Answer:
The coarse adjustment knob should only be used with the lowest power objective lens. Once it is in focus, you will only need to use the fine focus. Using the coarse focus with higher lenses may result in crashing the lens into the slide.
Explanation:
The packaging and distribution center of the cell is the
Group of answer choices
central vacuole.
nucleus.
nuclear envelope.
Golgi apparatus.
Answer: The Golgi Apparatus
The Golgi apparatus is a set of flattened, membrane-bound sacs that serve as the packaging and distribution center of the cell.
Explanation:
The packaging and distribution center of the cell is the function of the golgi apparatus. Golgi apparatus prepares proteins and lipids in cell. Thus, the correct option is D.
What is Golgi apparatus?Golgi body is also known as a Golgi apparatus. It is a cell organelle which helps in processing and packaging of proteins and lipid molecules, especially the proteins that are destined to be exported out from the cell.
Stack of small flat sacs formed by membranes inside the cell's cytoplasm. Golgi apparatus prepares proteins and lipids for the use inside and outside of the cell.
Therefore, the correct option is D.
Learn more about Golgi Apparatus here:
https://brainly.com/question/12233980
#SPJ2
What is the percentage size difference between the giant dragonfly and the modern dragonfly?
Answer:
Giant Dragonfly - 2.5 FEET
Modern Dragon Fly - 1-4 Inches.
Explanation:
Size Difference in Percentage: The Giant Dragonfly is 250% - 160% bigger than the Modern Dragonfly.
Explanation:
The Giant Dragonfly is 250% - 160% bigger than the Modern Dragonfly.1
Mia conducted a five hour experiment. She used a liquid solution. The solution decreased by 9/8 ounces every hour for 5 hours. At the end of the experiment, there were 99/8 ounces of the solution remaining. How many ounces of solution did Mia start with? *
Given:
The solution decreased by [tex]\dfrac{9}{8}[/tex] ounces every hour for 5 hours.
Remaining solution at the end of the experiment = [tex]\dfrac{99}{8}[/tex] ounces.
To find:
The initial amount of solution.
Solution:
Let the initial amount of the solution be x.
The solution decreased by [tex]\dfrac{9}{8}[/tex] ounces every hour for 5 hours.
Total decreased amount [tex]=\dfrac{9}{8}\times 5[/tex]
[tex]=\dfrac{45}{8}[/tex]
Initial amount = Remining amount + Decreased amount of solution.
[tex]x=\dfrac{99}{8}+\dfrac{45}{8}[/tex]
[tex]x=\dfrac{99+45}{8}[/tex]
[tex]x=\dfrac{144}{8}[/tex]
[tex]x=18[/tex]
Therefore, the initial amount of solution is 18 ounces.
Please answer quickly!!!!!
Which property of argon makes it useful for potassium-argon dating?
It decays into potassium.
It is an unstable element.
It remains trapped in rock.
It is useful only for dating newer rock.
Answer:
The correct answer is c, plz give me brainlest
Explanation:
got 100 percent on the quiz
A property of argon that makes it useful for potassium-argon dating is that it decays into potassium. Thus, the correct option for this question is A.
What is Radioactive dating?Radioactive dating may be defined as a type of methodology for dating rocks and minerals with the help of radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks.
Potassium-argon dating is a method of determining the time of origin of rocks by estimating the ratio of radioactive argon in order to radioactive potassium in the rock. This dating method is typically based on the decay of radioactive potassium-40 to radioactive argon-40 in minerals and rocks.
Therefore, a property of argon that makes it useful for potassium-argon dating is that it decays into potassium. Thus, the correct option for this question is A.
To learn more about Potassium dating, refer to the link:
https://brainly.com/question/12081580
#SPJ6
Explain what white light is and what it's made of, what do we see it as
PLZ HURRY
Answer:
The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 1025 hertz, corresponding to wavelengths from thousands of kilometers down to a fraction of the size of an atomic nucleus. This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are called by different names; beginning at the low frequency (long wavelength) end of the spectrum these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays at the high-frequency (short wavelength) end. The electromagnetic waves in each of these bands have different characteristics, such as how they are produced, how they interact with matter, and their practical applications. The limit for long wavelengths is the size of the universe itself, while it is thought that the short wavelength limit is in the vicinity of the Planck length.[4] Gamma rays, X-rays, and high ultraviolet are classified as ionizing radiation as their photons have enough energy to ionize atoms, causing chemical reactions.
Explanation:
Answer:Each color has a different wavelength. Red has the longest wavelength, and violet has the shortest wavelength. When all the waves are seen together, they make white light. White light is actually made of all of the colors of the rainbow because it contains all wavelengths, and it is described as poly chromatic light.
Explanation:
Hope this helps :)
2
Drag each tile to the correct box.
Here is a list of foreign empires that ruled Egypt. Arrange them chronologically, starting from the ones who ruled first.
Persians
Romans
Greeks/Macedonians
Hyksos
Assyrians
Answer:
for the past two years there have to have to have a lot of a new look and 8g in a
Explanation:
the diameter is the best of all the correc to a good level but the best way of doing is the way the correc and
Answer:
This is the answer <3. I hope it helps! the other guy wont help but I am always ready to help the Brainly community
Hyksos➡️Nubians➡️Assyrians➡️Persians➡️Macedonians➡️Romans
Explanation:
A cell of an organism has four chromosomes.It undergoes a process at the end of which two daughter cells are produced. Each daughter cell has four chromosomes. Which process is described?
a.fertilization
b.meiosis
c.mitosis
the diagram shown represents a dihybrid cross between two pea plants heterozygous for both seed color and seed shape.
what is the phenotypic ratio of the offspring?
A. 1:1:1:2:2:2:2:4
B. 1:3:3:9
C. 1:4
D. 4:12
Answer:
1:3:3:9
Explanation:
There are 12 yellow seeds, from which 9 are smooth and 3 are rough.
There are 4 green seeds, from which 3 are smooth and only 1 is rough.
Both the appearance and color of the seeds is something you need to look out for when dealing with phenotypes.
The phenotypic ratio of this dihybrid cross will be 1:3:3:9.
What is phenotype?The term phenotype simply refers to a trait that may be observed. Pheno means observe and is derived from the same root as "phenomenon." As a result, it's a sort of organism that can be seen, and it may relate to anything from a common characteristic like height or hair color to the presence or absence of disease.What is dihybrid cross?A mating experiment between two animals that are identically hybrid for two features is referred to as a dihybrid cross. A heterozygous organism is one that possesses two distinct alleles at the same genetic location, or locus.The cross between a homozygous pea plant with round yellow seeds and wrinkled green seeds is an example of a dihybrid cross.RRYY alleles are found in round yellow seeds, while rryy alleles are found in wrinkled green seeds.Hence the correct option is B.
To know more about Dihybrid cross here
https://brainly.com/question/1755932
#SPJ2
what is the point on an object where the force of gravity is considered to act A. center of mass B. top of an object C. middle of the object D. center of gravity
Answer:
D. Center of gravity.
Explanation:
Gravity always acts downward on every object on earth. Gravity multiplied by the object's mass produces a force called weight. Although the force of an object's weight acts downward on every particle of the object, it is usually considered to act as a single force through its balance point, or center of gravity.
Answer:
D. center of gravity
Explanation:
Which of the following is true about ecology? (1 point)
Ecology is a philosophy that seeks to limit harm to the natural world.
Ecology is a practice that emphasizes preservation of life.
Ecology is an area of study that focuses on interactions in nature.
Ecology is a strategy for sustainable living.
Answer:
c
Explanation:
Ecology is an area of study that focuses on interactions in nature.
Answer:
The answer is choice C
Explanation:
All the ohther answers are techniqually not "studying"
If a rock falls and kills 10 individuals from a population of 100 plants of the same species and the frequency of alleles changes, does the population evolve instantly from that stochastic event? Can it be said that Natural Selection is at work in this case? And how does the Synthetic Theory of Evolution help answer this question?
Answer:
Explanation:
This question seeks to test the knowledge of the modern synthetic theory of evolution. This theory describes evolution as the changes occurring in the allele frequency within a population of the same specie. Hence, the following questions derived from the question can be answered as thus
1) Does the population evolve instantly from that stochastic event?
YES. This is because the frequency of the allele changed.
2) Can it be said that Natural Selection is at work in this case?
YES. The synthetic theory of evolution derives great "evidence" from natural selection because the allele frequency is believed to have changed because of the environmental impact (the rock) and that the next generation will adapt better to such an environment.
3) How does the Synthetic Theory of Evolution help answer this question?
Previously, evolution was believed to occur over several generation which ultimately lead to some phenotypic changes as a result of adaptive changes in the genes. This old description of evolution would have made one arrive at a wrong answer if one does not consider the modern synthetic theory of evolution which talks about instant evolution from allele frequency (as was described in the question).
Write the overall equation for photosynthesis using words?
Answer:
carbon dioxide + water =glucose +oxygen
Explanation:
hope this helps :)
The overall equation for photosynthesis using words is:
Carbon dioxide + water + sunlight energy → glucose + oxygen
Photosynthesis in plant chloroplasts and photosynthetic microorganisms is a complex metabolic process. Photosynthesis equation: [tex]CO_2 + H_2O + sunlight = glucose (C_6H_{12}O_6) + O_2.[/tex]
Photosynthesis converts carbon dioxide and water into glucose and oxygen. Special pigments like chlorophyll collect sunlight and transform it into chemical energy.
Photosynthesis underpins the food chain and sustains life on Earth. Primary producers, plants synthesise glucose that sustains all other organisms' growth and development. Photosynthesis provides oxygen for respiration and regulates carbon dioxide levels, preserving Earth's atmosphere.
Learn more about photosynthesis, here:
https://brainly.com/question/34094783
#SPJ6
Leukemia is a malignant progressive disease in which the bone marrow and other blood-
forming organs produce increased numbers of immature or abnormal white blood cells.
Which statement about cell cycle checkpoints describes how this disease occurs?
A Dysfunctional checkpoints may lead to abnormal cell growth.
B Defective checkpoints result in death of a cell.
C Normal checkpoints assess damage to cancer cells.
D Cell checkpoints fail only in meiosis.
What would this be.
Answer:
A Dysfunctional checkpoints may lead to abnormal cell growth.
Explanation:
One of the hallmarks of cancer is unregulated cell proliferation. This means cells keep dividing, producing large numbers of often abnormal cells.
There are many of ways this can happen, such as increased signals telling the cells to divide, and dysfunctional cell cycle checkpoints that do not stop the cell from dividing. This leads to the accumulation of mutations and abnormal cell growth.
Show work
13.5mm = ?m
How does mutation increase chances for survival? Please help me.
Answer:
These mutations can increase an organism's chance for survival and usually occur over a course of many generations producing offspring (or babies) with the helpful mutation. ... This would allow you to mate and produce offspring because you would have survived for longer lifespans.
Explanation:
how can vaccinating individual people will help protect a whole population from malaria
Answer:
This is where Herd Immunity comes into play. Herd Immunity occurs when enough people become immune to a disease that it is unlikely to spread, even to those not vaccinated. Though you should get vaccinated if you can just to be safe.
Explanation:
Why do you think eclipses still capture human imagination and interest, even though we can now predict t understand them better?
Answer:
Eclipse is defined as an event in which one celestial body crosses another celestial body. for example Lunar eclipse, when the moon moves into the shadow of the earth.
Scientists has invented a lot about eclipses and now it is able to predict eclipses but human is a curious animal, different people have different views and beliefs, so people with religious beliefs have different imagination about eclipse. In the solar system everything changes with time, so we can't say that the prediction about eclipse will be true always.
in which direction is heat being transferred?
Answer:
And unless people interfere, thermal energy — or heat — naturally flows in one direction only: from hot toward cold. Heat moves naturally by any of three means. The processes are known as conduction, convection and radiation. Sometimes more than one may occur at the same time.
Explanation:
Producers transform light energy into chemical energy. True or false
False.................
HELP PLZZ
Lipids have several functions, which include
A.protection from water loss
B.control chemical reactions
C.help fight disease
D.insulation
Answer:
D . Insulation
Explanation:
Giraffes are herbivores that initially had shorter necks. They are found in grasslands and areas where trees grow tall. To feed on leaves from tall trees, giraffes had to stretch their necks. This behavior paved the way for
of giraffes with longer necks. A giraffe’s long neck is a
adaptation.
This behavior paved the way for natural selection of giraffes with longer necks. A giraffe’s long neck is a structural adaptation.
WILL GIVE BRAINLIEST!!!!!!!!
After a forest fire what would be the first change in a forest?
Pioneer species are established
A climax community is established
Wind carries seeds to the area and plants grow from these seeds
New soil forms from rock
Answer:
The answer is C: Wind Carries seeds to the area and plants grow from these seeds.
Explanation:
Which molecule is most common in the human body?
O A. H2
B. N2
C. H20
D. CO2
PLZ HELP!! ASAP!!
Carbohydrates have chemical bonds that are a good source of energy for living things. A monosaccharide is a carbohydrate made by plants when energy from the sun combines water and carbon dioxide.
How are the two other types of carbohydrates formed? Give examples of each type.
Explanation:
The other two types of carbohydrates, disaccharides and polysaccharides, are formed when monosaccharides link together to form larger molecules and chains. A disaccharide is a sugar that is made from two monosaccharides (di=two). For example, sucrose is a disaccharide that is made from the bonding of glucose with fructose, which are both monosaccharides. Sucrose is known as table sugar, and is found naturally in plants. Polysaccharides are large, complex molecules that are formed when monosaccharides or disaccharides link together in repeating units to form long chains. The most abundant polysaccharide in the world is cellulose, the substance that makes up the cell wall of plant cells. Starches are also examples of polysaccharides, and these are stored in plants such as grains, corn and wheat.
All living organisms must obtain energy in order to survive, and most organisms rely on carbohydrates as energy sources. These molecules are made through the process of photosynthesis, and they store the sun's energy within them.
A mother and daughter are both talented pianist. Give an inherited trait and learned trait would lead to this similarity
Answer:
long fingers or slim hands i think would make sense for inherited trait and learned trait would be the mother teaching the daughter how to play piano
Which of the following food chain correctly represents the flow of energy in a living system? NEED ASAP
Answer:
B-> Starts with Producer
Explanation:
It's in the name. You will just have to memorize the vocabulary.
Option (B) correctly represents the flow of energy in a living system because food chain starts with a producer.
What is a food chain?Wild food chain shows who eats whom. Every living thing—from algae to blue whales—needs food. Each food chain is an energy and nutrient channel in the ecosystem.
In food chains, organisms are categorised into trophic levels. Producers (first trophic level), consumers (second, third, and fourth trophic levels), and decomposers roughly correspond to these levels.
Autotrophs produce their own nourishment. They start every food chain. Plants and single-celled creatures are autotrophs. Nearly all autotrophs make "food" (glucose) from sunlight, carbon dioxide, and water through photosynthesis.
Learn more about food chain, here:
https://brainly.com/question/29303356
#SPJ2
All organisms utilize adenosine triphosphate (ATP) as their major source of energy. The molecules
of ATP and ADP (adenosine diphosphate) + P: (inorganic phosphate) form a cycle to allow for a
constant source of energy-rich ATP molecules.
Which of the following MOST accurately describes the role of ATP as a source of energy?
O ATP absorbs energy as it is converted into ADP + Pi.
ADP + P; release energy as they are converted into ATP.
O When ATP is converted into ADP + Pi , energy is released and used by the cell.
O When ADP + Pi are converted into ATP, energy is released and used by the cell.
Answer:
When ATP is converted into ADP + P energy is released and used by the cell.
Explanation: ATP contains energy, when a certain part breaks off it converts into ADP and releases energy for the cell tp use.
When ATP is converted into ADP + Pi , energy is released and used by the cell is the most accurately describes the role of ATP as a source of energy.
What is ATP?An organic substance called adenosine triphosphate (ATP) gives energy to a variety of biological functions in living cells, including muscular contraction, nerve impulse transmission, condensate dissolving, and chemical synthesis.
ATP is frequently referred to as the "molecular unit of currency" of intracellular energy transfer and is present in all known forms of life. It either transforms into adenosine monophosphate (AMP) or adenosine diphosphate (ADP) when absorbed in metabolic activities (AMP).
ATP is replenished by other processes. Every day, the human body recycles the equivalent amount of ATP to its own body weight. Additionally, it serves as a coenzyme and a precursor to DNA and RNA.
Therefore, When ATP is converted into ADP + Pi , energy is released and used by the cell is the most accurately describes the role of ATP as a source of energy.
To learn more about ATP, refer to the link:
https://brainly.com/question/14637256
#SPJ2
Definition of toxins
Answer:
A poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable.
Explanation:
(will give brainliest if correct)
Which resource is sometimes unpredictable in terms of energy production?
coal
wood
gasoline
natural gas
Answer:
Coal and/or wood
On May 18, 1980, Mount St. Helens in Washington State experienced a huge volcanic eruption after a magnitude 5.1 earthquake. During the eruption, hot ash and pumice poured down the west, south, and east sides of the mountain, melting the snow and ice at the top of the volcano and producing volcanic mudflows. Which type of process first occurred in the ecosystem around Mount St. Helens after it erupted?
Answer:
primary succession
Explanation:
Primary succession starts in regions where there is no soil or where the soil is incapable of sustaining life due to any recent lava flows or newly formed sand dunes. Primary succession may lead to the formation of islands on land formed from glacial retreats or on new volcanic rock.
Primary succession occurred in the ecosystem around Mount St. Helens after the volcano erupted.
Answer:
Primary Succesian
Explanation:
Over a thousand feet of the top of the mountain was obliterated, causing darkness during the day for towns up to 85 miles away, mudslides and large ask deposits, loss of life to humans and anima