The mineral-based pigment called Ochre was used by early modern Homo sapiens to color many artifacts and features.
It was used by early modern homo sapiens to color many artifacts and features. This is the most common use by modern humans, especially archaeologists, as any iron rich rock that can be used as a pigment.
The two effects of dividing food-gathering labor, the camp and the dependence of the gender on each other beyond reproduction, were the first great steps toward modern human culture. Sharing of resources and its concomitant division of labor led to a divergence in both the biological and cultural evolution.
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Which of the following can be used to measure absolute time? Select all that apply.
A. varves
B. tree rings
C. law of superposition
D. ratio of C-12 to C-14 in a bone sample
In which step(s) did a chemical change most likely occur? investigation a, step 1 and investigation b, step 1 investigation a, step 2 and investigation b, step 2 investigation a, step 2 only investigation b, step 2 only
A chemical change must have occurred in investigation B step 2 because a change in color occurred.
What is a chemical change?A chemical change is said to occur when a new substance has been formed. The markers of the occurrence of a chemical change are signs such as;
Evolution of a gasAppearance of a solidChange of colorChange of temperatureNow a physical change does not involve the formation of a new substance. Physical change would always involve the change of a substance from one form to another such as the melting of ice.
As such, in looking our for the steps in which a chemical change occurred we must look out for the properties of a chemical change as mentioned above.
Now, a chemical change must have occurred in investigation B step 2 because a change in color occurred.
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Missing parts;
Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1. Add 5 tsp. salt to 100 ml warm water and stir until most or all of the salt is no longer visible. Step 2. Heat the salt solution on a burner until only a white solid remains. Investigation B Step 1. Mix 10 tsp. white sugar into 100 ml water and stir until most or all of the sugar is no longer visible. Step 2. Heat the sugar solution on a burner until the solution thickens and turns brown. In which step(s) did a chemical change most likely occur?
All events that occur in living things in order to maintain homeostasis are known as
Answer:
The living things in order to maintain is homeostasis
The living things in order to maintain is homeostasis
What is homeostasis?
As it is currently understood, homeostasis is a self-regulating process that allows biological systems to remain stable while responding to shifting environmental factors.
The stable internal, external, and chemical conditions that are maintained by living systems are known as homeostasis in biology. In order for the organism to function at its best, a number of factors, including body temperature and fluid balance, must be maintained within predetermined ranges.
The capacity of an organism to retain internal stability in response to environmental changes is known as homeostasis. The best illustration of homeostasis is the body's internal temperature.
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Which two species are actually the closer relatives in terms of evolutionary history: human, chinook salmon, and great white shark?
The two species that are closer relatives in terms of evolution include chinook salmon and white shark.
What is evolution?Evolution refers to a common origin in different organisms, and the main evolutionary mechanism is natural selection.
Humans, chinook salmons and white sharks belong to Chordate Phylum, but these last two are closer form an evolutionary point of view.
In conclusion, the two species that are closer include chinook salmon and white shark.
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Name of process whi ch can increase the rate of dissolving waterr in salt
Agitation and stirring will increase the rate of dissolving water in salt.
What is agitation and stirring?Agitation:
A fluid is agitated when it is made to flow mechanically through a vessel in a certain pattern, such as a circulatory one. The process of agitating a mixture involves the movement of one or more of its constituent parts to enhance contact. A liquid's usual properties will change as a result of vigorous agitation, especially with water, which reduces the liquid's aggregation.
Stirring:
To stir is to continually or repeatedly move one's hand through something (such a liquid or another substance) in order to cool, mix, agitate, dissolve, etc. any or all of the component parts: to use a spoon to stir your coffee.
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The muscles that retract the scapula are the?
Some bacterial cells are resistant to a variety of antimicrobials because they actively pump the drugs out of the cell.
True. Some bacterial cells are resistant to a variety of antimicrobials because they actively pump the drugs out of the cell.
A significant resistance mechanism in Gram-negative bacteria is drug efflux. It expel solutes from the cell. Antimicrobials and metabolites are just a few of the hazardous compounds that Efflux pumps help bacteria remove from their interior environments so they can regulate it.
The main efflux systems in Gram-negative bacteria are members of the RND superfamily and typically consist of an outer membrane protein channel, a periplasmic protein, and a cytoplasmic membrane pump. The most common example is MFS (such as Bmr and Blt in Bacillus subtilis) and the ABC transporters.
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There is a significant forward slippage on one vertebra in this lateral radiograph. which vertebra?
Its a degree of slippage of one vertebral body on the adjacent body. Spondylolisthesis is a condition , it occurs when vertebral body slips with respect to adjacent body of vertebra.
Its causes back pain but nor dangerous and not life long ,its normal . Medication and physical therapies can helpful.The treatment for slippage is depends on the severity of pain and vertebra slippage.
Non surgical treatment can helps ease pain and make stronger the bone.There are some initial symptoms of slippage such as pain in your lower back when your standing for a long or setting in improper way, pain spreading to your bottom or things.
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Select the reasons that farmers typically only specialize in one breed.
homogeneous housing
familiarity with the breed
business efficiency
standardized food supplies
lack of training
time demands
personal preference
This disease is caused by strains of streptococcus pyogenes which produce an erythrogenic toxin due to the presence of a lysogenized bacteriophage?
The scarlet fever and types of erythrogenic toxins are produced by the streptococcal strains.
The scarlet fever is a streptococcal disease. The erythrogenic toxins produced by GABHS are the cause of the rash of scarlet fever.
The scarlet fever is also known as "scarlatina" in old literature references.
It is a syndrome which is characterized by exudative pharyngitis ,fever, and bright-red exanthem. The cause of it is streptococcal pyrogenic exotoxins (SPEs) types which are as- A, B, and C produced by group A beta-hemolytic streptococci (GABHS) found in secretions and discharge from the nose, ears, throat, and skin.
Although scarlet fever may follow streptococcal wound infections or burns, as well as upper respiratory tract infections.
Attached with this is the image for Scarlet fever.
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What occurred in the red bacterial cell in generation 2? (click on the one correct answer.)
The mutation occurs in the red bacterial cell in generation 2.
An alteration in the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA is referred to as a mutation. DNA or RNA can be found in the viral genome.
Environmental elements known as mutagens are what trigger mutations. Radiation, chemicals, and pathogenic agents are examples of mutagens. Mutations may occur naturally spontaneously.
Red blood cells are impacted by thalassemia, a genetic blood condition. A change in the cell that produces hemoglobin is the cause of thalassemia. Anemia is brought on by the mutation's disruption of hemoglobin formation, which results in low hemoglobin levels and a rapid loss of red blood cells.
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A dull percussion note forward of the left midaxillary line around 10th rib in the abdomen is:_______.
A dull percussion note forward of the left maxillary line around 20th rib in the abdomen is indicative of splenetic enlargement.
Enlarged spleen can caused by any infection, or other liver diseases , blood diseases characterized by abnormal blood cells, problems with the lymph system, or other conditions.It can be reduced by by the number of healthy red blood cells , platelets and white cells in your bloodstream, leading to more infection again and again.
Depending on the severity the engaged spleen may return to normal size and function when the underlying disease is treated or resolved.Dullness is the normal sound when tissues that are dense such as liver.
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1) Based on your observations, what are the phenotype and genotype of the P1 plant? What did you deduce to be the genotype and phenotype of the P2?
2) Based on your observations, draw the Punnett square for the cross of the P1 and P2 parental plants.
Based on your observations, draw the Punnett square for the cross of the F1 plants.
Based on the Punnett square above, what is the percentage of offspring that are predicted to have purple stems and dwarf stem height? How did this compare to the results that you obtained in this lab?
Based on the Punnett square above, what is the percentage of offspring that are predicted to have non-purple stems and dwarf stem height? How did this compare to the results that you obtained in this lab?
Based on the Punnett square above, what is the percentage of offspring that are predicted to have purple stems and normal stem height? How did this compare to the results that you obtained in this lab?
Based on the Punnett square above, what is the percentage of offspring that are predicted to have non-purple stems and normal stem height? How did this compare to the results that you obtained in this lab?
Answer:
Explanation 2 because ishudbh
Photodecomposition, photomutagenicity and photocytotoxicity of retinyl palmitate under He-Ne laser photoirradiation and its effects on photodynamic therapy of cancer cells in vitro
The effects on photodynamic therapy of cancer cells in vitro is that retinyl palmitate (RP) can be used 24 h before PDT to enhance its effects. RP is not mutagenic under irradiation with He–Ne laser.
HeLa cells with or without RP (retinyl palmitate) that was incubated with the cells for a short or long incubation period prior to PDT are typically used to test the effects of PDT (photodynamic therapy) using hematoporphyrin derivatives (HpD) as photosensitizer under He-Ne laser irradiation.
No photodecomposition of RP alone is visible, but a small amount is seen of in the presence of HpD under He-Ne laser irradiation is seen. No photomutagenicity is often seen under laser irradiation. HeLa cell viability can be dramatically reduced by RP alone. A 24 hour incubation period before PDT increased the cytotoxicity of PDT on HeLa cells.
Therefore, retinyl palmitate (RP) can be used 24 h before PDT to enhance its effects. RP is not mutagenic under irradiation with He–Ne laser.
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Match each word to it's correct meaning.
1. chlorophyll
2. chloroplast
3. palisade layer
4. photosynthesis
small oval bodies containing
chlorophyll
layer of cells near the top surface of
the leaf that contains the chloroplasts
green chemical that performs
photosynthesis
food-making process in green
plants
Which events in meiosis are responsible for the principle of segregation? select all that apply
Separation of homologous chromosomes in anaphase 1 is responsible for the principle of segregation.
Mendel put out the law of segregation after noticing that true-breeding pea plants with opposing features produced F1 generations that all displayed the dominant trait and F2 generations that expressed the dominant and recessive traits in a 3:1 ratio. According to the law of segregation, each diploid individual has two alleles (copies) for a specific attribute. During meiosis, the two different alleles for a single gene segregate as the chromosomes divide into several gametes, resulting in each gamete acquiring one of the two alleles.The fundamental tenet of the rule is that copies of genes separate or segregate, resulting in just one allele being passed on to each gamete.Hence in anaphase 1 when the homologous chromosomes are pulled apart the alleles also segregate.learn more about homologous chromosomes here: https://brainly.com/question/8253366
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the chambers in the lower part of the heart , which pump blood to the rest of the body , are called ______
The chamber in the lower part of the heart, which pump blood to the rest of the body, are right ventricle and left ventricle.
what is the lower part of the heart ?
The lower two chambers are known as ventricles, and the upper two are known as atria (singular form: atrium) (singular: ventricle). The septa or septum, that are muscular walls, divide the heart into two sides. The right atrium and ventricle of the heart work together to pump oxygen-poor blood to the lungs.
how many chambers are there in the heart ?
There are four chambers in the heart. left and right ventricle and left and right atria.
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What is magmatic differentiation? how might this process lead to the formation of several different igneous rocks from a single magma?
Magmatic differentiation entails approaches by the way in which chemically one-of-a-kind igneous rocks, along with basalt and granite, can shape from the same initial magma excessive-temperature minerals can crystallize and settle out, causing the ultimate molten fabric to be focused with components that may later form rock enriched in low-temperature minerals (along with granite).
The technique by means of which chemically specific igneous rocks, such as basalt and granite, can shape from the equal initial magma.
Magmatic differentiation can arise by way of the chemical response between the magma and the first crystals to solidify out of it, or by the physical separation of the first crystals that shape from the ultimate magma, both thru settling to the bottom of a magma chamber or thru crustal deformations that purpose the remaining magma to be squeezed out to cool in veins.
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PLS HELPPP WILL MARK BRAINLIEST IM DESPARETE
The patella is a(n) _____________bone found in the ___________________. (2 points)
long; appendicular skeleton
irregular; appendicular skeleton
flat; axial skeleton
short; axial skeleton
In the case above, the patella is a irregular bone found in the appendicular skeleton.
Where is the patella in the knee?The patella is known to be a bones of the Appendicular skeleton and it is one that can be seen or found in front of the knee joint and it is at the spot where the thighbone (femur) and shinbone (tibia) is said to meet.
Note that In the case above, the patella is a irregular bone found in the appendicular skeleton precisely on the knees of humans.
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Explain various type of work.
Work: According to physics, work is defined as when a force acting on a body causes it to move a given distance. Work is a scalar number because it is the dot or scalar product of two vectors (force and displacement).
Types of work
1. Reactionary Work
In the present day, Reactionary Work takes up the majority of our waking hours since we are solely concerned with reacting to messages and demands that come in the form of emails, texts, F4cebook messages, tweets, voicemails, and the list goes on. Instead of taking the initiative in the areas that mean the most to you, you are continuously responding to what is presented to you. You cannot let Reactionary Work overwhelm you, even though it is vital.
2. Planning Work
You must plan how you will accomplish your tasks at other times. Planning work covers the time spent, arranging and prioritizing your time, creating meeting management systems, and perfecting working management systems. Planning involves determining how to spend your energy and creating a strategy for accomplishing your goals. The most engaging processes are highly customized, oftentimes on the verge of becoming neurotic, yet they keep us interested. Planning work may not seem alluring, yet it may increase your productivity and help you achieve your objectives.
3. Procedural Work
Of course, there are a lot of daily actions we take that are neither tactical nor retaliatory. The administrative and maintenance tasks that we perform to stay afloat are referred to as procedural work. Examples include making sure that the bills are paid, filing taxes, updating a presentation deck, and tracking previous outgoing emails to ensure that they were handled or resolved. Although procedural work is crucial, we must always keep an open mind when approaching it. When procedures become outdated and are followed simply out of habit rather than need, they backfire.
4. Insecurity Work
Insecurity Work includes the activities we engage in as a result of our own fears, such as frequently checking internet reviews of you or your goods or compulsively studying certain company statistics. While quickly convincing us that everything is OK, insecurity work doesn't advance the situation at all, and we frequently aren't even aware that we're engaging in it.
5. Problem-Solving Work
The most crucial time for creativity is during problem-solving tasks. Whether we are building a new interface, creating a new business strategy, crafting an insightful blog post, or outlining the features of a new product, this is the task that demands all of our mental capacity and attention. You use pure ingenuity to develop solutions whether you're working alone or with a team.
The most engaging processes are highly customized, oftentimes on the verge of becoming neurotic, yet they keep us interested.
what is the sound producing organ in rabbit
The larynx is the sound producing organ in a rabbit.
Describing the shape of a spider web observed during an investigation of
living and non-living things in your backyard is an example of *blank*
measurement.
Describing the shape of a spider web observed is an example of nominal measurement.
What is Nominal measurement?This is a type of measurement in which the data or variables are named without any specific order unlike ordinal measurement.
The shape of the web was described without any emphasis on the order which is why it was chosen as the most appropriate choice.
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What do both the set point hypothesis and the settling point hypothesis seek to explain?
Both the set point hypothesis and the settling point hypothesis seek to explain how multiple, interacting factors determine body weight.
What is a hypothesis?A hypothesis is a statement defining the relation between two or multiple variables that has to be tested to find the truth of the relationship.A good hypothesis should be precise, given as a statement, should be able to be tested, contains at least two variables.According to set point hypothesis, our DNA contains baseline information about our body weight. The change of our body weight from a specific set point given in the DNA is limited. Each body has its specific set point and tries to stay in that range.Settling point hypothesis also determines how our body controls weight, According to this hypothesis; our weight is maintained by the feedbacks which are controlled by specific genes present in the DNA.Learn more about hypothesis here:
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How does the structure of the digestive tract in different invertebrate groups affect the size of the organisms that they can eat
Answer:
Sponges and Cnidarians have a central body cavity and not a digestive system
Explanation:
A single-cell atlas of non-alcoholic fatty livers identifies regulatory genes that control de novo lipogenesis
A Final statement or concluding statement
It should be noted that not all gut microbiota promote fatty liver disease; some strains act as "probiotics," mitigating the negative effects of other gut microflora.
This is supported by evidence that butyrate, as demonstrated in NAFLD rat models, may be the mechanism by which some bacteria inhibit progression from benign hepatic steatosis to NASH. Changes in the microbiome may thus influence an individual's risk of developing NAFLD, progressing to NASH, or developing the metabolic syndrome.
Hepatic de novo lipogenesis (DNL) is the biochemical process of synthesising fatty acids from acetylCoA subunits produced by a variety of cell pathways, most notably carbohydrate catabolism.
In addition to glucose, which is the most common source of carbon units for DNL, fructose is a profoundly lipogenic substrate that can drive DNL, which is significant given the increased use of fructose in corn syrup as a sweetener.
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The part of the brain stem that regulates vital activities such as heartbeat, breathing, and digestion is the:_____.
The part of the brain stem that regulates vital activities such as heartbeat,breathing and digestion is the Medulla oblongata. The bottom part of brain which regulate your breathing,heart rhythms,blood pressure and swallowing.
The respiratory center is located in the medulla oblongata and is involved in the minute-to-minute control of breathing.It's locate where the brain and spiral cord connect, it help in control vital processes like our heartbeat, breathing and blood pressure.
This also responsible for reflexes of the face and throat like - coughing,sneezing,gagging. It can lead to respiratory failure, loss of sensation, paralysis,it causes 'brain death" and person can not survive.
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What term is used to describe the capacity of some erythrocytes to vary in size, especially in relationship to some anemias?
The term used to describe the capacity of some erythrocytes to vary in size, in relationship to some anemias is called Anisocytosis.
Additional descriptors of erythrocytes associated with some anemias include anisocytosis (assuming various sizes) or poikilocytosis (assuming various shapes).
Anisocytosis means that there are red blood cells of varying sizes on your blood smear. Poikilocytosis means that there are red blood cells of varying shapes on your blood smear.
The usual treatment for iron deficiency is taking iron supplements and changing the diet to increase iron levels through iron-rich foods. The most common supplement is ferrous sulfate, which is taken as a tablet.
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Identify the function of the highlighted structure. transports urine to the urinary bladder carries fecal matter to the anus transports urine to the exterior
The urethra transports urine to the urinary bladder carries fecal matter to the anus transports urine to the exterior.
How is urine transported into the bladder?
The urinary system's ureters are responsible for filtering blood and producing urine as a waste product. The two tubes are known as ureters transport urine from the kidneys to the bladder. The ureters are between eight and ten inches long. A muscular tube called a ureter empties urine into the bladder. The bladder is the organ where pee is kept before it can be removed. Over time, smooth muscle contractions in the walls of the ureters deliver urine into the bladder in little bursts.
A kidney infection may manifest if urine is allowed to pool or back up. A muscular pouch called the urinary bladder stores urine until it is expelled from the body.
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The Conservation Reserve Program pays farmers to ________. grow native crops such as corn and beans experiment growing new varieties of GM crops stop growing tobacco pasture cattle instead of growing crops stop cultivating highly erodible land
The Conservation Reserve Program pays farmers to stop cultivating highly erodible land.
The Conservation Reserve Program is a cost-share and rental payment program of the united states department of Agriculture. CRP is a land conservation program administered by the Farm carrier enterprise (FSA). In change for every year rental price, farmers enrolled in the program agree to put off environmentally sensitive land from agricultural production and plant species in order to improve environmental health and quality.
The long-term purpose of the program is to re-establish valuable land cover to help improve water quality, prevent soil erosion, and decrease the loss of flora and fauna.
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Which cell type is the most numerous white blood cell in circulation, is the first leukocyte recruited from the bloodstream to injured tissues, and releases potent antimicrobial peptides
Neutrophils are the most numerous leukocytes in circulation, it is the first leukocyte recruited from the bloodstream to injured tissues, and releases potent antimicrobial peptides.
Neutrophils are a type of white blood cell, they are granulated and have a multilobed nucleus. The cytoplasmic granules contain microbicidal substances.
The major functions of neutrophils are:
Destroying the pathogen by phagocytosis.Disintegrating the bacterial toxins Helping other immune cells to generate an immune response against the invading pathogen.Neutrophils play a very important role in immune functions as they are the first cells to travel to the site of infection and disintegrate the pathogen by microbicidal substances in their granules and by phagocytosis.
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