glands. Corticotropin-releasing hormone (CRH) is released from the hypothalamus and stimulates the anterior pituitary gland to release adrenocorticotropic hormone (ACTH).To learn more about tropic hormone from the given link :
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Why is the distance between euorpe and north america slowly increasing each year
Which statement is true about the theory of plate tectonics and the theory of continental drift?
Responses
The theory of plate tectonics tells exactly where the continents were before Pangaea divided.
The theory of plate tectonics tells exactly where the continents were before Pangaea divided.,
The theory of plate tectonics shows that continental movements could not have happened.
The theory of plate tectonics shows that continental movements could not have happened.
The theory of plate tectonics shows that Pangaea was impossible, but the continents did move.
The theory of plate tectonics shows that Pangaea was impossible, but the continents did move.
The theory of plate tectonics explains how continental movements could occur.
The theory of plate tectonics explains how continental movements could occur.
What is plate tectonic and causes?Volcanic eruptions and earthquakes are both brought on by the shifting of tectonic plates. It is crucial to understand that the Upper mantle is divided into sizable chunks known as tectonic plates. You should keep in mind that tectonic plates are enormous fragments of the Earth's mantle that fit together move over the planet's surface.
How important is plate tectonics?Because of it, the Earth is now habitable. We can't survive underwater, therefore it created the continents on that we now reside. Volcanoes are produced when plates clash and subduct (when one plate slips under another). We believe that this procedure, repeated numerous times, is just what created the continents.
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Colorblindness is a recessive sexlinked disorder carried on the X chromosome. If a normal visioned male married a carrier female, what is the probability that they will have a boy who is colorblind?
Answer:
Explanation:
25%
Help!!! This is due tonight please help guys.
The recording station C is closest to epicenter.
How radio signals are transmitted to your radio?Radio works by sending and receiving electromagnetic waves. In wireless communication systems, information is transmitted through space using radio waves. On the transmitting side, the information to be transmitted is applied to a radio transmitter in the form of a time-varying electrical signal. A radio signal is an electronic current that travels back and forth at very high speed. The transmitter radiates this field outwards through its antenna. A receiver then picks up the field and converts it into sound that can be heard on the radio. A wave generator produces a high frequency radio signal. The frequency of this signal is many times greater than the frequency of the sound wave. This signal "carries" the audio signal wirelessly. The amplitude (height) of the carrier signal is changed or modulated to reflect changes in the amplitude of the audio signal.
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GIVING BRAINLIEST AMany of those living in the Pacific Islands
A.speak one launguage
B.practice traditional forms of art or dancee
C. belong to an ethincic group
