The goldfish and the Pacific lamprey belong to the class Osteichthyes, or bony fishes. Sand sharks belong to the class Chondrichthyes, or cartilaginous fishes.
Pigeons and dogs belong to the class Aves, or birds, and Mammalia, or mammals, respectively. Lastly, the bullfrog belongs to the class Amphibia, or amphibians. These classes are determined based on the organisms' physical characteristics and evolutionary history. By understanding the different classes of vertebrates, we can gain a better understanding of the diversity and complexity of life on Earth.
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we can see evidence for the relatedness of humans, wheat plants, and bacteria if we compare their .
We can see evidence for the relatedness of humans, wheat plants, and bacteria if we compare their Ribosomes.
The process of making proteins in a cell takes place at an intercellular structure called a ribosome, which is formed of both RNA and protein. The messenger RNA (mRNA) sequence is read by the ribosome, which then converts the genetic code into a specific string of amino acids that develop into extended chains and fold to create proteins.
The ribosome, which functions as a cell's factory for protein synthesis, is a complex molecule consisting of proteins and ribosomal RNA molecules. Through the translational process, which has three stages: initiation, elongation, and termination, ribosomes assist in the production of new proteins.
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renal function results may be within normal limits until the gfr is reduced to less than which percentage of normal?
Renal function results may appear to be normal until the glomerular filtration rate (GFR) decreases to less than 60% of the normal range.
GFR is the measurement of the kidney's ability to filter waste products from the blood, and it is an important indicator of overall kidney function. A GFR below 60% of the normal range indicates that the kidneys are not functioning as well as they should be. This reduction in GFR may be caused by a variety of factors such as kidney disease, dehydration, or certain medications.
If left untreated, a decreased GFR can lead to chronic kidney disease, kidney failure, and even death. It is important to monitor your kidney function regularly, especially if you have a history of kidney disease, diabetes, or high blood pressure. Your healthcare provider can perform a simple blood test to measure your GFR and detect any changes in kidney function.
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Why would a scientist add a jellyfish glow gene to an organism?
A scientist may add a jellyfish glow gene to an organism to make it bioluminescent, meaning it can produce its own light.
Bioluminescence is a phenomenon found in a variety of organisms, including jellyfish, fireflies, and deep-sea creatures. The jellyfish Aequorea victoria is a popular source of bioluminescent genes due to the discovery of green fluorescent protein (GFP) in the 1960s.
GFP emits a bright green light when exposed to blue or ultraviolet light and has since been widely used in scientific research to label and track cells and proteins. By inserting the gene encoding GFP or another jellyfish glow gene into an organism's genome, scientists can make the organism produce its own light and use it for a variety of applications.
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The diagram below shows the branching tree diagram for humans. The text box below it shows the set of derived shared characteristics for the branching tree.
A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right as 1, 2, 3, 4, and 5. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Perch, Frog, Pigeon, Rats, and Human. A text box below the branching tree diagram is labeled Derived Shared Characteristics. In the box it says from left to right, Terrestrial during all stages, Jaws, Walking on two legs, Mammary glands and hair, and Four limbs.
Look at the possible derived shared characteristics, shown in the text box. Think about where these should be placed along the branching tree diagram. From the text box, select a shared derived characteristic that frogs and pigeons have. Explain why you think frogs and pigeons share this characteristic. (7 points)
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One shared characteristic that frogs and pigeons have is "Jaws." This characteristic should be placed on the line between the common ancestor and the frog, and also on the line between the common ancestor and the pigeon.
Frogs and pigeons share the characteristic of jaws because they are both vertebrates, which means they have backbones and are part of the phylum Chordata. Jaws are a feature of vertebrates and evolved early in the evolutionary history of the common ancestor.
Both frogs and pigeons have jaws that are adapted to their specific diets. For example, frogs have a wide mouth with a sticky tongue that they use to catch insects and other small prey. Pigeons have a beak that they use to crack open seeds and other food items. Despite their different diets, both frogs and pigeons rely on their jaws to obtain food and survive in their respective environments.
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not all hormones take the same amount of time to produce an effect. group of answer choices true false
True, Not all hormones take the same amount of time to produce an effect. The speed of the effect depends on the specific hormone, its target cells, and the receptors present on those cells.
Some hormones may produce an effect within seconds or minutes, while others may take hours or even days to produce an effect.
True, not all hormones take the same amount of time to produce an effect. The speed and duration of hormonal responses can vary depending on the hormone type and target cells involved.
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IHC positive for chromogranin indicates cancer of what origin?
IHC positive for chromogranin indicates cancer of neuroendocrine origin.
Chromogranin is a protein that is found in cells of the neuroendocrine system, which includes cells in the adrenal gland, thyroid gland, and pancreas, among others.
When cancer cells arise from these cells, they may produce chromogranin, which can be detected with an IHC (immunohistochemistry) test. IHC is a technique that uses antibodies to detect specific proteins in tissues, allowing for the identification of cancer cells.
Neuroendocrine tumors can be benign or malignant and can arise in various organs throughout the body. IHC positive for chromogranin is particularly useful in the diagnosis of certain types of neuroendocrine tumors, such as small cell lung cancer, neuroendocrine carcinoma of the pancreas, and carcinoid tumors.
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briefly describe intraspecific competition and explain how it differs from interspecific competition. which of the two kinds of competition is typically more intense?
Intraspecific competition refers to competition between individuals of the same species for resources such as food, shelter, and mates. On the other hand, interspecific competition refers to competition between individuals of different species for the same resources.
Intraspecific competition is typically more intense than interspecific competition because individuals of the same species have similar needs and requirements, resulting in a higher degree of overlap and competition for resources. Intraspecific competition can also lead to the development of traits that enhance an individual's ability to compete for resources, such as increased size, strength, or aggression.
Interspecific competition, on the other hand, can be less intense as individuals of different species often have different resource requirements, resulting in less direct competition for resources. However, when two species have similar resource requirements and occupy the same niche, interspecific competition can be just as intense as intraspecific competition.
Intraspecific competition refers to the competition among individuals of the same species for limited resources, such as food, shelter, or mates. It can lead to natural selection, as individuals with better adaptations are more likely to survive and reproduce.
On the other hand, interspecific competition occurs between individuals of different species competing for the same resources. This can lead to competitive exclusion, where one species dominates the resource and drives the other species to local extinction or to a niche shift.
Typically, intraspecific competition is considered more intense because individuals of the same species have identical resource requirements and are directly competing with each other, whereas in interspecific competition, different species may have varying resource needs and abilities to exploit those resources.
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