Answer:
Explanation:
These proteins, known as growth factors, are signals that stimulate cellular functions such as growth, proliferation, healing and differentiation. In the developing human spinal cord, BMPs are required for the formation of neurons.
In 1859, Charles Darwin proposed that differential survival and reduction of individuals would produce changes in species population over time. In other words, the environment acting on variation of individuals within a population would result in an adaptation (an evolutionary process that results in morphological, physiological or behavioral changes at the population level and that increases the probability of the members of that population to survive and their reproductive success). Using a specific example, explain how natural selection explains the theory of evolution. Also include in your explanation and within your example, what are the 4 factors needed for natural selection to act
Answer:
Reproduction, heredity, variation in fitness or organisms.
Explanation:
Evolution occurs in organisms due to natural selection process because natural resources are limited. Evolution is the change in the characteristics of a species over several generations. If evolution occurs in the organisms so these evoluted organisms can survive rate more than those organisms where no evolution occurs because the evoluted organisms can adopt successfully the features of environment. Reproduction, heredity, variation in fitness or organisms are the four factors needed for natural selection to act.
state one adaptation of nephron in the kidney of a desert mammal
Answer: The desert animals do not get appreciable amount of water quantity to survive on daily basis instead their body mechanism tries to conserve water by concentrating urine.
Explanation:
The desert mammal like kangaroo rat produces hyper concentrated urine so as to conserve water. It is facilitated by extremely long loop of Henle in their nephron. The long loop of Henle increases the time and space for absorption of water and nutrients from the urine filtrate. Hence, urine so produced is more concentrate and conserve water. Moreover, the kangaroo rat consume their urine to survive in extreme hot desert condition in scarcity of water.
How many different versions of a gene are carried in a single normal cell?
3. What part of the brain is highlighted in the diagram below? (4 points)
Frontal lobe
Occipital lobe
Temporal lobe
Parietal lobe
Answer:
Occipital lobe•^•Explanation:
The occipital lobe is the smallest of the four lobes of the cerebral hemisphere. It is present posterior to the parietal and temporal lobes. Thus, it forms the caudal part of the brain. ... The occipital lobe is primarily responsible for visual processing. It contains the primary and association visual cortex.The part of the brain that is highlighted in the image is the Occipital lobe.
What is the brain?The brain is the part of the body that controls and coordinates the activities of all other organs in the body. The brain is made of different parts that play different roles.
The part of the brain that is highlighted in the image is the Occipital lobe.
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What do you think the color of the pea plants has to do with genes?
Answer:
According to Mendel Gregor, he analyzed two plants can make a different offspring. It depends on the alleles. I hope this helped!
Explanation:
Answer:
The instructions for making a pea plant are found in its genes. Each gene has the instructions for one small part of the pea plant. There is a gene that determines the color of the peas the plant will produce. These genes can come in all different versions.
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Question 7 (2 points)
What is the phenotype of the F1 generation?
Answer:
yellow
Explanation:
So, the F1 generation all have identical genotypes, heterozygous at the seed color gene, and their phenotypes are yellow seeds.
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Answer:
The Full Moon goes with the left column box that is the 4th box down.
Explanation:
I hope this helps a little bit.
Answer:
New Moon: The fifth one
Waxing Crescent: The sixth one
First Quarter: The seventh one
Waxing Gibbous: The eighth one
Full Moon: The fourth one
Waning Gibbous: The second one
Third Quarter: The first one
Waning Crescent: The third one
A Varroa mite attaches to a honeybee and feeds on the bee's blood. However, the mite does not cause the bee to die. Which best describes the relationship between the mite and the bee?
A. Predation
B. Mutualism
C. Cooperation
D. Parasitism
Answer:
Parasitism
Explanation:
There is no mutual relationship (also meaning no cooperation, which I do not think is a type of relationship), the mite isn't "eating" the honeybee, so not predation. Therefore, parasitism, when one creature benefits at the expense of the other creature.
What are the 4 most abundant/ important elements for humans?
Answer:
The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.
Which of the following best describes the Earth's atmosphere? *
An empty space
A big blanket absorbing the Sun's heat
A thin towel that does very little to protect the Earth
A large cloud that generates the Earth's electromagnetic field
Answer:
the 4rth one
Explanation:
How does an ATP molecule release
energy for cells?
A. hydrolysis
B. breaking the bond between the 2nd and 3rd phosphate
C. removing the ribose sugar
Answer:
B
Explanation:
when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released.
The ATP molecule releases energy for cells by breaking the weak phosphate bond and converting it to ADP. This process is called A. hydrolysis.
What is the hydrolysis of ATP? Our body requires energy to perform various body activities and functions. This includes muscle contraction, digestion, transportation of molecules etc. This energy comes from the breakdown of ATP. The ATP molecule that is generated during the respiration process is broken down into ADP. This process is called the hydrolysis of ATP. The energy that is released during the breakdown of ATP is used to perform the required functions. Out of the three phosphate bonds, the weak phosphate bond is broken down to fulfil the energy needs of the body.Thus, whenever the cell requires energy, the ATP is broken down into ADP by the process of hydrolysis.
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A company called Sierra Pacific Industries is destroying forests by a destructive and non-sustainable practice called clearcutting. This is being done at an alarming rate in specific counties in California.
A.Primary Succession
B.Secondary Succession
Answer:
Secondary succession.
Explanation:
Clearcutting leaves an area barren. It is a horrible practice and is opposed by every environmental group. There are better ways of logging without destroying the plant life present there. This is secondary succession because plant life did exist in the area that clear cut and will again if the logging company or the government will replant the area.
What is the term for a structure that has no use in an organism?
A.Homologuos
B.Index
C.Vestigial
D.Sedimentary
The answer you're looking for is C. Vestigial.
Vestigial structures are structures that have no clear purpose and tend to be leftover pieces from a previous ancestor.
Hope this helps; have a great day!
I neeed please ASAP
Answer:
Option C
Explanation:
A vaccine is usually given to boost up the immune system by making them familiar with the virus
Answer:
option C
The immune system has been exposed to the polio virus so that the body responds rapidly to infections
FRAMESHIFT mutation. Explain what this means and how it affects the
protein
Explanation:
frameshift mutation is a type of mutation involving the insertion or deletion of a nucleotide in which the number of deleted base pairs is not divisible by three. ... Each group of three bases corresponds to one of 20 different amino acids used to build a protein.
genome dot gov
Which of the following best characterizes injuries to the patagium? Injuries are–
A. rare and small injuries heal well.
B. frequent due to fighting between bats.
C. not likely to heal and bats usually die from them.
D. common during birth and can contribute to infant mortality.
The one that is not best characterized as injuries to the patagium is not likely to heal and bats usually die from them. The correct option is C.
What are injuries?
A loss of consciousness may occur as a result of repeated head injury from a car accident, a falling accident, or a slipping accident. In most cases, traumatic brain injury causes loss of consciousness. The proper treatment of critical injuries is critical for overall health and well-being.
An injury is a physical harm to your body. It is a broad term that refers to injuries caused by accidents, falls, hits, weapons, and other factors. Every year, millions of people injure themselves in the United States. These injuries can range from minor to fatal.
Therefore, the correct option is C. not likely to heal and bats typically die from them.
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What would happen to one of the organisms involved in a
symbiosis if the other organism is no longer present?
Answer:
Commensalism is a symbiotic relationship in which one species benefits while the other is not affected.
Explanation:
The organism of the ecosystem like the plants and the animals along with the microorganisms are connected and interlinked with one another through the ecological relationship. The relation could be positive, negative or neutral.
What is symbiotic relation?Symbiosis is an ecological relationship in which the organisms lives together and they both or a single organism is benefitted from the other.A symbiotic relationship in the ecosystem can be positive, neutral or negative and is of various types like commensalism, competition and parasitism.If the organism is removed from the symbiotic relationship then the factors like the shelter, food, locomotion etc. of the other organism can be affected adversely.Thus, symbiosis is important for the ecosystem.
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Systematists use several fundamental criteria to assign animals to phyla. Check all of the criteria that systematists would use to classify animals under specific phyla. Check All That Apply Feeding behaviorFeeding behavior Adult body symmetryAdult body symmetry Ultimate adult body sizeUltimate adult body size The embryological formation of body cavitiesThe embryological formation of body cavities Biogeographic distributionBiogeographic distribution Gene sequencesGene sequences The number of tissue layersThe number of tissue layers
Answer:
The correct answer is -
Adult body symmetry
The embryological formation of body cavities
Gene sequences
The number of tissue layers
Explanation:
Scientists and taxonomists use different criteria to assign different animals to particular phyla. The various systematic criteria that are used more frequently by systematists are as follows:
1. Adult body symmetry
Body symmetry is one of the criteria used to assign an organism or animal to a particular phylum. There is two symmetry found in animals radial and bilateral. If any plane passes through the middle axis and divides into two identical segments called radial symmetry and Bilateral symmetry is where only a single plane divides the body into halves. However, there are many animals that do not have any symmetry and called assymetrical.
2. The embryological formation of body cavities
Other than layers body cavities also helps in assigning the animals that depend on coelom - body cavity between the body wall and gut wall
Animals could be - coelomate(coelom present), pseudocoelomate -(not lined with mesoderm) and acoelomate(coelom absent).
Gene sequences
Genetic similarities also consider and how close an organism to their organism of the phylum or species.
The number of tissue layers
Different body parts, tissues, muscles, and organs developed from the different cell layers that are formed during embryo, therefore, called embryonic layers.
Animals on the basis of these embryonic layers could be diploblastic or triploblastic. Diploblastic animals form 2 embryonic layers the outer and inner layers called the ectoderm and the endoderm respectively. Triploblastic animals have an extra middle layer known mesoderm.
where is 70s type of ribosomes found in eukaryotic cells?
Answer:
All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol. The 70S ribosome is made up of a 50S and 30S subunits. Ribosomes play a key role in the catalysis of two important and crucial biological processes.
If there is a piece of metal will it still be attracted to the magnetic even if it is outside of the magnetic field? Will the magnetic field line connect to the object?
Answer:
It will still attract.
Explanation:
When you think of it, when some of us were little we used magnets and played with them and would do a "magic" trick. We would put a magnet underneath the table and one on top and move the one underneath which would move the one on top without us touching it.
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Question 3 (2 points)
What is the phenotypic ratio of the F2 generation?
Answer:
9:7
Explanation:
We get the dominant phenotype in plants that have at least one dominant allele of EACH of the two genes; otherwise, we get the recessive phenotype. So, the observed ratio in the F2 generation is 9:7.
How did the research of Miller and Urey contribute to the hypotheses about the origins of life on Earth?
Answer:
Miller and Urey's research showed that it was possible for organic molecules to be developed from inorganic molecules, which contributed to the hypotheses about the origin of the earth.
Explanation:
Stanley L. Miller and Harold C. Urey developed a series of research and experiments that showed that the planet earth, even in its primitive state, promoted a series of chemical reactions that used inorganic substances as a reagent, to create organic substances as a product and these organic compounds were the precursors of life on earth.
To reach this conclusion, they used a closed system, without the presence of oxygen, but with the presence of hydrogen, ammonia, methane and water vapor. They subjected this system to various cycles of electrical discharges, heating and condensation of the page, to create environments in which chemical reactions could happen. After some time, it was possible to observe the presence of organic molecules.
plants that posses plant organs are called?
A symbiotic relationship in which one species benefits and the other is harmed is known as mutualism. predation. commensalism. parasitism.
Answer:
Parasitism
Explanation:
Example: Mosquitoes feed off the blood of a human and is benefitted, the human is harmed because the mosquitoe exposed he/she to malaria.
A symbiotic relationship in which one species benefits and the other is harmed is called parasitism. The parasite lives on the food of the host. Fourth option is correct.
What are different types of symbiotic associations?In symbiosis, two organisms are present in close contact. There are different types of relationships seen in nature, such as mutualism, commensalism, parasitism, etc.
Mutualism occurs when two organisms, such as lichen, benefit from one another. Lichen is an association of algae and fungi. Algae makes food that is consumed by fungi, and fungi provide algae for a place to live.
In parasitism, one is the host, and the other is the parasite. An example is the tapeworm in the human intestine. Tape worms consume digested human food and harm humans by spreading their population. Here, the host is negatively impacted by the presence of parasites.
In predation, both are harmed as both are involved in the fighting. In commensalism, one party gets benefits while the other is not harmed by the association.
Hence, the fourth option is the correct answer, which is parasitism.
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What industry is related to the production of plastics?
Answer:
chemical industry
Explanation:
The plastics industry manufactures polymer materials—commonly called plastics—and offers services in plastics important to a range of industries, including packaging, building and construction, electronics, aerospace, and transportation. It is part of the chemical industry.
What are some indirect changes on Earth from Climate Change
(Greenhouse Emissions)?
a. Coral Bleaching
b. Ocean Acidification
c. Sea Level Rise
d. All of the above
Answer:
The answer is D.All of the above
Answer:
D
Explanation:
1: Coral Bleaching happens when 2 to 3 degree temperature changes.
2: carbon dioxide (CO2) in the atmosphere is being absorbed at the surface of the ocean at an increasing rate. This excess CO2 results in more hydrogen ions, which increases the acidity of the ocean.
3: sea level rise happens when ice caps or glaciers melt.
4: it's all of them
What is the difference between national legislation and international treaties
Answer:
The main difference between international and national law is that international law regulates external relations between two or more countries by the signing of treaties and agreements concerning trade, war, the sea or oil, whilst national law or domestic law is applied within the boundaries of a country
Why do hurricanes lose strength when they move over land?
A.) There is no longer a source of warm, moist air.
B.) There is not enough energy coming from the Sun.
C.) Evaporation and condensation cannot take place over land.
D.) The winds on the land cancel out the winds of the hurricane
Answer: c.
Explanation:there is no water the hurric can absorb
The Mexican horn shark has
fins and spines b/c it feeds on...?
Answer:
Explanation:
They feed on benthic invertebrates, especially sea urchins, crabs and probably abalone, also fishes.
