Answer:
Correct order is
a) Receptors in her toe receive stimuli.
b) The sensory neuron generates an impulse.
c) Inter neurons relay the impulse to motor neurons in the spinal cord.
d) Motor neurons signal the leg muscles.
e) She immediately moves her foot.
Explanation:
Foot of Lucia contains stimuli receptors. As Lucia steps on the nail, the receptors in the toe receives the stimuli and hence her sensory neurons becomes active and they generate an impulse. These impulses are transmitted from sensory neurons via inter neurons to the brain. Brain processes the information and sends the message via inter neurons to the motor neurons. Motor neurons then signals the leg muscles and then she immediately removes her leg away from the pin.
Hence correct order is
a) Receptors in her toe receive stimuli.
b) The sensory neuron generates an impulse.
c) Inter neurons relay the impulse to motor neurons in the spinal cord.
d) Motor neurons signal the leg muscles.
e) She immediately moves her foot.
Final answer:
The events in the nervous system when Lucia steps on a nail form a reflex arc, starting with pain receptors and following through sensory neurons, interneurons in the spinal cord, motor neurons, and finally resulting in muscle contraction and movement.
Explanation:
The student's question pertains to the sequence of events that occur in the nervous system when Lucia steps on a nail. To answer this question, we will arrange the events in chronological order as they would happen within a reflex arc.
Receptors in her toe receive stimuli.
The sensory neuron generates an impulse.
Interneurons relay the impulse to motor neurons in the spinal cord.
Motor neurons signal the leg muscles.
She immediately moves her foot.
The sequence starts with the activation of pain receptors (nociceptors) when the nail is stepped on. This stimulus is then conveyed through sensory neurons to the spinal cord, where it is processed by interneurons.
The interneurons quickly transmit the impulse to motor neurons, which signal the leg muscles to contract, resulting in the immediate withdrawal of the foot. This entire process forms a reflex arc, allowing for a rapid response without the need for brain involvement.
Data courtesy of World Bank 2004
According to the chart above, sub-Saharan Africa has the highest number of teen mothers. Which of the following
statements best explains why younger motherhood is more common in African countries?
A Women are less likely to experience poverty in developing African countries.
B. Women are more likely to have a high socioeconomic status in developing African countries.
Women are more likely to increase their socioeconomic status if they marry early in developing
African countries
D. Women have fewer educational and economic opportunities in developing African countries
Please select the best answer from the choices provided
О А
B
о с
OD
Mark this and return
Save and Exit
Submit
Answer:
Women have fewer educational and economic opportunities in developing African countries.
Explanation:
A pharmaceutical company is testing a new drug that they claim allows dogs to repel
flea infestation. They give 100 dogs the medication and another 100 dogs a sugar
pill.
Which of the following is true of this experiment?
The sample size is too low.
The sugar pill would be a placebo.
The independent variable is the number of fleas on dogs.
The dogs with the placebo would be the experimental group.
Answer:
The sugar pill is called a placebo.
Explanation:
The placebo), is a harmless sugar pill that would have no effect on any of dogs.
The "control" group is the group that had the actual medication. This is the group they will b checking to see if any fleas or how many fleas r on the control group to gauge the success or failure of the medication.
Option B is correct; the sugar pill is a placebo used as a control in this experiment. The independent variable is the administration of the medication, and the dependent variable is the number of fleas.
In this experiment, the correct answer is that the sugar pill would be a placebo, making option B true. The placebo is used as a control to compare against the group of dogs receiving the new drug to repel fleas. The experimental group receives the new drug, while the control group receives the placebo.
This helps to determine if the drug itself is effective by measuring any differences in flea infestation between the two groups. The independent variable in this experiment is the administration of the medication (new drug vs. placebo), and the dependent variable would be the number of fleas on the dogs. The group given the placebo forms the control group, not the experimental group
Many types of birds expend large amounts of energy to fly long distances in the spring. How can a trip like this be worthwhile to
the birds?
O
Select one:
O a Birds that migrate find an abundant supply of food and safer nesting areas
b. Bird migration is an instinct that birds retain from their ancient ancestors, it has little value for bird populations in today's
world
c. Birds must change food sources during the year to be able to balance their diets
d Birds expend little energy when they fly and they stop often to take breaks
O
Migratory birds take long journeys to find abundant food supplies and safer nesting sites, which are essential for their survival and reproductive success. Hence, option a is correct.
Bird migration is an evolved behavior that is crucial for the survival of bird populations as it is an adaptive response to changes in resource availability. During their migrations, birds travel to areas that offer better living conditions with respect to climate and food, which is vital for their breeding success and the survival of their offspring.
What are the different methods of food preservation?
Answer:oldest and modern methods of food preservations are:
Explanation: oldest
1.drying 2.refrigeration 3.fermentation
Modern
1.canning 2.pasteurization
3.freezing 4.addition of chemicals
Food preservation methods include canning, freezing, and drying amongst others. These methods are designed to slow down or halt the growth of microorganisms that cause spoilage. They often involve altering the temperature, water content, or chemical composition of food.
Explanation:There are several methods used in the preservation of food, designed to slow the spoilage, browning, or degradation of nutrients in food. These methods often involve altering the environment of the food, leading to a slowed growth of bacteria, fungi, and other microorganisms. One of the most common methods is canning, where food is heated inside sealed containers to kill microorganisms. The freezing of food is another method, where the temperature is lowered enough to slow or stop the growth of microorganisms. Drying is one more method, where the water is removed from food to prevent the growth of microorganisms. Other methods include smoking, pickling, jellying, and using preservatives and additives.
Learn more about Food Preservation here:https://brainly.com/question/35898811
#SPJ2
A species has homologous chromosomes. What does this say about the species?
A. It has alleles that control certain traits.
B. It has pairs of matching chromosomes.
C. It is a eukaryote and a haploid species.
D. It has DNA that is made up of genes.
Answer:
B. It has pairs of matching chromosomes.
Explanation:
Homologous chromosomes are specific chromosomal set where two chromosomes contain almost centromere position, same length, same sequence of genes and similar staining pattern.In simple words we can say that these are the chromosomes that match with each other and are found in pairs. All the diploid organisms like human beings contain homologous chromosomes (a set of two chromosomes where one is i inherited from father and other from mother)/. These chromosomes due to their similar alignment play an important role in reproduction of organisms. where one is inherited from each parent and joined in the daughter organism to bring the beautiful creature into existence.
Hope it help!
Answer:
B- It has a pair of matching chromosomes.
Explanation:
Compare and contrast types of group behavior and individual behavior
Group behavior is like being open to the others and having a nice time, individual behavior is like silent and thinking.
Comparitive: Group behavior can be loud and full of conversations while individual behavior is like no conversation and silent.
Contrast: Group and Individual behaviors are the opposite of eachother
Hope this helps!
>Starfox5454<
Which features do all new rocks formed near an oceanic ridge share? Check all that apply.
-pillow-shaped
-striped pattern
-provide evidence to seafloor spreading
-made from molten material
-iron oriented in same direction
Answer:
Options (1), (2), (3) and (4)
Explanation:
Mid oceanic ridge is the region along the spreading of the sea floor occurs. Along this ridge, the magma come out to the surface, and lava forms pillow shaped rocks such as pillow basalt. Basalt is the dominant rock type in the oceanic crust.
There occurs striped patterns that are oriented parallel mid oceanic ridge, and this strips depicts the magnetic field of the earth, and it keeps on changing on each eruption of this magma beneath the ocean long this ridge.
The mid oceanic ridge suggests the spreading of the sea floor and the rocks present at this ridge are younger than the rocks that are away from the ridge.
This rocks are comprised of the molten iron material that are present in the mantle and suggest the magnetic field of the earth during the time of eruptions.
Hence, the correct answers are options (1), (2), (3) and (4).
What stays consistent throughout the experiment?
Answer:
The control group stays consistent throughout an experiment.
Explanation:
In an experiment, the basic format is to have two different groups, the independent group and the control group. You apply whatever change to the independent group, but keep the control group the same.
Independent group - the group that receives treatment.
Control group - the group that receives no change and is used as a comparison to the independent group.
For example:
Q: Shaun is doing an experiment. He wants to test whether sugar water makes lima beans grow faster. What would be his control group and his independent group?
A: His control group would be the lima beans that are only given regular water. His independent group would be the lima beans that are only given the sugar water, because that is the element he is trying to test.
Hope this helps!
Pyruvic acid enters the ____ and is first converted into____.
A. Mitochondria; acetyl CoA
B. Karen’s cycle; acetyl CoA
Pyruvic acid enters the Karen's cycle and is first converted into acetyl CoA.
Karen's cycle
The Karen's cycle refers to the citric acid cycle which is a cycle that releases stored energy.
Pyruvic acid is transported into the mitochondria, where it is converted into acetyl CoA via the enzyme pyruvate dehydrogenase. This step precedes the Krebs cycle, where acetyl CoA is further broken down to generate energy.
Explanation:Pyruvic acid enters the mitochondria and is first converted into acetyl CoA. This process occurs in the mitochondrial matrix where the enzyme pyruvate dehydrogenase catalyzes the conversion of pyruvate into acetyl CoA, releasing a molecule of carbon dioxide and forming NADH from NAD+ in a reaction known as oxidative decarboxylation. After its formation, acetyl CoA then enters the Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, where it is metabolized to produce ATP, NADH, and FADH2.
The three-carbon pyruvate molecule generated during glycolysis moves from the cytoplasm into the mitochondrial matrix, where it is converted by the enzyme pyruvate dehydrogenase into a two-carbon acetyl Coenzyme A (acetyl CoA) molecule. This reaction is an oxidative decarboxylation reaction. It converts the three-carbon pyruvate into a two-carbon acetyl CoA molecule, releasing carbon dioxide and transferring two electrons that combine with NAD* to form NADH. Acetyl CoA enters the Krebs cycle by combining with a four-carbon molecule, oxaloacetate, to form the six-carbon molecule citrate, or citric acid, at the same time releasing the coenzyme A molecule.
What the hec I need helping
Answer:
The cell enters the interphase stage after completing the cell cycle. This stage is considered to be “resting” stage because the cell is at full maturity however, this accusation is incorrect. The cell enters the interphase stage instead and prepares to enter into mitosis.
Explanation:
interphase
DNA: TAC CGT TTT CTT ATT TAC ATA ACT CTG CGA ATG
mRNA: AUG GCA AAA GAA UAA
Answer:
rest of the mRNA sequence- AUG UAU UGC GAC GCT UAC
Explanation:
T becomes A
A becomes U
C becomes G
G becomes C
Hope this helps. Good luck ^-^
Answer:
Is this a question or?
Explanation:
Match the following. Match the items in the left Colin to the items in the right column.
1.Biomass
Organic material made from plants and animals
2.Hydropower
Use of water to generate electricity
3.Renewable
Able to be recycled or replenished in a short period of time
4.Turbine
Engine with large blades
100% correct ✅
Answer:
All that you have matched is correct. ☑✔✔✔
Explanation:
✌Hope it helps ❣
❤Follow me ❤
and mark my answer as brainliest ✌
Thinking futuristic to when you will have established your unique niche in the medical field, what traits do you possess that will give you the ability to adapt and thrive within your workplace environment
Answer:
There are several factors which are required for a better adaptability in a new workplace. As far as medical field is concerned, it demands alot of hardwork and resilience.
I have a very hardworking nature through which i try to create my worth in new place. This helps me in not getting afraid of difficult task and take them as a challenge to reach the next step. I come out of my comfort zone to not only fulfill my responsibilities but also help my workplace to bring best out of me through discussion and open mindedness. I have a lot of patience when it comes to dealing with some critical situations such as the procedures we have to perform by taking decisions in very little time when it is a matter of life and death for patient. I think that i am blessed with a sound mind and health through which i will be able to adapt in the job in great way.
Hope it helps!
Which process produces two genetically identical diploid cells?
Answer:
Meiosis II
Explanation:
the process is similar to mitosis, though its genetic results are different.
Answer:
The correct answer is - mitosis.
Explanation:
Mitosis is one of the processes of the life cycle. The mitosis is a cell division. That takes place in somatic cells of other cells of the body except for gonad cells.
Mitosis is the process involves the division of parent cell into two genetically same or identical cells with the exact same number of chromosomes. It produces diploid daughter cells that mean 2n.
Thus, the correct answer is - mitosis.
How have scientific advancements led to an increase in food safety? a. improved preservation techniques b. improved monitoring techniques c. improved processing techniques d. all of the above Please select the best answer from the choices provided
Improved preservation techniques, improved monitoring techniques, and improved processing techniques this scientific advancements led to an increase in food safety, hence option D is correct.
What is food safety?Hazard detection includes new technologies for energy efficiency and waste reduction, an increase in food safety.
The conditions that need to be met in order to keep our food safe, and the detection of hazards, such as that image of the hurricane that allows us to see if and when that storm is coming.
Food safety is the practice of handling, preparing, and storing food in a way that reduces the risk of food-borne disease and injury.
Therefore, food products may come into contact with a variety of health risks as they move through the supply chain from field to factory to fork.
Learn more about food safety, here:
brainly.com/question/28025891
#SPJ6
Answer:
D: all of the above
Explanation:
Scientific advancements have led to an increase in food safety by improving preservation, monitoring, and processing techniques.
Improved preservation techniques, such as refrigeration, freezing, canning, and drying, help to slow or stop the growth of microorganisms that can cause foodborne illness.
Improved monitoring techniques, such as DNA-based testing, have made it easier to identify and track foodborne pathogens, allowing for quicker and more targeted responses to outbreaks.
Improved processing techniques, such as pasteurization and irradiation, have been developed to kill or remove harmful bacteria and other microorganisms from food products.
Overall, these advancements in science and technology have led to a safer food supply, reducing the risk of foodborne illness and increasing public health.
E23 verified.
Explain why the jet stream looks so different in picture one and picture two. Please refer to the tutorial to answer this question. Please answer using complete sentences.
Answer:
The picture on the left is an illustration of the jet stream on the northern hemisphere during summer. In the tutorial it states, the temperature contrast between cold and warm air masses are smaller, so the jet stream is not that strong only travelling at 50-70 mph. The picture to the right is an illustration of the jet stream on the northern hemisphere during winter. In the tutorial it states the temperature contrast between cold and warm air masses are greater, so the jet stream is very strong travelling at 90-160 mph.
Explanation:
Trust me this the correct answer.
The differences in the appearance of the jet stream in two pictures can be attributed to various factors, most notably the atmospheric conditions and activities such as storms and atmospheric turbulence occurring at the time when the pictures were taken.
Explanation:The jet stream appears different in the two pictures due to the different factors influencing its visual representation in each picture. In general, jet streams are fast flowing, narrow air currents found in the atmosphere of some planets, including Earth. These streams are typically found in the troposphere or stratosphere. The path of the jet stream, which includes direction and speed, is influenced by a number of factors including the rotation of Earth on its axis and temperature differences in the Earth's atmosphere.
However, other external factors can attribute to their appearance in pictures. For instance, the presence of storms could make the flow of the jet streams appear more turbulent and change their course, while atmospheric turbulence can distort the path of light, making the jet streams seem to take different shapes. For the planets like Jupiter and Saturn mentioned in the tutorial, their differing latitudinal wind patterns and pressures also contribute to the varying appearances of their respective jet streams.
Learn more about Jet Streams here:https://brainly.com/question/32089956
#SPJ2
How might the role of mucous membrane in the lung be similar to the role of the membrane surrounding a normal blood cell?
Answer:
Mucous film, layer lining body depressions and waterways that lead to the outside, predominantly the respiratory, stomach related, and urogenital lots. Mucous films line numerous plots and structures of the body, including the mouth, nose, eyelids, (windpipe) and lungs, stomach and digestion tracts, and the ureters, urethra, and urinary bladder.
Explanation:
In the DNA double helix, how are the two strands of DNA held together?
Answer:
Option D
Explanation:
The DNA strands are composed of nucleotides which consists of sugar, phosphate and nitrogenous bases. The base pairs of one DNA starnd bind to the base pair of other DNA strand. The nitrogenous bases in the two strands of DNA make pairs such as A binds with T and C binds with G.
These base pairs are held together by the hydrogen bonds which are weak molecular forces.
Hence, option D is correct
You observe a sample under a microscope. It is 200 µm in diameter and has no nucleus. What would it most likely be?
Considering the size of 200µm and the absence of a nucleus, the sample observed under the microscope is most likely a bacterium as bacteria typically match these characteristics.
Explanation:The sample you observed under the microscope is 200 µm in diameter and has no nucleus. Based on these observations, the sample is most likely a bacterium. Bacteria are typically around this size and lack a nucleus. In contrast, human red blood cells, which are also devoid of a nucleus, are about eight micrometers in diameter which is significantly smaller than 200 µm. Furthermore, the size of some other cellular organelles and viruses is also comparatively small. Therefore, considering the size and absence of nucleus, the most probable classification of the sample would be a bacterium. Micrographs obtained through different microscope types can aid us to observe and study such small entities.
Learn more about Microscopy here:https://brainly.com/question/17083896
#SPJ12
The sample observed under the microscope is most likely a bacterium because of its size and lack of nucleus, which are characteristic features of prokaryotes like bacteria.
Explanation:From the description given in your question, the sample you observed that is 200 µm in diameter and has no nucleus is most likely a bacterium. Bacteria are typically a few micrometers in size and do not possess a nuclei, unlike eukaryotic cells. They fall under the category of prokaryotes, which are unicellular organisms without a true nucleus. Prokaryotes are distinct from eukaryotes, such as animal and plant cells, which do have a nucleus. Bacteria are visible under microscopes and can be seen in micrographs.
Learn more about Prokaryotic cells here:https://brainly.com/question/29771587
#SPJ12
Which of the following is not a reason that oceans are important to life on Earth?
source of fossil fuels
part of the water cycle
moderate climate
source of biodiversity
how many protons are in the nucleus of a carbon atom
Answer:
i'm pretty sure its 6 protons.
Explanation:
Carbon-14 is an isotope of the element carbon. All carbon atoms have 6 protons in their nucleus. Most carbon atoms also have 6 neutrons, giving them an atomic mass of 12.// = 6 protons + 6 neutrons\\. Carbon-14 atoms have two extra neutrons, which is a total of 8 neutrons.
A carbon atom has six protons in its nucleus, which is consistent across all its isotopes, such as carbon-12 and carbon-14. This defines its atomic number as (Option A) 6.
A carbon atom is defined by its atomic number, which is 6. This atomic number corresponds to the number of protons in the nucleus of the carbon atom. Therefore, all carbon atoms have exactly six protons in their nucleus.Carbon has several isotopes, such as carbon-12, carbon-13, and carbon-14. Despite these differences in isotopes, the number of protons remains the same across all carbon isotopes. For instance, carbon-12 (¹²C) has six protons and six neutrons, while carbon-14 (¹⁴C) has six protons but eight neutrons. The stability of these isotopes varies, with carbon-14 being naturally radioactive.Complete question as follows:
how many protons are in the nucleus of a carbon atom
A. 6
B. 12
What are substrates?
A. the products of chemical reactions
B. the enzymes used to speed up chemical reactions
C. the reactants of enzyme-catalyzed reaction
Answer: I believe the answer is C
Which promotes a more sustainable use of resources?
A. Decreasing overconsumption
B. Switching to oil-based electricity
c. Ending recycling programs
D. Using more land for agriculture
Answer:
a.
Explanation:
The correct answer is A. Decreasing overconsumption
Explanation
During the last years, environmental concerns have increased due to high levels of contamination and destruction of ecosystems. In response to this situation, a worldwide movement has emerged that promotes environmentally friendly practices that aim at reaching sustainability. The term "sustainability" refers to a global trend to find the balance between the conservation of nature and the use of natural resources; one of the most important principles to achieve this is to reduce consumption; this leads to a decrease in the negative impact of human societies as fewer resources are taken from nature and thus, ecosystems are preserved. So, the correct answer is A. Decreasing overconsumption
Sperm are the only human cells to have _____.
cilia
mitochondria
flagella
lysosomes
Answer:
The answer is flagella
Explanation:
Answer:
cilia
Explanation:
Which of these is associated with El Niño?
O
A. Below-average sea levels
O
B. A periodic warming of sea surface temperatures
O
c. Below-average sea surface temperatures
O
D. Periodic rises in carbon dioxide levels
SUBMIT
Answer
CORRECT ANSWER ► B
B- A periodic warming sea surface temperatures
☺☺☺
El Niño is associated with a periodic warming of sea surface temperatures, which is part of the short-term, worldwide climate event known as the El Niño-Southern Oscillation (ENSO). Hence, the correct option is B.
El Niño is a short-term, worldwide climate change event marked by the warming of the Pacific Ocean. This is an aspect of the El Niño-Southern Oscillation (ENSO) that affects weather patterns around the globe. During El Niño, typical weather patterns are disrupted, leading to significant effects such as increased rainfall in normally dry regions and diminished fish populations due to the warmer, nutrient-poor waters.
Coastal upwelling normally brings cold, nutrient-rich waters to the surface, but this is inhibited during El Niño events, deepening the thermocline and preventing the normally productive waters from supporting large fish populations. Moreover, ENSO events have a cyclical nature, typically occurring every two to seven years and can influence global temperatures and precipitation patterns.
Which of the following does NOT increase water density?
Decrease in temperature
Increase in water salinity
Increase in biomass
Increase in pressure
Answer:
Increase in biomass
Explanation:
All the other choices have attributes that influence the density property of water except biomass. Biomass is organic material/ matter that is mainly carbon-based – mainly derived from plants and animals. This has no relationship to water density even when the biomass is in the water because it's only gets suspended like sediment and does not get dissolved in the water.
How many kilograms are in
44 pounds? 1 kg = 2.2 lbs
44 lbs = [?] kg
Answer:
20 kg
Explanation:
think of it like this:
1kg=2.2 lbs, meaning that if I want to go from lbs to kilograms, I'll have to divide by 2.2 so to go from 44 pounds to kg divide 44 by 2.2.
To convert 44 pounds to kilograms, multiply by the conversion factor of 1 kilogram = 2.2 pounds. The answer is 20 kilograms.
Explanation:To convert pounds to kilograms, you need to multiply the weight in pounds by the conversion factor of 1 kilogram = 2.2 pounds. In this case, to convert 44 pounds to kilograms, you can set up a proportion:
44 pounds = x kilograms
1 kilogram = 2.2 pounds
Cross multiplying, you get:
x = 44 pounds × 1 kilogram / 2.2 pounds
x = 20 kilograms
Therefore, there are 20 kilograms in 44 pounds.
Learn more about pounds to kilograms conversion here:https://brainly.com/question/30782274
#SPJ2
What kind of relationship do snails and green-banded
broodsacs share?
producer-consumer
predator-prey
parasite-host
Answer:
its parasitism
Explanation:
plz gime me brainly
What happens when a sound wave moves from air to water?
It slows down.
It speeds up.
It stays the same.
It reverses.
Answer:
It slows down.
Explanation:
The wave moves slower through the air than it moved through the water.
That created the wave distance to be smaller than it was in water.
hope this helps☆
Answer:
Option (1)
Explanation:
Sound waves are produced due to the vibration of any particular object. These waves propagate freely in air. When these sound waves change its medium from air to water, which is a denser medium, then the velocity of these waves gradually decreases. It is because, in the denser medium, the materials are compressed tightly and the speed of the sound waves in water decreases with the increasing water depth.
Thus, when the sound wave travels from air to water, it gradually slows down.
Hence, the correct answer is option (1).
6. Which one of the following is NOT an organ system?
A. Lymphatic
B. Integumentary
C Nervous
• D Eliminating