Answer:
B) A. FALSO.
B. VERDADERO.
C. VERDADERO.
D. VERDADERO.
c) D. Contracción de los bronquios.
d) A. Axon, dendritas, cuerpo neuronal.
Explanation:
B) A. FALSO. La médula espinal es una estructura tubular larga y delgada, formada por tejido nervioso, que se extiende desde la médula oblonga del tronco cerebral hasta la región lumbar de la columna vertebral. El cerebro junto con la médula espinal forman el sistema nervioso central, y particularmente la médula espinal es la vía para transmitir los mensajes que envía el cerebro al cuerpo y del cuerpo al cerebro. Entonces no se ocupa de la apreciación de sensaciones.
B. VERDADERO. El cerebelo desempeña un papel importante en el control motor pero también puede estar implicado en algunas funciones cognitivas, como el lenguaje así como en el control emocional, la regulación de las respuestas de miedo y placer,. Aunque sus funciones relacionadas con el movimiento son las más importantes.
C. VERDADERO. El cerebro es la porción mas grande del encéfalo (órgano dentro del cráneo) y está formado por dos hemisferios. También comprende varias estructuras subcorticales, como el hipocampo, los ganglios basales y el bulbo olfativo. Es la región más grande del sistema nervioso central y sus funciones incluyen la iniciación y coordinación del movimiento, tacto, visión, oído, regulación de la temperatura, el razonamiento, las emociones, aprendizaje, etc.
D. VERDADERO. La médula oblonga o bulbo raquídeo es una larga estructura en forma de tallo que constituye la parte inferior del tronco encefálico. Se encarga de conectar al cerebro con la médula espinal, y es responsable de varias funciones del sistema nervioso autónomo que incluyen el control de la ventilación a través de señales procedentes de los cuerpos carotídeos y aórticos como también el control cardiovascular al regular los latidos cardíacos. Aunque también está relacionado con otras funciones tales como la tos, estornudo, reflejos del vómito y la deglución.
c) El sistema nervioso parasimpático (SNP) es una de las tres divisiones del sistema nervioso autónomo, siendo las otras el sistema nervioso simpático y el sistema nervioso entérico. El sistema nervioso autónomo se encarga de regular las acciones inconscientes del cuerpo, en donde el sistema parasimpático es responsable de la estimulación de las actividades de "descanso y digestión" cuando el cuerpo está en reposo, especialmente después de comer. Controla por ejemplo, la salivación, el lagrimeo, la micción, la digestión y la defecación. Su acción se describe como complementaria a la del sistema nervioso simpático, responsable de estimular las actividades asociadas a la respuesta de "lucha o huida". Entonces los procesos que son resultado de la acción del sistema nervioso parasimpático son:
D. Contracción de los bronquios. El SNP controla órganos en situaciones o momentos que requieren una respuesta rápida.
d) Una neurona o célula nerviosa es una célula eléctricamente excitable que se comunica con otras células a través de conexiones especializadas llamadas sinapsis. La misma consta de:
A. Axon (proyección larga y delgada de una célula nerviosa que conduce impulsos eléctricos conocidos como potenciales de acción), dendritas (extensiones protoplásmicas ramificadas de una célula nerviosa que propagan la estimulación electroquímica recibida de otras células neuronales al cuerpo celular), cuerpo neuronal (o soma, es la parte bulbosa de una neurona que contiene el núcleo celular)
help meeeee?
write a description of the ecosystem including biotic and abiotic factors? plz
Answer:
The correct answer is - Biotic factors are any living factors and abiotic factors are anything non-living in an ecosystem.
Explanation:
An ecosystem consists of all living organisms, non-living organisms that are present in a physical environment in a particular geographical area. The physical environment consists of several factors such as landscape, pH, climate, salinity, and other factors that represent abiotic factors.
Any living organism present in an ecosystem is biotic factor Examples of biotic factors include are mammals, birds, trees, microbes, grasses, fish, bacteria, and many more.
disadvantages of parthenocarpy to the plants
Answer:
-Seedless fruits can not be used to produce new progeny of any plant.
-Parthenocarpy is undesirable in nut crops because the seed is the edible part.
-Quality and Size of fruits get changed in case of Parthenocarpic fruits as compared to the normal state.
Explanation:
UNIT TEST!! Help!! :C
1. Which statements describe gene therapy? Check all that apply.
☐ It cures all cases of cystic fibrosis.
☐ It involves the modification of DNA.
☐ It is easy to apply to all cells affected by the disorder.
☐ It attempts to replace a mutated gene with normal DNA.
☐ It does not always cure patients who use it.
2. A fruit fly has black eyes. Having red eyes is a dominant trait (R) and having black eyes is a recessive trait (r).
Which describes the fruit fly’s genotype and phenotype?
A.)genotype: black eyes
phenotype: Rr
B.)genotype: black eyes
phenotype: rr
C.)genotype: rr
phenotype: black eyes
D.)genotype: Rr
phenotype: black eyes
Thank you sm for helping <33
Answer:
for number one i got ☐ It involves the modification of DNA
☐ It attempts to replace a mutated gene with normal DNA.
☐ It does not always cure patients who use it.
FOR NUMBER TWO I GOT:
D.)genotype: Rr
phenotype: black eyes
plz mark brainliest!!!
Answer:
☐ It cures all cases of cystic fibrosis.
☐ It involves the modification of DNA. √
☐ It is easy to apply to all cells affected by the disorder.
☐ It attempts to replace a mutated gene with normal DNA. √
☐ It does not always cure patients who use it. √
Explanation:
Question 4
Which characteristic is shared by all prokaryotes and eukaryotes?
A
ability to store hereditary information
B
use of cellular respiration for energy release
C
use of organelles to control cell processes
D
contain membrane-bound organelles
Answer:
A. The ability to store hereditary information.
Explanation:
Both prokaryotic cells and eukaryotic cells have DNA. In prokaryotic cells, the DNA is not contained in a membrane-bound nucleus while in eukaryotic cells, DNA is contained in the nucleus.
Which of the following is not an example of an ecosystem service?
a. water is purified as it trickles down through a wetland
b. green plants provide a carbon sink that can help reduce global warming
c. creativity born from interactions with nature
d. all of these are examples of ecosystem services
I could really use some help
The one that is not an example of an ecosystem service is creativity born from interactions with nature. The correct option is c.
What is an ecosystem?An ecosystem is a geographical area in which plants, animals, and other species, as well as weather and scenery, coexist to produce a life bubble. Ecosystems comprise both biotic (living) and abiotic (nonliving) components.
Plants, animals, and other species are examples of biotic factors. A marine ecosystem, for example, contains 32% of the world's producers because water covers three-thirds of the earth's surface and provides a natural habitat for a diverse range of small and large living species and plants.
Therefore, the correct option is c. creativity born from interactions with nature.
To learn more about the ecosystem, refer to the link:
https://brainly.com/question/19267717
#SPJ2
A mutation in the gene coding for a single-polypeptide enzyme results in the substitution of the amino acid serine, which has a polar R group, by the amino acid phenylalanine, which has a nonpolar R group. When researchers test the catalysis of the normal enzyme and the mutated enzyme, they find that the mutated enzyme has much lower activity than the normal enzyme does. Which of the following most likely explains how the amino acid substitution has resulted in decreased catalytic activity by the mutated enzyme?
A The substitution decreased the mass of the enzyme so that the mutated enzyme binds more weakly to the substrate than the normal enzyme does.
B The substitution altered the secondary and tertiary structure of the enzyme so that the mutated enzyme folds into a different shape than the normal enzyme does.
C The substitution caused many copies of the mutated enzyme to cluster together and compete for substrate to bind.
D The substitution caused the directionality of the enzyme to change such that the amino terminus of the normal enzyme has become the carboxy terminus of the mutated enzyme.
Answer:
Bats have few natural predators -- disease is one of the biggest threat. Owls, hawks and snakes eat bats, but that’s nothing compared to the millions of bats dying from White-Nose Syndrome. The disease -- named for a white fungus on the muzzle and wings of bats -- affects hibernating bats and has been detected in 33 states and seven Canadian provinces. More than 6.5 million bats have died so far from White-Nose Syndrome. Scientists are working to understand the disease. You can help -- avoid places where bats are hibernating, and if you do go underground, decontaminate your clothing, footwear and gear.
Explanation:
the answer is c
Which of the following statements about natural selection is FALSE? *
a. Natural Selection occurs when organisms with better fitness for an environment survive and reproduce at a greater rate than others.
b. Scientists have evidence that natural selection is continuing to occur even today.
c. Natural selection causes individuals to change the trait they are born with to adapt to a new environment.
d. Natural selection is not a random phenomenon and is a critical part of the theory of evolution.
Answer:
a.
Explanation:
the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
You look at the cell under a microscope and see that it has 34 body chromosomes and one nucleus. Second view: Several hours later, you look at the same cell again and see that it has double the amount of DNA and one nucleus. Third view: A little while later, you see that it has one cell with 68 chromosomes and two nuclei. What stage of the cell cycle was this cell in when you viewed it at each time point
How would the Earth's climate change if its obliquity shifted from 23.4° to 0°, and all other factors remained the same?
A-Global warming would increase rapidly.
B-It would shift the Earth into a global ice age.
C-The seasonal changes would be more extreme.
D-There would be no seasons.
Answer:
There would be no seasons.
Explanation:
The tilt of the Earth's axis is what causes seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere. If there was no tilt, the rays hitting the Earth would have minimal changes, meaning no seasons.
EOC Biology STAAR Test Prep
In humans blood type is determined by the A, B, and O alleles. The A and B alleles are codiminant to each other and dominant over the O allele. An individual with the AO genotype and an individual with the BO genotype can produce offspring with which of the following phenotypes.
O only
A or B only
A, B or O only
A, B, AB, or O
Please explain, also this is not a test its a test PREP
Answer:
D. A, B, AB, or O
Explanation:
We can start by visualizing all the possible genotypes of the offspring by drawing a Punnett square, which is a visual representation of the different possible combinations of alleles:
Individual 1 = AO, Individual 2 = BO
A O
B AB BO
O AO OO
Here we can see that there are 4 possible genotypes: AB, BO, AO and OO based on the alleles of the parents. Now we can match the genotypes to phenotypes to answer the question:
A and B are codominant, meaning that both will be expressed equally if both are present. Therefore the genotype AB will result in an AB phenotype.
Next, since A and B are both dominant over O, they are the alleles that will be expressed in the phenotype if paired with an O. This means that the genotype AO will result in an A phenotype, and likewise, genotype BO will result in phenotype B.
Finally in the genotype OO, although O is a recessive allele, there are no dominant alleles here to mask them, therefore O is expressed in the phenotype.
Hence, from the genotypes AO and BO, the possible offspring genotypes are AB, BO, AO and OO, translating to the possible phenotypes: A, B, AB or O.
Hope this helped!
Does hereditary deafness affect the person's lifespan.
Answer: Yes, yes it does
Answer:
No, it will just make it harder.
If over time, a population has a larger birth rate than death rate, what is happening to the size of that population?
- Staying the same over time
- Decreasing in size
- Decreasing first and then growing
- Growing in size
Sea turtles, mosquitoes, and frogs all show a
c I think it is c have a good dsy
Describe how amino acids are categorized by their chemical properties. Explain how a change in the amino acid sequence of the FXR1 protein could decrease the ability of the protein to bind to RNA .
Answer:
The nature of amino acids can vary they can be acidic, alkaline, or neutral based on the functional group attached to their side-chain. The functional group of the amino acids determines the property of the hydro loving or phobic nature of particular amino acids. Interaction of different biomolecules depends on their affinities with one another such as hydrogen bonds, ionic bonds, van der Waals interaction based on structural and fundamental unit or monomer of the biomolecule.
Based on the given explanation, we can say that if there is a modification in the sequence of the building block amino acid of the FXR1 protein, might lead to a decrease in affinity to bind to the RNA by changing in the binding domain of this protein. There might be a complete structural change such that it can no longer interact with RNA.
Amino acids are grouped on the basis of their side chains.
Amino acids are categorized on the basis of their side chain attachment. All the amino acids has a specific side chain which is known as an R group. This R group is also attached to the α carbon. The R groups consist of shapes, sizes, charges, and reactivities. This allows all amino acids to be grouped or categorized on the basis of their chemical properties of their side chains.
If there is a change occur in the sequence of the building block amino acid of the FXR1 protein, it might lead to a decrease of binding to the RNA. There might be a complete change in the structure which leads no more attachment with RNA so we can conclude that amino acids are grouped on the basis of their side chains.
Learn more about amino acids here: https://brainly.com/question/2526971
Learn more: https://brainly.com/question/23468809
Screenshot 1. The graph below represents changes in two different fish populations over time.
Which of the following most likely caused the change in the fish population after Year 3?
A. A change in habitat occurred so the orange fish could no longer blend in with the habitat.
B. The food source for all the fish decreased.
C .A change in habitat occurred so the dark green fish could no longer blend in with the habitat.
D. Climate change affected the habitat killing off the bright orange fish.
Screenshot 2. Use the chart below to identify the term that best describes the energy role for each organism. Which of the following correctly describes the energy roles of the organisms in the table?
A. 1 – Herbivore, 2 – Scavenger, 3 – Decomposer, 4 – Carnivore, 5 – Omnivore
B. 1 – Carnivore, 2 – Decomposer, 3 – Scavenger, 4 – Omnivore, 5 - Herbivore
C. 1 – Decomposer, 2 – Scavenger, 3 – Omnivore, 4 – Herbivore, 5 – Carnivore
D. 1 - Carnivore, 2 – Decomposer, 3 – Scavenger, 4 – Herbivore, 5 - Omnivore
Answer:
screnshoot 1 - C
screenshoot2-C
can someone explain it or maybe give me the answer, im desperate :)
What does the Serengeti ecosystem smell like?
Answer:
Everywhere you look, the world is truly wild, in a way that's just breathtaking. What does it smell like? You wouldn't think it would be noteworthy, but the whole Serengeti smelled clean. Fresh, kind of, with just a trace of dust on the wind.Explanation:
In which types of cells must mutations occur in order for the mutation to be passed on to future generations?
1. Somatic cells
2. Genes
3. Gametes
4. Alleles
Answer:
Genes
Explanation:
Mutations occurs on genes
Answer:
2. Genes.
Explanation:
Mutations can occur in either cell type. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gamete s will carry the mutation and it will be passed on to the next generation when the individual successfully mates.
Do plants absorb nitrogen?
Answer:
No, not absorb nitrogen.
yes. plants absorb nitrogen through soil
what is the genetic of finger?
Explanation:
this is the answer hope it works
In very dry environments, sand can pile into large dunes.
The wind causes ripples on the surface of the sand.
Fossilized ripples of windblown sand
What do fossilized dunes such as the one shown in the photo tell scientists
about the environment?
A. It was once cold and wet.
B. It used to be a glacier.
C. It used to be an ocean.
OD. It was once dry and windy.
Answer:
D
Explanation:
the picture has ripples and is dry and cracked, hence the envirmoment having to be dry and windy.
Answer:
It was one dry and windy.
Explanation:
what do you think? So why don't t apes walk upright like us?
Apes were basically monkeys. They walk on their hands and feet but crouched. There's a bunch of theories saying that humans evolved from apes. As apes evolved, they started walking upright.
4. Many of your body’s responses operate off of either negative or positive feedback loops. When you are cold, you shiver. Explain why that happens.
Answer:
The tendency to maintain a stable, relatively constant internal environment is called homeostasis. The body maintains homeostasis for many factors in addition to temperature. For instance, the concentration of various ions in your blood must be kept steady, along with pH and the concentration of glucose. If these values get too high or low, you can end up getting very sick.
Homeostasis is maintained at many levels, not just the level of the whole body as it is for temperature. For instance, the stomach maintains a pH that's different from that of surrounding organs, and each individual cell maintains ion concentrations different from those of the surrounding fluid. Maintaining homeostasis at each level is key to maintaining the body's overall function.
Explanation:
shivering burns fat to help keep one warm
Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points. In contrast to negative feedback loops, positive feedback loops amplify their initiating stimuli, in other words, they move the system away from its starting state.
Khan academy
Which systems would work best with the nervous system?
Answer:
endocrine
Explanation:
Hybrid cars can switch back and forth between gasoline power and electric power in a way that reduces fuel use
As a result, they are more fuel efficient than traditional cars that run only on gasoline. They offer one solution to
the problem of people consuming too many fossil fuels to meet their transportation needs.
Which of the following behaviors could further refine this solution?
A. People can drive hybrid cars instead of using more conservative tecnics.
B. People can drive separate hybrid cars instead of carpooling
C. People can use additional conservation tactics, like sometimes bicycling
D. People can drive hybrid cars more often than they need to
Answer:
C. People can use additional conservation tactics, like sometimes bicycling
Explanation:
According to this question, cars called HYBRID cars are said to have the ability to switch back and forth between gasoline power and electric power in a way that reduces fuel use. This solves the problem of buying excessive transport fuel.
Asides the hybrid car, one can also use a more conservative approach, which is bicycling. Hence, the use of additional conservation tactics, like sometimes bicycling.
Alleles are different versions of:
Genotypes
Genes
Chromosomes
Phenotypes
Answer:
Genes
Explanation:
Most available freshwater is used for
Answer:
ok so In most regions of the world, over 70 percent of freshwater is used for agriculture.
how does light affect poultry production?
Answer:
Red light stimulates and promotes sexual activity and increases growth rates for chickens and turkeys at the beginning of the rearing period. It also increases locomotion, thereby minimizing leg disorders at the end of the rearing period.
Explanation:
Answer:
Red light stimulates and promotes sexual activity and increases growth rates for chickens and turkeys at the beginning of the rearing period. It also increases locomotion, thereby minimizing leg disorders at the end of the rearing period.
Explanation:
look up ur question and the answer is there
In feedback inhibition, does an enzyme’s substrate attaches to an allosteric site?
Answer:
They bind to an allosteric site which induces a conformational change that increases the affinity of the enzyme's active site for its substrate. This increases the reaction rate.
How have the factors that trigger an asthma attack changed since the 1900s? As a researcher, how would you put together the clues given here to explain the emerging epidemic?
so if you look up things that can cause an asthma attack it will also show that viruses and bacteria are a cause. with asthma you lungs could already be inflamed as well as your air way wich makes it harder to breath. when you have c-19 it will inflame your lungs even more so it makes it even harder to breath given an asthma attack. more asthma attack now are probably caused by c-19 because it is all over the place and the percent of asthma attack by virus has dramatically increased.