Answer:
The Spinal Cord Transmits Signals to and from the Brain and Commands Reflexes The spinal cord is an elongated cylinder of neuron cell bodies, bundles of axons and other cells, protected by connective tissue and bone.
Explanation:
It connects to the brain at the medulla oblongata and runs down the vertebral column, the hollow tunnel enclosed within the vertebrae of the spine. The spinal cord is part of the central nervous system and serves as a kind of superhighway. Sensory information and motor commands travel up and down, heading to and from the brain. These signals speed in and out of the spinal cord via spinal nerves—the “on-ramps and off-ramps” that branch out to supply the limbs, torso, and pelvis. Some incoming signals demand a simple, immediate response. The spinal cord can shoot out a reflex command without bothering the brain.
Human blood consists of blood groups A, B, and O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called?
Answer:
Blood group AB
Explanation:
Which type of scientific model would be best for showing how our climate may change over the next fifty years?
1. Mathematical model
2. conceptual model
3. Physical model
Answer:
it will have taken hundreds of scientists many years to build and improve; ... is just an extension of weather forecasting, but focusing on changes over ... It remains one of the great mathematical challenges
Explanation:
Sporopollenin, found in the _____, protects the pollen grain against UV radiation, dehydration, and pathogen attack.
Answer: Exine of pollen grain
Explain the physiology of normal regulation of temperature, blood pressure, pulse, oxygen saturation, and respirations.
At the most basic level, many of the questions biologists ask have to do with ____? Question 1 options: cell physiology organization cell structure meaning of life
Answer: The answer is B:organization.
Explanation:i did the test
Based on the definition in the video, what
does "monomer" mean?
Sooo, my dad told me to clean the garage. I started but out of nowhere there 2 or 3 wasps in my garage, and I'm terrified of wasps that close to me. And If I dont finish the garage by time he gets home I'm in big trouble. What should I do??????
Answer: Wasps are not friendly
Explanation: Tell your father that you're "scared of wasps and I'll clean the garage later when the wasps go away."
b. Write down the major functions of blood circulatory system.
Answer:
The circulatory system is responsible for many functions that we perform.
it transports oxygen and nutrient throughout the human body.
The blood carries useful substances to the cells and takes away the waste products of the cells, which include urea, carbon dioxide and other metabolic wastes.
blood carries white blood cells and platelets, which help protect the body by clotting wounds and fighting off pathogens.
Hope this helps (●'◡'●)
What are the differences among the five biogeochemical cycle,particularly on the roles organisms play in them?
Answer:The most important biogeochemical cycles are the carbon cycle, nitrogen cycle, oxygen cycle, phosphorus cycle, and the water cycle. The biogeochemical cycles always have a state of equilibrium
Explanation:
Contrary to energy flow, matter, the building block of which organisms are made, flows through an ecosystem in several cycles, from one organism to the next and from living things to the abiotic environment and back.
What are biogeochemical cycles?
The flow of nutrients and other elements between biotic and abiotic forces is referred to as "biogeochemical cycles." The words "bio" and "geo," which refer to the biosphere, "geo" and "chemical," which refer to the elements that flow through a cycle, are the roots of the phrase "biogeochemical."
Atoms make up the preserved stuff that exists on Earth. Since matter cannot be generated or destroyed, it is recycled in a variety of ways throughout the earth's system. The remainder of the elements are present in a closed system, and the earth receives energy from the sun that is reflected back as heat. Major components include:
CarbonHydrogenNitrogenOxygenPhosphorusSulfurThe biotic and abiotic parts of the ecosystem recycle these substances. The abiotic elements of the ecosystem are the lithosphere, hydrosphere, and atmosphere.
Therefore, contrary to energy flow, matter—the building block of all living things—moves through an ecosystem in a variety of cycles, from one creature to the next and from the abiotic environment to the living ones and back again.
Read more about biogeochemical cycles, here
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why do populations have variaton in certain traits
Answer:
Populations have variation in traits due to random mutation, crossing over and environmental conditions.
Answer:
the answer is Different individual have different alleles.
Hope this answer correct :)
How can society best use scientific research on climate change?
O A. To create environmental jobs
B. To gain global power
C. To make informed decisions
O
D. To block capitalist ventures
how does carbon dioxide in the atmosphere affect oceans and marine life?
Answer:
It interacts the detirment of marine ecosystems.
Explanation:
CO2 concentrations drive rising temperatures and acidification. The rising concentration of carbon dioxide in the atmosphere is driving up ocean surface temperatures and causing ocean acidification. Although warming and acidification are different phenomena, they interact to the detriment of marine ecosystems.
Answer:b
Explanation:
You want to determine if a new diet medication will help rats to lose weight. What is the dependent variable? * the rats weight loss diet medication the food
Answer:
the rats weight loss
Explanation:
The dependent variable would the weight of the rats.
The dependent variable is the variable whose value is dependent on another variable during an experiment. It is the actual variable set out to be measured or tested by researchers. The effect of the manipulation of the independent variable is measured on the dependent variable.
Hence, in an experiment aimed at determining whether a new diet medication will help rats to lose weight, the weight loss by the rats would be the dependent variable.
Number of cells in the plant kingdom ?
Explanation:
Hey, there !!
Your question is though because plants are both multicellular and unicellular.
So, let me give you a little idea from whatever i have known.
Inside plant kingdom, there are three divisions,
Thallophyta = composed of mostly unicellular cells.Bryophyta = composed of multicellular cells.Pteridophyta = composed of multicellular cells.These are the information. but if its about type of cells, there are various type of cells such as xylem cells,phloem cells, parenchyma cells, collenchyma cells etc.
Hope it helps..
in a lab investigation one group of students measured the temperature at which various substances boiled. Their results are listed imf the table.
Answer:
ethanol
Explanation:
Each of the following is an endoplasmic reticulum function except: _______
a. peptide folding.
b. the export of protein that cannot be folded into the cytoplasm for destruction.
c. addition of carbohydrate to proteins to make glycoproteins.
d. the assembly of multimeric proteins.
e. All are endoplasmic reticulum functions.
Answer: Option E.
All are endoplasmic reticulum functions.
Explanation:
All are function of endoplasmic recticulum because
Endoplasmic recticulum is a membrane organelle that consists of two subunits, rough and smooth endoplasmic recticulum found in eukaryotes that formed flattened sacs within the cytoplasm of eukaryotic cells which syntyensises proteins, lipids and steroids, it metabolised carbohydrates by adding it to protein , help to control the concentration of calcium in the body,it detoxifies drugs, attached protein on receptor cells, assemble multimeric proteins e.t.c.
The endoplasmic recticulum comprises of two subunits which are rough and smooth endoplasmic recticulum. The major differences between rough and smooth endoplasmic recticulum is that smooth do not have RIBOSOMES and it produces lipids and rough have RIBOSOMES and produces proteins.
What is the SI unit for measuring weight?
Answer:
The SI unit for measuring weight is newtons
Explanation: The unit of measurement for weight is that of force, which in the International System of Units (SI) is the Newton. For example, an object witha mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.
Explain how the body can use local and long-distance signaling to direct blood flow to or away from specific organs or tissues.
Answer:
Exchange of Gases, Nutrients, and Waste Between Blood and Tissue Occurs in the Capillaries. Capillaries are tiny vessels that branch out from arterioles to form networks around body cells.
Explanation:
Fill in the blanks.
1.
_______ live on the blood or tissue of other organisms.
2. The type of teeth seen in _______ are usually broad and flat.
3. Some animals have specialized cells that absorb food, break it down internally, and pass the
nutrients to other cells in a process called _____
4. _____ have some tissues such as cell walls, which require special structures like rumen to
break down in the digestive system.
5. Gas exchange involves the absorption of _____ into the bloodstream and the release of CO2
waste
6. Aquatic animals have specialized structures called ______ that allow for oxygen to be
absorbed into the bloodstream directly from water as it passes through.
7. Insects typically have ______ circulatory systems.
8. Ammonia must be converted into urea in the_______ to be excreted later in mammals as urine.
Answer:
Parasites
herbivores
phagocytosis
Plant
oxygen (O2)
gills
open
kidneys
Single-loop circulatory systems have one direction of blood flow. Typically in fish, oxygen is absorbed in the gills, flows in blood to the body organs, and back to the heart, which pumps it directly back to the gills. In double-loop circulatory systems, the heart has multiples of each chamber. Part of the heart pumps blood to the lungs, to get oxygen. This blood flows back to a different chamber where it then gets pumped to the body. Once its oxygen has been used up, it goes back to the heart to be pumped all over again to the lungs.
Freshwater animals have lower water and higher salt concentrations than the environment in their cells. This means water constantly tries to diffuse into the animals, which can bloat them. They have special cell processes that remove extra water.
Explanation:
PF
Explain the strategy used by Sargon to conquer the Sumerian city-states. Why was this strategy successful?
Answer:
military strategies and cultural assimilation.
Explanation:
Sargon started his career in the Sumerian city-state of Kish as an official who eventually murdered the King of the city-state and seized control of it. Sargon raised an army and with sophisticated military techniques stormed through Mesopotamia to build an empire, became the first emperor of the region. he built the capital city of Akkad and despite their difference, Akkadian adopted Sumerian culture. This cultural assimilation of the conquered people has helped them to adjust better in the large empire.
Answer:
The strategy used by Sargon was to elevate a military army strong enough to concur the Mesopotamia. Which he later became the emperor of.
A scientist is testing how caffeine affects people’s sleep. She asks one group of people to drink one can of Coke before bed. She asks a second group of people to drink one cup of water before bed. Over a period of one month, she determines that the Coca Cola drinkers slept 45 minutes less per night than the water drinkers. What is the INDEPENDENT VARIABLE?
Answer:
The type of drink with different caffeine contents.
Explanation:
When conducting an experiment, two variables are looked out for, they are: independent variable and dependent variable. Independent variable refers to the variable being controlled or altered in the experiment in order to induce an effect in the dependent variable, which is the variable being measured. The outcome of the dependent variable is dependent on the input or independent variable.
In this question, the scientist is testing how caffeine affects people's sleep. She uses different drinks i.e. Coca-Cola and water with different caffeine contents to test out it's effect on the time of sleep people in the different groups will have. Therefore, the type of drink is the INDEPENDENT variable because it is being changed to test an effect on the dependent variable. The amount of time of sleep is what is being measured, hence it is the dependent variable.
How might you model the relationship between a tomato plant and the hornworm caterpillar?
Answer:
This model can be called a parasitic relationship
Explanation:
A parasitic relationship is a form of relationship/interaction between two organisms in which one organism (called parasite) lives at the expense of the other organism (called host); causing harm or death to the host.
A hornworm caterpillar feeds on the upper part of tomato plant leaves, causing harm to the plant in the process. Hence, the tomato plant is the host while the hornworm caterpillar is the parasite.
Name for a huge sheet of ice covering many square miles
A threatened species is a species that is likely to become extinct if protective measures are not taken immediately.
True
False
Answer:
false
Explanation:
i guess that is an endangered species but a threatened species is one whose habitats or survival is in danger mostly due to human factors like poaching and encroachment I guess
Which structures are highlighted? Which structures are highlighted? duodenal glands Peyer's patches (aggregated lymphoid nodules) submucosa gastric glands
Answer: (Note: You will find the image with the highlighted structure in the attached file)
Peyer's patches (aggregated lymphoid nodules)
Explanation:
Peyer's patches are anatomical regions located under the mucosa of the gastrointestinal tract, specifically in the lamina propria of the thin intestine. These patches are nodules or cumulus of lymphatic tissue and other accessory cells, and this is why they represent a huge part of the mucosa´s immunity system.
Peyer's patches belong to the group of lymphoid tissue associated with the intestine, composed of lymphoid follicles distributed along the gastrointestinal tract.
A lymphoid follicle is a cumulus or aggregate of lymphoid cells that do not have a well-defined structure nor organization. In general, these follicles are isolated from each other in the intestine. But in the terminal ileum (The last portion of the thin intestine) they get so close that they might form a plaque. The Peyer´s patches are formed principally by lymphocytes B that synthesize immunoglobulin A, which has an important role in immunity.
Describe the interaction between the farmer, the soil, his corn plants, and the Sun. How does energy flow?
Answer:The farmer uses farm machinery to plot the soil and plant the corn. Energy from the Sun Is stored by the corn plants. When the farmer, animals, or other people eat corn, they gain the energy captured by it.
Explanation:Because it's easy knowledge
Which part of an atom is mostly empty space? nucleus proton cloud electron cloud neutron
Answer: electron cloud
Answer:
electron cloud
Explanation:
Comparing amino acid sequences in proteins has been used to determine the relatedness of organisms. Below is a graphic that shows the amino acid sequence differences between different organisms for a protein keratin. Changes in amino acid sequences are known to cause changes in structure of proteins. Species A Species B Species C Species D Species E Species A 4 11 19 1 Species B 12 18 5 Species C 8 10 Species D 20 Species E Part A. Consider species A, D, and E. Using the data provided, describe how the structures of their keratin proteins would compare. Part B. Keratin is made up of about 450 amino acids. Determine the similarity in percentages between species A and B, A and C, and B and C. Explain how amino acid sequences can be used in determining how closely related two species are. Part C. Based on this data, predict which two species would be more closely related to one another. Part D. Justify your predictions to part C.
Answer:
A) Species A and E are more closely related than either species are related to species D.
B) Between A and B = 99.1%
Between species A and C =97.5%
Between species B and C = 97.3%
Similarity in amino acids sequence reflects similarity in DNA sequence
C) Species A and E are most closely related
D) Species A and E have the most similarity in amino acid sequence, and hence DNA sequence.
Explanation:
A) The amino acid sequences of the protein, keratin, in species A and D has a difference of about 19 whereas species A and E have a difference of only 1. Therefore, it means that keratin in species A and D will have differences in structure whereas between species A and E, they would have almost the same structure.
Also, species D and E have a difference of 20 in their amino acids sequence, therefore, the structure of keratin in both species will have differences in structure.
B) Similarity between A and B:
450 - 4 = 446
In percentage: 446/450 × 100% = 99.1%
Similarity between A and C:
450 - 11 = 439
In percentage: 439/450 × 100% = 97.5%
Similarity between B and C:
450 -12 = 438
In percentage: 438/450 × 100% = 97.3%
The sequence of DNA of species determines their amino acid sequences because information in DNA is transcribed to RNA which are then used to make proteins. Therefore, if a species are very closely related, they are expected to have very similar genetic sequences and thus proteins too. This is reflected in similarity between amino acid sequences in their proteins.
C). Species A and E are most closely related.
D) Species A and E have only a single difference in their amino acids sequence for Keratin. This translates to about 99.7% similarity which is the highest among all the species compared. Therefore, species A and E are most closely related.
Why do dominant traits tend to be seen more frequently in a population? A. There are more dominant alleles. B. Organisms only need one copy of dominant to exhibit the trait. C. Recessive traits show up more in populations.
Answer:
I think is c hope this help
Answer:
[tex]\boxed{Option \ A}[/tex]
Explanation:
Dominant traits tend to be seen more frequently in a population because there are more dominant alleles. If it seems like in a community that the dominant traits show up more then this means that the dominant alleles are more.
Carnivores competing for resources may defend their territory. If a species cannot compete very well it could become extinct or move out of the territory. Another thing that could happen is that the competing species could consume all the resources and it could affect the whole food web and ecosystem. It could affect the other species in the ecosystem.
a. True
b. False
Answer:
The correct answer is option A.
Explanation:
All living things need to compete to survive so that they can pass their genes onto the next generation, so yes the carnivores do defend their territory if there is a threat or a lack of resources.
It could also impact other species and the ecosystem since each one is connected. If the competing species consume all the resources then that species is in danger of extinction which in turn affects another species that feed on the first species.
So the answer is true.
I hope this helps.