Na+, K+, and insulin cannot cross the cell membrane without help whereas Glucose, oxygen, carbon dioxide and Fructose can diffuse.
What type of molecules can cross cell membranes without energy?Small nonpolar molecules like oxygen and carbondioxide are soluble in the lipid bilayer and so they can easily cross cell membranes. Small molecules such as water can also diffuse through cell membranes but larger molecules such as glucose, cannot diffuse through the cell membranes. Nonpolar molecules can pass through the cell membrane easily. Some larger nonpolar molecules like steroid hormones can also pass through the cell membrane easily. Moving through the cell membrane without the need for assisting proteins is called passive diffusion.
So we can conclude that Glucose, oxygen, carbondioxide and Fructose can cross the cell membrane without energy.
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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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A town located along the banks of a river has a 50-yard buffer zone exten
remain in its natural state. The town council is considering changing this zone from 50 yards to 15 yards so that a park
constructed. This project is expected to be completed within 2 years.
How will decreasing the buffer zone impact the biodiversity along the river?
OA. The change will have no impact because 2 years is long enough to allow organisms to adapt to the change.
OB. The change will have a negative impact because there will be less area for vegetation to filter runoff before enterin
OC. The change will have a positive impact because the townspeople will have a park and river walk to enjoy, and it wa
OD. The change will have a negative impact on people living near the park because there will be an increase in noise
the visitors.
The change will have no impact because 2 years is long enough to allow organisms to adapt to the change.
The correct option is A.
What is biodiversity and why it is important?Biodiversity is essential to the systems that support all life, including human life, on Earth. Without a wide range of different creatures, plants, and microorganisms, we cannot have the ecological health that we rely on to provide us with the oxygen we and the food we eat. Additionally, people value nature in and of itself.
What advantages does biodiversity give?Biodiversity contributes to a availability of food , nutrition, energy, the development of medications, and the demand for freshwater, all of which together support good health. Furthermore, it supports chances for employment and leisure activities that enhance overall wellbeing.
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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
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.
Question about study of life
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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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.
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
Which organism has an internal skeletal system made out of bones?
Internal skeletons are a feature of all vertebrate creatures, including fish, amphibians, reptiles, birds, and mammals.
What components comprise internal skeletons?A rigid, mineralized internal skeleton called an endoskeleton allows for movement by attaching to muscles. The axial and appendicular skeletons make up the human skeleton, which is an endoskeleton.
The axial, appendicular, and splanchnic skeletons of cows may be distinguished. The spinal column, ribs, and skull make up the axial skeleton. The cranium resembles that of a dog, except it is longer. The vertebral column extends horizontally from the base of the head to the end of the body.
Their skeletons support and shield them while also facilitating movement.
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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.
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.
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.
A Property of all living things. Not a property of all living thing.
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
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!
How do the muscular and skeletal systems work together to make the human body move?
Answer:
They provide structure and movement to the body
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.
Explain what happens as your cell needs to divide. Include why your cell is dividing and the process of division
Answer:
Cells need to divide for your body to grow and for body tissue such as skin to continuously renew itself. When a cell divides, the outer membrane increasingly pinches inward until the new cells that are forming separate from each other. This process typically produces two new (daughter) cells from one (parent) cell
Explanation:
Why Cells Divide• Mitosis - the process your body cells use to make exact replicas of themselves.
• Meiosis - creates sperm or egg cells.
• Binary fission - how single-celled organisms like bacteria copy themselves
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
Which means of particle transpoWhich means of particle transport requires input of energy from the cell?rt requires input of energy from the cell?
Active transport is the form of particle transport that requires input of energy from the cell.
Active transport is the one that makes use of energy for the transport of molecules across the membrane. It is further classified into two types: primary active transport and secondary active transport. Primary active transport directly uses the energy from ATP hydrolysis for the transport. Whereas, secondary transport involves cotransport system where the energy released from the downhill transport is used for the uphill transport of molecule.
Cell is the fundamental unit of life. It is the structural unit of all the organism. Cell can either be prokaryotic or eukaryotic.
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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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If a forecast states that the dew point and air temperatures are equal, what is likely to happen?
If a forecast states that the dew point and air temperatures are equal, the air is said to be saturated.
What is dew point?The dew point is the temperature to which a parcel of moist air must be cooled at constant atmospheric pressure and constant water vapor content in order for saturation to occur.
The dew point can also said to be the temperature at which the actual pressure of the vapor contained in an air parcel equals the saturation pressure, under constant atmospheric pressure.
When the dew point is equals the air temperature, the air is saturated and the relative humidity is %100.
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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
What interesting new hypothesis is being studied regarding embryo self-inspection
early in development?
The hypothesis was regarding embryo self-inspection in early development is that viability of embryo metabolism is quite rather than active due to depletion and appearance of amino acids from culture medium.
Early embryo consist of remarkable plasticity which means ability of separated early blastomeres to produce a whole organism. This aspect was determined from flux of radiolabeled methionine, premises that extent of DNA damage, RNA and protein content of immature oocyte are key factors whether zygote progresses to blastocyst stage.
This hypothesis was obtained from human and mouse and could be equally applied to reproduction in livestock, to get models for humans.
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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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28 points!!!Some people say it’s b and some say C which is correct .To test the effectiveness of a new nutrient supplement one group of identical mice is given the supplement and the other group is not given any thing .which is the most complete list of the parts of the experiment presented in this scenario.look at pictures.ALOT of points on the line.
The following is the most comprehensive list of the components of the experiment described in this scenario:
control team.experimentation teamdependent element. Option BDescribe experiment:This is a reference to the actions used to verify or disprove a theory. Other individuals who evaluate it, including scientists, use it to determine the veracity of the assertion.
According to the scenario, one group of identical mice receives the supplement while the other group does not, making the group that received the supplement the experimental group while the control group received nothing.
Option B was picked as the best option since the supplement that was provided to the mice served as the dependent variable.
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Indicate whether each textbox refers to a genotype or a phenotype by dragging them to the correct answer box.
Answer:
Black body and red eyes are the phenotype and ggWw and hetrerozygous are the genotype.
Explanation:
The phenotype is what is presented while the genotype is what is occuring int he genes to cause the phenotype.
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 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 .