The birds shown above have beaks with three different shapes and sizes. The genetic variations on the beak each appeared initially due to
Answer 1- mutations
Look at the three beaks which flock's birds have beaks that seem most likey to Pierce a piece of fruit?
Answer 2-Flock X
Suppose that s plant disease kills all fruit. The change could become a
Answer 3- selective pressure
Check all possible effects of this selective pressure
Answer 4- 1, 2, 3, and 4 are true.
Flock x may try to eat other foods -True
Flock x could migrate in search of fruit -True
Flock Y and Z could benefit and increase- True
Flock x could try to mutate- False
The _____ theory suggests that the interstellar dust within a nebular cloud is the most important component of planet formation.
nebular
condensation
comet
big bang
The answer is Condensation.
Who is the father of binomial nomenclature
al proceso en que el cristalino se aplana o redondea para realizar un enfoque correcto se le llama
Which situation would NOT encourage competition?.
during transcription, is the original sequence maintained in the new strands? explain why or why not
During transcription, RNA polymerase synthesizes RNA complementary to DNA, maintaining sequence with modifications (e.g., T to U substitution).
1. During transcription, the original sequence of DNA is maintained in the newly synthesized RNA strands with certain modifications:
2. RNA polymerase binds to the DNA template and synthesizes a complementary RNA strand, following the rules of base pairing (A-U, G-C).
3. While the overall sequence is maintained, there are some differences:
4. Thymine (T) in DNA is replaced by uracil (U) in RNA.
5. Transcription may not cover the entire DNA sequence; only specific regions (genes) are transcribed into RNA.
6. Additionally, RNA processing, such as splicing and post-transcriptional modifications, can alter the final RNA sequence.
7. Despite these modifications, the essential information encoded in the DNA, such as the sequence of amino acids in a protein, is preserved in the newly synthesized RNA.
8. Therefore, while the exact nucleotide sequence is not identical, the fundamental genetic information is conserved throughout transcription.
Which of the following is a good place to find sources for research?
Which of the following is a true statement about cellular respiration?
A. Cellular respiration occurs only in plant cells.
B. Cellular respiration occurs only in animal cells.
C. Cellular respiration occurs in both plant and animal cells.
D. Cellular respiration occurs in some plant cells and some animal cells.
Answer:
The correct answer would be C. Cellular respiration occurs in both plant and animal cells.
Cellular respiration refers to the set of biochemical reactions involved in harnessing the energy from the nutrients in the food and convert it into more usable form that is, adenosine triphosphate (ATP).
ATP is then used for all the vital processes of the cell such as replication of DNA, transcription, repair et cetera.
It takes place in all the cells of both plants and animals. In both, most of reactions associated with cellular respiration take place in mitochondria.
which question cannot be tested with a scientific investigation?
Are people who drink tea, happier then others who don't,, thats the answer.
A scientist observes the ocean tides moving large amounts of sand from one part of the beach to another. This is evidence for which type of natural process? Physical weathering ,Chemical Weathering ,Erosion ,Deposition
Answer:
De-o-po-si-ti-on
Explanation:
As the world population continues to rise, the demand for energy also continues to rise. Which type of fuel does little to pollute Earth's atmosphere?
Nuclear because, its nuclear.
Dense Denise is an emergency room nurse at Hopeless Hospital. She notices that the hospital is running short on blood, so she decides to dilute the blood with water to make it last longer. Later, Dr. Dingo, the attending physician gets ready to give a patient a transplant. As a precaution, he puts a sample under the microscope, sees this image. He immediately begins angrily barking at Denise. What happened to the blood cells? A) The blood cells burst because they were placed in water, a hypotonic solution. B) The blood cells burst because they were placed in water, an isotonic solution. C) The blood cells burst because they were placed in water, a hypertonic solution. D) Denise did not dilute the blood enough, causing the cell walls to collapse onto the blood cells and make them burst.
Here, the core answer is that the blood cells burst because they were placed in water, a hypotonic solution. That is, in Option A, as the blood cells are placed in a hypotonic solution, such as pure water, the concentration of solutes outside the cells is lower than the concentration inside the cells.
What happens when the shape of a blood cell changes ?Blood cells are surrounded by a selectively permeable membrane that controls the movement of substances in and out of the cell. The movement of water across this membrane is influenced by the concentration of solutes (ions and other dissolved substances) on either side of the membrane. If the concentration of solutes is higher outside the cell than inside, water will move out of the cell in an attempt to equalize the concentration of solutes on both sides of the membrane. This can lead to cell shrinkage, known as crenation.
Hence, Here, the core answer is that the blood cells burst because they were placed in water, a hypotonic solution. That is, in Option A
Learn more about the blood cell and its shape changes here.
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Which example is a way that predators actually benefit their prey populations?
predators never benefit prey populations
predators eliminate weak individuals and keep prey populations strong
predators always eat the strongest individuals in prey populations
predators transmit disease in prey populations
Answer:
A
Explanation:
which is the animal that live for 100years
The semicircles on the symbol for a warm front indicate _____. A The air pressure B the temperatureC the direction of motion D the slope of the front
Answer:
C. The direction of motion.
Explanation:
In which interaction is the host harmed? Commensalism Competition Mutualism Parasitism
It is 100% Parasitism.
Parasitism is a relationship between two organisms were one organism, or the parasite feeds at the cost of the other organism or host. Ticks and dogs, these are two things a pet owner dreds to see. The tick is considered the parasite because it can get on to a dog and carries diseases with it. One disease is called the Rocky Mountain spotted fever, this can be harmful to the dog and can have it become very ill.
If fish populations in the Antarctic were to decline, what would be the best way for the smaller toothed whales to adapt?
Question 5 options:
eat more baleen whales
eat more penguins
eat more phytoplankton
eat more leopard seals
Answer:
Beat more baleen whales
Explanation:
Smaller toothed whales are secondary
consumers of fish. If the fish population declined, the populations of leopard
seals, elephant seals, and penguins; animals which make up a large portion of
the whales' diet; would likely also decline.
To survive, the smaller toothed whales would have to eat more animals that feed
primarily on krill instead of fish, such as seals (not leopard or elephant
seals) and baleen whales.
Answer: B
Explanation:
1. Hydrochloric acid is used to produce fertilizers and dyes, to pickle and clean metal products, and as a reagent in the photographic and rubber industries. what are chemical properties of hydrochloric acid
Answer:
Hydrochloric acid reacts with zinc metal to produce hydrogen gas, zinc chloride, and heat.
Explanation:
The chemical properties of hydrochloric acid are monoprotic which can donate only one proton (H+). In water which completely dissociates to form hydrogen and chloride ions.
What is Hydrochloric Acid?Hydrochloric acid also known as muriatic acid is an aqueous solution of hydrogen chloride. It is a colorless solution with a characteristic pungent odor that is classified as a strong acid and is a component of gastric acid in the digestive tract of most animal species, including humans.
Physical properties such as the boiling and melting points, density, and pH of hydrochloric acid depend on the concentration of hydrochloric acid in water. It is colorless with a very pungent odor.
The reason hydrochloric acid dissociates into hydrogen and chloride ions is because it is a polar covalent compound and therefore ionizes when it is added to water.
Thus, the chemical properties of hydrochloric acid are monoprotic which can donate only one proton (H+). In water which completely dissociates to form hydrogen and chloride ions.
Learn more about Hydrochloric Acid, here:
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Oxygen is more reactive than nitrogen.
True
False
Answer:
true
Explanation:
what are the benefits of mitochondrial DNA and ribosomal RNA as molecular clocks
there is no benefits
Answer:
The rate of mutation is faster than that of nuclear DNA.
Explanation:
Molecular clock is a term used to describe the genetic technique that allows the study of evolution at the molecular level, relating the time of divergence between species compared to the molecular differences in DNA sequences or in the composition of proteins.
In this case, the DNA of the mitochondrial and that of the ribosome is more advantageous to be used as a molecular clock. This is because the rate of mutation of these DNAs is much higher than the rate of nuclear DNA. This allows the researcher to identify many polymorphic regions that were generated in an evolutionary process of millions of years. As the mutation rate is constant, the large number of polymorphisms in these DNAs make them the best option as biological clocks
does anyone know this answer????
Why doesn't the Moon move away from Earth? Its orbit is too small. Its inertia is too strong. Earth's gravity is strong. Earth's gravity is weak.
How do temperature and salinity affect deep water currents?
Differences in the density of water can also cause currents to form and move. Density is affected by temperature and salinity. Cold water or water with dissolved salts (higher salinity) is denser than warm water or water without dissolved salts (low or no salinity).
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Discuss the importance of oxygen to all living organisms, and describe how three different organisms—human, flatworm, and fern—obtain the oxygen they need.
Oxygen is essential for aerobic organisms, and humans, flatworms, and ferns have evolved different methods to obtain it: humans use lungs, flatworms rely on diffusion through their skin, and ferns utilize stomata on their leaves for gas exchange.
Explanation:Oxygen is crucial for the survival of all aerobic organisms as it is essential for carrying out metabolic functions. Different organisms have evolved various mechanisms for obtaining oxygen, depending on their size, shape, and habitat. Larger organisms require specialized respiratory systems due to the increased diffusion distance and the decreased ratio of surface area to volume that comes with a larger body size.
Humans obtain oxygen through their well-developed respiratory system which includes the lungs and respiratory passages. Oxygen is inhaled into the lungs, where it diffuses into the bloodstream and is then transported throughout the body.
Flatworms have a simple body plan that allows for oxygen to be obtained directly through diffusion across their skin, suitable for their small size and flattened shape.
Ferns, being plants, use their leaves to absorb oxygen from the air at night and also produce it during the daytime via photosynthesis. They have pores called stomata that open and close to regulate the intake of carbon dioxide and the release of oxygen.
Control of (blank) synthesis is the key to controlling the chemical pathway of the cell.
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illustration shows the process of making a protein molecule. The site of protein synthesis in a cell is the ______________
Answer:
c
Explanation:
stars are bright balls of gas that are trillions of miles away from earth
T OR F
10 POINTS!!!!! Do you think cell division stops after a new baby is born? Why or why not?
Using the information gleaned from "Your Stress Scale", please state what your score is and write a brief statement pertaining to your score and to your stress level.
Answer: My score is 10/10 because work overload, few hours of sleep, and lack of time to finish university work.
Explanation: