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Related Questions
Which two parts of the cell are unique to plant cells?
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Answer:
Cell wall, chloroplast, vacuole. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Explanation:
The main difference between plant cells and animal cells are cell wall and chloroplast , whereas for the vacuole plants have a vacuole called vescile which is not the same as the vacuole in plant cells.
Vacuoles are very large as they are needed to store water and they mostly contain water and sugars . On the other hand, vesicles are small and contain water, nutrients, enzymes, wastes, solution of water or food etc. This is the key difference between vacuoles and vesicles. hope it helps :)
What are humans three main sources of ATP?
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The three main sources of ATP in human cells include proteins, lipids and carb biomolecules.
What are proteins, lipids and carb biomolecules?Proteins, lipids, and carbs are biomolecules that are used by the body to synthesize ATP through different processes such as for example cellular respiration and glycolytic fermentation pathways, which si less efficient in terms of energy generated by the same amount of biomolecules.
Therefore, with this data, we can see that proteins, lipids and carb biomolecules are used to generate ATP, being carbohydrates the main source for such a purpose in the cell.
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Internal adaptations are the traits created by an evolutionary process whereby a population becomes better suited to its habitat by adapting the function of its internal structures. What is an internal adaptation birds have that makes them well suited for flight? A) Beak B) Hollow bones C) Smooth feathers D) Crop and gizzard
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Answer:
B) Hollow bone
Explanation:
Air sacs are attached to the hollow areas in a bird's bones. Essentially, their lungs extend throughout their bones. This helps birds take in oxygen while both inhaling and exhaling. This adds more oxygen to the blood, providing a bird with extra energy for flight.
Answer:
B hollow bones
Explanation:
8. What will happen if a base sequence of a strand of DNA is changed from A-T-G to A-T-C?The mRNA will be changed from U-A-C to T-A-C.The mRNA will be changed from T-U-C to T-U-G.The mRNA will be changed from C-A-U to C-A-C.The mRNA will be changed from U-A-C to U-A-G.
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If a base sequence of a strand of DNA is changed from A-T-G to A-T-C, the mRNA will be changed from U-A-C to U-A-G.
List and explain FIVE (5) uses of the beta-amylase enzyme.
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The FIVE (5) uses of the beta-amylase enzyme include;
.β-Amylase is used in the mashing and brewing process. It produces enough maltose, which is the most important fermentable sugar.
.It is used in the production of malt and beer as an additive in foodstuff.β-Amylase at controlled temperature breaks down starch into maltose, dextrins, oligosaccharides, and glucose molecules.
.β-Amylase is utilized in the production of maltose-rich syrup.
.It is used as a sweetener in food and pharmaceuticals due to its mild sweetness and lack of color formation.
. β-Amylases also slow down starch retrogradation, thus maintaining the quality of bread and preventing it from drying.
What is a β-Amylase enzyme?
This enzyme speeds up the hydrolysis of the second α-1,4 glycosidic bond, cleaving off two glucose units (maltose) at a time acts . They act on starch, glycogen, and other polysaccharides and oligosaccharides to give tt-maltose by an inversion.
Beta-amylase can be seen in bacteria, fungi, plants, bacteria, and cereals. During the ripening of fruit, β-amylase disintegrates starch into maltose, giving rise to the sweet flavor of ripe fruit.
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Develop a drug that decreases the cell density of the microbial infection.The following is an excerpt from a scientific paper written by Pan & Ren.Since the discovery in 1960s, a cell-cell signaling system known as quorum sensing (QS) has been identified in numerous microbial species. During cell growth, small signaling molecules are synthesized and secreted into the surrounding environment. As a result, the local QS signal concentration increases with cell density. When the cell density is above a certain threshold, a significant amount of signaling molecules bind to intracellular or membrane receptors and trigger the expression of a series of genes to control a wide spectrum of phenotypes.Pan, J. & Ren, D. (2009). Quorum sensing inhibitors: a patent overview. Expert Opinion on Therapeutic Patents, 19(11), 1581-1601. doi:10.1517/13543770903222293Some microbes use QS signaling pathways to trigger the expression of virulence genes. The expression of these genes enhances the virulence, or harmfulness, of the microbial infection.Which of the following represents the best method to decrease the virulence of a microbe capable of QS?
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The best method to decrease the virulence of microbe capable of QS is to develop a drug that decreases the cell density of the microbial infection.
What is meant by virulence?An ability of an organism to infect the host and cause a disease is described as virulence. Virulence factors are molecules that assists the bacterium to colonize the host at the cellular level. And these factors are secretory, membrane associated or cytosolic in nature.
Exotoxins is one of the most significant virulence factors of bacteria. is When released by bacteria, exotoxins interrupt and dysregulate important cellular processes. They also help in the bacterial proteins' capacity to invade tissues.
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How would you explain the key concepts for the CWA in less than two minutes?
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Answer:
Explanation:
vPoint Source - a source of water discharged to surface water through a discrete point - generally through a pipe, ditch, or channel.
Nonpoint Source - Nonpoint sources, such as parking lots or athletic fields, discharge runoff water to groundwater or surface water; runoff does not come from a pipe, ditch, or channel. These sources may contain pollutants such as pesticides, motor oil, and soaps.
Navigable Waters of the United States For the purposes of the Clean Water Act, the term "navigable waters" includes:
all waters used in commerce, including groundwater;
all interstate waters including wetlands, mudflats, and sand-flats; and
all other waters such as lakes, rivers, streams, wetlands and sloughs.
EPA policy states, "The majority of facilities in the U.S. have the potential to discharge to navigable waters." The Supreme Court decision in (2006) requires the Army Corps of Engineers and the EPA to determine whether there is a "significant nexus" between a navigable waterway and an area a spill might affect. In June of 2007, EPA and the Army Corps of Engineers released provisional interpretive guidance regarding the "significant nexus” question. According to this guidance, the agencies will assert jurisdiction over traditional navigable waters, wetlands adjacent thereto, and relatively permanent tributaries thereof. The agencies will generally not assert jurisdiction over swales and ditches that lack routine water flow. Finally, the agencies will apply the "significant nexus" requirement and make a case-by-case, fact-specific analysis on impermanent tributaries and other wetlands.
Additional executive orders were issued 2015 in 2019. Under the 2019 proposal, traditional navigable waters, tributaries to those waters, certain ditches, certain lakes and ponds, impoundments of jurisdictional waters, and wetlands adjacent to jurisdictional waters would be federally regulated. It also details what are not "waters of the United States," such as features that only contain water during or in response to rainfall (e.g., ephemeral features); groundwater; many ditches, including most roadside or farm ditches; prior converted cropland; stormwater control features; and waste treatment systems.
Could the requirement for one or more NPDES Discharge Permit apply to my campus?
If your campus discharges pollutants directly to navigable waters of the United States through a point source, you must obtain an NPDES permit or redirect the flow of the waste.
Stormwater releases from certain activities require an NPDES permit. The most common activities on college campuses requiring NPDES permits for stormwater are construction activities disturbing more than 1 acre, hazardous waste storage areas operating under the Resource Conservation and Recovery Act permit system, steam-generating power plants, and airports. See Stormwater section below.
Regulations issued by local water authorities, or Publicly Owned Treatment Works (POTWs), not NPDES permits, govern discharges into sanitary sewer systems. See Sewer Use (POTW) section below for more information about requirements for using POTWs for commercial or industrial waste disposal.
What do I have to do related to NPDES Discharge Permits?
Determine where wastewater flows from buildings and processes on your campus. Any industrial or commercial operation (e.g., ice rink melt pits, floor drains, and vehicle wash stations) that discharge into a water of the United States may require an NPDES permit. If required, you must obtain such a permit from the appropriate regulatory agency, probably your state environmental agency.
French drains, dry wells, and septic system leach fields are different from point source discharges because they do not immediately affect surface water. Some state and federal environmental agencies manage these systems under the Underground Injection Control program, part of the Safe Drinking Water Act. See Safe Drinking Water Act for more information.
Details of NPDES
Which of the following is a feature of beaches?
A. Berms
B. Runnels
C. All of these
D. Shingles
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Answer:
C: All of these.
Explanation:
Because there is feature
What is the name of this monomer ?
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Answer: This is Glucose which is a Monosaccharide as a monomer
Explanation:
PLS HELP ITS DUE TODAY
Explain the benefits and limitations of each type of scientific investigation.
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Answer:
BENEFITS:
The Descriptive investigation is used to describe a natural system when nothing or very little is known about the system. Like observing a new specimen in the microscope and describing it by observing the specimen.
A comparative analysis is used to compare two or more variable in nature by collecting data like observing the different colors of the rocks. It provides the data to show the similarity and dissimilarity of the population.
The Experimental investigation is used where experiments are performed to test and answer the scientific questions. The advantage is that data can be used as evidence for future research.
LIMITATIONS:
descriptive method of investigation
It cannot be used to correct variable or be used to determine causes and effect of the problem
experimental method of investigation
It might create an artificial situation that do not always represent the real life situation
comparative method of investigation
It is not easy to control other variables that might influence the study
Ngl, I just copy and pasted these answers from another brainly question
Why does the body respond to stress?
A. ) to defend itself
B. ) to reserve its resources
C. ) to fully restore motor activity
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Answer:
a
Explanation:
Answer:
It could either be A) to defend itself or C) to fully restore motor activity
Explanation:
Random question would u prefer foxes or lion?
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Answer:
lions
Explanation:
I would prefer lions because of their size and looks.
need help please.....
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Answer:
1. F
2.A
3.E
4.D
5.B
6.C
Explanation:
I believe this is the correct order- forgive me if I'm wrong; The wording for options A and B are slightly confusing.
Sarah works at the zoo, dealing primarily with mammals. She often works with monkeys, apes, kangaroos, and wombats. Which types of mammals does Sarah work with most frequently?
1.placental mammals only
2.monotremes and marsupials
3.marsupials only
4.marsupials and placental mammals
Help please!
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Answer:3
Explanation: Marsupials only.
A concept which suggests that a historical event affects a cohort differently than it affects subsequent cohorts because of the life phase in which it occurred is called
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A geneticist is studying sexual reproduction of a species of butterfly that lives in a very cold climate. He hypothesizes that there should be low genetic diversity because it is well adapted to the cold climate but does not seem to be able to colonize surrounding areas with warmer climates. What important principle is he using to formulate his hypothesis?
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Answer:
It is a stenotopic species.
Explanation:
Stenotopic species are well adapted to specific environmental conditions. Stenotopic species can't colonize new environments because they are adapted to a narrow range of environmental conditions. On the other hand, the eurytopic species can survive and reproduce in a wide range of environments.
In this case, the geneticist has used a hypothetico-deductive framework, where this butterfly was distinguished by species boundaries based on its sampling distribution.
Whether an object becomes positively or negatively charged depends on the material it (repels/contacts).
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The charge an object acquires depends on the materials it contacts and the relative affinity of those materials for electrons.
What is Charge?
Charge is a fundamental property of matter that describes the electrical property of particles, such as electrons and protons. It is a conserved property, which means that the total amount of charge in a closed system cannot be created or destroyed, only transferred from one object to another.
When two objects come into contact, they can transfer electric charges between them. The object that loses electrons becomes positively charged, and the object that gains electrons becomes negatively charged. This process is called triboelectric charging, and it is responsible for many everyday phenomena, such as static electricity.
The exact way in which an object becomes charged depends on the nature of the materials involved, as some materials have a greater affinity for electrons than others. For example, when you rub a plastic comb through your hair, the comb becomes negatively charged because it has a greater affinity for electrons than your hair does. On the other hand, if you rub a glass rod with silk, the glass rod becomes positively charged because it has a lower affinity for electrons than the silk does.
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Which gas accounts for the largest percentage of greenhouse gases in the atmosphere?
O carbon dioxide
O nitrous oxide
O water vapor
Answers
Answer:
I do believeCarbon Dioxside
Explanation:
I remember this question from one of my biology classes
A reaction has a negative reduction potential.
A reaction has a negative reduction potential.
The reverse reaction would be an oxidation reaction.
The reaction would be spontaneous if reversed.
The products of the reduction reaction want to lose electrons.
If reversed, the reaction would be both a spontaneous reaction and an oxidation reaction.
All of the above.
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The correct answer is: All of the above.
When a reaction has a negative reduction potential, it indicates that the reaction is more likely to undergo oxidation rather than reduction. Therefore, the reverse of the reaction would be an oxidation reaction.
Since the reverse reaction is an oxidation reaction, it would be spontaneous if the original reaction was spontaneous in the forward direction. Spontaneous reactions tend to occur naturally without the need for external energy input.
The products of the reduction reaction, in this case, would be the species that gained electrons. Therefore, they would have a tendency to lose electrons, making them more prone to undergo oxidation.
So, all the statements are true.
Which hypothesis is supported by the data?
A. The milkweed population is a biotic factor that decreaded as amount of sunlight an abiotic factor increased.
B. The milkweed population is an abiotic factor that decreased as the amount of sunlight a biotic factor decreased.
C. The milkweed population is an abiotic factor that decreased as the amount of sunlight a biotic factor increased.
D. The milkweed population is a biotic factor that decreased as the amount of sunlight an abiotic factor decreased.
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The number of known species is about_____million?
A 17 million
B 1.7 million
C10.7 million
D11.7 million
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Which is the first step in building a solar system from a solar nebula?
O A. An explosion disturbs the gas and dust in the nebula.
B. The nebula collapses.
C. Matter accumulates.
O D. Spinning matter increases in temperature.
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Answer:
A) An explosion disturbs the gas and dust in the nebula.
Explanation:
You are welcome <3
You conduct an experiment to determine the concentration of ions in an unknown solution. You place 300mL inside a dialysis bag and place the bag into a beaker of water with an ion concentration of 100 ppm (parts per million). When you check the experiment an hour later, the bag is swollen and has taken in water. What can you conclude?
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The conclusion is that water has moved from the beaker into the bag by osmosis because concentration of solute in the beaker is lower than that in the bag.
What is osmosis?Osmosis is the movement of water molecules across a semipermeable membrane from a solution of low solute concentration to one of high solute concentration.
The concentration of solute in the beaker is lower than that in the bag, therefore, water will move from the beaker into the bag by osmosis.
In conclusion, the solution in the beaker is of lower solute concentration than in the bag.
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Lead released into the environment makes its way into the air, soils, and water and can remain in the environment as dust, indefinitely. The EPA and the Centers for Disease Control and Prevention (CDC) agree that there is no known safe level of lead in a child's blood. Lead is harmful to health of all age groups, but especially children. The U. S. has banned leaded gas and leaded paints, yet this toxin is still found in our drinking water. What is the MAIN cause of lead inner drinking water?
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Answer:
Lead enters drinking water through corrosion especially where the water has a high acidity or a low mineral content that corrodes pipes and fixtures.
Explanation:
SOMEONE PLZ HELP!!!!!!!!!
Answers
Answer:
Organelle :)
Explanation:
What is the economic importance of mature fresh egg of catfish
Answers
One of the economic importance of mature fresh egg of catfish is they are use for seed production.
Catfish mature egg explained.
Mature catfish egg has several economic importance in aquaculture and these are;
They are use for seed production: catfish eggs are use for producing fingerlings which are stock in ponds to produce table size fishes.Export; The catfish eggs are normally exported to region where there is no catfish and they are exported frozen to improve their shelf life and also reduce spoilage.Income generation: catfish matured eggs can be use for income generation, they are sold to get income to buyers.Genetic improvement: selective breeding use mature catfish eggs to get trait or desirable traits such has high growth rate, resistance to disease and so on.Research: matured catfish eggs are use for research to study fish embryology, physiology and genetics.In summary mature fresh egg of catfish has economic importance in aquaculture.
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QUESTION: Foresters plant new trees to replace trees that have been cut down. This is a type of
CHOICES:
sustainable practice
reliable method
community action
ecosystem revision
Answers
Answer:
D, ecosystem revision :)
Answer:
Sustainable Practice
Explanation:
If you cant sustain the forests there will be nothing left. Plus got it right on the test.
Label the structures and tissue types of skin histology by clicking and dragging the labels to _ the correct location: Epidermis of skin Reticular layer of dermis Dense irregular connective tissue Papillary layer of dermis Stratified squamous epithelium Dermis of skin Areolar connoclivo
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Skin is the largest organ of the body, consisting of the layers of the dermis and epidermis and different connective tissues.
What is skin histology?Skin histology is the study of tissues and cells of skin under a microscope.
The correct labeling of skin is:
Marking on the left side ( the side around the labels given, from top to bottom)
1. Epidermis layer of skin
2. Dermis layer of the skin
Marking inside the figure from above to below
A. Areolar connective tissue (left side top one)
B. Stratified squamous epithelium (right side top one)
C. Dense irregular connective tissue (below one)
Marking of the right side (from top to bottom, the side far to the labels:)
1. Papillary dermis layer
2. Reticular dermis layer
Therefore, it suggests the further parts of the integumentary system (skin).
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The given question is incomplete, so the most probable complete question is,
Label the structures and tissue types of skin histology by clicking and dragging the labels to _ the correct location: Epidermis of skin Reticular layer of dermis Dense irregular connective tissue Papillary layer of dermis Stratified squamous epithelium Dermis of skin Areolar connective.
The image is attached below,
The_ of the cell directs cell activity and acts like the control center.
Answers
Answer:
Nucleus
Explanation:
The Nucleus is the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Answer:
nucleous
Explanation:
itacts like the control center
Which idea is not in the correct position on the chart?
A. Biomass Fuels
B. Natural gas
C. Wind
D. Geothermal energy
*If you cant read the top of the chart it says:
Alternative Energy Sources | Fossil Fuels*
Answers
Answer:
Biomass Fuels, Geothermal energy