Answer:
A. Gas is added to the bladder as the fish's depth increases.
Explanation:
The swim bladder is a gas-filled organ localized in the dorsal region of Osteichthyes (bony fish) that allows them to regulate buoyancy, thus maintaining water depth without swimming. Since the swim bladder localizes in the dorsal region, it also functions as a stabilizing organ. This organ is composed of two sacs whose walls contract and expand in response to water pressure. The swim bladder contains an oval window that enables to adjust buoyancy in order to maintain a constant depth, or to ascend or descend in a wide range of water depths.
How do Earth's ecosystems resist the flow toward maximum entropy?
a. Plants and animals decompose after dying, which returns energy to an ecosystem.
b. Plants and animals store energy in ATP to prevent entropy.
c. Plants continually add energy to an ecosystem using photosynthesis, which converts the sun's energy into usable energy.
d. There are fewer animals at the top of the food chain to keep entropy in balance.
Answer:
c. Plants continually add energy to an ecosystem using photosynthesis, which converts the sun's energy into usable energy.
Explanation:
The first thermodynamic law states that energy does not create or destroy, it transforms. The total energy in an isolated system keeps invariable, but the quality of the energy (exergy) might vary. The second thermodynamic law stated that if there is any process in a system there, the energy quality (exergy) must degrade. Any real process might only proceed in one direction that conducts to an increase in entropy. Entropy: Thermodynamic magnitude that indicates the degree of the molecular disorder in a system.Exergy: Measure of the maximum capacity of an energy system to produce useful work from a certain energy amount, as it balances with its environment.Ecosystems are the biotic, physical, and chemical components of nature, acting together as disipative processes out of balance. According to the second thermodynamic low, ecosystem development should increase the degradation of energy.
Vegetable growth helps to capture solar energy and dissipate useful gradients. Many times, plants of many species are arranged in such a way that they increase together the foliar surface to optimize capture and energy degradation. Most of the plants´ energy is destined to evapotranspiration, which is the main dissipative pathway in terrestrial ecosystems
The geographical distribution of species richness is highly correlated to the annual evapotranspiration potential. This relationship between species and exergy suggests a close link between biodiversity and dissipative processes. The more exergy is available among species, the more available energy degrading paths will be. Trophic levels and food chains are based on fixed photosynthetic material and the subsequent dissipation of those gradients. There will be a higher species´diversity in places where there is more available exergy.
From the last question! which of the following is the independent Variable In experiment A: The presence of the headache B: the experimental drug C: The placebo D: the medical researcher.
Answer:
B
Explanation:
The experimental drug has a direct effect on the dependent variable which is the presence of the headache.
what is digestion??
Answer:
morjjhhhfligujcckgxjgxkgxgftixfjchkxdhshfzfyxkhgcgjf
Can a element exist in all states of matter?
Answer:
. Every element can exist in the 3 basic states:
Explanation:
2 Answers. : gas, liquid, solid. It is just a matter of enough freezing and high pressure (to solidify gases, even Helium) or enough heat and low pressure (to vaporize metals, even tungsten)
Which of the following has least mass? 1)3.01 × 10²³ atoms of C 2)8 gram of hydrogen 3)2.5 mole of Na 4)1 mole of S
Answer:
8 gram of Hydrogen
You have to work out the mass of each answers option so for
1. from atoms to mass you have to work with avagadros number (6.23x10^23) and then with the molar mass of the Carbon.
2. Already in grams so do not need to do anything
3. From mole to mass, just take the moles and multiply it by the molar mass
4. Do the same as 3 as they are both in moles
The chemical reactions that take place in a cell, as compared to the chemistry in nonliving matter, primarily occur:________a. between simple moleculesb. in a hydrophobic environmentc. in extreme temperaturesd. between carbon-based molecules
Answer:
The correct answer is : d. between carbon based molecules.
Explanation:
As compared to the chemistry in non living matter, the chemical reaction that takes place in a cells such as cellular respiration, metabolism, transcription, translation etc.
All these reaction requires or involves carbon, a essential element present in almost every biological molecule or component these molecules are essential for any reaction occur in a cell.
Thus, the correct answer is option D.
When cell division does not occur in the usual pattern, a(n):_____ results.
Answer:
Tumor
Explanation:
When cell division does not occur in the usual pattern, a tumor results. This is also the major cause of cancer as there is usually the presence of tumors or cancerous cells
These cells multiply through cell division rapidly and abnormally thereby causing problems in the organisms as a result of them affecting and spreading to other parts of the body which are close to the tumor growths.
all organisms possess a genetic system based on what
Answer:
DNA
Explanation:
Deoxyribonucleic acid or DNA is defined as the genetic material in all the living organisms responsible for all the genetic activities in an organism.
DNA carries genetic instructions that are inherited from one generation to another generation. The DNA comprises of genes having specific genetic code that encodes the sequence of amino acid residues in proteins. DNA undergoes the process of replication and form several copies of it which are passed on to next generation.
Hence, the correct answer is "DNA".
All organisms possess a genetic system based on DNA as it is a hereditary material.
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
As all genetic information is stored in DNA all genetic systems are based on DNA.
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how does snake move? explain
Answer:
Snakes slither to move around because they have no legs. They rely on their muscles and scales... The scales drag against the ground to help move the snack forward. Finch said that a snack 's strong muscles help it lift some scales and allow it to move allow rough surfaces like branches and trees.
Explanation:
Pls Mark me as brainliest
My doctor explained that Clomid works by "tricking the brain into thinking that estrogen levels in the body are low." She explained that this is what leads to the extra stimulation of the ovaries to encourage eggs to be released. One of the references for Clomid said this happens because there is less negative feedback. Can you explain to me how this "trick" and the decreased negative feedback are related? Why would these factors lead to the stimulation of the ovaries?
Answer:
Clomid tricks the body because it tells the brain that estrogen levels are low, thereby leading to higher production of this hormone
Explanation:
There are many types of hormones that are regulated by the negative feedback mechanism (where hormone feeds back to decrease its production). Clomid is a drug used to treat female infertility by making the body think that the concentration of estrogen is low, which induces the secretion of Follicle-stimulating (FSH) and luteinizing (LH) hormones by the pituitary gland. The estrogen hormone exerts negative feedback on the Gonadotropin-releasing (GnRH) hormone, which is responsible for the release of FSH and LH. High FSH levels stimulate the growth of follicles in the ovaries, which will be released during ovulation.
I don’t understand this and it’s a big test and I can’t fail!!
Answer:
Double Helix
The structure of DNA is called a double helix.
Which of the following is true about density and states of matter for most substance
Answer: A substance is denser as a liquid than a solid, and a substance is denser as a gas than as a liquid. Hope this helped! :)
Answer:
A substance is denser as a solid than as a gas.
Explanation:
lol I got the question wrong but it's that answer
how are saturated fats different from unsaturated fats
Answer:
Saturated fats have no double bonds in their chemical structure. They are “saturated” with hydrogen atoms. Because of their chemical structure, they have a solid consistency at room temperature. Unsaturated fats are typically liquid at room temperature. They differ from saturated fats in that their chemical structure contains one or more double bonds. They can be further categorized as: 3
Monounsaturated fats: This type of unsaturated fat contains only one double bond in its structure. Monounsaturated fats are typically liquid at room temperature and include canola oil and olive oil.
Polyunsaturated fats: This type of unsaturated fat contains two or more double bonds in their structure. They are liquid at room temperature. Polyunsaturated fats include safflower oil, sunflower oil, and corn oil.
Explanation:
4. CJ wanted to see if listening to music would make the basketball players make more baskets. On day one, he didn’t play any music and counted how many baskets they could make in 10 minutes. On day 2, he played rap music and counted the baskets, and on day 3, he played classical music and counted the baskets. a. Independent Variable (IV): _____________________________________________ b. Dependent Variable (DV): _____________________________________________ c. Control: ____________________________________________________________
Answer:
Independent variable- different kind of music played
Dependent variable- will listening to music make the players make more baskets?
Control- didnt play any music at all
Explanation:
CJ wanted to see if listening to music would make the basketball players make more baskets. Day 1, he didn't play any music and counted how many baskets they could make in 10 minutes. Day 2, he played rap music and counted the baskets. Day 3, he played classical music and counted the baskets.
What is independent variableThe Independent variable in above question is listing to music or not because it totally depend upon CJ that he is listing music or not.
Dependent variable
The dependent variable in above question is number of basket made by the players because it's totally depend on player that how much he want to made basket.
Controlled variable
The controlled variable in above question is 10 minute time period, players, height of the basket because it totally depend upon CJ that how much time they listen music and how he throw the basket so all above is controlled variable.
Therefore,CJ wanted to see if listening to music would make the basketball players make more baskets. Day 1, he didn't play any music and counted how many baskets they could make in 10 minutes. Day 2, he played rap music and counted the baskets. Day 3, he played classical music and counted the baskets.
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any ideas on what it is?
Answer:A
Explanation:
classifications of snail
A depressed area of bone located on the inetrnal surface of the mandible inferior to th emylogyodi ridge, appears radiolucent is called_________.
Answer:
Submandibular fossa
Explanation:
The submandibular fossa is a concavity found under the mylohyoid line in the lingual portion of the mandibular canal. The mandibular fossa is particularly important for dentists since this region is surrounded by structures that are essential in implant surgery, as well as the static bone cavity of the mandible. In consequence, dental professionals need to know the anatomy of the submandibular fossa for efficiently controlling hemorrhages and nerve damage.
How many vowels does Appalachian have ?
Answer:
5
Explanation:
aeiou are vowels
Answer:
5
Explanation: AEIOU somtimes Y are vowels
Which of the following is a true statement? a)Often, fossil remains of a large complex animal are incomplete. b)Often, fossil remains of a large complex animal are complete. c)Often, fossil remains of a small simple animal are incomplete. d)Often, fossil remains of a small simple animal are complete.
Answer:
C: Often, fossil remains of a large complex animal are incomplete.
Explanation:
Fossils are incomeplete because of the skin.
fossil remains of a large complex animal are incomplete.
What are fossils?The preserved remains, or traces of remains, of extinct animals are called fossils.
The remains of the organism itself are not fossils. They're stones. An full organism or only a portion of one can be preserved as a fossil. Leaves, feathers, shells, bones, and shells can all turn into fossils.
Fossils come in a wide range of sizes. Only a microscope can see microfossils. Microfossils include pollen and bacteria. Macrofossils can weigh several tons and measure many meters in length. Petrified trees or dinosaur bones are examples of macrofossils.
Therefore, fossil remains of a large complex animal are incomplete.
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8. The amount of energy the producers in this energy pyramid provide the primary
consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary
consumers. Based on this model, how much of the energy was provided to secondary
consumers?
Answer:
Energy provided to secondary consumers = 5,400
Explanation:
Given:
Primary consumers = 54,000 joules
Tertiary consumers = 540 joules
Find:
Energy provided to secondary consumers
Computation:
10 % energy is transfer to next user
So,
Primary consumers used 54,000 joules
So,
Energy provided to secondary consumers = 54,000 × 10%
Energy provided to secondary consumers = 5,400
Define monomer and polymer
Answer:
Monomer is a molecule that can be bonded to other identical molecules to form a polymer.
Polymer is a substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together
A monomer is a molecule that forms the basic unit for polymers, which are the building blocks of proteins
Polymer is a big molecule that forms from monomers, it consist of macromolecules (large molecules)
Question 1 (1 point) Which of the following is NOT one of the four main elements of an amino acid? Question 1 options: Nitrogen Calcium Oxygen Hydrogen Carbon Question 2 (1 point) Hemoglobin is a protein that carries oxygen from the lungs to the other parts of the body. Which type of protein is hemoglobin? Question 2 options: Contractile Structural Hormone Transport Question 3 (1 point) What are the building blocks of proteins? Question 3 options: monosaccharides amino acids nucleotides fatty acids
Answer:
calcium is not a main element of calcium . question 2 hemoglobin is a globular protein with an embedded heme group. so a transportation protein and question 3 the building blocks of proteins are amino acids.
Explanation:
1. The element that is not part of the four main elements of amino acids would be calcium
2. Hemoglobin is a type of transport protein.
3. The building blocks of proteins are amino acids.
Amino acids represent the building blocks of proteins. They are made up of four main elements in the form of carbon, nitrogen, oxygen, and hydrogen. Some amino acids have other elements such as sulfur in methionine and cysteine. Amino acids are joined together by peptide bonds to form proteins.
Hemoglobin is a protein molecule whose characteristic red coloration is caused by the presence of iron. The molecule is found abundantly in the blood of mammals and primarily serves as an oxygen transporter in the circulatory system. Hemoglobin reversibly bonds with oxygen in the lung to form bright red oxyhemoglobin. The oxygenated blood is then transported around the body during which the oxyhemoglobin bond is broken to release oxygen to different cells of the body.
In summary, calcium is not part of the four main elemental compositions of amino acids, amino acids are the building blocks of proteins, and hemoglobin is primarily a transport protein.
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which is associated with low humidity
dry air
warm air
rainforest
coastal area
Answer:
Dry air.
Explanation:
One definition of dry air is a theoretical sample of air that has no water vapor. Another definition of dry air is air that has a low relative humidity. When the relative humidity drops below about 40%, the air feels dry to the skin.
A physical phenomenon that is typically associated with low humidity is: A. dry air.
What is dry air?Dry air can be defined as a type of air that does not contain water or water vapor at all. Thus, a dry air refers to a sample of air that is devoid of moisture such as water or water vapor.
Based on scientific information, dry air is a physical phenomenon that is typically associated with low humidity i.e it has zero percent (0%) relative humidity.
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The Scientific Method
Put these in order, top to bottom, from first in the process to last.
Investigation and Observations
Prediction
Summary
Hypothesis
Question
< PREVIOUS
5 of 32
NEXT->
Answer:
hey
Explanation:
True or false? A testable question is a question that can be answered by designing and conducting an experiment?
Answer:
True
Explanation:
A testable qustion has to be able to be tested useing experiments
Maggie's Plant Experiment In this exercise you will read the following scenario and identify the parts of the scientific method in it. Maggle read that some plants grow better if the soil is acidic. She can't believe that a plant can grow when exposed to acid. Maggle decides to test if the plants she has will grow better when acld is added to the soil. She puts potting soll in two planting containers and transplants two of her geraniums that seem about the same size into the pots. She puts the pots in the same location so that they both get the same sunlight each day, are at the same temperature and she makes sure they get the same amount of water. However, Maggie puts a tablespoon of vinegar in the water she gives to one of the plants. She measures the growth of the plants every week for five weeks and records the results in a data table below: Height of Plants in Container with Height of Plants in Container without Week Vinegar Vinegar (cm) (cm) 10.0 10.0 2 12.4 11.5 3 14.8 13.0 18.0 15.7 5 21.4 17.8
Answer:
Please find the identified steps of the scientific method below
Explanation:
A scientific method is a series of steps that aims at solving a problem. The steps in a scientific method include:
1. Making observation: In this experiment, Maggie observed when she read that some plants grow better if the soil is acidic. This is her observation that led to the scientific question: Do plants grow better in an acidic soil?
2. Formulating hypothesis: Hypothesis is a testable explanation to a problem. In this experiment, Maggie's hypothesis is; IF acid is added to the soil, THEN plants will grow better
3. Test hypothesis: the hypothesis is tested by conducting an experiment. In this case, Maggie places two geranium plants of the same size in two pots. Then she added a tablespoon of vinegar to one of the pots and allows the other grow normally without acid. The independent variable in this experiment is the vinegar added while the dependent variable is the height of the plants. The plant group with the vinegar is the experimental group while the plant group without vinegar is the control group. The constants of this experiment are same sunlight, same amount of water, same location etc.
4. Analyse data: The growth of the control and experimental plants were measured every week for five weeks by measuring their heights. The height (cm) of the plants with vinegar for the five weeks as as follows: 10.0, 12.4, 14.8, 18.0, 21.4 while the height in cm for the plants without vinegar for the five weeks is as follows: 10.0, 11.5, 13.0, 15.7, 17.8.
5. Conclusion: Based on the result, the plants exposed to vinegar grew better each week except week 1, which is the week they started. Hence, the hypothesis of this experiment will be ACCEPTED because the experiment proves it.
The scientific method parts in the scenario are: observation, research question, hypothesis, experimental design, data collection, data analysis, and conclusion.
The following scientific method components are depicted in the scenario:
Maggie reads that certain plants thrive in acidic soil and expresses her scepticism about this assertion.
Will adding acid to the soil help plants develop more effectively? Maggie asks in her research question.
Maggie's hypothesis, even if it isn't stated in the scenario, can be deduced as follows: The plants will grow more effectively if acid is introduced to the soil.
Design of the Experiment: For Maggie's experiment, potting soil is used to fill two planting containers, and two geraniums of the same size are transplanted into each container. She makes sure that both containers have the equal amount of water, sunlight, and temperature.
Data collection: Over the course of five weeks, Maggie measured the development of the plants once a week, and she recorded the heights of each plant in a data table.
Data comparison and analysis are done by Maggie using the plants' measured heights during a five-week period.
Maggie can make inferences about her hypothesis and whether the vinegar addition had an impact on the plants' growth based on the information she has gathered and the analysis she has done.
Thus, these are the parts of the scientific method in it.
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The receptors on the ______ of a neuron receive(s) the transmitter released by other neurons.
Answer:
The receptors on the postsynaptic membrane (dendrites) of a neuron receive(s) the transmitter released by other neurons.
Explanation:
Neurons transmit nervous impulses. These cells are formed in general by a cellular body, dendrites and an axon. The dendrites are cytoplasmic extensions that receive stimuli from other cells. The axon is a long formation capable of conducting the electrochemical signals.
Every neuron forms connections with other neurons. These connections are known as synapsis. As it happens in every synapsis between neurons when a presynaptic neuron sends information, a neurotransmitter is released. This molecule is a chemical substance that travels through the synaptic cleft to the junctional area of the other neuron and binds to its receptors in the postsynaptic membrane, located in dendrites of the other neuron. This receptor is a protein structure that triggers an answer. The binding produces a depolarization of the cell called an excitatory postsynaptic potential. An action potential is initiated and spreads to the rest of the membrane depolarizing it. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic answer. To stop this process, the neurotransmitter must be taken out from the synaptic space.
During which step of cellular respiration is the most ATP produced?
A. Krebs cycle
B. glycolysis
C. photosynthesis
D. electron transport chain
Answer:
D. electron transport chain?
Answer:
its D
Explanation:
extra carbon dioxide in the blood is removed by the lungs. how would extra carbon dioxide in lake be removed?
Carbon Dioxide that doesn’t form bicarbonates which can be can be removed by aeration.
What is Carbon dioxide Buildup in Lungs ?Our lungs have two important functions such as to take oxygen in, and throw Carbon dioxide out; It is the byproduct of all biochemical reactions
The accumulation of Carbon dioxide in the lungs can lead to high carbon dioxide levels in the blood which affects multiple organs and life-threatening symptoms.
High Carbon dioxide levels are very common cause of COPD patients
It also leads to Obesity Hypoventilation syndrome refers to Shortness of breath from being overweight, by gaining you too much weight it may be harder to take a deep breath, so part of the lungs collapse and ventilation suffers.
Opioid over dose can also slow down your breathing by acting on the respiratory centers in brain and lower the breathing process leads to Carbon dioxide buildup.
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Compared with their counterparts in developed countries, individuals in developing nations typically have a
a
larger ecological footprint.
b
greater dependence on fossil fuels.
c
shorter life span.
d
higher standard of living.
Answer:b
Explanation: