Some organisms in the Phylum Mollusca can communicate through pigmented cells called chromatophores.
Chromatophores are pigment containing cells that produce colour. Chromatophores can be found in a wide range of animals including reptiles, fish, cephalopods and amphibians. Cephalopods, under the phylum Mollusca often use their chromatophores for communication and as a type of camouflage.
Based on their colour under white light, chromatophores can be grouped into; erythrophores (red), xanthophores (yellow), leucophores (white) and cyanophores (blue).
The octopus and other members of the phylum Mollusca change their colours through complex chromatophore organs controlled by muscles.
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Oligosaccharide chains added in the er can undergo further modification in which organelle(s)?
Oligosaccharide chains added in the ER can undergo further modification in both the cis and trans sacs of the Golgi Apparatus.
What is the Golgi Apparatus?The Golgi Apparatus is an organelle composed of groups of planned sacs that serve to modify lipids and proteins and thus acts as a processing center for these macromolecules.
The Golgi Apparatus is a fundamental eukaryotic organelle of the endomembrane system and this structure transports all processed products to their final destination (e.g., lysosomes of the cell membrane).
In conclusion, Oligosaccharide chains added in the endoplasmatic retuiculum can undergo further modification in Golgi Apparatus.
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While looking at tissues slides with a microscope, you identify an epithelial tissue that consists of 4 layers of thin, flat cells. this epithelial tissue would be classified as ___________.
While looking at tissues slides with a microscope, you identify an epithelial tissue that consists of 4 layers of thin, flat cells. This epithelial tissue would be classified as stratified squamous.
What is stratified squamous epithelium?Squamous (flattened and scale-like) epithelial cells make up the top layer of a stratified squamous epithelium, which is a stratified epithelium. Cuboidal or columnar cells may be present in the deeper layers. While some stratified squamous epithelia are little or not at all keratinized, others are extensively keratinized. The stratified squamous keratinized epithelium has relatively flat cells on its surface. They are flat and dead at the same time. Organelles and the nucleus are absent. Our skin is waterproof because they are loaded with keratin, a protein.
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A radial array of microtubules that extend from centrioles toward the plasma membrane in fungal, algal, and animal cells is collectively called a(n)?
A radial array of microtubules that extend from centrioles toward the plasma membrane in fungal, algal, and animal cells is collectively called aster.
What are microtubules?
Microtubules are tubular structured polymers which are found throughout the cytoplasm and forms a component of the cytoskeleton.
The cytoskeleton in cells are composed of the microtubules, microfilaments and intermediate filaments.
Microtubules play important structural role in the cell as well as in cell division, growth, and movement.
The term aster is used when an array of microtubules extend from centrioles toward the plasma membrane in fungal, algal, and animal cells.
In conclusion, microtubules are major components of the cytoskeleton and has been found to have an indefinite length.
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Performing "jumping jacks" requires ________.
a) flexion and extension
b) pronation and supination
c) abduction and adduction
d) inversion and eversion
Performing "jumping jacks" requires abduction and adduction.
Abduction and adduction :Various body motions or movements are referred to by the phrases abduction and adduction. The reverse of adduction is abduction. Abduction is the movement of limbs away from the midline of the body, such as the arms, legs, or fingers. On the other hand, adduction means bringing your limbs closer to the midline.
What is the abduction movement?Abduction is often defined as the movement of a limb or appendage away from the body's midline in anatomical terms. Arm abduction in this situation refers to the movement of the arms away from the body while remaining in the plane of the torso (sagittal plane).
What exercises are adduction?While abduction exercises entail moving your limbs away from your body, like with side lunges, adduction activities include bringing your limbs toward the midline of your body.
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Elements that exist as two covalent bonded atoms are called:
Explain the relationship between wmonomers and polymers using polsyachardies as an example.
Answer:
Polymers are produced from monomers. Essentially, a polymer is indeed the serial repetition of monomers, whether they are of one kind or several different types. Monosaccharides are the building blocks of polysaccharides. When several monosaccharide monomers are linked together, a complex carbohydrate polymer known as a polysaccharide is made. Starch, which serves as plants' primary means of storing energy, is one of the most well-known polysaccharides. The majority of human diets are based on starch. Higher starch percentage foods include corn, soybeans, rice, and bread. We can also give another example of polysaccharides or (many repeated unit of saccharides) that is glycogen. Glycogen is stored food in animal which is made up of small units known as monomers.
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What is the purpose of the NASA Star Finder?(1 point) .
To observe stars and other distant objects in space.
To see how constellations change positions in the sky throughout the year.
To include new stars and constellations that are discovered every month.
To provide images of constellations from month to month.
Answer: To observe stars and other distant objects in space.
Finding the Constellations We see different views of the Universe from where we live as Earth makes its yearly trip around the solar system. That is why we have a different Star Finder for each month, as different constellations come into view.
The Star Finder charts show the sky at about 10 PM for the first of the month, 9 PM for the middle of the month, and 8 PM for the last of the month. These are local standard times. For months with Daylight Savings Time, star chart times are an hour later. The star charts are maps of the sky overhead.
Explanation: let me know if im wrong i tried
To examine stars and other far-away celestial objects. As new constellations emerge, that is why we have a fresh Star Finder for each month. Thus, option A is correct.
What is Star Finder?A Star chart is a straightforward handheld gadget that displays a map of the stars that can be seen in the night sky at any given time.
It demonstrates how stars move across the night sky by rotating a wheel, as well as how different constellations are visible at various times of the year.
Any Star chart map projection is a flat representation of our spherical perception of the cosmos. This technique always has some effect on area, scale, and distance.
In frequently used Star chart map projections, this distortion grows geometrically as the distance from the center rises.
A star chart that is extremely distorted in traditional Star chart is confusing and challenging to use. The attempt to fit the entire dome of the sky onto a single flat map has resulted in this deformation.
Therefore, To observe stars and other distant objects in space.
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You went for a walk through the desert and found a strange looking object. you want to know whether or not it is living. explain how you would use at least four functions of life to determine whether or not this object is living.
Answer:
If the following characteristics were found, the object would be considered living:
Explanation:
properties of living things
Any procedure that causes a change in the state or activity of a cell or perhaps an organism is a response to stimulation( for example locomotion, enzyme generation, expression of genes, etc.)Cells & cellular structure: A cell membrane, nuclei, & cytoplasm are the three components that make up a cell. Complex arrangements of microscopic fibres and tens of thousands of tiny, unique structures known as organelles can be located in the cytoplasm.Genetics: the transmission of characteristics from one generation to the next. Genetics refers to the study of genetics, which is the transmission of qualities from parents to children.The process through which food is converted into energy in the body's cells is called metabolism.Homeostasis is the constant maintenance of internal, external, and chemical circumstances. You can learn more at:https://brainly.com/question/22557084
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Which of the following will decrease soil nitrates?
A. Fast growing crops
B. Decomposers
OC. Nitrifying bacteria
D. Lightning
What is the primarily determines the speed of muscle fiber contraction?
a. amount of actin and myosin
b. amount of actin atpase
c. diameter of the muscle fiber
d. speed of myosin atpase
The speed of muscle fiber contraction is primarily determine by the speed of myosin ATPase; option D.
What determines the speed of muscle fiber contraction?Muscle fiber contraction occurs when a single muscle fiber or group of fibers on receiving a signal from the the brain through the nerves begins to contract and increase the tension within the muscle.
The components of a muscle fiber contraction include:
actin filamentsmyosinmyosin ATPase - an enzyme that determines the speed of contractionIn conclusion, effective muscle fiber contraction involves the coordinated activity of all the muscle contraction components.
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The inability to recognize familiar faces even though one can clearly see and describe features of the faces is associated with damage to the right ________ lobe.
A. frontal
B. parietal
C. occipital
D. temporal
The collection of all the genetic material (the dna) in a cell or organism is called the:_________
genome
The collection of all the genetic material (the DNA) in a cell or organism is called the genome.
The total collection of DNA instructions present in a cell makes up the genome. The human genome is made up of 23 pairs of chromosomes that are found in the cell's nucleus and one tiny chromosome that is found in the mitochondria. Everything a person needs to grow and operate is encoded in their genome.What makes the genome significant?Three billion base pairs of DNA make up the whole human genome, which is uniquely structured to give us our basic anatomy and unique traits like height and hair color. Understanding how genes function is essential for understanding how our bodies function and what occurs when we are ill. Genes are formed by DNA.To learn more about genome visit:
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An increased percentage of _______________________ in your blood can be caused by an acute infection, especially a bacterial infection.
An increased percentage of Septicemia in your blood can be caused by an acute infection, especially a bacterial infection.
What are the most typical reasons for infections in the bloodstream?Most frequently, bacterial infections are to blame for sepsis. But other infections may also be to blame. It can start anyplace that bacteria, parasites, fungus, viruses, or even something as little as a hangnail enter your body. Sepsis may result from osteomyelitis, an infection of the bone.
Other types of white blood cells may decrease as a result of an increase in one type of white blood cell. For instance, if you have a bacterial infection, your neutrophils would increase and your lymphocytes will decrease.
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The eukaryotic ribosome is a(n) __________ ribosome, composed of 40s and 60s subunits.
The eukaryotic ribosome is a 80S ribosome, composed of 40s and 60s subunits.
Ribosome are the nucleoprotein structures. It is involved in the formation of proteins in the process of translation. Ribosomes are composed of two separate units: a smaller one and a larger one. They can be found lying in the cytoplasm of the cell or attached to the endoplasmic reticulum.
80S ribosome is the characteristic of eukaryotic organisms. The smaller unit of it is 40S and the larger one is 60S. The S in the ribosome refers to the Svedberg unit. It is a sedimentation coefficient. Heavier is the structure, higher is the sedimentation coefficient.
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Plastic or Wood?
Two students in a science classroom are debating about whether
the tables are made of wood or plastic. As the teacher passes by,
she suggests, "Use cell theory to find the truth!"
How do postzygotic isolating mechanisms prevent successful interspecies hybridization?
The postzygotic isolating mechanisms prevent successful interspecies hybridization because although fertilization may be considered as successful, the resulting hybrid offspring is unable to develop or reproduce.
What are postzygotic isolating mechanisms?The postzygotic isolating mechanisms are different evolutionary mechanisms that prevent the emergence of hybrid species by acting after fertilization and therefore they act on the offspring to avoid further reproduction of these individuals.
In conclusion, the postzygotic isolating mechanisms prevent successful interspecies hybridization because although fertilization may be considered as successful, the resulting hybrid offspring is unable to develop or reproduce.
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Explain the adaptations of plants and animals in desert regions. please answer fast
Answer:
long eye lashes, hairy ears and closing nostrils help to keep out sand.
thick eyebrows which stand out and shade eyes from the sun.
wide feet so they don't sink in the sand.
they can go without water for over a week because they can drink gallons in one go.
Explanation:
In cells, metabolic pathways can be regulated at many different levels. list and briefly discuss how metabolic pathways could be regulated.
In cells, metabolic pathways can be regulated at many different levels by the following processes allosteric regulation, protein modification, gene expression, substrate sequestration, and cell signaling.
metabolic pathways is a series of reactions that occurs in our body. There are various ways of controlling the metabolic pathways.
Allosteric regulation is the modification of the protein structure to change its active site and turn it on or off.
Sometimes during high demand gene expression increase to increase the amount of substrate.
in cell signalling hormones are used to turn off the genes while in substrate sequestration the substrate is accumulated in a compartment and not allowed to interact with enzyme.
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Within absorptive columnar cells re-synthesized triglycerides are incorporated into ______ before exocytosed through the basal side.
Within absorptive columnar cells re-synthesized triglycerides are incorporated into nascent triglyceride-rich lipoprotein particles, termed chylomicrons before exocytosed through the basal side.
Once consumed, triacylglycerol is hydrolyzed into free fatty acids and monoglycerides in the small intestine prior to absorption. Once these compounds enter the intestinal cell, they are used to resynthesize triacylglycerol.
This lipid is then incorporated into nascent triglyceride-rich lipoprotein particles, termed chylomicrons, for subsequent introduction into peripheral circulation.
Chylomicrons are secreted directly into the lymph before entering the blood stream. Once in circulation, triacylglycerol is hydrolyzed before crossing the plasma membrane of peripheral cells.
The primary enzyme that hydrolyzes triacylglycerol in plasma is lipoprotein lipase.
Lipoprotein lipase hydrolyzes triacylglycerol into free fatty acids and 2-monoacylglycerol. The enzyme is attached to the luminal surface of capillary endothelial cells via a highly charged membrane-bound chain of heparin sulfate-proteoglycans.
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Compare and contrast. what three elements do all macromolecules share? explain how the chemical properties of lipids, nucleic acids, proteins, and amino acids differ from carbohydrates.
All macromolecules have carbon atom and the hydrogen atom.
What are macromolecules?The term macromolecules refers to the molecules that are composed of smaller units. These smaller units are called monomers. The macromolecules that we are concerned with here are the macromolecules that could be found in the human body.
The biological macromolecules are often very large as we can see. This is because the number of units that are joined to form the macromolecules are usually very much. There are thousands of monomer molecules that are joined together to give proteins, lipids, carbohydrates and the nucleic acid macromolecules.
All the macromolecules have the carbon atom and the hydrogen atom. These are found across all the macromolecules. The carbohydrates are reducing sugars thus they contain the carbonyl bond. The carbonyl group is absent in lipids, nucleic acids, proteins, and amino hence they do not undergo carbonyl reduction reactions.
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To discover the plasma concentrations that produce the desired drug effect without toxicity means to establish the drug's:______.
To discover the plasma concentrations that produced the desired drug effect without toxicity means to establish the drugs:
Therapeutic range
Explanation:
The Therapeutic Range: What Does It Mean?
The range of drug levels in a patient's blood within which the medication produces the desired effects on the body is known as the therapeutic range. It has to deal with a numerical standard that identifies the right dosage levels of prescription drugs in the serum or plasma of the bloodstream and the distinct reactions that can occur between toxicology (overdose) and inefficient treatment (under-dose) of the patient.
Why is the drug concentration in plasma significant?
Plasma concentration monitoring is useful for determining compliance with antiarrhythmic therapy, identifying and analyzing potential drug interactions, and determining the benefit to risk ratio of raising the dose of a certain antiarrhythmic agent, among other specific objectives.
Why is the medication concentration in plasma or serum checked?
Drug concentrations in plasma, serum, or blood are measured as part of the therapeutic drug monitoring process. To ensure that drug concentrations stay within a certain range, this information is utilized to tailor dosing.
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What is produced when a substance undergoes rapid oxidation involving heat and light?
Ответ:
Огонь. Образуется, когда вещество подвергается быстрому окислению с участием тепла и света.
Why dont proteins quickly break down into their amino acids when they are mixed with wate?
Proteins won't convert into amino acids very quickly if mixed with only water since there are no enzymes to catalyze the hydrolysis reaction.
What is proteolysis?Proteins break_down into smaller peptides and/or individual amino acid residues through a process known as proteolysis, which is a hydrolysis reaction of peptide bonds. Enzymes or chemicals are typically used to catalyze the proteolytic clea_vage processes. Without catalysts, proteolysis processes or proteolytic clea_vages go very slowly and can take years to cle_ave some peptide bonds. The most frequent reactions, known as enzymatic proteolysis, involve a group of enzymes known as proteases. There are many different types of proteases, some of which may only break_down certain types of peptide bonds and are hence known as peptidases.Although certain exo_peptidases also exist in nature, endo_peptidases make up the majority of proteases.Learn more about the Proteolysis with the help of the given link:
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The term for any generic description or interpretation about a particular individual that is true of practically all individuals or groups is known as a(n)?
The term for any generic description or interpretation about a particular individual that is true of practically all individuals or groups is known as a(n): Barnum statement
A Barnum Statement is a generalization that is worded in a way that makes it seem to describe the person reading it. Barnum's assertions are generally accurate for everyone, yet they usually come off as very personal to the individual. In order to "trick" their subjects or "sitters" into thinking they have insight into them, psychics and mediums use Barnum's promises.
Examples include:
"Not everyone finds your style of humor amusing, but you do"
"you typically consider things before acting"
"You have faced some significant obstacles in your life."
"You and a loved one recently had a disagreement"
"I was pretty intelligent, the psychic told me, but other people didn't always perceive it."
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In contrast to the sympathetic nervous system, the parasympathetic nervous system:_____.
In contrast to the sympathetic nervous system, the parasympathetic nervous system controls the functions when an individual is at rest.
Sympathetic nervous system controls the body's fight or fright response. This means it is functional when the body undergoes some stress, danger or excitement. The hormones associated with it are epinephrine and nor-epinephrine.
Parasympathetic nervous system controls all the activities that relax the body. These functions include digestion, breathing, lacrimation, etc. The chemical released during this response is acetylcholine. Acetylcholine can bind to two types of receptors: nicotinic receptors and muscarinic cholinergic receptors.
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According to the american association of physical anthropologists (aapa) code of ethics, anthropologists are primarily responsible to:_______
According to the american association of physical anthropologists (AAPA) code of ethics, anthropologists are primarily responsible to the people, species, and materials they study.
What is American association of physical anthropologists (AAPA)?Physical anthropologists are members of the anthropology community as well as numerous other groups, each of which has its own moral standards. Physical anthropologists have responsibilities to their academic field, society at large, and the environment. Physical anthropologists have the means to create and uphold an ethical framework while they go about their job thanks to the ideas and rules in this Code. The American Anthropological Association (AAA) established and adopted a code on which this Code is based. The AAA has given the AAPA authority to use and alter the AAA Code as necessary.Learn more about the Physical anthropologists with the help of the given link:
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Semmelweis first promoted the use of disinfecting agents during surgery, such as the spraying of phenol in the operating room. True or false
Semmelweis first promoted the use of disinfecting agents during surgery, such as the spraying of phenol in the operating room. -FALSE
What are disinfectants?In the healthcare industry, a variety of disinfectants are employed either individually or in mixtures (for example, hydrogen peroxide and peracetic acid).Alcohols, chlorine and its derivatives, formaldehydes, glutaraldehydes, ortho-phthalaldehydes, hydrogen peroxide, iodophors, peracetic acid, phenolics, and quaternary ammonium compounds are some of these.These compounds are used in commercial formulations, which are distinct products that need to be registered with the EPA or approved by the FDA.Most of the time, a particular product has a certain application and should be utilised in a particular way.Users should thus carefully study labels to ensure that the right product is chosen for the intended usage and applied effectively.Disinfectants are not interchangeable, and using the wrong concentrations or the wrong ones can cost too much money.To learn more about disinfectants , refer to the following link:
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Help?
Hydrogen bonds in between water molecules are one of the reasons water has a high heat of vaporization.
True or False
Answer:
Itss trueeeeee
Explanation:
The energy required to break multiple Hydrogen bonds causes water to have a high heat of vaporization. A large amount of energy is needed to convert liquid water, where the molecules are attracted through their hydrogen bonds, to water vapor, where they are not.
Which is a correct comparison of the paper model of the planet Earth to the actual planet Earth?
(1 point)
The texture of the paper model is the same as the texture of planet Earth.
The paper model shows the same details as planet Earth.
The paper model is the same shape as planet Earth.
.
The diameter paper model is proportionally the same size as the diameter of planet Earth
Answer:
Venus????
Explanation:
The correct comparison of the paper model of the planet Earth to the actual planet Earth is The diameter paper model is proportionally the same size as the diameter of planet Earth. The correct option is 2.
This means that the size of the paper model's diameter is in proportion to the actual diameter of the planet Earth. In other words, the dimensions of the paper model are scaled down or reduced to represent the size of the Earth accurately. This is a common way of creating models to study or represent large objects like planets, as it allows us to visualize and understand their characteristics on a more manageable scale.
The use of scale allows scientists, educators, or anyone interested in understanding Earth's characteristics to work with a more manageable model while preserving the relative proportions and relationships of the planet's features. It also helps in making comparisons and understanding the magnitude of different features of the Earth in a more practical way.
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Embryonic mouse cells divide every 10 hours at 37C. how many cells would be produced from an egg after three days?
Embryonic mouse cells divide every 10 hours at 37°C. Therefore, the cells that would be produced from an egg after three days will be approximately 128 cells.
Embryonic mouse cells are the cells derived from the embryo of the mouse. These are the stem cells derived from the inner cell mass of the embryo. These cells are pluripotent in nature and can be used to repair any cells or tissues.
According to the question,
The cell divides every 10 hours.
Three days will have = 24 × 3 = 72 hours.
Therefore at the ends of 70 hours approximately there will be 128 cells, considering that the cell divides into 2 after every 10 hours.
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