Not all of the oxygen in the air is taken up by the lungs, and that the gases released when someone breathes out are heated to body temperature and saturated with water vapour. This results in the expired air having a larger water vapour content.
Why does expired air contain more oxygen?All of the oxygen in the air we breathe does not enter our lungs during the breathing process. The amount that is absorbed is little. Therefore, some oxygen is present in expired or exhaled air.
Since we don't consume nitrogen, the percentage of nitrogen remains close to 78%, but the significant difference is the rise in carbon dioxide. More or less 4% of the carbon dioxide and a larger percentage of water vapour than breathed air are found in exhaled air.
Water vapour makes up 0.02 to 0.04% of the air we breathe. Water vapour makes about 5.0 to 6.3% of exhaled air.
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Question about study of life
what would happen if the earth did not have an atmosphere?
Answer:
Without atmosphere life would not be possible as atmosphere protects us from harmful gases . We could not live without air present in atmosphere . In absence of the atmosphere , the earth would get so cold at night that we would not be able to survive .
Which of the following statements regarding a bacterium that is R+ is FALSE?
A) It possesses a plasmid.
B) R+ can be transferred to a cell of the same species.
C) It is resistant to certain drugs and heavy metals.
D) It is F+.
E) R+ can be transferred to a different species.
False statements regarding a bacterium that is R+ is F+.
Everywhere you look, you can find bacterium (plural: bacterium), which are typically free-living organisms made up of just one biological cell. They make up a sizable group of prokaryotic bacteria. Bacteria, which are among the earliest life forms to exist on Earth and are typically a few micrometers in length, are found in most of its environments. The deep biosphere of the Earth's crust, acidic hot springs, radioactive waste, and soil all support bacterial life. By recycling nutrients, such as fixing nitrogen from the atmosphere, bacteria play an important role in many stages of the nutrition cycle. The decomposition of dead bodies is a part of the nutrition cycle, and the putrefaction stage is brought on by bacteria. Extremophile bacteria offer the nutrients required to maintain life in the biological communities surrounding hydrothermal vents and cold seeps.
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What is a star apple?
Answer:
Ooh! Great Question, This is an incredibly yummy fruit which is an edible purple fruit with a star-shaped cross section. Looks good!
What’s the correct answer answer asap for brainlist
Answer:
B.
Explanation:
Interdependent relationships in biology are based on mutual dependence between organs and body systems. Most organs have a job (aside from the appendix and such) and they all work together to keep the body running. For example, the lungs introduce air into the bloodstream, but what would be the point if there was no heart to pump the blood? Your organs fully depend in eachother to be effective.
how have phostate minerals most affected human activity
Answer:
Explanation:
How have phosphate minerals most affected human activity? Using phosphate minerals in fertilizer allowed humans to grow more crops. The availability of rock and mineral resources has major effects on human activity.
A scientist is planning an investigation to better
understand how bumblebees fly. The scientist plans to
record slow-motion videos of bumblebees in flight to
better observe the motions of the wings.
Which type of scientific investigation does this plan describe?
A. Descriptive investigation
B. Experimental investigation
C. Comparative investigation
D. Theoretical investigation
SUBMIT
Answer: A. Descriptive investigation
Explanation:
The plan described in the scenario corresponds to a Descriptive investigation. The correct option is A.
What is a Descriptive investigation?
A descriptive investigation focuses on observing and describing phenomena or processes as they naturally occur.
The scientist plans to record slow-motion videos of bumblebees in flight.
By doing so, the scientist aims to capture detailed visual information about the motions of the bumblebee wings.
This approach allows for a closer and more precise observation of the wing movements, which may help in better understanding how bumblebees fly.
The goal of this descriptive investigation is to gather empirical data through direct observation.
Thus, the correct option is A.
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A ________ is a rigid layer that surrounds a plant cell, providing structural support.
A.
nucleus
B.
cell membrane
C.
cell wall
D.
chloroplast
Answer: C. Cell wall
The cell wall is a rigid layer that is found outside the cell membrane and surrounds the cell, providing structural support and protection. The central vacuole maintains turgor pressure against the cell wall.
Which of these levels of biological organization contains the other three?
A. Individual
B. Organ
C. Population
D. Organ system
A population contains other three. An organ forms an organ system the system forms an individual and many individuals forms population
Why is population a crucial issue?Population refers to all of the people who are present in a location at any given time. The population should be balanced with available means and resources because it is one of the key elements in maintaining environmental harmony.
A population is a subset of one species' members that lives in a certain area and, in sexually reproducing species, breeds with other individuals of the same species. For certain species, it is simple to define a population's geographic borders; for other species, it might be more challenging.
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Which factors give cellulose the ability to form long fibers with high tensile strength
Answer:poop
please give me brainliest
A Property of all living things. Not a property of all living thing.
can someone please awnser this for me I'll make you brainliest and give 5 stars
When the Carbon dioxide changes its state from gas to solid directly that is called dry ice.
How might dry ice be used for cleaning?Similar to sand blasting, dry ice cleaning, commonly referred to as cryogenic cleaning, uses solid CO2 or dry ice pellets instead of sand. The pellets expand by a factor of 700 when they hit the ground and evaporate into carbon dioxide gas. This expansion causes the contaminant to be raised and separated from the basic substance. creates daily dry ice blasting tools and exports them to numerous nations across the world.
In order to create dry ice, gaseous CO2 is first compressed and rapidly cooled to create liquid CO2. The liquid is next allowed to expand at a lower pressure to create CO2 snow. Finally, a hydraulic press compresses this snow into usable Dry Ice blocks, slices, or pellets.
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It is important to study the genetic makeup of other organisms because information in their genetic makeup may hold information about our own.
True or false
Answer:
True, because there is still much today that we probably don't know about how DNA and genetics work, and it is proven that humans do have the same genetics and DNA patterns as other organisms. FUN FACT: Bananas surprisingly share about 60% of the same DNA as humans!
Explanation:
Hope it helps! =D
Scientific researchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. At this time it became the general view that viruses were biologically "alive." This changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell and the scientific view changed: viruses are complex biochemical mechanisms but not alive. When not in contact with a host, the virus remains dormant. During this time there are no biological activities occurring and the virus is nothing more than a static organic particle. In this state viruses can remain for extended periods of time, waiting to come into contact with the appropriate host. When in contact with a host, it becomes active, reacts to its environment and/or host and directs its efforts toward self-replication. The viral goal now is to produce more viruses to attack host cells.
According to the passage all BUT ONE is a reason to classify viruses as living. That is they
According to the passage all but one is a reason to classify viruses as living which is that they lack mechanisms for metabolic function and is denoted as option D.
What is a Living organism?This is referred to something which exhibits the presence of life and are able to transfer genetic traits from the parent to offspring. Living organisms are also able to perform certain types of activities for it to be referred to as being living.
Example of the activities which are performed by living things include the following below:
MovementRespirationExcretion Reproduction etc.Virus is regarded as a living thing because they are capable of protein synthesis and contain a nucleic acid, DNA or RNA. They also have mechanisms for metabolic function which is therefore the reason why option D was chosen as the most appropriate choice.
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The options are
A)are capable of protein synthesis.
B)contain a nucleic acid, DNA or RNA.
C)response to changes in the environment.
D)lack mechanisms for metabolic function.
Density is mass per unit _____________________ ?
Question 10 options:
strength
volume
weight
length
Answer: Volume
Explanation: The formula of density is Density = mass/volume.
Volume is how much space something takes up.
Which is not an
effect of
overpopulation?
A. decreased competition
B. starvation of animals
C. leveling off of the population
D. disease spreading quickly
Answer:
B. starvation of animals
Please help ASAP will mark brainliest
5.2 Epithelial Tissues
1. Match the epithelial tissue to an organ in which the tissue
is found.
(1) simple squamous
epithelium
(2) simple cuboidal epithelium
(3) simple columnar
epithelium
(4) pseudostratified columnar
epithelium
(5) stratified squamous
epithelium
(6) stratified cuboidal
epithelium
(7) stratified columnar
epithelium
(8) transitional epithelium
(9) glandular epithelium
A lining of intestines
B lining of ducts of
mammary glands
C lining of urinary
bladder
D salivary glands
E air sacs of lungs
F respiratory
passages
G parts of male
urethra
H lining of kidney
tubules
I superficial layer of
skin
Answer:
(1) simple squamous
epithelium - lining of kidney
tubules
(2) simple cuboidal epithelium - A lining of intestines
(3) simple columnar
epithelium - parts of male
urethra
(4) pseudostratified columnar
epithelium - respiratory
passages
(5) stratified squamous
epithelium - superficial layer of
skin
(6) stratified cuboidal
epithelium salivary glands
(7) stratified columnar
epithelium - lining of ducts of
mammary glands
(8) transitional epithelium - lining of urinary
bladder
(9) glandular epithelium- E air sacs of lungs
Explanation:
The above mention cells are present in the lining of particular organs
do you think that the incubation period of all the animal is same? why?
No, the incubation period of all the animal is not same because The period between the infection of an individual by a pathogen and the manifestation of the illness or disease it causes.
What is an incubation Period?The number of days between becoming infected with something and possibly displaying symptoms is known as the incubation period. This figure is used by medical professionals and government officials to determine how long individuals must avoid contact with others during an outbreak.
What is the bird incubation period?From species to species, incubation times might differ significantly. Small songbirds typically require between 10 and 2 weeks to hatch and the same amount of time to fledge. The flinging process can take three weeks to a month for larger birds like woodpeckers.
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Which topic within this module has been the most valuable to your learning experience and why? stem in real life and in your future career?
The process of breathing is notoriously difficult to explain, mostly due to the complexity of the respiratory system inside the human body.
This is further explained below.
What is the respiratory system?Generally, In animals and plants, the respiratory system is a biological system that consists of certain organs and structures that are responsible for the process of gas exchange.
The size of the creature, the habitat in which it lives, as well as its evolutionary history all has a significant impact on the anatomy and physiology that are responsible for making this happen.
In conclusion, The act of breathing is famously difficult to describe, and the primary reason for this is the intricate nature of the respiratory system that exists inside the human body.
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CQ not Found as per module
The scientific observation that any two masses attract each other with a force based on the objects’ mass and their distance from each other is an an example of a scientific—
A law
B interference
C hypothesis
D theory
Trypanosome infections evade attacks by host immune systems through which of the following mechanisms?
A. insertion of its DNA into the nuclear DNA of host cells
B. production of toxins that kill lymphocytes
C. infection of lymphocytes leading to a decline in the host's ability to fight infection
D. production of new cell-surface proteins with a different molecular structure by each new generation
Trypanosome infections evade attacks by host immune systems through the following mechanisms
D. production of new cell-surface proteins with a different molecular structure by each new generation.
Extended infections are possible due to the fact trypanosomes undergo antigenic version—the expression of a large repertoire of antigenically wonderful floor coats, which lets the parasite populace steer clear of antibody-mediated removal.
3 categories of illnesses Trypanosoma causes are:
brucei, which causes drowsing sickness in human beings, and nagana in livestock. T. cruzi, which causes Chagas disorder in human beings. Trypanosoma culicavium, which infects birds and mosquitoes.The disease is more often than not transmitted via the chunk of an inflamed tsetse fly however there are other methods in which people are inflamed: mom-to-infant contamination: the trypanosome can move the placenta and infect the fetus.
Fever, extreme complications, irritability, intense fatigue, swollen lymph nodes, and aching muscles and joints are not unusual signs of sleeping sickness. some people expand pores and skin rash. innovative confusion, persona adjustments, and different neurologic issues occur after the infection has invaded the primary nervous gadget.
Antitrypanosomal treatment is indicated for all persons recognized with African trypanosomiasis. choice of therapy relies upon the infecting subspecies of the parasite and at the disease level. the primary-line drugs for both first and 2nd-stage disorders are extraordinarily powerful. Pentamidine is used to treat first-degree T.
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Compare and contrast the following cell signaling methods: quorum sensing, direct contact signaling, paracrine signaling, autocrine signaling, and endocrine signaling.
answer:
There are four basic categories of chemical signaling found in multicellular organisms: paracrine signaling, autocrine signaling, endocrine signaling, and signaling by direct contact.
What is the importance of chemiosmosis?
Answer:
Chemiosmosis is involved in the production of adenosine triphosphate (ATP), which is the main molecule used for energy by the cell.
Abdul and Jordan were making crafts. They were using beads, feathers, and crayons to make cards. Jordan got a little too excited at how nice his card turned out and knocked over a glass of water on their supplies. The beads, feathers, and crayons were all soaked in water. Which of the following explains what will happen to the craft supplies?
The crayons will dissolve in the water.
The feathers will dissolve in the water.
The beads will dissolve in the water.
None of the craft supplies will dissolve.
None of the craft supplies will dissolve when water soaks the supplies and is therefore denoted as option D.
What is Dissolve?This is referred to as the process in which a solute is merged with a solvent thereby forming a solution and it varies according to certain properties and features.
The supplies such as beads, feathers, and crayons are all incapable of forming a solution with water as a result of their molecular structures and their non polar parts which is why they are referred to as being insoluble substances.
On the other hand substances like salt, sugar are capable of dissolving in water and forming a solution which are referred to as soluble substances which is therefore the reason why option D was chosen as the most appropriate choice.
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Please help me with this
Symbiotic relationships occur
between what types of
organisms?
A. Animals of the same species
B. Living and non-living things
C. Any two species that are living close together
Answer: C. Any two species that are living close together
Explanation:
Symbiosis: relationship in
which two different organisms
live together, often
interdependently
Examples:
– parasitism
– mutualism
– commensalism
The _____ is the organ that pumps blood throughout the body. Blood carries oxygen and nutrients to cells and carries waste away from the cells
Answer:
heart
Explanation:
the heart is about a fist sized muscle that pumps blood throughout the body
statement that describes the process of cellular respiration
Answer:
Statement that describes the Process of Cellular Respiration is Converting chemical energy that is stored in food molecules into a form that is useful to living things.
Explanation:
Living cells release energy through the breakdown of glucose molecules, a process known as cellular respiration. There are three processes that make up cellular respiration.
GlycolysisKrebs CycleElectron Transport ChainGlycolysis, the first phase of cellular respiration, happens in the cytoplasm. In this step, enzymes convert a glucose molecule into two pyruvate molecules, releasing energy that is then transferred to ATP. Following glycolysis, the pyruvate is transformed into two molecules of acetyl CoA in a brief event known as the transition reaction.
The other two phases of cellular respiration take place in the organelle known as a mitochondrion. The inner membrane of the mitochondrion encloses a region known as the matrix, and the outer and inner membranes are separated by an intermembrane space.
The Krebs cycle, the second phase of cellular respiration, occurs in the matrix of a mitochondrion. At this point, the cycle completes two rounds, producing all of the carbon atoms.
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Explain enzyme inhibition
(In basic terms because this is a biology 101 class)
A chemical that prevents an enzyme from working. Enzymes participate in a variety of cell processes, such as cell signaling, growth, and division, as well as accelerating chemical reactions in the body. Enzyme inhibitors may be used in the treatment of cancer to prevent the growth of particular enzymes required by cancer cells.
How do the muscular and skeletal systems work together to make the human body move?
Answer:
They provide structure and movement to the body