Answer:
The dependent (or responding) variable is the one that is observed and likely changes in response to the independent variable.
Explanation:
If 2 atoms of gold have the same properties, does an electron have the same properties of gold
Place mercury in the reactor. After a large amount of work, only a tiny portion of gold is created.
Decontaminate the resulting gold. This is harder than it sounds because you can't separate out non-radioactive gold from radioactive gold using purely chemical methods.
It should be obvious from this process that it currently costs much more money to create non-radioactive gold than you could ever earn by selling the gold. Creating gold from other elements is currently an expensive laboratory experiment and not a viable commercial activity. Perhaps technology will improve enough in the future to make creation of gold in nuclear reactors a profitable economic enterprise.
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Question 2 (20 points)
A scientist is examining slides of cells from organisms in different groups. What two
features would the scientist use to distinguish a plant cell from an animal cell?
A•presence or absence of mitochondria
B•presence or absence of a cell wall and chloroplasts
C•presence or absence of a nucleus and cell membrane
D•presence or absence of a cell membrane and cytoplasm
The two features would the scientist use to distinguish a plant cell from an animal cell are the presence or absence of a cell wall and chloroplasts. Thus option B is correct.
what is function of chloroplast ?Chloroplasts are the membrane bound organelle present only in photosynthetic organism like plants and algae; They are located in mesophyll cells of leaves and have a high concentration of chlorophyll pigment which absorb sunlight and absent in animal cell.
Chloroplast has extra-nuclear DNA, these are semiautonomous in nature; They synthesize food that is glucose by the process of photosynthesis by absorbing sunlight into chemical energy.
It is major house which involve in the production of NADPH and molecular oxygen (O2) released by the photolysis of water; It also produces ATP from photosynthesis.
It also indirectly participate in generation of carbon and sugar molecule during the Calvin Cycle or dark reaction of photosynthesis.
Thus option B is correct.
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What do all living organisms have in common?
Answer:
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing.
Explanation:
during which phase of of mitisis do the do chromosomes line up along the middle of dividing cell
a.prophase
b. telophase
c.metaphase
d.anaphase
which statement about water best illustrates the property of adehsion
Which of the following is found in BOTH plant and animal cells?
Choose 1 answer:
(Choice A) Lysosome
(Choice B) Chloroplast
(Choice C) Cell wall
(Choice D) Nucleus
Answer: The answer is D Nucleus
Explanation:
OPTION D) NUCLEUS.....
Explanation:
NUCLEUS IS FOUND IN BOTH PLANTS AND ANIMALS CELLS......
In my BIO lesson it's comes. I'm sure. NUCLEUS is the right answer.....
HOPE IT HELP........
Which process maintains a stable internal environment?
A) metabolism
B) reproduction
C) homeostasis
D) respond to stimuli
Answer:
C
Explanation:
Took the quiz
Which regions on Earth show the greatest number of species in decline?
Oceania, South America, and Southeast Asia.
It currently accounts for the majority of recent extinctions. More species than we can count have perished as a result of deforestation. Our forests support entire ecosystems. If we do not stop deforestation, it is anticipated that all of our rainforest will vanish over the next 100 years.
What regions on Earth show a number of species in decline?With 3,330 species at risk across 10 countries, Asia has the highest concentration of endangered species of any continent. Sadly, the United States, which ranks sixth, is also in the top 10.
The majority of the endangered species are found on the continent of Asia. More than 2,100 native Asian species have been classified as “endangered.”
Therefore, Oceania, South America, and Southeast Asia regions on Earth show the greatest number of species in decline.
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suggest why a 16 years old boy or girl needs more energy than a baby
Answer and Explanation:
A 16-year-old usually needs about 2,500-3,200 calories for energy. A baby's calorie diet is around 35-50 per pound. The reasoning is that a baby does not move around as much as a teenager would. A baby cannot walk or run. A teenager however moves a lot whether to get up to go eat or to a different room.
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How does Rutherford’s model of the atom compare with Thomson’s model? They both describe atoms as small, indivisible spheres. They both describe electrons as moving around the nucleus. They both describe electrons as being surrounded by the positive matter. They both describe atoms as being made up of positive and negative matter.
Answer:
They both describe atoms as being made up of positive and negative matter.
Explanation:
Both Rutherford and Thomson's model both describe atoms as being made up of positive and negative matter. The correct option is D.
What is an atom?An atom is a matter particle that truly represents a chemical element. An atom is made up of a central nucleus encased by one or more electrons. Each electron carries a negative charge.
Thomson's plum pudding the atom model contained negatively charged electrons within a positively charged "soup."
The gold foil experiment by Rutherford demonstrated that the atom is mostly empty space with a tiny, dense, positively charged nucleus. Rutherford proposed the nuclear model of the atom based on these findings.
Thus, the correct option is D.
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Can carbon move from a living component of an ecosystem to a nonliving component
Answer:
yes
Explanation:
because carbon can travel anywhere
what is a genotype for RR rr
Some silverware is made with the element silver (Ag). Over time, this silverware will turn black (tarnish) if it is not cleaned with a special solution. Why is this a chemical change?
Answer:
The tarnish is actually the result of a chemical reaction between the silver and sulfur-containing substances in the air. The silver is actually combining with sulfur and forming silver sulfide. Silver sulfide is black. When a thin coating of silver sulfide forms on the surface of silver, it darkens the silver. That’s what we call ‘tarnish.’
Which biomolecule determines a person's ability to clot blood properly?
A- Glycogen
B- Lipids
C-Carbohydrates
D- Nucleic Acids
Answer:
D- Nucleic Acids
Explanation:
Blood clotting is a process whereby a person's blood coagulates due to the formation of a white fibrous protein substance called FIBRIN. The essence of blood clotting is to prevent excessive flow/waste of blood when a blood vessel is wounded.
However, certain substances are needed for this process of blood clotting to occur in our body. Some individuals lack this substances and hence bleed continuously during injury, a condition known as HEMORRHAGE. The substances such as FIBRIN, a protein needed for blood clotting is encoded by GENES which makes up DNA (a type of nucleic acid).
Therefore, NUCLEIC ACID biomolecules determines a person's ability to clot blood properly because nucleic acids make up DNA, which contains segments (genes) that encode the synthesis of proteins (fibrin) needed for blood clotting to occur. Hence, it all boils down to NUCLEIC ACIDS.
What is, neglecting your health by eating poorly is considered? A a controllable risk factor B an uncontrollable risk factor C a long-term benefit of fitness D a temporary setback
Answer:
A
Explanation:
In the night sky, stars often look like a multitude of bright lights barely distinguishable from one another. But the fact is that stars vary greatly. The differences are difficult to see from far away. Can you guess the ways in which stars differ from one another? And what do they have in common?
Answer:
The correct answer is -
differences: color, brightness, temperature, size, and mass
similarities: They are balls of gas, mostly hydrogen and helium
Explanation:
Stars look mostly the same from anywhere or any place and tough to differentiate or distinguish one from another. Star can be different on the various ground even they look similar from far away.
Stars can be of various colors from red to blue and brightness can be different as well, color depends on temperature, and brightness depends on the size of the star.
Stars are grouped by the size that ranges from dwarf to supergiant. The temperature of the stars also varies which affects the color and brightness as well.
Stars are the big balls of gases composed of mainly helium and hydrogen all are always under a nuclear reaction.
Answer:
Stars have different masses and sizes. They are composed of different mixtures of elements. All stars, however, are powered by nuclear fusion and have a limited life-span.
Explanation:
Write a paragraph about trains that were made in 1800's.
Answer:
This significant aspect of the design was transferred to later locomotives. Railways were made out of cast-iron until the 1800s. Cast iron was sadly susceptible to corrosion and it was weak, often causing it to collapse under stress. John Birkinshaw invented a more robust material, wrought iron, in 1820.
Explanation:
What is biology? What dose it mean to the world
Answer:
The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms.
Explanation:
what are the disadvantages of adding calcium oxide to fish pond
Answer:
it causes the rapid increase in PH which may harmful for the for fishes and other aquatic lives.
Explanation:
There are a lot of materials which are used to neutralize the acidity of soil.some examples of such materials are slacked lime, quick lime, and liquid lime etc. Lime increases the PH and the concentration of calcium which helps in removal of phosphate from water. Raising PH also cause to remove the carbon dioxide from the water. But keep in mind that rapid increase in PH is harmful for the fishes.calcium oxide also causes the rapid increase in Ph therefore, it is not advisable to use in fishpond.
NEED HELP ASAP! The Process of mitosis and cytokinesis are used by humans in which of the following?
I. asexual reproduction
II. growth
III. repair
IV. replacement
a. I only
b. II only
c. II, III, and IV only
d. I, II, III and IV
The process of mitosis and cytokinesis are used by humans in the following:
I. asexual reproduction
II. growth
III. repair
IV. replacement
MITOSIS:
Mitosis is the process by which a single cell produces two daughter cells that are genetically identical to one another. Mitosis is employed by cells for growth and repair. It is the process by which cells are multiplied in the body of an organism. However, mitosis is not involved in the production of gametes or sexual reproduction. Therefore, process of mitosis and cytokinesis are used by humans in the following:I. asexual reproductionII. growthIII. repairIV. replacementLearn more at: https://brainly.com/question/12327654?referrer=searchResults
Answer: D. I, II, III, and IV
Explanation:
A hypothesis is
A.
a summary of events written in a particular fashion.
B.
a statement that proposes a possible explanation to some phenomenon or event.
C.
the process of experimentation designed specifically to disprove a scientific theory.
D.
the result of a scientific experiment performed for the purpose of proving a theory.
Answer:
B
Explanation:
Define/Explain what is a System and What are the Interacting Components of a system?
Answer: A system is a group of interacting or interrelated entities that form a unified whole. ... A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory.
Explanation:
what is the closest star to us besides the sun?
Identify two organs or body features that are lateral to the navel
Answer:kidneys
Explanation:
Kidney a pair of organs that are lateral to the navel.
what are the function of kidney ?Kidney maintain acid-base balance of the human body is a state of delicate equilibrium by a parameter called as pH and the normal pH of the blood is 7.35 to 7.45.
The kidneys control the stable water balance in human body, filter some electrolytes from the blood, return part of them back into circulation, and excrete excess electrolytes into the urine, sodium and phosphate are dependent on the health of one’s kidneys.
The kidneys remove water-soluble waste products and toxins with urine, it produce an enzyme called renin which converts the angiotensinogen produced into angiotensin I and converted in the lungs into angiotensin II. Angiotensin II constricts the blood vessels and control blood pressure.
The kidneys produce erythropoietin, which help the body to create erythrocytes essential for the transport of oxygen throughout all the body parts.
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BRAINLIEST what bird can fly backwards
Answer:
A humming bird is the only bird that can fly backwards
Explanation:
Describe The Phenomenon
Answer:
Phenomenon is a fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question.
It is observable fact or event
Which number belongs in the space labeled X?
A) 5
B) 7
C) 8
D) 10
Which reason best explains why living things need carbon
Answer:
Its ability to form polymers makes it an ideal partner for molecules that generate life. Carbon is a key chemical element for life and the natural processes that take place on earth.
The range is always associated with which values? *
The rage is always asóciate whit
Answer:
the range of the function is the set of all values f take
Explanation:
Which are characteristics of a prokaryotic cell?
Are there answer choices that I can choose from?
Answer:
A.C.F :)
Explanation:
contains dna, contains ribosomes, and lacks a nucleus
