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2. Types of stimuli that activate endocrine glands :Which types of stimuli affect endocrine cells? For each type, give an example.
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Answers
There are three types of stimuli that activate endocrine glands, namely, neural stimuli, hormonal stimuli, and humoral stimuli.
What are stimuli? Stimuli are environmental changes that stimulate living organisms to respond to them in order to maintain homeostasis. Organisms use stimuli to regulate and maintain their physiological systems. The endocrine system responds to various types of stimuli. Endocrine cells are triggered by stimuli to release hormones into the bloodstream.
Neural stimuli: The nervous system activates endocrine glands through neural stimuli. An action potential in a neuron stimulates an endocrine gland. An example of a neural stimulus is the stimulation of adrenal glands by the sympathetic nervous system during the fight or flight response.
Hormonal stimuli: Hormones released by other endocrine glands activate the endocrine glands in hormonal stimuli. When the hypothalamus secretes hormones that trigger the anterior pituitary gland to secrete hormones, this is an example of a hormonal stimulus.
Humoral stimuli: Endocrine cells in the pancreas are triggered by humoral stimuli. Humoral stimuli are caused by changes in the body's blood chemistry. For example, insulin is released in response to changes in blood glucose levels.
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Related Questions
The chart below lists different properties for the planets in the solar system. Use this chart to answer the following question. table of density mass and specific gravity In the table above, all mass and gravity is relative to Earth (which is why Earth is 1) and all densities are g/cm^3. Generally speaking, the [ Select ] planets have greater mass. Generally speaking, the [ Select ] planets have a greater density. The greater the [ Select ] of a planet, the higher surface gravity that planet has. Water has a density of 1.0 g/cm^3. If there was a tub of water big enough, the only planet that would float in that water is [ Select ] . All the other planets would sink. The only two planets where you would weigh [ Select ] than you do on Earth are [ Select ] and [ Select ] . On the other planets, you would weigh [ Select ] than you do on Earth.
Answers
In general, the mass of the heavier planets is higher. In general, the denser planets have higher densities. A planet's surface gravity increases as a planet's mass increases.
The density of water is 1.0 g/cm3. Saturn is the only planet that would float if there was a large enough tub of water. The other planets would all float away. Mars and Mercury are the only two worlds where you would weigh less than you do on Earth.
You would be heavier than you are on Earth on the other worlds. This is due to the fact that each planet's mass and gravity are measured in relation to Earth, which is why Earth is assigned a value of 1.
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in the meselson/stahl experiment, e. coli were first grown in media containing heavy nitrogen, 15n, and then transferred to light nitrogen, 14n at the beginning of the experiment. what fraction of the dna helices will consist of mixed dna after 4 rounds of replication?
Answers
In the Meselson/Stahl experiment, E. coli were grown in a medium containing heavy nitrogen, 15N, and then transferred to a medium containing light nitrogen, 14N, at the beginning of the experiment.
After one round of replication in the 14N medium, the resulting DNA helices had one heavy strand and one light strand, forming a hybrid or mixed DNA helix.
After two rounds of replication in the 14N medium, the resulting DNA helices were of two types: one with two hybrid strands and one with two light strands. The fraction of DNA helices consisting of mixed DNA at this stage is 1/2.
After three rounds of replication in the 14N medium, the resulting DNA helices were of three types: one with two heavy strands, one with two light strands, and two with one heavy and one light strand. The fraction of DNA helices consisting of mixed DNA at this stage is 2/4 or 1/2.
After four rounds of replication in the 14N medium, the resulting DNA helices were of four types: one with two heavy strands, one with two light strands, and two with one heavy and one light strand, and one with two hybrid strands. The fraction of DNA helices consisting of mixed DNA at this stage is 2/4 or 1/2.
Therefore, after four rounds of replication in the 14N medium, half of the DNA helices will consist of mixed DNA.
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A student wants to investigate how adding fertilizer affects the growth of flowering plants. She gathers 10 identical flowering plants and divides them into two groups of five plants. One group receives the same amount of fertilizer at the same time each day for four weeks. The other group does not receive fertilizer. All plants in both groups are kept at the same temperature and given the same amount of water and light every day for four weeks. The growth of the plants after four weeks what would be the independent variable , dependent variable, hypothesis, and 3 controls no
Answers
Independent Variable: Fertilizer
Dependent Variable: Plant Growth
Hypothesis: Giving plants fertilizer will help them grow faster than plants with no fertilizer.
Controls: Type of plant, watering routine, temperatures, amount of sunlight.
Explanation:
Independent variable always modifies the dependent variable.
Dependent variable always changes based off of the independent variable.
The hypothesis must be a statement that can be tested with an experiment.
Control variables should stay the same throughout the experiment in order for the experiment to be testable and accurate.
What term is used to describe how well an organism functions in its
environment?
OA. Selection
OB. Fitness
OC. Evolution
OD. Variation
SUBM
Answers
Answer: A. Selection
Explanation:
Please help me. I will give you branlist
Answers
Answer:
Soil erosion is a naturally occurring process that affect all landform. One uss of minerals is Copper
due to various causes, including ddt poisoning, the population size of whooping cranes was reduced to about two dozen during the 1940s. the population size has since rebounded, and there are now hundreds of whooping cranes. one would expect very low levels of genetic variation in the current populations of whooping cranes.
Answers
The phenomenon that would not be seen in the population of cranes after they rebounded the low population due to DDT poisoning is: (3) considerable genetic polymorphism.
DDT stands for Dichlorodiphenyltrichloroethane. It is a chemical that was extensively used as an insecticide earlier. However, it was banned later in majority of the countries due to its harmful side-effects on humans due to the extensive use.
Genetic polymorphism is the phenomenon where two or more form of a DNA sequence appears among a group of individuals or different populations. The most appropriate example of genetic polymorphism is the ABO blood grouping system.
The given question is incomplete, the complete question is:
Due to various causes, including DDT poisoning, the population size of whooping cranes was reduced to about two dozen during the 1940s. The population size has since rebounded, and there are now hundreds of whooping cranes. Which of the following would you NOT expect to see in whooping cranes?
very low levels of genetic variation. very few heterozygous individuals;considerable genetic polymorphism.all of the above would be seen in whooping cranes.To know more about genetic polymorphism, here
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You are watching the baseball World Series with your friends and you are amazed at how anyone can hit a fastball. You are arguing with your friends about which systems are most important in hitting the ball. Your friend said the nervous system is involved. Which statement most accurately provides evidence to help support your friend’s claim?
A.
The eyes, part of the nervous system, send messages directly to the arm muscles to swing the bat.
B.
The eye and arm, both part of the nervous system, tell the spinal cord to swing the bat.
C.
The brain and spinal cord, both part of the nervous system, direct the muscles in the arm to swing the bat.
D.
The brain, part of the nervous system, sends a message to the eyes to detect the ball and then the nerves swing the bat.
Answers
The correct option is D. The brain, part of the nervous system, sends a message to the eyes to detect the ball and then the nerves swing the bat.
What is brain?
The brain is a sophisticated organ that manages every bodily function as well as thought, memory, emotion, touch, motor skills, vision, respiration, temperature, and hunger. The central nervous system, or CNS, is made up of the spinal cord that emerges from the brain.
There are two distinct parts of the central nervous system: gray matter and white matter. Gray matter in the brain refers to the thicker, outer layer, and white matter to the thinner, inner layer beneath. This arrangement is reversed in the spinal cord, where the gray matter is located within and the white matter is on the outside.
Therefore, The correct option is D. The brain, part of the nervous system, sends a message to the eyes to detect the ball and then the nerves swing the bat.
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refer to the figure below to answer the following question. layer j is ____layer n
Answers
Answer:
I think it's younger than, not entirely sure though.
A culture medium that is contaminated with 10 10 m −3 microbial spores of microorganisms will be heat-sterilized with steam of 121 ∘ C. At 121 ∘ C, the specific death rate of the spores can be assumed to be 3.2 min −1 [1]. When the contamination must be reduced to one in 1000 fermentations, estimate the required sterilization time.
Answers
The estimated required sterilization time to reduce the contamination to one in 1000 fermentation is approximately 3.125 x 10⁶ minutes.
To estimate the required sterilization time to reduce the contamination to one in 1000 fermentations, we need to consider the specific death rate of the spores at 121°C. The specific death rate is given as 3.2 min⁽⁻¹⁾.
First, we need to determine the time required for a single spore to be completely killed. We can do this by taking the reciprocal of the specific death rate: 1/3.2 min⁽⁻¹⁾ = 0.3125 minutes (or approximately 18.75 seconds).
Next, we need to calculate the number of sterilization cycles required to reduce the contamination to one in 1000. Since the contamination is initially 10¹⁰ spores, we divide this by 1000 to get 10^7 spores.
Now, we multiply the time required for a single spore to be killed by the number of sterilization cycles needed: 0.3125 minutes/cycle x 10⁷ cycles = 3.125 x 10⁶ minutes.
Therefore, the estimated required sterilization is approximately 3.125 x 10⁶ minutes.
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Consider this animal cell.
The organelles in an animal cell are labeled. Part H is the outside layer of the cell.
Answers
The peripheral layer of a creature cell is a cell film. Part H is the outside layer of the cell is called cell membrane. Consequently, choice (A) is right choice.
What is the membrane of a cell?The cell membrane, which is also known as the plasma membrane, separates the inside of a cell from the outside world. The cell membrane is made up of a lipid bilayer that is semipermeable. The flow of substances into and out of the cell is controlled by the cell membrane.
The four primary functions of the plasma membrane are isolation of the cytoplasm from the external environment, communication, control of solute exchange across the membrane, and identification. Subsequently, the organelle marked as H is choice (A) cell layer.
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Complete question:
Consider this animal cell.
The organelles in an animal cell are labeled. Part H is the outside layer of the cell. Which organelle is labeled H?
A. cell membrane
B. cell wall
C. endoplasmic reticulum
D. nucleus
What type of muscle tissue is this
Answers
Answer:
It is skeletal muscle tissue also if you see my comment spread the word.
Explanation:
The chart below describes the effect of physical changes on water.
Heating ice Heating water Cooling water Cooling water vapor
molecular motion increases molecular motion decreases molecular motion decreases molecular motion decreases The information in the chart is incorrect under the heading?
Answers
Answer:
B. Heating Water
Explanation:
Well I said so and I am never wrong XD JK. Because the molecular motion increases and it doesn't decrease. I would go on a longer explanation but I don' have the time so mark me branliest plz. HAVE A MERRY CHRISTMAS AND A HAPPY NEW YEAR!!
The physical change of heating water increases molecular motion which is incorrectly displayed in the table.
What are physical changes?Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.
Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.
They involve only rearrangement of atoms and are often characterized to be changes which are reversible.
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What is the name of the pre-historic fossils?
Answers
Answer: I think it is coprolites.
Identify the steps of the lysogenict
Answers
Answer:
cycle:
1. Attachment: A bacteriophage attaches to the surface of a bacterial cell.
2. Entry: The viral DNA is injected into the bacterium and integrates into the host chromosome.
3. Prophage: The integrated viral DNA is known as a prophage and is replicated along with the bacterial chromosome.
4. Replication: The prophage replicates along with the bacterial DNA during cell division.
5. Induction: A trigger, such as stress or UV radiation, causes the prophage to leave the bacterial chromosome and enter the lytic cycle.
6. Lytic cycle: The viral DNA begins replicating and producing new phages, which lyse the host cell and release new viruses.
7. Release: The newly produced phages are released into the environment to find other bacterial cells to infect.
Note: The lysogenic cycle can sometimes be followed by the lytic cycle, in which the virus uses the host cell to produce new viruses, ultimately leading to lysis of the host cell.
Select the BAR CHART tab, and turn on Show numerical values. How many cells are in the interphase stage of their life cycle?
Answers
Answer:
87
Explanation:
Which of the following statements about biomolecules is true?
I. Biomolecules are the basis of life.
II. Biomolecules are involved in the metabolic processes of all living organisms.
III. Biomolecules are inorganic molecules.
Answers
2. TRUE because they involve in all the metabolic process
3.FALSE because they are organic molecules
Stem cells differentiate into a variety of specialized cell types. Stem cells in adult organisms function as repair systems. Based on this information, future research involving stem
cells will likely produce new techniques that will be used to
bbg accomplish which?
A. using stem cells to create new life forms
B. using stem cells to increase the rate of cell growth in organisms
C. using stem cells to correct DNA mismatches
D. using stem cells to cure diseases
Answers
Using stem cells to cure disease. Therefor, option (D) is correct.
Stem cells are undifferentiated cells that have the potential to develop into a variety of specialized cell types in the body. They are capable of dividing and renewing themselves for long periods of time, and under certain conditions, can be induced to differentiate into different cell types, such as muscle, nerve, or blood cells.
There are two main types of stem cells: embryonic stem cells, which are found in early-stage embryos and can differentiate into any cell type in the body, and adult stem cells, which are found in various tissues and can differentiate into a limited number of cell types. Stem cell research holds promise for developing new therapies to treat a variety of diseases and injuries.
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What is the cranial nerve that supplies most of the organs in the thoracic and abdominal cavities and also carries motor fibers to glands that produce digestive juices and other secretions?
a. Somatic motor nerve
b. Visceral sensory nerve
c. Abducens nerve
d. Vagus nerve
Answers
The cranial nerve that supplies most of the organs in the thoracic and abdominal cavities and carries motor fibers to glands that produce digestive juices and other secretions is d. Vagus nerve.
The vagus nerve, also known as cranial nerve X, is a mixed nerve that provides both sensory and motor innervation to various organs in the thoracic and abdominal cavities. It is the longest cranial nerve and has branches that reach organs such as the heart, lungs, liver, stomach, intestines, and other digestive glands.
The vagus nerve carries parasympathetic motor fibers that control involuntary functions, including the regulation of digestive activities, such as the production of digestive juices and secretions. It plays a vital role in regulating the function of the gastrointestinal tract and other thoracic and abdominal organs.
Therefore, the vagus nerve is the cranial nerve that supplies most of the organs in the thoracic and abdominal cavities and carries motor fibers to glands that produce digestive juices and other secretions.
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What poisons cause muscle weakness?
Answers
Answer:
organophosphates and Quindine Poisoning
Explanation:
2 3 4 Mark this and return H G 5 Which organelle is labeled I? F 10 Mitili A Save and Exit DELL B E C Next 57:10 Submit Sign out
Answers
In the provided diagram, where the organelle labeled "I" is the chloroplast, it signifies the presence of a crucial organelle within plant cells.
Chloroplasts are unique and essential structures responsible for the process of photosynthesis. This intricate process allows plants to convert light energy from the sun into chemical energy in the form of glucose, while also releasing oxygen as a byproduct.
Chloroplasts possess a distinctive double membrane structure. The inner membrane surrounds the stroma, a semi-fluid matrix containing enzymes, DNA, and ribosomes. Within the stroma, a system of interconnected membranous sacs called thylakoids is present. These thylakoids are organized into stacks called grana, and they contain the pigment chlorophyll.
Chlorophyll is the key player in photosynthesis as it absorbs light energy. When light is absorbed, chlorophyll initiates a series of chemical reactions in the thylakoid membranes, resulting in the conversion of light energy into chemical energy.
This energy is used to generate ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate), which are crucial for the synthesis of glucose.
Overall, chloroplasts are key organelles that enable plants to capture and convert sunlight into energy-rich molecules, ultimately sustaining life on Earth.
Their structural organization, containing chlorophyll and facilitating photosynthesis, illustrates the remarkable adaptation of plants to their environment and their vital role in global ecosystems.
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The complete question is :
Consider this plant cell.
Which organelle is labeled I?
Describe the impact
organisms in the
of a large migration of dolphins into the area. How would this directly affect other
ecosystem?
Answers
if the p53 gene was inactivated, what would the likely impact be on the cell? group of answer choices all of these dna damage could accumulate the g1/s checkpoint would not function cdk activity would not be appropriately regulated
Answers
The cell may suffer catastrophic effects from the inactivation of the p53 gene, such as DNA damage buildup, G1/S checkpoint malfunction, and deregulation of CDK activity.
If the p53 gene was inactivated, it would likely impact the cell in the following ways:
DNA damage might build up, but the tumour suppressor gene p53 works to stop cells from accumulating DNA damage. Cells may build up DNA damage if p53 is deactivated, which can result in mutations and possibly cancer.Without p53, the G1/S checkpoint would not be functional, which would compromise the cell cycle's regulation. Before the cell enters the S phase of the cell cycle, this checkpoint makes sure that the DNA has been properly duplicated. The G1/S checkpoint may not operate correctly if p53 is inactive, which could result in cells entering the S phase with DNA damage or other problems.As p53 controls the activity of CDKs, which are enzymes that control the cell cycle's advancement, CDK activity would not be properly regulated. If p53 is deactivated, CDK activity might not be properly controlled, which might result in unchecked cell growth and perhaps cancer.To know more about p53 ,
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singer and nicolson's model for the cell membrane envisioned the membrane as a fluid bilayer of lipids with an assortment of associated proteins. this model is called?
Answers
The model being referred to is called the Fluid Mosaic Model. It was proposed by S.J. Singer and Garth Nicolson in 1972.
The Fluid Mosaic Model suggests that the cell membrane is composed of a fluid bilayer of phospholipids with proteins and other molecules embedded within the layer. The phospholipids in the membrane are arranged with their hydrophilic (water-loving) heads facing the aqueous environment both inside and outside the cell and their hydrophobic (water-fearing) tails facing each other within the membrane.
This arrangement of the phospholipids allows for the membrane to be fluid and flexible, which is essential for many cellular processes such as membrane fusion and cell division. The proteins embedded within the membrane serve a variety of functions, such as transport of molecules into and out of the cell, cell signaling, and maintaining the structural integrity of the membrane. The proteins are not static but can move around within the membrane, creating a mosaic pattern.
The Fluid Mosaic Model has since been refined to include more details about the specific types of lipids and proteins present in the membrane, as well as the role of cholesterol in membrane fluidity. Overall, the Fluid Mosaic Model has been widely accepted and is still considered the most accurate model of the cell membrane.
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Name two ways that a cell would be harmed if the cell membrane were damaged.
Answers
It would hurt ut
Answer:
Damaging the cell membrane like to impact the functions of the cell because cell membrane acts as a semi-permeable membrane which allows the entry and exit of some materials in and out of the cell. If the cell membrane get damaged then the cell wall allows every molecule to enter or leave the cell without selecting the molecules. Thus, the functional properties of the cell will lost and the cell will die.
1. Science is a body of knowledge that explains the
Answers
Answer:
Science is a body of knowledge that explain the process by which that knowledge is developed.
the atom below has an incomplete valence shell
Answers
Answer:
No it actually doesn't
Explanation:
You can thank later
Conches, whelks, snails and slugs are all members of phylum mollusca. More specifically they all belong to the 2nd largest class in kingdom animalia. What is the name of their specific class within phylum mollusca?.
Answers
Conches, whelks, snails, and slugs all are members of Phylum Mollusca. They all belong to the 2nd largest class in Kingdom Animalia. The name of their specific class within Phylum Mollusca is Gastropoda.
Gastropoda is the class of Mollusca that consists of snails and slugs. They are known to have a single coiled shell or no shell at all. The members of the class Gastropoda are known for their unique body structure.
Their body is divided into three distinct parts -
headfootvisceral mass.The head contains sensory organs, including eyes and tentacles that are used to detect food and predators.The foot is the muscular structure that helps in movement. It is a long, flat, and broad structure that can be extended out of the shell.
Visceral mass contains the digestive, excretory, and reproductive systems. The class Gastropoda has over 60,000 species, which makes it the largest class in Phylum Mollusca.Their name is derived from the Greek words "gastro" meaning "stomach" and "poda" meaning "foot"
Therefore, Gastropoda can be defined as a group of mollusks with a muscular foot used for crawling and a distinctive spiral shell.
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What is found at the center of a cell?
eukaryotes
molecule
nucleus
vacuoles
Answers
Answer:
The nucleus is found at the center of the cell.
Explanation:
how to protect the water cycle
Answers
Answer:
Explanation:
The role of rainforests in the water cycle is to add water to the atmosphere through the process of transpiration (in which plants release water from their leaves during photosynthesis). This moisture contributes to the formation of rain clouds, which release the water back onto the rainforest.
Which genes are turned on or off In a nerve cell?