Answer:
Loss of the structural framework of the brain.
Explanation:
Damage to oligodendrocytes in the central nervous system leads to the loss of the structural framework of the brain. oligodendrocytes produce the insulating sheath of axons and we know that axons are the nerve fiber that conducts electrical impulses away from the neuron's cell body. Axons are the primary transmission lines of the nervous system that carries impulse throughout the body so if the oligodendrocytes are damaged then our brain did not work properly.
If oligodendrocytes are damaged, the myelin sheaths around axons can be destroyed. This can lead to a loss of the structural framework of the brain, as the axons will no longer be properly insulated. Hence option C is correct.
Oligodendrocytes are glial cells in the central nervous system (CNS) that are responsible for myelinating axons. Myelin is a fatty sheath that surrounds axons and helps to speed up the conduction of nerve impulses.
The loss of the structural framework of the brain can cause a variety of neurological problems, including:
Reduced speed of nerve impulses. As mentioned above, myelin sheaths help to speed up the conduction of nerve impulses. Without myelin sheaths, nerve impulses will travel more slowly, which can cause problems with coordination, movement, and sensation.
Increased risk of seizures. Seizures are caused by abnormal electrical activity in the brain. When the myelin sheaths around axons are damaged, it can increase the risk of seizures.
Cognitive impairment refers to a decline in thinking and memory skills. Damage to oligodendrocytes can lead to cognitive impairment, as the axons will no longer be able to function properly.
Therefore, option C) loss of the structural framework of the brain is correct.
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Consider the following scenario:
A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations.
What is the main selective pressure in this scenario?
(1 point)
drought
leg length
insect population
fish population
There are two varieties in a population of squirrels: short tails and long tails. Long-tailed squirrels are better at jumping and balancing in trees. Scientists observe that over the span of 100 years, the proportion of the population with long tails increases from 10% to 60%. Which statement is most likely? (1 point)
The proportion of long-tailed squirrels may have increased due to increased food availability.
The proportion of short-tailed squirrels may have decreased due to decreased food availability.
The proportion of short-tailed squirrels may have decreased due to an increase in trees.
The proportion of long-tailed squirrels may have increased due to a decrease in trees.
1. What is the main selective pressure in this scenario?
fish population.
2. According to the question, option "A" is correct The proportion of long-tailed squirrels may have increased due to increased food availability.
What is selective pressure?In evolutionary theory, the effect on survival of a species of the sum of all elements, physical and behavioural, inherent and environmental especially as an inherited characteristic may marginally affect survival under the influence of these elements.
Thus, the option "D" and "A" is correct.
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Why is a shell considered to be biotic?
A shell is considered as biotic (living) because it is a hard, rigid covering of many animals such as snail, sepia, pila, turtles, sea urchins. A shell is protective outer layer of these soft bodied animals.
If an organism has a diploid number of 54, how many chromosomes will be in each of its gametes?
a. 54
b. 52
c. 27
d. 104
e. 108
There will be 27 chromosomes in each of its gametes.
• Meiosis is also called reductional division, in the process s-ex cells, that is, sperm and egg are produced, and each cell has the half number of chromosomes than its parent cells.
• In the given case, the organism is diploid with 54 chromosomes, that is, 2n = 54.
• Here n is the haploid number of chromosomes, in the given case, n = 27, that is, the haploid number of chromosomes is 27.
• Therefore, the sperm and egg cells have 27 number of chromosomes each.
Thus, the correct answer is option c, that is, 27.
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Is this active or passive transport?
Answer: Passive transport
Explanation: If the direction is from left to right, then it is passive. Passive transport is like unconscious, like osmosis. If I open my lunchbox and I have a peanut butter sandwich, the peanut butter smell (molecules) will naturally spread around and so someone standing next to you will smell it, and someone 3 seats away from you will smell it. Note that it is EVENLY spreading out, so after a while the person sitting 3 seats away from you will smell the peanut butter with a similar intensity as the person sitting next to you. Active transport is doing something forcefully. If the direction was right to left, then it would be active transport. :D
A scientist isolates a disease-causing particle. Which of the following properties would indicate that the particle is a virus and not a bacterium?
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The immune system is the body's defense against infectious organisms and other invaders. Your immune system works by recognizing the difference between your body's cells and alien cells, allowing it to destroy anything that could be potentially harmful. Active and passive immunity play an important role in keeping you healthy.
What is the difference between passive and active immunity? (SC.912. L.14.52)
A. Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune while naturally acquired passive immunity occurs during pregnancy, in which certain antibodies are passed from the maternal into the fetal bloodstream
B. Both passive and active immunity are interchangeable
C. Passive and active immunity are both 1st line of defenses
D. Passive immunity occurs when a person is exposed to a virus and active immunity occurs when the immunity is passed on through breast feeding
Answer:
The answer would be A
can someone please answer this question
Answer:
D) Can simple organic molecules form spontaneously in an oxygen-free atmosphere?
Explanation:
can you live without a spleen
Answer:
Yes
Explanation:
Although the spleen is an important part of the Immune system, you can survive without it, because the liver can also have the same functions of a spleen. Although the liver can take over these functions it cant prevent all the bacteria that a spleen can prevent.
How does a single fertilized egg cell develop into all the different cells of your body? Use cell division and differentiation in your answer.
Answer:
Once an egg is fertilized by a sperm, a zygote is formed. The zygote divides into multiple cells in a process known as cleavage, triggering the beginning of embryonic differentiation. Cells in these three layers will give rise to different parts of the organism. The endoderm eventually becomes the gut.
Explanation:
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A zygote is formed when an egg is fertilized. The zygote divides into multiple cells in a process known as cleavage, triggering the beginning of embryonic differentiation.
What is Differentiation?This is the process in which cells acquire different structure and function from one another to form distinct cell types.
When a zygote is formed, cell division takes place which helps to trigger differentiation of cells.
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in complete sentences compare in depth neutrophils, eosinophils and the basophils.
Compare their functions
Compare their structures
Compare how they look when they are stained
Compare their counts
Answer: Neutrophils have a two-lobed or bilobed nucleus, while eosinophils have bean-shaped nucleus and basophils have a multi-lobed nucleus. The lifespan of neutrophils is 5-90 hours, whereas eosinophils lifespan is 8-12 hours and that of basophils have a life span of 60-70 hours. functions- All the granulocytes present in white blood cells play their role in fighting against pathogens and in destroying them, where neutrophils vital role is in engulfing the foreign or toxic particles through phagocytosis; Eosinophils are the first one in triggering the inflammatory response during allergic disorders; and Basophils prevents the immediate blood clotting, as it contains heparin (anticoagulant) in the body. structures- Neutrophils have a two-lobed or bilobed nucleus, while eosinophils have bean-shaped nucleus and basophils have a multi-lobed nucleus. ... Neutrophils make up to 40-75% of the total white blood cells, while eosinophils mark their presence up to 1-6% and basophils are up to 0.5-1% of the whole white blood cells. stained- Neutrophils:Neutrophils are stained in natural pink color. Eosinophils: Eosinophils are stained in brick red in acidic stains. Basophils: Basophils are stained in dark blue in basic stains. counts- Neutrophils are one of the primary types of white blood cells, that evokes the immune response against any foreign particle attack in the body. Eosinophils are another type of white blood cells, that helps in fighting against disease and allergies. Basophils are such white blood cells that help to diagnose the specific health problems like autoimmune disease or other blood disorder, etc. in the body.
Explanation:
Guys, please take a look at this. I know that the answer is NOT A.
Answer:
C
Explanation:
There are 4 zeros, which fits the "at least three" criteria.
X plus a number means the root is negative on the graph, so all roots are negative.
(x+3) occurs twice meaning it has a multiplicity of 2.
What is the characteristic of the sympathetic division of the autonomic nervous system?
A) Stimulates Digestion
B) Dilates the Bronchi
C) Slows the heartrate
D) Converts Glucose to Glycogen
All of the following are actions one may participate in if they are seeking group therapy except __________.
A. describing problems
B. sharing experiences
C. providing emotional support
D. setting goals for the group
Answer:
D
Explanation:
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Each tissue and organ in the body has a function, and its metabolism is adapted to its function. For example, one tissue may synthesize fatty acids that are stored and oxidized by another tissue. Classify each phrase as describing the liver, adipose tissue, muscle tissue, the brain, or blood.
my brain can't process this lol
The brain is the tissue in the human body that cannot use fatty acid or glycogen as energy source.
Adipose Tissue:
These tissue store fat and use fat as the energy source.
Muscle:
It generate ATP as energy to provide energy for contraction.
Blood :
It transport nutrients and other metabolic substances between tissue and organ.
It process the
Brain:
It is the organ that cannot use fatty acid or glycogen as energy source,
Liver:
Use fatty acid, glucose or ketone bodies as fuel to generate energy.
Therefore, the brain is the tissue in the human body that cannot use fatty acid or glycogen as energy source.
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An organism and its taxonomic key are shown below.
Taxonomic Key
Step Characteristic Organism
1 8 legs --- Go to step 2.
More than 8 legs --- Go to step 3.
2 One body region --- Go to step 4.
Two body regions --- Go to step 5.
3 One pair of legs on each body segment ---- Centipede
Two pairs of legs on each body segment ------ Millipede
4 Less than 1 millimeter long --- Mite
More than 1 millimeter long --- Tick
5 Claw-like pinchers --- Go to step 6.
No claw-like pinchers --- Spider
6 Long tail with a stinger --- Scorpion
No tail or stinger --- Pseudoscorpion
Which organism is shown in the image?
A. Millipede
B. Spider
C. Scorpion
D. Tick
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In the following sentence, luster probably means
“for example, diamonds are a clear, very hard crystal with a shiny luster, while talc has a very soft texture and is a whitish gray color.”
A. dullness
B. hardness
C. transparent
D. shining by reflecting light
Answer:
D.
Explanation:
Luster means a gentle sheen or soft glow, especially that of a partly reflective surface. The sentence says "a shiny luster," and diamonds are shiny and reflective, so it is most likely D.
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Look at the Density of Substances table. Which two substances from the table are buoyant in pure water?
A. silver and lead
B. lead and diamond
C. gasoline and ethyl alcohol
D. silver and diamond
Answer:
Silver and lead
Explanation: hope that helps
Why were Domains added to the classification system after the time of Linnaeus?
Answer: With the development of powerful microscopes, scientists discovered many single-celled organisms that didn't fit into any of Linnaeus' kingdoms. As a result, a new taxon, called the domain, was added to the classification system.
Explanation:
Scientists think that dolphins and whales share a more recent common ancestor than sharks and whales. Which feature of these animals most likely led scientists to think this?
A. anatomical structures
B. feeding behaviors
C. habitat locations
D. ecosystem roles
Answer:
a. animatical structure's
Explanation:
Plzzzz help me with this (the words to fill the blank are at the top)
Answer:
The organisms and environments that make up a community, called an *ecosystem*, are constantly changing. Sudden and violent events, such as *storm surges or tornadoes* and *put the second option on whatever you choose first*. *Flooding* results when rainfall exceeds the holding capacity of a drainage system. *Hurricanes* are storms that develop over warm water. Tree's and plants are *uprooted* from the ground. By studying the histories of violent storms, *meteorologists*...
Explanation:
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what do mature red blood cells lack, and as a result cannot produce protein or reproduce?
- mitochondria
-cell membrane
-sodium channels
-nuclei
Answer:
4th answer nuclei
Which of these are present in both woody and herbaceous stems? (Select all that apply.)
A. xylem
B. rings
C. seedlings
D. phloem
Answer:
xylem & phloem are present in both woody and herbaceous stems
Explanation:
Vascular system is present in both, woody and herbaceous stems. Thus, option A, and D are correct.
What are vascular tissues?In vascular plants, A tissue which is complex in nature, formed by more than one type of cells are called as vascular tissues. Two main types of vascular tissues are:
XylemPhloemThe transportation of water from roots to stem and leaves of the plant is carried out by xylem. Xylem consist of tracheids and vessel elements, which have different characteristics, but both play significant role in transportation of water and nutrients.
The soluble organic compounds synthesized during photosynthesis in the plants are transported by another vascular tissue called as phloem, in process called translocation. It consists of sieve elements, parenchymal cells, fibers, and sclereids.
Therefore xylem and phloem are present in both, woody and herbaceous stems.
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how large and power full can a tsunami be, put in your own words
Answer:
Well think of it like this a tsunami can destroy cities killing hundreds maybe even thousands they can get as tall as 150+ feet and not to mention leave millions of dollars in damage.
Explanation:
Answer:
Explanation: Hey, so when they hit land, most tsunamis are less than 3 meters high, but in extreme cases they can exceed 30 meters near their source. A tsunami can hit shore as a rapidly rising tide or wall of turbulent water, and a large tsunami can flood many meter of land. Hope it helps x.
Which of the following does the frog represent? A. Primary producer B. Primary consumer C. Secondary consumer D. Decomposer
Answer:
Primary Consumer
Explanation:
Because it eat directly from the plants, which are primary producers
what is noun ?what is verb?what is full from of cpu?
Answer:
Noun:a word (other than a pronoun) used to identify any of a class of people, places, or things ( common noun ), or to name a particular one of these ( proper noun ).
Verb: a word used to describe an action, state, or occurrence, and forming the main part of the predicate of a sentence, such as hear, become, happen.
Central processing unit (CPU), principal part of any digital computer system, generally composed of the main memory, control unit, and arithmetic-logic unit. ...
Answer:
NounNoun is a naming word .
Verbverb is an action word .
The full form of CPU is central processing unit .hope it is helpful to you
What does photosynthesis produce?
Answer: cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen
Explanation:
i hope this help
50. The flow chart below shows how a metamorphic rock can change into a
sedimentary rock. Which of these processes would be the correct label to
replace the question mark?
Metamorphic rock
Sediment
Sedimentary rock
Erosion
?
A) Cooling
B) Deposition
C) Melting
D) weathering
Answer:
The process that would be the correct label to replace the question mark in this question is:
B) Deposition
Explanation:
Deposition takes place after erosion of sedimentary rock. At this stage, the eroded sedimentary rocks build up under high pressure heat, wind, ice, water, and other natural forces to originate the rock formation cycle once again. Naturally, after deposition, the igneous rocks, which have then layered up sedimentary rocks to become metamorphic rocks.