There are some species in every ecosystem that are necessary for the other species in the system to survive. The ecosystem may not be able to continue functioning without the keystone species, which could be a small plant or a large predator.
What are keystone species ?
Scientists may argue over which organisms or plants in a given ecosystem should be called a keystone species because a keystone species does not have a formal name. The idea, according to some wildlife scientists, oversimplifies the role of a single animal or plant in intricate food webs and habitats. On the other hand, referring to a specific plant or animal as a "keystone species" in an ecosystem is one way to educate the general public about how crucial one species can be to the continued existence of numerous others.There are three sorts of cornerstone species referred to by numerous researchers: mutualists, ecosystem engineers, and predatorsThe "keystone" is regarded as one of the most crucial components in any community or arrangement. An organism that contributes to the stability of the system is known as a keystone species in any kind of ecosystem, including marine ecosystems. Ecosystems would look very different without its keystone species. If their keystone species vanished, some ecosystems might not be able to adjust to changes in the environment. That could result in the ecosystem's demise or it could allow an invasive species to take control and significantly alter the ecosystem's course.To know more about keystone species check this:
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What animal phylum do leeches belong in?
Answer:
What animal phylum do leeches belong in?
Explanation:
Leeches are segmented parasitic or predatory worms that belong to the phylum Annelida and comprise the subclass Hirudinea. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular, segmented bodies that can lengthen and contract.
Answer:
Annelida
Explanation:
"Leeches are segmented parasitic or predatory worms that belong to the phylum Annelida and comprise the subclass Hirudinea. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular, segmented bodies that can lengthen and contract."
Scientific name: Hirudinea
Phylum: Annelida
Kingdom: Animalia
What us one way people have negatively affected land resources?
A. Habitat Restoration
B. Urbanization
C. Terrace Farming
D. Reforestation (Not deforestation)
Please Help!
Answer:
A
Explanation:
because people wants more than tehy want
What 4 things do both eukaryotic and prokaryotes cells contain?
Answer:
Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.
Explanation:
The similarities between the eukaryotic and prokaryotic cells are:
Cell membraneRibosomesDeoxyribonucleic acid (DNA)Cell wallEukaryotic cells are those cells that contains organelles that are membrane-bound. These cells are found in plants, animals, fungi, and protists.
Prokaryotic cells are those cells that does not contain membrane-bound organelles. The cell structure is simple with no definite nucleus.
There are four components that can be found in both the eukaryotic and prokaryotic cells. They include:
Cell membrane: This is a semi-peameable membrane that surrounds the cell.Ribosomes: They are structures that are specialized for protein synthesis.Deoxyribonucleic acid (DNA): This is a hereditary material.Cell wall: This contains cellulose that helps protect the cell.Learn more here:
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There are birds that eat the food from between the teeth of alligators, leaving the
alligators with clean teeth and the birds with a meal. What type of ongoing relationship
is this?
B. Mutualism
C. Commensalism
D. Parasitism
A. Predator & Prey
Answer:
B.
Explanation:
mutualism
Given the DNA sequence 3'TACCGAGGCATT 5' what is the complementary strand sequence?
Answer:
′UACCAAGGUAG5
Explanation:
DNA is a two-stranded molecule. Each strand is a polynucleotide composed of A (adenosine), T (thymidine), C (cytidine), and G (guanosine) residues polymerized by "dehydration" synthesis in linear chains with specific sequences. Each strand has polarity which runs from 5′ to 3′.
In DNA, A pirs with T and G pairs with C.
Fo through the original 5′ to 3′ sequence pairing each A with T ad each C wth G.
While RNA is a single strand molecule. This Strand also consists polynucleotide composed A, C, G and U (uridine).
For a complementary strand replace A with U (because RNA does not consist T), T with A, C with G, and G with C.
Hence,
Given strand: 5′ATGGTTCCATC3′
Complementary RNA strand: 3′UACCAAGGUAG5′
Keep in mind that the complementary strand will read from left to right in the 3 to 5 direction.
True or False. If gametes were produced in the same way as daughter cells in mitosis, there would be a doubling of the chromosome number at fertilisation.
Answer:
true im pretty sure
Explanation:
What does the amount of fundamental particles determine
Answer:
The modern view of electric charge is that it is a basic property of atoms, the fundamental particles of which all matter is made. Atoms themselves are composed of three different types of particles—protons, neutrons, and electrons.
Explanation:
How do biological systems respond when acids or bases are added?
Biological systems do not experience any changes in pH.
Biological systems do not experience any changes in pH.
Cells produce different molecules that can function at the new pH levels.
Cells produce different molecules that can function at the new pH levels.
Most biological molecules can function at any pH value.
Most biological molecules can function at any pH value.
They have substances that counteract acids or bases to prevent the pH from changing.
Answer:
The correct answer is - They have substances that counteract acids or bases to prevent the pH from changing.
Explanation:
Including human, all the organism depends on the water so therefore known as waster system based which suggests that they depend on the acid-base liquid equilibrium to maintain its cellular functions and homeostasis.
Acid and bases are influences and determine the pH value of the chemistry of biological systems as every cycle is affected by the pH fluctuation so the maintenance of pH is very critical.
so as to keep biological system compound and in the equilibria of protonation, they have certain substances in each cycle or part that counteract the acid and base to maintain pH.
for instance:
phosphate ion maintains the Cytoplasm pH
the bicarbonate ion regulates the Blood pH
HELP FAST PLEASE. Vacuoles in different organisms and cell types typically have different compositions and functions. Which of the
following pairs are most similar in composition and function?
•central vacuoles in plant cells and food vacuoles in amoebas that store sugar
•contractile vacuoles in unicellular eukaryotes and central vacuoles in plant cells
•contractile vacuoles in unicellular eukaryotes and small storage vacuoles in plant cells
•food vacuoles in amoebas and lytic vacuoles in plants that contain hydrolyzing enzymes
Answer:
The answer is B
Explanation:
Jus took the test on edgenuity
Answer:
Food vacuoles in amoebas and lytic vacuoles in plants that contain hydrolyzing enzymes
Solve this question?
Answer:
Tissue level
Explanation:
PLEASE HELP FAST!!
CELLS: Describe the structure of a eukaryotic plant cell. Indicate the ways in
which a non-photosynthetic prokaryotic cell would differ in structure from this
generalized eukaryotic plant cell.
Answer:
A cell that is nonphotosynthetic, such as a prokaryotic bacterium, would not require chloroplasts to function.Explanation:
A broad sweeping eukaryotic plant cell accomplishes the basic functions required for plant care. It's a jumble of organelles held together structurally by the cell membrane, which is located outside of the cell wall.
What is eukaryotic cell?Plant and animal cells are eukaryotic, which means they contain nuclei. Plants, animals, fungi, and protists all have eukaryotic cells.
They typically have a nucleus organelle surrounded by a membrane called the nuclear envelope, which stores DNA.
Prokaryotes are typically simpler, requiring only a few organelles to survive. This is frequently because, as previously stated, it requires less energy.
It has DNA to contain genetic material, ribosomes to make proteins, a cell membrane, and a cell wall to protect the cell from its surroundings. While other components are produced by prokaryotes, the ones listed above are those that may be found in plant cells.
Aside from that, the non-photosynthetic prokaryotic cell requires much less energy, resulting in a cell that is much smaller and less complex than the generalized eukaryotic cell.
Thus, this way, a non-photosynthetic prokaryotic cell would differ in structure from this generalized eukaryotic plant cell.
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Which of the following correctly differentiates between the science in the time of Aristotle and science in the time of Galileo?
a) In Galileo's time, science was more like philosophy, whereas in Aristotle's time, it involved objective, empirical test.
b) In Aristotle's time, science was more like philosophy, whereas in Galileo's time, it involved objective, empirical test.
c) In Galileo's time, science was practiced only by great thinkers, whereas in Aristotle's time, it could be practiced by anyone.
d) In Aristotle's time, science was practiced only by great thinkers, whereas in Galileo's time, it could be practiced by anyone.
Answer:
the answer is b i believe:)
Explanation:
hope this helps love:))
Which of the following elements is required for growth and development and is in our DNA? *
hydrogen
carbon
oxygen
nitrogen
phosphorus
Which of the following processes allows the cells of an
organism to use carbon from the environment?
A mitosis
B fertilization
C transpiration
D photosynthesis
I am making a dating profile for a Ribosomes and a I need a pick-up line, a hashtag, a bio, and a theme song.
ASAP, please and thank you. Also I need info on functions on how to keep the organelle alive and healthy and any bad habits. It has to be true facts but also be fun and cool ! the organelle healthy
I NEED IT ASAP PLLLLSSSSSSSSS, answer all pls
Answer:
You: Hey how you?
Her: Good
You: sorry I can’t call you beautiful
Her:y
You: they say true beauty is on the inside and I in been snide before
Her:
You: can I get your number?
What human body response help maintain homeostasis?
Answer:
The endocrine system plays an important role in homeostasis because hormones regulate the activity of body cells. The release of hormones into the blood is controlled by a stimulus. For example, the stimulus either causes an increase or a decrease in the amount of hormone secreted.
Explanation:
Answer:
If a raise in body temperature (stimulus) is detected (receptor), a signal will cause the brain to maintain homeostasis (response). Once the body temperature returns to normal, negative feedback will cause the response to end. This sequence of stimulus-receptor-signal-response is used throughout the body to maintain homeostasis.
Explanation:
The structures found in a living cell can be compared to the parts of a factory that produces cars. What part of the factory is most similar to the nucleus of the cell ?
- the computer room that control the assembly process
- a conveyor belt that transports materials
- the generator that provides energy for the factory
- a storage bin that holds pieces needed to assemble cars
In the fluid Mosaic model, the cell membrane is made of two kinds of Molecules?
Answer:
The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules (phospholipids, cholesterols, and proteins) that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell environments.
Explanation:
What do all hypothesis have in common
Answer:
Explanation:
they are all based on observations
The organism shown is a free-living one that is anchored to the
bottom of ponds and streams during one stage of its life cycle.
What is the common name of the group to which this organism
belongs?
O cnidarians
O rotifers
O bryozoans
O mollusks
Answer:
Cnidarians
Explanation:
The organism describes sounds like a hydra, which is a genus of organisms that belongs to the phylum cnidaria. These organisms are tubular organisms with tentacles surrounding their mouths
the part of the that makes up one molecule of ADP
Answer:
not exactly getting your point in this question but this is the best that i have right now.
Explanation:
ADP= adenosine diphosphate
1. Nucleotide, adenine, ribose
2. 2 phosphate groups
3. Add a phosphate group to make ATP
4. When energy is released from ATP, it becomes ADP: ATP→ADP+P i
5. When energy is stored, ADP becomes ATP: ADP+P i →ATP
1. The (incorrect) belief that life is produced by a mysterious spirit or force is called: a. spiritualism b. recidivism C. vitalism d. hoodoo-voodooism
Answer:
it has the word spirit in it. Spiritualism
which of the following is a personal quality
Answer:
Flaxibility.
you didn't send the options so i guessed
Answer: Flexiblity
Explanation:
Prokaryotes and eukaryote cells have DNA, the genetic material. True or False ?
Answer:
False
Explanation:
False!! Prokaryotic cells have genetic information (as well as cytoplasm and a cell membrane); prokaryotic cells DO NOT HAVE A NUCLEUS!!! Pro means "NO"!! ... Cells that have a nucleus are called EUKARYOTIC.
which one of the following is not an organic compound
CaO i think, hoped that helped
II. Write a position statement on whether you think athletes like Santhi should be allowed to compete. Use evidence based reasoning in your position.
Answer:
The correct answer is stated in the Explanation section.
Explanation:
Santhi Soundarajan is an Indian track and field athlete that have won multiple international medals. Santhi was the center of a controversy when she was striped her silver medal after failing a sex verification test at the 2006 Asian Games. Santhi has a condition known as androgen insensitivity syndrome, she carries a Y chromosome althoug she has female genitalia. I think is not fair to disqualify an athlete like Santhi unless it is determined that she committed fraud and that she has an evident advantage. If Santhi knew her condition and it is established that she has an advantage after multiple tests, then her medal could be removed.
Which of the following best describes the formation of the bond shown in Figure 1 ?
А
An ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid,
B
An ionic bond is formed when the negative charge of an OH group is balanced by the positive charge of a hydrogen ion.
с
A covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O
D
A covalent bond is formed that replaces the hydrogen bond between the OH group and the H atom,
A covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O.
HOW PEPTIDE BOND FORMS:
Peptide bond is a bond that forms when two amino acids comes together. It involves the fusion of the amino group of one amino acid (NH2) and carboxyl group of another (COOH) with the release of water (H2O). Peptide bond is a type of covalent bond because it involves sharing of electrons between a carbon atom (C) and a nitrogen atom (N).Therefore, in the reaction shown in the image attached, a covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O.
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Help help help please
Answer:
Endoderism
Explanation:
What is the structure of the cell membrane?
O A
Two layers of carbohydrates with embedded water
O B.
Two layers of nucleic acids with embedded lipids
0 C
Two layers of phospholipids with embedded proteins
O D.
Two layers of proteins with embedded DNA
Answer:
C
Explanation:
The landscape of the membrane is studded with proteins, some of which span the membrane. and the plasma membrane is composed of a bilayer of phospholipids,
How have modern organisms evolved over long periods of time?
Answer:
Darwin's theory of natural selection states that organisms evolved from their common ancestors over a long period of time.
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