The property of endospores that led to confusion in the experiments on spontaneous generation is their
a) small size
b) ability to pass through cork stoppers
c) heat resistance
d) presence in all infusions
e) presence on cotton plugs
Answers
The property of endospores that led to confusion in the experiments on spontaneous generation is their heat resistance.
What are Endospores? Endospores are defined as structures produced by bacteria to protect themselves from unfavorable conditions. The survival of a cell, as well as the distribution of the species under adverse conditions, is aided by these structures.
The properties of endospores that lead to confusion in the experiments on spontaneous generation are their heat resistance. Types of endospores:
There are two types of endospores; Terminal spores are present at the end of the cell. Subterminal spores are present at the center of the cell. Endospores as a source of confusion in experiments on spontaneous generation.
Endospores are produced by Bacillus and Clostridium species. Because of the heat-resistant endospores formed by some microbes, scientists were confused about spontaneous generation during the early days of microbiology because they could not completely sterilize infusions.
They were also perplexed because some infusions produced microorganisms even though they were sealed, and they were perplexed because some did not. They had no method to completely sterilize infusions until they figured out how to use heat to sterilize infusions.
The confusion in the experiments on spontaneous generation is their heat resistance. Endospores are also able to survive various other unfavorable conditions, including freezing, drying, radiation, and toxic chemicals.
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Related Questions
Your heart is an example of a(n) __________.
tissue
organ
cell
organ system
Answers
Answer:
Organ
Explanation:
The organ system is a group of organs. A cell is the basic unit of life. Tissue is what’s between cells and organs.
Your heart is an example of a(n) organ. A group of cell form a tissue, A group of tissue combine to form a organ.
Thus, Your cardiovascular system, which consists of a network of blood vessels that pumps blood throughout your body, is mostly composed of your heart.
It also interacts with other bodily systems to regulate your blood pressure and heart rate. Your lifestyle, family history, and medical history are all factors that determine how well your heart functions.
A fist-sized organ, the heart circulates blood throughout your body. It serves as your circulatory system's main organ. Four major muscle-driven chambers make up your heart; they are each powered by electrical impulses. Your nerve system and brain control how your heart beats.
Thus, Your heart is an example of a(n) organ. A group of cell form a tissue, A group of tissue combine to form a organ.
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A diagnostic test for tuberculosis (TB) involves injecting antigen (from the bacterium that causes TB) under the skin and then waiting a few days for a reaction to appear. This test is NOT useful for diagnosing TB in AIDS patients. Explain why
Answers
Answer:
This test is called TB Skin Test.
Some people who are infected with both HIV and TB bacteria will not react to the TB skin test. This is because the immune system is not working properly. Anyone who is HIV infected and has a negative skin test should also have other medical tests, if they have symptoms of TB disease.
The exact arrangement of the ancient hominin phylogeny is unknown, but MOST likely
A. robust australopithecines such as Australopithecus boisei are at the base and more gracile forms such as Australopithcus africanus evolved from those early robust forms.
B. Ardipithecus is at or near the base, and Australopithecus garhi gave rise to early Homo.
C. Australopithecus anamensis evolved directly into early Homo.
D. all of the different so-called species of Australopithecus are really one species, with the robust forms being males and the more gracile forms being females.
Answers
The exact arrangement of the ancient hominin phylogeny is unknown, but most likely, ardipithecus is at or near the base, and Australopithecus garhi gave rise to early Homo. Option B is correct.
The relationship among the various hominin species is still a subject of active research and debate among scientists, but Ardipithecus, a genus that lived about 4.4 million years ago, is considered by many to be one of the earliest known hominins. Australopithecus garhi, a species that lived about 2.5 million years ago, is believed by some researchers to be a direct ancestor of early Homo, although this remains a topic of ongoing investigation and discussion. Hence option B is correct.
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Why do we accept the theory of life from Miller and Urey?
Answers
Miller and Urey experiment tried to recreate the primitive atmospheric conditions earth had when it was completely abiotic (deovid of any form of life). Their results, showed that with the putative composition of inorganic compounds, plus a source of energy (like lighting) the emergence of organic compounds was likely. With this result, it was suggested that after millions of years of interacting organic molecules (olds and new ones) lipids and proteins would eventually arise. This experiment is not perfect, and has many assumptions (potentially drawbacks), but showed that organic compounds (the chemical basis of life) could emerge from quite simple components.
Which of the following prompts are correct regarding a mitochondrion? Check All That Apply Powerhouse of the cell Only organelle to use oxygen U Site of photosynthesis Energy is released when C-C bonds of nutrients are broken U Converts pyruvate or acetyle CoA to CO2 Uses CO2 from the air
Answers
Regarding mitochondria, the correct statements are - Powerhouse of the cell, Only organelle to use oxygen, Energy is released when C-C bonds of nutrients are broken, Converts pyruvate or acetyl CoA to CO2.
The powerhouse of the cell: Correct.The mitochondrion is often referred to as the powerhouse of the cell because it plays a crucial role in generating cellular energy in the form of adenosine triphosphate (ATP) through the process of cellular respiration.
Only organelle to use oxygen: Correct.Mitochondria are the primary organelles involved in aerobic respiration, which requires oxygen as the final electron acceptor in the electron transport chain.
Site of photosynthesis: Incorrect.Mitochondria are not involved in photosynthesis. Photosynthesis occurs in chloroplasts in plant cells, while mitochondria are present in both plant and animal cells and are responsible for cellular respiration.
Energy is released when C-C bonds of nutrients are broken: Correct.Mitochondria participate in the breakdown of nutrients, such as glucose, through a series of biochemical reactions, including glycolysis, the citric acid cycle (also known as the Krebs cycle), and oxidative phosphorylation.
During these processes, carbon-carbon (C-C) bonds are broken, releasing energy.
Converts pyruvate or acetyl CoA to CO2: Correct.In the citric acid cycle, pyruvate, derived from glycolysis, is converted to acetyl CoA, which then enters the cycle. In this process, carbon dioxide (CO2) is released as a byproduct.
Uses CO2 from the air: Incorrect.While plants utilize carbon dioxide from the air during photosynthesis, mitochondria do not directly utilize CO2 from the environment. They primarily use oxygen (O2) in cellular respiration.
Based on the correct statements, the options would be: The powerhouse of the cell, the Only organelle to use oxygen, Energy is released when C-C bonds of nutrients are broken, and it Converts pyruvate or acetyl CoA to CO2.
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What is the most important procedure for preventing the spread of biological contamination?
Answers
Answer:
hand hygiene
Explanation:
washing surfaces with disinfectant kills bacteria and fungi
washing with soap removes substances which traps pathogens as well as pathogens themselves from the skin.
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don't forget to follow and rate
Does DNA or RNA use the nitrogen base Thymine?
Answers
Answer:
Hi Ashley
Explanation:
DNA uses the nitrogen base Thymine (T). RNA uses the nitrogen base Uracil (U) instead of Thymine.
Hello! Can someone help me please!
BEING HUMAN AND PATHOGENIC ORGANISMS
.
Activities
1.- According to the type of cell, how can pathogenic organisms be classified?
Answers
Answer:
There are different types of pathogens, but we're going to focus on the four most common types: viruses, bacteria, fungi, and parasites.
What chemical reactions create love??
Answers
Answer:
to chemical reactions uuhh hmm boy+ girl= love ig lol
Explanation:
Answer:
You seeing a hot babe
Explanation:
When a person in the hospital is given fluid intravenously (an I.V), the fluid is typically saline (salt) solution with about the same water concentration as human body tissue. Explain how the use of distilled water in place of this saline solution would be expected to upset the patient's homeostasis. Your answer should be in the process of diffusion.
Answers
The process of osmosis would cause water to move into the cells causing them to swell and possibly burst.
If a person is receiving fluids intravenously saline may be used. Giving large amounts of pure water directly into a vein can cause blood cells to become hypotensive and potentially fatal. Cells can contain many solutes and are therefore considered hypertonic compared to distilled water which is hypotonic.
In this case, when the cell is placed in distilled water the water moves from the outside of the cell causing the cell to swell. Osmosis is the diffusion of water molecules through a selectively permeable membrane from areas of high concentration to areas of low concentration. Water enters and exits cells by osmosis.
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Which kind of rock would most likely form from the process shown in the picture? HELPPP !!
Answers
Answer:
B
Explanation:
Answer: B
you were correct :) it's sedimentary
sedimentary rocks are created by erosion, weathering, dissolution, precipitation, and lithification
Determine the stars colors and types.
Answers
Answer:
Explanation:
A- Supergaint
B- White dwarf
C-White dwarf
D-
E-Main sequence
cam someone explain how this works im so confused
Answers
Answer:
The Green is what the sickness is and it shows who has it
Explanation:
The shapes that have the green in it have inherited the sickness or whatever. You can see that the person that they are realted to have a 50% chance of getting it. Then when they passed it on it no longer effected them. It just depends on what genes you get.
Which type of reproduction would be the most beneficial for this sea anemone (complete gap 1 and gap 2)?.
Answers
Asexual reproduction would be the most beneficial for sea anemones.
Both asexual and sexual reproduction are options for anemones, and each has advantages and drawbacks of its own. Asexual reproduction produces children who are genetically identical to their parents. Compared to sexual reproduction, asexual reproduction enables the development of higher numbers of unique progeny more quickly and with less energy consumption; in stable marine conditions, this is a dependable, efficient, and successful method of reproduction. However, if environmental constraints swung too far from acceptable circumstances, this lack of genetic variation in progeny might cause the collapse of an entire colony of genetically identical animals.
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WORTH 100 POINTS HELP ASAP PLEASE IT'S DUE VERY SOON
Estimate the time since death (TSD), using the information provided. Work in pairs. Assume normal temperatures and environment, unless otherwise noted. You can type in the text box, or upload your answers.
1. The body is warm to the touch. No rigor is noticeable. A small level of livor is present, but blanches. Therefore, the body has not been dead for more than __________ hours.
2. The body is warm and beginning to show signs of stiffness. The body has been dead between ____________ and _____________ hours, approximately.
3. The body is cold to the touch and stiff. The body has been dead between _____________ and _____________ hours, approximately.
4. The body is cold and not stiff. The body has been dead for more than _________ hours.
5. Once a body has been in place for some time, even 30 minutes, some hint of fixed lividity may be apparent. If any fixed lividity shows up on any surface other than the inferior one, it is an indication that at some time thirty minutes or so after death the body was moved. a) A body found with heavy fixed lividity on the upper surfaces and light but fixed lividity on the lower surfaces was moved after __________________________ hour(s) and has been in place for ________ hour(s) or more. b) A body found with equal degrees of lividity on the upper and lower surfaces was repositioned or rolled over after _________________ hours.
6. The jaw and neck are rigid but the rest of the body is limp, indicating the body has been dead for _____________ to ____________ hours.
7. Every skeletal muscle is rigid down to the legs (but not including the legs) means the body has been dead for ____________ hours.
8. The jaw is limp but from the neck down is rigid, so the time since death is approximately ________________ hours.
9. In true algor mortis in a normal environment, the body decreases temperature 2 degrees per hour in the first 6 hours, and 1.5 degrees per hour from 6 to 12 hours. Therefore, if the liver (organ) temperature was 89 degrees, the person has been dead for approximately _______ hours. What if the liver temperature is 84 degrees? Time since death would be ___________ hours.
10. Scenario 1: Only the legs are in rigor. The body is room temperature. Livor is fixed on the lower side. The person has to have been dead for at least ___________ hours.
11. Scenario 2: A woman is found with some light lividity on her front side and heavy lividity on her back side. Her roommate claims that he found her in the apartment after coming home from work and, attempting life-saving techniques on her, may have turned her over in the process. Once he could not revive her, he left her in place for a couple of hours, claiming he was too scared to call the police, who arrived within half an hour after his call. Do you buy his story? Why or why not?
12. A body is found outside in cold weather. The body itself is cold and only the legs are stiff. The body has been dead between ________ hours.
13. A body is found in a car at the end of Southern Blvd. during the summer. The windows to the car are closed. It is bloated, with marbling and dark discoloration. The body has probably been dead for at least _______ days.
14. A badly decomposed, almost skeletonized body is found on the mesa in May. Some flesh is still present on the bones, but some of it has mummified. Why is it so difficult to estimate this person’s TSD?
Answers
Answer:
1. The body is warm to the touch. No rigor is noticeable. A small level of livor is present, but blanches. Therefore, the body has not been dead for more than _______12___ hours.
The templates that CICS uses to decide what characteristics to offer temporary storage queues for the CICS region are described in the Temporary Storage Definitions (TSD).
Thus, CICS utilizes the properties of the template with the longest matching template name it can locate in the TSD when an application first establishes a temporary storage queue.
The queue immediately transforms into a nonrecoverable local queue with public access if no match is discovered. For security, recovery, and remoteness, CICS needs TSD entries.
You define generic data identifiers so that any one-of-a-kind temporary storage identification (created dynamically in a program) that starts with the same characters as a generic identifier (in the TSD) can instantly take on the same characteristics as the TSD entries.
Thus, The templates that CICS uses to decide what characteristics to offer temporary storage queues for the CICS region are described in the Temporary Storage Definitions (TSD).
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Someone plss help me with number 6
I just needed it to be checked to see if it’s correct
Answers
Answer:
I think it's B
Explanation:
he discovered that the maggots were from eggs. as a generation
how are frogs created?
Answers
How many
dependent
variables do you
want in an
experiment?
Answers
Answer:
you only want 1
Explanation:
hope this helps
Answer:
You want two dependent variables in an experiment.
Explanation:
Suppose two monsters that are heterozygous for eye shape
are crossed. What is the likelihood that the offspring will have
three eyes? (Note: Two eyes are dominant to three eyes.)
Answers
Answer:
then the percentage of offspring with recessive phenotype will be: Aa x Aa = AA Aa Aa aa, so recessive phenotypes would be 1/4 = 25%.
Explanation:
Alice has type A blood and her husband mark has type B blood. Their first child, Amanda, has type O blood. Their second child has type AB blood. What is Alices genotype? Whats Marks genotype? Explain why.
Answers
preventative nutritional factors for which vision problem include omega-3 fatty acid, lutein and zeaxanthin supplements?
Answers
The vision problem for which preventative nutritional factors, such as omega-3 fatty acid, lutein, and zeaxanthin supplements, are beneficial is age-related macular degeneration (AMD).
AMD is a progressive eye condition that affects the macula, the central part of the retina responsible for sharp, central vision.
Research suggests that certain nutrients play a role in reducing the risk of AMD or slowing its progression.
Omega-3 fatty acids have been associated with a decreased risk of AMD.
Lutein and zeaxanthin are antioxidants found in green leafy vegetables, such as spinach and kale, as well as in other colorful fruits and vegetables.
Supplements containing omega-3 fatty acids, lutein, and zeaxanthin are often recommended for individuals at risk of or with early stages of AMD.
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How is photosynthesis and cellular similar, and how are they different?
Answers
Answer:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.
Summarize it!
Predict Imagine you have a blue bird whose color trait is dominant, and a yellow
bird who displays the recessive color trait. Use Mendel's model of inheritance to
predict the birds' offspring coloration if there were eight eggs. sc.7.L.16.1
Answers
if there were eight eggs, all of the offspring would be blue.
What is Offspring?
Offspring refers to the descendants or children of a particular organism or pair of organisms. It can refer to the biological or genetic offspring, such as the children produced through sexual reproduction, or it can refer to adopted or non-biological children. The offspring of an organism inherit traits from their parents through genetic inheritance.
According to Mendel's model of inheritance, if a blue bird with a dominant color trait and a yellow bird with a recessive color trait were to mate, and assuming that both birds are homozygous for their respective traits, all of their offspring would have a blue coloration, as blue is the dominant trait.
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HELP pls will mark you the brainliest
Answers
Answer:
cell division
Explanation:
I hope this answer finds you well. In an effort to assist your understanding of the topic, I would like to provide you with an explanation. Please let me know if you have any questions or if there is anything else I can do to help.
Cell division can occur through two main processes: mitosis and meiosis. Mitosis is the process by which a single cell divides into two identical daughter cells, each with the same number of chromosomes as the parent cell. This process is important for the growth and repair of tissues in the body. Meiosis, on the other hand, is a specialized form of cell division that occurs in reproductive cells, such as eggs and sperm. During meiosis, the cell divides into four daughter cells, each with half the number of chromosomes as the parent cell. This process is necessary for sexual reproduction and the creation of genetically diverse offspring.
The other options you provided, metaphase, interphase, and G1 phase, are all stages of the cell cycle, which refers to the series of events that occur in a cell leading up to cell division. Metaphase is a stage of mitosis during which the chromosomes line up in the middle of the cell. Interphase is the stage of the cell cycle between cell divisions, during which the cell grows and prepares for division. The G1 phase is the first stage of interphase, during which the cell performs its normal functions and grows in size.
Which of the following BEST defines a right?
A.
something that is owed to anyone through just claim or legal guarantee
B.
a benefit that is earned that allows someone to do something
C.
something that is denied to every citizen
D.
a benefit that is denied to those who do not obey the law
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
The answer I B thank
Explanation:
Answer: A
Explanation:
Which statement best compares these chemicals?
Answers
Answer:
the sentence that compares
Brackish water can be found in which of the following ecosystems?
a. coral reefs
b. mangrove swamps
c. polar regions
d. deep sea
Answers
Answer:
The answer would be B. Mangrove Swamps
Explanation:
Brackish water is when freshwater meets with sewer water or salty water.
Brackish water can be found in the mangrove swamps ecosystem.
They are marked by halophytic trees, shrubs and different flora thriving in saline to saline tidal waters.
What is the mangrove swamps ecosystem?
Mangrove forests, also named mangrove swamps, mangrove shrubs or trees, are formative wetlands that appear inshore intertidal zones. Mangrove forests grow mainly in equatorial and subtropical spaces because mangrove trees cannot resist freezing .
It is distinguished by such qualities as a damp climate, saline habitat, waterlogged soil or sludgy soil.
Thus, Brackish water can be found in the mangrove swamps ecosystem.
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new technology, including dna testing, has led to the exoneration of several people who served many years in prison before being cleared. this led to the abolition of the death penalty in several states because'
Answers
The fact that new technology has led to the exoneration of several people who served many years in prison before being cleared led to the abolition of the death penalty in several states because the revelations cast doubt on the current criminal justice system.
Exoneration is the action of officially absolving someone from blame and reversing their conviction for a crime. Generally, it occurs when new evidence comes forward to demonstrate the person's innocence.
The development of technology has led to the exoneration of many people so far. The one that has a relatively big role is DNA testing because it can determine identities with almost 100% accuracy.
The fact that many people have been falsely convicted after DNA testing technology proves their innocence makes several states abolish the death penalty.
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Which object would have the slowest speed at terminal velocity?(1 point)
a 50-kilogram block with a large parachute
a 50-kilogram block with a large parachute
a 50-kilogram block with no parachute
a 50-kilogram block with no parachute
a 10-kilogram block with no parachute
a 10-kilogram block with no parachute
a 10-kilogram block with a small parachute
Answers
The object that would have the slowest speed at terminal velocity is 50-kilogram block with a large parachute. That is option A.
What is terminal velocity?Terminal velocity is defined as the velocity that is attained by an object when it's air resistance is equal to the force of its acceleration.
Terminal velocity can also be defined as the highest speed an object can attain when it falls through the air.
The factors that affect terminal velocity include the following:
its mass. its surface area, and the acceleration due to gravity , g.The mass of an object is directly proportional to its terminal velocity as it fall but with the exception of presence of resistance force.
Therefore, the mass of 50kg would have the slowest speed at terminal velocity because of the resistant force attached to it being the parachute.
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when it is said that the cell membrane has a difference in electrical charge between its inside and the outside, this means the membrane is .
Answers
When it is said that the cell membrane has a difference in electrical charge between its inside and the outside, this means the membrane is Polarized.
The cell membrane is said to be polarized because there is a potential difference across the cell membrane. When the membrane potential becomes more positive than the resting potential, the membrane is said to be depolarized. When the membrane potential becomes more positive than the resting potential, the cell membrane is said to be depolarized.
When the membrane potential becomes more negative than the resting potential, the membrane is said to be hyperpolarized.
The resting membrane potential is determined by the uneven distribution of ions (charged particles) between the inside and outside of the cell and the differential permeability of the membrane to different types of ions.
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