Answer:
Im assuming because microscopes hadnt been invented. Also the idea of communicable diseases wasnt around so people assumed it was things like god that caused illness
Answer:
A true understanding of the physiology of these bacteria and their roles in ecology, host health, and natural product production requires their cultivation in the laboratory. Recent advances in growing these species include coculture with other bacteria, recreating the environment in the laboratory, and combining these approaches with microcultivation technology to increase throughput and access rare species. These studies are unraveling the molecular mechanisms of unculturability and are identifying growth factors that promote the growth of previously unculturable organisms. This minireview summarizes the recent discoveries in this area and discusses the potential future of the field.
Explanation:
Homeostasis is necessary for a cell to survive. What is the definition of homeostasis
Answer:
Homeostasis is the process of maintaining a constant internal environment suitable sustaining life.
Homeostasis continues to maintain ideal environment for enzyme action and all cell functions throughout the body.
Why homeostasis is necessary?It is the preservation of a constant internal environment in the face of changing internal and external conditions. These include blood glucose concentration control in the human body.
A series of control mechanisms at the organ, tissue, or cellular level maintain homeostasis.
Substrate supply, activation or inhibition of individual enzymes and receptors, enzyme synthesis and degradation, and compartmentalization are examples of control mechanisms.
The liver, pancreas, kidneys, and brain (hypothalamus, autonomic nervous system, and endocrine system) all contribute to homeostasis.
The liver is in charge of metabolizing toxic substances and maintaining carbohydrate metabolism with pancreatic signaling.
Thus, homeostasis is necessary for a cell to survive.
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Which of the following best explains the importance of Earth’s crust to living organisms? a. The continental crust allowed the evolution of life on land. B. The crust provides raw materials necessary for life. C. The crust allowed the formation of fossil fuels. D. The rock cycle recycles sedimentary rocks formed from animal shells. Please select the best answer from the choices provided A B C D.
The statement 'the crust provides raw materials necessary for life' best describes the interaction between Earth's crust and organisms. It is fundamental for the biogeochemical cycles.
Earth's crust consists of a tiny layer on the outside of Earth that accounts for less than one percent (1%) of Earth's volume.
The Earth's crust is essential in biogeochemical cycles that support the continuity of life on the Earth planet.
These biogeochemical cycles include, among others, the carbon cycle, nitrogen cycle, phosphorous cycle, etc.
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Which of Earth's spheres are involved in the water cycle?
O A. Atmosphere, hydrosphere, and biosphere only
Imy
O B. Atmosphere and lithosphere only
O C. Atmosphere, lithosphere, and hydrosphere only
O D. Atmosphere, lithosphere, hydrosphere, and biosphere
Answer:
the answer is D.
Explanation:
all of the spheres interact with each other in order to make the water cycle occur.
A blood sample consists of dead cells that are breaking apart into their basic molecular building blocks. What type of molecule is best suited for identifying the specimen
Answer:
D N A!!!!
Explanation:
have a great day on your assignment
To read signs, you need to have good ________ . focal vision peripheral vision paracentral vision double vision
To read signs, one needs good peripheral vision. The capacity to see things that are beyond of one's direct line of sight is known as peripheral vision. It is the capacity to perceive things that are beyond of one's direct field of vision.
Because it enables a person to perceive items that are situated at the boundaries of their peripheral vision, this form of vision is crucial for reading signs.
For instance, it's crucial to be able to understand signs that are placed along the side of the road when driving. A person might not be able to see the signs and might miss crucial information without adequate peripheral vision. Aside from peripheral vision, clear focus vision is crucial for reading.
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Laura has a bacterial infection in her urethra, most likely Escherichia coli. How are the bacteria able to stay attached to the urethra, even during the full force of urination
What were the physical conditions of the Earth? Where is the evidence to support this claim?
Answer:
Water earth fire and rain hurricanes fire tornados etc
Explanation:
There are millions of physical conditions but that's the only ones I could think of.
why would a light wave speed up if it moved from air into hydrogen
which division of the nervous system has two nerve fibers connecting the cns to an effector?
In terms of structure and function how do the vacuoles in a typical plant cell compare to those of a typical animal cell
Answer:
Vacuoles in animal cells do NOT help the cell take its shape, however, in plant cells, vacuoles are larger, and DO affect the shape of the cell.
The function of the vacuole in plants is different from that in animals, as the vacuole in animals is smaller, while in plants it is larger and pushes the nucleus to one side while consisting of water and other materials.
What is the significance of the vacuole in plants and animals?Vacuoles are cell organelles found in both plants and animals, in plants, vacuoles are large, fluid-filled structures that occupy a large portion of the cell, and they perform several important functions, including storing water and helping to maintain the shape of the cell, while in animals, vacuoles are smaller and less in number than in plants, as they have a variety of functions, like storing waste materials, etc.
Hence, the function of the vacuole in plants is different from that in animals, as the vacuole in animals is smaller, while in plants it is larger and pushes the nucleus to one side while consisting of water and other materials
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How does a plants structure contribute to its ability to perform photosynthesis
Answer: 1. Leaves have a large surface area; this allows them to absorb more sunlight. They are also thin, meaning that carbon dioxide has a shorter way to travel.
2. stomata allow the entrance of carbon dioxide. The more complex adaptations are of the internal leaf structure.
what biotic factors are in freash water moderat rivers?? (list atleast 4) please
Answer:
algae,fish and bacteria and aquatic invertebrates
Explanation:
Because how would the economy work without half of these things
What is the difference between community and ecosystem?
Please help
Answer:
Ecosystems are composed of all of the various living organisms, along with the abiotic factors that impact them. The difference between community and ecosystem in ecology is that the community only refers to living things within an ecosystem. A sample of soil can provide a small-scale example.:
List three limitations for measuring cell size
Answer:
Cell size is limited by the cell's surface- area- to - volume ratio
please answer this. what is it
Answer:
B: mountain lions porbably outcompete wolves for food.
Which two types of RNA are joined together by base pairing a codon with an anticodon ?
A- tRNA and rRNA
B- mRNA and rRNA
C- tRNA and itself
D- mRNA and tRNA
Answer:tRNA (translate rna) and mRNA(messenger rna).
Explanation:
Why is ATP known as the energy currency?
5 line answer plz
Answer:
ATP is commonly referred to as the "energy currency" of the cell, as it provides readily releasable energy in the bond between the second and third phosphate groups. ... As a result, cells within the human body depend upon the hydrolysis of 100 to 150 moles of ATP per day to ensure proper functioning.In addition to providing energy, the breakdown of ATP through hydrolysis serves a broad range of cell functions, including signaling and DNA/RNA synthesis. ATP synthesis utilizes energy obtained from multiple catabolic mechanisms, including cellular respiration, beta-oxidation, and ketosis.
Explanation: is this good enough?
Answer:
Because its a sequence in which molecules can store their own energy and use it when needed such as in a chemical reaction , note that this is the main reason some molecules stay dormant during a chemical reaction and that is because they didn't use ATP
Explanation:
The principal molecule for storing and transferring energy in cells. It is often referred to as the energy currency of the cell and can be compared to storing money in a bank. ... AMP can then be recycled into ADP or ATP by forming new phosphoanhydride bonds to store energy once again. (This Is A Web Response) but feel free to use mine if it helps its a more simpler term.
Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each cell? Explain.
Answer:
92 daughter chromosomes.
Explanation:
There are 46 chromosomes in a normal cell and each chromosome turns into 2 daughter cells. So 46 plus 46 is 92.
Which of the following mutations would be the LEAST likely to have a harmful effect on an organism?
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Why are hydrogen bonding and popularity so important for water molecules?
Answer:
they are so important because the presence of hydrogen bonds also makes water molecules more 'sticky' or in scientific terms cohesive and adhesive. The small charges on the water molecules allows them to stick together which is why water has a 'skin' that small insects can walk on, and also explains why water can be sucked up a straw so easily.
Explanation:
I hope this helps you!
Can someone plz help me? :(
Answer:
D - design a device that can throw an object at least 15 metres
Answer:
D. Design a device that can throw an object at least 15 meters.
Explanation:
First of all, the object shown as you may be able to tell, look like a catapult. It also shows the top end of it holding a ball, getting ready to launch it. It then shows a line of the ball traveling after being launched. The balls land of the ground at 15 meters. From this iformation you look at the options:
A. Design an object that is 10 meters tall.
No, because 10 meter is just the highest point of the ball being launched.
B. Design a vehicle that can travel across a 10-meter feild.
No, because it is the ball that is traveling, not the catapult.
C is about a vehicle traveling again, so eliminate that too.
D. Design a device that can throw an object at least 15 meters.
This describes exactly what we soo in the picture. Meaning D is correct.
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1. Explain the function of white blood cells in the body.
2.
How is a red blood cell adapted to carry
oxygen and nutrients throughout the body? Explain
3.
What would happen to us if no platelets
are found within the blood again. Explain.
4. Give the general (collective) functions of the blood
Answer:1. White blood cells are part of the body's immune system. They help the body fight infection and other diseases.
2. Red blood cells have adaptations that make them suitable for this.
3. The blood would not clot in case of an injury.
4. Blood supplies essential substances and nutrients.
Explanation: 1. White blood cells are able to recognize viruses and/or infectious germs, which is how they fight off disease/sickness. It is also why we have vaccines. Vaccines put either dead or weakened parts of a germ into your body. Then, the white blood cells recognize it and fight it off the next time it enters your body.
2. They contain hemoglobin, a red protein that combines with oxygen. They have no nucleus so they can contain more of the hemoglobin. they are small and flexible so that they can fit through narrow blood vessels.
3. This will lead to excess blood loss and can even lead to the death.
4. Such as as sugar, oxygen, and hormones to our cells. It also carries waste away from the cells, this waste is eventually flushed out of the body in urine, feces, sweat, and lungs.
The movement of water across cellular membranes from a hypotonic to hypertonic environments through aquaporins, which are channel proteins, can be defined as both
A: simple diffusion and active transport.
B: active transport and facilitated diffusion.
C: osmosis and facilitated diffusion.
D: endocytosis and active transport.
why is modification of seed is useful
Proteins are polymers of amino acids linked by ______. Multiple choice question. hydrogen bonds phosphodiester bonds covalent bonds peptide bonds
Answer:
peptide bonds
Explanation:
Amino acids are linked together into linear chains called polypeptides
What distinguishes an acute disease from a chronic disease?
What is the difference between them
Answer:
Acute illnesses generally develop suddenly and last a short time, often only a few days or weeks. Chronic conditions develop slowly and may worsen over an extended period of time—months to years.
Acute diseases refer to the medical condition that occurs suddenly and lasts for a shorter period of time. Chronic diseases develop slowly in our body and may last for a lifetime. Chronic diseases are sometimes fatal.
Explanation:
Hope you could understand.
If you have any doubt, feel free to ask.
15. The
results when pollutants trap radiant energy from the sun
resulting in a warming trend in the atmosphere.
A. greenhouse effect
B. acid rain
C. radioactivity
D. extinction
Answer:
A. greenhouse effect
Explanation:
The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere. Climate change results from the shedding of gases like CO2 into the atmosphere where it can trap more heat.
For people who need to study this
Answer
ok
Explanation:
Answer: okay thank you sir!
Have a great Day/Night
Describe the composition of the cell membrane
Explanation:
With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.
why a genetic bottleneck can be an important evolutionary factor for a species
Answer:
Genetic drift decreases genetic diversity within a population.
Explanation:
Genetic drift decreases genetic diversity within a population. It is a change in allele frequencies due entirely to random chance and is more likely to affect smaller populations than large ones. Population bottlenecks can lead to genetic drift.