Which one of the following is not a bone of the human leg?
(a) Fibula
(b) Femur
(c) Humerus
(d) Tibia
Answers
The correct option (c) Humerus, g is not a bone of the human leg.
Sixty bones make up each arm and leg, with thirty bones in each arm running from upper arms to fingers and thirty bones in each leg running from thigh to toe. The longest bones are the femur and humerus, one of which is located in the upper arm and the other in the thigh.Thirty bones make up a human leg: the femur in the thigh, the patella in the knee, the tibia and fibula in the lower legs, the tarsals in the ankles, the metatarsals in the sole, and the phalanges in the toes.The humerus in the upper arms, the radius and ulna in the forearm, the carpals in the wrist, the metacarpals in the palm, and the phalanges in the fingers make up the bones of the arm. Since the humerus is found in the arm, it cannot be a human bone.
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Related Questions
pruning (with respect to neurological development) refers to the process by which synapses that are not used are extinguished.
T/F
Answers
True. Pruning, in the context of neurological development, refers to the process through which synapses that are not frequently used or activated are eliminated.
It is a crucial mechanism in brain development that occurs during childhood and adolescence.During early brain development, there is an overabundance of synapses, forming an intricate network. However, not all of these synapses are necessary for optimal brain functioning.
Through the process of pruning, the brain refines its neural connections by eliminating weak or unused synapses, leading to a more efficient and streamlined neural network.
Pruning is influenced by various factors, including neural activity, experience, and environmental stimuli. Synapses that are frequently activated and involved in important neural pathways are strengthened, while those that are not used or receive little input are gradually eliminated.
This process helps shape the developing brain and optimize its functionality, allowing for more efficient information processing and neural communication.True is the answer.
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To move the objective lens up and down, I would turn the _________ __________ dial. Which two words complete the sentence?
Answers
Answer:
handle and the dial is the correct answer
In an African food chain, a zebra eats grass and then is eaten by a lion which eventually dies and is eaten by bacteria. What is the producer in this food chain?
Answers
Answer:
The Grass
Explanation:
10. Which of the following is NOT a function of a protein?
a. Providing Defense
b. Transporting Materials
c. Production of skin cells
d. Driving Cellular reactions
Answers
Answer:
d) driving cellular reaction
Explanation:
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Fill in the blanks with the appropriate anatomical term
The belly button is anterior to the_____________. (toes, spine)
Which is more posterior, toes or spine? _____________
Which is more superior, shoulder or hip?_____________
Which is more inferior, the head or hands?_____________
What is more medial, the lungs or the shoulders?____________
What is more lateral, the hand or hip?_____________
Which structure is not found bilaterally on the body?__________ (hands, feet, stomach, eyes)
Answers
Spine ,Shoulder ,Head ,Lungs ,Hand ,Stomach.
What is Spine?Spine is a JavaScript library that provides an efficient, cross-browser and feature-rich way to animate web page elements. It is designed to provide a minimalistic API and an easy-to-understand coding style that allows developers to create complex animation sequences with ease. Spine also allows developers to create interactive elements such as sliders, carousels, and accordions. Additionally, Spine is highly extensible and provides a wide range of options for customizing and optimizing animations. Ultimately, Spine helps developers to create animations that are both visually rich and functionally efficient.
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On a sunny day at an open market a vendor, ms. milly occasionally sprinkles water on her wilting lettuce. during the day ms. milly's lettuce are firm and ready for sale.(i) distinguish between 'diffusion' and 'osmosis'.(ii) identify the process that resulted in ms. milly's wilting lettuce becoming firm.
Answers
1)Diffusion is the process by which the particles of a substance move from an area of high concentration to an area of low concentration and osmosis is reverse of diffusion
2)osmosis is the process that resulted in ms. milly's wilting lettuce becoming firm.
(i) Distinguish between 'diffusion' and 'osmosis'. The main differences between the processes of diffusion and osmosis are: Diffusion is the process by which the particles of a substance move from an area of high concentration to an area of low concentration until an equilibrium is reached. Diffusion occurs across a semipermeable membrane or in a fluid medium. Diffusion is a spontaneous process and it is independent of the presence or absence of a solvent. When a solvent is present, it can accelerate the process of diffusion.
Osmosis is the movement of water from an area of high concentration to an area of low concentration through a semipermeable membrane. Osmosis occurs when a solvent (usually water) moves from a dilute solution (low concentration) to a concentrated solution (high concentration) through a semipermeable membrane. Osmosis is a type of passive transport because it does not require energy input from the cell or organism.
(ii) Identify the process that resulted in Ms. Milly's wilting lettuce becoming firm. Ms. Milly's lettuce wilted due to a lack of water. The process that resulted in Ms. Milly's wilting lettuce becoming firm is osmosis .Osmosis is the process by which water moves from an area of high concentration to an area of low concentration across a semipermeable membrane.
When Ms. Milly sprinkled water on her lettuce, the water moved into the lettuce through osmosis. The lettuce cells became turgid, or firm, as they filled with water. As a result, the lettuce was no longer wilted and was ready for sale.
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What does the theory of evolution tell us about how organisms adapt to their environment over time? (4 points)
a
Natural selection occurs before changes in the environment.
b
A population changes in response to a change in the environment.
c
Environmental changes can be predicted based on changes in a population.
d
Natural selection leads to the survival of the population with the most complex traits.
Answers
Answer:
B
A population changes in response to a change in the environment
Explanation:
Choices A and C should be able to be eliminated pretty quickly. Natural selection is where organisms ADAPT. In order for them to change THEY need to adapt to something DIFFERENT. The only thing the organism should be adapting to is the environment, therefore there should be a change in it. Choice D simply says that organisms only live in a change in environment when complex traits are in place, which simply isn’t true.
Imagine going back in history when giraffes were much shorter than what they are today. Their ENVIRONMENT had much more tall plants than smaller due to other organisms consuming them which led to the giraffe evolving into the tall animals we know today. Being as tall as they are today, those tall plants aren’t so high for them and allow them to get the nutrients and food they need.
An important regulator of electrolyte concentrations in extracellular fluids is .
Answers
Answer:
Mineralocorticoid
Explanation:
Answer:
Aldosterone
Explanation:
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Define cell membrane
Answers
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Two sound waves are moving through a medium at the same speed. If wave x has a greater frequency than wave y, then wave x
Answers
Correct Question:
Two sound waves (wave X and wave Y) are moving through a medium at the same speed. If wave X has a greater frequency than wave Y, then wave X
A. has a lower amplitude.
B. has a shorter wavelength.
C. has a longer wavelength.
D. has a greater amplitude.
Answer:
C. has a longer wavelength.
The basic equation of frequency and speed are
velocity = frequency x wavelength
When both waves' velocities are the same then
v1 = v2
f-1 x wavelenght-1 = f-2 x wavelenght-2
Now increasing frequency of wave X will increase the wavelength of wave Y for the equations to be equal.
How have modern advancements allowed this modern-day scientist to do research in a way that Darwin couldn’t?
Answers
Modern advancements have enabled this modern-day scientist to conduct research in a manner that Charles Darwin couldn't. These advancements have revolutionized various aspects of scientific investigation, providing scientists with unprecedented tools and opportunities for discovery.
1. Technological Innovations: The development of advanced laboratory equipment and tools has significantly enhanced the scientist's ability to analyze and manipulate biological samples. From high-resolution microscopes to gene sequencing machines, these advancements allow for a more detailed examination of organisms and their genetic makeup.
2. Computational Power: The availability of powerful computers and sophisticated algorithms has transformed the field of data analysis. Modern scientists can process vast amounts of genetic data, run complex simulations, and perform intricate statistical analyses. This computational power allows for more precise and comprehensive investigations, enabling them to uncover patterns and relationships that Darwin could only dream of.
3. Collaborative Research: The advent of the internet and digital communication has facilitated global collaboration among scientists. They can share data, exchange ideas, and work together on projects regardless of geographical barriers. This collaborative approach leads to a collective accumulation of knowledge and accelerates the pace of scientific discovery.
4. Access to Information: The digital age has made a wealth of scientific literature and research readily accessible. Scientists today can access an extensive database of previous studies, allowing them to build upon existing knowledge and make more informed hypotheses. Darwin, on the other hand, had limited access to scientific literature and relied mostly on firsthand observations.
5. Interdisciplinary Approaches: Modern scientists have the advantage of interdisciplinary collaboration, combining knowledge and techniques from multiple fields. By integrating biology, physics, chemistry, and other disciplines, researchers can approach problems from different angles, leading to deeper insights and innovative solutions.
In summary, modern advancements in technology, computation, collaboration, and access to information have empowered today's scientists to conduct research in ways that were unimaginable during Darwin's time. These advancements have expanded the scope of investigation, increased precision, and accelerated the pace of scientific discovery.
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A human neuron has 46 chromosomes. How many chromosomes are there in a human pancreatic cell?
Answers
Answer:
46
Explanation:
Their are 46 chromosomes in a human's pancreatic cell.
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what is responsible for a kitten becoming a cat, mitosis or meiosis
Answers
The kitten period, which lasts from 0 to 6 months of age, is the youngest stage of a cat's existence, and mitosis is responsible.
How a kitten becoming a cat?Mitosis is responsible for the growth of the organism makes somatic cells for the body and is necessary for the organism's life span.
Meiosis, often known as this procedure, is a component of sexual reproduction in cats (and in humans, dogs etc).
Therefore, mitosis is responsible, for a kitten becoming a cat, which is the growing phase in a cat's life span.
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how can you possibly believe in evolution? that would mean that an elephant evolved from a mouse and that's just ridiculous. what kind of fallacy
Answers
Strawman, red herring. The red herring fallacy is a type of informal fallacy that belongs to the category of relevance fallacies. Contrary to a straw man, which includes misrepresenting the opposing side's stance, a red herring is a deceptively convincing but ultimately pointless diversionary evolution.
presenting a fringe as well as extreme interpretation of a competing position as the accepted one: Saying, for instance, that all vegans are against all kinds captivity, including pet ownership, would be a straw man. This fallacy involves focusing on something that has only a passing relationship to the main issue in order to distract people from the genuine problem.Strawman, red herring. The red herring fallacy is a type of informal fallacy that belongs to the category of relevance fallacies. Contrary to a straw man, which includes misrepresenting the opposing side's stance, a red herring is a deceptively convincing but ultimately pointless diversionary evolution. Examples: Wow, Dad, it's extremely tough to make ends meet on my wage, my son said. Father: "Son, count yourself lucky. Why, I barely made $40 a week and when I was your age."
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Assingent
State the
the use of
stir up pump
Answers
Answer:
I think its with used to mix medicinal drugs or administer them
Explain how mitosis maintains the chromosome number
of the original cells when forming new cells.
Answers
Relation between mitosis and chromosomes:
During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells. Because this process is so critical, the steps of mitosis are carefully controlled by certain genes. As they move, they pull the one copy of each chromosome with them to opposite poles of the cell. When mitosis is not regulated correctly, health problems such as cancer can result.When a cell divides by way of mitosis, it produces two clones of itself, each with the same number of chromosomes.
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Choosing organisms from four different trophic levels of this four web as examples, explain how energy is obtained at each trophic level.
Answers
In any ecosystem, there are four different trophic levels: producers, primary consumers, secondary consumers, and tertiary consumers. Each level of the food web represents a different source of energy, and organisms at each level must obtain energy from the level below them.
Let us take the example of an ecosystem in which grass is the primary producer, rabbits are the primary consumers, foxes are the secondary consumers, and hawks are the tertiary consumers.
Here is how energy is obtained at each trophic level:
Grass (producer): Grass is a photosynthetic organism that uses energy from the sun to produce food through the process of photosynthesis. In this process, light energy is converted into chemical energy, which is stored in the form of glucose. This glucose is used by the grass as a source of energy.
Rabbits (primary consumer): Rabbits are herbivorous animals that eat grass as their primary food source. They obtain energy from the grass through digestion and use this energy for various activities such as movement, reproduction, and maintenance of bodily functions.
Foxes (secondary consumer): Foxes are carnivorous animals that feed on rabbits. They obtain energy from the rabbits they consume and use this energy for various activities such as movement, reproduction, and maintenance of bodily functions.
Hawks (tertiary consumer): Hawks are apex predators that feed on foxes. They obtain energy from the foxes they consume and use this energy for various activities such as movement, reproduction, and maintenance of bodily functions.
Therefore, the energy is passed through different trophic levels in an ecosystem through the consumption of organisms at each level by organisms at the next level.
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What are thallophytes? Give any two examples.
Answers
Answer:
Thallophyta is a division of the plant kingdom including primitive forms of plant life showing a simple plant body .
For example: algae , Ulothrix
A bud forms on what part(s) of the plants during vegetative reproduction?
A.Roots
B.Stems
C.Leaves
D.A and B
E.A,B and C
Answers
Answer:
E.A,B and C
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What is one function that exocytosis carries out in the human body?
Answers
Answer:
Exocytosis is used by a number of cells in the body as a means of transporting proteins and for cell to cell communication. In the pancreas, small clusters of cells called islets of Langerhans produce the hormones insulin and glucagon.
Explanation:
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A) All biomolecules have the following traits except
covalent bonds.
hydrogen elements.
nitrogen elements.
a carbon backbone.
Answers
biomolecules are molecules involved in life processes, meaning that most contain elements of carbon, oxygen, and hydrogen. molecules are held together by covalent bonds, eliminating option a.
All biomolecules have the following traits except: nitrogen elements.
Biomolecules are the chemical compounds that make up living matter. They result from the union of bioelements by chemical bonds, among which the covalent ones stand out.
About biomolecules:
• Atoms that make up organic molecules are linked by covalent bonds. It is a very strong bond.
• They are formed by chemical substances composed mainly by carbon, oxygen and hydrogen mainly.
• The organic molecules found in living things are made up of a “backbone” of carbon.
To this are attached groups of atoms, called functional groups, which determine the characteristics and chemical reactivity of the molecules.
Therefore, we can conclude that biomolecules are mainly composed of carbon, oxygen and hydrogen and derive their final configuration from the arrangement of their carbon atoms, which constitute the skeleton or backbone.
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Q2) 60% A compression refrigeration system (36000 BTU/hr) is used for cooling a space. To ensure a good performance the evaporator set to work at 2 bar however, the area of the evaporator is increased by 15% for superheating vapor by 6 "C before entering the compressor. In the condenser side the setting was at 16.03 bar and the area increased by 15% to cool the refrigerant by 10 °C before leaving the condenser. A technician gave an advice that using a fan to cool down condenser more, then the refrigerant cooled by further (more cooling) 12 "C. Each stroke equals 1.5 piston diameter. The compressor runs with 900 resolutions per minute. Assume the refrigerant is R134a, find 1-draw the processes on p-h diagram before and after using the fan 2- find the flash gas ratio before and after using the fan 3- The stroke length and piston diameter? 4- COP of the system before and after using the cooling fan?
Answers
Q2)60% A compression refrigeration system (36000 BTU/hr) is used for cooling a space. To ensure good performance, the evaporator is set to work at 2 bar, and the area of the evaporator is increased by 15% for superheating vapor by 6 "C before entering the compressor. In the condenser side, the setting was at 16.03 bar, and the area increased by 15% to cool the refrigerant by 10 °C before leaving the condenser. A technician advised using a fan to cool down the condenser more, then the refrigerant cooled by a further (more cooling) 12 "C. Each stroke equals 1.5 piston diameter, and the compressor runs with 900 resolutions per minute. Assume the refrigerant is R134a.
1) The process on the p-h diagram before and after using the fan is shown below:
As shown in the diagram, initially the refrigerant is at point 1 on the p-h chart. The refrigerant passes through the evaporator before entering the compressor, and the evaporator's area is increased by 15%. The refrigerant is superheated by 6°C before entering the compressor. The refrigerant leaves the compressor and passes through the condenser before reaching point 2.
The area of the condenser is increased by 15%, and the refrigerant is cooled by 10°C. If the technician's recommendation to use a fan to cool down the condenser more is followed, the refrigerant will cool by a further 12°C, and point 3 will be obtained on the p-h diagram.
2) Flash gas ratio before and after using the fan:
Before using the fan, flash gas ratio = 0.0295
After using the fan, flash gas ratio = 0.0339
3) Calculation of stroke length and piston diameter:
Given: Each stroke = 1.5 piston diameter
Let the piston diameter be 'D'.
Length of stroke = 1.5D
To find D,
we can use the following formula:
N = (2 × L × f) ÷ D
Where:
N = number of cylinders
L = length of stroke = 1.5
Df = compressor's speed = 900 RPM
Given that the compressor's speed is 900 RPM,
60 cycles per second or 60 Hz of supply frequency can be obtained.
The number of working cycles required per minute can be obtained by multiplying this frequency by the number of cylinders.
So, N = 900 RPM ÷ 60 × 2N = 30
Substituting the values in the formula, N = (2 × 1.5D × 30) ÷ D
Therefore, 3D = D × 60/2
Hence, D = 10 cm
4) Calculation of COP of the system before and after using the cooling fan:
Before using the fan:
COP = QL / WHC
where, QL = heat extracted from the evaporator = 36000 BTU/hr
WHC = work done by the compressor = h1 - h4 = 298.5 - 132.16 = 166.34 BTU/hr
So, COP before using the fan = 36000 / 166.34 = 216.32
After using the fan:
COP = QL / (WHC + WHF)
where WHF is work done by the fan.
So, WHF = (h2 - h3) x 3600 / t
where,h2 = enthalpy at point 2
h3 = enthalpy at point 3
t = time in seconds= 12 / (3600) = 0.00333 hours
Thus, WHF = (221.22 - 146.22) × 3600 / 0.00333 = 40236000 / (166.34 + 402) = 90.92
Therefore, COP after using the fan = 90.92.
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eukaroyitic cells and prokaroytic cells describe 3 ways that the two types differ. what do you think is the biggest misconception between the 2 cells course hero
Answers
eukaryotic cells and prokaryotic cells differs in presence of nuclear membrane structure, membrane bound organelles and size of ribosomes.
prokaryotic cells are unicellular structure with smaller size. They do not have well defined nucleus and membrane bound organelles like endoplasmic reticulum, mitochondria, chloroplast, etc. They have smaller ribosomes and simpler flagella. They also have plasmid in the cytoplasm.
Eurkaryotic cell bigger in size. They have well-defined nucleus with membrane bound organelles like endoplasmic reticulum, mitochondria, chloroplast, etc. They have bigger ribosomes and complex flagellar structure. They rarely have plasmid in cytoplasm.
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1. How can embryology be used to explain evolution?
2. What are fossils? How are fossils used to explain evolution?
Answers
Answer: 1. Embryology, the study of the development of the anatomy of an organism to its adult form, provides evidence for evolution as embryo formation in widely-divergent groups of organisms tends to be conserved. ... Another form of evidence of evolution is the convergence of form in organisms that share similar environments. 2. Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. mark brainliest
Explanation:
what does this line of a poem mean
"Funny it seems, but by keeping it's dreams, it learned to breathe fresh air. Long live the rose that grew from concrete when no one else ever cared."
Answers
Proving nature's law is wrong it learned to walk with out having feet. Funny it seems, but by keeping it's dreams, it learned to breathe fresh air. Long live the rose that grew from concrete when no one else ever cared. Tupac Shakur.
Why is sweat so effective in cooling our bodies?
O It has salt with a low specific heat.
O It is a liquid with a low specific heat.
O it is a liquid with a high specific heat.
O It has salt with a high specific heat.
Answers
Sweat is effective in cooling our bodies because it is a liquid with a low specific heat and contains salt, which also has a low specific heat. This helps to absorb and dissipate heat from the body, cooling it down.
What is Liquid?Liquid is a state of matter that has a distinct volume but no fixed shape, meaning that it can take the shape of any container it is placed in. Liquids are made up of particles that are held together by forces of attraction, allowing them to flow freely. Compared to solids, the particles of a liquid are free to move around and slide past one another, giving them the ability to take the shape of a container.
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which of the following statements is correct? individuals do not evolve, genes do evolve. individuals do not evolve, populations do evolve
Answers
The correct statement is "individuals do not evolve, populations do evolve."
Evolution is a process that occurs over generations, and it involves changes in the genetic makeup of populations. Individuals cannot evolve because their genes remain constant throughout their lifetime. However, populations evolve as the frequency of certain genes changes within the group, either due to natural selection, genetic drift, gene flow, or mutation.
These changes ultimately lead to the development of new traits, adaptations, and sometimes, the emergence of new species.
While individuals themselves do not evolve, their genetic makeup contributes to the evolutionary process that occurs at the population level over generations.
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If an animal does not consume glucose, how is the body still aback to obtain energy needed for cell processes
Answers
Answer:
through gluconeogenesis
Explanation:
Definition of gluconeogenesis
What advances are bioengineers making in artificial organ transplants?
Answers
The science of transplantation has advanced. Researchers and scientists are developing human organs, "printing" tumours to test the efficiency of chemotherapies
what is organ transplant mean ?
Organ and tissue transplant types
The heart, kidneys, liver, lungs, intestine, and pancreas are among the organs that can be transplanted in Australia. Heart valves, bone, tendons, ligaments, skin, and components of the eye can all be transplanted.
If you have an organ that is no longer functioning properly, you may require an organ transplant (end-stage organ failure). After all other therapies have been exhausted, an organ transplant is frequently explored. If doctors believe the transplant would save your life, it may be an option.
A transplant can also be used to improve someone's quality of life, such as a kidney transplant for someone who has renal failure.
The science of transplantation has advanced. Researchers and scientists are developing human organs, "printing" tumours to test the efficiency of chemotherapies, and inventing thought-controlled prosthetic limbs using improvements in technology such as 3D printing and biological/mechanical communication.
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nitrogenous bases function and importance
Answers
A nitrogenous base is an organic molecule that functions as a base in chemical processes and contains the element nitrogen.
What is the function of nitrogenous bases?What are nitrogenous compounds' purposes and significance?One of the essential components for the survival of life is nitrogen (N). Being a plentiful common element on earth, it makes up around 78% of the atmosphere.Organic nitrates, nitric acid, ammonia, and cyanides are just a few of the various substances that react chemically with nitrogen to create new molecules with entirely distinct chemical and physical properties. Plants must absorb nitrogen in the forms of ammonium and nitrate
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