First-order heterotrophs, primary consumers, and herbivores are the organisms that consume only plants.
The trophic level is a hierarchical position in a food chain or food web of an ecosystem. The organisms at a trophic level share similar feeding habits. There are generally three trophic levels:
1. First trophic level
This level comprises the primary producers or the green plants. They perform photosynthesis and use carbon dioxide and water for the synthesis of their food.
2. Second trophic level
The organisms of this level feed upon the organisms of the first trophic level. This means that they feed upon plants. These include primary consumers, herbivores, and first-order heterotrophs.
3. Third trophic level
The organisms of the third trophic level feed upon the organisms of the second trophic level. These include secondary consumers and second-order heterotrophs.
A heterotroph is an organism that does not prepare its food itself but is dependent on the other organism. First-order heterotrophs are thus primary consumers or herbivores that consume only plants.
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what will scientists in past define health as
Answer: a state of social,mental, and physical well-being.
Explanation:
I'm old so ik :)
Enzymes affect the reactions in living cells by changing the
A( products of the reaction
B( speed of the reaction
C( pH of the reaction.
D( temperature of the reaction
Answer:
B( speed of the reaction
HELP PLEASE!!! THIS IS DUE IN A HALF HOUR. NO LINKS PLEASE
Answer:
Ardea herodias
Explanation:
The photograph shows a way individuals work together in groups.
What kind of work does the photograph represent?
A. Domestication
B. Manufacturing
C. Agriculture
D. Hunting and gathering
Answer:
No c is the right answer.
Answer:
agriculture
Explanation:
becausethey are xrops
Mitosis is the division of a cell's ____.
A. nucleus
B. cytoplasm
Answer:
B. cytoplasm
Explanation:
Mitosis is division of a cell's cytoplasm.
Fill in the lab questions about you alien and thinking about genetics!
Did your alien have more or less features in common with your peers? Why do you think so?
HAS
Question 2 Multiple Choice Worth 4 points)
(03.02 MC)
What is the function of DNA polymerase?
DNA polymerase is responsible for the process of DNA replication
you inoculate a plate of general-purpose medium with clostridium sporogenes, and you incubate it for 48 hours at its optimum temperature. when you remove the plate from the incubator, you notice that there is no growth on the plate. besides errors made in inoculation, what else could explain this lack of growth?
In addition to inoculation, this organism is an obligate anaerobe that needs the lack of oxygen for growth.
Being a stringent anaerobe, Clostridium sporogenes cannot develop in the presence of oxygen. So, if there was oxygen in the plate, that might account for why there wasn't any plate growth. But in addition to mistakes made during inoculation, other elements including temperature, pH, and the availability of nutrients can also have an impact on bacterial development.
The term "inoculation" refers to the process of immunizing a person against a disease by ingesting infectious material, germs, or a vaccine. Inoculation is the technique of introducing bacteria to places where they will develop and multiply in microbiology.
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Answer the Question Below
It is crucial to give each organism a scientific name since each scientific name is unique to one species, making it easier for scientists to identify each organism.
Why do scientists favour scientific names over ordinary names?A set of uniform standards form the foundation for scientific names. They can be used to locate an organism anywhere in the world since they are distinctive. Therefore, it is believed that common names for living things are less important than their scientific ones.
when giving an organism a scientific name?The Binomial Naming System is a two-name system used by scientists. The system used by scientists to name plants and animals describes the genus and species of the creature. Genus and species are the first and second words, respectively. While the second word is lowercase, the first is capitalised.
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____________ is the process in which action potentials in the nerve fiber lead to action potentials in the muscle fibe
The process in which action potentials in the nerve fiber lead to action potentials in the muscle fiber is known as "excitation-contraction coupling."
When a nerve impulse reaches a neuromuscular junction, it causes the release of a neurotransmitter known as acetylcholine, which then binds to receptors on the sarcolemma of the muscle fiber, triggering a series of events that lead to muscle contraction.
The process by which this occurs is called excitation-contraction coupling. The muscle fiber generates action potentials due to the depolarization of the sarcolemma, which is caused by the influx of positively charged ions such as sodium into the muscle fiber.
This depolarization leads to the release of calcium ions from the sarcoplasmic reticulum, which then bind to the regulatory proteins on the actin filaments, allowing for the myosin heads to bind to the actin and initiate muscle contraction.
In summary, the process of excitation-contraction coupling is how action potentials in the nerve fiber lead to action potentials in the muscle fiber, ultimately resulting in muscle contraction.
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QUESTION 10
Which three components are common to the circulatory systems of most living animals?
arteries, veins, capillaries
vessels, heart, circulating fluid
aorta, ventricles, atria
blood, heart, cavities
Answer:
B. VESSELS, HEART, CIRCULATING FLUID.
Explanation:
Blood is the circulating fluid. It is the connective tissue of liquid plasma and cells.
Heart is a muscular pump to move the blood and have it circulate throughout the body of living animals.
Blood vessels are arteries, capillaries and veins that deliver blood to all tissues.
The Circulatory System has two types. They are the open circulatory system and the close circulatory system.
An open circulatory system is one where the blood does not circulate inside blood vessels but also flows into cavities that irrigate tissues.
A close circulatory system is one where the blood circulate only inside the blood vessels.
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Answer:
B)vessels, heart, circulating fluid
Explanation:
studying competition between the peaks of otter salamander and the eastern redback salamander would be an example of studying ecology at the level.
Studying the competition between the peaks of otter salamander and the eastern redback salamander would be an example of studying ecology at the population level.
Ecology is a scientific discipline that studies living organisms and their interactions with the environment. The different levels of ecology are population ecology, community ecology, ecosystem ecology, and biosphere ecology.
Population ecology is the study of how populations of organisms interact with their environment, including competition between species, predator-prey relationships, and reproductive behavior, among other things.
The peaks of Otter salamander (Plethodon hubrichti) are a group of salamanders found in the Appalachian Mountains in the eastern United States. They are highly adapted to their habitat, which is often moist and cool, and are known for their unique breeding habits.
The eastern redback salamander (Plethodon cinereus) is another species of salamander found in the Appalachian Mountains. It is a common species, and is often found in moist, wooded areas where it feeds on insects and other small invertebrates.
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Enzymes and antibodies are examples of (4 points)
Proteins
Explanation:
Proteins are the most diverse biomolecule on earth, performing many functions required for life. Protein enzymes are biological catalyst, maintaining life by regulation where and when cellular reactions occur.
-antibodies are proteins that are synthesized by an animal in response to the presence of a foreign substance in our body called an antigen. They play a great role in the immune system and are usually found in blood and other bodily fluids.
this part of the investigation that a variable is not applied is______
Energy inefficiency is a. biological phenomena. b. the balance on nonrenewable sources of energy around the world. c. an ecological system cycle. d. the wasting of precious nonrenewable sources of energy.
Energy inefficiency is the wasting of precious nonrenewable sources of energy that could otherwise be used to meet the needs of future generations.
Here, correct option is D.
Energy inefficiency is a global phenomenon that affects both developed and developing countries. It is caused by the inefficient use of energy resources, such as electricity, gas, and oil, resulting in higher energy consumption and higher costs. It also leads to higher carbon emissions and other pollutants, negatively impacting the environment and human health.
In order to reduce energy inefficiency and lessen the impact of climate change, governments and businesses must take proactive steps to reduce consumption and improve efficiency. This includes implementing energy efficiency standards and regulations, investing in energy efficient technologies, and incentivizing energy conservation.
Therefore, correct option is D.
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During a chemical reaction, a fixed amount of iron combines completely with a fixed amount of oxygen to form iron oxide. Which statement best describes the mass of the iron oxide that is produced?
A.The mass is equal to the mass of the iron plus the mass of the oxygen.
B.The mass is greater than the combined mass of both the iron and the oxygen.
C.The mass is equal to the mass of the iron minus the mass of the oxygen before reacting.
D.The mass is less than the mass of the iron but greater than the mass of the oxygen before reacting.
Answer:
The mass of the iron oxide produced is the mass of the fixed amount of oxygen and fixed iron that reacted together.
This is predicated on the law of conservation of mass.
The law of conservation of mass states that "in a chemical reaction, matter is neither created nor destroyed, but atoms are rearranged".
The mass of the product is found by summing up the mass of the reactants.
So if we add the mass of oxygen and iron together, we get the mass of iron oxide that will be produced.Explanation:
An igneous rock has large red, black, and green crystals. How else can this rock be accurately described? Fine texture cooled quickly intrusive origin created by lava
Igenous rocks are created by lava colling and cristalization. They can be either intrusive (slow cooling) or extrusive (fast cooling). The option that includes all ingeous rocks is D). created by lava.
What is an igneous rock?Igenous rocks come straight from the interior of the Earth.
A liquid mass of silicate composition coming from the Earth's core erupts out of a volcano as lava.
Since this melted mass comes from the Earth's interior, its temperature is extremely high.
Lava begins to cool and solidify during its ascent to the Earth's surface.
Igneous rocks are produced by the magma cooling and cristalizing when they get in touch with air.
Thre are two types of igneous rocks
• plutonic rocks ⇒ close to the terrestrial crust ⇒ intrusive ⇒ slow cooling
• volcanic rocks ⇒ on the surface ⇒ extrusive ⇒ quick cooling
Among the options, there are three descriptions that match the igneous rocks,
cooled quickly ⇒ this is the case of extrusive rocks, when lava gets in contact with cold air and quickly cristalizes.intrusive origin ⇒ this is the case of magma that slowly cristalizes near the crustcreated by lava ⇒ this is the case of all igneous rocks.If we need to find only one of these options, we could choose option D, created by lava, since it involves all types of ingeous rocks.
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Plants store carbohydrates as starch. Name one other substance used for food storage in plants,
especially in their seeds.
Answer:
Glucose
Explanation:
Glucose is used by plants for energy and to make other substances like cellulose
Asters are A) in the mitochondria. B) in lysosomes. C) arrays of short microtubules that radiate from the poles and may brace the centrioles against the membrane. D) attached to ribosomes. E) Bridges of microtubules between the centrioles and the opposite poles of the cell.
The correct option is C) Asters are arrays of short microtubules that radiate from the poles and may brace the centrioles against the membrane.Asters are also a term used in cell biology to refer to a radial array of microtubules that is found in the cytoplasm surrounding the centrosome, which is a structure that plays a key role in cell division. The asters, along with the spindle fibers, are important in organizing the chromatin during mitosis and meiosis.
During cell division, the centrosome duplicates and moves to opposite poles of the cell, and the microtubules of the asters radiate out from each centrosome towards the cell membrane. This forms a structure known as the mitotic spindle, which is responsible for separating the chromosomes into two identical sets during cell division.
The asters also play a role in the positioning of the spindle apparatus within the cell, as well as in the separation of the spindle poles during cell division. They are important for ensuring the fidelity of chromosome segregation during mitosis and meiosis.
In summary, the asters in the context of cell biology refer to the radial array of microtubules that is found around the centrosome, and they play a critical role in organizing the chromatin and separating the chromosomes during cell division.
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which of the following is a component of rna but not a component of dna
1. ribose
2. deoxyribose
3. phosphate group
4. Nitrogen bases A C T G
Answer:
RNA is a single-stranded polymer of
nucleotides. It also differs from DNA in
that it contains the sugar ribose, rather
than deoxyribose, and the nucleotide
uracil rather than thymine.
Which of the following is TRUE about meiosis?
A.Cut the number of
chromosomes in half
B. Leaves the number of chromosomes the same 0
c. Doubles the number of chromosomes
D. Produces diploid cella
Answer: A and C
Explanation:
During Meiosis, the cell or chromosome splits in half, and the other halves grow back.
Which of the following is the correct sequence for the pollen tube to eventually reach the egg in a flowering plant?
a. stigma, ovary, ovule, style
b. style, stigma, ovary, ovule
c. stigma, style, ovary, ovule
d. ovule, ovary, style, stigma
Answer:
b
Explanation:
.......................
Answer:
The pollen tube eventually reaches the egg in a flowering plant by passing through the stigma, style, ovary, and ovule.
Explanation:
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What would happen to a population if all females reproduce through parthenogenesis alone?
Answer:
All the offspring from parthenogenesis are female. So if the female stick insects carry on reproducing alone, the males could be wiped out. ... This may help explain why parthenogenesis remains rare, even in species that are capable of it. In such species, "males typically force females to mate".
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Photosynthesis is an example of
Answer:
autotrophic nutrition
Answer:
Photosynthesis is an example of Anabolism and endergonic reactions.
Explanation:
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. Hence Photosynthesis is an example of Anabolism and endergonic reactions.
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what are the properties and characteristics of metamorphic rock
Answer:
metamorphism: Characteristics of Metamorphism In general, a metamorphic rock is coarser and has a higher density and lower porosity than the rock from which it was formed. Under low grade metamorphic conditions, the original rocks may only compact, as in the formation of slate from shale.
Explanation:
a population of interbreeding birds has been split by a geological event after which the isolated part of the population started to evolve into an incipient species with different mating rituals. due to a recent environmental change the two populations are now able to potentially mate again in what is called a hybrid zone. mating does take place every now and then but the hybrid offspring appear less able to survive. as a consequence, mating rituals start to diverge even further. we call this process of continued divergence? group of answer choices stability reinforcement behavioral isolation fusion postzygotic isolation
The process of continued divergence in this scenario is called reinforcement.
Natural selection works to prevent hybridization between divergent populations through a process known as reinforcement, which leads to the emergence of interbreeding barriers and greater population divergence. In this instance, the environmental change has made it possible for the two previously separated populations to interact once more. However, the hybrid offspring are less likely to survive, which encourages selection against hybridization and the development of novel mating rituals, leading to the populations' continued divergence.
Understanding population dynamics necessitates being aware of the many influences that dispersal, productivity, and survival have on population growth. This is crucial for the preservation of tiny, recently established populations since stochastic births and deaths could have a negative impact on their growth or possibly cause them to go extinct.
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Long chains of amino acids are called?
Proteins
Fats
Lipids
Carbohydrates
Answer:
Proteins are long chains of amino acids
Explanation:
With your partner list three biological processes involving biosynthesis break down what you think your body could carry out using the matter and energy from the beef burger
Answer:
Photosynthesis, chemosynthesis and ATP synthesis.
Explanation:
Photosynthesis, chemosynthesis and ATP synthesis are the three biological processes that involves biosynthesis break down. Beef burger having bread, meat and cheese which provides carbohydrates, proteins and fats to the body respectively. Carbohydrates are converted into glucose, proteins are converted into amino acids and fats are converted to fatty acids in order to absorb by the cells of the body.
Many public locations, such as airports, hotels, schools, shopping malls, and coffee shops, are hotspots that provide Wi-Fi Internet connections to users with mobile computers or devices. Group of answer choices True False
The statement is true. Many public locations offer Wi-Fi connections as a convenience to their visitors or customers.
This is especially important in today's world where people are constantly connected to their devices and need internet access on the go. Airports, hotels, schools, shopping malls, and coffee shops are just a few examples of public locations that offer Wi-Fi connections. Users with mobile computers or devices can easily connect to these networks, providing them with internet access and allowing them to work, browse the web, or stay connected with friends and family. However, it is important for users to be cautious when using public Wi-Fi connections. These networks may not always be secure and can leave users vulnerable to cyber-attacks or identity theft.
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If a point mutation occurs in the protein-coding region of a gene, how many amino acids may be altered as a result, assuming start and stop codons are not affected? Check all that apply:O 1O 2 O Many O 0
If a point mutation happens to occur in a protein coding region of a particular gene then only one amino acid will get altered on assuming that the start and the stop codons are not affected.
The correct option is option a.
A point mutation is basically defined a genetic mutation in which a single nucleotide base gets changed, inserted or even deleted from a particular DNA or an RNA sequence of the genome of an organism. Point mutations have a number of different effects which can occur on the downstream protein product.
These consequences are dependent on the nature of the mutation which has occurred. If a point mutation occurs and the start as well as stop codon are the same then the mutation will affect only a single amino acid.
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