Yeast cells, plant cells, and mammal cells all share many similarities in cell signaling. This provides evidence that signal transduction pathways appeared in cells before the evolution of multicellular organisms.
In living organisms, cell signaling or signal transduction takes place through which a physical or chemical signal is transferred across cells.
various research and scientific studies have shown that signal transduction has much resemblance both in multicellular and unicellular organisms.
This phenomenon indicates that this process of cell signaling was present in multicellular organisms since early times.
Gradually, it evolved into unicellular organisms.
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Why is it somewhat true to say biology is the study of proteins?
Answer:
biology quite literally means the study of life. this means although proteins can be included in this it's not limited to just proteins
Explanation:
What kind of geographic barriers would have led to the finch in the Galapagos?
Answer:
Speciation in Galapagos finches occurred by founding of a new population, geographic isolation, changes in the new population's gene pool, behavioral isolation and ecological competition.
Explanation:
Geographical limitations include the natural factors or the water bodies like ocean, sea, rivers etc. that divide a place from another is called geographical barrier.
Galapagos finches are recognised as Darwin finches because he discovered them on the Galapagos island.
There is an unusual difference in their beak structure and purposes even though they reside on the same island.Speciation in finches transpired due to geographic separation, the modification in the population gene, ecological conflicts.When the species of finches were restricted to a specific area and could not mate resulted in isolation and hence variation.To learn more about Speciation and Darwin Finches follow the link:
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what is the correct classification of the symbiotic relationship?
F - Predator/Prey
G - Mutualism
H - Commensalism
J - Parasite/Host
which contributes most in supporting life on the deep ocean floor?
While there are many factors that contribute to supporting life on the deep ocean floor, one could argue that chemosynthesis is the most important.
Chemosynthesis is a process by which certain bacteria and archaea use chemical energy, rather than sunlight, to produce organic compounds from inorganic molecules. In the deep ocean, chemosynthetic bacteria and archaea form the base of many food webs, providing a critical source of energy for larger organisms. These bacteria and archaea can use a variety of energy sources, including hydrogen sulfide, methane, and ammonia, which are all abundant in the deep ocean.
One of the most well-known examples of a deep-sea ecosystem that relies on chemosynthesis is hydrothermal vents. These vents are located on the ocean floor, where tectonic activity allows hot water and minerals to spew out of the Earth's crust. The water is rich in sulfides and other inorganic compounds, which support dense communities of bacteria, tube worms, and other organisms that rely on chemosynthesis.
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If a strand of DNA has 20% C, what percent will be G?
Answer:
10%
Explanation:
Who is Ross Carr? Who is Ross Carr?
Two people with type o blood have three children. How many of those three children also have type o blood?
I have nooooooooooooooooooooooooooooooooooo idea
All three would have type o blood
What characteristics do all viruses have in common.
Answer:
All viruses have either DNA or RNA
Viruses also have a protein coat which protects the DNA or RNA.
Viruses cannot multiply outside a host cell
Viruses are unable to create their own energy
Viruses are not made of cells and they lack many of the cellular organelles found in other living organisms.
Explanation:
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A student performed a lab investigation to determine the effect of temperature on the heart rate of a water flea. What is the independent variable in the investigation? * o specie of flea O temperature O heart rate N O size of flea answer
Answer:
B. Temperature
Explanation:
The heart rate depends on the temperature so the heart rate is dependant and the one that changes is independant
1. Your classmate has asked you to be their partner in the lab. You are taking notes while your partner tells you what they see. Your assignment is to check off as many parts of the cell as possible to indicate that you have found them. Your partner says, "I see something that looks like sheets or discs layered on top of one another with little bumps all over it." Which of the following do you check off?
A. rough Endoplasmic reticulum
B smooth Endoplasmic reticulum
C ribosomes
2. cellular metabolism involves many types of chemical reactions that occur in a ____ sequence.
A specific
B random
3. _______ mechanisms allow for the cell to control which larger molecules move into and out of the cytoplasm.
A. osmosis
B. diffusion
C. active transport
The answers include the following:
Sheets or discs layered on top of one another with little bumps all over it means it is a rough endoplasmic reticulum and is denoted as option A. Cellular metabolism involves many types of chemical reactions that occur in a specific sequence and is denoted as option A.Active transport mechanisms allow for the cell to control which larger molecules move into and out of the cytoplasm and is denoted as option C.What is Cellular metabolism?This refers to the series of reactions which takes place in cells of organisms to ensure biological functions are fulfilled.
Most reaction which takes place are enzyme catalyzed which are specific in action and there is also random reactions but it rarely takes place.
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at least one endocrine gland is known to develop from:
The thyroid gland develops from the endoderm of the pharyngeal floor.
The endocrine system consists of various glands that produce and secrete hormones into the bloodstream. These hormones regulate numerous bodily functions, including growth, metabolism, reproduction, and stress response. During embryonic development, endocrine glands develop from specialized cells or tissues that undergo differentiation and maturation.
One of the endocrine glands known to develop from a specific structure is the thyroid gland. The thyroid gland develops from the endoderm of the pharyngeal floor. The endoderm is one of the three primary germ layers formed during embryogenesis. It gives rise to the lining of the digestive tract and associated structures.
The thyroid gland plays a crucial role in regulating metabolism and producing hormones such as thyroxine and triiodothyronine. These hormones are involved in controlling the body's energy expenditure, growth, and development.
Understanding the development of endocrine glands, like the thyroid gland, helps us comprehend their structure, function, and the disorders associated with them.
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At least one endocrine gland is known to develop from the ectoderm of the developing embryo.
The endocrine glands are specialized organs in the body that secrete hormones directly into the bloodstream. Endocrine glands control and regulate many of the body's processes, including growth and development, metabolism, and reproduction.
They work by releasing hormones that act as messengers, communicating with target cells throughout the body. At least one endocrine gland is known to develop from the ectoderm of the developing embryo. The pituitary gland is one of the primary endocrine glands in the body, and it is derived from the ectoderm.
The pituitary gland produces and secretes many hormones, including growth hormone, thyroid-stimulating hormone, adrenocorticotropic hormone, and prolactin. It is also responsible for regulating the functions of many other endocrine glands in the body.
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genetic inferences can be made on the basis of consistently observed phenotypic differences.
Genetic inferences can be made on the basis of consistently observed phenotypic differences. This statement is true. Phenotypic differences can be observed between different individuals, and these differences may be due to genetic factors.
What is a phenotype?
A phenotype refers to the observable characteristics of an individual that arise as a result of the interaction between their genotype and the environment. It is the physical appearance of an individual. These observable characteristics may be used to infer information about the individual's genotype, which refers to their genetic makeup or genetic constitution.
The phenotype is affected by several factors, including genetics, environment, and interactions between the two. As a result, consistent phenotypic differences between individuals may be due to genetic differences.
In conclusion, genetic inferences can be made on the basis of consistently observed phenotypic differences. These differences can be used to infer information about the individual's genotype.
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How can you get answers to questions like in science that are very involved?
The way to get answers to hipothesis scientists or students makes about their subject of interest, is to inquire and research it in their different aspects. Resea
Can someone help me please
Answer:
mangoose > snake > hawk > small bird > caterpillar > grass
Explanation:
easy
Which of these best describes the smooth muscle?
a. muscles that control movements inside your body
b. muscles that provide force to move your bones
c. Tissue in the heart
d. Strong connective tissue that attaches muscle to bone
e. muscles that you cannot control
f. muscles that appear banded
g. muscles under your conscious control
Answer:
Options A , C , E
Hope it helps!!
Smooth muscle is one of the three types of muscles involved in controlling the movements inside your body organs and is involuntary. Thus, options a and e are correct.
What are smooth muscles?Smooth muscles are the non-striated muscle that lacks sarcomeres and striations and thus lacks bands. They are found through the internal body structures and have a variety of functions.
The smooth muscles can be found in the walls of the liver, intestines, pancreas, urinary tract, uterus, etc. but not in the heart. They also have a spindle shape that contains only one nucleus in it.
They are not under the control of the organisms and rather are controlled by the nervous system, skeletal system, chemicals, and hormones.
Therefore, the smooth muscles are involuntary muscles that control the internal structure. Options a and e are correct.
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Explain why some environmental changes caused by humans cannot be dealt with by the process of succession
Answer:
Human activities such as logging or clearing land to make agricultural or urban ecosystems can also destroy a biological community. Activities such as excessive fishing or livestock grazing can change a biological community so much that it is replaced by a different community.
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Explanation:
Which of the following is an example of an object that is accelerating?
A
A basketball sits motionless on the gymnasium floor.
B
A hockey puck slows down and comes to a stop.
с
A soccer ball travels at 3 m/s for one second.
D
A train travels 100 km in a straight path towards the northeast.
Answer:
B
Explanation:
acceleration is a change in velocity, and situation B is the only situation where the velocity of the object is changing
Answer:
D.
Explanation:
Answer A - The basketball is not moving, motionless.
Answer B - The hockey puck eventually stops moving.
Answer C - The soccer ball eventually stops after one second.
Answer D is correct because the train is continuously moving.
What begins as a single-cell structure that is created when a sperm and egg merge at conception?.
When a sperm and an egg combine to form a zygote, it is initially a single-cell structure. Zygote, an egg cell that has been fertilized by the union of a female and a male gamete.
The zygote stage in the embryonic development of humans and other animals is brief and is followed by cleavage, in which the single cell divides into smaller cells. It is Ascaris lumbricoides.
Numerous organelles make up a cell's structure and carry out all of the vital tasks like energy production, cell reproduction, material transport, etc. Prokaryotic cells have different structural characteristics from eukaryotic cells.
A sperm cell and an egg cell unite to form a zygote, sometimes referred to as a fertilized ovum or fertilized egg.
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What is the data of an experiment?
A Information you learn in the experiment
B The report written about the experiment
C The questions asked in the experiment
D The presentation you give about an experiment
Answer:
A
Explanation:
you collect information based on what you are doing and how it is responding. therefore you are collecting data
Which process in the nitrogen cycle releases nitrogen gas into the atmosphere?.
Answer:
Denitrification completes the nitrogen cycle by converting nitrate (NO3-) back to gaseous nitrogen (N2). Denitrifying bacteria are the agents of this process. These bacteria use nitrate instead of oxygen when obtaining energy, releasing nitrogen gas to the atmosphere
Research endangered marine mammals of ocean and polar ecosystem. Write a 100or more words on the factors that have caused this mammals to become endangered.
Answer: hunting and capture by humans
Explanation: Principal anthropogenic threats to the survival of marine species include fisheries interactions (entanglement in nets and lines), hunting and capture by humans, ship strikes, pollution and habitat degradation, and climate change.
How does point mutation affect the amount of DNA?
The point mutation can alter the amount of DNA sequences depending upon the type of mutation.
A point mutation is a type of mutation in which the DNA or RNA, the organism's genetic material, is altered by the addition, deletion, or modification of a single nucleotide base. The amount of DNA is unaffected by base substitution since the nucleotide count is unaffected after the substitution. The amount of DNA grows with insertions and mutations because there are more nucleotides involved, whereas it decreases with deletion mutations. A common example of substitution point mutation is sickle cell anemia.
Hence, the type of point mutation determines the amount of DNA.
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A scientist is studying a cell and can clearly see that it has ribosomes and mitochondria. Which statement best describes how the cell could be classified?Which structure is unique to eukaryotic cells?
Answer:
The cell is eukaryotic because it contains mitochondria.
nucleus
Explanation:
The statement that best describes the way in which the cell would be classified is that the cell is eukaryotic because it contains mitochondria. The correct option is D.
What is eukaryotic cell?A eukaryote would be any cell or life form with a well-defined nucleus. The nucleus of a eukaryotic cell is surrounded by a nuclear membrane, which contains well-defined chromosomes.
The main difference between these two varieties of organisms is that eukaryotic cells have such a membrane-bound nucleus, whereas prokaryotic cells do not. Eukaryotes stockpile their genetic information in the nucleus.
Prokaryotes are organisms that lack a nucleus and various organelles in their cells.
Prokaryotes are classified into two groups namely bacteria and archaea, each of which has its own evolutionary lineage, according to scientists.
Thus, the correct option is D.
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Your question seems incomplete, the missing options of the question are:
The cell is prokaryotic because it contains ribosomes. The cell is prokaryotic because it contains mitochondria. The cell is eukaryotic because it contains ribosomes. The cell is eukaryotic because it contains mitochondria.Hiiii! Good morning/afternoon/evening/night! I hope you all are doing wonderful and here are some fun memes :)
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in the presence of adh, what happened to the urine concentration as the interstitial gradient concentration was increased?
The urine volume will decrease and the concentration will increase.
The medullary collecting ducts open up to water and solute readily when ADH is present. Because of this, the fluid entering the ducts (on its way to the renal pelvis and subsequent elimination) takes on the concentration of the medulla's interstitial fluid, resulting in concentrated urine. The fluid in the lumen, from which some solute has been removed, remains less concentrated than plasma, i.e. the urine is dilute, whereas in the absence of ADH, the collecting ducts are impermeable to solute and water.
Hence, urine concentration is decided by presence of ADH and interstitial gradient.
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Plz Helpp
Question 6 (1 point)
Apoptosis is:
a) Programmed cell death
b) When the cell splits into 2 after mitosis
c) Type of cancer
d) Cells growing without check points
Answer:
a
Explanation:
the death of cells which occurs as a normal and controlled part of an organism's growth or development.
In a system, the energy or material that leaves a system are referred to as the ____________.
A.outputs
B.inputs
C.components
D.processes
PLEASE HELP ME I REALLY NEED THE ANSWER
Which is the correct order of the Taxonomic Groups from broadest to more specific?
a). Domain, Kingdom, Phylum, Class, Order, Family, Species, Genus
b). Domain, Kingdom, Phylum, Class, Order, Family Genus, Species
c). Kingdom, Domain, Class, Phylum, Family, Order, Genus, Species
d). Domain, Phylum, kingdom, Class, Family, Order, Genus, Species
e. None of the above
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Answer:
hi
Explanation:
Answer:
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