Answers
Answer:
protons
Explanation:
The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number. Oxygen atoms have 8 protons.
Related Questions
Drag each item to indicate whether it exhibits fracture or cleavage.
Answers
Answer:
From left to right
Explanation:
Cleavage, cleavage, fracture
The first item exhibit a cleavage. The second item exhibit a cleavage. The third item exhibit a fracture.
In mineral science, Cleavage is the process by which a mineral breaks or splits through smooth planes with a pattern because the material is stratified in a layered pattern. It generally seems regular since it fractures along its plane of weakness.
A fracture happens when a mineral splits with fractures and does not produce a particular definite shape. It frequently emerges in an erratic and irregular pattern.
From the three picture given, the first and the second item exhibit cleavage, and the third item exhibit fracture.
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which of the following decribes the importance of the citric acid cycle as a central pathway of metabolism?
Answers
The statement that best describes the importance of the citric acid cycle as a central pathway of metabolism is: D. It allows recovery of energy from several metabolic fuels that are broken down to acetyl-CoA.
In the field of biology, the citric acid cycle can be described as an important metabolic reaction in which several molecules like proteins, fats, etc are converted into acetyl-CoA. Then, this acetyl-CoA is used in the electron transport chain to produce ATP from it.
Hence, the citric acid cycle is important in metabolism because it allows several metabolic fuels such as proteins, carbohydrates, and fats to be converted into a compound referred to as acetyl-CoA which serves as an important molecule to be converted into the main energy molecule i.e ATP. The reactions of the citric acid cycle take place inside the mitochondria.
Although a part of your question is missing, you might be referring to this question:
Which of the following describes the importance of the citric acid cycle as a central pathway of metabolism?
A. It allows recovery of energy from carbohydrates only.
B. It allows recovery of energy from fatty acids only.
C. It allows recovery of energy from amino acids only.
D. It allows recovery of energy from several metabolic fuels that are broken down to acetyl-CoA.
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2. A rose- combed rooster is mated with two rose-combed hens. Hen A produces 14 chicks, all rose-combed. Hen B produces 9 chicks, 7 of which are rose-combed and 2 single-combed. What are likely genotypes of the parent? Explain.
Answers
Answer:
Explanation:
Based on the given information, we can use Punnett squares to determine the genotypes of the parent birds.
Let's use "R" to represent the rose-combed allele and "r" to represent the single-combed allele.
From the problem statement, we know that:
The rooster is rose-combed, so it must have at least one copy of the R allele.
Hen A produces 14 chicks, all of which are rose-combed. This means that Hen A must be homozygous for the R allele (RR).
Hen B produces 9 chicks, 7 of which are rose-combed and 2 of which are single-combed. This means that Hen B must be heterozygous for the R allele (Rr).
Using this information, we can set up Punnett squares to show the possible genotypes of the offspring from each parent:
Rooster: R r
---- ----
Hen A: R R R R
Offspring: R R R R (all rose-combed)
Hen B: R r R r
Offspring: R R R R (rose-combed)
R r R r (rose-combed)
r R r R (single-combed)
r R r R (single-combed)
Based on the Punnett squares, we can see that the rooster must be heterozygous for the R allele (Rr), since both hens produce only rose-combed offspring. Hen A is homozygous for the R allele (RR), while Hen B is heterozygous (Rr). This means that the genotype of the rooster is Rr, and the genotypes of the hens are RR and Rr, respectively.
SCIENCE 8. True or False? In a cell, homeostasis occurs when food and oxygen enter
the cell, and when waste exits the cell. *.
Answers
Answer:
true
Explanation:
differentiate between transpiration, exaporation and evapotranspiration
Answers
Transpiration refers to the process of water loss through the stomata of plants, evaporation is the process of a liquid turning into a gas, while evapotranspiration is the combination of both transpiration and evaporation and refers to the total water loss from a surface.
What is Transpiration?Transpiration is the process by which water is lost from a plant through small pores called stomata. This water loss can occur through evaporation from the surface of the leaves or stems and serves to regulate the temperature of the plant and maintain water balance.
Transpiration also plays a crucial role in the movement of water and nutrients from the roots to the leaves. It is an important aspect of the water cycle and helps to redistribute water and minerals throughout the plant.
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Which of these could be a depletable energy resource 
A.forests
B.tidal energy
C.solar
Answers
Answer:
Well see I dont know this one but I can ask my parenents and hel you
Explanation:
Ima i in fourth grade i can we part to you later
Choose the true statement(s) about mutations. To be marked correct, you'll need to select all true statements, as there may be more than one correct answer.
A. Mutations can provide an evolutionary benefit.
B. Mutation leads to genetic and phenotypic variation within a species.
C. In humans, somatic cell mutations are not passed to offspring.
D. Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.
Answers
Answer
All four options ( A,B,C,D ) are true about mutations.
Explanation:
A- Mutation can provide an evolutionary benefits
As mutation helps in creating DNA sequence ,new allele(variant of gene) for a specific gene , thus mutations is known to be the first step of evolution.
B- Mutation leads to genetic and phenotypic variation within the species.
In mutation, genetic variation (difference between individual/population) takes place as new alleles are created ,random matings ,fertilization and during meiosis , recombination of homologous chromosomes. One of the type of mutation called gene mutation give rise to genetic variations.
Its an exceptional case of phenotypic variations ,as mostly there is no effect of mutation on phenotypic variation. Very few mutations lead to phenotype variation and in case mutation takes place in phenotype variation ,making the organism well suited to the environment, the a rapid change in the characterstics of the individual species is seen.
C- In humans, the somatic cell mutation are not passed in offsprings.
Somatic cells are present in all over the body except in the cells that give rise to gametes( ie. egg and sperm cells) and produces offsprings . Thus somatic cells are absent in gametic cells ,therefore mutation cannot be passed to human's offsprings or children.
D- Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.
Due to their fast growth ,bacteria evolve quickly and share genes with each other and even between the species ,also the mutation that are helpful spread faster in bacteria.
In humans, the silent mutation in human cells cause many genetic disorders like Laron dwarfism. About 99.8% genes are silent mutation.
Structure of Fruits
Answers
Answer:
A fruit consists of two main parts - the seeds and the pericarp or fruit wall. The pericarp consists of three layers - outer epicarp, middle mesocarp and inner endocarp. .
Nathan's parents let him choose his own bedtime and eat whatever he wants. What type of parenting style does this BEST represent?
O A.
neglectful
SOB. authoritative
O C. authoritarian
O D. permissive
Answers
Nathan's parents let him choose his own bedtime and eat whatever he wants and this type of parenting style represents : D. permissive.
What is permissive parenting?The nature of the parents' work is a more important determinant of children's development than a parent working outside the home.
Permissive parenting also called indulgent parenting. It is a style of child-rearing that has two key traits: being nurturing and warm and being not imposing limits .
Permissive parents do not control their children's behavior. So, children are less aware of the limits of acceptable behavior. They exhibit worse impulse control and have more behavioral problems. When they are facing stressful situations, they are likely to resort to using aggression.
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Question 2 of 10
You're a nurse in the emergency room of a hospital. Which of the following
patients should you prioritize first?
O A. Padma sprained her ankle.
B. Mary is having an asthma attack and cannot breathe.
C. Sonya was in a car accident and has a chipped tooth.
D. Ronald's back hurts after he fell off his bike.
SUBMIT
Answers
Answer:
Mary, who is having an asthma attack and cannot breathe, should be prioritized first as she is in immediate danger and requires urgent medical attention.
Explanation:
Marine biologists _____.
do not need to problem solve
observe organisms which live in water study the universe
research new medical products
Answers
Answer:
observe organisms which live in water
Explanation:
Marine biology is the scientific research of an organization that lives in fresh water. A marine biologist is by definition a person who studies or works with doors that live in fresh water.
Marine biologists are exploring a wide range of aquatic species, from microbial plankton to massive ones.
what does it mean when you dream about yourself dying?
Answers
Explanation:
Dreams of experiencing your own death usually means that big changes are ahead for you. You are moving on to new beginnings and leaving the past behind.
Answer:
it means your life is very long.
Explanation:
Sometimes you might not be able to see a new substance forming, so be on the lookout for evidence that a chemical change has occurred. A change in smell and color can indicate that a new substance has formed. For example, caramelized onions have a very different smell than raw onions. They have a darker color, too. Other physical properties about the onions change during caramelization, including their texture. The formation of bubbles can be evidence of a chemical change, but only if they indicate that a new gas is formed. If you heat a pot of water, the water will begin to boil. Those bubbles are not any new substance forming. They’re just the same water you started with changing state from liquid to gas.
Based on this passage, if you cannot see that a new substance has formed,
A
only a physical change could have occurred.
B
a chemical change might have occurred.
C
a change in state has always occurred.
D
no change could have occurred.
Answers
it is possible for a chemical change to occur even if there is no visible evidence of a new substance forming.
What visual signs of chemical alteration exist?A change in colour and the appearance of bubbles are two indications of a chemical shift. The five elements of chemical change are: colour change, precipitate or gas production, gas formation, odour change, and temperature change.
If there is no chemical change, may a physical change still happen?Physical changes can be brought about by physical actions like adjusting the temperature or pressure. You melted the ice, but nothing happened chemically. Water molecules are still molecules of water.
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A student filled two Petri dishes with a clear cornstarch gel, then marked the letter
Answers
air enters the nasal cavity where it is warmed, filtered and humidified the larynx contains the vocal folds necessary for sound production. the pharynx is found in the neck and upper protion of the thorax. the trachea is a region of the respiratory tract that is shared with the digestive system
Answers
False. The trachea is a separate passageway dedicated to the respiratory system. While it is located near the esophagus, it is not shared with the digestive system.
Where is the trachea located?The trachea is located in the neck and thorax, and is a part of the respiratory system. It is a tube-like structure that connects the larynx to the bronchi of the lungs.
The larynx, also known as the voice box, can be found in the neck at the very top of the trachea, just below the pharynx and above the thyroid gland.
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The complete question is:
air enters the nasal cavity where it is warmed, filtered and humidified the larynx contains the vocal folds necessary for sound production. the pharynx is found in the neck and upper portion of the thorax. the trachea is a region of the respiratory tract that is shared with the digestive system. True or False.
using the _____analysis information, penetration testers can emulate adversaries and attempt a wide range of known attack vectors in order to verify that the known methods of attack are all mitigated.
Answers
Using the Threat analysis information, penetration testers can emulate adversaries and attempt a wide range of known attack vectors in order to verify that the known methods of attack are all mitigated.
1. Threat: The first step in the process is to identify potential threats that could be used to attack the system. This includes researching any known vulnerabilities, such as security flaws, malicious code, and other malicious actors.
2. Vulnerability Scanning: After identifying potential threats, penetration testers can use vulnerability scanning tools to identify any known security weaknesses. These scans can be used to detect common vulnerabilities, such as SQL injections, cross-site scripting, buffer overflows, and other security flaws.
3. Exploitation: Penetration testers can then attempt to exploit any identified vulnerabilities by attempting to gain unauthorized access to the system. This can include attempting to inject malicious code, performing brute-force attacks, or performing other attacks.
4. Post Exploitation Analysis: After exploiting any vulnerabilities, penetration testers can then analyze the results of their attack. This includes examining system logs, analyzing traffic, and examining any data that has been compromised.
5. Remediation: Finally, penetration testers can suggest remediation steps to mitigate the identified threats. This can include patching vulnerable systems, deploying additional security measures, and implementing other security best practices.
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explain the importance of all 3 biomolecules in general and for making ATP.
Answers
The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins
The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another which play a role in the development of organisms .
There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .
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Scientific study of the population cycles of the snowshoe hare and its predator, the lynx, has revealed that ________. Question 9 options: A) predation is the dominant factor affecting prey population cycling B) hares and lynx are so mutually dependent that each species cannot survive without the other C) the hare population is r-selected and the lynx population is K-selected D) both hare and lynx population sizes are affected mainly by abiotic factors
Answers
Answer:
A) predation is the dominant factor affecting prey population cycling
Explanation:
Predation is a type of interaction between species where one species called ‘predator’ uses another species, the ‘prey’, as a source of food. Within an ecosystem, the number of predators and prey may vary over time in cycles of time (in these cases, the population cycles of both species are closely linked). In consequence, predation is a density-dependent factor. In the case of the snowshoe hare and its predator, the lynx, when the number of predators is too high, the number of prey drastically decreases. Subsequently, this leads to the decrease of predators that leave their home range (they don’t have enough food to survive), thereby the snowshoe hare population increases again until the peak of the population cycle (carrying capacity), and so successively.
I’ll give points + brainalist (:
Answers
How do petals help with fertilization
Answers
informational text about the food chain
Answers
Answer:
what food chain ?
Explanation:
Male organisms are more susceptible to genetic disorders linked to the sex chromosome then female because they have _______, and therefore, the law of dominance doesn’t apply
Answers
Because male creatures contain X and Y chromosomes, which are sex chromosomes, the law for dominance does not apply to them and they more susceptible to sex-related genetic diseases than female species.
Why are sex-related features more prevalent in males than females?Males only inherited one X chromosome, hence they only have one chance to receive the "good" allele because females contain two versions of an x-linked allele whereas males only carry one. Males are more likely than females to exhibit X-linked characteristics.
Why are sex-related genetic diseases exclusively inherited by women?That's because X-linked diseases are typically brought on by a lack of functional copies of a gene found on the X chromosome. Males are born with just one X chromosome. Hence, they just require one malfunctioning .
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why animal like frog snakes lizard etc are less visible in winter season.
Answers
Animals like frogs, snakes, lizards, and other ectothermic (cold-blooded) animals are less visible in the winter season because their metabolism and activity level decrease in response to the cold temperatures.
During winter, these animals become less active to conserve energy, and they may enter a state of dormancy or hibernation. For example, some frogs hibernate by burying themselves in mud at the bottom of ponds or streams, while snakes and lizards may find shelter in burrows or crevices to stay warm.
Furthermore, the lack of food availability during winter can also contribute to the reduced visibility of these animals. Many insects and other invertebrates that these animals feed on are less abundant during the colder months, making it harder for them to find food.
Finally, the shorter days and longer nights during the winter season can also affect the behavior of these animals. The reduced daylight can cause a decrease in activity, and the darkness can make it harder for them to find food and navigate their environment.
In conclusion, the reduced visibility of animals like frogs, snakes, and lizards during the winter season is due to a combination of factors, including decreased activity levels, dormancy or hibernation, lack of food availability, and changes in daylight and darkness.
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What is the difference between a vertebrate and invertebrate?
Answers
a vertebrate is an organism with a spinal cord, an invertebrate has no spinal cord
Answer:Vertebrates are animals that have a backbone inside their body. The major groups include fish, amphibians, reptiles, birds and mammals. Invertebrates don't have a backbone. They either have a soft body, like worms and jellyfish, or a hard outer casing covering their body, like spiders and crabs.
Explanation:
Very fast brainlist
One person consumes the equivalent of five cows per year. Five cows consume a total of 39 million Calories of vegetation per year. One person only needs one million Calories a year to survive. Which statement best describes the efficiency of energy transfer in this scenario?
It is very efficient because the person can eat less.
It is inefficient because less energy is needed at the top.
It is very efficient because most energy is made by producers
Only a portion of energy from vegetation makes it to a person.
Answers
Answer:
It is very efficient because the person can eat less.
Explanation:
the common knowledge answer
Only a portion of energy from vegetation makes it to a person. The correct option is D.
What is energy efficiency?The definition of energy efficiency is the use of less energy to carry out a task or achieve a goal.
Ecological efficiencies at each trophic link determine the food chain efficiency (FCE), which is calculated as the percentage of energy fixed by primary producers that is transmitted to the top trophic level.
The energy supply accessible to trophic level N+1 divided by the energy used by trophic level N is the definition of ecological efficiency.
Only a percentage of the energy from vegetation makes it to a person, which best sums up the efficiency of energy transmission in this situation.
Thus, the correct option is D.
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How are the lysogentic and lytic cycles different?
Answers
The lysogenic cycle involves the spread of viral DNA when prokaryotic microorganisms reproduce and the lytic cycle destroys the host cell immediately.
What is the lytic cycle?The lytic cycle is a type of reproductive cycle in viruses that involve the destruction of the host cells.
Conversely, the lysogenic cycle occurs only in prokaryotic cells and it does not involve the destruction of these cells.
In conclusion, the lysogenic cycle uses prokaryotic reproduction and the lytic cycle destroys the host cell.
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Help Please….screenshot attached
Answers
The central nervous system is impacted by the tetanus neurotoxin produced by Clostridia tetani by attaching to and preventing the release of neurotransmitters that prevent muscle contraction.
What causes lock-jaw?The release of neurotransmitters causes unopposed muscular contractions or spasms, which causes the typical lockjaw symptoms. Reflexes may be impacted by lockjaw, so be aware of that. Reflexes involve the activation of particular muscle groups in response to a stimulus and are controlled by the spinal cord.
The reflex, however, may be inhibited or altered if the muscles involved in the reflex reaction are harmed by the toxin and are in a condition of prolonged contraction. Furthermore, lockjaw sufferers may find it challenging to elicit or detect responses due to the severity of their muscle spasms.
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What causes the earths cycle of the day and night? Select the words from the drop down menus to correctly complete the explanation.
Answers
Answer: The cycle of day and night on Earth is caused by the rotation of the Earth on its axis. As the Earth rotates, different parts of the planet are exposed to the Sun's light, causing daylight in some areas and darkness in others.
What is the exception of chromosome movements
Answers
Answer :A chromosome is a long DNA molecule with part or all of the genetic material of an organism. Most eukaryotic chromosomes include packaging proteins called histones which, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation.
Explanation:
Which if the following is not a source of genetic variation in meiosis?
A. polar body formation
B. law of independent assortment
C. the random lining up of chromosomes on the metaphase plate crossing over
D. tetrad formation
Answers
Polar body formation is not a source of genetic variation in meiosis
What is meiosis and what does it do?
Meiosis is a type of cell division that results in the production of four gamete cells and a 50% reduction in the amount of chromosomes in the parent cell. To create egg and sperm cells for sexual reproduction, this process is necessary.
Homologous chromosomes (one from each parent) join along their lengths during meiosis. Chiasma points are where the chromosomes meet. The chromosomes split and reassemble at each chiasma, exchanging some of their genes. Genetic diversity is produced by this recombination. Through two key processes—independent selection of gametes and chromosomal rearrangement and recombination during crossing over—meiosis enhances genetic variation.
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