Which pathway crosses over in the medulla?
a. Lateral spinothalamic pathway
b. Posterior column pathway
c. Anterior spinothalamic pathway
d. Spinocerebellar pathway
Answer:
B - Posterior column pathway
The only spinal column that does not cross over as it enters the spinal cord is the posterior column. Instead, the medulla oblongata is where the posterior column transitions. Therefore, option (B) is correct.
What is Posterior column pathway?The dorsal column–medial lemniscus pathway (DCML) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints. It is also known as the posterior column–medial lemniscus pathway, or PCML.
The only column other than the posterior one to enter the spinal cord without making a crossing is the posterior column. In its place, the posterior column makes a U-turn in the medulla oblongata.
Therefore, option (B) is the correct option.
Learn more about Posterior column pathway, here:
https://brainly.com/question/28271023
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The changes that occurred in Yellowstone National Park after all of its wolves
were killed showed that wolves are
A. harmful to the ecosystem
B. a keystone species in the ecosystem
C. a producer in the ecosystem
D. the only predators in the ecosystem
Is sickle cell gene mutation positive, negative, or neutral?
The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.
Liverworts, like the ones shown here, are nonvascular plants. They do not grow tall. Explain how the tissues in liverworts affect their size.
Guys I'm so confused. Please help!
Answer: The tissue structure of the liverworts restricts them to a type of environment that affects their size.
Explanation:
Nonvascular plants, also called the Bryophytes in Kingdom Plantae, are simple plants that grow in damp places on land and as the name implies, are non vascular plants( that is, they lack vascular tissues). There are three types of nonvascular plants which includes:
--> Mosses
--> liverworts and
--> hornworts.
Liverworts are restricted to a particular size through the type of tissue they have ( non vascular) because it predisposes them to lack conducting vessels like the phloem and xylem found in vascular plants which aids in conducting water and food to various parts of the plants. Also they do not grow tall like the vascular plants because they lack the qualities that will enable them do so, such as roots, stems and leaves.
Nonvascular plants are low-growing, reproduce with spores, and need a moist or damp environment.
Not all cells have a cell membrane. True False
True
Explanation:All cells have cell membranes. There are variations between cell membranes, but the same basic structure exists in all cells.
hope this help! ^^
The type of membrane protein that gives cells specific identity are called:
Markers
Channels
Receptors
Pumps
Aquaporins
Answer:
Membrane markers allow cells to recognize one another, which is vital for cellular signaling processes that influence tissue and organ formation during early development. This marking function also plays a later role in the “self”-versus-“non-self” distinction of the immune response.
Explanation:
which structures carry out cell movement?
i need help asap plz
Answer:
In addition to playing this structural role, the cytoskeleton is responsible for cell movements. These include not only the movements of entire cells, but also the internal transport of organelles and other structures
which of the following is a statement of the first law of thermodynamics?
Answer:
Which of the following is a statement of the first law of thermodynamics? Energy can be transferred/transformed, but it cannot be created or destroyed. ... Whenever energy is transformed, there is always an increase in the: entropy of the universe.
Explanation:
Answer:
✔ Heat is transformed, but not created or destroyed.
Explanation:
Which level of organization is not found in every protein
Answer:
I Think...
Explanation:
Each protein has a particular structure necessary to bind with a high degree of ... Others, like titin (a protein found in muscle), are very large Organization of Protein Structure ... This single hydroxyl orientation difference does not allow galactose to bind to hexokinase and thus hexokinase exhibits specificity of binding.
how many holes are in the human body?
Answer:
I think there are 8 holes in a male and 9 holes in a female. Not including pores.
Explanation:
please paki sagutan
Answer:
Ang mga dapat na taglay ng mga kabataang asyano:
- May pagpapahalaga sa sariling pinag-mulan.
- May taglay na kababaang loob.
- Marespeto sa pamilya at kapwa.
- Pagkakaroon ng bukas na isipan.
Ang mga di-dapat na taglay ng mga kabataang asyano:
- Manatili sa sariling pag-iisip.
- Ikamuhi ang sariling bansa.
- Pag patuloy na pagsuporta sa desisyon ng ibang bayan.
- Pagpilit sa gusto at nais na walang sapat na dahilan.
different categories of cells and give one example in each catergory
Cells are of two types: eukaryotic, which contain a nucleus, and prokaryotic, which do not. Prokaryotes are single-celled organisms, while eukaryotes can be either single-celled or multicellular.
I am usually single stranded
DNA ONLY
RNA ONLY
BOTH DNA AND RNA
Answer:
BOTH DNA AND RNA
Explanation:
Answer:
hi you wasted one of the answers i had for my question so im returning the favor :)
Explanation:
How does nitrogen help plants to grow?
Write a logical hypothesis
Answer/Explanation:
Two unaffected parents can have affected children, that means cystic fibrosis must be a recessive trait.
The two parents must each have one copy of the cystic fibrosis allele, but are themselves unaffected. By chance, the son (shaded) inherited both of these copies and is affected. The daughter either inherited one or zero copies of the cystic fibrosis allele, as she is unaffected.
Unlike other lipids, steroids can diffuse through a cell membrane.
False
True
Purple flowers are dominant to white flowers. A heterozygous purple flower is crossed with a white flower. What are the probabilities of the phenotypes and genotypes of their offspring?
Answer:
50% probability of Pp (purple) or pp (white) genotype.
Explanation:
P = purple gene
p = white gene
Punnet squares show the possible genotypes and probabilities of each genotype in the offspring of a cross:
Purple flower genotype (heterozygous) = Pp
White flower genotype = pp
Punnet Square:
[tex]\left[\begin{array}{ccc}&P&p\\p&Pp&pp\\p&Pp&pp\end{array}\right][/tex]
Potential genotypes for offspring are Pp and pp;
According to the Punnett square, 2 of 4 offspring will have the Pp genotype and the other 2 will have pp genotypes;
This means 2 should be purple and 2 white;
Or, there is a 50% chance of having either genotype, of being purple or white.
Let us assume the following:
Flower color is represented by the allele A.Hence, the dominant purple color would be A, while the alternate white color would be represented by a.From the above assumptions, a heterozygous purple flower would have the genotype Aa, while a white flower would have the genotype aa.
Now, crossing the two flowers:
Aa x aa
Aa Aa aa aa
From the results of the cross, the offspring's genotypes, phenotypes, and their respective probabilities would be as follows:
Aa - purple color - 1/2aa - white flower color - 1/2In order words, the cross will yield offspring with purple color flower (genotype, Aa) and white flower color (genotype, aa) each with 1/2 probability.
More about monohybrid crossing can be found here: https://brainly.com/question/15521718
Ansel Adams' constant energy and activity helped him achieve notoriety and prestige in the early 1930's.
Which word is the best synonym for the underlined word in the sentence above.
a. honor
C. awards
b.
wealth
d fame
Answer:
It's "D"
Explanation:
Fame
Answer:
it d
Explanation:
How are scientists using the lotus leaf as inspiration to solve problems?
g Blood flows through a coronary artery that is partially blocked by deposits along the artery wall. Through which part of the artery is the flow speed largest
Answer: The question is incomplete and the options are not given but here are the options gotten from another websites.
A. Narrow part.
B. Wide part
C. The flow rate are the same in both part.
The correct option is C.
The flow rate are the same in both part.
Explanation:
The flow rate are the same in both because when there is partial blockage at the artery wall, the blood flow speed will reduce or stop, therefore the blockage will be a barrier or hindrance to free blood flow and therefore, both the narrow part and wide part will receive the same level of blood flow because of the blockage and this blockage result in restricted blood flow which in one way or the other hinder oxygen supply to the heart. The blockage deposits can cause a thickened artery wall and when blood flow is restricted it causes chest pain and if it stop it can cause heart attack. Blockage deposits can be as a result of artery wall damage.
Vertebrates can be classified in.
Explanation:
the middle one light blue
Answer:
The middle option
Explanation:
Vertebrates can be mammals, birds, reptiles, amphibians, and fish.
Most fish do have backbones.
What’s the answer ? I will very appreciate if someone helps me
can somebody do 4 and 5 for me
Answer:
4. According to what is observed in the diagram, the maltose (substrate) binds to the maltase (enzyme) to obtain glucose molecules (product), in a process of hydrolysis of the maltose.
5. Three factors that can affect intestinal maltose activity - slowing it down or stopping it - are temperature, pH and substrate depletion.
Explanation:
4. Enzymes, such as maltase, have the function of making a reaction faster and decreasing the activation energy. Maltase is responsible for breaking down a maltose molecule, a dimer, into two glucose monomers, which is a hydrolysis reaction of the bonds that hold glucose molecules together.
5. There are several factors that can cause the decrease or cessation of the activity of an enzyme. Enzymes are activated when substrate is available and work best under ideal temperature and pH conditions. When there are alterations of these factors, the enzyme will reduce or stop the reaction in which it intervenes.
pH: when the pH increases or decreases it produces a decrease in the speed of reaction that catalyzes an enzyme. Very high or low pH levels can denature the enzyme and make the expected reaction not occur. Temperature: like pH, changes in temperature can slow or stop maltase activity..Substrate availability: It is a fact that when the specific substrate of an enzyme becomes depleted, the rate of reaction slows down, stopping when no substrate is available.According to Jean piaget most preschool children are in the ______ stage of mortal development ?
On which continent were fossils of both Glossopteris and Lystrosaurus discovered?
MARK BRAINLIEST PROMISED!
Answer:
Antartica
Explanation:
I played the quiz and got it right!
Answer:
Antarctica and Africa
(or C if taking Edge)
Explanation:
Lystrosaurus fossils are only found in Antarctica, India, and South Africa. ... The Glossopteris fossil is found in Australia, Antarctica, India, South Africa, and South America—all the southern continents.
9) A young plant will develop from the ___ inside the seed.
petiole
zygote
anther
axil
what is the difference between a heterogeneous mixture and a homogeneous mixture
Answer:
A heterogeneous mixture is a mixture where throughout the solution the composition is not uniform. Through definition, a single-phase consists of a pure substance or a homogeneous mixture. There are two or more phases of a heterogeneous mixture.
Homogeneous mixture is a mixture which has uniform composition throughout its mass.Example:-air,saline solution,most alloys and bitumen.Heterogeneous mixture is simply any mixture that is not uniform in composition.Example:-Sandy water,Orange juice with pull,cereal in milk.
Help me pls I don’t understand
Answer:
im 99% sure its b :)
Help MrBeast and hundreds of thousands others plant trees and help prevent Global Warming!!
Listen Please, this is a very important cause, our Earth has been suffering Global Warming since the 18th Century and has also experienced Climate Change, we need YOUR help to help us plant trees for better oxygen, a better Earth, and to help Earth. Earth has been here since forever and has been great to us, now we come and destroy it, now is the time to help prevent global warming, if you are going to answer, please just type #teamtrees and something positive. PLEASE NO NEGATIVITY.
As always, stay safe and WAP (water and plant) a tree. Thank you!
Answer:
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Answer:
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Explanation:
LETS HELP MRBEAST GLOBAL WARMING!!!!!!!!!!!!!!!!!!!!!!!!!!
the function of a cell wall
Answer:
Shhhhhhhhshehrhh
Explanation:
Jjshhhhhhh