Answer:
Hydrogen & Oxygen
Explanation:
The muscle weakness of myasthenia gravis results from loss of acetylcholine receptors in the end-plate membrane. the motor neuron action potential being too small to shock the muscle fibers. insufficient acetylcholine release from presynaptic vesicles. excessive acetylcholinesterase that destroys the neurotransmitter. All of the answers probably contribute to the muscle weakness.
Answer:
The correct answer is ''loss of acetylcholine receptors in the end-plate membrane.''
Explanation:
Myasthenia gravis represents a human autoimmune disease. The neuromuscular junction abnormalities that occur in this disease are due to antibody-mediated processes. A reduction in the number of functional acetylcholine receptors on the postsynaptic membrane was established to contribute to the physiological abnormalities of myasthenia gravis. The reduction in receptors is due to immunological alterations directed against the acetylcholine receptor. Normally, when acetylcholine binds to its receptor, it opens allowing the rapid entry of cations, especially sodium. With this, the depolarization of the postsynaptic region of the muscle fiber occurs. Although acetylcholine is normally released in myasthenia gravis, it is not capable of causing an action potential in the muscle sufficient to initiate or weaken contraction. In patients with myasthenia gravis, failure to activate muscles is responsible for myasthenic fatigue. Most patients have elevated serum titers of antireceptor antibodies, which in turn accelerate receptor degradation.
describe the role of enzymes in seeds germination
Answer:
Enzymes such as amylase ,protease and lipase are liable for solubilizing spare food materials in form of starch, protein and lipids correspondingly
in seed and deliver energy and other fundamentals food materials to germinating embryo.
The seed proteins are catalyzed by protease enzyme and break it into amino acid and peptides that a e transferred to growing embryo.
The amino acids obtained from metabolism of the proteins are further used in biosynthesis of enzymes,hormones,proteins, pyrimidines and Purine bases.
The starch is catalyzed by enzyme amylase that provides the food materials for growth and development of embryo . Similarly lipase are enzymes that are responsible for metabolism of the triacylglycerols into glycerols and fatty acids.This is also the source of energy for growing embryo
Name the 5 systems of the human body.
Answer:
Skeletal System
Muscular System
Circulatory System
Endocrine System
Digestive System
are systems of the Human Body
Explanation:
Answer:
Digestive system
Circulatory system
Respiratory system
Nervous system
Skeletal system
If a tRNA molecule has an anticodon which reads AGGCCG, what was the codon on the mRNA molecule?
TCCGGA
UCCGGC
UCCGGU
CTTAAG
The codon is the sequence of nucleotides that carry genetic information that determines which amino acid should be added to the building protein. Nucleotides in this sequence pair with nucleotides from the tRNA anticodon. In the exposed example, the correct codon pairing the given anticodon is is UCCGGC.
Before expplanation, let us review some theoretical frame to answer the question.
During protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction, while tRNA adds the correct amino acids to build the polypeptide, according to the codons readen in the mRNA chain. A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly. Each of the codons represents one of the 20 amino acids used to build the protein. Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid. tRNA allows amino acids to align according to the nucleotidic sequence in the mRNA molecule.
Once the new amino acid joins the growing protein, the binding between the amino acid and the tRNA breaks, releasing the molecule, which is now available to join another amino acid and repeat the cycle.
• Anticodon: Sequence of bases that pairs with the mRNA codon.
• Amino Acid: the amino acid that is codified by the mRNA codon.
Remeber that:
Adenine forms pairs with Uracyl ⇒ A↔UGuanine pairs with Cytosine ⇒ C↔GIn the exposed example, the tRNA anticodon is AGGCCG, so we need to find its complement.
We know that Adenine pairs Uracyl, Guanine pairs Cytosine, and Cytosine pairs Guanine. So,
Anticodon → AGGCCG
Codon → UCCGGC
Related link: https://brainly.com/question/2897187?referrer=searchResults
Answer:
The codon is the sequence of nucleotides that carry genetic information that determines which amino acid should be added to the building protein. Nucleotides in this sequence pair with nucleotides from the tRNA anticodon. In the exposed example, the correct codon pairing the given anticodon is is UCCGGC.
Before expplanation, let us review some theoretical frame to answer the question.
During protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction, while tRNA adds the correct amino acids to build the polypeptide, according to the codons readen in the mRNA chain. A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly. Each of the codons represents one of the 20 amino acids used to build the protein. Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid. tRNA allows amino acids to align according to the nucleotidic sequence in the mRNA molecule.
Once the new amino acid joins the growing protein, the binding between the amino acid and the tRNA breaks, releasing the molecule, which is now available to join another amino acid and repeat the cycle.
• Anticodon: Sequence of bases that pairs with the mRNA codon.
• Amino Acid: the amino acid that is codified by the mRNA codon.
Remeber that:
Adenine forms pairs with Uracyl ⇒ A↔U
Guanine pairs with Cytosine ⇒ C↔G
In the exposed example, the tRNA anticodon is AGGCCG, so we need to find its complement.
We know that Adenine pairs Uracyl, Guanine pairs Cytosine, and Cytosine pairs Guanine. So,
Anticodon → AGGCCG
Codon → UCCGGC
Explanation:
Necesitouna conclusion sobre la microbiologia y bacteriologia me ayudan pliss
Answer:
.
Explanation:
.uehwbgsbabwh hsbsbs
___ is the ability of an organism to change internally to externally in relation to its environment
Answer:
The ability of an organism to change internally or externally in relation to changes in the environment is called Homeostasis. (I'm pretty positive this is the answer and I hope you have an awesome day :)
Need help!!!
what is an element?
~Thx ^_^
Answer:
In chemistry, an element is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei. Unlike chemical compounds, chemical elements cannot be broken down into simpler substances by chemical means.
Give a positive and a negative impact of an environmental law or regulation.
Answer:
negative impact
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.
positive impact
Environmental regulations have greatly improved air and water quality, especially in areas that were dirtiest before regulation. Reducing airborne particulates is especially beneficial, saving thousands of lives and preventing millions of illnesses each year.
1. alveoli, tiny air sacs within the lungs muscle below the lungs used for, 2. bronchi, breathing the two tubes into which the, 3. diaphragm, trachea divides before entering the lung
Answer:
1. Alveoli: tiny air sacs within the lungs.
2. Bronchi: the two tubes into which the trachea divides before entering the lung.
3. Diaphragm: a muscle below the lungs used for breathing.
Explanation:
Living system can be defined as the internal systems of organisms and how materials circulate within organisms.
Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.
Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, metabolism, digestion, etc.
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
1. Alveoli: it comprises tiny air sacs and it's located within the lungs of living organisms.
2. Bronchi: these are the two (2) tubes into which the trachea divides (the right bronchus and the left bronchus) before entering the lung.
3. Diaphragm: it's a muscle located below the lungs and typically used for breathing in all living organisms.
what is the equation for cellular respiration? and which items are the reactants and which items are the products?
Answer:
C6H12O6 + O2 ------> CO2 + H2O + ATP. The reactants are oxygen and glucose. The products are ATP, CO2, and water.
OAmalOHopeO
The state of maintaining a stable internal environment regardless of changing external conditions is called
.
Answer:
homeostasis
Explanation:
Answer:
homeostasis
Explanation:
ik
Which of the following animals has a solitary lifestyle ? A.sika deer B.elephant C. zebra D.rhino
Answer:
A sika deer
my ans is right or wrong
Answer: A: Sika Deer
Explanation: Adult males are solitary for most of the time and will band together sometimes.
A car burns gasoline as it moves down the road. Which energy transformation
is the car performing?
A. Kinetic energy to chemical energy and light energy
B. Potential energy to sound energy and nuclear energy
C. Chemical energy to kinetic energy and thermal energy
D. Thermal energy to kinetic energy and nuclear energy
Answer:
A
Explanation:
Cerebrospinal fluid (CSF) is formed by capillary knots called the ________________________, which hangs inside the ________________________ of the brain. Ordinarily, CSF flows from the lateral ventricles into the ____________ ventricle and then through the _______________ into the fourth ventricle. Some of the fluid continues down the ________________________ of the spinal cord, but most of it circulates into the ________________________ by passing through three tiny openings in the walls of the ________________________. As a rule, CSF is formed and drained back into the venous blood at the same rate. If its drainage is blocked, a condition called ________________________ occurs, which results in increased pressure on the brain.
Answer:
1. Choroid Plexuses
2. Ventricles
3. third
4. Cerebral Aqueduct
5. Central Canal
6. Subarachnoid space
7. Forth Ventricle
8. Hydrocephalus
Explanation:
Cerebrospinal fluid formed by capillary knots called Choroid Plexuses which is hanged inside ventricles. There are four ventricles in which CFS flows from lateral to third and from cerebral aqueduct to forth ventricle. The meninges covers spinal cord which extends more inferiority to form a sac from which cerebrospinal fluid can be withdrawn without damage to spinal chord.
Unique feature of osmosis is that
(1) energy is required
(2) it involves movement of solutes
(3) it occurs across membranes only
(4) it is seen only in animals
Answer:
I believe the answer is (3)
Explanation:
"Osmosis is a special type of diffusion, namely the diffusion of water across a semipermeable membrane"
"Osmosis only occurs with a semipermeable membrane"
Khan and sciencedirect
Single Strand Binding Proteins are responsible for:
A. keeping the strands separated during replication.
B. unwinding and separating the DNA strands.
C. adding the new bases.
D. linking the short sections of the lagging side.
Reset Selection
Answer:
A. keeping the strands separated during replication
Explanation:
Prior to the process of DNA replication, the double-stranded DNA must first be separated into single strands by an enzyme called DNA helicase. This is done so that each DNA strand can serve as template for the synthesis of another.
After the unwinding and separation, the single strands still need to be kept apart during the synthesis of new nucleotides by DNA polymerase. This role of keeping the strands separated during replication is carried out by SINGLE STRAND BINDING PROTEINS.
Certain antibacterial drugs such as trimethoprim and the sulfonamide drugs (e.g., sulfadiazine, sulfamethoxazole) selectively inhibit the synthesis and function of nucleic acids and certain essential amino acids by impairing the production of ______ in bacterial cells.
Answer:
Folic acid
Explanation:
Antibacterial drugs helps fight the bacterial infections. these drugs helps release essential amino acids by impairing the production of folic acids in bacterial cells. Bacteria infection may get severe and hazardous if they are leave untreated.
please answer urgently
you dont need to explain it
Answer:
a, chromatin
Explanation:
The Paleo-Indian skull of Kennewick Man, dated to 8,400 years B.P. is long and narrow; the face and jaws are robust, is an anatomical difference with late prehistoric and living Native Americans that have short, round skulls with gracile faces. In what state of the USA was Kennewick Man located
Answer:
Washington, near Seattle
Explanation:
Found in 1996 in Columbia park at the bottom of the Columbia River
This is land currently owned by the US Army Corps of Engineers
The energy to turn raw materials into food is powered by ________ and occurs in the plant’s ________.
A. water, mitochondria
B. glucose, leaves
C. light, chloroplasts
D. oxygen, chlorophyll
Answer:
C. light, chloroplasts
Explanation:
Put the main steps of genetic engineering in the correct order.
1. Replicate the new organism
II. Isolate the genes from the specialist cell
III. Select the desired trait
IV. Insert the genes into the target organism
A. I, II, IV, III
B. II, I, IV, III
C. III, II, IV,
Answer:c
Explanation: hope this helps
The correct order is,
I. Replicate the new organism.
II. Isolate the genes from the specialist cell.
III. Select the desired trait.
IV. Insert the genes into the target organism.
What is genetic engineering?Genetic engineering (also named genetic modification) exists as a system that operates laboratory-based technologies to change the DNA makeup of an organism. This may influence changing a single base pair (A-T or C-G), deleting a region of DNA, or adding a unique element of DNA.
Genetic engineers change, splice, eliminate, and rearrange genes to change an organism or classes of organisms. Genetic engineering, also called genetic modification or genetic manipulation exists in the modification and manipulation of an organism's genes operating technology.
Genetic engineering stands performed in three fundamental steps. These exist,
(1) The isolation of DNA components from a donor organism.
(2) The insertion of an isolated donor DNA fragment into a vector genome.
(3) The effect of a recombinant vector in a suitable host.
Hence, The accurate order is,
I. Replicate the new organism.
II. Isolate the genes from the specialist cell.
III. Select the desired trait.
IV. Insert the genes into the target organism.
Thus, Option C is correct.
To learn more about Genetic engineering refer to:
https://brainly.com/question/2780091
#SPJ2
In Florida, the building collapsed so far away that there was a cordon and no one was allowed to go near and police were standing guard. Is it weird that this kind of accident rescue doesn't let people get close?
Using the following nucleotide sequence, predict the complementary strand sequence:
5'-TTAAACCCGTTGGAAC-3'
5'-AATTTGGGCAACCTTG-3'
3'-AATTTGGGCAACCTTG-5'
03-CCGGGTTTACCAAGGT-5'
0 3'-TTAAACCCGTTGGAAC-5'
The predicted the complementary strand sequence for 5'-TTAAACCCGTTGGAAC-3' is 3'-AATTTGGGCAACCTTG-5'.
What is DNA?Deoxyribonucleic acid or DNA is a double helix molecule composed of two complementary strands.
According to the base pair rules, Adenine pairs with Thymine and Guanine pairs with Cytosine.
In conclusion, the predicted the complementary strand sequence for 5'-TTAAACCCGTTGGAAC-3' is 3'-AATTTGGGCAACCTTG-5'.
Learn more about base complementarity here:
https://brainly.com/question/19670398
#SPJ1
Answer:
Your answer would be AATTTGGGCAACCTTG-5′
Explanation:
Define instar larva.
Answer:
For most insect species, an instar is the developmental stage of the larval forms of holometabolous (complete metamorphism) or nymphal forms of hemimetabolous (incomplete metamorphism) insects, but an instar can be any developmental stage including pupa or imago (the adult, which does not moult in insects).
Explanation:
Why monosaccharides are sweet whereas polysaccharide are not
Answer:
sweet-receptors bind to specific types of molecules, namely monosaccharides and disaccharides. Polysaccharides are not as sweet because they do not readily bind to the sweet-receptors on our tongue, as the other smaller molecules do
Answer:
ywetywte
Explanation:
gwhwhwhebebd
plz anyone awncer this
Answer:
Vasoconstriction is the opposite of vasodilation. While vasodilation is the widening of your blood vessels, vasoconstriction is the narrowing of blood vessels. It's due to a contraction of muscles in the blood vessels. When vasoconstriction occurs, the blood flow to some of your body's tissues becomes restricted
Homeostasis is the maintenance of a stable internal environment.
I Hope this will help you if not then advance sorry :)
A scientist wishes to create bacterial colonies on an agar plate for observation of growth. Unfortunately, directly adding bacteria from the original culture results in too many bacterial colonies to count. In order to create a solution of proper bacterial concentration for observation, the scientist performs a three-step 1:100 serial dilution of the original bacterial culture. What is the dilution factor of the final solution
Answer:
10⁶
Explanation:
A 1:100 serial dilution is a dilution in which the concentration decreases 100 fold (i.e., in each dilution the concentration of the culture must be multiplied by 10⁻²). The question above indicates that a three-step 1:100 dilution was applied, which means >> 10⁻² x 10⁻² x 10⁻² = 10⁻⁶. Moreover, the dilution factor can be calculated by dividing the volume of the diluted solution by the volume of the concentrated solution. The dilution factor is the inverse of dilution, thereby in this case this value is equal to 10⁶ (dilution = 10⁻⁶ >> dilution factor = 10⁶).
Pros and cons about lobsters not feeling pain…
Answer:
The pro of not feeling pain is not feeling pain and the con is pain help you survive like hot hand on stove if u don’t feel pain you probably won’t take your hands off and it can cause death and stuff (u probably know what I mean I hope)
Explanation:
Which of these factors would most likely strengthen the effectiveness of
Answer:
Which of these factors would most likely strengthen the effectiveness of CITES?
Answer: Funding for on-the-ground enforcement
The compound 2,4-dinitrophenol (DNP) is a lipid soluble compound that has been used as a weight loss agent. It functions this way by causing the inner mitochondrial membrane to become leaky with respect to protons. Which result might be expected if cells treated with DNP were examined in detail
Answer:
ATP production would be slower in these cells than in untreated cells
Explanation:
Oxidative phosphorylation is the third stage of cellular respiration, which occurs in the mitochondria of animal and plant cells. Oxidative phosphorylation represents the most efficient pathway to generate energy in animal cells by the production of Adenosine triphosphate (ATP) as a consequence of the transfer of electrons from nicotinamide adenine dinucleotide (reduced form) (NADH) or flavin adenine dinucleotide (reduced form) (FADH2) to molecular oxygen (O2) through a sequential series of electron carriers. The 2,4-Dinitrophenol (DNP) poison is an uncoupler of oxidative phosphorylation that carries protons across the mitochondrial membrane, thereby leading to a rapid consumption of energy without the production of ATP. This mitochondrial uncoupler (DNP) has been used as a dieting drug during the 30's decade (1930), but was rapidly banned due to its side effects, which include, among others, tachycardia, hyperthermia, tachypnea, and metabolic acidosis.
