The two DNA strands are held together by hydrogen bonding between the bases on the different strands; therefore, all the bases are on the inside of the double helix, and the sugar-phosphate backbones are on the outside.
The two strands are held collectively via hydrogen bonds between pairs of bases: adenine pairs with thymine, and cytosine pairs with guanine.
Covalent bonds arise inside every linear strand and strongly bond the bases, sugars, and phosphate groups (each within each thing and between additives).
Hydrogen bonds occur among the two strands and contain a base from one strand with a base from the second in complementary pairing.
Learn more about Hydrogen bonds here: https://brainly.com/question/1420470
#SPJ4
The ability of a nonpathogen or weakly pathogenic microorganism to cause disease primarily in an immunocompromised host is termed a(n) ______ infection.
The ability of a nonpathogen or weakly pathogenic microorganism to cause disease primarily in an immunocompromised host is termed Opportunism infection.
What is pathogen and nonpathogen?In contrast to nonpathogenic bacteria, which do not infect or harm other living things, pathogenic bacteria are those that can cause diseases.
What is opportunism?An opportunist is an organism that can draw its sustenance from a variety of sources, but when favorable circumstances present themselves, the organism quickly seizes the chance to flourish.
What is opportunistic pathogen?A class of microorganisms known as opportunistic pathogens cause infections in hospitals, in immunocompromised patients, or in patients with underlying disorders like cystic fibrosis, which promotes infection (Koch and Hoiby, 1993).
Learn more about opportunism here:
https://brainly.com/question/17259533
#SPJ4
When trees are uprooted and the land left bare, what happened to the rain water?
Answer:
when trees are cut down, the bare surfaces left behind absorb more heat than the forest they replaced. And that heat helps draw air upward, pulling moist air in from nearby forested land that increases rainfall in the immediate area.
Bioaugmentation involves Group of answer choices adding nitrogen and phosphorus to an area in need of remediation. adding specialized microbes to an area in need of remediation. producing humus from plant waste. producing a methane by-product for powering facility equipment. using microbes to filter out impurities from leach water.
Answer:
Bioaugmentation involves adding specialized microbes to an area in need of remediation.
Explanation:
The practice of adding specialized microbes for degrading specific substances such as contaminants, and biodegradable substances. This will increase the rate of degradation or catabolism of the said materials. They will help to resolve the problem of waste that is being produced every day.
They fall into two different strategies as they can be enriched by indigenous and non-indigenous microorganisms. They are not used for enriching the nutrients in the soil, producing humus, methane, etc. There can be byproducts of bioaugmentation and such byproducts can be increased availability of soil nutrients, methane, etc. But it is not the primary purpose of bioaugmentation.
Learn more about microbes here:
https://brainly.com/question/14571536
#SPJ4
HELP!! This is part of a big project I have and it’s a big part of my grade please help
Cells can make new cells. One cell can (a) ____________ into two new cells. This is called (b)__________________. The process of cell division goes through various states. First, the cell nucleus (c)________________ into two. A new cell surface membrane then (d)____________ the cell divides. The two new cells are called (e)_______________ and they are small. They will grow and become larger. They grow by getting (f)______________ from the food that is eaten. Once they grow to full size they can also (g)_____________. If cells divide more quickly than they should, or divide in the wrong way, (h)_____________ can develop.
Single-cell recording studies of the motor control of reaching movements have demonstrated that neurons in the motor cortex are selectively active based on the
The single cell recording studies of the motor control of reaching movements have demonstrated that neurons in the motor cortex are selectively active based on the movement of the body.
Describe the motor cortex.The primary function of the motor cortex is to generate signals to direct the movement of the body.It is part of the frontal lobe and is anterior to the central sulcus.It consists of the primary motor cortex, premotor cortex, and supplementary motor area.The primary motor cortex, situated in Brodmann area 4, sends most electrical impulses coming out of the motor complex.The premotor complex is situated just anterior to the primary motor cortex. Its function is to prepare for movements, especially proximal musculature.The supplementary motor cortex is on the medial surface of the longitudinal fissure, just anterior to the leg representation in the primary motor cortex. Although not fully understood, proposed functions include body postural stabilization and coordination.To learn more about Motor cortex,
https://brainly.com/question/26398253
#SPJ4
Some of the mechanisms by which enzyme catalytic activity is controlled are: A. allosteric control. B. feedback inhibition. C. covalent modification. D. A and C. E. A, B, and C.
Some of the mechanisms by which catalytic activity is controlled are option(e) i.e, A, B, and C, (allosteric control, feedback inhibition, and covalent modification)
What is the catalytic activity?The acceleration of chemical reactions brought on by the presence of a catalyst. A catalyst value is measured as a rise in the reaction rate.
Specific surface area, pore structure, oxygen-containing functional groups, and the amount of ash and its components all have an impact on how well AC catalysts perform. The role that specific surface areas and pore shapes play in methane adsorption is significant.
Examples are:
1) The hydrogenation of palm oil into margarine uses the metal nickel or Ni. 2) The Haber process makes use of iron, Fe.There are three different forms of catalysis, depending on the nature and physical condition of the materials used in the chemical reaction.
Homogeneous catalysis Heterogeneous catalysisAutocatalysis.To know more about catalysis refer to: https://brainly.com/question/27950063
#SPJ4
The inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. This increases the surface area for ___________________.
Answer:
Oxidative phosphorylation
Explanation:
Oxidative phosphorylation occurs in the mitochondria of all animal and plant tissues, and is a coupled process between the oxidation of substrates and production of ATP.
What is it called when vertebrates have well-developed sense organs on the head?
A) Endoskeleton
B) Dorsal Root Ganglia
C) Cephalization
D) Enclosed Nervous System
Answer:
Your answer is C) Cephalization
Explanation:
Cephalization is the mouth, sense organs, and nerve ganglia that become concentrated at the front end of an animal, producing a head region. And it is also a evolutionary trend spanning over many generations. Hope this helped :)
Answer:
I hope this helps.
Explain how chromosomes work?
Answer:
Hope my answer will help you .
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
(ﾉ◕ヮ◕)ﾉ*.✧STAY CONNECTED ❣️
The afferent and efferent neurons together form the The afferent and efferent neurons together form the central nervous system. autonomic division. somatic motor division. visceral nervous system. peripheral nervous system.
The afferent and efferent neurons together form the peripheral nervous system.
What are the parts of the peripheral nervous system?The peripheral nervous system is made up of nerves and nerve ganglia. See how they are distributed and how they act in the body. The nerves of the peripheral nervous system are like cords formed by nerve fibers arranged and surrounded by connective tissue.
in this case, the peripheral nervous system is responsible for the afferent and efferent neurons together.
See more about peripheral nervous system at brainly.com/question/328696
#SPJ1
Select the correct answer.
Why is the nucleus considered the command center of the cell?
A.
It contains the genetic instructions for every function of the cell.
B.
It is the cell’s powerhouse and processes energy for the cell.
C.
It is the organelle present in both prokaryotic and eukaryotic cells.
D.
It is responsible for packaging proteins for delivery out of the cells.
The reason animals need a continuous supply of oxygen jis to _______________________. make carbon dioxide dispose of carbon dioxide carry out glycolysis obtain energy from their food
The reason animals need a continuous supply of oxygen is to Obtain energy from their food.
The most fundamental reason why animals need a non-stop delivery of oxygen is without it animals can't achieve sufficient power from their meals.
Cells require a steady delivery of power to generate and preserve the biological order that keeps them alive. This electricity is derived from the chemical bond energy in food molecules, which thereby function as fuel for cells.
The animal's metabolism converts oxygen into strength. All through this system, a waste gas called carbon dioxide is produced. To remove it, the carbon dioxide is carried lower back to the lungs, where its miles are collected and exhaled.
Learn more about metabolism here: https://brainly.com/question/461228
#SPJ4
If an egg that contains 24 chromosomes instead of 23 chromosomes is fertilized by a normal sperm, the result is ____________ because one type of chromosome is present in three copies.
If an egg that contains 24 chromosomes instead of 23 chromosomes is fertilized by a normal sperm, the result is trisomy because one type of chromosome is present in three copies.
What is trisomy?The presence of an extra chromosome in some or all of the body's cells. Trisomy causes that chromosome to have three total copies rather than the typical two copies. A trisomy is a type of aneuploidy (an abnormal number of chromosomes). For instance, having three copies of chromosome 21 rather than the customary two copies results in Down syndrome (trisomy 21), which is a genetic condition.
The additional chromosome leads to meiotic abnormalities, which are exhibited by abnormal associations at metaphase I, asymmetrical chromosomal separation, laggard and bridge creation at anaphase I, and abnormal associations at metaphase II. As a result, trisomic individuals develop imbalanced gametes (n+ 1).
Learn more about trisomy here:
https://brainly.com/question/24285865
#SPJ4
In acute respiratory distress syndrome (ARDS), alveoli and respiratory bronchioles fill with fluid as a result of which mechanism
The smallest blood arteries in the lungs leak fluid into the tiniest air sacs where the blood is oxygenated, which is the mechanical cause of ARDS.
What is the causes of ARDS?Sepsis, a dangerous and widespread bloodstream infection, is the most typical cause of ARDS. breathing in dangerous toxins. ARDS may develop as a result of breathing toxic gases, excessive smoke concentrations, aspirating vomit, or near-drowning incidents. acute pneumonia.
Sign of respiratory distress
Breathing rate.Color changes.Grunting.Nose flaring.Retractions etc.,Learn more about respiratory distress here:
https://brainly.com/question/20819044
#SPJ4
Identify the error in the following statement: “Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where chemical energy is used to convert carbon dioxide and water into glucose and oxygen.”
A. “chloroplasts” should be “mitochondria”
B. “water” and “oxygen” should be switched
C. No errors
D. “chemical” should be “light”
What microscopy tool would be most useful in observing the structure of a virus?.
Some taxonomists have developed an alternate system of classification in which tarsiers, monkeys, apes, and humans are placed together in the suborder Group of answer choices Prosimii. Lorisoidea. Haplorhini. Strepsirhini.
Prosimii taxonomists have developed an alternate system of classification in which tarsiers, monkeys, apes, and humans are placed together.
The answer is option A.
Historically, the order Primates was divided into Prosimii (the primitive primates: lemurs, lorises, and tarsiers) and Anthropoidea (the bigger-brained monkeys and apes, consisting of humans).
Part of the corridor of Human Origins. People are primates–a numerous group that includes a few two hundred species. Monkeys, lemurs, and apes are our cousins, and all of us have developed from a commonplace ancestors over the last 60 million years. Due to the fact primates are associated, they may be genetically similar.
Learn more about Prosimii here: https://brainly.com/question/25605883
#SPJ4
 Explain how to make a cheek cell slide
Methods
Take a clean cotton swab and gently scrape the inside of your mouth.
Smear the cotton swab on the centre of the microscope slide for 2 to 3 seconds.
Add a drop of methylene blue solution and place a coverslip on top. ...
Remove any excess solution by allowing a paper towel to touch one side of the coverslip
During an action potential, activation of voltage-gated sodium and potassium channels occurs at different rates. What is the effect of this difference on ion flow across an axon membrane?.
K+ departs the cell after Na+, which enters the cell first. Ions can move freely across the axon membrane because of the difference during the action potential.
Because sodium contains a positive charge, the neuron becomes more positive and depolarized. Potassium channels take longer to open. As soon as the cell does open, K+ rushes out, reversing the depolarization.Sodium channels close during the peak of the action potential when potassium leaves the cell. When potassium ions are effluxed, the membrane potential is lowered or the cell becomes hyperpolarized.Because it depends on adenosine triphosphate (ATP) for power, the sodium/potassium pump is sometimes referred to as an ATPase. Outside of the cell, the concentration of Na+ is greater than inside the cell. while the concentration of K+ is is greater inside the cell than outside.learn more about action potential here: https://brainly.com/question/6705448
#SPJ4
A peacock is significantly more colorful than a pea hen and has a much larger tail. These traits allow the peacock to attract a mate but also make the peacock more visible to predators. This is an example of:
Answer:
This is an example of runaway sexual selection
Control of respiration is based on input from mechanoreceptors that monitor ______ and chemoreceptors that monitor ______.
Control of respiration is based on input from mechanoreceptors that monitor lung inflation and chemoreceptors that monitor blood O2, CO2, and pH.
Chemoreceptor feedback is one method used to regulate breathing. The brain's central chemoreceptors, which react to changes in the partial pressure of carbon dioxide in their immediate environment, and arterial chemoreceptors, which monitor and react to changes in the partial pressure of oxygen and carbon dioxide in the arterial blood, are two different types of respiratory chemoreceptors. Ventilation levels act as though they were controlled to keep the arterial blood adequately oxygenated and to maintain a consistent level of carbon dioxide partial pressure. Both the rate and depth of breathing rise when chemoreceptor activity is increased due to hypoxia or an increase in carbon dioxide partial pressure, which returns oxygen and carbon dioxide partial pressures to their normal levels.On the other hand, excessive ventilation lowers the partial pressure of carbon dioxide, which reduces the activity of chemoreceptors and decreases ventilation.learn more about chemoreceptors here; https://brainly.com/question/12061102
#SPJ4
HELP PLEASE
Pathogen-specific defenses in the body include all of the following EXCEPT:
A. t-cells
B. Ingestion of bacteria
C. B-cells
D. Antibodies
Answer:
B. Ingestion of bacteria
Explanation:
Phagocytosis is not pathogen-specific
Ingestion of bacteria is not a pathogen-specific defence; it is a general mechanism of the immune system to clear any harmful particles, including bacteria. The correct option is B.
Pathogen-specific defences involve T-cells, B-cells, and antibodies, which target and eliminate specific types of pathogens in a highly specialized manner.
T-cells: They are a part of the pathogen-specific defence system. T-cells help identify and destroy infected cells and regulate the immune response.B-cells: B-cells are another type of white blood cell that is essential in the immune response. They produce antibodies, which are proteins that specifically target and neutralize specific pathogens. D. Antibodies: Antibodies are produced by B-cells and are a key part of the pathogen-specific defence system. They recognize and bind to specific pathogens, marking them for destruction by other immune cells.Whereas, ingestion of bacteria is a general mechanism of the immune system, where white blood cells called macrophages engulf and destroy bacteria and other foreign particles.
Thus, the correct answer is B.
To know more about Pathogens, click here:
https://brainly.com/question/32249576
#SPJ3
Alopecia, also known as __________, is the partial or complete loss of hair that occurs most commonly on the scalp.
Answer:
Baldness
Explanation: hair loss, or absence of hair. Baldness is usually most noticeable on the scalp, but can happen anywhere on the body where hair grows.
What happens after anaphase?
A. Metaphase
B. Prophase
C. Telophase
D. Go phase
Answer:C. Telophase
Explanation:
In cellular respiration, most ATP molecules are produced by _____. In cellular respiration, most ATP molecules are produced by _____. substrate-level phosphorylation photosynthesis photophosphorylation oxidative phosphorylation cellular respiration
In cellular respiration, most ATP molecules are produced by oxidative phosphorylation.
Cellular respiration is the process by which organisms combine oxygen and food molecules, direct the chemical energy of those substances to life-sustaining activities, and dispose of carbon dioxide and water as waste.
Cell respiration is the process that occurs in the mitochondria of living organisms (animals and plants), breaking down sugar in the presence of oxygen and releasing energy in the form of ATP. In this process, carbon dioxide and water are released as waste.
Oxidative phosphorylation is the process by which ATP synthesis is linked to electron transfer and associated oxygen consumption through the mitochondrial electron transport chain.
learn more about Cellular respiration here:https://brainly.com/question/2809259
#SPJ4
fossils are found only in__
1. sedimentary rocks
2. metamorphic rocks
3. intrusive igneous rocks
4. extrusive igneous rocks
1. sedimentary rocks
They can occasionally some fine-grained, low-grade metamorphic rocks but almost all are found in sedimentary rocks.
Select the correct answer from
each drop-down menu.
The Spanish Civil War is also known as
Soviet Union and Mexico supported the
because many countries indirectly participated in the war. Countries such as the soviet union and mexico supported the blank,
while countries such as Germany and Italy supported the blank.
The Spanish Civil War is also known as The Crusade (Spanish: La Cruzada)
Soviet Union and Mexico supported the Cold War.
Countries like the Soviet Union and Mexico supported the Allies,
while countries like Germany and Italy supported Nazism.
Who were the Allies of the Nazis?
The Axis countries (Germany, Italy and Japan) and the Allies (France, England, USA and, later, USSR) constituted the alliances formed in the Second War. World War II was a conflict of global proportions that took place between 1939 and 1945.
With this information, we can conclude that the Spanish Civil War resulted from a confrontation between fascist and communist nationalist forces, which began to vie for power in the country.
Learn more about World War II in brainly.com/question/1449762
#SPJ1
Do you think the SARS-COV-2 pandemic is a question that population ecology can help solve? Explain.
Yes, I consider population ecology may result very useful to understand the zoonosis of this pandemic disease.
What is population ecology?Population ecology is a major branch of ecology aimed at full understanding of how populations may change in a given environment.
This subdiscipline (population ecology ) also analyzes the manner in which populations may interact with their surrounding environment, including human populations.
In conclusion, population ecology may result useful to understand the zoonosis of diseases.
Learn more about population ecology here:
https://brainly.com/question/1437549
#SPJ1
The properties of filtrate in the glomerular capsule is normally very similar to that of blood plasma except for the lack of:
The properties of filtrate in the glomerular capsule are normally very similar to that of blood plasma except for the lack of Proteins.
Properties of filtrate in the glomerular capsuleThe kidneys filter 1100–1200 cc of blood every minute on average. Three layers of blood are filtered as a result of glomerular blood pressure. Bowman's capsule epithelium, glomerular blood vessel endothelium, and the basement membrane between these three layers.The filtration membrane is composed of these three entities.These membranes filter the blood so thoroughly that all but a small portion of the plasma's components enter the bowman's capsule's lumen. Additionally, both of them contain diverse electrolytes like sodium, potassium, chloride, and bicarbonate ions as well as glucose, creatinine, urea, and uric acid except for proteins. This procedure is hence termed ultrafiltration.
Therefore, "Proteins" is the right response.
To learn more about the Glomerulus refer to:
https://brainly.com/question/12993720
#SPJ4
u
Select the correct text in the passage.
Pick out the correct sentences that correctly characterize marine reptiles.
Reptiles are warm-blooded creatures; they can regulate their internal body heat. Since they drink seawater they have large kidneys to filter
excess salt. Their skin prevents salt from entering their bodies. They have an efficient breathing mechanism. All marine reptiles breathe
through their skin. They can control their buoyancy using their lungs. All species of sea snake are non-venomous.
Reset
Next
The correct sentences to correctly characterize marine reptiles are:
C. Since they drink seawater, they have large kidneys to filter excess salt.
D. Their skin prevents salt from entering their bodies.
F. They can control their buoyancy using their lungs.
What are reptiles?Reptile is a class of animals that has animals like crocodiles, snakes, lizards, etc. These are cold-blooded animals. They are found in both land and water.
They are marine reptiles so, their kidneys and skin are adapted to filter salt, and save them from excess salt. Buoyancy is used when the animal or human dives into the water. These reptiles have lungs to do buoyancy.
Thus, options C, D, and F are correct regarding the characters of reptiles.
The passage is added below:
Learn more about reptiles, here:
https://brainly.com/question/15147975
#SPJ1