Answer:
Molecules always move from inside of the cell to outside if the cell
Answer:
Molecules always move from areas of high concentration to low concentration.
Explanation:
Some cells contain large numbers of mitochondria while others have relatively few or none. This suggests that Some cells contain large numbers of mitochondria while others have relatively few or none. This suggests that:_________.
a) cells with large numbers of mitochondria are short-lived.
b) some cells are older than others.
c) cells with large numbers of mitochondria have a high energy demand.
d) cells with large numbers of mitochondria have a low energy demand.
e) cells with small numbers of mitochondria have a large ATP supply.
Cells with large numbers of mitochondria have a high energy demand.
Cells that have a high mitochondria content, such as skeletal muscle cells, have a high energy demand.Respiration takes place in the mitochondria of cells in order to provide the cell with energy.What is mitochondria?Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP)To know more about mitochondria here
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A chemical reaction is a process by which atoms or groups of atoms in substances
are
(A) dissolved in other substances.
(B) ionized by the loss of protons.
mixed together with atoms in other substances.
(D) reorganized into different substances.
Answer:
A). dissolved into other substances
Explanation:
Process of elimination-
B) loss of protons-mechanical reaction
D) reorganized into different substances-physical reaction
A chemical reaction is a process by which atoms or groups of atoms in substances are reorganized into different substances. The correct option is D.
What is a chemical reaction?A series of chemical reactions that directly convert one or more substances, known as reactants, into one or more different compounds, known as products.
Chemical elements or compounds are examples of substances. A chemical reaction rearranges the constituent atoms of the reactants to produce various products.
Combination, decomposition, single-replacement, double-replacement, and combustion are the five basic types of chemical reactions.
Analyzing the reactants and products of a specific reaction will allow you to categorize it.
A chemical reaction is the chemical transformation of one set of chemical substances into another. A chemical reaction is the process by which atoms or groups of atoms in one substance are rearranged into another.
Thus, the correct option is D.
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what is species diversity
Answer:
Species diversity is defined as the number of species and abundance of each species that live in a particular location.
Explanation:
Two students are testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the following is a controlled variable?
amount of fertilizer
growth of the strawberries
number of leaves
type of soil
A controlled variable is a variable that is kept constant or unchanged throughout an experiment. In this case, the controlled variable is: Type of soil, option (D).
What is a controlled variable?A controlled variable is a variable that is kept constant or unchanged throughout an experiment. It is also called a constant or standard variable. The purpose of a controlled variable is to eliminate the possibility that changes in the experimental results are due to changes in any other variable except the one being tested.
In an experiment, there are usually one or more independent variables, which are manipulated or changed to observe their effect on the dependent variable, which is the variable being measured. The controlled variable is kept the same to prevent it from influencing the experimental outcome. By keeping the controlled variable constant, the experimenter can be confident that any observed changes in the dependent variable are due to changes in the independent variable, not the controlled variable.
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What would be the most likely effect of a large area of forest being cleared by logging?
An increase in animal respiration rate would cause an increase in carbon dioxide in the area.
Less carbon dioxide would be removed from the atmosphere in that area by producers
The availability of habitats for small rodents and birds in the area would increase.
More energy would be available for the primary consumers in the area.
Can someone please answer this
Less carbon dioxide would be removed from the atmosphere in that area by producers would be the most likely effect of a large area of forest being cleared by logging. Hence, option B is correct.
What are deforestation and its effects?The deliberate clearance of forested terrain is known as deforestation. Forests have been cleared throughout history and into the present era to make room for agriculture and animal grazing as well as to obtain wood for fuel, manufacture, and construction.
Across the world, deforestation has significantly changed the terrain.
Thus, less carbon dioxide would be removed from the atmosphere in that area by producers would be the most likely effect of a large area of forest being cleared by logging. Hence, option B is correct.
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Where is a meteorite found?
1) in space
2) in earth’s atmosphere
3) hitting the sun
Answer:
In space
Explanation:
Because it would be weird if it would be in earth's atmosphere, and hitting the sun is rare. Most likely to come from space
Answer:
In Space.
Explanation:
All meteorites come from inside the solar system. Most break off from an asteroid in the asteroid belt and circle the sun. But they come from Space.
How did the evolution of coral reefs affect the evolution of new life-forms?
Answer:
The trio determined the environment where 6615 genera of marine species originated,based on where the fossil first appeared
They determined the environment where 6615 genera of marine species originated, based on where the fossil first appeared.
How did the evolution of corals create reefs?Proof indicates that they began as simple, solo organisms but, in opposite to alter in their backdrop, later evolved into the coral reefs we know today.
It is also learned that over the 500 million years, during which corals are known to have lived, they have shared a number of end events.
Thus, It is also learned that over the 500 million years, during which corals are known to have lived.
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Which image shows a metal?
Answer:
i believe it is the middle one. "Gold" is a part of the metal group 11
Answer:
2nd one gold is the metal
Help right answer please ??A fertilized egg receives 50% of its chromosomes from a sperm and 50% from the egg. Which process ensures that the sperm and egg contain only 50% of the chromosomes of an organism?
fertilization
meiosis
mitosis
mutation
The process that ensures that sperm and egg contain only 50% of the chromosomes of an organism is meiosis. The correct option is B.
What is meiosis?Meiosis is a type of cell division that occurs in reproducing organisms and results in a reduction in the number of chromosomes in gametes. Human body cells are diploid, with two sets of chromosomes (one from each parent).
Meiosis is a type of cell division that produces four gamete cells while reducing the number of chromosomes in the parent cell by half.
This process is necessary for the production of egg and sperm cells for reproduction.
A cell with a single set of chromosomes is referred to as haploid. The term haploid can also refer to the number of chromosomes in gametes, which are egg or sperm cells.
Meiosis occurs in primordial germ cells, which are distinct from the body's normal somatic cells and are designated for reproduction.
Thus, the correct option is B.
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Which foods would have the following nutrient test results? (results shown below)
a. beef, peanut butter, tuna
b. apple juice, honey, orange juice
c. candy, table sugar, cola
d. pasta, bread, crackers
Answer:
The correct answer is - option c.
Explanation:
Benedict test is used to test the presence of reducing sugar in a sample. If the benedict solution turns in red or orange color it means there is a presence of glucose as it is a reducing sugar. So, this test result shows that there no reducing sugar in the sample as it is blue.
Lugol test is the test to see if the sample has starch in it or no by turning in to blue color, in this result, it is orange in color which suggests that there is no starch available.
A Biuret solution is used to test for the availability of protein in a particular sample, purple or pink color is the representation of the presence of protein. There is no protein as per result
Sudan red test is used to test the presence of TGA, lipids, or lipoproteins in a sample by reacting with it and turn in to red color. The absence of the lipids shows no change as it is shown in this test.
Thus, the correct answer among these options is - option C.
What is true about the structure or function of the plasma membrane?
Hydrophobic molecules keep the cell from getting too much water.
The bilayer structure forms a solid boundary that separates the cell from its environment.
Large molecules often cross the plasma membrane while inside vesicles.
It is made entirely of integral proteins.
Answer:
its b
Explanation:
took the quiz lol!!!!!!!!!!!!!!!!!!!!!
Mitochondria and Chloroplast have their own DNA.
True
False
Answer:
true
Explanation:
is there a type of carbohydrate that cannot undergo cellular respiration
Answer:
i personaly dont know but carbohydrates are molecouls with sugar and if im right theres only one type of carbohydrate the other ones are lipids proteins and nuclier acids only this that cant undergo cellular respiration is lipids becouse lipids are a molecoule of fat
Explanation:
but im not sure this is just my theory
Science extends our understanding of creation. TRUE or FALSE
Answer:
true
Explanation:
Which role of bacteria is the most beneficial in terms of maintaining the health of the plant populations in our ecosystems?
Bacteria aiding in digestion in the intestines of animals.
Bacteria serving as a major food source for secondary consumers.
Bacteria decomposing dead materials which returns nutrients to the soil.
Bacteria producing oxygen for the oxygenation of the earth's atmosphere.
Answer:
Yes
Explanation:
What different type of macromolecules are present in the diets of carnivores and herbivores ?
Answer:
plants and meat or both
Explanation:
carnivores eat meat or sum.both herbivores (herb)eat only plants
The four types of macromolecules present in the diets of carnivores and herbivores are carbohydrates, lipids, proteins and nucleic acids.
Carbohydrates are molecules composed of subunits called monosaccharides (eg., glucose) linked by glycosidic bonds.Proteins are macromolecules composed of subunits called amino acids, which are linked together by peptide bonds.Lipids are a broad category of biomolecules composed of a glycerol backbone and fatty acid chains.Nucleic acids (either DNA or RNA) are biomolecules composed of nucleotides, which are consecutively linked by phosphodiester bonds.In conclusion, the four types of macromolecules present in the diets of carnivores and herbivores are carbohydrates, lipids, proteins and nucleic acids.
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Some ________ rocks are made of sand, pebbles and other sediment. *
chemical
clastic
organic
None of the choices.
Answer:
Either Organic or Non of the choices.
Explanation:
How will the change in pH impact the functioning of cells? (Hint: Explain which biomolecules and what types of bonds in these biomolecules can be affected by pH)
Which sentence has more than one independent clauses?
A.
He is the boy who helped me in my assignment.
B.
I will go there after you come home.
C.
She asked me to go out, so I did.
D.
Because he was ill, he stayed home from school.
E.
After they finished eating, I did the dishes.
Answer:
d is the answer I think.........
glycogen is a ?
Monosaccharide
Disaccharide
Polysaccharide
Answer:
Polysaccharide
Explanation:
Glycogen is a polysaccharide
Photosynthetic bacteria can make their own energy.
True
O False
false
............
.
......
Answer:
False
Explanation:
Photosynthetic bacteria cannot make their own energy, this is impossible. According to the law of conservation of energy, energy cannot be created or destroyed, so "making" energy is impossible.
Photosynthetic bacteria can, however, make their own food using the Sun's energy. So they're not creating their own energy- they are simply converting it to a more usable form.
If a DNA molecule is 22% adenine in any organism, which percentage of thymine will that DNA molecule contain?
Answer:
22% thymine
Explanation:
adenine is paired with thymine meaning there will be equal amounts.
need the definition of Epiconl
Which of the following would test positive in the Biuret test (for proteins), and negative in the Sudan Red test (for lipids/fats)?
a. skim milk
b. wheat bread
c. meatloaf
d. vegetable oil
What actions could your school take to help combat the evolution of "superbugs"?
Explain the stages in embryonic development
Answer:
Stage Days (approx) Events
1 1 (week 1) fertilized oocyte, zygote, pronuclei
2 2 - 3 morula cell division with reduction in cytoplasmic volume, blastocyst formation of inner and outer cell mass
3 4 - 5 loss of zona pellucida, free blastocyst
4 5 - 6 attaching blastocyst
Explanation:
I hope this helps!
Which material would result in the least amount of energy transfer?
A reflector that is bright in color and smooth.
A reflector that is dark in color and smooth.
An absorber that is bright in color and rough.
An absorber that is dark in color and rough.
The least amount of energy transfers by a reflector that is dark in color and rough is the correct option D.
A common example of energy transfer that we see in lifestyle is the transfer of kinetic energy—energy-related to motion—from one moving object to a stationary object via work.
Thermal energy transfers occur in three ways: ConductionConvectionRadiationEnergy can't be created or destroyed, meaning that the entire amount of energy within the universe has always been and can always be constant.
Energy is transferred by one among the subsequent four sorts of energy pathways:
Mechanical work – a force moving an object through a distanceTherefore, the correct option is D means a reflector that is dark in color and rough results in the least amount of energy transfer.
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Answer:
I think the answer is A!
Have a good day!
What is a cells shape directly related to
Answer:
a cell's shape is generally related to its function
Explanation:
Place the events of a fracture repair in order.
A. A hematoma will form and will form a temporary connection between the ends of the bones.
B. Fibroblasts and chondroblasts migrate from the periosteum and begin to produce fibrocartilage to connect the ends of the bones.
C. Osteoclasts resorb dead portions of the new bony area, and compact bone replaces spongy bone.
D. Osteoprogenitor cells differentiate into osteoblasts and produce spongy bone.
E. Phagocytes and osteoclasts begin to remove dead and damaged tissue.
A) A,B,E,C,D.B) A,E,B,D,C.C) E,A,B,D,C.D) A,E,D,B,C.
Answer:
The correct answer is: C) E,A,B,D,C.
Explanation:
Bone fractures occur when a trauma generated a breach in the continuity of the bone. When a bone fractures, a process called secondary healing starts.
The first step in fracture repair is the removal of dead tissues - this is done by specialized cells called phagocytes and osteoclasts, that proceed by "eating" the damaged tissues.
Next, a hematoma forms because the blood vessels surrounding the fractured bone were ruptured. This hematoma clots and forms the temporary frame for the process of healing that is happening.
Mesenchymal stem cells migrate to the area and begin to differentiate into fibroblasts and chondroblasts, which is important for the production of fibrocartilage, a tissue that will connect the ends of the broken bone.
Then, osteoprogenitor cells differentiate into osteoblasts, which are the cells that synthesize bone tissue. These osteoblasts will produce spongy bone. The newly-formed fibrocartilage tissue becomes calcified.
Finally, osteoclasts begin with a process called resorption, which consists of resorbing the dead portions of the new bony area. This resorption is coupled with osteoblasts' bone synthesis. These two processes that occur together are fundamental for bone remodeling, which will end up with the spongy bone being transformed into compact bone.
1. Describe the appearance of the root beer before the fermentation process.
2. Why were the yeast necessary in this experiment?
3. Why was the sucrose necessary in this experiment?
4. Why did we heat the water?
5. What is the yeast trying to do with the sugar?
6. What is the CO2 to the yeast?
Answer for this question
Root bark from the sassafras tree Sassafras albidum.
What is root bear?It typically has a big, foamy head, just like cola. Adding vanilla ice cream to make a root beer float is a well-known use.
Most commercial root beers have been flavored with artificial sassafras flavoring since the U.S. Food and Drug Administration outlawed a key component in 1960 due to its carcinogenicity, though a few use a sassafras.
Since the 1840s, root beer has been available for purchase at confectionery shops, and published root beer recipes date back to the 1860s.
The medicinal benefits of sassafras were widely known to both Native Americans and Europeans beyond its aromatic attributes, and druggists started peddling root beer for its therapeutic properties.
Therefore, Root bark from the sassafras tree Sassafras albidum.
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