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).
In what ways are humans like the other primates? In what ways are we unique?
Answer:
In what ways are humans like the other primates?
Primates and humans have taking hands and feet that let them hang from branches, grab food, and, in some primates, use tools. The first digit in many primates and humans are opposable and at least some, if not all, of the digits, have nails.
Unlike the eyes of shrews and squirrels, which sit on each side of the head so that the two fields of vision do not overlap, the eyes of primates and humans are shifted forward to the front of the face. This produces an overlapping binocular vision that lets the brain judge distance precisely—important to an animal moving through the trees.
In what ways are we unique?
The first hominids were australopithecines. The ability to walk upright on two legs marks the beginning of hominid evolution. Humans diverge from apes in numerous areas of anatomy related to bipedal locomotion. Because humans walk on two legs, their vertebral column is more curved than an ape’s, and the human spinal cord exits from the bottom rather than the back of the skull. The human pelvis has become broader and more bowl-shaped, with the bones curving forward to center the weight of the body over the legs.
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
What is a goblet cell? What is secreted by a goblet cell?
Explanation:
Goblet cells can be found in numerous numbers distributed among the columnar epithelial cells throughout the gastrointestinal tract. They are specialized in producing and secreting a high molecular weight mucopolysaccharide known as mucins. The columnar epithelial cells of the respiratory airways contain cilia on their apical surface (the surface facing the lumen, or cavity), which move the mucus toward the throat.
A goblet cell is a type of unicellular gland found in the columnar epithelium in the body. Their main function is to produce and secrete mucus, which helps to protect the body's interior surfaces and plays a key role in trapping unwanted particles and microorganisms.
Explanation:A goblet cell is a unicellular gland that is typically found in the columnar epithelium lining of organs such as the small intestine and the respiratory tract. These cells are named for their distinctive shape, which is reminiscent of a goblet or wineglass.
The primary role of goblet cells is to produce and secrete mucus, a thick, slippery substance that serves various protective and lubricative functions in the body. The mucus secreted by goblet cells helps to protect the body's interior surfaces, facilitating the movement of materials and also trapping unwanted particles, effectively playing an integral part in immune responses. For example, goblet cells in the intestinal epithelium secrete mucus into the digestive tract lumen and those in the respiratory tract secrete mucus that traps incoming microorganisms and particles.
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6. Before transferring sperm to the female during mating, the males of some species of beetles use their copulatory organs to remove the sperm of other males. In cases in which a female mated first with a male of a different species, the male of her own species is particularly adept at removing the other male’s sperm. This is an example of _______ isolation.
a. geographical
b. temporal
c. mechanical
d. postzygotic
e. precoital
Answer: Mechanical Isolation
Explanation:
Mechanical isolation is a type of barrier that prevents the species that are closely related from mating with each other.
It is used in case of plants and animals(here beetles) in which the without compatible sex organs individual of different species will not be able to mate and produce offspring.
Thus, the correct answer is option C
In a monohybrid cross of corn plants, purple seeds (P) are dominant to yellow (Y). Both parents in the original cross are homozygous. One has purple seeds, and one has yellow seeds. What is the genotype of the purple plant?
The genotype of the purple plant would be PP,
The genotype of an organism generally refers to the genetic composition of the organism. Each gene is represented by 2 alleles, otherwise known as alternative forms of genes.
When the same alleles represent a gene, such gene is said to be homzygous, but when the alleles are different, such genes are said to be heterozygous.
In this case, the purple seed allele is represented by P and the purple parent is said to be homzygous. Hence, the genotype would definitely be PP.
More on genotypes can be found here: https://brainly.com/question/14089337
Final answer:
The genotype of the purple plant is PP, with two copies of the dominant allele for purple seeds.
Explanation:
In a monohybrid cross of corn plants, purple seeds (P) are dominant to yellow (Y). Both parents in the original cross are homozygous. One has purple seeds, and one has yellow seeds. The genotype of the purple plant can be determined as PP, since both parents are homozygous and the purple color is dominant. This means that the purple plant has two copies of the dominant allele for purple seeds.
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.
When you drive down the street listening to your car’s radio, you may not think about the fact that the music is received by the radio’s antenna. Which part of the human neuron serves the same purpose as an antenna – that is, receiving information?
Your answer would be dendrites.
Dendrites look like branches coming off of the main body of the neuron. They receive electrical signals from axons, and then transmit them to the rest of the cell body.
Hope this helps!
1) Rigor mortis occurs after a person dies because muscle cells are no longer supplied with ATP. This causes the muscles to become rigid and stuck in position. Based on your knowledge of muscle contraction, why would muscles become rigid, rather than limp, after death?
2) The term fibrillation refers to an irregular, ineffective heartbeat. Do you think ventricular fibrillation is more or less serious than atrial fibrillation in a human? Explain your reasoning.
Answer:
1.)Rigor mortis, the stiffening of a body several hours after death, arises from a combination of two of the oldest definitions of death – cessation of the heartbeat and cessation of breathing. Once either of these essential functions stops, the cells of the body lose their oxygen supply and can no longer perform aerobic respiration.
Immediately after death, the muscles of the body contract in the same manner as they do when the person is alive. Muscle is formed of bundles of long and narrow cells that can span the entire muscle’s length.
In the resting state, these cells build up the electric potential across their membrane by actively pumping out calcium ions. Upon receiving a signal from a neuron, the muscle cells open the calcium channels in their cell membrane, and the calcium ions rush in due to the voltage difference between the inside and outside of the cell.
2.) I think VFib (ventricular fibrillation) is more serious due to the fact that AFib is not normally life threatening and not nearly as much as VFib and the ventricles pour out all to blood to the body making it extremely vital
Rigor mortis occurs because ATP is needed for muscles to relax, and when there's no more ATP after death, muscles remain in a contracted state. Ventricular fibrillation is more serious than atrial fibrillation due to the vital role of ventricles in pumping oxygenated blood to the body.
Explanation:Rigor mortis occurs because the processes that control muscle relaxation are ATP-dependent. Normally, after a muscle contracts, ATP binds to the myosin head allowing it to release from actin, resulting in muscle relaxation. However, after death, when ATP supply stops, the myosin heads can't detach from actin, causing a sustained muscle contraction, or 'rigidity'.
As for the distinction between atrial fibrillation and ventricular fibrillation in humans, ventricular fibrillation is generally considered more dangerous. This is because the ventricles are the main pumps of the heart, delivering oxygenated blood to the body. If they begin to fibrillate, blood is not effectively pushed out of the heart, which can quickly lead to cardiac arrest and death if not immediately treated.
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Which of the following components of the sarcomere is an ATPase?
a. actin
b. tropomyosin
c. troponin
d. myosin
e. alpha actinin
Answer:
D. Myosin
Explanation:
The ATP binding site at myosin also have ATPase activity and can carry out hydrolysis of ATP into ADP and inorganic phosphate. The energy released during the ATP hydrolysis by ATPase activity of myosin is required to change the position of myosin head into the docked position to allow further movement.
The component of the sarcomere with ATPase activity is myosin. Through its ATPase activity, myosin hydrolyzes ATP to allow for muscle contraction.
Explanation:The component of the sarcomere that is an ATPase is d. myosin. Myosin, a motor protein, is the molecule that interacts with actin to cause muscle contraction.
ATP (Adenosine Triphosphate) attached to myosin is hydrolyzed, a process catalyzed by the ATPase activity of myosin. This releases energy and gives the myosin 'head' the ability to bind to actin, which enables muscle movement.
Unlike actin, tropomyosin, troponin, and alpha-actinin, myosin can bind and hydrolyze ATP, making it singular in its character within the structure of the sarcomere.
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Explain the steps involved in the contraction of a skeletal muscle fiber.
Every time we move, the muscles contract and relax. Even for a few seconds, it is a fairly complex process.
The cells that make up the skeletal muscle are called muscle fibers or myofibers and are long cylindrical structures surrounded by a plasma membrane called sarcolemma.
Each muscle cells contains thousands of myofibrils, formed by thin filaments (actin) and thick filaments (myosin), which interact to produce shortening of the muscle, contraction.
Muscle contraction is the result of the molecular interaction that occurs between the proteins (actin and myosin) that form the filaments contractile, leading to a slippage of the fine filaments on the thick filaments.
It can be divided as follows:
- The calcium that is outside the muscle cell enters through the cell membrane.
- Calcium, already inside the muscle cell, joins the actin and makes it rotate so that it can be anchored.
- Actin binds to the myosin head, then inorganic phosphate comes out of the myosin head that produces a change in volume.
- This volume change of the myosin head causes it to change from 90 degrees to 45 degrees.
Muscle contraction begins with a neurotransmitter signal that depolarizes the muscle fiber, causing an action potential that releases calcium ions. The calcium ions interact with actin and myosin, leading to the sliding filament model of muscle contraction. The muscle fiber continues to shorten as long as calcium ions are present and ATP is available.
Explanation:The contraction of a skeletal muscle fiber involves the following steps. It begins with a signal from the motor neuron innervating that fiber. This signal is a neurotransmitter, Acetylcholine (ACh), which triggers depolarization of the local membrane of the fiber. This depolarization leads to an action potential that spreads to the rest of the membrane, including the T-tubules. The action potential triggers the release of calcium ions (Ca++) from storage in the sarcoplasmic reticulum (SR).
Once released, the Ca++ ions interact with the shielding proteins, making the actin-binding sites available for attachment by myosin heads. This attachment forms a cross-bridge between actin and myosin, leading to what is known as the sliding filament model of muscle contraction. The myosin pulls the actin filaments toward the center of the sarcomere, causing the muscle fiber to shorten. This process will continue as long as Ca++ ions remain in the sarcoplasm and ATP is available.
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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.
Which of the following statements regarding pesticides is FALSE? a. Pesticides are found in food at levels that are below their ADIs. b. Pesticides may not be present in foods at levels that exceed the maximum residue limit tolerance. c. Pesticides may be used during preplanting, growth, and harvesting of crops. d. Pesticides can never be used safely under normal use conditions.
Answer:
Option (D).
Explanation:
Pesticides are the chemical used to kill the harmful organism that are categorized as pest. Pesticides can be used ti kill plants, fungi, animal and other microorganism.
Pesticides include herbicides, fungicides and insecticides. Pesticides can be used safely for the non target organisms but under normal use conditions only.
Thus, the correct answer is option (D).
2. Why can you say that males determine the sex of their children?
Since males have two X chromosomes, whichever one is passed along to their offspring will determine the sex.
Male chromosomes are inherited preferentially over female chromosomes.
Males will either contribute an X or a Y chromosome, whereas females will always contribute an X chromosome.
Y chromosomes are dominant; X chromosomes are recessive.
All of the above.
Answer:
Male will either contribute an X or Y chromosome....
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.
The NADH coenzyme enters the electron transport chain:
A- anywhere in the chain
B- for ATPase
C- through the membrane
D- in the first dehydrogenase
Answer: C- through the membrane
Explanation:
The molecules of NADH and FADH2 resulting from the of Krebs (by the reduction, respectively, of NAD + and FAD) carriers of electrons and protons (e- and H +), are oxidized in the final reactions of cellular respiration, and the electrons and protons are picked up by oxygen, the final acceptor. Electron transport occurs in the intermembrane space. The electron transport chain contains 3 large protein complexes in the inner membrane of mitochondria; a small protein - cytochrome c; and a non-protein component - ubiquinone (Q).
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.
What do "adduction" and "abduction" mean?
Answer:
Adduction:
Adduction may be defined as body movement towards the body's midline. The movement of arms straight out of the shoulder and brings down to the sides , this shows an adduction movement. Adduction movement of finger beings the digit towards hand center.
Abduction:
Abduction may be defined as body movement away from the body's midline. The movement of hands from body side upto the shoulder, this shows an abduction movement. Abduction movement of finger brings the digit away from the hand center.
If a volcano were to erupt and release large amounts of ash into the air, how would this affect the climate on Earth? a. The ash would increase the greenhouse gases, thus increasing temperature. b. The ash would decrease the albedo and increase the global temperature. c. The ash would increase the albedo and decrease the global temperature. d. The ash would decrease the greenhouse gases, thus decreasing temperature.
Answer:
c. The ash would increase the albedo and decrease the global temperature
Explanation:
The volcanoes play a big role in the global climate, and it is manifested in two contrasting ways. From one side, the volcanoes, through their eruptions, release lot of greenhouse gasses, thus warming up the planet. On the other side, the volcanoes also release lot of ashes in the atmosphere, thus decreasing the global temperature. It all depends on the type of eruption. The volcanoes that have massive eruptions through which they propel lot of ash in the atmosphere, manage to create a cover in the atmosphere, which in turn acts like a barrier between the sunlight and the surface, increasing the albedo. By increasing the albedo in the atmosphere, the global temperatures will drop, as smaller amount of sunlight will reach the surface.
Colony stimulating factors will result in A. platelet production B. fibrinolysis C. white blood cell production D. the production of thrombin E. vascular spasm
Answer:
(C). white blood cell production
Explanation:
CSFs (colony stimulating factors) are glycoproteins that activate intracelluar pathways and promote proliferation of hemopoietic stem cell to form immune cells (white blood cells).
CSFs are released in response to infection and interacts with blood stem cells to produce new immune cells. These resulting new immune cells create an army of cells to fight against the infection and provide immunity.
Thus, the correct answer is option (C).
in Labrador retriever dogs, the dominant gene B determines black coat color and bb prouces brown. A separate gene E, however, shows dominant epistasis over the B and b alleles, resulting in a golden coat color. The recessive e allows expression of B and b. A breeder wants to know the genotypes of her three dogs, so she breeds them and makes note of the offspring of several litters. Determine the genotypes of the three dogs. a. golden female (dog 1) x golden male (dog 2) offspring: 7 golden, 1 black, 1 brown b. black female (dog 3) x golden male (dog 2) offspring: 8 golden, 5 black, 2 brown
Answer:
Dog 1: Eebb
Dog 2: EeBb
Dog 3: eeBb
Explanation:
Let's first analyze the offspring to know their genes
Black: ee (to be able to be black) Bb (because they told you black is dominant
Brown: ee (to be able to be brown) bb) (because is recessive)
Golden: Ee (because E is dominant to Golden) and here could be bb or Bb.
Now, we know what we are looking for: ee, Ee, Bb, and bb. Let's analyze the parents.
DOG 1: golden female
Ee and could be Bb or bb
DOG 2: golden male
Ee and could be Bb or bb
The had both color breed, so one will be bb and the other will be Bb.
DOG 3: black female
ee Bb (to be back)
So, because DOG 3 x DOG 2 had browned, we could say DOG 2 final alleles are EeBb and DOG 1 final alleles are Eebb
The genotypic arrangements for the three dogs based on the breeding results are assumed to be E_B_ (Dog 1), E_B_ (Dog 2), and EeBb (Dog 3). Epistasis, particularly the E gene's dominance over B and b alleles, results in the golden fur color.
Explanation:In Labrador retrievers, fur color is determined by two main genes: B and E. In your question, it's mentioned that the golden color is a result of epistasis, where the E gene is dominant over the B and b alleles, causing the coat color to be golden regardless of the presence of B or b. The genotypes of the dogs can be deduced from the breeding results.:
Dog 1, a golden female would have the genotype E_B_ as its color shows it has the dominant E. Dog 2, a golden male, based on its offspring, must also have the genotype E_B_. Dog 3, a black female that can produce brown and golden puppies when mated with the golden male, likely has the genotype EeBb. Learn more about Genotypes and Epistasis here:https://brainly.com/question/31794199
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3. If a plant cell was placed in a solution which was HYPOtonic to the salinity of the cell itself, what would be the expected reaction? a. Water enters the cell c. Water released from central vacuole b. Water exits the cell d. Cell becomes less rigid
Answer:
Water will exit the cell!
Explanation:
Because the solution is HYPOtonic, meaning the outside of the solution has a lower concentration of molecules (be it water, sugar, etc), the water within in the cell will leave in order to even out of the concentrations within and outside the cell.
Heat loss is defined as…
evaporative heat loss + convective heat loss + radiative heat loss + conductive heat gain
evaporative heat gain + convective heat loss + conductive heat loss + radiative heat loss
evaporative heat loss + convective heat loss + conductive heat loss + radiative heat loss
evaporative heat loss + convective heat loss + conductive heat loss + radiative heat loss + metabolic heat loss
evaporative heat loss + radiative heat loss + convective heat gain + conductive heat gain
Answer:
evaporative heat loss + convective heat loss + conductive heat loss + radiative heat loss
Answer:
evaporative heat loss + convective heat loss + conductive heat loss + radiative heat loss
Explanation:
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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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:
Mitosis and cytokinesis result in the formation of _____; meiosis and cytokinesis result in the formation of _____. four haploid cells ... two diploid cells two diploid cells ... two diploid cells four diploid cells ... four haploid cells two diploid cells ... four haploid cells two diploid cells ... two haploid cells
Answer: two diploid cells two diploid cells
Explanation:
There are two types of division, mitosis (equational = each parent cell produces two daughter cells genetically identical) and meiosis (reductive = each mother cell produces four daughter cells with half the number of chromosomes). Mitosis is divided into steps:
Interphase: The chromatin filaments duplicate;
Prophase: At this stage, the chromosomes begin to become visible due to spiraling; The nucleoli begin to disappear; The centrioles begin to spindle fibers that will help in cell division. The core absorbs water, swells, and clutters the nuclear membrane.
Metaphase: The chromosomes are very visible as they reach the maximum of spiraling; The chromosomes attach to the spindle fibers in the equatorial region of the cell next to each other;
Anaphase: The spindle fibers begin to shorten, and as a result, each filament is pulled to the cell poles.
Telophase: The chromosomes begin to spiral out; The nucleoli and the nuclear membrane begin to appear, And the centrioles are already located in pairs in each daughter cell.
Cytokinesis: It is the breakdown of the cell in two. In animals, it occurs from the outside in (centripetal) and in vegetables from the inside to outside (centrifuge).
Answer:
two diploid cells
Explanation:
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.
Select the incorrect statement concerning the hypothalamus. It serves as the CNS control center for the autonomic nervous system. It is important in the CNS regulation of endocrine systems. Because it is isolated, drugs of abuse are less likely to affect the hypothalamus than other brain areas. It is important in maintaining homeostasis in the body.
Answer:
Option (3).
Explanation:
Hypothalamus is located at the base of a brain and divided into anterior, posterior and middle regions. These three regions work together to control the vital functions of the body.
Hypothalamus regulate the endocrine system, maintains homeostasis and control center of autonomic nervous system. Hypothalamus is not isolated and drugs abuse affects the hypothalamus region of the brain.
Thus, the correct answer is option (3).
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.
Synaptic vesicles at the neuromuscular junction contain
Explanation:
It contains multiple mitochondria and synaptic vesicles where the transmitter acetylcholine is stored
Answer:contains multiple mitochondria
Explanation:
For the average human, blood lactate:
a. begins to accumulate significantly at a point that is about 55-65% of Vo2 max
b. begins to accumulate significantly only when the Vo2 max is reached
c.can be used as an energy fuel by the heart and skeletal muscles
d. a and c
Answer: a. begins to accumulate significantly at a point that is about 55-65% of Vo2 max
Explanation:
Lactate is produced in the body after the burning of glucose (glycolysis), to supply energy without the presence of oxygen (lactic anaerobic metabolism). In long-term physical activities, oxygen supply is not always sufficient. The organism seeks this energy in alternative sources, producing lactate. For the average human, blood lactate begins to accumulate significantly at a point that is about 55-65% of Vo2 max. The accumulation of this substance in the muscles can generate a hyperacidity, which causes pain and discomfort soon after exercise. Thus, the determination of lactate blood concentration allows indirect evaluation of the metabolic acidosis of the exercise, being one of the diagnostic tools used by Exercise Physiology.