Answer:
B
Explanation:
part of most chordate embryos that develops into a spinal column (vertebrae).
It is also the development of the backbone of an embryo,that later becomes a spine
Gray wolves and killer whales share which of the following taxa?
O Delphinidae, Carnivora, Animalia
Animalia, Chordata, Mammalia
O Caidae, Cetacea, Mammalia
Animalia, Mammalia, Canidae
Answer:
B. Animalia, Chordata, Mammalia
Explanation:
Web
Cred not mine
Answer: The correct answer is Animalia, Chordata, Mammalia
Explanation: This answer has been confirmed correct.
What is the relationship between the carbon, hydrogen, and oxygen atoms from sugar molecules, formed in or ingested by an organism?
Answer:
(CH₂O)ₙ ↔ 1:2:1
Explanation:
The 6-carbon monosaccharide/sugar molecule (called hexose) formed in or ingested by an organism is called glucose. Glucose is a carbohydrate; made up of only carbon (C), Hydrogen (H) and Oxygen (O) in the ratio (relationship) 1:2:1 with the molecular formula C₆H₁₂O₆ and hence can be written as (CH₂O)ₙ where n=3.
Other six carbon sugars having the same molecular formula but different structural formulars (isomers) and aren't formed by an organism are fructose and galactose
Answer:
Where they correct?
Explanation:
Cell membranes made up of phospholipid bilayers are typically 8.40 nm in thickness and they are semi-permeable, allowing ions and charged proteins to transgress the cell boundary. Equal, opposite charge densities build up on either side of the cell membrane. This charge gradient forms an electrical barrier, preventing charged items and ions passing through the cell. For the purposes of this example, the cell membrane can be moded as a parallel plate capacitor. Owing to the presence of proteins and organic material embedded within the phospholipid bilayer, the membrane has a dielectric constant of 8.90. Determine the capacitance per unit area of this cell wall. Tolerance =5%, units mark =15%
The capacitance per unit area of this cell wall is 9.16 × 10⁻³ F/m² times the area (A) of the cell wall.
In order to determine the capacitance per unit area of the cell wall, we can use the formula for the capacitance of a parallel plate capacitor:
C = ε₀ * εᵣ * A / d
Where:
C is the capacitance,
ε₀ is the permittivity of free space (approximately 8.854 × 10⁻¹² F/m),
εᵣ is the relative permittivity or dielectric constant of the cell membrane (given as 8.90),
A is the area of the cell wall, and
d is the thickness of the cell membrane.
Given:
ε₀ = 8.854 × 10⁻¹² F/m,
εᵣ = 8.90,
d = 8.40 nm.
First, we need to convert the thickness of the cell membrane from nanometers to meters. Since 1 nm = 1 × 10⁻⁹ m, the thickness in meters is:
d = 8.40 nm * (1 × 10⁻⁹ m / 1 nm) = 8.40 × 10⁻⁹ m.
Now we can calculate the capacitance per unit area:
C = (8.854 × 10⁻¹² F/m) * (8.90) * A / (8.40 × 10⁻⁹ m)
Since we are asked to provide the answer in units mark = 15%, we need to calculate the value within 15% tolerance.
To do this, we can use the following formula to find the range of acceptable values:
Range = (tolerance / 100) * Value
Range = (0.15) * C
To find the minimum and maximum values:
Minimum Value = C - Range
Maximum Value = C + Range
Now let us calculate the capacitance per unit area:
C = (8.854 × 10⁻¹² F/m) * (8.90) * A / (8.40 × 10⁻⁹ m)
or, C ≈ (9.16 × 10⁻³ F/m²) * A
Therefore, the capacitance per unit area of the cell wall is approximately (9.16 × 10⁻³ F/m²) times the area (A) of the cell wall.
Please note that the calculations provided here assume ideal conditions and may not account for all real-world factors.
Learn more about cell wall: https://brainly.com/question/16068825
#SPJ11
“CRISPR” (pronounced “crisper”) stands for Clustered Regularly Interspaced Short Palindromic Repeats. These repeats can be used to locate specific areas of genetic code so changes can be made. The technology can be used for editing genes of different types of organisms. Why is this possible?
CRISPR technology is possible because of the unique nature of the CRISPR-Cas system found in bacteria and archaea.
What is genetic?Genetics refers to the study of genes, heredity, and variation in living organisms. It involves the study of how traits are passed down from one generation to the next, and how they are expressed in individuals. Genes are the units of heredity that are responsible for determining an individual's physical and biological characteristics. They are made up of DNA, the molecule that carries the genetic information in living organisms. Genetic information can be used to study evolutionary relationships between organisms, and to develop treatments and cures for genetic diseases.
Here,
This system uses RNA molecules to target specific sequences of DNA and can cut the DNA at those locations. Scientists have been able to harness this system to create a tool that can be used to make precise edits to the DNA of various organisms. The CRISPR-Cas system works by creating a specific RNA molecule that can recognize a target DNA sequence. The RNA molecule is then paired with an enzyme that can cut the DNA at that location.
By changing the RNA sequence, scientists can change the target location of the enzyme, allowing for precise editing of the DNA. This technology has many potential applications in research, medicine, and biotechnology.
To know more about genetics,
https://brainly.com/question/19138651
#SPJ1
A shortage of cholesterol in the body could interfere with the formation of:
A. plasma (cell) membranes
B. nucleic acids
C. proteins
D. muscles
Answer:
B. nucleic acids
Explanation:
If you are going to infer the topic, what does that mean?…..
Answer:infer implies arriving at a conclusion by reasoning from evidence; if the evidence is slight, the term comes close to surmise.
Explanation:infer
Is the yellow spotted lizard poisonous?
Answer:
Yes, it is poisonous.
Explanation:
It contains venom which is poisonous.
The yellow spotted lizard is poisonous and can be extremely dangerous if it bites you, despite the fact that it is rather unusual to find one in the wild.
What is yellow spotted lizard?Being handled by a yellow-spotted lizard could result in a bite. The lizards' little, sharp teeth may cause a few drops of blood to be drawn, but due of their size, the bites are unlikely to be serious.The symptoms of being bitten would be unpleasant and gradual. Death could result if immediate medical care (from a doctor) is not provided. The sole treatment for the venom of yellow-spotted lizards is onion juice; it is believed that they are allergic to it.For more information on yellow spotted lizard kindly visit to
https://brainly.com/question/29528734
#SPJ4
The results of one experiment carried out by a research team would be considered valid if
A) All the members of the research team came to the same conclusion
B) The experiment had more than 1 variable
C) The experiment was repeated and same results were obtained each time
D) The experiment had no control set up
Answer:
c
Explanation: hope it helped
Question 14
The energy that drives the water cycle originates from:
a
The sun
b
The global wind system
c
Surface and ground water
d
Thermohaline circulationL
Answer:
the sun
Explanation:
the sun is energy that controls all weather activity. (pretty much)
What are the characteristics of carbon bonds? Check all that apply.
Answer:
A Carbon atom can bond with four other atoms and is like the four hole wheel,while an oxygen atom, which can bond only to two, is like the two hole wheel. Carbon's ability to form bonds with four other atoms goes back to it's number and configuration of electrons.
Hope this helps
Explanation:
Answer:
Coovalent bonding , slow reaction rates , high activatian energies to begin reactions, insouble in water hope this helps.
Explanation:
Explain how the liver is involved in regulating the composition of the blood and in protecting the body against toxic substances
Answer:
The liver regulates most chemical levels in the blood and excretes a product called bile. This helps carry away waste products from the liver. All the blood leaving the stomach and intestines passes through the liver.
Which term describes a single female arctic The group of polar bears that live along the eastern coast of Russia makes upfox?
The term that describes a single female arctic fox is a vixen.
A vixen is a female fox, including the arctic fox, that is not pregnant or nursing young. It belongs to the Canidae family and is found in the tundra and other Arctic regions of the Northern Hemisphere.The Arctic fox is a small, compact, and sturdy mammal that can survive in some of the world's harshest environments.
The population of Arctic foxes that lives along the eastern coast of Russia is not referred to as a group of polar bears. It is known as a population, a community, or a family.A population is a group of animals of the same species that live in the same area and interact with one another.
A family of arctic foxes is made up of a male and female adult and their offspring. They live together in underground dens that are used for shelter and protection.Arctic foxes are considered a keystone species in the Arctic region because they play a crucial role in the ecosystem. They feed on small animals like lemmings and voles, which helps to regulate their populations. In addition, they are a food source for larger predators like wolves and polar bears, which helps to maintain balance in the food web.
For more such questions on arctic fox, visit:
https://brainly.com/question/27754416
#SPJ8
Maintaining the planet's biodiversity is important for all of the following reasons EXCEPT:
A. generating the natural water supply.
B. recycling important nutrients.
C. regulating the chemistry of the planet's atmosphere.
D. pollinating the crops humans depend on for food.
E. keeping public parks clean.
Maintaining the planet's biodiversity is important for all of the following reasons except keeping public parks clean. The correct answer is option E.
Biodiversity refers to the variety of living things found on Earth, biological diversity is also referred to as biodiversity. Biodiversity includes the many ecosystems, such as deserts, rainforests, and coral reefs, and the many different plant and animal species that live within them. Biodiversity has a number of advantages, some of which are mentioned below: Regulating the planet's atmosphere chemistry, recycling essential nutrients, and pollination of crops on which humans rely for sustenance.
Learn more about biodiversity: https://brainly.com/question/26110061
#SPJ11
How are genes, mutations, adaptations, and natural selection related
in the process of evolution?
Answer: Genes, mutations, adaptations, and natural selection are all related to the process of evolution, which is the process by which populations of organisms change over time in response to their environment.
Genes are the units of heredity that carry the instructions for an organism's inherited traits. They are made up of DNA, which is a long molecule that contains the genetic code for an organism. Mutations are changes that occur in an organism's DNA, and they can be caused by various factors such as errors during DNA replication, exposure to radiation or other environmental factors, or the action of certain chemicals.
Adaptations are traits that help an organism survive and reproduce in its environment. They can be physical, such as a bird's beak or a plant's leaves, or behavioral, such as a lion's hunting techniques. Adaptations can be the result of mutations that occur in an organism's genes.
Natural selection is the process by which certain traits that are advantageous for an organism's survival and reproduction are passed down to future generations. This happens because organisms with advantageous traits are more likely to survive and reproduce, while those with less advantageous traits are less likely to do so. Over time, this process can lead to the evolution of new species and the extinction of others.
In summary, genes, mutations, adaptations, and natural selection are all related in the process of evolution. Mutations can lead to new adaptations, and natural selection favors the survival and reproduction of organisms with advantageous adaptations. This process can lead to the evolution of new species over time.
The strong attraction between water molecules is called—-
A-cohesion
B-Magnetism
C-Electricity
D-Polarity
Answer:
Cohesion
Explanation:
LO
After heavy exercise, due to the accumulation of which substance we get muscle cramps?
a) Malaic acid
(b) Fumaric acid
(0) Lipoic acid
(d) Lactic acid
Answer:
B fumaric acid
Explanation:
Thats my answer hope it helps
The capillary network associated with the hypothalamus is the ______ capillary plexus. Multiple choice question.
the capillary network associated with the hypothalamus is the hypothalamic capillary plexus. The hypothalamus is a section of the brain that controls hormones, regulates body temperature, and manages the body's balance of fluids and electrolytes.
The hypothalamic capillary plexus, also known as the hypophyseal portal system, is a small, dense network of blood vessels located within the hypothalamus that connects to the anterior pituitary gland. It serves as a portal for the exchange of chemicals between the hypothalamus and the anterior pituitary gland. In reality, the hypothalamic capillary plexus comprises a series of small capillaries that are connected by small channels, which ultimately allow chemicals to pass through the blood-brain barrier and enter the portal system. The hypothalamus is a section of the brain that regulates a variety of essential bodily functions, including hormone regulation, body temperature, and fluid and electrolyte balance.
The hypothalamic capillary plexus is a network of blood vessels that is located within the hypothalamus and is responsible for transporting chemicals between the hypothalamus and the anterior pituitary gland.The hypothalamic capillary plexus, also known as the hypophyseal portal system, is a small, dense network of blood vessels that connects the hypothalamus to the anterior pituitary gland. This plexus comprises a series of small capillaries that are connected by small channels, which ultimately allow chemicals to pass through the blood-brain barrier and enter the portal system.Once chemicals have passed through the blood-brain barrier and into the hypothalamic capillary plexus, they are then transported to the anterior pituitary gland, where they influence the release of hormones into the bloodstream.
To know more about hypothalamus visit:
https://brainly.com/question/13052050
#SPJ11
bioinformatic algorithms that detect ________ would be most likely to identify possible genes in most eukaryotic genomic dna sequences.
Bioinformatic algorithms that detect open reading frames (ORFs) would be most likely to identify possible genes in most eukaryotic genomic DNA sequences.
An open reading frame refers to a DNA sequence that has the potential to encode a protein.
ORFs typically begin with a start codon (ATG) and end with a stop codon (TAA, TAG, or TGA) and have a minimum length of around 100 nucleotides.
ORF detection algorithms are a widely used approach in gene prediction because they allow for a relatively simple way to identify coding sequences. While not all ORFs necessarily encode functional proteins, ORF detection is still a useful tool for finding potential gene candidates.
Once identified, the ORFs can be further analyzed for features such as homology to known genes, presence of promoter and enhancer elements, and transcription start sites to help determine if they are indeed functional genes.
ORF detection algorithms have been used successfully to identify genes in a wide range of eukaryotic organisms, including humans, mice, yeast, and plants.
However, it is important to note that no algorithm is perfect, and false positives and false negatives can occur.
As a result, it is often necessary to combine ORF detection with other gene prediction methods, such as homology-based searches or transcriptome analysis, to increase the accuracy of gene identification.
Know more about open reading frames here :
brainly.com/question/14150975
#SPJ11
The edrophonium test is used to diagnose Dupuytren's contracture. Group of answer choices True False
The edrophonium test is not used to diagnose Dupuytren's contracture. The statement is false. Dupuytren's contracture is a hand deformity in which one or more fingers are permanently curled.
It typically affects the ring finger and pinky finger. The condition results from the formation of abnormal tissue beneath the skin of the palm, causing thick cords to develop that can pull the fingers into a bent position over time. The cause of Dupuytren's contracture is not clear, but it is more common in men over 40 and individuals of Northern European descent. The edrophonium test is a diagnostic test used to determine if a person has myasthenia gravis, a neuromuscular disorder that causes muscle weakness and fatigue. During the test, a small amount of edrophonium chloride is injected into the patient's vein, which temporarily blocks the enzyme that breaks down acetylcholine, a neurotransmitter that helps muscles contract. If the patient's muscle strength improves after the injection, it is likely that they have myasthenia gravis.
The edrophonium test is not used to diagnose Dupuytren's contracture. The condition is typically diagnosed based on a physical exam by a healthcare provider. The healthcare provider will examine the hand for signs of thickening or lumps in the palm, and check for finger contracture. Imaging tests such as X-rays, MRI, or ultrasound may also be ordered to evaluate the severity of the condition. Treatment options for Dupuytren's contracture may include medication, physical therapy, or surgery depending on the severity of the condition.
To know more about edrophonium test click here:
https://brainly.com/question/11996590
#SPJ11
Natural processes such as speciation and gradualism provide the genetic basis for
a. evolution
C. biogenesis
b. spontaneous generation
d. sexual reproduction
Answer:
A. Evolution
Explanation:
Natural processes like speciation create variation in species, making them have biodiversity and a diverse gene pool.
Gradualism also allows for species to change gradually over time.
Both of these processes allow for evolution to occur, as speciation can create more favorable traits that will be passed down with the process of gradualism.
So, the correct answer is A, evolution.
Natural processes such as speciation and gradualism provide the genetic basis for evolution. Thus, option A is correct.
What is speciation?Natural processes like speciation create variation in species, making them have biodiversity and a diverse gene pool. Gradualism also allows for species to change gradually over time.
Both of these processes allow for evolution to occur, as speciation can create more favorable traits that will be passed down with the process of gradualism.Traits may be defined as the appearance or manifestation of a character. In genetics, traits are also known as Phenotypes.
Natural selection always carries their successful or most favorable traits into the next generation and eliminates the unsuccessful or least favorable traits. Or in other words, natural selection states the occurrence of the most favorable variations.
Therefore, Natural processes such as speciation and gradualism provide the genetic basis for evolution. Thus, option A is correct.
Learn more about evolution on:
https://brainly.com/question/13492988
#SPJ2
Which of the following is a possible base pair?
АТ
GA
ст
АВ
WILL MARK BRAINLIEST
In addition to having a high mutation rate, HIV is also particularly difficult to cure because it infects and disables a person’s helper T cells. How does this impact a person’s immune response?
A. It creates an overactive immune response
B. It limits the ability to launch a coordinated immune response to fight infection
C. The immune system can recognize bacterial pathogens but is no longer be able to recognize viral pathogens
D. It strengthens a person’s immune system making it resistant to antiviral medications
The impact of HIV on a person's immune response is that it limits their ability to launch a coordinated immune response to fight infection.
HIV targets and infects helper T cells, which play a crucial role in coordinating the immune response. By disabling these cells, HIV impairs the immune system's ability to mount an effective defense against infections. Helper T cells are responsible for activating other immune cells, such as B cells and cytotoxic T cells, to recognize and destroy pathogens.
Without functional helper T cells, the immune response becomes compromised. The body's ability to recognize and respond to viral pathogens, including HIV itself, is significantly weakened. This allows the virus to replicate and spread unchecked, leading to persistent infection and progressive immune system decline.
The impaired immune response also affects the body's ability to combat other infections. Without proper coordination, the immune system may not effectively recognize and target bacterial or other viral pathogens, leading to increased susceptibility to opportunistic infections.
Overall, HIV's targeting and disabling of helper T cells significantly impairs the immune response, limiting its ability to coordinate an effective defense against infections.
learn more about HIV here:
https://brainly.com/question/30526896
#SPJ11
primitive functions, such as blood pressure, heart rate, body temperature, metabolism, and respiratory airflow, are regulated by
Primitive functions such as blood pressure, heart rate, body temperature, metabolism, and respiratory airflow are regulated by the autonomic nervous system and various hormonal signals.
Primitive functions in the body, such as blood pressure, heart rate, body temperature, metabolism, and respiratory airflow, are controlled and regulated by complex physiological mechanisms involving the autonomic nervous system and hormonal signaling.
1. Autonomic Nervous System (ANS):
The ANS is responsible for the involuntary control of these primitive functions. It consists of two branches: the sympathetic nervous system and the parasympathetic nervous system. The sympathetic branch generally prepares the body for action, increasing heart rate, blood pressure, and respiratory airflow, while the parasympathetic branch promotes relaxation and restores homeostasis.
2. Hormonal Signaling:
Hormones, chemical messengers secreted by various glands, also play a crucial role in regulating these functions. For example, the thyroid gland releases hormones that influence metabolism and body temperature, while the adrenal glands produce hormones like adrenaline that affect heart rate and blood pressure.
The regulation of these primitive functions involves intricate feedback loops and interactions between the autonomic nervous system and hormonal signals. These systems work together to maintain homeostasis, ensuring that vital physiological processes operate within optimal ranges for the body's overall function and well-being.
To know more about Autonomic Nervous System refer here:
https://brainly.com/question/32271937#
#SPJ11
Which of the following is a qualitative observation about grasshoppers that a science class could have made on their nature walk?
a.The grasshoppers will live longest in container filled with plants.
b.The grasshoppers are green with long back legs and antennae.
c.The grasshoppers will probably eat more grass than tree leaves.
d.The grasshoppers all hatched from eggs laid the year before.
Answer:
B
Explanation:
Qualitative means appearance wise, so B is correct because it is describing the appearance and observable features of the grasshoppers.
Which of the following is not an example of mechanical control of nonnative species?
a.
pulling
b.
inspections
c.
net barriers
d.
mowing
Answer:
it's A
Explanation:
Answer:
A. PULLING
Explanation:
Edg 2020
What is the name of the process by which an electric impulse moves through a nerve cell?
Explanation:
Action Potential.
An action potential, also called a nerve impulse, is an electrical charge that travels along the membrane of a neuron. It can be generated when a neuron's membrane potential is changed by chemical signals from a nearby cell.
Photosynthesis and cellular respiration both involve the Jews and release of gases was semi-correct identifies the role of gases in the two process?
Answer:
Photosynthesis and cellular respiration both are opposite to each other.
Explanation:
Photosynthesis and cellular respiration both are opposite to each other because the reactants of photosynthesis are the products of respiration whereas the reactant of respiration are the products of photosynthesis. In photosynthesis, carbondioxide gas react with water forming oxygen and glucose while on the other hand, in respiration, glucose is broken down with the help of oxygen produces carbondioxide gas, water and energy in the form of ATP.
sustaninability issues that come from electricity
Fundamentally, sustainability is about how people interact, how they affect one another and the environment, and how they deal with social and environmental problems. Although generally regarded as the third pillar of sustainability, others only view economics as a type of social issue.
The environment can be impacted by nearly every component of the power system, and the extent of these affects will vary depending on where and how the electricity is produced. The following are examples of generic environmental effects: emissions, particularly when a fuel is consumed, of greenhouse gas emissions and other air pollutants. Use of water resources for cooling, steam production, and other purposes. Thermal pollution is one type of pollution that is released into waterways (water that is hotter than the original temperature of the water body). Solid waste generation, which may also include hazardous garbage. Use of land for the development of power plants, transmission lines, and distribution networks. Effects of the mentioned consequences on air, water, waste, and land on plants, animals, and ecosystems. Some of these external factors may also have an impact on people's health, especially if they expose individuals to toxins in the air, water, or soil. The consequences of our growing and inefficient resource consumption include climate change, biodiversity loss, pollution, ill health, and poverty. These problems are connected, and they frequently make one another worse. The environmental and social challenge is massive in scope.
Learn more about Sustainability
https://brainly.com/question/13353436
#SPJ9
why do you suppose that the influenza virus protein that binds the virus to an infected cell is called hemagglutinin? hemagglutination is the clumping together of red blood cells. match the words in the left column to the appropriate blanks in the sentences on the right.
The protein's capacity to in vitro "agglutinate" red blood cells (erythrocytes) gave rise to the term "hemagglutinin."
A significant glycoprotein, the influenza virus's hemagglutinin (HA), is responsible for attaching to cell surface receptors and mediating membrane fusion, which releases the viral DNA into the cytoplasm in the early stages of virus infection.
The influenza virus is one of many enclosed viruses. Hemagglutinin, the main spike protein, attaches glycoprotein and glycolipid sialic acid residues with dissociation values in the millimolar range.
The influenza virus, which is recognised by the viral glycoprotein hemagglutinin, can bind to sialic acids (SAs) of cell surface glycoproteins and glycolipids. The terminal end of HA contains the location where the cellular receptors are attached.
To know more about erythrocytes go through:-
https://brainly.com/question/12529813
#SPJ4
Which of the following is a trace gas?
O nitrogen
O ozone
O oxygen
O hydrogen
Help please ASAP
Answer:
O hydrogen
Explanation:
hope it helps, please mark as brainliest please
Answer:
ozone
Explanation:
Out of the 1% of trace gases it makes up .01% of them.