Antibiotics are substances that inhibit the growth of other organisms, such as bacteria, but also our very own cells. These molecules are naturally produced by fungi and were discovered by Fleming in 1928. The answer option that better describes this is the last one: "D. a naturally occurring substance produced by microorganisms that inhibits the growth of or kills other microorganisms".
Antibiotics are substances that inhibit the growth of other organisms, such as bacteria, but also our very own cells. These molecules are naturally produced by fungi and were discovered by Fleming in 1928. The answer option that better describes this is the last one: "D. a naturally occurring substance produced by microorganisms that inhibits the growth of or kills other microorganisms".
You are trying to determine the cause of Albinism in Gorillas. You begin by isolating the gene for skin pigment in a normal gorilla (sample 1) and in an albino gorilla (sample 2). You compare them to see what is different. Sample 1: ATTACAGTACTGGCA Sample 2: ATTACAATACTGGGCALooking at the sequences carefully you determine it is a __________ mutation.A. SubstitutionB. InversionC. InsertionD. Deletion
Here we are comparing the DNA sequence of the gene for skin pigment in a normal gorilla (sample 1) and an albino gorilla (sample 2).
The sequences are the following:
Sample 1
ATT ACA GTA CTG GCA
Sample 2
ATT ACA ATA CTG GGC A
We can see that the sequences have different lengths, sample 1 has a length of 15 base pairs (bp), while sample 2 has 16 bp. This means there is an extra nucleotide, so this is an insertion mutation.
This means the correct answer is C. Insertion
A man (A+) and a women (B+) are expecting a baby together. Make a two-trait (dihybrid) Punnett square and determine the probability of each blood type in their offspring. A+ ___:16B+ ___:16AB+ ___:16O+ ___:16A- ___:16B- ___:16AB- ___:16O- ___:16
A+ _3__:16
B+ __3_:16
AB+ _3__:16
O+ _3__:16
A- _1__:16
B- __1_:16
AB- _1__:16
O- __1_:16
DNA is a long molecule that carries genetic information. it is made up of small units called nucleotides. A nucleotide has a
DNA is a long molecule that carries genetic information . it is made up of small units called nucleotides . A nucleotide has a phosphate group a 5 carbon sugar called bases and one of nitrogen containing region. The purines include adenine and Thymine . The pyrimidines include cytosine and guanine.
DNA is composed of a series of molecules called nucleotides. each nucleotide is itself made up of three primary components: a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a phosphorus-containing region known as a phosphate group attached to the sugar. The nitrogen bases are adenine , thymine, guanine, and cytosine .
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What is the role of environmental factors, such as altitude and heat, in very long-distance run or other performances lasting one to four hours? becomes limiting in terms of energy production?
The role of environmental factors in very long-distance run or other performances is that the longer the performance, the greater the chance that environmental factors play a role in the result and is a limiting factor.
What is Energy?This is referred to as the ability or the capacity to do work and examples include the following: potential, chemical energy etc.
The longer the performance, the greater the chance that environmental factors play a role in the outcome and they become limiting in terms of energy production because they are able to restrict or influence certain activities needed for its generation.
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Look up one prion disease and describe it here. What population does this disease infect? How is it usually transmitted? How common is it? What are the major symptoms? Be sure to cite your sources.
Kuru is a Transmissible spongiform encephalopathy which was formerly common among the Fore people of Papua New Guinea. This disease is caused by a prion, i.e., a protein that can trigger other proteins in the brain to fold abnormally. The abnormally folded proteins in the brain cause neurodegeneration which ultimately lead to death. The main symptom of the Kuru disease is the loss of coordination and control over the muscle movements. The transmission of Kuru was because of a ritual in which Fore people consumed body parts of their family members just after their death. The Fore people stopped to eat human meat in the early 1960s, causing the kuru epidemic to decline dramatically. It is not certainly known if the last kuru victim died in 2005 or 2009.
Pleaseeee answer!!
Four friends wrote down their descriptions of sleet and hail.
Dan: Sleet is small, frozen ice pellets that melt and refreeze as they pass through different layers of air, while hail is usually formed as larger chunks of ice during thunderstorms.
Julie: Sleet is a mixture of solid ice pellets and liquid rain, while hail is usually formed as water droplets at above freezing temperatures.
Patsy: Sleet is liquid water in the form of drops that fall through air temperatures above freezing, while hail is a mixture of rain and snow that usually forms during thunderstorms.
Timothy: Sleet is formed when water vapor freezes to form ice crystals that join to form flakes, while hail is formed as a chunk of ice during thunderstorms.
Which friend wrote the most complete and accurate description of sleet and hail?
a) Dan
b) Julie
c) Patsy
d) Timothy
How do abiotic and biotic factors work together within my ecosystem provided (Excuse the sloppy drawing I made, I really tried)
Within an ecosystem, there are different components that are part of it and that work together, and this interaction, ideally, creates an equilibrium in the ecosystem.
In the picture, we can see one abiotic factor such as the sun, that it's fundamental to the development of some biotic factors such as the producers. Some other abiotic factors could be water or minerals on the soil that plants use to survive. Later on, in the food chain, we can see how different types of biotic factors interact, being the producers eaten by the primary consumers, and so on. When the biotics factors die, they are decomposed by the decomposers such as fungi, producing organic and inorganic matter, closing the cycle.
True or FalseDarwin theorized that the forces seen today in the biological world such as reproduction, inheritance, and competition gradually produce the whole diversity of life on Earth.
The correct answer is FALSE. Although Darwin, indeed recognized reproduction and competition as important drivers of global biodiversity, he did not included the role of inheritance. Rather, he emphasized the role of competition and natural selection.
I need help with this practiceThe subject is about the invasive species KudzuTake your time to review the photo and then answer in your own words shortly
• They can be introduced to an area by ship ballast water, accidental release, and most often, by people. Invasive species can lead to the extinction of native plants and animals, destroy biodiversity, and permanently alter habitats.
,• Biodiversity plays a crucial role in human nutrition through its influence on world food production, as it ensures the sustainable productivity of soils and provides the genetic resources for all crops, livestock, and marine species harvested for food.
Which environmental change is most likely to affect the long-term stability of an ecosystem? A. Monarch butterflies migrating to breed., B. The introduction of kudzu an invasive plant species., C. A dry winter decreasing plant populations., D. Humans building a sustainable hiking path
Answer:
B
Explanation:
Because the growth of the plant will take time leading into the future.
Tabulate in detail the comparison among Simple Diffusion, Facilitated Diffusion, and Active Transport across a cell membrane.
The cell has several types of membrane transport alternatives, being the simple diffusion, facilitated diffusion, and active transport one of the options for the cell to exchange molecules between internal and external environment.
The types of cell transport:
1 - Simple Diffusion: is a process that does not need energy (passive), used to transport small and nonpolar molecules from a region of higher concentration into a region of lower concentration (in the gradient concentration direction);
2 - Facilitated Diffusion: is a process that does not need energy (passive), used to transport larger ions and polar molecules with the help of carrier proteins or pore proteins (transport proteins);
3 - Active Transport: There is two types of active transport, primary active transport is used for molecules moving against their gradient coupled to the hydrolysis of ATP, and secondary active transport is for molecules going with more molecules against their gradient. It is a process that needs energy (active) to happen, going always against the gradient of concentration of the cell.
1. Why is the band in lane 2 not as bright as lane 3? They are both restriction digests on two different DNA plasmids.
2. Lanes 5-6 are PCR products. How do the inserts reflect on the restriction digest in lanes 8-9?
3. Are PCR products smaller or larger than corresponding restriction digest fragments?
Larger DNA molecules travel more slowly across the gel matrix during electrophoresis than smaller ones do. As a result, the DNA molecules divide into different bands according to their respective sizes. The quantity of DNA that builds up in a band determines how black the band is.
Which PCR products travel more quickly, big DNA fragments or little ones? Why?Because DNA is negatively charged, it gravitates toward the positive electrode. All DNA fragments flow through the gel at the same speed because they all have the same mass-to-charge ratio.
A PCR result must frequently be further altered by cleavage with restriction enzymes. Without any DNA purification, restriction enzyme digestion may be carried out quickly and easily right in the PCR mixture.
The PCR primers' structure determines the size of the PCR result. To amplify an area of interest from a double-stranded DNA template, the user designs PCR primers. Always two primers are present, and they are made to border the area.
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How were these Native American Children forced to assimilate?
the native american children were forced to assimilate by forcing them to attend boarding schools they were forced to learn english, wear uniforms and force to study under study standards
What is the difference between a prophage and a provirus?
A prophage is a viral genome that infects bacterial cells, thus it integrates into a bacterial genome; while a provirus is a viral genome that integrates into an ekcaryotic genome.
The process of transporting materials in a cell involves a positive change in the amount of free energy in the cell. Which of the following best describes how this process affects the cell?The process is non-spontaneous and causes an increase in entropy.The process is non-spontaneous and moves the cell away from equilibrium.The process is spontaneous and can be used to do work in the cell.The process is spontaneous and releases heat to the cell's surroundings.
The process is non-spontaneous and causes an increase in entropy.
The process is not automatic even thoug it involves transportation of materials in a cell. There is a change in the amount of free energy but there is entropy.
What effect did the human population have on Easter Island? How did they change the island's natural cycling of matter and energy?
The effects of the human population on Easter Island led to the ecocide hypothesis.
The island's carrying capacity for sustainable crops was exceeded by human populations, which led to a significant loss of forest cover. Its natural cycle of matter and energy likewise decreased or changed, and as a result, the population fought over the island's limited resources.
They turned to cannibalism since they were short on food and starving. In the years 1862 and 1863, blackbirds also plagued the island. The palm tree seeds are thought to have provided food for the growing rat population, according to archaeologists.
This theory was in line with discoveries made on other Polynesian islands. The rats and human activity would have eventually caused the tree population to dwindle. Hunt used the "rat plague" as the basis for his theory regarding Easter Island's deforestation.
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Identify the part of the heart.A) AortaB) Inferior vena cavaC) Superior vena cavaD )Pulmonary vein
The image points to a vessel that comes from the bottom of the heart and reaches its top to attach to it on the top. It is called aorta.
Therefore, the correct answer is A) Aorta
Why might protists like a euglena or algae not have a gullet or oral groove?
Protozoans like paramecium have protoplasmic invasions called gullets, which aid in these species' food uptake and digesting.
What are protists?Protists have eukaryotic cells, as opposed to bacteria, these organisms feature cytoplasmic membrane-bound components as well as a nucleus that is membrane-bound.
Another kind of protists is zooflagellates, they resemble animals and use flagella to move. Flagella are whip-like organelles that rapidly spin and help an organism move through the water like a boat's propeller.
The majority of zooflagellates have one to eight flagella that aid in movement, protists do not belong to a monophyletic group of creatures.
Therefore, The paramecium's gullet functions as the buccal cavity where food is transformed into food vacuoles for digestion.
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Give a general description of these two species •Wolf spider•Eastern gray squirrel(What are the roles they have in an environment? what do they look like? What do they eat?)
When we consider species like the ones the question tells us about, we usually one faces an example of predation, since squirrel can behave as tertiary consumers for spiders, which are then secondary consumers. So the roles they develop in the environment can be named as population maintenance (especially for the squirrels, because they can control the wolf spider population, and spiders can allow them to continue their population growth).
Proteins provide transport through the cell membrane as…
There are 2 main types of transportations through the cell membrane, in which both have the ability to utilize proteins to allow substances to enter and leave:
0. Active Transport
,1. Passive Transport
Active transport must have ATP in order to allow the protein to be active for transportation. Passive transport doesn't need energy in order to transport a substance across the membrane.
Answer: Protein channels and carrier proteins.
Explanation:
Food Web AssignmentDirections illustrate the flow of energy within the aquatic system below by completing each direction below.SquidBlue WhaleSealKrillPenguinZooplankton1.) Draw in 8 arrows to show how the energy moves to create a food web. You may have to do a little research to help youmake all the correct connections!2.) Where would phytoplankton and the Sun belong in this food web? Draw it as well as an arrow connecting each one accurately.3.) How would bacteria nit into this food web? Describe how you would draw it in. 4.) Classify each of the 7 organisms in the aquatic food web, as well as bacteria, as a producer, consumer or decomposer by writing each into the correct category below. • Producer - • Consumer - • Decomposer -
For the first and second question we have:
Squid eats: Krill
Blue whale eats: Krill
Seal eats: Krill, Squid, Penguins (Only leopard seals)
Krill eats: Zooplankton (and phytoplankton)
Penguin eats: Krill, squids
Zooplankton eats: no one (in the picture, but they eat phytoplankton)
For the third question: Bacteria enter as decomposers in the food web.
Finally, for the fourth question we have:
Producers: Phytoplankton
Consumers: squids, blue whale, seal, krill, penguin and zooplankton
Decomposer: Bacteria
Compare the size and depth of an acetabulum of a hip bone to the glenoid cavity of the scapula.How do these socket differences between the hip joint and the shoulder joint relate to strength and mobility?
Hip joint: It has the presence of ligaments that provides it strongness and musculature. because of these ligaments, allows the 180° movements of the legs. As the leg is used for running or much more physically intense activities the joint between the pelvis and femur that is the ball and socket joint gets so much pressure and stress, but due to its strong reinforcement by the ligaments, it becomes more flexible and strong.
Shoulder joint: As it is located in the scapula and also has the ball and socket joint it provides mobility as we can stretch our arm, and use it for throwing many things so this shows that it has mobility, but this reduces the stability by causing the rotatory injuries. Always remember that shoulder is in the shoulder blade which is mobile and this makes it risky and susceptible to injuries.
Conclusion: The scapula has mobility and we can see the upward and downward movement in it so this makes the shoulder joint more mobile but less stable as compared to the hip joint which has more stability.
Which of the following is an example of role strain?
A. Derek attends law school and becomes a lawyer, though he dreams of one day becoming the next John Grisham.
B. Krista lands a role on Days of Our Lives and begins receiving fan mail from fans across the country.
C. Alex takes a sabbatical from his job as a professor of Molecular Biology to raise his two young children.
D. Becca returns to work after giving birth to her daughter, finding it difficult to act as mother, wife, and executive.
The example of role strain in the given ones is "Becca returns to work after giving birth to her daughter, finding it difficult to act as mother, wife, and executive." The correct option is D.
What is role strain?Role strain is a strain that someone feels when they are assigned to a single role that requires them to perform multiple functions.
For example, Becca has given birth, but her role requires her to be a wife, mother, and executive.
All of these roles have responsibilities that she must fulfill, which can be very taxing and stressful on one person, resulting in role strain.
Thus, the correct option is D.
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Taste buds are located within the circumvallate and fungiform papillae. A) TrueB) False
There are four types of tongue papillae: (1) filiform, which is thin and wired shape and no taste buds, (2) fungiform, which is mushroom-shaped near the middle and with taste buds, (3) foliate, which is leaf-shaped near the sides and with taste buds, and (4) circumvallate papillae, which is whorls at the sides and with taste buds.
ANSWER: TRUE. There are taste buds in the fungiform and circumvallate papillae.
What’s the correct answer answer asap for brainlist
Answer: B
Explanation:
PLEASE HELP!! WILL GIVE BRAINESTWhich of the following is the desired outcome of attaching streamers to the back of boats?Keeping birds from becoming tangled in fishing lineProviding habitat for lobstersReducing overall bycatch from drift nettingRemoving floating debris from the water
Answer:
Keeping birds from becoming tangled in fishing line.
Which has the highest potential energy - glucose or glycogen?
Glucose is referred to as the compound which has the highest potential energy.
What is Potential energy?This is referred to as the type of energy which is possessed by a body by virtue of its position and is depicted by the state of rest of a body or compound.
Glucose and glycogen are compounds which helps supply energy to the cells of the body so as to enable them perform their daily activities. Glucose however has the highest potential energy because it has more bonds and also means there is more energy available to perform different types of reactions.
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50 Points
Describe at least ten biotic factors found in California's ecosystem and at least ten abiotic factors. Give at least two examples of food chains that could be found in California's ecosystem.
A biotic factor is a living organism that shapes its environment.Food webs connect many different food chains, and many different trophic levels. Food webs can support food chains that are long and complicated, or very short.
describe the process of gaseous exchange between alveoli air and blood
The bloodstream receives oxygen from the lungs during gas exchange. Carbon dioxide leaves circulation enters the lungs. Between the alveoli and network of tiny blood arteries known as capillaries are the lungs.
What is the main function of gas exchange ?The waste gas carbon dioxide is exchanged for oxygen at each cell in your body. This waste gas is then transported by your bloodstream back to your lungs, where it is expelled after being eliminated from the bloodstream. Gas exchange, a crucial activity carried out automatically by your lungs and respiratory system, is a fundamental function.
How is gas exchange in the body?While carbon dioxide diffuses into the alveoli and is later breathed out of the body, oxygen diffuses from the alveoli into the capillaries, which carry it out of the lungs and to the rest of the body. The respiratory membrane serves as a barrier for the exchange of oxygen and carbon dioxide.
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What’s this please help
Answer: The Ocean
Explanation: The ocean contains a vast amount reservoir of carbon this is because of the organisms in the ocean that take carbon dioxide.