Answer:
I believe that passive diffusion is the process in the small intestines that requires a carrier and energy to transport nutrients into absorptive cells. It usually involves the movement if the molecules from a region of high concentration to a region of low concentration through a membrane.
Explanation:
Intestine epithelial is known as the single cell layer which helps in the formation of the luminal lining of the large and small intestines of the gastrointestinal tract. It is made up of simple columnar epithelial cells. Two important known function of the epithelial cell is :
1) Absorbing necessary substances in the body such as nutrients.
2) Restricted the entry of substances which is harmful for our body.
As the nature of its protective role, the intestinal epithelium helps in the formation of important component of the intestinal mucosal barrier.
The absorption of nutrients takes place by diffusion through the small intestine's wall.
Some of the nutrients that the small intestine absorbs include lipids, proteins, carbohydrates, vitamins, proteins, etc. The inner wall of the small intestine is lined with epithelial tissue.
In the small intestine, there are epithelial cells and they help increase the amount of surface area that is available for nutrient absorption.
The absorbed nutrients are then transported through the blood vessels to the organs in the body. They're then used in the building of complex substances that the body needs.
In conclusion, the food that remains undigested will then be sent to the large intestines.
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The Investigation
It’s your first day shadowing a detective, and already it’s been interesting…if you can call the murder of a young woman interesting. You’ve been trying to detach yourself by reading the file, but you have interviews later this morning and you’re nervous. Going back to the file, you jot down some notes on what you know so far.
Melissa was a 35-year-old nurse-midwife with over ten years’ experience delivering babies both in hospitals, as well as in homes when risk for complications were low. She was healthy; her only medical condition was an allergy to bee stings. The body was discovered by her boyfriend when he came over for a planned dinner. The dinner – spaghetti – was laid out, but no cooking had begun. There was also a plate of cupcakes, with a bite out of only one of them. The boyfriend said Meleea had not mentioned feeling unwell when they spoke earlier in the day. She was, however, tired, and understandably upset about a long birth she had assisted with where a mother had died in childbirth.
The medical examiner did not have results yet, so you sketch out some questions you have for the interviewees.
1. Who would you interview, and what would you ask?
2. Do you have any hypotheses about what happened to Meleea? Write at least one or two possibilities.
1. I would interview the boyfriend and family members of the mother who died in childbirth. I would ask where they were at time time of death and if they have an alibi.
2. There could have been something put in the cupcakes, since only one bite was taken from a single one.
mechanism of the formation of urine
Explanation:
Filtration, Reabsorption, Secretion: The Three Steps of Urine Formation. The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion.
Hormones are chemical molecules produced by endocrine glands. One such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. Which two statements describe the probable reason for the function of the hormone? A)The cells in the heart have specific receptors that allow for the intake of hormones. B) The heart and the endocrine glands have the exact same types of cells. C)All cells make the same types of hormones. D)Thyroid hormones show their effect on the heart by means of specialized cells. E) Thyroid cells and cardiac cells have different DNA.
Answer:
i think option d is correct answer because it helps in the management of heart beat , blood pressure etc.
An atom has a mass of 35 a neutron mass of 35 and an electron mass of 35. What is the estimated mass of the atom
The estimated mass of the atom is 70 amu...
ExplanationAn atom has a proton mass of 35 and a neutron mass of 35 , Mass of an atom is equal to the sum of number of protons and number of neutrons .
In this case , number of protons p = 35 Number of neutron n = 35 So , the estimated mass of the atom will be :-
M 35 protons + 35 neutrons = 70 amuhope this answer correct (^^)....
A population of birds lives on a small island. Another population of the same species lives on the mainland. The distance between the island and the mainland is too great for birds to fly back and forth. Recently, a series of sandbars and tiny islands have formed between the island and the mainland?
Answer:
Explanation:
Based on this information it can be said that this formation between the islands and the mainlands will most likely cause an increase in gene flow between the bird populations. Since the islands and the mainland are now connected birds from both these two different habitats will begin mating and producing progeny, thus causing gene flow to increase between these species.
Answer:
An increase in gene flow between the birds population.
Explanation:
Which best describes a person's carbon footprint?
O A. The amount of carbon dioxide he or she releases into the
atmosphere
B. The amount of carbon consumed by a person
C. The amount of carbon he or she absorbs from the environment
O D. The amount of nitrogen he or she fixes into carbon
A. The amount of carbon dioxide a person releases into the atmosphere
Answer:
Pretty sure its A if not sorry
Explanation:
. Some people have developed allergies to animal insulin. Explain why the immune system would be able to distinguish animal insulin from human insulin
Answer: Difference between animal and human insulin and/or not being properly purified.
Explanation:
Insulin is a hormone that regulates the metabolism of secreted by the β-islet of Langerhans cells of the pancreas. It that allows blood sugar, known as glucose, to pass into cells. Glucose comes from the food and drinks and it is the body's main source of energy. So, insulin plays a key role in maintaining proper blood glucose levels.
Animal insulin is produced by the pancreas of animals, usually cows and pigs. Then, the insulin is purified to reduce the chance of the insulin user developing a reaction to the insulin.
Each organism has its own genetical identity and any foreign particle is treated as an antigen. And, there is small chemical difference between insulin produced in animals and insulin produced in humans. That difference, caused by a different sequence of peptides, can be recognized by the immune system as something foreign and as such can be a threat to the body. And that would trigger an immune response. Also, the response can be because it hasn't been properly purified and contains other compounds or proteins that are also foreign.
Different types of protists move in different ways. Describe how one type of protists you observed moves. Be specific.
Answer:
Euglena is a protist and it moves with the aid of structures called flagella
Explanation:
Flagella are known as locomotive cells which propels from the body parts of organisms . They are made of protein structures and formed in a helical manner.
They are whip like structures and usually helps in the movement of the protists through liquid surfaces through the whip like movement of the flagella.
Drag each label to the correct location. Each label can be used more than once. In a hydropower station, water stored in dams is allowed to fall with force to make a turbine move. The turbine moves and produces electricity. In the diagram, identify the stages of transformation of energy in the hydropower station. Please help!!
(Fill in left to right of the blanks) gravitational, kinetic, kinetic, electric
The process of dragging the labels to their correct location is represented as follows:
The blank that indicates the stored water signifies the gravitational energy, the water that falls down through the dam and moves turbines in order to produce electricity illustrates kinetic energy, and finally, it produces electric energy. What is Energy transformation?Energy transformation may be defined as a process through which one form of energy gets transferred into another form due to the action of numerous external attributes.
In the diagram given above, the process of energy transformation is remarkably depicted with each form of energy with respect to their attributes. The kinetic energy deals with the movement of any object, particle, or body.
Therefore, the process of dragging the labels to their correct location is well represented and described above.
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Which of the following best describes how ACh changes the ion permeability of the sarcolemma?
A) ACh activates acetylcholinesterase.
B) ACh entry into the axon terminal causes neurotransmitter release.
C) ACh binds to receptors in the junctional folds.
D) ACh entry into the muscle fiber causes Ca2+ to be released by the sarcoplasmic reticulum.
Answer:
C) ACh binds to receptors in the junctional folds.
Explanation:
The statement 'ACh binds to receptors in the junctional folds' best describes how ACh changes the ion permeability of the sarcolemma (Option C).
The sarcolemma is the plasma membrane of the muscle cells.
Moreover, acetylcholine (ACh) is a neurotransmitter that is released by motor neurons during muscle contraction.
After release, ACh binds to specific (nicotinic) receptors in the sarcolemma at the neuromuscular junctions (i.e., junctional folds).
These receptors are also called chemical-gated and/or ligand-gated channels because they are known to modify the ion permeability of the sarcolemma.
In conclusion, the statement 'ACh binds to receptors in the junctional folds' best describes how ACh changes the ion permeability of the sarcolemma (Option C).
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Starting with the illuminator and ending with your eye, describe the path of light traveling through a microscope with a specimen on a slide.
Answer:
A) Light, originates from source
B) With the help of the condenser, it becomes focused onto the specimen on the slide
C) The light then enters the objective lens which magnifies the image.
D) The magnified image/light then passes through a series of mirrors and prisms made of glass and eventually entering the eyepiece
E) The eyepiece further magnified the image then throws it to be received by the eyes.
Cheers!
A circular double-stranded DNA molecule contains 4200 base pairs. In solution, DNA is in a B-form helix, with about 10.5 base pairs/turn. The DNA has 12 superhelical turns. What is its superhelix density
Answer:
The correct answer is - 3 × 10⁻²
Explanation:
first find LKo = length of BDNA/ 10.5 bp/turn
= 4200/10.5
= 400
now calculate Δ LK= LK - LKo
ΔLK = 412-400
ΔLK = 12
now, superhelix density = ΔLK/LKo
⇒ 12/400 = 0.03
= 3×10⁻²
Thus, the correct answer is - 3 × 10⁻²
Compare and contrast the characteristics of the ideal tissue forming the outer surface of the body with that forming the lining of the small intestine. How are they similar and different? What tissues fulfill these needs?
The tissue that forms the outer surface of the body is a stratified squamous keratinized epithelium. The surface layer of dead cells(stratum corneum) is made to keep things out of the body, protecting it. The tissue that lines the digestive tract(e.g. intestine). Is made from 1 layer of columnar cells that facilitate the absorption of nutrients. Both tissues are epithelia.
The tissue that forms the outer surface of the body is a stratified squamous keratinized epithelium.
It should be noted that the cells on the surface of stratified squamous keratinized epithelium are very flat. The surface layer of dead cells is vital for protecting the body.
The tissue that lines the digestive tract that is, the intestine is made from a layer of columnar cells that is important for the facilitation of the absorption of nutrients.
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Molecules that are too large to pass through the pores of a cell membrane
may enter the cell by a process known as
Answer:
facilitated diffusion.
Explanation:
molecules, such as lipids can pass through the cell membrane by simple diffusion.
NOTE: Simple diffusion permits the passage of only small and non polar molecules across the cell membrane.
Facilitated diffusion permits the passage of large and polar molecules across the cell membrane.
The process is facilitated diffusion.
In a certain variety of lentils, one gene controls color: red is completely dominant to orange, while a second independent gene controls pattern: large spots are co-dominant with small dots. A dihybrid cross involving these two genes should result in:
Answer:
a phenotypic ratio 9:3:3:1
Explanation:
one gene controls color: red (R) is completely dominant to orange (r) a second independent gene controls pattern: large spots (L) are co-dominant with small dots (l)A dihybrid cross involving these two genesCross:
Parental) RrLl x RrLl
Gametes) RL Rl rL rl
RL Rl rL rl
Punnet Square) RL Rl rL rl
RL RRLL RRLl RrLL RrLl
Rl RRLl RRll RrLL Rrll
rL RrLL RrLl rrLL rrLl
rl RrLl Rrll rrLl rrll
F1) 9/16 R-L-, red and large spotted individuals
3/16 R-ll, red and small dotted individuals
3/16 rrL-, orange and large spotted individuals
1/16 rrll, orange and small dotted individuals
Note: The symbol "-" refers to either the dominant allele or the recessive one
A microbiologist would like to use a noncompetent genus of streptococcal bacteria, Enterococcus faecalis, as a cloning host to express genes from Streptococcus pneumoniae, which is naturally competent. Is this possible? Group of answer choices
Answer:
Yes, with the assistance of electroporation the bacteria Enterococcus can be made competent, and afterward, the Streptococcus bacterial genes can be presented within the Enterococcus with the help of a cloning vector.
The electropermeabilization or electroporation refers to a microbiology technique in which the permeability of the cell membrane is enhanced with the application of the electric field. This permits drugs, chemicals, or DNA to get presented within the cell.
The procedure of electroporation is generally used in the field of microbiology to transform yeast, bacteria, or protoplasts of plants by presenting novel coding DNA.
Novobiocin is a bacteriostatic, narrow-spectrum antibiotic that targets _____ in some Gram-positive bacteria.
Answer:
Novobiocin target DNA GYRASE of gram positive bacteria.
Explanation:
Novobiocin is a bacteriostatic(slow down bacteria growth) or bactericidal i.e it kills bacteria , narrow spectrum antibiotics that target DNA GYRASE of gram positive bacteria. It acts by inhibiting the bacteria DNA gyrase hydrolysis thereby by interfering with the metabolic activities of bacteria. It is also a weak catalytic inhibitor of mammalian. Novobiocin inhibit DNA gyrase and topoIV by binding to the ATP pocket of GyrB and ParE, respectively.The Streptomyces strain that produces Novobiocin and it is more effective on gram positive bacteria that gram negative bacteria because gram negative bacteria are resistant to it.
What do you think might happen to tissues such as the intestinal lining if a disorder blocked mitotic cell division in all cells of the body
Answer:
This is what actually happens with chemotherapy for cancer. Drugs are given which inhibit cell division. Cells such as tumour cells, which are rapidly dividing are affected most, then other dividing cells such as the epithelial lining of the gut, which nedds cell division to repair itself. The result is ulceration and bleeding.
hope this answer is correct
Implanting an electrode that supplies a weak electrical current to specific brain areas is called _____. It is useful in the treatment of _____
Answer:
Deep Brain Stimulation (DBS)
Depression, Uncoordinated body movements such as in Parkinson's disease
Explanation:
Deep brain stimulation is a surgical procedure in which a device that sends electrical impulses to the brain by means of lead wires connected to electrodes placed in the specific areas of the brain, is implanted in the body, typically the chest region.
This surgical procedure is usually required to treat diseases in which there is irregular and improper nervous stimulation of the brain resulting in various nervous disorders such as irregular muscle movements as in Parkinson's disease as well as depression.
The impulses sent from the stimulator device to the electrodes in the brain through the wires, serves to stabilize and normalize nerve signals sent to the brain.
Why are the seminal vesicles important for human reproduction
Answer:
Seminal vesicle secretion is important for semen coagulation and may promote sperm motility, increase stability of sperm chromatin, and suppress the immune activity in the female reproductive tract.
Explanation:
Copy and paste the paragraph into Google, and you will get an article on the topic.
The fact that each plant gets only one allele from each parent plant is detailed in the law of
Answer: segregation law
Explanation:
Which body feature do ultramarathon runners count on to give their muscles fuel for endurance? Group of answer choices Toned ligaments and tendons Healthy cartilage Stronger long bones Richer blood supply
Answer:An ultra-marathon can also be defined as a running competition ... World records in female elite and age group athletes in distance-limited races, from ... as skeletal muscle mass, body fat and running training were examined in ... for a long time, and do not make any tempo changes
Reflect on your relationship with food and how might have been by your family media and the culture in general what ways might these influences have altered your natural motivation to eat? 50 word
Answer:
My natural motivation to eat anything I like has been altered.
The internet as a media is rife with various information about the nutritional composition of certain foods and what they can do to the body. So it easy for me, instead of hiring the services of a nutritionist, to google search "foods that increase body metabolism" and be bombarded with millions of search results with mixed content from authoritative and nonreliable sources.
So the primary challenge is to sift through all of that information for authentic advice. The secondary is to act on this newly acquired information. The bottom line is that I have become very intentional about my choice of food.
Cheers!
Probiotics help to reinforce the integrity of the gastrointestinal tract by forming a network of proteins that blocks the movement of pathogens through its lining. If the integrity of the GI tract lining is compromised, pathogens can move more easily into the blood. This condition of compromised integrity of the GI tract is called
Answer:
The correct answer is "leaky gut".
Explanation:
"Leaky gut", also known as "intestinal permeability", is a term used to describe a condition of the gut's mucosal lining at which it becomes permeable as a result of suffering from damage. This is a serious condition since undigested food particles, toxic waste products or pathogens can move more easily into the blood. This contributes to suffer from different diseases, which can become chronic if the condition gets unattended.
In Neugroschel's translation of The Metamorphosis, how does Gregor seem
less connected to his family than in Wyllie's translation?
O A. Neugroschel has Gregor snap his jaws a few times at his mother,
frightening her.
O B. Neugroschel makes Gregor's mother run into the arms of her
husband for comfort.
O
C. Neugroschel says Gregor tries to calm his mother, but Gregor does
it quietly and not gently.
O D. Neugroschel refers to Gregor's parents as "the mother" and "the
father" instead of "his mother" and "his father."
Answer:
I think it's D
bit not sure enough
Answer:
The answer is D.
D. Neugroschel refers to Gregor's parents as "the mother" and "thefather" instead of "his mother" and "his father."
Explanation:
Based on what you know of bone features, what do you think this canal is for? Why would we need a hollow space in this area of this bone?
Answer:
The mandibular canal, also referred to as the Inferior Alveolar Canal (IAC), sits within the mandible. It serves the purpose of housing the inferior alveolar nerve which is responsible for supplying sensation to the lower teeth.
This canal also houses the inferior alveolar vein - a dental vein whose function is to (with the assistance of the posterior alveolar artery) drain blood from the lower teeth and jaw.
A picture of the mandibular canal is attached.
Cheers!
what is a part of interphase A. cytokinesis B. telophase C. anaphase D. s phase
Answer:
D
Explanation:
I did it on my own soci know it's the answer
In the context of interphase, the S phase is the specific part where DNA replication occurs, contributing to the overall process of cell division and ensuring the transmission of genetic material to new cells and the correct option is option D.
Interphase is the longest phase of the cell cycle, and it is divided into three main stages: G1 phase, S phase, and G2 phase. Among these stages, the S phase is specifically responsible for DNA replication. It is during the S phase that the cell's DNA is duplicated in order to prepare for cell division.
During the S phase, the DNA helix unwinds, and the two strands separate. Enzymes and proteins then work together to synthesize new complementary strands for each of the separated DNA strands. As a result, two identical copies of the DNA molecule are produced.
The S phase plays a crucial role in maintaining the genetic integrity of the cell. By accurately duplicating the DNA, the cell ensures that each daughter cell formed during cell division receives an identical set of genetic information. This is vital for the proper functioning and development of organisms.
Thus, the ideal selection is option D.
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A researcher has three different stains that differentiate between keratin, actin, and tubulin when the cells are fixed and stained for microscopic analysis. Which of these stains will the researcher be able to use to study cytoskeletal structures that are stable and do not have the property of dynamic instability
Answer:
Acti-stain => They are stable and do not have the property of dynamic instability.
Explanation:
There are different types of stains in the world of science (biological sciences) today. Staining is used to make differentiation between two or more different samples(microbiology).
So, in organisms that has a well defined nucleus we can find actin, keratin and Tubulin in their cytoskeleton as fibres. The staining process or techniques can be used in differentiating them.
Actin can be found in the cells located in the muscles and also very useful in motility.
Acti-stain for instance, acti-stain 488 was used in staining yeast cells and they are stable and whenever they stain, they are fixed.
What is the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic
potential?
Answer:
A postsynaptic potential is defined as excitatory if it makes it easier for the neuron to fire an action potential. ... A postsynaptic potential is considered inhibitory when the resulting change in membrane voltage makes it more difficult for the cell to fire an action potential, lowering the firing rate of the neuron.
Bu definition, the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential is the ion channels that these open.
The binding of neurotransmitters to their receptors can produce different effects on the postsynaptic neuron, including the opening of ion channels. This causes changes in the membrane potential and leads to the generation of postsynaptic potentials. These postsynaptic potentials can be of two types: postsynaptic excitatory potentials and postsynaptic inhibitory potentials.
In other words, depending on the type of ions that allow the receptor-channels or channels that were activated directly or indirectly by the neurotransmitter to pass, the postsynaptic potential generated may be depolarizing (excitatory postsynaptic potential) or hyperpolarizing (inhibitory postsynthetic potential).
The inhibitory postsynaptic potential changes the charge of the neuron to make it more negatively charged, that is, the membrane potential becomes more negative (hyperpolarizations).
In contrast, an excitatory postsynaptic potential is a change in the electrical charge of a nerve cell or neuron. The neuron begins with a negative charge, but the excitatory postsynaptic potential makes this charge more positive, that is, the membrane potential becomes less negative (depolarization).
So the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential is the ion channels that these open. The binding of neurotransmitters to their receptors can produce different effects on the postsynaptic neuron, including the opening of ion channels. This causes changes in the membrane potential and leads to the generation of postsynaptic potentials.
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Answer:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper.
Explanation:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper. Small Rf values tend to indicate larger, less soluble pigments while the highly soluble pigments have an Rf value near to one.