Answer:
a). Voltage-gated Ca2+ channels
b). the motor end plate
c). Threshold, voltage-gated Na channels
d). sodium ions
Explanation:
a). The voltage-gated [tex]Ca^{2+}[/tex] channels are the key transducers of the membrane potential that changes into a intracellular [tex]Ca^{2+}[/tex] transients which initiates the physiological events. When the action potential makes a contact with axon terminal, the voltage-gated [tex]Ca^{2+}[/tex] channels opens.
b). The acetylcholine is the main neurotransmitter of the parasympathetic nervous system. It helps in blood vessels dilation, muscle contraction, and perform many more functions.
It diffuses with the synaptic cleft that is located on the motor end plate of the nervous system.
c). The membrane potential is also known as the membrane voltage or the transmembrane potential. When it recaches the threshold, the voltage-gated Na channels opens to spread the action potential across sarcolemma.
d). The sodium ions in case of acetylcholine binding moves to the muscle fiber due to which the membrane potential rises.
Which sensory organ would best detect the movement of a rabbit?
A.
B.
C.
D.
14. What do the embryos of different vertebrate species have in common?
Answer:
Similarities in embryos are evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails. Most vertebrates, except for fish, lose their gill slits by adulthood.
Explanation:
itz from gologolo lol I hope it helps uh
keep smiling #smilies
Chris is studying oxidation and reduction reactions. Which of the following could she use as an example of an oxidation reaction?
Answer:
This question lacks options, the options are as follows:
A. formation of ATP from glucose during respiration
B. formation of carbohydrates from carbon dioxide during photosynthesis
C. formation of oxygen from water molecules during photosynthesis
The answer is A. formation of ATP from glucose during respiration
Explanation:
Oxidation reaction is a type of reaction that involves the loss of electrons (e-) by a compound or molecule. The compound/molecule that loses the electron is said to be OXIDIZED.
According to this question, Chris is studying oxidation and reduction reactions (redox). An example of oxidation reaction she could use is FORMATION OF ATP FROM GLUCOSE DURING RESPIRATION. Glucose (C6H12O6) undergoes series of oxidation reactions in glycolysis, Krebs cycle and ETC, as it loses electrons to eventually produce energy (ATP).
During conjunction the genetic material will be transferred through
a. Capsule
b. Cell wall
c. Pili
d. Medium
Answer:
d.
Explanation:
During conjunction the genetic material will be transferred through pilli.
What is conjugation?During bacterial conjugation, genetic material is transferred from one bacterial cell to another through a structure called a pilus (plural: pili). Pili are thin, hair-like projections that extend from the surface of the bacterial cell and are used for a variety of purposes, including adherence to surfaces and transfer of genetic material. When two bacterial cells are in close proximity to one another, one of the cells can extend a pilus towards the other cell.
The pilus will then make contact with the recipient cell and transfer a small piece of DNA, known as a plasmid, across the intercellular space. This process allows bacteria to exchange genetic material, which can lead to the acquisition of new traits and the spread of antibiotic resistance. Capsules, cell walls, and the surrounding medium are not involved in the transfer of genetic material during bacterial conjugation.
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What is the most likely
explanation for the DNA found in
mitochondria?
A. Mitochondria was once a prokaryotic
organism.
B. Mitochondria was once a eukaryotic
organism.
C. Mitochondria was once a primkaryotic
organism.
Answer:
A
Explanation:
its a
The most likely explanation here is that mitochondria was once a prokaryotic organism. The correct option is A.
What is mitochondria?Mitochondria are membrane-bound cell organelles that produce the majority of the chemical energy required to power the cell's biochemical reactions (mitochondrion, singular).
The mitochondrial energy is stored in a small molecule known as adenosine triphosphate (ATP).
Mitochondria are special compartments (organelles) in our cells best known for their role as powerhouses, converting food molecules into ATP, a molecular fuel for the rest of the cell.
Mitochondria and chloroplasts most likely evolved from engulfed prokaryotes that were once self-contained organisms.
At certain point, an aerobic prokaryote was engulfed by a eukaryotic cell, which then formed an endosymbiotic relationship with the host eukaryote, eventually developing into a mitochondrion.
Thus, the correct option is A.
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What is the name of the daily cycle and what happens during it?
Answer:
Tanjiro
Hehehehehe
Easy dub
Answer:
ITS CALLED THE WATER CYCLE AND WATER CYCLES
Explanation:
Describe sea turtle populations during the late 1400’s
Answer:
6.5 million sea turtles
Recent estimates show us that there are nearly 6.5 million sea turtles left in the wild with very different numbers for each species, e.g. population estimates for the critically endangered hawksbill turtle range from 83,000 to possibly only 57,000 individuals left worldwide.
Explanation:
hope it helps you
porfavor especifica que quieres que te diga
Explanation:
What is the difference between the rough and smooth endoplasmic reticulum?
Answer & Explanation:
The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface. It possesses ribosomes attached to its membrane.
Which best describes adenosine triphosphate (ATP)?
A waste product molecule that is produced by cells but cannot be used by them.
A high energy molecule that is used by every cell in the body as an energy carrier.
A process that is used to create energy when oxygen is available to the body.
A process that is used to create energy when oxygen is not available to the body.
Answer:
a high-energy molecule that is used by every cell in the body as an energy carrier.
Answer:
A high energy molecule that is used by every cell in the body as an energy carrier.
Explanation:
Adenosine triphosphate, also known as the "energy currency" of the cell is an organic molecule that readily supplies energy to the cells to carry out metabolic and catabolic functions. This molecule consists of a nitrogenous base known as adenine, ribose sugar, and three phosphate molecules. The hydrolysis of ATP provides energy for muscle contraction, nerve impulses, signaling for hereditary materials like DNA and RNA, as well as phosphorylation.
Which statement explains the goal of using sustainable practices in food
production?
A. It feeds a growing population without harming ecosystems or
humans.
B. It feeds a shrinking human population while still preserving
ecosystems.
C. It keeps a few populations healthy while still generating high
profits
D. It keeps farmers in business by earning them the highest profits.
Answer: A. It feeds a growing population without harming ecosystems or humans.
Explanation:
Sustainable food production refers to the method of using processes that conserve non-renewable energy, non-polluting, economically efficient, and are also safe for everyone in the society. Also, the needs of the future generation isn't compromised.
The statement explains the goal of using sustainable practices in food
production is to feed a growing population without harming ecosystems or humans. Therefore, the correct option is A.
What term best describes the role of the duck?
O carnivore
O producer
O herbivore
O ominvore
Answer:
omnivores
Explanation:
Ducks are omnivores. Ducks are waterfowl, and like other waterfowl, they eat both plant and animal matter
Her eyes are wide-set and slightly slanted. Her nose is short and flat, and she keeps her mouth slightly open. There is a straight crease across her palm, and her fifth digit is unusually short. The doctor tells her parents she has an inherited disorder. If you were the doctor what would you diagnosis Kate with? Discuss the etiology of Kate’s disorder? What is the biggest risk factor for this disorder? How can or will this disorder affect Kate? What test could have been completed to diagnosis this disorder before Kate’s birth?
Answer:
- These morphological features belong to Down syndrome.
- Diagnosis: Down syndrome (Trisomy Extra chromosome 21).
- Etiology: the presence of three copies of the autosomal chromosome 21 instead of two copies in body (somatic) cells.
- Most important health problem: Down syndrome increases the risk of developing Alzheimer's disease (other health problems include heart congenital defects, vision problems, hearing loss, hypothyroidism)
- Diagnostic test: Amniocentesis
Explanation:
Down syndrome (DS) is the most frequent chromosomal abnormality which is generally caused by the presence of an extra copy of autosomal chromosome 21, thereby it is an autosomal trisomy (trisomy 21). DS is often associated with intellectual disability and increased risk of developing Alzheimer's, as well as health problems including, among others, heart congenital defects, vision problems, hypothyroidism, blood disorders, hypotonia, endocrine problems, dental problems, seizures, etc. Amniocentesis is the most common invasive prenatal diagnostic procedure which is used to identify chromosomal abnormalities such as trisomy 21 (Down syndrome). Amniocentesis is done between 15 weeks and 20 weeks of pregnancy.
What would happen to the weight of an ice cub if it melted?
A) it would weigh a little more.
B) it would weigh a lot less.
C) it would weigh the same.
D) it would weigh a lot more.
Answer:
C. it would weigh the same
Explanation:
The mass of the ice doesn't change as the ice melts, so the volume displaced remains the same whether its is solid or liquid.
Glomerulonephritis is an inflammatory condition that causes the walls of the glomerull to become
swollen and ruptured. The best indication of this condition is the presence of:
a. red blood cells and plasma proteins in the urine
b. urea and amino acids in the urine
c. glucose in the urine
d. glucose, amino acids and fatty acids in the urine
Answer:
D
Explanation:
Since the kidney ha essentially stopped working that is the most common thing
Help someone with this
S. pyogenes is a gram-positive bacterium. Gram-positive bacteria have structural differences that distinguish them from gram-negative organisms.
a. True
b. False
Answer:
True
Explanation:
Streptococci pyogenes is a gram positive bacterium that is found in the dental , collective tissues and in the respiratory tracts. It is different from gram negative bacteria because if it structure. It has a thick peptidoglylcan layer and no lipid membrane compared to gram negative that have thin peptidoglylcan layer and outer lipid membrane.
Thụ thể nào liên kết với một phân tử ngoài màng tế bào, hoạt hoá một protein kinase bên trong tế bào?
Answer:
?
Explanation:
Dehydration synthesis leads to ?
Explanation:
Dehydration synthesis leads to the formation of water..
Answer:
Dehydration synthesis is the process of joining two molecules, or compounds, together following the removal of water. During a condensation reaction, two molecules are condensed and water is lost to form a large molecule.
Explanation:
Hope this helps.
Please help!!!
Can you please give me an environmental risk or benefit for artificial selection?
Answer: Artificial selection appeals to humans since it is faster than natural selection and allows humans to mold organisms to their needs. Like many animals kept in human captivity, mating pairs of pigeons are often paired together based on their genetics to achieve the most desirable traits in their offspring.
Explanation:
PLSSSSSS HELP LIMTED TIME. 150 POINTS!!!
Name structure B in the photo.
Answer:
Structure B is an Ovary
Explanation:
How vulnerable
How vulnerable is the human body? I was told to never be afraid of anyone
Answer:
I don't know what you mean but emotionally the human body is very fragile and physically the human body is very strong
How can a change to Earth's tilt affect Earth's climate?
Answer:
It makes seasons more extreme
Explanation:
Yeasts life cycle is categorized as
Answer:
Alteration in generation
Explanation:
It's because yeast has both haploid and dipliod phases in its life cycle ♂️
DDT is an insecticide that accumulates in the fatty tissues of animals whose concentration increases with each link of the food chain. Which group of organisms is most likely to accumulate the highest concentration of DDT?
The question is incomplete, the complete question is shown in the image attached
Answer:
D
Explanation:
Pollutants tend to an increase in concentration in the fatty tissues of animals compared to the concentration of the same pollutant in the environment.
Also, tend to increase in the fatty tissues of organisms at each trophic level.
Hence, as a result of this, the highest concentration of the insecticide is accumulated by the organisms at the highest level of the food chain. So, the tertiary consumers accumulate the highest concentration of the insecticide.
the crime scene
Explain the goal of the case.
Answer:
hmmm
Explanation:
Answer:
to find the thug shhhh pigfish cashier iridescent shards v guy hff
A tetrad is composed of
What type of graph can show positive correlation, negative correlation, or no
correlation?
Answer:
A scatter plot shows all of those
Explanation:
Density is mass divided by volume (d = m ÷ v). Based on the graph, what happens to a fixed mass of water when it is cooled from 4°C to 0°C?
Answer:
you get -29580 C
Explanation:
you have to add and then multiply 4 by it 4 time and then use the formula and change it to a geometriconaical formula to get that answe
Determine the new concentration, in mg/mL, of the starch solution you diluted in the Erlenmeyer flask. Recall from the Procedures that there are 20 mg/mL of starch in the 2% solution. Use that to determine the milligrams of starch in the diluted starch solution. Then, divide the milligrams of starch by the total volume of the solution, which includes the water plus the starch solution. Record your results for use in future questions.
a. 2 mg/mL
b. 0.05 mg/mL
c. 0.2 mg/mL
d. 10 mg/mL
Answer:
0.05 mg/mL ( B )
Explanation:
Given data:
20 mg/ml starch
2% solution = 2g of solute is in 100g of solvent
Determine the new concentration in mg/ml
Dilution equation = C1V1 = C2V2
new concentration ; applying the dilution factor
dilution factor = 1 : 400 ; ( 2 /400 )g = 0.005 g of solute is present in every 100 mL
∴ new concentration = 0.00005 g / 1 mL * ( 1000 mg / 1g ) = 0.05 mg/mL
A tool that helps in checking for the accuracy of the primers
Explanation:
i think 'Primer-blast' can