Answer:
B
Explanation:
The parathyroid releases hormone that breaks down the bone to raise blood calcium level. Osteoclasts are responsible for breaking down the bone tissue.
Parathyroid hormone increases the blood calcium level by stimulating osteoclast activity, enhancing calcium absorption in the intestines, and reducing calcium loss through urine. It plays a crucial role in maintaining calcium homeostasis in the body.
Explanation:The correct option is b. increases osteoclast activity to release more calcium ions into the bloodstream. Parathyroid Hormone (PTH) is primarily responsible for increasing the blood calcium level. It achieves this by stimulating the activity of osteoclasts, which are cells that degrade bone to release calcium. Additionally, PTH indirectly increases calcium absorption in the intestines by enhancing the synthesis and secretion of calcitriol (an active form of Vitamin D) in the kidneys. This hormone also facilitates the reabsorption of calcium in the kidney tubules, thus reducing the loss of calcium through urine, further maintaining calcium homeostasis in the body.
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Loggerhead turtle populations are tracked for 5 years in the Atlantic Ocean. What type of population growth would you guess this is?
Question 6 options:
Logistic Growth
Exponential Growth
Answer:
Logistic growth
Explanation:
Logistic growth is a type of population growth whereby the rate at which the population of living organisms grow or increase in size quite rapidly.
During logistic growth, the population of organisms are studied or tracked for a period of time after which the growth rate declines due to a decrease in the availability of resources , hence the environment cannot aid in the growth of these organisms.
Describe: Imagine a rock on a beach and a rock on the side of a mountain. How
would the factors that control weathering be different for these two rocks?
Answer:
mountainside: temperature extremes have more influencebeach: wind and waves have more influenceExplanation:
It depends on what you mean by "factors that control weathering" and where the beach and mountain are located.
If we assume that the rock on the mountain is at a place that has seasonal snow, and the beach is in a temperate climate, then we can make these observations.
The rock on the mountainside will be "weathered" by freezing and thawing, and by plant growth (roots). These will tend to enlarge any cracks in the rock, breaking it apart. While the mountainside may be windy, that wind may not carry particles that would tend to erode the rock surface.
__
The rock on a beach will be most affected by wave and water action, tending to smooth any exposed surface. Freezing and thawing action is less common, due to the moderating influence of the water on the local weather. In some cases, plant growth may also be a factor. Wind may pick up beach sand, further tending to smooth any exposed surfaces.
Drag the terms to complete the concept map below. resethelp diploid organisms crossing over occurs sister chromatids separate haploid gametes maternal chromo- somes meiosis ii
Diploid organisms - Organisms that have two sets of chromosomes (2n)
Meiosis II - The second division of meiosis, resulting in the separation of sister chromatids
Crossing over - The exchange of genetic material between homologous chromosomes during meiosis
Haploid gametes - Reproductive cells (such as eggs or sperm) that contain a single set of chromosomes (n)
Sister chromatids separate - The separation of duplicated chromatids during meiosis or mitosis
Maternal chromosomes - Chromosomes inherited from the mother
Reset - It is not clear how "reset" relates to the other terms. Please provide more context or clarification.
What is do the terms describe?The terms provided convey various aspects of meiosis, a specialized cell division process that occurs in sexually reproducing organisms.
Meiosis results in the formation of haploid gametes with genetic diversity. It involves crossing over, where genetic material is exchanged between homologous chromosomes.
During meiosis II, sister chromatids separate, ensuring the proper distribution of genetic information. Maternal chromosomes refer to the chromosomes inherited from the mother.
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When did Wallace and Darwin go on their research expedition
Answer: galapagos island
Explanation:
they went here in 1835 and it allowed darwin to formulate his ideas on natural selection
Charles Darwin and Alfred Russel Wallace went on their research expeditions at different times. Darwin's journey around the world on H.M.S. Beagle took place from 1831 to 1836, while Wallace conducted his studies between 1848 to 1852 in the Amazon and between 1854 to 1862 in the Malay Archipelago.
Explanation:Charles Darwin and Alfred Russel Wallace, two significant naturalists in the mid-nineteenth century, independently embarked on their research expeditions at different times to study the principles of evolution. Darwin embarked on an expedition around the world on H.M.S. Beagle from 1831 to 1836, visiting regions including South America, Australia, and the southern tip of Africa. His journey included a significant stop at the Galápagos Islands near Ecuador, where his observance of varying beak shapes among finches contributed to his evolutionary theories.
Alfred Russel Wallace, on his part, conducted his research expedition from 1848 to 1852 in the Amazon rainforest of Brazil, collecting insects, and later from 1854 to 1862 in the Malay Archipelago. Later, in 1858, both Darwin and Wallace presented their scientific papers on natural selection at the Linnean Society in London.
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What is a visual disguise called?
Answer:
trickery.
veil.
blind.
color.
Explanation:
Biology is the study of...
Answer:
the study of life
Explanation:
Answer:
Biology is the study of life
Explanation:
Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological
List the 6 levels of ecological organization – starting with the term used for an individual living thing, and ending with the term that represents what the Earth is. How is the organism you chose in the last lesson a part of each of the levels? Example: LION- one lion is an individual; A group of LIONS are a population, etc. (6 pts)
Answer:
The six levels of organization in ecology are as follow:
1. Organism: lion
2. Population: group of lions
3. Community: lions living with others species
4. Ecosystem: community (living organisms) in conjunction with the environment (abiotic factors)
5. Biome: conjunction of several ecosystems localized in an specific area
6. Biosphere: the conjunction of the whole living organisms and abiotic factors
The 6 levels of ecological organization are: individual, population, community, ecosystem, biome, and biosphere. The chosen organism can be part of each level by its role and interactions within its environment.
Explanation:The 6 levels of ecological organization, from smallest to largest, are:
Individual: A single living thing, such as a lion.Population: A group of individuals of the same species, such as a pride of lions.Community: All the populations of different species living in the same area, such as lions, zebras, and giraffes in a savannah.Ecosystem: A community of organisms interacting with the abiotic (non-living) factors in their environment, such as the interactions between the lions, zebras, and the soil, water, and climate of the savannah.Biome: A group of ecosystems with similar climate and vegetation, such as the African savannah biome.Biosphere: The portion of Earth that supports life, including all of the biomes.The organism chosen in the last lesson can be part of each level as follows:
Individual: The organism itself is an individual.Population: The organism can be part of a population of its species.Community: The organism interacts with other organisms in its community.Ecosystem: The organism plays a role in the interactions within its ecosystem.Biome: The organism is part of a biome that provides its habitat.Biosphere: The organism is part of the biosphere, as it relies on the resources and conditions of Earth.Learn more about Ecological organization here:https://brainly.com/question/35172791
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Which piece of information provided the stimulus for the shift from traditional classification to modern
classification?
an understanding that organisms have not changed over time
an understanding that species are not related to one another
an understanding that species share a common ancestor
There is no difference between the two systems.
Answer:an understanding that species share a common ancestor
Explanation:
Took it on edge
Answer:
its C
Explanation:
cuz i passed
pH 6.5 , pH 6.0 , pH 55 , pH 5.0 pH 45 pH 4.0
3
Trout
Effect of Environmental Change on Organisms/Populations Question
(8.11B):
The graph below shows the pH tolerance level for different organisms
in a freshwater ecosystem. What would most likely happen if the pH
of the pond water dropped from 5.5 to 4.5?
Bass
Perch
Frogs
Salamanders
Clams
Select one:
Crayfish
Snails
Mayfly
O
The populations of all organisms would increase.
O
The populations of most organisms would decrease.
O
The populations of one or two organisms would decrease.
O
The populations of most organisms would not change.
Answer:
The populations of one or two organisms would decrease.
Explanation:
the fusing of egg and sperm forms a
Answer:
zygot
Explanation:
Answer:
it forms a zygote
Explanation:
fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes form a new organism.
A woman who can roll her tongue (presumably dominant) is married to a man who cannot. Two of their four children can roll their tongues and two cannot. If A = roll tongue and a = cannot roll tongue, then what is the genotype of the parents?
Answer:
50-50%
Explanation:
When will natural selection occur?
A. When there are plenty of resources
B. When there is no genetic variation.
C. When there is limited food.
D. When there is no competition
Answer:
C
Explanation:
when there is limited food, then natural selection will occur
Answer:
When there is limited food.
Explanation:
Which agent of erosion is mainly responsible for the formation of the barrier islands along the southern coast of Long Island, New York? *
A) Mass movement
B) Running water
C) Prevailing winds
D) Ocean waves
Answer:
Which agent of erosion is mainly responsible for the formation of the barrier islands along the southern coast of Long Island, New York?
Mass movement
Explanation:
Answer:
D) Ocean waves
Explanation:
Barrier islands are types of landforms that are created or formed when ocean currents which act as an agent of erosion, deposit sediments such as sands, rock particles opposite or parallel to the mainland coast.
Barrier Islands tend to be flat in shape and have dune present in them.
They help to protect the coastal areas from storms that can cause flooding and erosion.
Barrier Islands can be found along the southern coast of Long Island, New York.
When a group of foxes moves to a new environment, a change in which of the following is LEAST likely
to be a selective pressure on the foxes?!
a. Food sources
c. Decomposers
Answer:
c. decomposers
Explanation:
Blood flows from the peritubular capillary to the renal vein through this sequence of vessels. What vessel is this?
Answer:
cortical radiate vein, arcuate vein, interlobar vein.
Explanation:
which statement can be made about the evolutionary relationship between a bird and a butterfly
Answer: Birds and butterflies have homologous organs, which indicate they share a common ancestor.
Explanation:
What reasons do scientists give for saying that ciruses are not living organisms?
a.they cant reproduce without the aid of a host
b.they do not metabolize food in energy
c.they do not organize cells
d. all choices are correct
e. none of the choices are correct
True or false? The liver is a component of the alimentary canal.
Explanation:
Alimentary canal components include mouth, pharynx, esophagus, stomach, small intestine and large intestine whereas liver is a component of the accessory digestive system
The liver is a large organ that is located in the upper right portion of abdomen, beneath the diaphragm The liver has two large sections, called the right and the left lobes and the gallbladder sits under the liver, along with parts of the pancreas and intestinesThe liver and these organs work together to digest, absorb, and process foodThe liver's main role is to filter the blood coming from the digestive tract, before passing it to the rest of the bodyThe liver also detoxifies chemicals and metabolizes drugsThe liver secretes bile that ends up back in the intestines and also makes proteins important for blood clotting and other functionsA new hormone has been isolated from an organism. Although the structure of the hormone has not yet been determined, the hormone is known to exert its effects by forming a hormone-receptor complex that acts as a transcription factor within target cells. What type of hormone is this most likely to be? a peptide hormone a steroid hormone either a steroid or a peptide hormone either a steroid hormone or an amine hormone either an amine or a peptide hormone
Answer:
a steroid hormone-This is genomic pathways.
Explanation
Due to their like -dissolve -like forms steroid hormone are transported free across the phophoslipid membranes. These hormones on reaching the cytoplasm may undergo enzyme mediated alteration, and later binded with specific steroid hormone receptors.
In order to enter the cell nucleus , some of these receptors joined together as a sub unit, called a a dimer.
It is this Dimer which exist as one functional DNA binding unit that enters the cell nucleus. In the latter the steroid-receptor ligand complex binds with a specific DNA sequence to bring about transcription of the targeted gene;to complete genomic pathways.
If animals had alternation of generations like plants, ________. a) they would have twice as rapid a population growth rate as compared to their current rates b) the products of mitosis would undergo meiosis c) the products of meiosis would immediately fuse to form a zygote and then undergo mitosis d) the products of meiosis would undergo mitosis and become multicellular
Answer:
If animals had alternation of generations like plants
the products of mitosis would undergo meiosis
Explanation:
The diagram shows a forest food web.
Which organism is both a secondary and tertiary
consumer?
rabbit
TOX
grasshopper
shrew
Shrew
Snake
Mouse
Grasshopper
Rabbit
Answer:
B
Explanation:
The primary as well as secondary consumer is the fox in the diagram. Thus, option B is correct.
What are the consumers?Organisms in the food web are:
producersconsumersdecomposersProducers are the organisms which are mostly autotrophic and produce their own food by photosynthesis.
The organisms which are herbivores and eat only plant matter are primary consumers. The organisms which eat primary consumers or herbivores are called secondary consumers and organisms which feed on both primary and secondary consumers are called as tertiary consumers.
Organisms which eat dead and decaying plant and animal remains are called as decomposers.
Therefore fox is secondary and tertiary consumer. Hence, option E is correct.
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The question is incomplete, but most probably the complete question is,
Emulsion of fatty acids is necessary to _____.
a. break the intramolecular bonds
b. expose hidden bacteria in the fatty bolus
c. increase the surface area available for hydrolysis by lipase
d. trigger secretion of pancreatic enzymes
e. pass these molecules through the stomach
Answer:
c. increase the surface area available for hydrolysis by lipase
Explanation:
Emulsification of fats(fatty acid) is a chemical reaction where large molecules(globules) of fats are broken down into a smaller molecules (droplets) by the action of an emulsifier.
In the human body, emulsification takes places in the duodenum during the process of digestion of fats. When large fat molecules have been broken down into smaller fat molecules by action of an emulsifier called bile salts from the gall bladder, a larger surface area is created which makes it possible for the enzyme lipase from the pancreas to react with or act on fat molecules through the process of hydrolysis thereby converting the fats to fatty acids and glycerol for use by the body.
Answer:
Option C
Explanation:
The emulsification of fats is necessary so as to allow to easy break down of large molecules of fats into smaller droplets increasing their surface are such that enzymes like lipases can act on them, digest them breaking them down into fatty acids and glycerol to be easily absorbed by the small intestine.
Evolution is a process of in a population through variation over . Evolution involves and .
Evolution is a process of changes in a population through genetic variation over time. Evolution involves adaptation and survival.
Evolution is a gradual process of changes that occur gradually and that can be observed only through the passage of time.
Biological evolution is produced by the variation of the genetic composition, derived from the need to adapt to the environment where living beings live.Natural selection is the evolutionary mechanism that explains that the species better adapted to the environment, have a better chance of survival and reproduction, giving way to new generations.Therefore, we can conclude that evolution is a process through which species change over time.
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Evolution is a process of genetic change in a population through variation over successive generations. Evolution involves natural selection and adaptation.
Evolution is a dynamic and ongoing biological process that describes the changes in heritable traits within a population over successive generations. At its core, evolution relies on the concept of genetic variation, which arises through mechanisms such as mutation, recombination, and gene flow. Individuals within a population exhibit diverse traits due to these variations, and the differential survival and reproduction of organisms with advantageous traits lead to the process of natural selection. Natural selection acts as a mechanism that favors the propagation of traits that enhance an organism's fitness in its environment.
Adaptation is a central concept in evolution, representing the gradual adjustment of populations to their changing environment over time. As organisms with traits beneficial to their survival and reproduction are more likely to pass those traits to the next generation, the frequency of advantageous traits increases within the population.
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What does evolution involves?
Where is the blood filtered
Blood is primarily filtered in the kidneys. Kidneys contain nephrons, which filter waste and excess substances from the bloodstream, producing urine as a result. The liver also helps detoxify blood.
Blood is primarily filtered in the human body by the kidneys. The kidneys play a crucial role in maintaining the body's internal environment by filtering blood to remove waste products and excess substances. This filtration process is essential for regulating fluid balance, electrolytes, and blood pressure.
Inside the kidneys, there are numerous tiny filtering units called nephrons, each consisting of a glomerulus and a renal tubule. The glomerulus acts as a sieve, allowing small molecules like water, glucose, and waste products to pass through, while retaining larger molecules like blood cells and proteins. The filtrate, which is the filtered blood minus these waste products, then travels through the renal tubules, where essential substances like water, sodium, and other ions are reabsorbed into the bloodstream, and the remaining waste is concentrated and excreted as urine.
In addition to the kidneys, the liver also plays a role in filtering blood by removing toxins and metabolizing various substances. However, the primary site of blood filtration in the context of waste and excess substance removal is the kidneys.
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Complete question below:
Where is the blood filtered?
DNA functions in cell
Answer:
The Dna stands for deoxy ribonucleic acid. It stores genetic information so that it can be passed down to offspring. It has helpers such as mrna( messanger) and trna( transfer) to copy dna. The dna is stored in the chromosomes in the nucleus. It is a double helix shape, but rna is a single helix. The double helix's "backbone" is comprised of various combinations of the 4 base nucleotides adenine thymine, guanine and cytosine. If it's rna than thymine is replaced with Uracil.
Explanation: Science!
What did Darwin hope to learn about artificial selection by studying pigeons?
Answer:
Darwin wanted to learn whether you can possibly change the whole species fallowing that specific pigeon into a new species of pigeon.
Explanation:
Which classes of antibodies is most likely to be made by the oldest plasma cell in a population of b cells?
Options are not provided in teh question. The complete question is as following:
Which of the following classes of antibodies is most likely to be made by the oldest plasma cell in a population of B cells?
a. IgM
b. IgG
c. IgA
d. None of the listed responses is correct.
Answer:
c. IgA
Explanation:
Specialized white blood cells called B lymphocytes (or B cells) contain antibodies. The mature B cells, or plasma cells, secrete millions of antibodies into the lymphatic system and the bloodstream. The plasma cell antibodies have the exact same antigen-binding site and specificity as the precursors to their B cells. Five different types of antibodies are present in humans: IgA, IgM, IgG, IgD,IgE.
In the oldest plasma cell igA classes of antobodies are present because initially plasma cells secret IgM but it switch and forms IgG, as the plasm aget older ans switch of antibodies takes place for scond time they can make IgA or IgE.
Hence, the correct option is c. IgA.
Can alcohol and drugs cross the placenta
Answer:
Drugs in the mother's blood can cross this membrane into blood vessels in the villi and pass through the umbilical cord to the fetus. How Drugs Cross the Placenta.
Explanation:
thats why your not supposed to do drug or drink when pregnant..
are you preggo??
Answer:
Some of the fetus's blood vessels are contained in tiny hairlike projections (villi) of the placenta that extend into the wall of the uterus. The mother's blood passes through the space surrounding the villi (intervillous space). Only a thin membrane (placental membrane) separates the mother's blood in the intervillous space from the fetus's blood in the villi. Drugs in the mother's blood can cross this membrane into blood vessels in the villi and pass through the umbilical cord to the fetus.
Here's how a drug affects a fetus:
The fetus's stage of developmentThe strength and dose of the drugThe genetic make-up of the mother, which affects how much of the drug is active and availableOther factors related to the motherHope this helps and have a nice day!
A company in San Francisco uses petroleum products to make plastics. Arrange the sentences in the correct order to show how the company could be contributing to climate change.
The given question is not complete. The complete question is:
A company in San Francisco uses petroleum products to make plastics. Arrange the sentences in the correct order to show how the company could be contributing to climate change.
Put in order:
1.Burning fuel releases greenhouse gas
2.higher air temperature causes ocean water to evaporate more rapidly
3.Greenhouse gases trap solar radiation and warm up the atmosphere
4.The company burns fuels to make plastic
5.The amount of water vapor in the air rises, which further increases the air temperature
Answer:
The development of the source of energy that takes place millions of years to form by the action of temperature and pressure under the heap of sediments are known as fossil fuels. The organic matter of dead plants and animals are the raw materials needed for fossil fuel development, however, these are the non-renewable source of energy as it never is replenished once vanished.
These fossil fuels are used in enormous amounts by the industries, which liberate gases like sulfur dioxide, carbon dioxide, nitrous oxide, and other deleterious components upon burning. These gases are the major source of global warming that even contributes to climate change.
Based on the given question, the following are the steps in the correct order that contributes to climate change:
4. The burning of fuel is done by the company to produce plastic.
1. This burning of fuel discharges greenhouse gases in the atmosphere.
3. The trapping of solar radiation takes place by greenhouse gases, which eventually increases the temperature of the atmosphere.
2. This increase in the temperature of the air makes the water bodies like oceans evaporate more briskly.
5. This further results in the increase in the concentration of water vapor in the air that further elevates the temperature of the air.
If there were no decomposes, which of the following would most likely happen?
Answer:
Imagine what would happen if there were no decomposers. Wastes and the remains of dead organisms would pile up and the nutrients within the waste and dead organisms would not be released back into the ecosystem. Producers would not have enough nutrients.