thus far, there is agreement that all hominins found outside africa are members of which taxonomic group?
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Thus far, there is agreement that all hominins found outside Africa are members of Homo taxonomic group.
A number of breathtaking Palaeontological finds have cast doubt on the conventional theory of human evolution and the manner in which early man colonized the globe. These findings imply that Africa was not the only place where humans first evolved.
A small number of prehistoric human skulls discovered by archaeologists two hours from Tbilisi, the capital of Georgia, point to a Eurasian phase in the lengthy history of human evolution.
The skulls, jawbones, and shards of limb bones show that our ancestors left Africa far earlier than previously believed, spent a significant amount of time in Eurasia, and then returned to Africa to finish the tale of man.The Dmanisi hominins are the first members of our own genus, Homo, to be found outside of Africa, and they currently make up the most primitive group of the Homo erectus species.
They might be the ancestors of all later groups of Homo erectus, which would point to a Eurasian origin for this species.
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Related Questions
as molecular techniques improve, scientists are finding it necessary to reclassify some genera.
True or false
Answers
Answer:
True
Hope this helps :) !!!
True. As molecular techniques improve, scientists are finding it necessary to reclassify some genera.
This is because the molecular techniques provide additional information that allows scientists to better understand the relationships between different species, and therefore, they may need to be reclassified into different genera.To give a long answer, the traditional classification of organisms was based on observable characteristics such as morphology, behavior, and anatomy. However, with the advent of molecular techniques such as DNA sequencing and genotyping, it has become possible to analyze the genetic makeup of different organisms in much greater detail.
This has led to new insights into the evolutionary history of various species and has necessitated a reclassification of some genera.In some cases, scientists have found that two species that were previously thought to be in different genera are actually more closely related than previously believed. In other cases, they have found that a single genus actually contains multiple distinct groups that should be classified separately. These reclassifications can have important implications for how organisms are studied and managed, and they highlight the ongoing importance of molecular techniques in modern biological research.
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Mitochondria replicate themselves and even contain a small amount of
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Answer:
I think it's a small amount of ATP
how many unexcused absences are allowed at school in georgia
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Which occurs in both the lytic cycle and the lysogenic cycle?
Answers
Answer: Hijacking of host cell's metabolic action
Answer: D is the answer.
Explanation:
What do the triangles represent on a topographic map. A mountain peak. B location of a ravine. C steepness of a slope. D distance between two areas.
Answers
Answer:
A. a mountain peak
Explanation:
This is the symbol used and universally known.
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A mountain peak triangles represent on a topographic map.
What are Mountain peak?It is impossible to describe the level of intense excitement one feels after completing a significant task. No matter where they are from, people want to have an oddball, weird trip that inspires them to keep going.
However, they do have a tendency to cause us to lose sight of the fact that there is always something higher to do in life. These include the common, brilliant peaks and mountains that rise to incredible altitudes and are just begging to be conquered.
The ancient ideal of pursuing and achieving exploits that will stamp their names for future generations has always attracted humans.
Therefore, A mountain peak triangles represent on a topographic map.
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true or false? in most fungi, fertilization is complete after the cells fuse together.
Answers
Answer:
True
Explanation:
In most fungi, fertilization is complete after the cells fuse together. in most fungi, fertilization is a two-step process consisting of the fusion of cells and then the fusion of nuclei in the fused cells. Where does meiosis occur in a mushroom?
Jackson, Mississippi is 212 miles south of Memphis, Tennessee. If it is 246 miles from Jackson to Mongomery, Alabama, and 328 miles from Memphis to Montgomery, find the measure of the α, the flight bearing from Jackson to Montgomery. Find the measure of β, the flight bearing from Memphis to Montgomery
Answers
Flight bearings refer to the angle or direction at which an aircraft or object is moving in relation to a reference point or geographic location. It is often measured in degrees clockwise from north.
The measure of α, the flight bearings from Jackson to Montgomery, can be found using the Law of Cosines. Given that Jackson is 212 miles south of Memphis and the distance from Jackson to Montgomery is 246 miles, we can use the Law of Cosines to calculate the measure of α. Similarly, the measure of β, the flight bearing from Memphis to Montgomery, can be found using the Law of Cosines with the given distances from Memphis to Montgomery (328 miles) and from Jackson to Montgomery (246 miles).
To calculate the measures of α and β, we can use the following equation:
cos(α) = (d₁² + d₃² - d₂²) / (2 * d₁ * d₃)
cos(β) = (d₂² + d₃² - d₁²) / (2 * d₂ * d₃)
where d₁, d₂, and d₃ represent the distances between the cities.
By substituting the given values into the equations, we can find the measures of α and β.
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When 2 or more organisms compete for the same resource there can be a variety of outcomes. What would be one of those outcomes?
Answers
Answer:
The biology branch deals with the relations between and physical environment of organisms.
Explanation:
The principle of competitive exclusion states that if two species occupy the same niche, they cannot exist together (competing for identical resources). Two species whose niche overlap can evolve to have different niches through natural selection, resulting in the distribution of resources.
In ecology, interspecific competition is a form of competition where individuals from different kinds compete in an ecosystem for the same resources (e.g. food or space)... There may be interspecific competition if people of two separate species share a limited resource within a single area.
Questions on The excretory system
Answers
The excretory system is a passive biological system that removes excess, unnecessary materials from an organism's body fluids in order to help maintain internal chemical homeostasis and prevent body damage.
The excretory system is what?Organs of the human excretory system enable the elimination of nitrogenous wastes from the body. The kidney, ureter, urinary bladder, and urethra are the primary excretory organs. Blood is filtered through the kidneys, and the result is urine.
The answers are follows
The first claim is accurate since diabetes either results in insufficient insulin production or insufficient insulin use by the body. Without insulin, blood glucose levels rise to an unmanageable level that your kidneys are unable to filter and reabsorb.The kidneys receive oxygenated blood from the heart through the renal artery.We discovered that the concentration of urea may be higher in the renal vein than in the renal artery after fruitless attempts to gauge the blood flow rate through the kidney.Nitrogenous wastes are typically present in the deoxygenated blood that passes through the renal vein.More glucose is found in the renal artery than the renal vein.To know more about excretory system, refer
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A trait whose development requires the action of thousands of genes but whose variation is due to variation atonly two loci is:a.Extranuclearb.Digenicc.Polygenicd.Meristic
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A trait whose development requires the action of thousands of genes but whose variation is due to variation at only two loci is A.) Extranuclear
The transfer of genes that exist outside the nucleus is known as extranuclear inheritance, sometimes known as cytoplasmic inheritance. It is prevalently recognized to occur in cytoplasmic organelles like mitochondria and chloroplasts or from cellular parasites like viruses or bacteria and is present in the majority of eukaryotes.
Additionally feasible is the extranuclear transfer of bacterial symbionts and viral genomes. Perinatal transmission is an illustration of viral genome transfer. During the perinatal period, which starts before delivery and lasts for roughly a month after birth, this happens from the mother to the fetus. Viral particles may transfer from mother to kid at this time via the bloodstream or breastfeeding. This is especially concerning for moms who have HIV or Hepatitis C. Additionally, hereditary symbiotic cytoplasmic bacteria are seen in creatures like flies.
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Full Question ;
A trait whose development requires the action of thousands of genes but whose variation is due to variation at only two loci is
A.) Extranuclear
B.) Digenic
C.) Polygenic
D.) Meristic
Summarize the process of DNA replication, being sure to include the following:
a. whether its conservative, semi-conservative, or dispersive
b. when it occurs
c. what the result is
d. the key enyzmes involve
Answers
Here are your following answers which going to be helpful for you
a. DNA replication is semi-conservative, meaning each new DNA molecule consists of one original strand and one newly synthesized strand.
b. It occurs during the S phase of the cell cycle, prior to cell division.
c. The result is two identical DNA molecules, each with one original strand and one newly synthesized strand, ensuring genetic information is accurately passed on to daughter cells.
d. Key enzymes involved in DNA replication include:
- DNA helicase: unwinds the double helix by breaking hydrogen bonds between the two strands
- DNA polymerase: synthesizes the new complementary DNA strand by adding nucleotides
- DNA primase: creates RNA primers to initiate DNA synthesis
- DNA ligase: seals gaps between DNA fragments, creating a continuous strand
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Name Student ID BIOL 1406 SECTION EXERCISE 8: CELLS PART 1 (PROKARYOTIC AND PLANT CELLS) LAB APRONS, GOGGLES, NITRILE GLOVES, AND CLOSED TOE SHOES REQUIRED! PRELAB QUESTIONS: 1. Which structures are found in all cells? Which type of cells have a nucleus and membrane-bound organelles?KaryaHIC ce 2. 3. Give two examples of prokaryotic cells. and 1odine 4. What chemical is added to the potato slide? Lugais What is the purpose of adding this chemical? (See Lab 6) 5. What is the name of the green disk shaped organelle that will be visible inside the Elodea lea cells? 6. Think of a possible answer. Do you expect to see the organelle named in question 5 when y look at the onion cells that are present underground in the onion plant? 7. How large is a cell that takes up ½ of the field of view under scanning power? (See Lab 7) 8. How large is a cell that takes up ¼ of the field of view under high power? (See Lab 7) 9. The outside cover around a plant cell is the (Textbook) side. 10. When returning a prepared slide to the slide box, the label should be on the 11. How do you prepare a wet mount? 12. How many glass slides with a cover slip will you use during lab? One 13. Where do you place the glass slide at the end of lab? 14. Which plant cells will you observe during lab? 15.How should you adjust the light when you observe each cell?
Answers
1. Structures found in all cells include the cell membrane, cytoplasm, and ribosomes. Eukaryotic cells have a nucleus and membrane-bound organelles.
2. Two examples of prokaryotic cells are bacteria and archaea.
3. The chemical added to the potato slide is Lugol's iodine solution. Its purpose is to stain the cells, making the structures more visible under the microscope.
4. The green disk-shaped organelle visible inside the Elodea leaf cells is the chloroplast.
5. It is not expected to see chloroplasts in onion cells since they are present underground and do not perform photosynthesis.
6. To determine the size of a cell that takes up ½ of the field of view under scanning power, refer to Lab 7 in your course materials.
7. To determine the size of a cell that takes up ¼ of the field of view under high power, refer to Lab 7 in your course materials.
8. The outside cover around a plant cell is the cell wall.
9. When returning a prepared slide to the slide box, the label should be on the top side.
10. To prepare a wet mount, place a drop of water on a glass slide, add the specimen, and then gently lower a cover slip onto the water droplet, avoiding air bubbles.
11. You will use one glass slide with a cover slip during lab.
12. At the end of the lab, place the glass slide in the designated location according to your lab instructor's instructions.
13. The plant cells you will observe during lab are Elodea and onion cells.
14. When observing each cell, adjust the light by using the diaphragm or rheostat to obtain the best image clarity and contrast.
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there is a heard of deer in a field that has an area of 6km^2 and a population of 54 deer. what is the population density of this herd of deer?
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PLEASE HELP
Which ethical view do you most agree with? Why?
1: save the environment
2: save the hungry
3:save my wallet
Answers
Answer:
that's more of a personal question but if u was answering that...
Explanation:
1. save the environment, because we live in the environment and without it none of us would be alive and the environment is something that affect us all
Save the environment is most important because they provide various important things. Hence, option A is correct.
What is an environment?The environment can be summed up as the effects of all living and non-living things that have an impact on human life. Non-living or abiotic elements include water, land, sunshine, rocks, and air, whereas all live or biotic elements are animals, plants, forests, fisheries, and birds.
The state of the environment has a direct impact on human health and well-being. Clean air and water, rich land for growing food, as well as energy and material inputs for production, are all provided by good natural surroundings.
Save environment is very important for the survival of every organism. Therefore, option A is correct.
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The ____________ pathway utilizes some of the structures in the limbic system to motivate individuals to repeat certain behaviors, such as eating, drinking, and mating. It does this through the release of the neurotransmitter, dopamine.
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The Mesolimbic dopamine pathway utilizes some of the structures in the limbic system to motivate individuals to repeat certain behaviors, such as eating, drinking, and mating. It does this through the release of the neurotransmitter, dopamine.
The Mesolimbic dopamine pathway is a reward pathway in the brain. It is made up of a group of neurons that transmit signals using the neurotransmitter dopamine. The Mesolimbic dopamine pathway is a crucial part of the limbic system, a set of structures in the brain that is associated with emotions and motivation.The Mesolimbic dopamine pathway is responsible for producing feelings of pleasure and reward in response to certain stimuli. For example, when you eat your favorite food, the Mesolimbic dopamine pathway is activated, which produces feelings of pleasure and satisfaction.Explain how it works:When an individual experiences something pleasurable, such as eating, the Mesolimbic dopamine pathway is activated.
This leads to the release of dopamine, a neurotransmitter that produces feelings of pleasure and reward. The more dopamine that is released, the stronger the feeling of pleasure and reward.Dopamine binds to receptors in the brain, which sends a signal to the nucleus accumbens, a region in the brain that is associated with reward and motivation. When the nucleus accumbens is activated, it produces feelings of pleasure and reward, which motivates the individual to repeat the behavior.In summary, the Mesolimbic dopamine pathway utilizes some of the structures in the limbic system to motivate individuals to repeat certain behaviors, such as eating, drinking, and mating. It does this through the release of the neurotransmitter, dopamine. This process produces feelings of pleasure and reward, which motivates individuals to repeat the behavior.
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In the plasma membrane, the phospholipid heads Group of answer choices are hydrophilic and face inward, shielded from water. are hydrophobic and face outward toward the aqueous solution on both sides of the membrane. are hydrophobic and face inward, shielded from water. are hydrophilic and face outward toward the aqueous solution on both sides of the membrane.
Answers
Answer:
are hydrophilic and face outward toward the aqueous solution on both sides of the membrane
Explanation:
The plasma membrane is structurally made up of a phospholipid bilayer, which is amphipathic in natire. This means that the phospholipid layer of the plasma membrane consists of phosphate head that is water loving or hydrophilic in nature and a lipid tail that is water fearing or hydrophobic in nature.
Since the phosphate head is HYDROPHILIC, they face outward toward the aqueous (water) solution on both sides of the membrane. This allows the phosphate head to attract water molecules.
if you consume one molecule of pyruvate , how many ATP molecules you are going to produce ?
1 NADH -> 3 ATP
1 FADH2 -> 2 ATP
Answers
A single molecule of pyruvate will generate 15 ATP molecules.
Pyruvate is an important chemical constituent according to biochemical science. It is the molecule that is produced from glycolysis, a process by which energy is derived from glucose. The carboxylate group of pyruvate is removed as carbon dioxide. The synthesized acetyl group is stimulated through its association with Coenzyme-A, thus, producing Acetyl Coenzyme-A.
The TCA cycle generates 15 ATP molecules through oxidation of Acetyl Co-A. Through oxidative decarboxylation as well as Krebs cycle, a single molecule of pyruvate (containing 3 Carbon atoms) gives rise to 4 molecules of NADH, a single molecule of FADH2 as well as one molecule of ATP.
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Out of the following four options, the concentration at which dsDNA will have the highest Tm is a.10 mm b.1000 μM c.100 mm d. 1M
Answers
The correct option is C: The concentration at which dsDNA will have the highest Tm is 100 mM.
Which concentration will result in the highest Tm for dsDNA?Out of the given options, the concentration at which double-stranded DNA (dsDNA) will have the highest melting temperature (Tm) is 100 mM. Tm is the temperature at which half of the DNA strands in a double helix become denatured or separated.
It is influenced by factors such as DNA sequence, length, and ionic conditions, including the concentration of ions in the solution. In general, increasing the concentration of salt ions, such as potassium or magnesium, can stabilize the double helix and raise the Tm.
In this context, a concentration of 100 mM is likely to provide an optimal ionic environment for maintaining the stability of dsDNA, resulting in a higher Tm compared to lower or higher concentrations. It is important to note that the Tm can vary based on the specific DNA sequence and experimental conditions.
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Which is a cause for a media disruption?
Outdated plugins
Flash reliance
Outdated definitions
JavaScript not installed
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ok ima make this simple so yall can earn some easy points name two viruses
Answers
Answer: Ebola and corona
During labor, certain hormones are released that cause the contraction of the uterus in order to push the baby out. When those hormones are sensed by the glands of the endocrine system, they secrete more of that hormone which keeps labor going until the baby is born.
Answers
Answer:
The endocrine system assists in maintaining and regulating different functions of the body by producing and discharging hormones. It comprises glands situated throughout the body, which produce chemicals known as hormones directly into the blood. The levels of hormones in the blood are monitored by a highly unique homeostatic mechanism known as feedback.
The two kinds of feedback are common, that is, negative and positive feedback, of this positive feedback, is the rare mechanism. It augments the changes done rather than opposing them. For example, the discharging of oxytocin from the posterior pituitary gland at the time of labor is an illustration of a positive feedback mechanism.
The stimulation of the muscle contractions, which pushes the baby via the birth canal is done by oxytocin. This discharging of oxytocin leads to an augmented or stronger contraction at the time of labor. This contraction is enhanced and intensify until the baby comes out of the birth canal. However, when the stimulus to the pressure receptor terminates, the generation of oxytocin ceases, which eventually results in the stopping of labor contractions.
Answer:
positive
Explanation:
e2020
the cells in this part of a plant transport water and nutrients throughout the plant. want is the most likely structure of specialized cells whose function it is to transport water and nutrients throughout a plant.
Answers
Answer:
Vascular tissue
Explanation:
The transparent portion of the fibrous tunic is the.
Answers
The transparent portion of the fibrous tunic is the cornea. The human eye is made up of three layers: the outer fibrous tunic, the middle vascular tunic, and the inner nervous tunic. The outer layer, also known as the fibrous tunic, includes the sclera and the cornea.
The sclera, which makes up the white of the eye, is a dense and opaque connective tissue layer that forms a protective and structural framework for the eye. On the other hand, the cornea is the transparent portion of the fibrous tunic that covers the front of the eye.It is transparent to allow light to pass through and enter the eye. The cornea is the first part of the eye that light encounters as it passes through the visual system. The cornea is a highly specialized tissue that is designed to be optically transparent and yet maintain a high degree of mechanical strength.Therefore, the transparent portion of the fibrous tunic is the cornea. It is an important structure in the eye that plays a vital role in our vision.
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which of these characteristics are adaptive? group of answer choices pathogen receptors are extremely varied responds more quickly upon secondary exposure to pathogens response takes several days to weeks to develop all of the answers are adaptive characteristics none of the answers are adaptive characteristics
Answers
The characteristics that are adaptive are the ones that enable the body to respond quickly to pathogens and cause an adaptive immune response.
The receptors of pathogens are extremely varied, and the response takes several days to weeks to develop. Both of these characteristics are adaptive. The immune system is a complex network of cells, organs, tissues, and molecules that interact with one another to protect the body from pathogens. It is made up of two main components: the innate immune system and the adaptive immune system. The innate immune system is the first line of defense against pathogens, and it includes physical barriers like skin and mucous membranes, as well as cellular and molecular defenses that recognize and respond to common pathogens. The adaptive immune system, on the other hand, is a more specialized response that recognizes and responds to specific pathogens. This system involves the production of antibodies, which are proteins that bind to specific pathogens and help to neutralize them. The characteristics that are adaptive are the ones that enable the body to respond quickly to pathogens on secondary exposure and cause an adaptive immune response. The receptors of pathogens are extremely varied, and the response takes several days to weeks to develop. Both of these characteristics are adaptive.Learn more about adaptive immunity: https://brainly.com/question/9979134
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certain types of dinosaurs were bipedal (walked on two legs). what is a good reason that these creatures invariably had long tails if they had long necks?
Answers
Answer: Dinosaurs with long necks had long tails to maintain a balanced center of mass.
Explanation:
A bipedal or bipedalism movement is one in which an organism moves with two limbs rather than four. Bipedal dinosaurs walked on two limbs, and bipedal activities consisted of running, walking, and hopping. Certain types of dinosaurs, particularly bipedal dinosaurs, have long tails when they have long necks because this provides a more stable body structure for the creatures. The tails of these dinosaurs had big, leg-powering muscles.
The presence of long necks raises the center of mass hence even a slight movement of the neck would cause instability or an unstable equilibrium therefore the animal can easily tumble. If a creature with only a long neck tried to walk, because its center of mass would be high it will not be rooted to the ground so it can easily fall because of air resistance and the pull of gravity. By moving in the opposite direction of the neck, the tail can aid in balancing.
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Why are groups of small cells better than one large cell at moving material in
and out?
O A. They have a greater surface-to-volume ratio.
о
B. They have more cell structures.
O C. They have a smaller volume.
O D. They have a lower surface-to-volume ratio.
Answers
Answer:
B po agot ko
Explanation:
Tagalog po ako
sharks have cargilaginous ksleetons because bone forming ability had not yet evolved in vertebrates when they orginated ____
Answers
the statement above is false
label the structure of the antibody and the antigen
Answers
Labels of the structure of the antibody and the antigen are as; (1) Variable region, (2) Constant region, (3) Disulfide bond, (4) Constant lite chain, (5) Constant heavy chain, (6) epitope.
The Y-shaped antibody has two huge identical heavy chains (H, which includes polypeptides of 50,000 Da or more) and two little identical light chains (L, which contains polypeptides of 22,000 Da). 5 is a heavy chain while 3 is a light chain. In the photo, di-sulfide bridge 3 connects light chains to heavier chains. Light and heavy chains have variable and constant regions. The upper variable section has a top antigen binding site and varies structure based on an antigen. Thus, variable region 1 has an antigen binding site at the top. The bottom constant structure is labelled 2. Antigen's antibody-binding epitope. The epitope is thus indicated by label 6.
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Humans (homo sapiens) can be considered decomposer type of organism. what is the human species? You, along with every other human being ...
Answers
The human species is a type of consumer in the food chain.
It is not accurate to consider humans as decomposers. Humans (homo sapiens) are a type of organism known as consumers. They consume organic matter, including plants and other animals, for energy and nutrients. Therefore, the human species is a type of consumer in the food chain.
The term "species" refers to a group of living organisms that share common characteristics and can interbreed to produce fertile offspring. Homo sapiens is the only surviving species of the genus Homo, which includes extinct species such as Homo neanderthalensis and Homo erectus. As a species, Homo sapiens is characterized by its ability to use complex language, develop advanced tools, and engage in social and cultural practices.
Thus the human species is a type of consumer and not decomposer in the food chain.
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In considering the cross YyRr x YyRr, the phenotype ratios of the F2 generation will be _____.
Answers
Answer:
f2
Explanation: