Answer:
Oxytocin
Explanation:
Positive feedback mechanism is the one by which the changes leads to more changes of same type.
During child birth, the head of the baby is pressed against the cervix which in turn send the nerve impulses to brain. Brain makes the pituitary gland to secrete the hormone oxytocin. Oxytocin is released in blood and causes the uterine contraction. As labor continues, more stimulation of cervix and intense uterine contractions lead to more release of oxytocin.
Using the variable v,d and t, write the correct formula for T.
Which describes step three of a muscle contraction?
The answer is Actin and myosin are completely overlapped.
Good luck :)
if the surface area of a cell that is shaped like a cube increases 100 times, its volume increases about
Answer:
D. 1000 Times.
Explanation:
Did the check.
which of the following structures is made up mostly of water
When a sucrose molecule is digested which monosaccharide are produced
The following life cycle stages do both complete and incomplete metamorphosis of insects have in common is adult. Thus, option B is correct.
What is larva?
Larva" is a stage in the life cycle of an insect among the following choices given in the question that a caterpillar represents. A Caterpillar represents the larva stage in the life cycle of an insect. The Caterpillar is most specifically Butterfly Larva. In this stage of the Butterfly life cycle, the Caterpillar spends most time eating, growing and shedding their exoskeleton.
Life cycle stages do both complete and incomplete metamorphosis of insects have in common is adult. A Caterpillar represents the larva stage in the life cycle of an insect. The Caterpillar is most specifically Butterfly Larva. Larva" is a stage in the life cycle of an insect among the following choices given in the question that a caterpillar represents.
Therefore, The following life cycle stages do both complete and incomplete metamorphosis of insects have in common is adult. Thus, option B is correct.
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what is the process where rocks gas and dust collided to form the planets in our solar system including earth
Accretion is the process where rocks, gas, and dust collided to form the planets in our solar system including earth.
Accretion is the process in which particles such as dusts, gases, and rocks are accumulated in an accretion disk under the influence of gravitation to form massive objects. This process bring about the formation of most astronomical objects, such as stars, planets, and galaxies.
Some species of organisms can reproduce either asexually through mitosis or sexually, which requires meiosis. In which of the following situations would it be the least beneficial for a species to reproduce asexually rather than sexually?
a. one in which potential mates are difficult to find
b. one in which resources such as food and water are abundant
c. one in which the environment undergoes sudden, drastic changes
d. one in which the species is not capable of locomotion ...?
Correct answer: C). One in which the environment undergoes sudden, drastic changes
Asexual reproduction is defined as a mode of reproduction, in which only one parent is responsible for carrying out the process of reproduction, it do not involve fusion of female and male gamete.
As the offspring that results from the asexual reproduction have same genetic makeup and physical appearance, it means they do not have any variation, so in the case of sudden changes they are not able to survive and cope up with the changes.
Hence, the correct answer would be option C.
Asexual reproduction would be least beneficial in situations where the environment undergoes sudden, drastic changes because genetic diversity, achieved through sexual reproduction, is crucial for dealing with changing environmental conditions.
Explanation:Asexual reproduction, such as mitotic budding, fragmentation, or producing asexual eggs, allows a species to rapidly expand in number because every individual is capable of reproducing, and it doesn't require the energy expenditure of finding a mate; however, sexual reproduction, through meiosis, provides genetic diversity, which can be critically important when facing environmental changes.
In the scenario where the environment undergoes sudden, drastic changes, reproducing asexually would be the least beneficial. This is because asexually produced offspring are genetically identical to the parent, and in a dramatically changing environment, genetic diversity would enhance the chances of survival of some offspring. Thus, sexual reproduction would be more advantageous in such situations.
In contrast, asexual reproduction is most advantageous in stable environments where a successful parent's traits would likely lead to successful offspring without the need for genetic variation to cope with changes.
Describe an organism that uses each of the following:
Aerobic Respiration-
Anaerobic Respiration-
Lactic Acid Fermentation-
Alcoholic Fermentation-
Organisms that undergo Aerobic Respiration include humans and yeast in oxygen-rich environments. Anaerobic Respiration is employed by some bacteria like Shewanella when oxygen is absent. Lactic Acid Fermentation is used by muscle cells in humans and Lactobacillus in yogurt production, while Alcoholic Fermentation is seen in yeast during beer brewing and bread making.
Explanation:Aerobic Respiration occurs in many organisms, including humans. In this process, cells use oxygen to convert glucose into ATP, carbon dioxide, and water. An example of an organism that uses aerobic respiration is the common yeast species Saccharomyces cerevisiae under oxygen-rich conditions.
Anaerobic Respiration is used by certain bacteria that can make ATP without oxygen. These include some species of bacteria in the genus Shewanella, which can utilize other inorganic compounds as final electron acceptors when oxygen is not available.
Lactic Acid Fermentation occurs in muscle cells of animals, including humans, when oxygen is scarce, such as during intense exercise. In this process, glucose is converted into ATP and lactic acid. Lactic acid bacteria, like Lactobacillus, also use this process to ferment milk into yogurt, for example.
Alcoholic Fermentation is used by yeast and some types of bacteria to convert glucose into ATP, alcohol, and carbon dioxide in the absence of oxygen. An example of an organism that undergoes alcoholic fermentation is Saccharomyces cerevisiae when oxygen is not present, such as during the brewing of beer and the making of bread.
Final answer:
Aerobic respiration occurs in humans, while yeast undergoes anaerobic respiration, specifically alcoholic fermentation. Bacteria in yogurt use lactic acid fermentation, and yeast also undergoes alcoholic fermentation.
Explanation:
Aerobic Respiration:
An organism that uses aerobic respiration is humans. During aerobic respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide, water, and energy in the form of ATP. This process is more efficient than anaerobic respiration and allows for the production of a larger amount of ATP for cellular activities.
Anaerobic Respiration:
An example of an organism that uses anaerobic respiration is yeast. During anaerobic respiration, glucose is broken down in the absence of oxygen to produce carbon dioxide, alcohol or lactic acid, and a small amount of ATP. Yeast undergoes alcoholic fermentation, which produces ethanol as a waste product.
Lactic Acid Fermentation:
An example of an organism that uses lactic acid fermentation is bacteria found in yogurt. During lactic acid fermentation, glucose is converted into lactic acid and a small amount of ATP is produced. This process is utilized by bacteria to produce yogurt and other fermented dairy products.
Alcoholic Fermentation:
As mentioned earlier, yeast undergoes alcoholic fermentation. Yeast converts glucose into ethanol and carbon dioxide during alcoholic fermentation. This process is used in the production of alcoholic beverages such as beer and wine.
Which of the following statements is true? The buildup of carbon dioxide in the atmosphere causes the greenhouse effect. An increase in pressure causes an increase in reaction rate. The formation of gas bubbles is an indication of a chemical change. all of the above
D- All of the above I think
If a blood vessel has valves, it probably is a
What is the best example of water regulating an organism’s body temperature?
OPTION A: a jogger sweating after a run.
Water regulates body temperature in organisms through its high heat capacity, which aids in thermoregulation and maintaining homeostasis. The water in organisms' bodies transports heat and helps keep their internal temperature steady even in differing external temperatures.
The best example of water regulating an organism's body temperature is the process of thermoregulation, where water's high heat capacity plays a crucial role. Due to its ability to absorb and retain heat, water allows organisms to maintain a stable internal body temperature. Just as humans do not experience a drastic drop in body temperature while skiing or playing in the snow, warm-blooded animals utilize water to disperse heat evenly throughout their bodies, akin to a car's cooling system, facilitating the maintenance of an even temperature.
In cold climates, organisms like the polar bear possess insulating features such as fur, feathers, blubber, and fat to conserve heat, while in hotter environments, mechanisms such as perspiration in humans or panting in canines are employed to release excess body heat. Homeostasis, the maintenance of stable internal conditions, is critical for cellular function and organism survival, especially under varying environmental conditions.
If r-organisms reproduce at such a high rate, why don’t they usually reach their carrying capacity? If an r-population is moved into an environment where it has no predators and it is left there for a very long period of time, what might eventually happen to the population’s reproduction strategy?
sediments form from the process of ___________
fill in the blanks
Sediments form from the process of weathering and erosion, which involves the breaking down of rocks and minerals and the subsequent movement of these particles to a new location where they accumulate and harden to form sedimentary rocks.
Explanation:Sediments form from the process of weathering and erosion. This process primarily involves the breaking down of rocks and minerals on Earth's surface through physical factors like temperature changes, wind, water, and ice. Once these elements have broken down, erosion takes place which involves the movement of the broken pieces, often due to the action of wind, glaciers, or water bodies. These small fragments of rock are carried by natural forces and settle or deposit in a new location. Over time, these deposits accumulate and harden, often with the help of minerals, and form what are known as sedimentary rocks.
For example, sandstone is a common type of sedimentary rock that forms from sand, which itself is a sediment formed from the weathering and erosion of other rocks. Similarly, fossils can be found within certain sedimentary rocks representing the ancient remains of plants and animals that were trapped within the sediments that later hardened into rock.
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What kind of organisms perform photosynthesis
Plants, algae, and some types of bacteria are the organisms that perform photosynthesis.
What kind of organisms perform photosynthesis?Photosynthesis is the process by which organisms convert light energy into chemical energy, typically using sunlight, carbon dioxide, and water.
Plants, including trees, flowers, and grass, are the primary photosynthetic organisms.
Algae, which are simple, plant-like organisms found in aquatic environments, also perform photosynthesis.
Additionally, certain bacteria, such as cyanobacteria, are capable of photosynthesis. These organisms contain chlorophyll or other pigments that enable them to capture light energy and convert it into chemical energy through the photosynthetic process.
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1. Which of the following is NOT part of John Dalton's atomic theory? (1 point)
A. All elements are composed of atoms.
B. All atoms of the same element have the same mass.
C. Atoms contain subatomic particles.
D. A compound contains atoms of more more than one element.
2. Who provided evidence for the existence of a nucleus in an atom? (1 point)
A. John Dalton
B. J. J Thomson
C. Democritus
D. Ernest Rutherford
the atoms, elements, and bonds practice answers are
1.C
2.D
3.D
4.D
5.D
6.B
7.B
8.D
hope this helps
____ are organisms that get their energy from
2x+y=−8x−y=−4{2x+y=−8x−y=−4
(−1, 3)(−1, 3)
(−4, 0)(−4, 0)
(−3, −2)(−3, −2)
(1, 5)
What is the function of a cells selectively permeable plasma membrane?
It allows some molecules to enter the cell and blocks entry to others
explain why animals have specialized excretory organs but plants do not. ...?
Answer:
animals are active than plants
Explanation:
i hope my answer has helped
Jamie is reviewing a new diet plan that involves purchasing pre-packaged meals and taking a patented energy supplement. In an ad explaining how it works, Jamie reads about a study cited as evidence supporting the effectiveness of the plan. In the study, two groups were followed: one following the plan and another following a simple low-carbohydrate diet. What should Jamie look for in the study to have full confidence in its scientific reliability?
Answer
A comparison of the plan to a variety of diets
A list of differences between the two diets in the study
Details o ...?
Answer: d. Details on the number of studies conducted and the results of each trial
Explanation:
With details and results from multiple differerent trials and studies, you are more likely to find a good source of reliabilty if you find similiar or the same answers from your research.
To have full confidence in the scientific reliability of the study, Jamie should look for a comparison of the plan to a variety of diets, a list of differences between the two diets, details on the study design, and evidence of peer review.
Explanation:In order for Jamie to have full confidence in the scientific reliability of the study, they should look for several key factors:
A comparison of the plan to a variety of diets, not just one simple low-carbohydrate diet. A list of differences between the two diets being studied Details on the study design, such as the sample size, duration of the study, and any statistical analyses conducted. Evidence of a peer review process, indicating that the study was evaluated by other experts in the field.
By considering these factors, Jamie can assess the reliability and validity of the study and make an informed decision about the diet plan.
the temperature to which a mass of air must cool in order to be saturated is the____?
Correct answer would be Dew Point of Temperature
Dew point of temperature is defined as the temperature at which the air must cool in order to become saturated.
At normal conditions of temperature and pressure, the dew point of temperature will not be more than the air temperature because relative humidity cannot be 100 percent. It the temperature is lower than its dew point, then it is called as supersaturated.
Thus, the correct answer would be Dew point.
The temperature to which a mass of air must cool in order to be saturated is the dew point temperature.
The dew point is the temperature at which the air becomes saturated with water vapor, meaning it reaches 100% relative humidity.
As the air cools, its ability to hold moisture decreases, and once it reaches the dew point temperature, condensation occurs, leading to the formation of dew, fog, or clouds.
Understanding the dew point is crucial in weather forecasting as it helps meteorologists predict the likelihood of precipitation, fog formation, or the potential for thunderstorms.
Monitoring the dew point temperature provides valuable insights into atmospheric moisture content and weather conditions.
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Which of a cell's organelles releases energy stored in food?
Answer: mitochondria
Which of the following is not a colligative property?
a. viscosity
b. osmotic pressure
c. vapor-pressure lowering
d. freezing-point depression?
Among the mentioned choices, viscosity is not a colligative property. This is because colligative properties depend on the concentration of solute whereas viscosity is influenced by intermolecular forces.
Explanation:Colligative properties are properties of solutions that depend on the concentration of dissolved particles, not their specific type. The colligative properties include osmotic pressure, vapor-pressure lowering, and freezing-point depression. However, viscosity is not considered a colligative property because it does not depend on the concentration of the solute but rather on the intermolecular forces present in a substance. In essence, viscosity is the measure of a fluid's resistance to flow.
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Which statement is correct?
The number of electrons of a neutral atom always equals the number of protons.
The number of neutrons always equals the number of protons.
The number of neutrons always equals the number of electrons.
Atomic weight is identical to atomic mass.
Answer:
Option (1).
Explanation:
Atom may be defined as the small part of an element that can be further divisible into the further particles. The three sub atomic particles are electron, proton and neutron.
Electrons revolve around the nucleus and protons, neutrons are present inside the nucleus. The electrons and protons number are equal in the neutral atom. The equal number of electron and proton makes the atom electrically neutral as whole.
Thus, the correct answer is option (1).
What condition may arise if the pituitary glands is not producing enough growth hormones?
Answer:
growth hormone deficiency and hypopituitarism
Explanation:
Pituitary gland is responsible for stimulating the release of all the essential hormones from our body. If pituitary hormones are not produced in sufficient amount then a complex problem known as growth hormone deficiency is caused. In absence of multiple pituitary hormones, hypopituitarism is caused.
Some of the complications caused because of this deficiency are –
a) Reduced size of body and organs
b) Lower energy level and density of bone material
c) High risk of cardiovascular problems
Which of the following is most likely the result of an organism having lipids in its body?
A. A warm river is filled with fish and algae.
B. A human eats fruit to get a quick source of energy.
C. Water cannot be absorbed through the surface of a leaf.
D. A sheep sleeps for longer hours in the winter.
Water cannot be absorbed through the surface of a leaf.
Storing Energy. Regulating and Signaling. Insulating and Protecting. Aiding Digestion and Increasing Bioavailability.What is lipid?A lipid is chemically defined as a substance that is insoluble in water and soluble in alcohol, ether, and chloroform. Lipids are an important component of living cells.Together with carbohydrates and proteins, lipids are the main constituents of plant and animal cells. Cholesterol and triglycerides are lipids.To know more about alcohol here
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Answer: water can not be absorbed through the surface of a leaf
Explanation:
In which part of the chloroplast does the light dependent reaction take place
Briefly describe the DNA transcription process, which involves the transfer of the DNA genetic code onto an mRNA molecule. Include in this answer the role of enzymes.
are organic acids that aid in the transportation and breakdown of cholesterol.
Bile acids are organic acids that aid in the transportation and breakdown of cholesterol.
Further Explanation:
Fat is one of the main source of energy required by the body and it provides more energy than carbohydrates and proteins. Fatty acids are organic acids which contains terminal carboxyl group with a chain of alkyl group consisting of minimum 4 and maximum 22 or more carbon atoms. Most of the fatty acids are found as esters of triglycerides, phospholipids and sphingolipids.
Saturated and unsaturated fats are two types of fats necessary for different functions in the body. Saturated fats are solid at room temperature and higher intake of saturated fat leads to increased low density lipoprotein (LDL) and overall cholesterol levels. Unsaturated fats like polyunsaturated and monounsaturated fatty acids are essential fats which cannot be produced by the body and it increases high density lipoprotein (HDL).
HDL removes excess LDL from the blood and if the level of the HDL is low, LDL get deposited in arteries to cause stroke or heart diseases.
Bile acids is known to facilitate digestion and absorption of lipids and in regulation of cholesterol homeostasis. The bile acids is production localized in the perivenous hepatocytes.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Digestion
Keywords:
Saturated fats, polyunsaturated fatty acids, monounsaturated fatty acids, high density lipoprotein, low density lipoprotein, triglycerides, phospholipids and sphingolipids.
The volume of a gas is ______.
equal to the volume of its container
not related to the volume of its container
dependent on the number of particles
dependent on the mass of the particles
Answer:
is is equal to the container volume .
Explanation:
thats where it is and oware is correct.