The humans releasing carbon dioxide, tapeworms entering a human’s intestines or remora sharks attaching themselves to whales are examples of mutualism, parasitism, and commensalism.
What is mutualism?In mutualism, humans release carbon dioxide that plants need; plants provide oxygen that humans need as both species benefit from the interaction. In parasitism, tapeworms enter a human’s intestines through contaminated water and steal nutrients from the human one species benefits at the expense of the other.
In commensalism, remora sharks attach themselves to whales by way of an adhesive disk on their dorsal surface. They then feed on the scraps from the whale’s meals as one species benefits from the interaction, while the other is neither helped nor harmed.
Therefore, humans releasing carbon dioxide, tapeworms entering a human’s intestines through contaminated water and stealing nutrients from the human or remora sharks attaching themselves to whales are examples of mutualism, parasitism, and commensalism.
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15. The human body has
layers of
make up the cell membrane.
The cell membrane is composed of two main layers called phospholipid bilayer. Each layer is made up of phospholipids, which are a type of lipid molecule.
These phospholipids have a hydrophilic (water-loving) head and a hydrophobic (water-fearing) tail. The hydrophilic heads are attracted to water, while the hydrophobic tails repel water.
The phospholipid bilayer consists of two layers of phospholipids arranged in such a way that the hydrophilic heads face the outside and inside of the cell, while the hydrophobic tails are sandwiched in between. This arrangement creates a barrier that separates the inside of the cell from the outside environment.
In addition to phospholipids, the cell membrane also contains other molecules such as proteins, cholesterol, and carbohydrates. Proteins are embedded within the phospholipid bilayer and serve various functions, such as transporting molecules across the membrane or acting as receptors for signaling molecules.
Cholesterol molecules are interspersed between the phospholipids and help maintain the fluidity and stability of the cell membrane. Carbohydrates are attached to proteins or lipids on the outer surface of the cell membrane and play a role in cell recognition and communication.
Overall, the cell membrane is made up of phospholipids, proteins, cholesterol, and carbohydrates, all working together to regulate the passage of molecules in and out of the cell and to maintain the integrity and functionality of the cell.
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why does the central part of a red blood cell appear paler than the outer part when viewed under a light microscope
Answer: The central pale area of each red blood cell is due to the concavity of the disc.
Explanation:
The absence of a nucleus and light effect makes the central part of a red blood cell appear paler
The red blood cells ( RBC )does not have a nuclei like every other cells contained in the body. therefore when viewed under a light microscope the outside of the red blood cell will appear brighter ( pink ) while the center of the red blood cell will appear pale ( whitish ). also the the light intensity from the light microscope contributes to the pale nature of the central part of the red blood cell.
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plate boundaries focus....
Answer:
May be your question is incomplete....Explanation:
May be your question is incomplete and please marks me as brainliests...Considering zoo populations of lions, how can parentage information be helpful?
Answer:
By Budhan Pukazhenthi, SCBI Scientist
The International Union for Conservation of Nature’s Red List of threatened species, often considered the world authority on wildlife populations, lists African lions as vulnerable. “Vulnerable” is a classification that is not as extreme as “endangered,” “critically endangered” or “extinct,” but denotes that wild lion populations throughout the world are on the decline. As a result, it is important that healthy lion populations be managed in zoos as hedge against extinction.
Explanation:
The importance of getting to know the parentage information is to avoid inbreeding events as much as possible and increase genetic diversity -heterozygosity-.
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There are many challenges associated with captivity, and one of them is related to maintaining genetic diversity in the population, following the ex-situ conservation goal.
When selecting the animals to be kept in captivity, it is significant to consider a few aspects concerning genetic diversity maintenance. The main goal is to prioritize the original genetic material. Introducing a few animals of a species into the zoo might be considered an example of the founder effect. Just a pregnant female is enough for it to occur. And the most significant problem associated with this event is the loss the genetic diversity or variability. When breeding animals in captivity, there is a high risk of losing some genes and fixating others due to inbreeding.
An increase in inbreeding events means a significant reduction in genetic diversity, leading to a reduction in the fitness of individuals.
Inbreeding can be defined as mating events between related individuals. These events lead to an increase in the frequency of h0m0zyg0us individuals and a decrease in heter0zyg0us individuals. It means the loss of genetic variability. So, inbreeding is going on whenever the zygotes are formed by gametes proceeding from biologically related individuals.
In general, inbreeding occurs in small isolated populations and is closely related to the loss of aptitude. A reduction in population fitness might eventually end in its extinction.
In zoos, the importance of getting to know the parentage information is to avoid these inbreeding events as much as possible and try to enhance diversity -heterozygosity-. Knowing genetic information about parental animals is an important tool to manage crosses, avoiding genetic problems, and increasing genetic diversity.
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True or False
The constants are analogous to the contestants of a sporting event
Answer:
True
Explanation:
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Which of the following describe ecosystem services?
I. Farmland
II. Pollution
III. Seed disbursement
La unión de aminoácidos forma una macromolécula llamada
help plz i will mark the brainlest plz anyone help
A scientific hypothesis should be specific and demonstrate the relationship between the independent variable and the dependent variable. Which of the following is the best hypothesis written in the correct format? Question 5 options: Cars on different surfaces skid at different speeds. If surface type affects friction, then cars on concrete will skid slower than cars on ice. If cars on concrete skid slower on ice, then concrete is the best surface I think a car on the concrete will skid the slowest.
Answer:
If surface type affects friction, then cars on concrete will skid slower than cars on ice.
Explanation:
This answer choice addresses both the independent and dependent variables. Surface type is the Independent variable, and the dependent variable is the speed the car skids.
hope this helped!
If surface type affects friction, then cars on concrete will skid slower than cars on ice. This statement is correct and the correct hypothesis.
What is a scientific hypothesis?
A scientific hypothesis is a theory that offers a speculative explanation for a phenomenon or a specific group of related events that have been observed in the natural world. The capacity to be supported or disproven by observation and experimentation are the two main characteristics of a scientific hypothesis, and they are embodied in an "If...then" statement that summarises the notion.
In the middle of the 20th century, British philosopher Karl Popper, who was of Austrian descent, established the idea that a scientific theory might be both falsified and tested.
The scientific method, the strategy used by scientists to try to comprehend and evaluate theories regarding natural events, includes the formation and testing of hypotheses. The process of developing a hypothesis is commonly referred to as creative and is based on prior scientific understanding, intuition, or experience.
Therefore, the correct hypothesis is the statement, that if surface type affects friction, then cars on concrete will skid slower than cars on ice.
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Read the paragraph below from the section "A global hub of knowledge".
He argues that Western Europe was better placed than any other region to profit from the vast
flows of goods and ideas within the emerging global system of exchange. They used their
position to create the birth of modern science and the European Scientific Revolution. This
revolution was, in part, a response to the flood of new ideas pouring into Europe as a result of its
expanded contacts with the rest of the world.
How does the last sentence contribute to the development of the MAIN idea of the paragraph?
(A) The sentence explains the problem that caused the revolution.
(B) The sentence describes the solution to the problem that caused the revolution
(C) The sentence describes the revolution as the effect of a combination of different factors.
(D)
The sentence contrasts the revolution as it occurred in two different areas of the world,
The last sentence contributes to the development of the MAIN idea of the paragraph because it describes the revolution as the effect of a combination of different factors.
The fragment presented describes the privileged situation of Europe that allowed it to interact with the other regions of the world easily due to its location.
Europe remains at the "center" of market and exchange flows between Asia, America, and Africa. This dynamic caused it to be influenced by other cultures, which allowed it to develop scientific revolutions.
Accordingly, the last sentence of the fragment serves to illustrate the result of the favorable location conditions that Europe had concerning the other regions.
So the correct answer is C because it illustrates the main effect of a combination of different factors.
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Which of the following describes an example of molecular movement across a membrane through active transport?
Answer: Hydrocarbons enter the cell by dissolving in the lipid bilayer of the membrane.
Explanation:
Answer:
Channel proteins bind with extracellular solutes and release them inside the cell.
Explanation:
seems right
Acetylcholine is an important chemical signal in the nervous system. Once aceylcholine is released, it is quickly broken down into other chemicals because of the activity of cholinesterase. Cholinesterase is which of the following? *
a lipid
an organelle
an enzyme
a hormone
2. What is the pH of a very acidic solution?
a:5
b:10
c: 1
d:14
Which factor can potentially increase a teenager’s alcohol use?
Answer:
A teenager's decision to drink alcohol can be influenced by: early introduction to alcohol. exposure to adult binge drinking or alcohol dependence. access to alcohol from parents and others.
What is an analogous structure?
A. a structure that has the same form but
different functions like an arm, fin, and wing
B. a structure that has the same function but
different forms like the wing of a bee and wing of
a bat
C. a structure that used to serve a purpose but
does not have a purpose in modern species
D. a structure that is similar in all developing
embryos
7. What is the goal of materials engineering?
Answer:
The goal of materials engineering is to predict and control material properties through an understanding of atomic, molecular, crystalline, and microscopic structures of engineering materials
Which of these correctly demonstrates the biomolecule with its function?
A)
steroids; separate the cytoplasm from the environment
B)
waxes, prevents water loss and repels water
c)
triglycerides; make up sex hormones
D)
phospholipids, store energy
Answer:
B) Waxes, prevents water loss and repels water
Explanation:
Waxes, steroids, phospholipids, and triglycerides are types of lipids. All of them are made of Hydrocarbon chains that are hydrophobic.
Triglycerides (fats) - Storage molecules for the body's energy
Steroids - Sex hormones and cholesterol
Phospholipids - Cell membrane (Separates cytoplasm from the environment)
Therefore, Answer choice B) Waxes, prevents water loss, and repels water, is the only answer that correctly matches with the provided answers.
Why are biosphere reserves the best way of wildlife conservation
hope it helps
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PLEASE HELP!!!!!
Summarize the nervous system's influence on the respiratory system.
O It stimulates pathogen response.
O It controls muscle contraction.
It regulates heart rate.
O It regulates breathing rate.
Explanation:
It controls muscle contraction.
Need the answers due in a hour
Answer:
1) Description of coal:
2)Benefits of using coal for electricity
3)Negative consequences of using coal:
Explanation:
1)Coal is a black rock formed by decomposing organic material over millions of years.
2)Coal contains more energy and it is also cheaper than other fossil fuels.
3)Using coal releases more carbon dioxide than other fossil fuels and fosil fuel alternatives, causing damage to land, water and air.
Alien recipe virtual Arkansas
Answer:51
Explanation:
What elements make up carbohydrates?
A) Carbon, hydrogen, oxygen
B) Glucose and fructose
C) Carbon, hydrogen, nitrogen, oxygen
D) Sulfur, carbon, hydrogen
Carbon , Hydrogen and oxygen
Carbohydrates are a class of chemical compounds composed of carbon, hydrogen, and oxygen in 1:2:1 ratio, respectively.The lowest stratum of the atmosphere is the ______.
O stratosphere
Otroposphere
O mesosphere
troposphere
Explanation:
the troposphere is starting at ground level
What evidence contradicts the theory that moving two-ton stones was physically impossible for the Egyptians, and must have been done using alien technology?
Answer:
Archaeological evidence shows that Egyptians worked together to build the pyramids. Remains of quarries and ancient tools suggest that large slabs were created from rock beds. The slabs were placed on sleds and pulled to the building site. To make this process easier, men most likely poured oil on the roadway. This process is depicted in tomb paintings that date back to 1900 BCE.
Explanation:
name five substances found in caspular space
Answer:
Bowman's capsule encloses a cluster of microscopic blood vessels—capillaries—called the glomerulus, where wastes are filtered from the blood.
Explanation:
help me to answer my questions
Explain why the a single loop circulatory system is able to supply raw materials to cells as fast as the double – loop circulatory system.
Answer:
In the case of single circulatory systems, e.g. as in fish, the heart receives deoxygenated blood (also described as 'oxygen-poor blood') into the atrium of the heart and pumps it through the ventricle of the heart so that it continues onwards to the gills.
3a. Which paragraph is best illustrated by
the image?
How can you apply the scientific method to a problem?
Explanation:
make an observation
ask a question
from a hypothesis or a testable explanation
make a prediction based on hypothesis
test a prediction
iterate: is the results to make new hypothesis or prediction
Which is not accurate concerning plate tectonics?
a.Some continents are drifting apart
b.There are seismic activity at the margins of the crustal plates
c.The continents ride on crustal plates
d.The continents are fixed in position
Answer:
There are seismic activity at the margins of the crustal plates , I think
