different organisms can display similar anatomical traits because they share common ancestral origin
Since Darwin's time, the study of comparative anatomy has mostly focused on bodily traits that are homologous, or those that, regardless of their current function, may be found in other species and share the same evolutionary ancestry. Such structures may have totally diverse appearances and serve distinct functions, yet they nonetheless share a common structure with an animal that was their ancestor. For instance, the forelimbs of humans, birds, crocodiles, bats, dolphins, and rodents have all undergone various evolutionary modifications to serve various purposes, but they can all be linked back to the fins of crossopterygian fishes, where that fundamental arrangement of bones initially developed. similar structures ,in this way they share common traits
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Which Sentence is true about cells?
(A) All cells do the same job
(B) All cells are the same inside.
(C) All Living things are made of cells.
(D) All living things have the same number of cells.
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory.
Do organisms of the same species share the same niche?
Which of the following scenarios can be classified as a negative feedback loop?
a increase in blood pressure to reduce heart rate
b increase in testosterone to help increase a fight-or-flight response
c increase in oxytocin caused by increased contractions
d increase in platelet production to help increase blood clotting
Answer:
The scenario that can be considered an example of a negative feedback loop is increase in platelet production to help increase blood clotting (option d).
Explanation:
Negative feedback loop is what occurs when a change occurs in the body, producing a response that decreases or stops that change, with the intention of maintaining homeostasis.
When there is a wound that produces bleeding, a series of mechanisms are activated, the coagulation cascade, which promotes the release of factors that allow the formation of clots. The increased release of platelets implies negative feedback because it helps to stop the change that occurs in the body, the loss of blood, through the formation of clots.
One thing that can cause confusion is the fact that this response also involves positive, though limited, feedback that promotes the production of clotting factors and platelets to increase clot formation. What really happens is that the positive feedback promotes the general feedback, which is the negative feedback: clot formation to stop the bleeding, restoring homeostasis.
The other options are not correct because:
a. Increase in blood pressure to reduce heart rate is not possible.
b. In the fight and flight response the hormones involved are cortisol and adrenaline, not testosterone.
c. Increased oxytocin in response to uterine contractions is positive feedback.
Answer:
A is the answer Not D
increase in blood pressure to reduce heart rate
Explanation:
what did you learn about climate change new words new ideas new conepts
Why wouldn't you use a steel core as an electromagnet?
Answer:
this is because Steel is more difficult to magnetise and demagnetise but an iron core makes a temporary electromagnet because its lose its magnetism when the switch is open and and steel core is used to make a permanent electromagnet
sustainability can be excercised in the harvesting of many different natural resources describe how t
Fishing until reaching an established quota that allows the fish population to rebound each season is a method of sustainable fishing
What is sustainability ?The main objective of sustainability is for people to live in peace and harmony on Earth for an extended period of time. Specific definitions of sustainability are difficult to agree on and hence vary in the literature and across time
Sustainability is often represented diagrammatically. The figure at the top of this page suggests that there are three pillars of sustainability – economic viability, environmental protection and social equity.Sustainability is important for many reasons including: Environmental Quality – In order to have healthy communities, we need clean air, natural resources, and a nontoxic environment. Growth - UNTHSC's enrollment continues to expand, thus we demand additional resources such as energy, water, and space.Learn more about Sustainability here:
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help asap 1st answer gets brainliest
Answer:
it looks like it is B
Explanation:
Hope this helps!! :D
Why were garden peas a good choice for a study of heredity?
Answer:
pea plants because they were easy to grow, could be bred rapidly, and several observable characteristics, like petal color and pea color.
Explanation:
Will a paper airplane with longer wings fly farther than shorter wings?
Answer:
yes
Explanation:
because pwede nya liparin hagang 10meters
Answer:
no .the shorter wings fly farther than longer wings
classify each electrolyte as an intracellular or extracellular anion (negatively charged ion) or cation (positively charged ion).
Electrolytes are substances that, when dissolved in water, conduct electricity. A variety of biological functions depend on electrolytes. They acquire a natural positive or negative electrical charge.
What is intracellular or extracellular ions?
Electrolytes are classified as both intracellular fluid and the extracellular fluid include electrolytes chemicals. The main cation and anion in extracellular fluid, respectively, are sodium and chloride.
Sodium is one of the most crucial electrolytes in the extracellular fluid because it is an active cation. It is in charge of regulating the cell's membrane potential, as well as maintaining the extracellular fluid volume.
All body tissues require the mineral potassium, which is a necessary component. Because it carries a little electrical charge that activates numerous cell and nerve activities, it is also referred to as an extracellular anion.
Therefore, electrolytes are classified as intracellular or extracellular.
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What conditions may occur when a population is in exponential growth
Answer:
some of the organisms may nit have enough food to survive bc theres not enough to go around
Explanation:
Each lunar cycle has one full moon, in which the relative positions of Earth, the sun, and the moon form in a straight line. Which list represents the position of Earth, the sun, and the moon during a full moon?
Answer:
b
Explanation:
What types of things is “medicinal marijuana” prescribed for?
Help
Answer:
anxiety
pain
Explanation:
Pain is the main reason medicinal marijuana is prescribed. It could also be prescribed to treat Crohn’s disease, Seizure disorders, nerve pain, muscle spasms caused by multiple sclerosis, or nausea from chemotherapy.
Which best describes a plasmid I’ll give brainliest pls
Answer:
Plasmids are used in biotechnology.
Explanation:
A plasmid is a natural or artificially modified circular DNA molecule for use in biological research.
The researchers use the plasmids to insert a DNA fragment of interest, thanks to the cloning cassettes. They can clone genes to express proteins or RNAs and analyze them.
Answer:
A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently. They are most commonly found as small circular, double-stranded DNA molecules in bacteria; however, plasmids are sometimes present in archaea and eukaryotic organisms
Explanation:
development of continuous flow systems to access secondary amines through previously incompatible biocatalytic cascades
The use of continuous flow reactors enabled previously inaccessible enzyme combinations in multi-enzyme cascade reactions.
The combination of oxidases with aminating biocatalysts (transaminase/reductive aminase) and was extended to the continuous in situ biocatalytic generation of amino donors for the reductive aminase.
The reaction cascades described here started with the generation of aldehydes from stable and commercially available alcohols. As aldehydes are versatile yet unstable intermediates, it was thought a continuous flow system that generated this group in situ at high concentrations could allow for a range of subsequent enzymatic modifications. Biocatalytic oxidations are fundamental in transitioning to a bio-based economy, in particular the use of oxidases which carry out selective oxidation using molecular oxygen as the sole oxidant.
For the first time it has been shown that previously incompatible enzyme cascades can be run continuously, greatly improving the metrics (up to 58-fold for STY and 4-fold for enzyme productivity) when compared to the equivalent batch reactions. This system is extremely versatile with several enzyme combinations tested that enabled the generation of a range of amine intermediates. The reactors were also extended to demonstrate proof-of-concept, high throughput reaction screening in continuous flow. A continuous synthesis of the biologically relevant molecule 4O-methylnorbelladine was also successfully demonstrated. Using a continuous approach allows many additional benefits to those discussed here to further improve biocatalytic reaction efficiency.
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What phase of the cell cycle does DNA replication occur?
a
G1
b
S
c
G2
d
M
e
cytokinesis
Answer:
s phase
Explanation:
so the genetic material can double before it begins division
Carbon credits are used to a, rehabilitate tropical rainforests b. reduce the emission of volatile organic compounds (VOC's) C, regulate how much carbon dioxide a country can emit d. coordinate carbon sequestration activities Please select the best answer from the choices provided
Answer:
C - Regulate how much carbon dioxide a country can emit
Answer:
C
Explanation:
A combination of DNA and protein molecules that exists in a loose, web-like form is known as ________.
chromosomes
histones
centromeres
chromatin
Answer:
The answer is Chromosomes
Which of the following terms describe both Osmosis and Diffusion?
Select all that apply.
Group of answer choices
Active Transport
Uses ATP
Passive Transport
Facilitated Diffusion
Moves to equilibrium
Answer:
Passive transport.
Moves to equilibrium.
Explanation:
They don't use ATP.
They are not active processes.
Passive Transport, and Moves to Equilibrium can be used describe both Osmosis, and Diffusion.
Osmosis- When a material passes through a semipermeable barrier to balance the quantities of another substance, this process is known as osmosis. Depending on the amount of a solute, such as salt, a solvent like water will often flow into or out of a cell in biology.
Diffusion- The transfer of a chemical from the a region of high concentration to one of low concentration is known as diffusion. When particles in liquids and gases collide randomly and disperse, this is known as diffusion. For living organisms, diffusion is a crucial process because it governs the passage of materials from and to cells.
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Which of the following is not a frameshift mutation?
a. a mutation in a DNA chain that occurs when the number of nucleotides inserted or deleted is not a multiple of three.
b. every codon beyond the point of insertion or deletion is read incorrectly during translation
c. a mutation in a DNA chain that occurs when the number of nucleotides inserted or deleted is not a multiple of two.
d. every codon before the point of insertion or deletion is read incorrectly during translation
A frameshift mutation would very likely cause a change in phenotype.
False
True
Answer: a false
Explanation:
The survival of a species depends on its ability to adapt to changes in the environment. A species must be capable of surviving and reproducing despite changes to food sources, climate, or threats from predators. Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment?
Mutations are always passed on to subsequent generations of the species
Mutations lead to genetic variation
Mutations are the cause of disease in the species
Mutations are not harmful when they occur in somatic cells of a species
Answer:
Your answer is B) Mutations lead to genetic variation.
Think of it like this, when rays were first starting to develop, they probably started with only one kind, stingless. Somewhere down the line, the genes of the rays started to mutate and eventually, there were stingrays and stingless rays. Now at this point there are predators that frequently feast upon the rays, so which of the two rays are more likely to defend themselves, and get away to live long enough to reproduce and pass on their genes? The stingrays! The mutation that may have occurred millions of years ago, has determined which organisms were more fit for a changing environment.
The survival of the species depends on the resources available and environmental conditions. The species or organisms capable to adapt to the surrounding have higher chances of reproduction and survival.
The correct answer is:
Option B: Mutations lead to genetic variation
The organisms adapting to the surrounding will undergo an alteration in their genetic sequence, known as mutations. The mutations are heritable and lead to genetic variation.
The mutation leads to genetic variation as:
It leads to the introduction of new alleles in the gene pool.Sexual reproduction and random mating also contribute to genetic variation. The mutations are heritable, and thus can cause an increase in the frequency of the mutated allele in the gene pool.
Thus, the correct answer is that mutation leads to genetic variation.
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What are the differences between bacteria and viruses
Answer:
Bacteria are living organisms (They show characteristics of a living organism, they respire, move and reproduce), they can live inside or outside a body.
Viruses however, do not have a cell structure. They are not considered as living organisms. Viruses invade cells and uses the cell's machinery to make replicas of itself, in other words viruses can't live outside of a body
HELP ASAP ILL GIVE BRANLIEST!!!!!
Answer:
What's ur question?
Explanation:
Answer:
You must give us a question so we can answer.
Explanation:
which societal problem can be solved,in part, by scientists identifying areas of high biodiversity
Protecting the environment societal problem can be solved, in part, by scientists identifying areas of high biodiversity.
Biodiversity- Biodiversity is all the different kinds of life which we find in one area—the variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural world. Each of these species and organisms work together in ecosystems, like an intricate web, to maintain balance and support life.
Microorganism- A living thing that can only be observed under a microscope. Protozoa, algae, fungus, and bacteria are all examples of microorganisms. Viruses are occasionally categorized as microbes even though they are not thought of as living things.
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Explain the similarities between prokaryotic and eukaryotic cells. Explain the difference between prokaryotic and eukaryotic cells.
Answer:
Prokaryotes do not contain membrane-bound organelles or genetic information within nuclei, while eukaryotes contain membrane-bound organelles and do store their DNA in nuclei. Both types of organisms may be producers and consumers
Explanation:
Cells are the basic microscopic elements of all organisms. There are two cell types: Prokaryotes and Eukaryotes.
Prokaryotic describes single-celled microorganisms that do not have a cell nucleus or other organelles surrounded by membranes. Eukaryotes are either single-celled or form complex multicellular bodies. They contain many membrane bound organelles, and their genetic information is stored within a nucleus.
Both groups may contain structures like cell walls, and carry out heterotrophic or autotrophic nutrition.
4. What is an energy pyramid? Why is there a loss of energy at each level
moving up?
Answer:
#1 An ecological pyramid is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem. And #2 Most of the food energy that enters a trophic level is "lost" as heat when it is used by organisms to power the normal activities of life. Thus, the higher the trophic level on the pyramid, the lower the amount of available energy.
Explanation:
Factors in the environment that an organisms reacts to, such as light, temperature, sound are known as.
Factors in the environment that an organism reacts to, such as light, temperature, sound are known as stimulus.
In the field of biology, a stimulus can be described as any kind of change in an environment that is perceived by the sensory receptors of an organism. In order to survive a change, the body has to produce a response to the stimulus.
When a change in the environment i.e stimulus is detected by the sensory receptors, a signal is carried to the central nervous system (CNS). The central nervous system (CNS) determines this change and sends a message through the effector motor neurons with a necessary response action.
Any change in the environment, such as a change in temperature, light intensity, or sound intensity is perceived by the sensory receptors and is a stimulus.
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Bio on edge!!!
Identify the terms using the following picture:
A purple sweet pea is shown.
-Item 1 is purple.
-Item 2 is PP.
Item 1 can be described as the ______ (genotype or phenotype)
Item 2 can be described as the ______ (genotype or phenotype)
The "p" represents _____ from one parent. (an allele or a trait)
Answer: B.) ✔ phenotype
A.) ✔ genotype
A.) ✔ an allele
the next answers are : dominant, recessive, and B.) ✔ recessive
Explanation: i hope this helps :)
Item 1 can be described as the phenotype.
Item 2 can be described as the genotype.
The "p" represents allele from one parent as shown in a purple sweet pea is shown.
What is the sweet pea?The Sweet pea has been known as the plant breed of a pea, and it has been of two types, white flower pea, and purple flower pea. Peas are green-colored, small spherical vegetables.
The Phenotype has the physical characteristics of a plant or animal that are shown in the outer and are used to identify the plant. These are color, shape, etc.
Genotypes are the genetic characteristics of a plant or animal. These characteristics are the internal traits, like growth, production, etc. They are transferred to the next offspring.
Alleles are the variations of the genes. They are of two types, dominant and recessive. These show the two characters of the same gene that are transferred in net generations.
Therefore, Item 1 can be described as the phenotype.
Item 2 can be described as the genotype.
The "p" represents allele from one parent as shown in a purple sweet pea is shown.
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What would happen if sulfur was removed entirely?
Sulfur is essential for humans, animals and plants. When it enters our body, it can be incorporated into tissues such as skin and cartilage. It is also found in some proteins and vitamins. if the sulfur were completely removed, it causes several symptoms, such as depression, neuritis, unpleasant odor in the saliva and a decrease in the brightness of the skin. To avoid this deficit, it is recommended to eat fruits and vegetables. Foods of animal origin such as milk and eggs also have it in their constitution.
What is the role of sulfur in the human body?Another great advantage of sulfur is that it has anti-inflammatory action, in addition to being an antioxidant. This means that it fights free radicals and also increases the body's defense against invading agents, preventing, for example, the flu. In addition, the mineral helps to detoxify the body.
With this information, we can conclude that Sulfur dioxide is a toxic gas that mainly affects the mucous membranes, acting on the respiratory system and eyes, causing irritation.
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DNA evidence analysis is an imperfect science. Provide two reasons why this may be the case
Answer:
Because DNA analysis requires interpretation which can have errors or mistakes because interpretations are subjective no matter how many people agree with your interpretation even if it is right.
Explanation: