Answer:
Fibrous joints are the immovable joints which do not move so they are also known as fixed joints.
These joints are connected by the connective tissue made up of collagen protein. The length of these connective tissue fibres controls the movement of the bones like:
1. Suture joints have short fibres so they are mostly immobile.
2. Syndesmosis present between tibia and fibula in the ankle have slightly longer fibers so they can show movement if needed.
Thus, correct answer is collagen and length of these fibers.
Fibrous joints are stabilized by fibrous connective tissue, primarily strong collagen fibers, which prevent dislocation by holding bones tightly together and limit movement at the joint.
The element that gives fibrous joints their ability to resist stretching and thus control the amount of movement at the joint is the fibrous connective tissue. Fibrous joints are composed of strong collagen fibers that prevent dislocation at joints by firmly holding the bones together. Additionally, the presence of yellow elastic fibers can provide some degree of flexibility within these joints, though movement is typically very limited. There are three types of fibrous joints: sutures, which are found in the skull; syndesmoses, which bind bones together with longer fibers; and gomphoses, which are peg-and-socket joints.
4) Select the two characteristics below that describe RNA.
it is double-stranded
the sugar is called ribose
is only found in the cell's nucleus
its nitrogenous bases are A, G, T, and C
is translated in the cytoplasm
Answer:
Option (2) and (5).
Explanation:
RNA is present as a genetic material in some viruses only. RNA is a single stranded molecule that can be found in the nucleus as well as cytoplasm. The nitrogenous bases present in RNA are adenine, uracil, guanine and cytosine.
RNA contains ribose sugar in its structure. The translation of RNA occur in the cytoplasm by the process known as translation.
Thus, the correct answer is option (2) and (5).
2. If you can roll your tongue,
a) you have at least one copy of the dominant allele T
b) you have two copies of the recessive allele t
c) you must be male
d) you are haploid
Ans:
(A). You have at least one copy of the dominant allele T
Explanation:
Tongue rolling is the capability of individual to roll the tongue upwards in a tube-like structure. The muscles in the tongue allow this rolling movement.
Tongue rolling is related with genetic inheritance. Different genotype determines rolling of tongue. Individual with dominant allele(T) either heterozygous dominant(Tt) alleles or homozygous dominant(TT) alleles shows the tongue rolling trait. The homozygous recessive genotype will not show tongue rolling trait. So, tongue rolling trait is determined by a dominant allele.
Thus, the correct answer is option(A).
Explain the significance of blast cells in the peripheral blood.
Answer: Each cell is formed from a precursor cell. Blast cells are found in bone marrow. Blast cells are the precursors of blood cells like neutrophils,monocytes, lymphocytes, and erythrocytes. Usually blast cells are present in blood in low count.
High count of Blast cells shows abnormalities. As they are the precursors so high number of precursors cells shows less formation of blood cells. High count of Blast cells may lead to AML( Acute Myeloid Leukemia). AML patient have to go through CBC(complete blood count) Test to check abnormalities.
Explanation:
The site of most absorption of nutrients is the
a. stomach.
b. small intestine.
c. large intestine
d. all of the above
Answer: b. small intestine.
Explanation:
The small intestine is approximately 4.5 meters long in a living person but is 6 meters long at autopsy when the muscles relax. Digestion occurs primarily in the duodenum, which receives the pancreatic juice enzymes. The small intestine provides a large surface area for absorption. Glucose and amino acids from food are absorbed through the small intestine and enter the blood via the hepatic portal vein, going to the liver.
How does RNA leader sequence affect Trp operon syst
Answer:
The base pairing of complementary regions of RNA leader sequence determines if the transcription will be attenuated at the end of leader sequence or will continue for structural genes.
Explanation:
The RNA leader sequence of trp operon is the site where the transcription is initiated.
When tryptophan levels are high, translation of sequence 1 of the leader sequence is followed by base pairing between the complementary 3 and 4 regions of the leader sequence. The base pairing forms a terminator like attenuator and stops the expression of structural genes.
When tryptophan is not present, ribosome pauses at tryptophan codon of region 1 of the leader sequence. Hence, the regions 2 and 3 of the leader sequence base pair and prevents the formation of attenuator by not allowing the region 3 to pair with region 4.
What is the difference between an endocrine and an exocrine gland?
Answer:
The difference between an Endocrine and an Exocrine Gland is that Exocrine Gland are those glands that pour their product of secretion to the outside of the body ( have secretion channels) and Endocrine Glands are those that pour their product of secretion (hormones) into the bloodstream ( have no secretion channels).
Explanation:
The glands are structures that can be constituted by one or several cells, and that are formed from epithelial tissue. Their function is to secrete various substances, such as hormones, and they are classified as endocrine and exocrine, according to the place where they discharge their secretions.
The Endocrine Glands are very vascular structures, that is, irrigated by a large network of blood capillaries, thin and porous walls. These glands produce hormones that are poured directly into the bloodstream and transported by the blood vessels to the target tissues, where they come to perform their function. According to the chemical nature of the hormones produced by the endocrine glands, the organelles of the cells that constitute them can reach different degrees of development. For example the pancreas secretes insulin, which allows the body to regulate blood sugar levels.
The Exocrine Glands secrete substances through ducts directed to the surface of the body or to the interior of some organs. For example, exocrine glands are mucus-producing goblet cells, present in mucosal epithelia such as the lining of the intestine, and the sweat, sebaceous, and mammary glands. Tears are also produced by exocrine glands.
A second nerve impulse cannot be generated until ________. A. the Na ions have been pumped back into the cell B. the membrane potential has been reestablished C. proteins have been resynthesized D. all sodium gates are closed
Answer:
(B). the membrane potential has been reestablished
Explanation:
Nerve impulse can be defined as a signal that transmits along the nerve fibers. The neurons are said to be in resting phase when there is no nerve impulse.
When a stimulus is applied to resting membrane, sodium ions freely pass inside the cell and membrane is now said to be in depolarized phase. Due to this, a difference in electrical potential is generated across the membrane, known as nerve impulse or action potential.
When the action potential is over (after transmitting the nerve impulse through neuron) the cell membrane potential returns back by repolarizing the membrane.
Once the membrane potential is completely returned to its resting potential (when membrane potential is reestablished), the neurons become ready for second or next nerve stimulus.
Thus, the correct answer is option (B).
A second nerve impulse cannot be generated until the membrane potential has been re-established. Therefore option B is correct.
After a nerve impulse, the membrane potential of a neuron undergoes changes due to the movement of ions across the cell membrane.
During an action potential, the membrane depolarizes as sodium ions (Na+) rush into the cell, followed by repolarization as potassium ions (K+) move out of the cell.
Following the repolarization phase, the cell membrane needs to be restored to its resting state in order for another nerve impulse to be generated.
This process is called reestablishing the membrane potential. It involves the following steps: Sodium-Potassium Pump, Ion Channels, and Resting Membrane Potential.
Once the membrane potential is re-established, the neuron is ready to generate another action potential and transmit a new nerve impulse.
This process ensures that nerve impulses are transmitted in a coordinated and regulated manner.
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The formation of blood cells is a complex process. In most cases, the cells have been transformed ("morphed") from a previous cell type. The precursor cells from which each individual type of blood cell is formed through a series of maturation steps are called _________.
stem cells
progenitor cells
colony-forming units
blast cells
all of these choices
Answer:
The correct option is: (A) stem cells
Explanation:
The bone marrow is a semi-solid tissue which is generally found in the spongy portions of the bones. In the bone marrow, all the blood cells are produced from the unspecialized precursor cells, which are known as the stem cells. Firstly, the stem cells divide and form the immature blood cells. These immature blood cells then further divide and mature to form the mature blood cells.
Therefore, the stem cells are the precursor cells which transform and mature to form the blood cells.
1.) The headwaters of a stream are always located at a/an _______ elevation than the mouth of the stream.
2.) A stream’s velocity is _______ at the bottom and edges.
3.) A stream’s invisible _______ load represents (on average) about 15% of the mass of material transported.
4.) A stream with many rapids and waterfalls is likely a/an _______ stream.
5.) In a meander, water flowing around the outside of a curve flows _______ than water flowing around the inside of the curve.
6.) An oxbow lake can form near a/an _______ stream.
7.) A/An _______ is likely to form where a stream deposits sediment as it enters another body of water.
Answer:
higher
slowest
dissolved
youthful
faster
meandering
delta
Explanation:
Answer:
given below
Explanation:
1) higher
stream is located at higher location because of high head energy of the flow will be more.
2) small
at the bottom of the stream the energy head is small.
3) dissolved
dissolved invisible load will represent 15% of mass.
4) young
when the stream is young it has huge energy and the velocity is very high.
5) faster
water flowing outside the curve flow is faster than inside the curve.
6) meander
the zig zag movement of the river is called meander and the oxbow lake is found near meanders.
7) delta
delta is present when river falls in the oceans, all the river deposits sediments in the delta.
Assume that the red blood cell counts of women are normally distributed with a mean of 4.577 million cells per microliter and a standard deviation of 0.382 million cells per microliter. Approximately what percentage of women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter? Round to two decimal places. A. 16.11% B. 17.69% C. 82.26% D. 4.09%
Answer: C. 82.26%
Explanation:
Given : The red blood cell counts of women are normally distributed with
[tex]\mu=4.577\text{ million cells per microliter}[/tex]
[tex]\sigma=0.382\text{ million cells per microliter}[/tex]
Let X be the random variable that represents the red blood cell counts of randomly selected woman.
Z-score : [tex]z=\dfrac{X-\mu}{\sigma}[/tex]
For X=4.2
[tex]z=\dfrac{4.2-4.577}{0.382}\approx-0.99[/tex]
For X=5.4
[tex]z=\dfrac{5.4-4.577}{0.382}\approx2.1544[/tex]
Now, the probability that the women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter will be :-
[tex]P(4.2<X<5.4)=P(-0.99<z<2.15)\\\\=P(z<2.1544)-P(z<-0.99)\\\\=0.9843955-0.1618458=0.8225497\approx0.8226=82.26\%[/tex]
Hence, 82.26% of women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter.
Approximately 82.31% of women, when rounding to two decimal places, have red blood cell counts that fall within the normal range of 4.2 to 5.4 million cells per microliter. This is determined using z-scores and the normal distribution given the mean of 4.577 million cells/μl and the standard deviation of 0.382 million cells/μl.
Explanation:To find the percentage of women who have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter, we use the concept of the normal distribution and standard deviation. The given mean for women is 4.577 million cells/μl, and the standard deviation is 0.382 million cells/μl.
First, we convert the values of the normal range to z-scores using the formula:
Z = (X - μ) / σ
For the lower range (X = 4.2 million cells/μl):
Z = (4.2 - 4.577) / 0.382 ≈ -0.99
For the upper range (X = 5.4 million cells/μl):
Z = (5.4 - 4.577) / 0.382 ≈ 2.15
Using a z-score table, we find the area under the curve to the left of z = -0.99, which is roughly 0.1611 (16.11%) and to the left of z = 2.15, which is roughly 0.9842 (98.42%). To find the percentage between the two z-scores, we subtract the area of the lower z-score from the upper z-score:
Percentage = 98.42% - 16.11% ≈ 82.31%
After rounding to two decimal places, we get 82.31% which is most similar to option C (82.26%).
Therefore, approximately 82.31% percent of women have red blood cell counts in the range from 4.2 to 5.4 million cells per microliter.
List 4 pathogenic viruses and the diseases they cause in human.
Explanation:
some of the example of bacterial diseases are syphills,pneumonia,tetanus,and tuberculosis.diseases cause by viruses are chickenpox,small pox,measles,polio.
Where are ganglia of the parasympathetic division located?
Answer: The parasympathetic ganglia spread out diffusely in the vicinity of the viscera, they are located near the organ.
Explanation:
The autonomic peripheral nervous system can be subdivided into three subsystems: sympathetic, parasympathetic and enteric system, based on anatomy and functions. Parasympathetic preganglionic neurons are located in the sacral marrow, in the segments from S2 to S4, in the intermediate-lateral column that the parasympathetic autonomic ganglia are located, very close to or in the organ itself.
What is the process by which individuals regain neurological function following an injury to the nervous system?
Answer:
Neuroregeneration is the process by which individuals regain neurological function following an injury to the nervous system
Explanation:
The body cell repairs or regenerates by the process of Neuroregeneration. The process allows formation of new neuron cells. The neuroregeneration process is different in PNS and CNS. During accidents, falls or assaults, this process starts generating new cells (neurons) and repairing of tissues present in the nervous system. The PNS composed of spinal and cranial nerves. The CNS composed of spinal cord and brain.
Neuroplasticity allows individuals to regain neurological function following an injury by creating new neural connections or rewiring existing ones. Option b is correct.
Neuroplasticity refers to the ability of the brain to change and adapt in response to damage, creating new neural connections or rewiring existing ones. This process can involve various mechanisms such as the creation of new synapses, the pruning of unused synapses, changes in glial cells, and the birth of new neurons.
For example, after a stroke, the brain has the capacity to 'rewire' itself to compensate for lost functions by strengthening other neural pathways. Although this capacity is more pronounced in children, adult brains are also capable of significant changes. Environmental factors like stimulation, as well as internal factors like hormones and genes, can influence the extent of neuroplasticity.
Neuronal recovery varies between the central and peripheral nervous systems. While neurons in the central nervous system (CNS) typically do not regenerate, peripheral neurons often regrow, which is why sensations can gradually return after peripheral nerve injuries such as deep cuts on the skin.
NeuroplasticityNeuronal recoveryPeripheral neuronsComplete question as follows:
What is the process by which individuals regain neurological function following an injury to the nervous system?.
a. axon regeneration
b. neuroplasticity
The region between the tip and the shaft of a long bone is the ______________.
Answer:
The region between the tip and the shaft of a long bone is the metaphysis.
Explanation:
The metaphysis contains the growth plate, which is the part of the bone that grows during childhood. As it grows it starts to get harder along the tip and the shaft of the long bone.
1-. What energy source is directly used to drive the final enzyme in oxygenated, cellular respiration, the ATP synthase?
a. Proton Motive Force
b. Calvin cycle
c. Acetyl Co-A breakdown
d. Photosynthesis
Answer: a. Proton Motive Force
Explanation:
As a process presented in Bacteria, Mitochondria, and Chloroplasts, the chemiosmosis is important to generate ATP from ADP. In this process, we have two main components an electrical potential and a proton concentration gradient, that act in a process called proton-motive force. The ignition starts via the movement of electrons with different energy states via electron carriers.
Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year ________. A) are r-selected B) are K-selected C) are not subject to density-dependent limiting factors D) show the initial stages of the extinction process E) have escaped from the processes of natural selection and adaptation
Answer:
B) K - selected species
Explanation:
Usually, large in size individuals such as whales, hipopothamus, horses and bears are K-selected species. They have a low biotic potential which means, they produce small amount of individuals in the reproduction and possess relatively stable populations.
On the ther hand, species such as fleas, rats, and rabbits (between others) are rated r-selected species, which means they have a high biotic potential; have a large amount of individuals per birth.
Final answer:
Gray whales, which have low biotic potential and typically produce one offspring every other year, are categorized as K-selected species because they live long, mature late, and provide substantial parental care to their offspring. The correct answer is B) are K-selected.
Explanation:
The question tackles the reproductive strategies of different species, specifically focusing on the biotic potential and reproductive rates of grey whales. Organisms that have low biotic potential and produce few offspring at greater intervals, such as grey whales, are generally considered K-selected species. K-selected species, like grey whales and elephants, live long, mature late, and provide substantial parental care to their fewer offspring.
On the other hand, r-selected species are characterized by early maturation, short lifespans, and the production of many offspring with little to no parental care.
Therefore, the answer to the student's question is that groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year are B) K-selected.
2. The Isthmus of Panama cut off gene flow between Atlantic and Pacific populations of a species of fish. The cessation of gene flow led to the accumulation of genetic differences between the populations, which led to reproductive isolation. Now Atlantic and Pacific populations of this fish are separate species that cannot interbreed, even if they were again to come into contact with each other. The process described is that of
a. sympatric speciation.
b. parapatric speciation.
c. allopatric speciation.
d. reinforcement.
e. temporal isolation.
Answer:
C Allopatric Speciation
Explanation:
Evolution of two populations of same species into two separate species due to geographical isolation is called allopatric speciation.
In the given example, Isthmus of Panama serves as a geographical barrier and do not allow the interbreeding between Atlantic and Pacific fish populations of the same species.
These populations evolve genetic adaptation to make themselves better suited to the prevailing surroundings. Accumulation of genetic variations over generation leads to their reproductive isolation. Now, these two fish populations serve as two separate species as they can not interbreed.
Characteristics of the mature sperm include the ________. A. presence of two X chromosomes in approximately half the sperm B. absence of coiled mitochondria C. presence of Y chromosomes in approximately half the sperm D. absence of an acrosome
Answer:
Presence of Y chromosomes in approximately half the sperm.
Explanation:
Mature sperm cell consists of the following parts :
A head
A neck
A middle piece and
A tail.
Plasma membrane surrounds the complete body of sperm cell. Sperm head contains very little cytoplasm, an elongated haploid nucleus, the anterior portion of which is covered by a cap like structure called acrosome. The acrosome contains enzyme which help in the process of fertilization with ovum. Acrosome is derived from golgi apparatus. There is a short neck region which contains both the proximal and distal centriole. Proximal centriole plays an vital role in the first cleavage of zygote formed. Distal centriole gives rise to the the axial filament present in the long tail of sperm cell. The middle piece contains the mitochondria which are arranged spirally and produce energy for the movement of tail. The tail contains the central axial filament, small amount of cytoplasm and is surrounded by cell membrane as external sheath. The sperms cell swims at the rate of 1.5 to 3 mm per minute and reach the fertilization site within 30 minutes.
27. What is the major reactant needed for the Citric Acid Cycle (aka Krebs Cycle)?
a. Pyruvate
c. Chlorophyll A
b. Acetyl Co-A
D. Water
Answer: b. Acetyl Co-A
Explanation:
Acetyl CoA produced through pyruvate, amino acids, and fatty acids are oxidized in the Krebs cycle in CO2, obtaining as products NADH, FADH2 and GTP (ATP). Parallel to this oxidation, the Krebs cycle produces compounds used as precursors for biosynthesis. As it is a cycle, an oxaloacetate molecule could, in principle, oxidize an amount indefinite of acetyl CoA. Acetyl-CoA is formed from the oxidative decarboxylation of pyruvate, sequentially performed by pyruvate dehydrogenase -PDH (complex multi enzymatic of 3 enzymes), in the mitochondrial matrix.
List, in order, all the vessels blood must flow through to get from the abdominal aorta into the kidney and back to the inferior vena cava.
So, the complete path is:
Abdominal AortaRenal ArteryKidneyRenal VeinInferior Vena CavaTo trace the path of the blood from the abdominal aorta to the kidney and back to the inferior vena cava, let's list the vessels in the correct order:
Abdominal Aorta: The journey starts from the abdominal aorta, a major blood vessel that supplies blood to the lower part of the body.Renal Artery: Blood flows from the abdominal aorta into the renal artery.Kidney: Once the blood reaches the kidney via the renal artery, it undergoes filtration. The kidney removes waste products from the blood.Renal Vein: The filtered blood leaves the kidney through the renal vein.Inferior Vena Cava: Finally, the blood from the renal vein flows into the inferior vena cava, which carries blood back to the heart.Explain the relationship of the types of muscle fibers to muscle performance.
Answer:
The human skeletal system, and the muscles themselves, are the ones responsible for movement, warmth, metabolism, posture, and other things.
Our muscles are long stretches of fibers composed by sarcomeres that form our skeletal muscle system. Each of these fibers are joined together into fascicles, and each of them are characterized by the fact that they can either be of a fast twitching capacity (FT), or a slow twitching capacity (ST). As such, according to research, human beings have in their muscles two major types of fibers, the ST, which when looked histologically are stained red, and the FT, further subdivided into FTa and FTb, depending on their metabolic response, and which usually show white or pale on the microscope.
In regards to muscle performance, these three types of fibers, and their presence in the skeletal muscle system of a person will ensure the better, or lack of good, muscle performance when in exercise. Usually, under certain circumstances, por example, exercise, a person who has muscle training, will show a higher volume of ST fibers, and will have lesser exposure to muscle fatigue, which will make them more fit to longer extensions of exercise exposure. Whereas people with lesser training will present more incidence of FT fibers, especially those that work better under anaerobic conditions. These people, when exposed to exercise, will have faster muscle responses, but, fatigue will set in much faster too, because the aerobic process takes longer to set in, as the muscles are not trained.
David Fee studies sound waves so deep and low that humans cannot hear them. What are these low frequencies
called?
infrared
seismology
geosound
infrasound
Answer: infrasound
Explanation:
The infrasound is called as the low frequency sound. The frequency of these sounds is less than 20 Hz. The sound waves of the infrasound cannot be perceived by the humans as human ear are less sensitive to the low frequency. The infrasound can be produced in extreme weather conditions, earthquakes, meteor impacts, explosive detonation, collision of oceanic waves, waves on beach, and sound produced by the air conditioner.
The ________________ is best described as "an interconnected group of brain structures including parts of the frontal lobe-cortex, temporal lobe, thalamus, and hypothalamus, that is associated with learning, emotional experience, and behavior?"
Answer:
Limbic system
Explanation:
Limbic system is also known as paleomammalian cortex and located on the sides of thalamus. The cerebral cortex meets with the subcortical structure at the limbic system.
Limbic system is involved in learning, emotion, behavior and long term memory. This system interconnects the brain structure involving temporal lobe, frontal lobe-cortex and hypothalamus.
Thus, the answer is limbic system.
Which of the following is not a difference between the autonomic nervous system and the somatic nervous system?
a.The number and types of neurotransmitters.
b.The presence of ganglia.
c.The number of motor neurons.
d.The involvement of the spinal cord.
Answer: It is the involvement of the spinal cord.
Explanation: Whether message via the nerve impulse is voluntary(somatic nervous system) or involuntary (autonomous nervous system) it has to pass through the spinal cord to the brain. Basic function of the spinal cord is to receive sensory information from body parts to the brain and from the brain to the body.
The difference between the autonomic and somatic nervous systems that is not valid is d) 'The involvement of the spinal cord', as both systems involve the spinal cord.
The question pertains to the differences between the autonomic nervous system and the somatic nervous system. Among the options provided, the one that is not a difference between the two systems is 'd. The involvement of the spinal cord'. This is because both the autonomic and somatic nervous systems involve the spinal cord as part of their pathways. Specifically, the somatic nervous system consists of a single motor neuron path that extends from the central nervous system to skeletal muscles and releases acetylcholine. In contrast, the autonomic nervous system, which includes the sympathetic and parasympathetic divisions, consists of a two-neuron pathway from the CNS to peripheral ganglia and then to the target organs, such as smooth muscles, cardiac muscles, or glands. The primary neurotransmitter for the parasympathetic system is acetylcholine, while in the sympathetic system, the postganglionic neurons release norepinephrine.
Which of these structures forms the channel that sound travels through to reach the eardrum?
Select one:
a. auditory tube
b. external auditory canal
c. malleus
d. incus
Answer: External auditory canal
Explanation: External auditory canal or external acoustic meatus is a passage that leads from the outside head to the eardrum of ear.
The structure of external auditory canal is same in all the mammals, slightly curved tube extending from the outer ear towards eardrum.
This canal is almost 2.5 cm in length with some hairs and sweat glands on the outer side to prevent insects from entering into the ear.
So, the correct answer is external auditory canal.
Describe the pain associated with leukemia and explain the reason for it.
Answer:
Bone pain is associated with leukemia because large number of cancer cells are present in the bone marrow.
Explanation:
Leukemia may be defined as the cancer of blood cells. This cancer generally starts in the bone marrow and leads to uncontrolled division of the cell.
An individual suffering from leukemia may experience bone or joint pain. Bone pain is more common in lymphoblastic leukemia. The bone pain is mainly caused by the uncontrolled growth of cancer cell in the bone marrow.
What is the pH of a 0.1μΜ solution of HCl?
Answer:
The pH of a solution containing 0.1μΜ H+ is 7
Explanation:
The pH of any solution is given by the following mathematical equation -
[tex]pH = -log[H_{+}]\\[/tex]----------- Equation (A)
Where,
[tex]H_{+}[/tex] = the concentration of hydrogen ion in the solution.
Given
[tex]H_{+} = 0.1 micro meter= 0.1 * 10^{-6} meter= 10^{-7} meter[/tex]
Substituting the given value in equation (A) , we get -
[tex]pH = -log[10^{-7}][/tex]
[tex]= -(-7)\\= 7[/tex]
Hence, The pH of a solution containing 0.1μΜ solution is 7
Define convection
The exchange of heat by the emission of energy via electromagnetic waves
The exchange of heat between an animal’s body and the surfaces it is touching, such as the ground
The warming of tissue by the production of heat from metabolism
The loss of heat by the heat transferred from the body to water as it is converted from a liquid to a gas
The exchange of heat when heat is transferred to a fluid, such as air or water
Answer:
The exchange of heat when heat is transferred to a fluid, such as air or water.
Groundwater pollution: a) Comes only from non-point pollution sources, like fertilizer runoff from farmland. b) Is readily detectable because the presence of pollutants is obvious from the water's taste or smell. c) Is very difficult to clean up once it has occurred. d) All of the choices are correct.
Groundwater pollution comes from both non-point and point sources, and isn't always easily detected through taste or smell. It's challenging to clean up due to the complexity of groundwater systems and the wide dispersal of pollutants.
Explanation:Groundwater pollution does often stem from non-point pollution sources like fertilizer runoff from farmland, although it's not exclusive to these sources. It can also originate from point sources, like sewer leaks or industrial discharge. Regarding detectability, groundwater pollution isn't always easily detected through taste or smell, and may require scientific testing for confirmation.
The complexity of groundwater systems and the wide dispersal of pollutants make cleanup extremely challenging. This implies that preventing groundwater pollution is far more effective and cost-efficient than trying to clean up pollution after it has occurred.
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Proteins are transported via axoplasmic transport at slow rates (0.5 to 2 mm per day) and fast rates (200 to 400 mm per day). The difference in transport rate directly results from:
a. the difference in the time spent per day in transport by kinesin on microtubules.
b. the site where the protein is synthesized
c. the substrate molecule used by the motor protein
d. the motor protein used to transport the proteins
Answer:
Option (a).
Explanation:
Protein is one of the most important biomolecules and a basic building block of the body. Axoplasmic transport of protein includes the transportation of protein to and from the neuron.
Axoplasmic transport of protein shows the difference in transportation rate because different proteins spent different time on microtubules during transport by the kinesin molecule.
Thus, the correct answer is option (a).