The appearance of colonies of streptococcus pneumoniae is related to the presence or absence of:_________
The appearance of colonies of streptococcus pneumoniae is related to the presence or absence of a polysaccharide coat.
Streptococcus pneumonia's extracellular polysaccharide capsule, the most important virulence factor , helps to initiate infection by allowing the bacterium to adhere to host cells and cause inflammation, while also providing protection from the host's immune system. Griffith conducted his experiments with Streptococcus pneumoniae, a bacterium that causes pneumonia. Griffith worked with two strains of this bacterium called rough (R) and smooth (S).Pneumococci produce pneumolysin, which breaks down hemoglobin into a green pigment that can be observed as a large green zone surrounding S. pneumoniae colonies growing on blood-agar plates.
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The Saffir-Simpson scale measures?
the density of water
the ocean temperature
none of the above
the pH of the ocean
the salinity of the ocean
The Saffir -Simpson scale measures cosmogenous sediments.
The Saffir-Simpson Hurricane Wind Scale is used to predicts or measure the ( the accurate number from one to five) hurricane's strength by which speed it is coming , and mainly to get ready to face the upcoming natural clammities. The sustained wind speed of a storm defines its category. This method is used in determining the extent of probable property damage along a hurricane's course.Tropical cyclones which occurs in the northern Pacific Ocean and North Atlantic Ocean are measured by using the Saffir Simpson scale by meteorologists.
A meteorite is the solid piece of debris from which an object in deep space which can survives its passage by the atmosphere mainly to reach the surface of the planet or moon, such as ------a comet, asteroid, or meteoroid and so the meteorites are also known as cosmogenous sediments.
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14) An environmental policy instrument, which has the lowest control and monitoring cost: a) BACT b) tradeable emission permits c) emission standards.
The environmental policy instrument with the least control and monitoring prices is option b) tradeable emission permits.
Cap-and-trade systems, commonly referred to as tradable emission permits, enable the distribution and selling of licences that signify the right to emit a specific quantity of pollutants. This approach places an overall cap on emissions, but specific businesses are free to buy or sell permits in accordance with their emission requirements.
Tradeable emission permits provide greater flexibility and reduced monitoring costs as compared to alternative choices like a) Best Available Control Technology (BACT) and c) emission standards.
While emission regulations necessitate constant monitoring to guarantee adherence to set emission limits, BACT necessitates comprehensive monitoring and enforcement to ensure compliance with specific emission reduction technologies.
Tradeable emission permits, however, are dependent on the market mechanisms and self-regulation, reducing the need for extensive monitoring and enforcement efforts.
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The environmental policy instrument that has the lowest control and monitoring cost is b) tradeable emission permits.
This can be classified as an example of the market-based approach to environmental regulation. An environmental policy instrument is a technique that governments utilize to influence human behavior concerning the environment. The following are three types of environmental policy instruments: Emission standards, Best Available Control Technology (BACT), and Tradable Emission Permits (TEP).
In the event that an organization or industry has an emission permit that is under their level of pollution output, it can trade the excess permit to different businesses in need of additional permits. Consequently, the framework guarantees that a similar amount of pollution is created, but this is done at a lower cost to the businesses. This trading system reduces the expense of compliance by allowing companies to choose whether or not to trade their emissions and how much to pay for the permits. Therefore, the tradeable emission permit instrument has the lowest control and monitoring cost.
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Earth’s layers are determined by their physical properties and chemical composition. In the lesson, you learned about each of Earth’s layers, what the layers are made of, and why they are important to the Earth. In the space below, write about how the atmosphere may be classified. Would it be part of the lithosphere, or a separate layer? Explain your answer.
Answer:
Generally, the Earth is divided into spheres which include the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). The earth is divided into three layers based on chemical composition and these are the core, mantle and crust. In addition, the earth is also divided into physical properties which include lithosphere, athenosphere, mesosphere, outer core and inner core. Based on the given details, we can conclude that the atmosphere cannot be part of the lithosphere but instead, it is classified in a separate layer. The lithosphere only consists the outermost, rigid part of the Earth, which are the crust and the mantle. Hope this answer helps
Explanation:
A solution outside of a cell that contains an equal water concentration with the cytoplasm of a cell is called:
Answer:
isotonicity
Explanation:
If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.
Define the term “anthropogenic greenhouse effect.” Why is it important to distinguish it from the term “natural greenhouse effect”?
Answer:
Anthropogenic (human-caused) GHG emissions are modifying the Earth's energy balance between incoming solar radiation and the heat released back into space, amplifying the greenhouse effect and resulting in climate change.
Explanation:
While the natural greenhouse effect makes life possible on Earth, human activity can cause increased amounts of greenhouses gases to be produced in our atmosphere, resulting in a greenhouse effect.
please help i'm taking a test
That wave has a period of 0.040s, what is the frequency?
A. 28Hz
B. 15Hz
C. 25Hz
Answer:
0.040s
Explanation:
f=1/t
A folded membrane that forms a network of interconnected compartments in the cytoplasm
The cytoplasm of eukaryotic cells contains a sizable membrane-bound compartment known as the endoplasmic reticulum (ER).
What does the cytoplasmic network of membranes look like?The endoplasmic reticulum (ER), which extends from the nuclear membrane throughout the cytoplasm, is a network of tubules and sacs (cisternae) that are membrane-enclosed. The biggest organelle in the majority of eukaryotic cells, the endoplasmic reticulum is completely encircled by a continuous membrane.
What is the name of the foldable membrane seen in the ER and Golgi?The term "cisternae" refers to these hollow, flattened folds and sacs. The ER serves two main purposes: Transport: Much like an intracellular highway, the ER allows molecules, such as proteins, to move from one location to another. Similar to unattached ribosomes, ER-attached ribosomes synthesize proteins.
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Which is not an echinoderm?
A.)starfish
B.)sea urchin
C.)squid
D.)sand dollar
\( \large \color{red}Answer:\)
Which is not an echinoderm?
A.)starfish
B.)sea urchin
C.)squidD.)sand dollar
\( \large \color{Blue}Explaination:\)
Starfish, sea urchin and sand dollars are echinoderm.What goes into cellular respiration and photosynthesis?
Carbon dioxide and water goes into cellular respiration and photosynthesis and comes out with oxygen and glucose.
In experiments with two species of paramecia, a scientist proved that two different species cannot both exist in the same area with the same limited resources. This outcome demonstrates what principle?
answer choices
intraspecific competition
competitive exclusion
exponential growth
homeostasis
Answer:
competitive exclusion
Explanation:
competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche
hope this helps
What would you need to do to your model to make it look like a true DNA molecule?
Write a summary about the relative positions of the sun, earth and moon throughout the lunar cycle. Your summary must should be a minimum of 5 sentences.
Answer:
The amount of Moon we see changes over the month — lunar phases — because the Moon orbits Earth and Earth orbits the Sun. Everything is moving. During a lunar eclipse, Earth comes between the Sun and the Moon, blocking the sunlight falling on the Moon. Earth's shadow covers all or part of the lunar surface.
How do the types of resources generated by Kentucky compare with the United States?
Which is true about reflected light?f
Answer:
Hello, this question may be incomplete but if you ask me in the comments or post it as a completed question the I am happy to help. But look on the bright side have you checked todays date its 2/22/2022 there's a lot of 2's lol. Have a great day and if it's possible as to giving me brainliest that would make me happy. Thanks again.
Explanation: Some other great new is that I found some information on the web about this topic (Note: I said I found this on the web, so this is not written by me so credit to the author) Reflected light produces a mirror image. The amount of light reflected by an object, and how it is reflected, is highly dependent upon the degree of smoothness or texture of the surface.
Here is also an image I found that will help as well.
Thanks, one more time have a happy day!
Computers would also help kids apply for schools and jobs.
Which of the following is relevant evidence supporting the
claim?
Students who want to go to Brentview
Arts must fill out an online application.
Our parents say Brentview Arts
Magnet School is one of the best
schools in the neighborhood.
Many of us plan to look for part-time
jobs in the summer,
The school also asks for
recommendations, but these can be
sent in by regular mail.
Answer:
students who want to go to Brentview Arts must fill out an online application
Explanation:
if the only way to get into Brentview Arts is by doing an application online, then computers would help those students. They can't send it through the mail so the computer would be their only resource
what information might a researcher gain about the p53 protein by examining where the conserved threonine residues lie?
By examining the location of conserved threonine residues in the p53 protein, a researcher may gain insight into the protein's stability and potential role in cellular signaling pathways.
The p53 protein is a crucial player in regulating the cell cycle and preventing the development of cancer. It is often referred to as the "guardian of the genome" due to its role in promoting DNA repair and preventing uncontrolled cell division.
As a result of its important functions, the p53 protein has been highly conserved throughout evolution, with many of its residues retaining the same sequence across different species. One piece of information that a researcher can gain about the p53 protein by examining where the conserved threonine residues lie is the regions of the protein that are critical for its function.
Threonine is a type of amino acid that is often involved in forming important interactions with other proteins, so the presence of conserved threonine residues can indicate areas of the p53 protein that are critical for maintaining its structure and function.
Additionally, by analyzing the location of the conserved threonine residues in the p53 protein, researchers can gain insight into the evolutionary pressures that have shaped the protein over time.
The fact that certain residues have been conserved suggests that they play a critical role in the protein's function, and that changes to these residues would be detrimental to the protein's ability to perform its functions.
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What's a good format for biology CER/Essay?
The ridge count of this fingerprint is closest to ---- ridges.
A) 26
B) 14
C) 10
D) 18
E) 22
Answer:
B
Explanation:
draw an Imaginary line from the core(centre of the circles) to the delta(the pumps that look straight) and count rhe lines that cross the imaginary line you get 14.
I hope it's right.All the best!
by which large pieces of food are cut and crushed into
smaller pieces is called
a. emulsification b. chemical digestion
c. absorption de mechanical d
5. The tube that connects the mouth to the stomach is the
a. esophagus. b.epiglottis
c. peristalsis. d. pancreas.
5. The hard, outer coating of the tooth is called
a, a molar.
b. enamel.
c. an enzyme. d. dentin
- The building blocks of proteins are
a. enzymes. b. minerals,
c. amino acids, d. molecules
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C d. vitamin B
. Having too little of the mineral iron can cause
a. rickets.
b. goiter.
c. anemia d. beriberi.
The wavelike motion that moves food through the digestive tract is called
a. emulsification b. digestion. c. oxidation d. peristalsis.
. The enzyme that digests proteins is called
a. gastric juice. b. pepsin. c. chyme. d. lipase.
Food leaves the stomach in a thick, liquid form called
a. chyme. b. bile с. pepsin.
d. saliva
The movement of food molecules from the digestive system to the blood is called
a. emulsification. b. chemical digestion. c. absorption d. peristalsis.
Gastric juice contains all of the following except
a. hydrochloric acid
b. mucus c. pepsin
d. bile
The process by which large food molecules are broken down into smaller food
molecules is
a. chemical digestion. b. oxidation c. mechanical digestion d. absorption
d. mouth
Fats are digested in the
a. large intestine b. small intestine. c. stomach.
Poor nutrition caused by an unbalanced diet is called
a. rickets. b. anemia. c. malnutrition
d. goiter.
The fingerlike projections on the lining of the small intestine are called
h cilia
d. villi.
c. bile
Answer:
by which large pieces of food are cut and crushed into
by which large pieces of food are cut and crushed intosmaller pieces is called:
d. mechanical digestion
5. The tube that connects the mouth to the stomach is the:
a. oesophagus
5. The hard, outer coating of the tooth is called:
b. enamel
- The building blocks of proteins are:
c. amino acids
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C
. Having too little of the mineral iron can cause:
b. goitre
The wavelike motion that moves food through the digestive tract is called:
d. peristalsis
Gastric juice contains all of the following except:
d. bile
The process by which large food molecules are broken down into smaller food
The process by which large food molecules are broken down into smaller foodmolecules is:
c. mechanical digestion
Fats are digested in the:
b. small intestine
Poor nutrition caused by an unbalanced diet is called:
c. malnutrition
The fingerlike projections on the lining of the small intestine are called:
b. villi
\(.\)
Answer:
d. mechanical digestion
a. esophagus
b. enamel
c. amino acids
a. vitamin D
c. anemia
d. peristalsis
b. pepsin
a. chyme
c. absorption
b. mucus
a. chemical digestion
b. small intestine
c. malnutrition
b. villi
Not 100% sure on some of these but very positive on most of them :) Hope this helps.
Explanation:
Scientists have discovered that there is as much feedback as feedforward circuitry in the brain. How
does this challenge the assembly-line model of visual processing?
The assembly-line model of visual processing assumes that visual information flows in a strictly feedforward manner, meaning that it moves in a linear direction from the retina through various processing stages in the brain until it reaches the final visual cortex, where a conscious perception of the visual scene is formed.
This paradigm is put to the test by the finding that feedforward and feedback circuitry coexist in the brain, indicating that visual processing is far more dynamic and sophisticated than previously believed. When visual information progresses through the processing hierarchy, feedback connections enable information to flow backwards from higher processing stages to lower processing stages in a constant modulation and refinement process.
This visual information flow in both directions shows that visual processing is a multifaceted, interactive process rather than a strictly linear one. At all levels of the processing hierarchy, the feedback linkages enable top-down influences like attention, expectancy, and context to shape and alter the processing of incoming sensory information. factors.
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The molecules of water move farther apart in the water cycle and water changes from the?
Explanation:
I think the ans is evaporation
What is the main function of the cell membrane of a cell?
A. to exchange nutrients and the cells waste with the external environment
B. to limit the size that cell can reach
C. To organize the cell's internal contents
D. to protect the cell from harmful substances in the environment
Answer:
D. to protect the cell from harmful substances in the environment
Explanation:
Cell membrane is also known as plasma membrane is a biological membrane that differentiate the internal organelles of the cells from the outside environment. Cell membrane is made up of phospholipid bilayer with embedded proteins.
The main or primary function of cell membrane is to protect cell from harmful substances in the environment as it is the outer convering of the cell. cell membrane regulates movement of substances in and out of cells which restricts entry of harmful substances and hence called as selectively permeable membrane.
Hence, the correct option is D.
Which parent combination(s) yield a mixture of black and white offspring?
Answer:
Explanation:
When considering the inheritance of traits such as coat color in animals, there are several ways in which black and white offspring can be produced. One possible scenario involves a cross between two individuals with heterozygous genotypes for coat color, meaning that each parent carries both a dominant and recessive allele for coat color. In this case, the offspring have a 25% chance of inheriting two dominant alleles and being completely black, a 50% chance of inheriting one dominant and one recessive allele and having a black and white spotted coat, and a 25% chance of inheriting two recessive alleles and being completely white. Other combinations of parental genotypes can also result in a mixture of black and white offspring, depending on the specific genetic inheritance pattern involved.
The human skeletal system has many important functions, including movement. As a person ages, movement can become difficult. Ligaments become less elastic and cartilage is damaged. 7. Considering the function of ligaments, explain why less elastic ligaments could cause movement to be difficult. 8. Considering the function of cartilage, explain why damaged cartilage could cause movement to be difficult. 9. Identify two functions of the skeletal system besides movement.
During the second trimester, a white, cheeselike substance called ________ emerges on the skin of the fetus.
During the second trimester, a white, cheeselike substance called vernix emerges on the skin of the fetus.
Vernix, a protective layer, develops on a developing baby's skin throughout pregnancy. It is a greasy, thick material that forms a moisturizing barrier on your baby's skin and is composed of proteins, fatty acids, and water.
After all, life in amniotic fluid is somewhat similar to swimming in a pool. Baby's sensitive skin is shielded and moisturized by the vernix, preventing chapping and wrinkling. Vernix serves numerous crucial functions throughout pregnancy, childbirth, and even the postpartum period, thus it is more than simply a moisturizer.
Additionally, some of it globs into the ear canal, possibly shielding the infant from loud noises.
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6 ways of expressing standard atmospheric pressure(physical science)
6 ways of expressing standard atmospheric pressure include: millimetres (or inches) of mercury, pounds per square inch (psi), dynes per square centimetre, millibars (mb), standard atmospheres, and kilopascals.
Where do we find human genetic information?
nucleus
asexual reproduction
cloning
mitochondria
Answer:
Nucleus
Explanation:
B and C are just wrong and D is the powerhouse of the cell
The purpose of the nucleus is to store genetic info.
Answer:asexual reproduction
Explanation:
At what point does homeostasis of blood glucose break down in Type I Diabetes
mellitus?
1. effector
2. control center
3. Receptor
Option(2) is the correct option.In Type 1 Diabetes Mellitus, the breakdown of homeostasis of blood glucose primarily occurs at the level of the control center, which is responsible for regulating blood glucose levels.
Homeostasis is the body's ability to maintain stable internal conditions, and in the case of blood glucose, it involves keeping glucose levels within a specific range. Normally, the control center for blood glucose regulation is the pancreas, which produces and releases the hormone insulin in response to rising blood glucose levels.
In Type 1 Diabetes, the immune system mistakenly attacks and destroys the insulin-producing cells in the pancreas. As a result, the pancreas is unable to produce sufficient insulin or any insulin at all. Without insulin, glucose cannot enter cells to be used as a source of energy, leading to elevated blood glucose levels (hyperglycemia).
This malfunction in the control center disrupts the feedback loop that regulates blood glucose levels. In a healthy individual, when blood glucose rises, insulin is released to facilitate the uptake of glucose by cells, which helps bring down blood glucose levels.
The receptor and effector components of homeostasis (option 1 and option 3) can still function properly in Type 1 Diabetes. Receptors in the body, such as specialized cells in the pancreas and other tissues, can detect high blood glucose levels.
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what is the difference between channel proteins and carrier proteins
Answer:
Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.
Explanation:
Hope It helps