Homeostasis and Cell Transport 1. What does selective transport or selectively permeable mean? 2. What types of organic molecules make up a cell membrane? 3. What is the function of the cell membrane? 4. What is diffusion? 5. What is facilitated diffusion? 6. What is equilibrium? Give exam
Answers
Answer:
The cell membrane is composed of a phospholipid bilayer, which is a double layer of phospholipid molecules. These molecules have a hydrophilic (water-loving) head and a hydrophobic (water-fearing) tail. The hydrophobic tails face each other, forming a barrier that only allows certain molecules to pass through.
The main function of the cell membrane is to protect the cell from the external environment and to maintain the cell's internal environment. The cell membrane also plays a role in cell signaling and communication, as well as in the movement of substances in and out of the cell.
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. This movement occurs without the input of energy, and it helps to distribute molecules evenly throughout a system.
Facilitated diffusion is a type of passive transport that uses proteins in the cell membrane to help molecules move across the membrane. These proteins, called transmembrane proteins, provide a channel or carrier through which molecules can pass. Unlike diffusion, facilitated diffusion requires the input of energy to move molecules across the membrane.
Equilibrium is the state of a system in which the concentration of molecules is equal on both sides of a barrier. In the context of cell transport, equilibrium occurs when the concentration of molecules inside and outside of the cell is the same, and there is no net movement of molecules across the cell membrane. This state is also known as dynamic equilibrium.
Related Questions
The subclavian artery is renamed the artery after it passes over the lateral border of the first rib.
Answers
The subclavian artery is renamed as axillary artery after it passes over the lateral border of the first rib.
What is axillary artery?The subclavian artery continues as the axillary artery at the lateral aspect of the first rib, serving as the primary artery of the upper extremity. The artery has three sections based on its proximity to the pectoralis minor muscle, each of which has six major branches.A sizable muscle vessel that passes through the axilla is called the axillary artery. It is in charge of delivering oxygen-rich blood to the upper limb as well as to a portion of the scapula's and upper lateral thorax's musculocutaneous system.As a result, two primary arteries rather than one supplied the upper limb's axillary region in particular with arterial blood on both sides. These two arteries may be lingering branches of the capillary plexus of the growing limb buds because they came from the first portion of the axillary artery.Learn more about axillary artery here:
https://brainly.com/question/8424000
#SPJ4
An element with symbol 'y' is represented as 30 Y 65 . what is the atomic number and mass number of this element? Name the element 'Y'.
Answers
Answer:
Your atomic mass is 65 and atomic number 30. With this information, you'll find that this element happens to be Zinc, with 30 protons, 30 electrons and 35 neutrons on a stable level. There is also 4 energy levels. Hopefully this helps. Good Luck!
The more time people spend using social media, the less they read books.
Independent Variable:
Dependent Variable:
Answers
Answer:
Independent: Time on Social Media
Dependent: Less books read.
An independent variable in an experiment is a variable whose outcome is not affected by other variables present in the experiment. while
A dependent variable is a variable whose outcome is directly determined/affected by changes made by an independent variable in the experiment.
The number of books read is a dependent variable because it depends on the amount of time spent on social media ( independent variable ).
Hence we can conclude that the Independent variable in the experiment is the time spent on social media while the number of books read is a dependent variable.
Learn more : https://brainly.com/question/82796
is the chemical bond Te+H covalent or ionic
Answers
Answer:
Electron sharing between an atom of carbon and four atoms of hydrogen meets the requirements of all atoms. The bonds are covalent because the electrons are shared: although hydrogen often participates in ionic bonds, carbon does not because it is highly unlikely to donate or accept four electrons.
Explanation:
Onepage review on why understanding gas and vapors in a work setting is important and what we can do in our workplace to prevent accidents with gases and vapors.
Answers
Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.
In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.
Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.
know more about vapours here
https://brainly.com/question/29640317#
#SPJ11
Translation:
A. The The process process of of making making RNA
B. The activation of a gene that that produces a protein
C. Irreversible changes to the DNA sequence
D. The process of making proteins from RNA
Answers
Answer:
B. The activation of a gene that that produces a protein
Explanation:
Translation is the activation of a gene that that produces a protein
Parts of the mantle are able to flow like thick molasses. Other parts of the mantle are very rigid.
Which of the following best describes the mantle?
A.
The mantle has properties of gases and liquids only.
B.
The mantle has properties of both liquids and solids.
C.
The mantle has properties of liquids only.
D.
The mantle has properties of solids only.
Answers
(B)The mantle has properties of both liquids and solids
what is mantle?A layer inside a planet's body that is separated from the crust above and the core below is called the mantle. Typically the thickest and most substantial layer of a planetary body, mantles are composed of rock or ice. Planetary bodies that have undergone density differentiation tend to have mantles.
What is mantle example?A mantle is a layer of material that covers a surface, like a blanket of snow on the ground.
The stiff lithosphere, which makes up the uppermost layer of the Earth's mantle, and the more ductile asthenosphere are separated by the lithosphere-asthenosphere border.
learn more mantle here
https://brainly.com/question/349072
#SPJ1
What can communities do to encourage people to be drug free?
Answers
Enabling Local Leaders to Put Local Solutions into Practice
Adopting new community-wide regulations.altering school regulations.creating communication strategies.hosting social occasions devoid of drugs.locating chances for young people to participate in community transformation.providing instruction and training to parents and children.What are drugs?Any chemical that, when consumed, alters an organism's physiology or psychology is considered a drug. Drugs are usually distinguished from food and other substances that support nourishment. It is possible to consume drugs through inhaling, injecting, smoking, ingesting, applying a patch to the skin, using a suppository, or dissolving them under the tongue.
What Are the Four Drug Substances?Depressants. Depressants are among the drug categories that are most often used in society.Stimulants. The converse is true with stimulants like nicotine or coffee.Opioids. The opioid addiction issue has had a severe impact on our society.Hallucinogens.To learn more about drugs visit:
https://brainly.com/question/1331851
#SPJ4
The energy stored in food molecules in living cells is gradually released in a series of linked chemical reactions called a ____________.
Answers
difference between basophils neutrophils and eosinophils mcat
Answers
Basophils, neutrophils, and eosinophils are three types of white blood cells (or leukocytes) that are an essential part of the human immune system. Basophils are the least common of these three types of cells, which are often referred to as the granulocytes.
Basophils contain granules that are high in histamine, and they are used in the body's inflammatory response. Neutrophils are the most common type of granulocyte and are mainly responsible for identifying and killing bacteria. They contain large numbers of lysosomes, special packages of enzymes that help break down invading pathogens.
Lastly, eosinophils form part of the body's immune defense against parasites, and their granules contain enzymes that damage parasites and allergens. In the MCAT, it's important to remember that basophils, neutrophils, and eosinophils all play a vital role in the body's response to potential pathogens.
know more about Basophils here
https://brainly.com/question/31834968#
#SPJ11
The first stage, glycolysis, occurs in is_____conditions,or without oxygen.
Answers
fill in the blank.........
If carbon, which has an electronegativity of 2.5, bonds with hydrogen, which has an electronegativity of 2.1, the bond between the two atoms will be classified as a(n)______ covalent bond.
Answers
Answer:
a nonpolar
Explanation:
not sure, 'cause English isn't my first language
Which digestive organ has villi in it? *
O pancreas
Olarge intestine
O stomach
O small intestine
Answers
You rush through your lab activity and obtain a percent error of 50 percent. Why might your percent error be so high?
Answers
Explanation: Can you be more specific with that plz?
Who am I? I have a tail. I eat other animals. I have no hair on my body.
Answers
Answer:
A snake?
Explanation:
Answer:
A Lizard?
Explanation:
It has a tail, has no hair on the body and eats other animals.
What is the independent variable
Will practicing basketball more often improve my ability to score more free throws
1. Time practicing
2. Type of basketball used
3.free throw score
Answers
Answer:
1. Time practicing
Explanation:
Independent variable is the variable with only 1 change. You are only changing the time for practice.
For example, practicing more basketball would improve ability to get more free throws (free throw depends on practicing) - free throw is dependent variable. The type of basketball is irrelevant; you can cancel that out, has nothing to do with context.
Solution: 1. Time practicing
51) The tidal volume and inspiratory reserve volume together make up which of the following?.
A) Residual volume
B) Functional residual capacity
C) Total lung capacity
D) Inspiratory capacity
E) Vital capacity
Answers
The correct answer is E) Vital capacity.
The tidal volume and inspiratory reserve volume together make up the vital capacity.
How are tidal volume and inspiratory reserve volume combined?The tidal volume refers to the amount of air that is inhaled or exhaled during regular breathing, while the inspiratory reserve volume represents the additional volume of air that can be inhaled after a normal inhalation. When these two volumes are combined, they form the vital capacity.
Vital capacity represents the maximum amount of air that a person can forcefully inhale and exhale. It is an important measure of lung function and is used to assess respiratory health.
By combining the tidal volume, which represents normal breathing, with the inspiratory reserve volume, which represents the extra air that can be inhaled, the vital capacity encompasses the total range of breath a person can take. Therefore, the correct answer is E) Vital capacity.
Learn more about tidal volume
brainly.com/question/27317978
#SPJ11
What are all of the secondary consumers included in this web?Herring
Sprat
Gray seal
Saduria entomon
Monoporeia affinis
Answers
Why? Without the image it’s hard to really tell without the picture of the web, however, it seems to me that the sprat would eat the Saduria thing and the Monporeia and the Seal and herring would eat the Sprat making them the secondary consumers.
Hope this helps
The stimulus that results in the increase of ventilation to maintain blood pH homeostasis is: a) lower blood pH caused by rising levels of CO2 b)higher blood pH caused by rising levels of CO2 c)higher blood pH caused by rising levels of O2 d)lower blood pH caused by rising levels of O₂
Answers
The stimulus that results in the increase of ventilation to maintain blood pH homeostasis is lower blood pH caused by rising levels of CO2.
The respiratory system responds to changes in pH to keep blood pH within the normal range. When the pH drops below the normal range, a person breathes more quickly to exhale carbon dioxide and raise the pH.
When the pH rises above the normal range, a person breathes more slowly to retain carbon dioxide and lower the pH. Carbon dioxide is acidic and in our blood, it reacts with water to form bicarbonate and hydrogen ions.
This reaction determines the pH of our blood. If the concentration of CO2 increases in our blood, the reaction will be pushed toward the production of more hydrogen ions, and the blood will become more acidic. The opposite is true when the concentration of CO2 in our blood decreases.
To know more about homeostasis visit:
https://brainly.com/question/31789146
#SPJ11
the eruption of the first permanent molar and the completion of brain growth happen during which stage of development?
Answers
The eruption of the first permanent molar and the completion of brain growth happen during the childhood of development. So, the correct option is c.
The mixed dentition stage of development is a stage in human dental development in which an individual has both primary and permanent teeth. The first permanent molar appears during the mixed dentition phase. This occurs during childhood.
The brain, on the other hand, grows the most during the first two years of life, and its growth rate slows down afterward. By the age of 6, the brain has grown to around 90% of its adult size. Thus, the mixed dentition stage is critical for the completion of brain growth.
Therefore, the eruption of the first permanent molar and the completion of brain growth occur during the childhood stage of development.
To know more about Mixed Dentition Stage, refer here:
https://brainly.com/question/28272961#
#SPJ11
Q: The eruption of the first permanent molar and the completion of brain growth happen during which stage of development?
a. juvenile
b. adolescent
c. childhood
d. neonatal
How are water soluble and lipid soluble hormones regulated differently? Explain in what ways they are unregulated and in what ways they are, as well as the difference between regulatory mechanisms
Answers
Hormones play a crucial role in regulating body functions such as growth, metabolism, and reproduction. These hormones can be categorized into two types based on their solubility in water or lipids. Lipid-soluble hormones can easily pass through the cell membrane and exert their effects on intracellular receptors.
Hormones play a crucial role in regulating body functions such as growth, metabolism, and reproduction. These hormones can be categorized into two types based on their solubility in water or lipids. Lipid-soluble hormones can easily pass through the cell membrane and exert their effects on intracellular receptors. In contrast, water-soluble hormones must bind to extracellular receptors to elicit their effects. Here's how water-soluble and lipid-soluble hormones are regulated differently: Water-soluble hormones are usually regulated by a negative feedback mechanism. This occurs when a hormone triggers a response that ultimately results in the reduction of the hormone's secretion. For example, when insulin stimulates glucose uptake, it leads to a decrease in blood glucose levels, which then signals the pancreas to stop secreting insulin.
In contrast, lipid-soluble hormones such as steroids are regulated by a positive feedback mechanism. In this case, a hormone triggers a response that leads to more hormone secretion. For example, during the menstrual cycle, estrogen levels rise and trigger the release of luteinizing hormone (LH), which, in turn, stimulates the production of more estrogen. In both cases, the regulatory mechanism ensures that hormone levels remain within a narrow range.In terms of unregulated mechanisms, water-soluble hormones can be quickly broken down and excreted by the kidneys, which helps to maintain their levels within a healthy range.
In contrast, lipid-soluble hormones can accumulate in adipose tissue, which can lead to hormonal imbalances and health problems in some cases. In summary, water-soluble and lipid-soluble hormones are regulated differently. While water-soluble hormones are regulated by negative feedback, lipid-soluble hormones are regulated by positive feedback. However, both mechanisms ensure that hormone levels remain within a narrow range to maintain proper bodily functions.
To know more about lipids visit:
https://brainly.com/question/1704581
#SPJ11
Which organ-system carries lipids from the gastrointestinal tract to blood?
a. Respiratory system
b. Circulatory system
c. Digestive system
d. Endocrine system
Answers
The circulatory system, also known as the cardiovascular system, is responsible for carrying lipids from the gastrointestinal tract to the blood. The final answer is (b).
After the ingestion of lipids through food, they undergo digestion in the digestive system, primarily in the small intestine. During digestion, lipids are broken down into smaller molecules called fatty acids and glycerol.Once the lipids are digested and absorbed by the cells lining the small intestine, they are transported into the lymphatic system in structures called lacteals.The lymphatic system eventually merges with the bloodstream, and the lipids are then carried through the circulatory system, specifically the blood vessels, to various tissues and organs throughout the body.
To learn more about lymphatic system, visit here
https://brainly.com/question/29094830
#SPJ11
What renal and hormonal factors will cause an increased release of aldosterone from adrenal cortex?
Answers
Answer:
Renin; angiotensin I and angiotensin II
Explanation:
Renin is a key hormone involved in the renin-angiotensin-aldosterone system (RAAS), which is responsible for regulating blood pressure in response to changes in blood volume. Renin is secreted primarily by the kidneys to promote the production of the peptide hormone angiotensin in the blood vessels. Subsequently, angiotensin stimulates the release of aldosterone from the adrenal cortex, stimulating sodium retention by the kidneys. Renin acts on its substrate angiotensinogen to yield angiotensin I, which is then converted to angiotensin II by the angiotensin-converting enzyme (ACE). Finally, angiotensin 2 promotes the release of aldosterone by the adrenal cortex, which acts on renal tubules, leading to the reabsorption of sodium and water and the excretion of potassium.
A substitution mutation occurred and changed the 5th base in the DNA from a C to a T. Write the sequence of RNA codons that would result from this kind of mutation. **Separate each codon with a space. TACACGCAATTACCAGGGTAGCCATTGATT
Answers
The sequence of RNA codons resulting from the substitution mutation that changed the 5th base in the DNA from a C to a T is AUGUGCGUUAUCCAGGGUAGCCAAUUGA.
In DNA, the base C (cytosine) pairs with G (guanine), while in RNA, the base C pairs with G. However, due to the substitution mutation, the original C is replaced by a T (thymine) in the DNA sequence.
In RNA, thymine is replaced by uracil (U). Therefore, the RNA codons corresponding to the mutated DNA sequence can be derived by replacing each T with U and maintaining the sequence order.
The original DNA sequence TACACGCAATTACCAGGGTAGCCATTGATT would have the corresponding RNA codons AUGUGCGUUAUCCAGGGUAGCCAAUUGA. Each codon consists of three bases and represents a specific amino acid or a start or stop signal in the translation process of protein synthesis.
It's important to note that the given DNA sequence is provided as a single continuous string, and without additional information about the reading frame or specific gene sequence, it is not possible to determine the precise protein sequence or the functional implications of the mutation.
For more such answers on RNA
https://brainly.com/question/13939644
#SPJ8
rob is a 30-year-old banker who has struggled with being unable to control his orgasms. he customarily ejaculates seconds after penetration. because of this problem, his relationships over the years have been strained and difficult. which of the following sexual dysfunctions is rob experiencing?
a)Premature (early) ejaculation of the following sexual dysfunctions is rob experiencing.
b)Erectile dysfunction can be brought on by physical conditions such heart disease, high cholesterol, hypertension, diabetes, obesity, and smoking.
c) issues must disturb the woman for a sexual dysfunction condition to be identified.
Answers
Rob is experiencing premature ejaculation, where he ejaculates seconds after penetration, causing strain in his relationships over the years. a form of sexual dysfunction. a) Rob is experiencing premature (early) ejaculation.
What sexual dysfunction is Rob experiencing?Rob is experiencing premature (early) ejaculation, which is a form of sexual dysfunction. Premature ejaculation is characterized by the inability to delay ejaculation during sexual activity, resulting in ejaculation occurring shortly after penetration or even before penetration.
This condition can lead to significant distress and strain on relationships, as described in Rob's case. Premature ejaculation can have various causes, including psychological factors such as anxiety, stress, or relationship issues, as well as physiological factors.
Treatment options for premature ejaculation may include behavioral techniques, such as the stop-start or squeeze technique, counseling or therapy, and in some cases, medications may be prescribed. It is important for Rob to consult with a healthcare professional to discuss his symptoms and explore appropriate treatment options for his condition.
Learn more about dysfunction
brainly.com/question/31847916
#SPJ11
The coastal ocean zone and estuaries are alike in that both are important as breeding and nesting areas for birds. True or fualse?
Answers
Answer:
I think True
Explanation:
You can refer to it for more information:
The coastal ocean zone and estuaries are alike in that both are important as breeding and nesting areas for birds. The depth of the water in an aquatic ecosystem determines the amount of sunlight that living things receive there. ... The water in freshwater wetlands is always brackish
Which factor can decrease the rate of a chemical reaction?
A low activation energy
B high pressure
C low temperature
D high concentration of enzyme
Answers
(c)Low Temperature of the Reactants can decrease the rate of a chemical reaction.
How temperature effects the rate of a chemical reaction
Chemical reactions typically occur faster at higher temperatures. Food can spoil quickly when left on the kitchen counter. However, the lower temperature inside of a refrigerator slows that process so that the same food remains fresh for days. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision.Thus decrease in the temperature of a reaction can help in decreasing the rate of a chemical reaction.Lower the temperature lower the chemical reaction rate.
to learn more about chemical, reactions, refer:
https://brainly.in/question/5872041?msp_poc_exp=4
#SPJ2
which describes what scientists believe earth’s appearance was like 4.5 billion years ago?
Answers
Scientists believe that Earth's appearance 4.5 billion years ago was vastly different from what it looks like today.
At that time, Earth was a molten ball of rock and metal, with no atmosphere or oceans. Earth's appearance was characterized by a molten, inhospitable surface with no atmosphere and frequent meteor impacts. It was constantly bombarded by asteroids and other celestial bodies, causing its surface to be molten and unstable. It wasn't until about 4 billion years ago that Earth started to cool down and solidify, allowing for the formation of an atmosphere and oceans. This process took millions of years, and it wasn't until about 3.8 billion years ago that life first appeared on Earth.
So, in summary, Earth's appearance 4.5 billion years ago was a molten, unstable, and lifeless planet.
Learn more about Earth at: https://brainly.com/question/15205710
#SPJ11
A grassland ecosystem experiences a long-lasting drought and unusually warm temperatures over several summer months.
Which statement explains the ,begin emphasis,most,end emphasis, likely effects of these changes on the grassland ecosystem during the drought?
Answer options with 4 options
A.
Increased temperatures will result in an increased variety of producer species.
B.
Increased temperatures will result in increased rates of photosynthesis in producers.
C.
Decreased rainfall will result in decreased competition among consumer species for food.
D.
Decreased rainfall will result in decreased diversity of consumer species due to less available food.
Answers
Decreased rainfall will result in decreased competition among consumer species for food.
The correct option is C.
What is a ecosystem ?An ecosystem is a region in which a bubble of life is created by plants, mammals, and other organisms interacting with the weather, environment, and other factors. Abiotic elements, or non - living things components, coexist with biotic components in habitats. Ecosystem functioning is the ability of natural phenomena and elements to either directly or indirectly meet human demands for commodities and services.
What is importance of ecosystem?Human welfare and survival rely on healthy terrestrial ecosystems because they give us access to critical goods and benefits. More than 90% of our food originates from ecosystem types, which also offer us energy, resources for building and clothing, health-related products, fresh water, and pure air.
To know more about Ecosystem visit:
https://brainly.com/question/13979184
#SPJ13
⚠URGENT!!!⚠
Would you like living in a new urbanism area? Why or why not? Write a minimum of three sentences to explain your answer.
Answers
Answer:
Yes, i would like to live in an urbanism area because i am closer to my friends and family. I like being closer to stores and to my job.
Explanation: