Answer:
The sun provides more than enough energy to meet the whole world's energy needs, and unlike fossil fuels, it won't run out anytime soon. As a renewable energy source, the only limitation of solar power is our ability to turn it into electricity in an efficient and cost-effective way.
Answer:
Nothing is more important to us on Earth than the Sun. Without the Sun's heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.
Who are the units of Newtons named
after?
A. American scientist, Sir Isaac Newton
B. English scientist, Sir Isaac Newton
C. French scientist, Sir Isaac Newton
D. German scientist, Sir Isaac Newton
Cell replication is important for reproduction of body cells and reproduction of gametes. Which type of reproduction occurs only in gametes
Answer:
meiosis
Explanation:
meiosis occurs in reproductive organs
Select which statements are a part of natural selection.
organisms better adapted to their environment tend to survive
organisms better adapted to their environment tend to reproduce and increase in number
organisms pass on their traits to succeeding generations.
over time, favorable traits become more common in a population
Answer:
organisms better adapted to their environment tend to reproduce and increase in number
Answer: *organisms better adapted to their environment tend to survive
*organisms better adapted to their environment tend to reproduce and increase in number
*organisms pass on their traits to succeeding generations.
*over time, favorable traits become more common in a population
Explanation: all of them are correct :)
Pls help me pls this is due today
protein
Explanation:
beacause its ah. cd
Which organism exhibits behavioral adaptation?
an owl with large pupils and eyes that enable it to see better at night
a possum playing dead to increase its chances of survival
an insect that mimics its environment to hide from its predators
a desert plant that sheds its leaves to lessen water loss during the dry season
Answer:
B
Explanation:
edge2021
A possum playing dead to increase its chances of survival is an example of behavioral adaptation.
What is Behavioral adaptation?
This is an action an organisms does to increase survival rate when faced with some situations.
A good example is the possum which acts dead when faced with predators so as not to be killed which is why option B was chosen.
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Which structure is represented by the letter C?
Choose 1 answer:
A
Chloroplast
B
Mitochondria
C
Vacuole
D
Nucleus
Answer:
A. Chloroplast
Explanation:
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Answer:
A chloroplast
Explanation:
Need help please …..
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Which statement best describes the step in muscle contraction when the sarcomere is the shortest?
A The sarcomere is contracted, and the actin and myosin filaments are partially overlapped.
B The sarcomere is relaxed, and the actin and myosin filaments are partially overlapped.
C The sarcomere is contracted, and the actin and myosin filaments are completely overlapped.
D The sarcomere is relaxed, and the actin and myosin filaments are completely overlapped.
Answer:
C The sarcomere is contracted, and the actin and myosin filaments are completely overlapped.
Explanation:
In rest, the tropomyosin inhibits the attraction strengths between myosin and actin filaments. Contraction initiates when an action potential depolarizes the inner portion of the muscle fiber. Calcium channels activate in the T tubules membrane, releasing calcium into the sarcolemma. At this point, tropomyosin is obstructing binding sites for myosin on the thin filament. When calcium binds to troponin C, troponin T alters the tropomyosin position by moving it and unblocking the binding sites. Myosin heads join the uncovered actin-binding points forming cross-bridges, and while doing so, ATP turns into ADP and inorganic phosphate, which is released. Myofilaments slide impulsed by chemical energy collected in myosin heads, producing a power stroke. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament. Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin. Finally, Z-bands are pulled toward each other, shortening the sarcomere and the I-band, producing muscle fiber contraction.
In the sarcomere, which is the contractile unit of skeletal muscles, there are
Thick myosin myofilaments in the central region belonging to the A band. Thin filaments united to the Z lines, extending in the interior of the A band until they reach the border of the H band. Thin actin filaments composing the I band, which belong to two sarcomeres adjacent to a Z line.When the muscle contracts, the muscular fiber gets shorter and thicker due to the reduction in the length of the sarcomere. The H line and the I band get shorter. The Z lines get closer to the A band, meaning that they get closer to each other. A band keeps constant in length. This change is produced by movement mechanisms that involve a change in the relative position of actin and myosin filaments.
Answer:
C
Explanation:
edge 2021
2. Why are humans considered animals?
A. Their zygotes undergo changes to turn into a blastula.
B. Human cells have cell walls and are unable to move.
C. Humans can reproduce asexually when under stress,
D. Animals and humans are both uni-cellular organisms.
Answer:
It's A
Explanation:
Had it on a test
Humans are considered animals because as in animals zygotes after cell division turns into a blastula, hence option a is correct.
What are animals?More than any other species, humans are capable of learning new things. Indeed, the majority, but not fully, of what distinguishes us from other animals is anchored in language.
In addition, because we have a backbone, humans are considered to be members of the chordate animal phylum.
The zygote is split into the blastula after fertilization, three germ layers develop in the blastula, which in some species is a hollow ball of cells, during a process known as gastrulation.
Therefore, humans are classified as members of the primate order within the animal group and having the blastula stage, hence option a is correct.
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The picture shows an organ system in the human body.
Kidney
A
Bladder
What is a function of the organ system shown?
How can a scientist determine if two species are obligate mutualists? The scientist should observe the species in the environment to determine the types of interactions that the two species have. Then, the scientist should transplant each species alone to a new area and simultaneously transplant both species together to see if the single-species transplants die. The scientist should observe the species in the environment, determine the types of interactions that the two species have, and then add an invading species to see if it outperforms one of the other species. The scientist should observe the species in the environment, determine the types of interactions that the two species have, and then transplant both species to a new location to observe if they do better or worse than the individuals in their old location. The scientist should observe the species in the environment, determine the types of interactions that the two species have, and then remove one of the species to see if the other species does not survive.
Answer:
The scientist should observe the species in the environment to determine the types of interactions that the two species have. Then, the scientist should transplant each species alone to a new area and simultaneously transplant both species together to see if the single-species transplants die
Explanation:
When two species are obligate mutualists, both species benefit one another in such a way that one cannot survive without the other. Hence, in order to find out if two species are indeed obligate mutualists, they should be transplanted together away from other species on one side, and also transplanted individually on another side.
If they are obligate mutualists, the individual transplant would find it difficult to survive and should die in no time while the transplant done together should survive. All other factors being kept constant.
¿Cómo transformamos las fuentes de energía renovable en energía eléctrica necesarias para el desarrollo sostenible de nuestro país?
Answer:
Answer to the following question is as follows.
Explanation:
Natural energy is used to generate power in renewable technologies. Wind, wave, ocean, hydro, biomass, and solar energy are all potential sources of energy. ... A variety of technologies, such as floating offshore wind farms, biomass power plants, and hydroelectric systems, will be required to achieve this.
Renewable energy production and utilisation will enhance energy security, the environment, the economics, mechanical production, construction, transport, and industry, as well as assist in the creation of new employment. Solar, wind, and biomass energy can fulfil local energy demands while also helping to enhance environmental protection.
Which organism in the food web below is found in the first trophic level of the
ecosystem?
A. Fungus
B. Strangler fig
C. Fruit bat
D. Sloth
Fungus is the organism in the food web displayed in the image in the first trophic level of the ecosystem.
What is trophic level?Trophic level is defined as the position of an organism in the food chain or food web.
The trophic level consists of organisms at different levels. The first trophic level is made up of producers that initiate the transfer of energy.
According to this question, an image showing a food web is given. The first trophic level in this food web is the fungus because it starts the energy transfer.
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1) which of the following terms is defined as ''all the organisms living in a particular place and their interactions with each other and with their environment ''
A) habitat
B) population
C) community
D) ecosystem
Answer:
D) Ecosystem I think
Answer:
B. population
Explanation:
they are interact with each other
Drag each label to the correct category.
Decide whether each statement describes mass or weight.
measured in newtons
measured in kilograms
does not change when
gravity changes
changes when gravity
changes
the amount of matter
in something
a gravitational force
Mass
Weight
Answer:
Weight: newtons, kilograms and changes when gravity changes
Mass: does not change when gravity changes, the amount of matter in something, and a gravitational force
Hope I get this right :)
Answer:
Weight is measured in Newtons, mass is measured in kilograms, mass does not change when gravity changes; weight does, mass is the amount of matter in an object, and weight is a gravitational force
Explanation:
Weight is measured in Newtons, mass is measured in kilograms, mass does not change when gravity changes; weight does, mass is the amount of matter in an object, and weight is a gravitational force
What is the plural of drive-in? Use a dictionary if necessary.
O drives-in
O drive-ins
O both
The water vascular system of echinoderms The water vascular system of echinoderms functions in locomotion and feeding. functions as a circulatory system that distributes nutrients to body cells. moves water through the animal's body during filter feeding. is bilateral in organization, even though the adult animal is not bilaterally symmetrical.
Answer:
The water vascular system of echinoderms functions in locomotion and feeding.
Explanation:
The water vascular system of echinoderms is responsible for the functions in locomotion and feeding. The water vascular system is a hydraulic system that is used by echinoderms for example sea stars and sea urchins, for the purpose of locomotion (movement), food and waste transportation, and respiration. This system is composed of canals connecting numerous tube feet.
Just after they taste a sweet liquid, mice are injected with a drug that produces an immune response. Later, the taste of the sweet liquid by itself triggers an immune response. This best illustrates
Answer:
This question lacks options, options are:
a) classical conditioning
b) observational learning
c) spontaneous recovery
d) operant conditioning.
The correct answer is a.
Explanation:
The classical conditioning theory derives from the experiments of the Russian physiologist Ivan Pavlov, he hypothesized that when any stimulus predicts the occurrence of another stimulus that triggers an automatic response, that first stimulus would acquire the ability to trigger that response, in other words , is a type of learning according to which an originally neutral stimulus, which does not provoke a response, becomes able to provoke it thanks to the associative connection of this stimulus with the stimulus that normally provokes said response. The conditioning of the immune response is built on the same principles of the classical conditioning paradigm described by Ivan P. Pavlov in which an environmental stimulus that by itself does not produce any immune reaction (conditioned stimulus), is associated with substances that stimulate or they suppress immune function (unconditioned stimulus), and finally, by presenting the conditioned stimulus alone, trigger the appropriate immune response.
which of the following structures helps our sense of balance
Answer:
D answer is correct
Explanation:
semi circular helps our sense of balance
Answer:
eardrum
Explanation:
The ear is a sensory organ that picks up sound waves, allowing us to hear. It is also essential to our sense of balance: the organ of balance (the vestibular system) is found inside the inner ear. It is made up of three semicircular canals and two otolith organs, known as the utricle and the saccule
Inside a skeletal muscle cell, a set of small cylinders called _______ are assembled into larger cylinders called _______.
Answer:
Myofibrils
Intercalated disc
Explanation:
Myofibrils in a skeletal muscle cell are a set of cylinders which are repeated form of sacromeres.
Intercalated discs are assembled into larger cylinders and are involved in cell to cell communications, they link cells to get her and transmit electrical impulses within the sacrolemma
Name the process by which sugar moves into cell A.
Name the process by which sugar moves into cell B.
Answer:
sugar moves into cell A by diffusion
sugar moves into cell B by Active transport
Name the process by which sugar moves into cell A - Diffusion
Name the process by which sugar moves into cell B - Active transport.
Glucose tends to move from an area of high concentration to an area of low concentration, a process called diffusion
the glucose transporter works with the concentration gradient, its process of moving glucose across the cell membrane is called facilitated diffusion.In order to move against the concentration gradient is due to cell require the transport method called active transportActive transport requires energy to move molecules against the gradient.Thus, Name the process by which sugar moves into cell A - Diffusion
Name the process by which sugar moves into cell B - Active transport.
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List in order the levels of classification,beginning with domain
Answer:
The answer is Domain, kingdom, phylum, class, order, family, genus, species.
Because the cells of skeletal muscle are relatively large and cylindrical in shape, they are also known as
Answer:
fibers or tubules.
Explanation:
if masquiteos have babys in water then can the have babbies in fog
Maybe, mosquitoes lay eggs in still water like a in pail or bucket
If a person uses up his or her reserve supply of glycogen and still does not eat, the body will break down ____ to provide glucose for the brain.
Answer:
carbohydrates
Explanation:
this is because even though the person hasn't eaten he or she still has an amount of carbohydrates in the body that can be broken down and its end product glucose will be obtained
A teacher gave the lab group shown below an "unsafe practice" warning. What is most likely the basis for the teacher's warning?
How is an organic compound different from an inorganic compound?
Organic compounds contain carbon atoms bonded to other atoms.
Inorganic compounds contain oxygen atoms and hydrogen atoms.
Organic compounds come only from nonliving things.
Photosynthesis is responsible for organic compounds.
Answer:
The correct answer is
" organic compounds come only from nonliving things".
hope it helps you
plz mark me as brainliest
have a good day!
Organic compounds contain carbon atoms bonded to other atoms. The correct option is A.
What are organic compounds?Any of a wide area of chemical compounds in which one or many carbon atoms are covalently connected to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.
Carbides, carbonates, and cyanides are among the few carbon-containing compounds that are not classified as organic.
The main distinction between organic and inorganic compounds is that organic compounds always contain carbon, whereas most inorganic compounds do not.
Furthermore, almost all organic compounds contain carbon-hydrogen or C-H bonds.
Organic foods are grown without the use of synthetic pesticides, fertilizers, or herbicides.
Organic meat, eggs, and dairy products are derived from animals that have been fed natural feed and have not been given hormones or antibiotics.
Thus, the correct option is A.
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in your own words, what is the definition for Anti-codon?
Answer:
Basically an Anti-Condon is a sequence of three nucleotides forming a unit of genetic code in a transfer RNA molecule, corresponding to a complementary codon in messenger RNA.
Explanation:
Codons are trinucleotide units that present in mRNA and codes for a particular amino acid in protein synthesis. Anticodon is trinucleotide units that present in tRNA. It is complementary to the codons in mRNA.
Hoped this helped :)
Importance of the water cycle
Answer:
because it ensure the availability of water for all livings, 95% of our world is covered with water but most of them are either forzen or under ground and also purifies water which can be ready for reuse.
Betty's metabolism is unusually sluggish. There is MOST likely an abnormality with Betty's _____ gland.
Answer: Betty's metabolism is unusually sluggish. There is MOST likely an abnormality with Betty's thyroid gland.
