Answer:
A
Explanation:
Yes
Answer:
B. Using negative feedback to increase its internal temperature when it falls below its normal range
Explanation:
The question asked about INTERNAL temp and how its stbalized, we know that MOST to ALL of negative feedback is getting the organism to return to its original state, high body temp was its original state, therfore,Using negative feedback to increase its internal temperature when it falls below its normal range, is the correct answer.
Convection currents are powered by:
A. Heat
B. Motion
C. Pressure
D. Density
If you’re gonna guess, do not bother commenting
7th grade Science *Earth
Which landform was created over millions of years by lava erupting from a hot spot under the ocean floor?
A. the Rocky Mountains
B. Mount Everest
C. the Grand Canyon
D. the Hawaiian Islands
Which statement best describes the purpose of Earth's spheres?
They work together as open systems to cycle matter through ecosystems.
They work independently as closed systems to cycle matter through ecosystems.
They work together as open systems to move matter to living and nonliving parts of Earth.
They work independently as closed systems to move nutrients to living and nonliving parts of Earth.
Answer:
and they work together to drive the processes of the planet.
Explanation:
Earth has four 'spheres,' called the geosphere, hydrosphere, biosphere and atmosphere. These spheres each have unique properties and features, but they are not isolated on Earth, and they work together to drive the processes of the planet.
They work together as open systems to cycle matter through ecosystems. This statement best describes the purpose of Earth's spheres.
What are earths spheres?Lithosphere encompasses the entire solid land of the planet's crust, as well as the semi-solid land beneath it and even the molten core.Hydrosphere is made up of all of the planet's water, which comes in solid, liquid, and gaseous forms. Water comes down to the Earth's surface as precipitation from the atmosphere, rivers and streams along the surface, and groundwater beneath the surface. The majority of the world's freshwater, on the other hand, is frozen.Biosphere is made up of all the living things on the earth. This sphere contains all of the Earth's bacteria, plants, and animals. Living beings establish ecological communities in the biosphere based on their physical surroundings. Biomes are the names given to these types of communities.Deserts, grasslands, and tropical rainforests are just a few of the biomes found inside the biosphere.Atmosphere is made up of all of the air in the Earth's system.The biosphere's organisms are shielded from the sun's UV radiation by the upper atmosphere. It absorbs and emits heat as well. Weather occurs in this sphere as well.
These spheres interact via affecting one another, as well as through biogeochemical cycles and other natural phenomena that each of these spheres influences and causes.
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Which organelle is found in plant cells only? A.7 B.1 C.3 D.6
Bacteriophage .They used the radioactive isotope sulfur-35 to label the of the virus and phosphorus-32 to label the of the virus. They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was . This result indicated that the genetic material inserted by the virus to infect the bacteria was DNA .
Answer:
Bacteriophage
Explanation:
Bacteriophage is nothing but a virus that harms and kills the bacteria.
The Hershey-Chase Experiments is a well known experiment done by scientist, Alfred Hershey and Martha Chase. They conducted the experiment in the year 1952.
It was an extra ordinary experiment which made the world believe that the DNA is the genetic material and not a protein. In their experiment, they tried to find out if the protein coat or the core of the DNA of the virus which enters into the infected cells would help them to understand whether the genes were made of DNA or of protein.
They used sulfur-35 and phosphorus-32 radioactive isotopes to trace the DNA and the proteins.
Answer:
Explanation:
Hershey and Chase started with a virus called a bacteriophage.
They used the radioactive isotope sulfur-35 to label the protein
of the virus and phosphorus-32 to label the DNA of the virus.
They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was 32P.
This result indicated that the genetic material inserted by the virus to infect the bacteria was DNA.
what factor distinguishes the experimental group from the control group
what is the difference between habitats and niche?
Answer:
The role a species plays in the ecosystem is called its niche. A habitat is the physical environment in which a species lives
Answer:
The role a species plays in the ecosystem is called its niche. A habitat is the physical environment in which a species lives:)
when is cystic fibrosis exhibited?
Answer:
Diagnosing cystic fibrosis is a multistep process, and should include a newborn screening, a sweat test, a genetic or carrier test, and a clinical evaluation at a CF Foundation-accredited care center. Although most people are diagnosed with CF by the age of 2, some are diagnosed as adults.
GOTCHU
Answer: Diagnosing cystic fibrosis is a multistep process, and should include a newborn screening, a sweat test, a genetic or carrier test, and a clinical evaluation at a CF Foundation-accredited care center. Although most people are diagnosed with CF by the age of 2, some are diagnosed as adults. Also cystic fibrosis carriers do not have CF and are generally asymptomatic, there is emerging research which is finding that some carriers may have very mild symptoms associated with the genetic mutation. These symptoms may be a very pale shadow of the more severe symptoms someone with CF has.
Explanation:
What particle in an atom determines what element it is?
Answer:
Protons
Explanation:
The number of protons in the nucleus determines which element an atom is, while the number of electrons surrounding the nucleus determines which kind of reactions the atom will undergo. The three types of subatomic particles are illustrated below for an atom of helium—which, by definition, contains two protons.
Three that live in the savanna are lions, giraffes, and elephants. Choose two of these animals. For each one, describe an adaptation that has enabled it to survive in the savanna. Then tell which which animals in the population would be more likely to survive if a dry season was unusually long.
Giraffes and Elephants: Giraffes have adapted a long neck over time letting them eat and access food allowing them to survive. If a dry season was unusually long they would succeed fine because they are able to eat and drink from the trees. Elephants have survived with similar tactics of eating higher up, they have rough skin allowing them to outlast the heat, and only need water after long periods of time.
3. What is the original source of energy for all fossil fuels?
hydrocarbons
photosynthesis
the Sun
cosmic radioactivity
Answer:
the sun
Explanation:
All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.
hope this helps
NEED HELP ASAP.
What is the correct pathway of anaerobic respiration in yeast?
Choose 1 answer:
A.) Glycolysis -> Krebs cycle —> oxidative phosphorylation
B.) Glycolysis -> alcohol fermentation
C.) Glycolysis -> Krebs cycle -> fermentation
D.) Glycolysis -> lactic acid
fermentation
Answer:
B.) Glycolysis -> alcohol fermentation
Explanation:
The correct pathway of anaerobic respiration in yeast is Glycolysis -> alcohol fermentation. Thus option B is correct.
what is alcohol fermentation ?Alcohol fermentation is a complex process where sugars like glucose, sucrose, and fructose are converted into ethanol, carbon dioxide, and other metabolic by-products, these products are mainly contribute to the sensorial properties and chemical composition of the fermented food.
It is also called as ethanol fermentation is processed by yeast or some other microorganisms, used to make ATP. Yeast functions in the presence of oxygen called as aerobic fermentation but it can also perform in absence of oxygen or under anaerobic conditions.
This process show has a profound importance for the manufacturing of alcoholic beverages like beer and wine.
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It is possible that a recessive trait in a survey such as this one may have a greater total number than its dominant counterpart. Explain how that might happen in an investigation like this.
Answer:
No,really. It is possible that a recessive trait in a survey such as this one may have a greater total number than its dominant counterpart...... Because all of the offspring can in herit the came recessive trait.
What is the relationship between greenhouse gases,global temperature and sea level
Answer:
As the world warms due to greenhouse gases — carbon dioxide included — waters heat up and expand, causing sea levels to rise. Removing the extra ocean heat caused by even short-lived gases, and consequently lowering sea levels, is an extremely slow process.
Explanation:
whats a term for ecology that starts with the letter Y
Answer:
yellow rain
Explanation:
source Wikipedia
Answer:
yellow rain
Explanation:Don't let anyone bring you down you got this you matter, and rock!
Which of the following statements is true about membranes?
A.
Mucus membranes line cavities that have an external opening in the body,
B.
Serous membranes line internal cavities that have no external opening in the body,
C.
When a membrane is attached to an organ it is called a visceral membrane,
D. All of the above.
The true statements are all of the above. Hence, option D is correct.
What do you mean by Mucous membrane?A Mucous membrane may be defined as the epithelial tissues that involve the inner lining of the internal organs that secrete mucus. It includes the respiratory system, gut, etc.
Mucous membranes line cavities that have an external opening in the body. Serous membranes line internal cavities that have no external opening in the body, while a visceral membrane is a type of membrane that is attached to an organ.
Therefore, the correct option for this question is D, i.e. all the above.
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The data table below shows how long it takes each inner planet to make one complete rotation and revolution. The numbers listed are in Earth days (24-hour periods).
On which planet is 1 day longer than 1 year?
Answer:
venus
Explanation:
the time taken to rotate is longer than time taken to revolve
name the device that helps you to maintain potential difference across a conductor
Answer:
battery
Explanation:
Any source of electricity, the battery, or the power supply is there to maintain the potential difference across a conductor.
To measure this difference we use VOLTMETER - Instrument for measuring potential differences, voltage differences. It is called a voltmeter as it allows the measurement of the potential difference or voltage that exists between two points belonging to an electrical circuit. The voltmeter, therefore, detects the voltage.
Can a virus reproduce outside a living thing?
no
yes
Answer:
no it cannot
Explanation:
What sedimentary rock is made of fossilized plants?
A. Limestone
B. Coal
C. Shale
D. Conglomerate
Starch contains two polymers of glucose, they are amylose and amylopectin. Amylose differs from amylopectin in that
Answer:
Amylose is a straight chain whereas amylopectin is a branched chain polymer.
Explanation:
Amylose differs from amylopectin because amylose is a straight chain while on the other hand, amylopectin is a branched chain polymer. Branched chain polymers refers to main chain with smaller chains as branches of main chain while straight chain polymer has only main chain and no branches of main chain. Starch comprise of about 10-20% amylose and 80-90% amylopectin. Starch is considered as the main storage of energy for green plants.
Glucose is what type of molecule A: Multi- complex B: Protein C: Sugar D: Lipid
Answer:
Within all lifeforms on Earth, from the tiniest bacterium to the giant sperm whale, there are four major classes of organic macromolecules that are always found and are essential to life. These are the carbohydrates, lipids (or fats), proteins, and nucleic acids. All of the major macromolecule classes are similar, in that, they are large polymers that are assembled from small repeating monomer subunits. In Chapter 6, you were introduced to the polymers of life and their building block structures, as shown below in Figure 11.1. Recall that the monomer units for building the nucleic acids, DNA and RNA, are the nucleotide bases, whereas the monomers for proteins are amino acids, for carbohydrates are sugar residues, and for lipids are fatty acids or acetyl groups.
Explanation:
Which best describes pitch?
the amount of time taken for a longitudinal wave to produce one cycle the number of cycles per second perceived by the human ear the amplitude of a wave when the natural frequency is matched the distance between two corresponding parts of a transverse wave
The answer is B. the number of cycles per second perceived by the human ear
I got this question right :)
The pitch is the number of cycles per second perceived by the human ear. The correct option is B.
What is pitch?The ability to assess sounds as "higher" and "lower" in the sense associated with musical melodies is known as pitch.
Pitch is a perceptual feature of sounds that allows their ordering on a frequency-related scale.
Pitch in physics refers to a sound wave's specific frequency, which is expressed in Hertz (Hz).
There are two ways in which these frequencies match musical notes. high tone: A high pitch is one that vibrates at a high frequency.
Pitch is a perceptual quantity that depends on the listener, but frequency is a physical quantity that indicates the number of vibrations per second. In truth, our ears perceive pitch rather than frequency.
The pitch is how many cycles per second the human ear can detect.
Thus, the correct option is B.
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Which cell would have MOST trouble maintaining homeostasis?
A. Cell A
B. Cell B
C. Cell C
The cell that would have the most trouble maintaining homeostasis is cell A. The correct option is a.
What is homeostasis?Any self-regulating process, such as homeostasis, helps an organism retain stability while responding to environmental factors that are favorable for its survival. If homeostasis is effective, life continues; if it is not, the organism perishes or suffers a catastrophe.
There are three cells in the given which are of different sizes' cell a is 1 cm cell 2 is 2 cm and cell 3 is 3 cm from each side.
Cell A would have the most towel in maintaining homeostasis, says because it is small and growing is one of the terms needed for maintaining homeostasis. If the organism is small it would have difficulty, then the organism is big it would easily maintain the homeostasis of his body.
Therefore, the correct option is a, cell A.
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The ways through which molecules can pass through phospholipid membranes is/are
Answer: there are atoms
Please answer this MCQ fast I am in trouble...... God have mercy on you and me.
Answer:
I'm thinking its either c or b.
Explanation:
I also think its B because the effector neuron transmits impulses from the central nervous system to an effector in order to bring about a physiological response. I'm not really that good at biology.
HELP ASAP, ITS TIMED
Bacteria and fungi are considered as:
Select one:
a. omnivore.
b. decomposer.
c. herbivores.
d. carnivore
Answer:
B
Explanation:
at which point in its orbit is a planet traveling fastest?
a) moving towards a star
b) moving away from a star
Answer:
Moving towards a star
Explanation: As you see Mercury has the fastest orbit then any other planet in our solar system because it is closer towards our sun.
NEED HELP ASAP: List two ways in which the atmosphere would be impacted in the absence of the biosphere. Use complete sentences.
Answer:
If there would be no biosphere on earth the atmosphere would be quite different. There would be no oxygen to support because oxygen is liberated by plants in photosynthesis so no plants means no oxygen. The earth would be a planet without life just like Venus and Mars. Therefore, no organism would be surviving in the world.
There would be no negligible green house effect and global warming since it is all created due to activities of men.The earth's atmosphere would be much cleaner and with lesser amount of CO2 and O2 but no organism would be there to use them.
Hope it help!
There would be more carbon dioxide, which would eventually burn away the ozone layer, as well as no oxygen, and all animal and plant life would perish.
What is biosphere?The biosphere is basically comprised up of the areas of the Earth where life can be found.
The biosphere encompasses all the things from the deepest tree root systems to the dark environment of ocean trenches, including lush rainforests, and high mountaintops. Earth is described by scientists in terms of spheres.
Because it is all of life, the biosphere is as important as life itself. Earth would be a lifeless planet like Mars or Venus without the biosphere. Human insecurity grows as natural resources are depleted.
The biosphere is the zone that contains all living things. The biosphere requires the lithosphere, hydrosphere, and atmosphere to exist. There would be no life on Earth if these three spheres did not exist.
Thus, this way, the atmosphere would be impacted in the absence of the biosphere.
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Given the diagram below, which of the following ordered pairs represents the
vertex, A?
O A. (b cosc, b sinC)
O B. (b cos C, c sinc)
O C. (a cosB, a sinB)
O D. (a cosc, b sinC)
Answer:c
Explanation:because cosin of b is c
(a cosc, b sinC) pairs represents the vertex A in this diagram. Hence option D is correct.
What is Vertex ?In geometry, a vertex (in plural form: vertices or vertexes) is a point where two or more curves, lines, or edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedral are vertices.
The vertex of an angle is the point where two rays begin or meet, where two line segments join or meet, where two lines intersect (cross), or any appropriate combination of rays, segments, and lines that result in two straight sides meeting at one place.
In a polygon, a vertex is called "convex" if the internal angle of the polygon is less than π radians otherwise, it is called concave.
Hence option D is correct.
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