What could be a result of an injury to the dorsal column?
A.
loss of sensation to pressure and touch
B.
loss of control over all involuntary movements
C.
inability of the body to maintain homeostasis
D.
inability to regulate the sleep-wake cycle
E.
loss of motor control
Answer:
A. loss of sensation to pressure and touch
Explanation:
Posterior column-medial lemniscus pathway also known as the dorsal column–medial lemniscus pathway (DMLP) is a pathway involved in recognition of sensory simulations and is found in central nervous system.
It is involved in conveying different sensations like like touch and vibration from skin and joints. Therefore, it can be said that the pathway plays significant role in perception of sensory information from different parts of the body. If any damage occurs to the pathway it can result in loss of sense of touch and vibration which is ultimately a lack of ability of a person to sense a touch or pressure in the body.
Hope it helps!
Answer:
A. Loss of sensation to pressure and touch
Explanation:
Please help ....... thank you in advance
Answer:
Here's what I get.
Explanation:
Your first problem is to figure out the formula to use.
You have an initial population P₀ that increases each year by 5 %, that is, by a factor of 1.05.
Each year, you multiply the population of the previous year by 1.05.
This gives you a geometric series, for which the general formula is
P = P₀rⁿ
P₀ = 11 500
r = 1.05, the common ratio from one year to the next
n = the number of years from now
The formula for your population is then
P = 11500(1.05)ⁿ
You must create a table with n as the independent variable and P as the dependent value.
I used Excel to create a table showing the population at half-year intervals (see below).
I also created a graph of the population growth.
You are probably aware that this is a completely unrealistic model, because the population cannot exceed the carrying capacity.
Instead, the graph will level off in a logistic growth curve as the population approaches 14 600.
Two pea plants with yellow peas are crossed. Most of their offspring have yellow peas, but about 25 percent of the offspring have green peas. For pea color, yellow is the dominant trait and green is the recessive trait. What does this tell you about the two parent plants?
Answer:
Two pea plants are crossed, both are with yellow color, offspring produced are 25% with green peas, while remaining 75% are with yellow peas. It clearly describes that yellow pea color is dominant while green is recessive one.
According to the given data, the ratio of both pea colors is 3:1 of yellow to green color. According to Mendel's law of inheritance, it is only possible when both the parents are heterozygous for the pea genotype. Let the genotype for yellow color be 'Y' and that for green color is 'y'. So, the genotype of both parents would be "Yy", they will fuse to form offspring having 25% green and 75% yellow phenotype of pea color.
Final answer:
Both parent plants must have been heterozygous (Yy) for pea color, resulting in 75% of offspring with yellow peas and 25% with green peas, as predicted by a Punnett square analysis and aligning with Mendelian inheritance.
Explanation:
When two pea plants with yellow peas are crossed and about 25 percent of the offspring have green peas, we can deduce that both parent plants were heterozygous for pea color (Yy). The observed trait of pea color, where yellow is dominant and green is recessive, aligns with Mendelian inheritance patterns as discovered by Gregor Mendel. To understand this, we can use a Punnett square analysis to predict the genotypes of their offspring.
In a Punnett square crossing two heterozygous (Yy) parents, we expect the following genotype percentages in the F2 generation:
YY (25% - yellow peas)Yy (50% - yellow peas)yy (25% - green peas)Given that the yellow trait is dominant, 75% of the offspring will show yellow peas, while 25% will show the recessive green peas, confirming that both parents must have the genotype Yy.
What did astronomer Edwin Hubble discover in 1929?
I need it up to 4 sentences
Answer:
Edwin Hubble discovered that the universe was expanding. he used his known 100 inch telescope to discover that our milky way was one of many galaxies. that these galaxies are part of an ever expanding universe. This discovery changed the way we and scientists look at the universe
Edwin Hubble discovered that the universe is expanding, providing critical evidence for the Big Bang theory and altering cosmological understanding.
In 1929, astronomer Edwin Hubble made a groundbreaking discovery that reshaped our understanding of the cosmos.
Using the Mount Wilson Observatory, he observed distant galaxies and found that their light was shifted towards the red end of the spectrum, indicating they were moving away from us.
This revelation led to the formulation of Hubble's Law, showing a proportional relationship between a galaxy's distance and its velocity of recession.
The implications were profound, suggesting the universe was expanding. This provided pivotal evidence for the Big Bang theory, challenging the prevailing notion of a static and unchanging universe.
Hubble's discovery fundamentally altered cosmology, setting the stage for our modern understanding of the vast and dynamic universe we inhabit.
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According to the RNA world hypothesis, RNA acted as the genetic material and catalyzed reactions in ancient cells. What conclusion can you draw from this?
Answer:
This implies that DNA and proteins evolved after RNA.
Explanation:
It is believed that RNA predated today's cells in evolutionary history. RNA existed as the genetic material of the primitive cells of the time that were mainly constituted of globules of fat oil suspended in water in the oceans and lakes. Even in cells today, RNA molecules themselves can act as catalysts such as in the case of peptidyl transferase reaction that takes place on the ribosome.
The RNA world hypothesis suggests that RNA was the precursor to modern life, serving as both genetic material and a catalyst for biochemical reactions in primitive cells, with the discovery of ribozymes supporting this theory.
The RNA world hypothesis focuses on the concept that RNA was the original biomolecule at the forefront of cellular life, functioning as both genetic material and a catalyst for chemical reactions. This leads to the conclusion that, before DNA and proteins took over these roles, RNA molecules might have formed the basis of primitive life forms, storing genetic information, and facilitating metabolic processes. The discovery of ribozymes, or catalytic RNA molecules, supports this hypothesis, suggesting RNA's central role in early biological evolution. In modern cells, RNA still plays a critical part in genetic regulation and processing, with ribosomes, the cell's protein-synthesis factories, leveraging RNA's catalytic capabilities.
What is the nucleolus.
A: the entire DNA found in a cell
B: the membrane surrounding the nucleus
C: a ball of fibers inside the nucleus
D: an information organelle that makes protein
Answer: C
Explanation: The nucleolus is found inside the nucleus and produces ribosomes. This is also where ribosomal DNA genes are transcribed.
what are the basics of biology?
Biology is the study of living organisms and their interactions with the environment. It involves understanding the key properties of life and the hierarchical organization of living things. Biologists also explore evolutionary relationships among organisms.
Explanation:Biology is the study of living organisms and their interactions with one another and their environment. It encompasses the study of everything from cells to ecosystems. The basic principles of biology include key properties shared by all living organisms, such as order, sensitivity, reproduction, growth and development, regulation, homeostasis, and energy processing. Biologists also examine the hierarchical organization of life, from atoms to the biosphere, and study the evolutionary relationships among organisms.
A geology student finds a rock formation composed of sedimentary rock. Based on the principle of _______, the student concludes that the layers on the bottom are older than the layers on the top.
ANSWER:
Based on the "principle of Superposition", the geology student can say that the layers on top are "younger" than the layers present below.
EXPLANATION:
The principle of superposition is a basic principle in geology which states that in a "sequence of strata", any stratum is "younger" than the one on which it "rests". Sedimentary rocks are formed by deposition of "one layer on top of another". Therefore, the "layers at the bottom will be older" than the layers of rocks that form above the lower ones.What are the reactants and products of the ETC (electron transport chain)?
Answer:
Reactants: glucose oxygen and ADP
Products: Water, CO2 (carbon dioxide), and ATP
Electron transport chain (ETC) is a biological process that consists of protein networks that relocate the electron from donors to acceptors through an oxidation-reduction reaction.
This creates an electrochemical gradient across the membrane resulting in ATP formation.
Reactants of ETC are: Glucose, oxygen and ADP.Products of ETC are: The main product is ATP while water and carbon dioxide are the waste products.The electron transport chain uses these reactants in order to produce 38 ATP from 1 glucose molecule.This process occurs in the inner membrane of the mitochondria.Therefore, glucose, oxygen and ADP are the reactants, whereas ATP and water are the end products.
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In most settings pharmacy technicians wear
Answer:a) a formal business suit
B) laboratory coats or scrubs
C) jeans and a dress shirt
D) a shirt, tie, and/or a dress/skirt
Explanation:
Most dissolved carbon in the ocean is used to form which structure in marine organisms?
The fronds of giant algae
The muscle tissue of small fish
The nerves of giant mollusks
The skeletons of coral polyps
Answer:
D
Explanation:
Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter. Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons
Answer: The skeletons of coral polyps.
Explanation:
The photosynthesis by the aquatic plants, atmospheric carbon dioxide dissolved in the oceanic water, the decomposed and degraded matter of animals and plants can increase the concentration of the carbon dioxide in the oceanic water. This carbon dioxide can be useful to develop the coral reef the hard skeleton structure composed of calcium carbonate by the colonies of the coral polyps.
What is the endosymbiont hypothesis?
Answer:it is a theory which describe about the eukaryotes
Explanation:
a theory which state that eukaryotes evolve from different process of free living prokaryotes by incorporated into larger prokaryotic cell
Agricultural land is cleared for limestone mining. Which of these plans prevents the permanent dislocation of local farmers due to mining in this location?
Water the mining area regularly
Reduce the use of heavy machinery in the mining area
Choose other uninhabited locations for limestone mining
Make reclamation mandatory after limestone has been removed
Answer:
Make reclamation mandatory after limestone has been removed
Explanation:
Answer: Option (4)
Explanation: Mine reclamation must be adopted in order to carry out agricultural activities after mining is over in a particular place. This method helps in regaining the essential ingredients upto some extent, for future cultivation.
This method must be adopted before the mining starts. The surface water as well as the ground water can be prevented from getting contaminated by the mining activities. The area selected for mining should be at an isolated place, away from the human inhabitants.
Thus, the correct answer is option (4).
Consider the overall shape of this cell.
Which geometric solid is the best model for these cells?
Bo.
A. A sphere
O
B. A right circular cylinder
O
C. A square pyramid
OD. A cube
The geometric solid that best model for these cells is a square pyramid. (Option C).
What is square pyramid?
A square pyramid is a three-dimensional geometric figure that has a square base and four triangular faces meeting at a common vertex or apex.
The base of the pyramid is a square, and the triangular faces connect the corners of the base to the apex.
The height of the pyramid is the perpendicular distance from the apex to the base.
So if we consider the overall shape of the cell in the diagram, the geometric solid that best model for these cells is a square pyramid.
Which of the following is an example of a natural source of air pollution?
A. Burning coal and natural gas releases carbon dioxide.
B. Plowing and harvesting crops releases dust particles.
C. Blowing wind creates dust storms that release particles.
D. Mining releases gases trapped beneath Earth's surface.
Answer: C - Blowing wind creates dust storms that release particles.
Explanation:
just took it
Natural pollution can be caused by different sources. Option C. Blowing wind creates dust storms that release particles.
What are the natural sources of pollution?When talking about natural sources of pollution, we refer to the emission of polluting elements from natural organims biotic or abiotic elements in which human activities are not involved.
Natural pollution is usually less harmful than human activity pollution. This pollution is released, among others, by volcanoes, oceans, plants, anaerobic and aerobic activities. Particularly, emissions from plants and microbial activities that produce biogenic emissions might be related to natural pollution.
Among others, we can mention,
volcanic eruptionsdust moved by windsgasses emitted from fecessea salt sprayvolatile organic compound emissions from plants.According to this information, the correct option is C. Blowing wind creates dust storms that release particles.
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what is directly responsible for matter moving and changing inside an animal body
Answer:
Energy
Explanation:
Energy is directly responsible for matter moving and changing inside an animal body.
Answer:
Energy
Explanation:
Energy is primarily responsible for all sorts of transformation of matter in and outside a body.
A food contains energy , that a plant has entrapped by converting solar energy into chemical energy. . When this food enters into the body, body tries to use this chemical energy for all its metabolic processes in the form of nutrients.
Hence, a food entering body through mouth is acted upon by various physical process such as churning, chewing, diluting, grinding etc. and chemical processes such as enzyme action , acid and base reaction to transform this chemical energy in food into usable form.
The change of England's Biston betularia moth populations from light colored to dark colored is an example of _____.
Answer:
The correct answer for this is: Microevolution.
Explanation:
The change of England's Biston betularia moth populations from light colored to dark colored is an example of 'Microevolution'.
Basically, the change that occurs over time in the allele frequencies within a group of species or population is known as microevolution.
The four processes due to which this change occurs include gene flow, selection (natural and artificial), mutation and genetic drift.
Answer:
Microevolution.
Explanation:
What is a nonnative species?
A. A species that does not normally live in an area
B. A species that increases biodiversity
C. A species that is a poor predator
D. A species that has no permanent home
Answer:
A species that has no permanent home.
Answer:
I think it's D. A species that has no permanent home .
Which best describes the permeability of a membrane?
O
A. The number of molecules in the membrane
O
B. The total thickness of the membrane
O
C. The flexibility of the membrane
O
D. The ability to allow materials to cross a membrane
Answer:
D. The ability to allow materials to cross a membrane
Explanation:
It all has to do with the size of the materials trying to pass through. All other options do not make sense. Thickness, flexibility, and amount of molecules do not describe permeability.
Answer: the answer is D: The ability to allow materials to cross a membrane.
The enzyme DNA polymerase works only in the 5′ to 3′ direction. How does this affect the leading strand and the lagging strand?
A. DNA polymerase can work on both the leading and the lagging strand but is much faster on the leading strand.
B. DNA polymerase can use only the leading strand as a template. A different enzyme is used to synthesize DNA on the lagging strand.
C. DNA polymerase can work continuously on the leading strand but works discontinuously on the lagging strand, creating Okazaki fragments.
D. DNA polymerase can work continuously on the leading strand but must flip the lagging strand around before it can work on it.
Answer:
The correct answer is option C.
Explanation:
DNA polymerase is an enzyme of replication which adds nucleotides to the new or nascent DNA strand using energy in the form of ATP.
The type III of this enzyme binds new nucleotides in 5′ to 3′ direction after reading the bases of existing strand and adding complementary base pairs at 3’-OH group of the primer.
The new strand moving in the direction of 5' to 3' is synthesized continuously called leading strand as DNA polymerase moves in the same direction of replication fork but the strand running opposite to replication fork is made in fragments called Okazaki fragments called lagging strand.
Thus, option C is the correct answer.
Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain proteins that transport glucose against its concentration gradient. These proteins couple the movement of glucose to the movement of sodium down its concentration gradient. Red blood cells have transporter proteins embedded in their membranes. When bound by a glucose molecule, these proteins change shape and allow glucose to move down its concentration gradient into the cell.
Based on this information, what type of transport is used for glucose in blood and intestinal cells?
Answer:
From the given information, the transport of glucose in blood across the red blood cells takes place by facilitated diffusion, that involves the spontaneous passive-transport with the help of trans-membrane proteins or transporter proteins to move the ions or molecules down the concentration gradient.
While the transport of glucose in intestines take place via active transport mechanism. It takes place from gut into intestines. It occurs against the concentration gradient with the help of energy molecules like proteins.
Compare and contrast what happens in mitosis and meiosis.
Mitosis is important for growth and repair, while meiosis occurs in cells involved in sexual reproduction.
Mitosis is important for reproductive cells, while meiosis is needed for growth and repair of body cells.
Mitosis is a process that results in genetically different daughter cells, while meiosis is a process that results in identical daughter cells.
Mitosis is a process that requires two cell divisions, while meiosis is a process that requires one cell division and results in identical daughter cells.
Answer: The first one would be the correct answer
Explanation: Mitosis is important for growth ans repair, while meiosis occurs in cells involved in sexual reproduction. Why, because, mitosis, which produces genetically identical cells, is the basis of growth, tissue repair and asexual reproduction. The other form of division of the genetic material is called meiosis. Meiosis is a process that shares mechanisms with mitosis, but it should not be confused with it, since meiosis is typical of the cell division of gametes. It produces genetically distinct cells and, is the basis of sexual reproduction and genetic variability.
The statement 'mitosis is important for growth and repair, while meiosis occurs in cells involved in sexual reproduction' is CORRECT.
Mitosis is a type of cell division by which a parent cell generates two genetically identical daughter cells.
This type of cell division (mitosis) is fundamental for tissue growth and repair.
Moreover, meiosis is a type of reductional cell division that produces four cells with half of the chromosomes as the original parent cell.
Somatic cells divide by mitosis, whereas germline (gametic) reproductive cells divide by meiosis.
In conclusion, the statement 'mitosis is important for growth and repair, while meiosis occurs in cells involved in sexual reproduction' is CORRECT.
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which of the following would be an exception for the Fourth Amendment
Answer:
A simple example of the Fourth Amendment would be the right to protect yourself from unreasonable search and seizure. For example, a police officer does not have the right in your home and/or property without a warrant. Hope this helps...
Explanation:
Down syndrome, the most common genetic condition in the United States, is also called trisomy 21. What does this mean?
Answer:
Explanation:
It means that chromosome 21 has a third partial or complete copy of chromosome 21. The symptom severities vary somewhat.
Answer:
There are three set of chromosome 21
Explanation:
Trisomy signifies presence of abnormal three chromosomes instead of two.
Down syndrome is also known as trisomy 21 because there are three chromomose -21 rather than two.
There are 46 chromosome in a normal human being which constitutes 23 pairs of chromosome. However, a person suffering from down syndrome has 47 chromosome with an extra chromosome -21.
Which is a type of passive transport?
endocytosis
diffusion
gap junction
exocytosis
Answer:
The answer is Diffusion.
Explanation:
Passive transport is a movement of biochemical, atomic or molecular substances through cell membranes without the need for energy overload, while diffusion is an irreversible physical process in which atoms or molecules move from a high region concentration to an area of low concentration, where said process does not require energy input, is frequent as a form of cell exchange.
Hailey loves to play volleyball. She has the best block and spike on her team. Which of the following statements is most likely true, given her ability to jump, block, and spike so well?
A. She has a high percentage of fast-twitch fibers in her arms and legs.
B. She has a high percentage of slow-twitch fibers in her arms and legs.
C. She has a high percentage of fast-twitch fibers in her arms, but a high
percentage of slow-twitch fibers in her legs.
D. She has a high percentage of slow-twitch fibers in her arms, but a high
percentage of fast-twitch fibers in her legs.
Answer:
the answer is A
Explanation:
because she can jump well so that means she has high amounts of fibers in her legs as well as her arms scince she can block well too.
Prokaryotes are found in
Answer:
both Domain Archaea and Bacteria .
Explanation:
The DNA in prokaryotic cells is in the cytoplasm. Prokaryotic cells are found in single-celled organisms.
What scientists are credited for the events described in the development of the cell theory
Answer:
Matthias Schleiden, Theodor Schwann and Rudolf Virchaw.
What body system are involved when you sit down to do your homework.
Answer:
- Integumentary system (your skin touches your clothes and then the chair, protecting your internal organs)
- Muscular system (you need your muscles to flex your legs onto the chair)
- Nervous system (your brain needs to voluntarily tell your muscles to sit down)
- Skeletal system (your muscles need to control your bones to put them on the chair)
The coordination of various body system helps organisms to perform various functions. As in case of doing homework while sitting down, the systems involved are integumentary system, nervous system, muscular system and skeletal system.
What are different body systems?Body systems involved in the coordination of daily activities. This system can be of many types depending upon the type of cell and activity.
There are following body systems:
Skeletal system.Muscular system.Nervous system.Endocrine system.Cardiovascular system.Lymphatic system.Respiratory system.Digestive system.Urinary system.Reproductive system.The system involved in doing homework while sitting are integumentary system to feel the objects, nervous system to remember the material, muscular system for flexing and skeletal system to provide support by bones.
Thus, these were the listed body systems required for the given scenario.
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The problematic model of the universe describes the earth as
Answer:
The Ptolemaic model of the universe describes the earth as at the centre,stationary with planets that rotate around it