What is the
purpose of
alveoli?
A. They warm air and dissolve gases to be put into
the blood stream.
B. They transport air from the trachea to the
bronchioles.
C. They make sound as air passes over them.
D. They filter the air coming into the body.
Select all the reasons a cell regulates gene expression. multiple select question. to express their entire genome at all times to have a specialized function to generate atp by producing proteins to respond to changing conditions
To have a specialized function, to generate atp by producing proteins to respond, to changing conditions are reasons why a cell regulates gene expression.
Cells utilize a variety of ways to enhance or reduce the production of particular gene products, such as protein or RNA, and this process is known as gene regulation. In biology, complex gene expression programs are frequently seen, for instance, to start developmental pathways, react to environmental cues, or adapt to new food sources. Almost every stage of gene expression can be altered, including the beginning of transcription, the processing of RNA, and the post-translational modification of a protein. Nutrients, temperature, light, toxins, metals, chemicals, and signals from other cells are among the factors that affect gene expression. Numerous human ailments and diseases can be brought on by problems with the control of gene expression.
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What forces constitute various intermolecular forces that exist between different molecules?
Adhesive forces are the intermolecular forces of attraction between two different molecules.
What do you mean by intermolecular?Intermolecular forces, such as the electromagnetic forces of attraction or repulsion that act between atoms and other kinds of nearby particles, such as atoms or ions, mediate interactions between molecules. Electrostatic in nature, intermolecular forces result from the interaction of positively and negatively charged entities. Intermolecular interactions are the total of both attracting and repulsive elements, similar to covalent and ionic connections. Intermolecular forces are critical in influencing the physical properties of molecules, such as their melting and boiling points, density, and enthalpies of fusion and vaporization, while being far less important than intramolecular forces of attraction.Kinds of Intermolecular Forces- Distribution, Dipole-Dipole, Hydrogen Bonding, and Ion-Dipole.To learn more about intermolecular, refer to:
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What is it called when molecules move across the cell membrane from an area of high
concentration to an area of low concentration through a carrier protein
Answer:
Diffusion
Explanation:
Diffusion is the process by which molecules/particles move from an area of high concentration to low concentration until equilibrium has been achieved.
When computing the annual growth rate in revenues, you divide the ____ value by the ____ value, and then subtract 1.
When calculating the annual growth rate in payments, you separate the ending value by the beginning value and then subtract 1.
What do you mean by annual growth rate?By considering the average revenue for a specific time period, annual growth rates are determined. The finishing value of an investment or asset is divided by the asset's initial value in the yearly growth rate formula. You get a decimal point that can be converted into a percentage when you take one out of this amount. The change in a measurement's value over a year is known as the annual growth rate (AGR). Growth rate = (Current value / Previous value) x 1/N - 1 is the formula. How to Calculate the Difference Between the Previous and Current Values: Subtract the Previous Value from the Current Value to determine the Difference between the Previous and Current Values. Current value minus Previous value equals Difference.To learn more about annual growth rate, refer to:
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The increase of chromosome number by one or more whole sets of chromosomes is called:
Answer:your answer is haploidy. you are correct
Explanation:
Which of the following is the largest type of black hole?
Stellar - Mass
Supermassive
Supernova
Singularity
Energy is received from carbohydrates, proteins and fats in the foods we eat. These nutrients provide calories, which are listed on food labels as what?.
Energy is received from carbohydrates, proteins, and fats in the foods we eat. These nutrients provide calories, which are listed on food labels as nutrition facts.
Humans' requirements for energy are fulfilled by the food that we consume in the form of carbohydrates, fats, and proteins.
These calories are important for performing various physical activities such as walking, running, and talking.
A nutrition fact label lists all the necessary nutritional content, the number of calories and the serving size to provide necessary guidelines to consumers.
In many countries, the fact label is provided on the food packaging indicating the number of nutrients and other ingredients which are present in the food.
Furthermore, such nutritional facts are only for educational purposes and for rating food quality.
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Which part of an amino acid has the greatest influence on the overall structure of a protein?
The part of an amino acid that has the greatest influence on the overall structure of a protein is the side chains.
Proteins are one of the four basic macromolecules (the rest being carbohydrates, lipids and nucleic acids) that make up living things. It is made up of units of monomers called amino acids.
Each amino acid consists of an amino group attached to the alpha carbon of a carboxylic acid. In simpler terms, an amino acid is made up of a carboxylic acid, an amino group, a hydrogen atom and a side chain. The properties of the side chain determine the structure of the protein it forms.
Differences in properties of amino acids arise from the different size, shape, ionization properties and solubility of its side group. Depending on this, an amino acid can be polar, non-polar, polar but not charged, positively or negatively charged at neutral ph.
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In humans and other multicelluar organisms, which substance plays a central role in long-term energy storage?
In humans and other multicellular organisms, fats and sugar substances play a central role in long-term energy storage.
Fats and sugar are vital macronutrients that belong to the class of carbohydrates and are major sources of energy.
These compounds are key components behind substantial body reactions as they provide energy for carrying many chemical reactions.
Carbohydrates and fats can be obtained from food such as rice, wheat, meat, seafood, eggs, vegetables and milk products.
When these macronutrients are converted into smaller units they transfer energy to cells and other organelles.
To put it simply, our muscles and liver store sugar as glycogen and excess is deposited into adipose tissues as fats.
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How do archaeologists know that the zapotec city of monte alban was more than just a ceremonial center?
There was an observatory for observing the stars to establish a calendar. In what ways did the Chavin influence other peoples? They created amazing works of POTTERY and SCULPTURE that were influential to others.
What is ceremonial center ?Particularly in the Olmec and Maya civilizations of Mesoamerica, ceremonial centres reflect one interpretation of the primary kind of urban site. Each centre often consists of imposing religious structures and temples, offices, ball fields, and nobles' private residences.
Due to their extensive trade networks, the Olmec culture was widely dispersed. Although it is unknown if the Olmec and Zapotec civilizations evolved from an older civilisation, its art and mythology were transmitted via these paths. Olmec influence can be seen in Zapotec stone carvings, plazas, temples, and pyramids.Learn more about Archeologist here:
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Skeletal muscles are in a constant, slightly contracted state called ____.
a. extensibility
b. elasticity
c. muscle tone
d. relaxation
5 examples of binomal nomenclature of organisms
Answer:
5 examples of the binomial nomenclature of organisms are:
cobra - naja naja
frog - rana tigrina
mango - mangifera indica
pear - pyrus communis
honey bee - apis mellifera
Sugars and starches belong to which group of organic compounds?
Answer:carbohydrates
Explanation:
In order to perform karyotype analysis, chromosomes are obtained from actively dividing cells and treated with chemicals to keep them at the _____ stage of mitosis.
Answer:
In order to perform karyotype analysis, chromosomes are obtained from actively dividing cells and treated with chemicals to keep them at the _metaphase_ stage of mitosis.
Explanation:
A phase of cell division known as "metaphase" (mitosis or meiosis). Many chromosomes are often spread throughout the cell nucleus. The cell's chromosomes compress and migrate toward one another, uniting in the center of the dividing cell, while the nucleus of such cell disperses during metaphase. All chromosomes may now be identified when examined under a microscope. During karyotyping, a clinical method for detecting chromosomal mutations, metaphase chromosomes are usually utilized. Several more years earlier we realized what kind of material was, the ability of the microscope to observe chromosomes during metaphase enabled us to recognise them as having genetic information. Later research revealed both DNA and protein makeup chromosomes and also that DNA encodes the genetic information contained inside them.
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Most bacteria that are found within the human body are thermophiles.
a. true
b. false
Most of the bacteria found in human are not Thermophiles . So, the statement would false.
Where are the Thermophiles found?Why are thermophiles useful to human ?Thermophiles are found in high temperature, usually 45 to 80°C and are found in environments such as hot springs, peat bogs , and near deep - sea hydrothermal vents. Thermophillic and thermotolerant microbes are important because they are able to produce thermostable extracellular enzymes.
Mesophiles are found in human body which can pathogenic also.
So, the statement would be wrong.
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As _____, an enzyme does not change its chemical structure while promoting other chemical reactions.
An enzyme acts as a catalyst for other chemical reactions without altering its own chemical structure.
What is catalyst?With its chemistry connotation, catalyst entered the English language very recently, at the beginning of the 20th century. It was created from the word catalysis, a phrase used in chemistry to describe a change in a chemical reaction's course, particularly an increase in its rate brought on by a substance that is chemically unaltered at the conclusion of the reaction. By the 1940s, the word "catalyst" was used figuratively to refer to someone or anything that quickly brings about change or activity.
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 The photos above contain one example of each; igneous rock: metamorphic rock and sedimentary rock. study the pictures carefully and determine which rock is shown in each picture
Answer:
A. metamorphic B. igneous C.sedimentary
Explanation:
pretty sure sorry if wrong tho but I just looked at my collection and it looked the same so good luck!
Some cell processes are influenced by multiple signaling pathways that converge on the same molecular targets. does this provide a selective advantage to the organism?
When several signaling channels that regulate cellular activities converge on the same molecular target, there are benefits as well as drawbacks.
The organism here saves energy by not having to synthesis the components for separate pathways, but there is a chance that the cell will react incorrectly to input.
The term "signaling route" refers to a set of chemical interactions in which a number of chemicals in a cell cooperate to regulate a cell function, such as growth, differentiation, metabolism, or cell division or death.
Four things are necessary for a signaling pathway to function: the initial signal, the receptor that binds the signal, the signaling molecule or molecules that relay the message, and the effector or effectors that cause a temporary or permanent change in cellular structure.
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The vagus nerve releases _________________, which acts on _________________ receptors.
The vagus nerve releases acetylcholine which acts on muscarinic-2 receptors.
The vagus nerve releases which acts on muscarinic-2 receptors.
The primary nerves of the parasympathetic nervous system are the vagus nerve, also referred to as the vagal nerves. This system regulates a variety of bodily processes, including digestion, heart rate, and the immune system. You cannot consciously regulate these involuntary functions, hence they are involuntary.The vagus nerve transmits a wide variety of signals from the gastrointestinal tract and other organs to the brain and back. It is the tenth cranial nerve, passing through the neck, thorax, and abdomen before beginning in the brainstem.Vagus nerve stimulation stabilizes aberrant electrical activity in the brain by stimulating the vagus nerve with the help of an implanted pulse generator and lead wire. Anti-seizure medications are ineffective for about one-third of epilepsy patients.To know more about vagus nerve visit:
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PLEASE HELP, I NEED THIS DONE BY 9:00
Summarize the relationship between water and the plasma
membrane by completing the concept map below.
Water flows into the plasma membrane through osmosis.
The movement of water by osmosis helps with homeostasis.
Osmosis is the movement of water molecules through a semi-permeable membrane from regions of high concentration to regions of low concentration.
Homeostasis refers to the processes employed by the body in order to maintain a fairly constant internal environment.
What is Osmosis and Homeostasis?Osmosis is the movement of water molecules through a semi-permeable membrane from regions of high concentration to regions of low concentration.
Homeostasis refers to the processes employed by the body in order to maintain a fairly constant internal environment.
The plasma membrane is important to the cell in maintaining homeostasis.
The plasma membrane selectively allows water and other small molecules such as ions to enter or leave the cell in order to maintain homeostasis.
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The S-P interval of seismic waves recorded at a seismometer is 8 minutes. The equation for determining this distance to the
epicenter is
S-P interval=0.001613 x distance to epicenter
Approximately how far away is the earthquake's epicenter from the seismometer?
less than 1 km
8.km
O 500 km
5,000 km
According to the equation of the seismic waves, the earthquake's epicenter from the seismometer is approximately 5000km.
What is a seismic wave?A seismic wave can be described as a vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface.
From the question, we have that
S-P interval = 0.001613 x distance
therefore distance = s-p interval/0.001613
8/0.001613 = distance to epicenter
distance to epicenter =8÷0.001613
=4959.702
approximately 5000km.
Seismographs are devices that record the amplitude and frequency of seismic waves and yield information about the Earth and its subsurface structure.
There are several different kinds of seismic waves, and they all move in different ways.
The two main types of seismic waves are body waves and surface waves. Body waves can travel through the Earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes send out seismic energy as both body and surface waves.
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Compare the electron interactions that occur between atoms forming an ionic bond and atoms forming a covalent bond.
In ionic bonds there is a transfer of electrons between two atoms having charge differences, whereas in covalent bonds there occurs an equal sharing of electrons between two atoms.
Ionic bonds is formed when transfer of electrons happen from one atom to other. The atom receiving the electron is electronegative whereas the atom donating the electron is electropositive. This, the two atoms are opposite in charge.
Covalent bonds are formed when electrons are shared between two atoms having no or negligible charge differences. Such atoms maintain an equilibrium between the attractive and repulsive forces. Covalent bonds cannot conduct electricity.
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Proteins are composed of amino acids that contain a(n) ____________ group (labeled a), a(n) ____________ group (labeled b), and a variable r group.
Proteins are composed of amino acids that contain an amino group (labeled a), an acid group (labeled b), and a variable r group.
Proteins are complex biomolecules and are composed of multiple chains of amino acid subunits.
The amino acids are joined together through peptide linkage and are the building blocks of proteins.
Proteins are present in all living things and various biological substances are categorized as proteins such as hormones, enzymes, and antibodies.
Moreover, they are manufactured in ribosomes and play an essential role in the human body such as regulating cells, organs, and tissues' functions.
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6
Write an equation in st
pints.
(2,-8), (6, 10)
The equation for the mentioned set of points (2, -8), (6, 10) will be as follows:
Remember the slope-intercept equation: y = mx = b
To solve this, first we will need to calculate the slope and y-intercept (b).
Equation for slope (m) is,
[tex]m =\frac{ (y_{2} - y_{1})}{(x_{2} - x_{1})}[/tex]
= [tex]\frac{10 - (-8)}{6-2}[/tex] = [tex]\frac{18}{4}[/tex] = [tex]\frac{9}{2}[/tex] = 4.5
Now, to write an equation for a line,
y = mx + b
where,
m = slope
b = y-intercept
So,
y = 4.5x + b
Putting the values of (x,y) = (6,10) to get the y-intercept,
10 = (4.5 x 6) + b
So, b = 10 - 27 = -17
Hence, the equation of line will be,
y = 4.5x - 17
or, y - 4.5x = -17
or, 4.5x - y = 17
or, 9x - 2y = 34
So, the correct equation for the mentioned two points will be 9x - 2y = 34.
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Deforestation causes an increase in the atmospheric concentration of which greenhouse gas?.
Deforestation causes an increase in the atmospheric concentration of carbon dioxide.
What part does deforestation play in global warming?When trees are destroyed, a large portion of the carbon is released back into the atmosphere as CO2. This is how forest degradation and deforestation affect global warming. Carbon is stored in plants and forests. This stored carbon has the potential to be released back into the atmosphere as carbon dioxide and contribute to climate change when they are damaged or entirely destroyed, for example by fire - a process known as deforestation. Up to 10% of the carbon dioxide emissions brought on by human activity are attributable to deforestation. Due to deforestation and degradation, tropical forests no longer serve as a carbon "sink," emitting more carbon than they are able to absorb.Learn more about the greenhouse effect with the help of the given link:
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Define adaptation and selection pressure. why are these concepts important in understanding human anatomy and physiology?
Anatomical, physiological, and behavioural adaptations are traits that have developed in response to selection pressure. Natural processes called selection pressures help some people reproduce more successfully than others.
What is human anatomy and physiology ?A branch of biology that focuses on identifying and describing the physical characteristics of living organisms. In its most limited meaning, gross anatomy only studies the human body's primary bodily structures through dissection and observation.
The study of how the human body works in both health and sickness is known as human physiology. A degree in human physiology offers good preparation for vocations or graduate study in the health professions, biomedical research, or allied fields.Learn more about Anatomy here:
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A train car is to a train, as a _______________ is to a polymer and a molecule is to a ______________
Answer: In bold and underlined
A train car is to a train, as a Monomer is to a polymer and a molecule is to a Macromolecule.
Explanation :MACROMOLECULE CONCEPT:
A macromolecule is a large molecule commonly created through the polymerization of smaller subunits. They are usually made up of thousands, or more, atoms.
For structures consisting of identical atoms, how many atoms are contained in the body-centered cubic unit cell?
In the body-centered cubic unit cell, there exist one atom at the center of the cubic cell, and eight atoms at the eight vertices, one at each.
The atom at each of the vertices is shared by eight additional nearby unit cells, however the atom at the center is exclusively owned by that unit cell. According to the latter assertion, each vertex provides one-eighth of an atom. Since there are 8 vertices, their total contribution is computed as:
(1/8) x 8 = 1 atom to the unit cell.Therefore, the total number of atoms per BCC unit cell is 1+1 = 2.
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A relatively small organelle that contains enzymes that oxidize organic substances.
A relatively small organelle that contains enzymes that oxidize organic substances.- Peroxisomes.
Small membrane-bound organelles called peroxisomes oxidize organic compounds using molecular oxygen. They have a few enzymes that can either make or break down hydrogen peroxide.Peroxisomes are organelles that include a variety of oxidative processes and are crucial for metabolism, the detoxification of reactive oxygen species, and signaling. Fatty acid -oxidation is one of the oxidative mechanisms housed in peroxisomes and is involved in embryogenesis, seedling growth, and stomatal opening. Hydrogen peroxide is created by the oxidation of organic molecules in peroxisomes. This is immediately transformed into water and oxygen. Cholesterol and phospholipids, which are present in brain and heart tissue, are made by peroxisomes.learn more about peroxisomes here: https://brainly.com/question/12146953
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