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1. Summarize the three parts of the cell theory.
2 .Name 3 structures that Eukaryotic and Prokaryotic cells have common.
3. Differentiate (give the differences) between prokaryotic cells and eukaryotic cells.
4. Give one example of a specialized animal cell. Explain one structural feature that help it to do it's special job.
5. Give one example of a specialized plant cell. Explain one structural feature that help it to do it's special job.
6. What are three factors that affect the rate of diffusion? explain the effect of each factor.
7. What is the difference between simple diffusion and facilitated diffusion?
8. Compare (give similarities and differences) between diffusion and osmosis.
9. Why are diffusion and osmosis are important for living organisms?
Answers
Answer/Explanation:
[1] The three parts of the cell theory is all organisms are made of cells. Cells are the smallest unit of life and new cells arise from existing cells.
[2] The three structure that Eukaryotic and Prokaryotic cells have common is plasma membrane, ribosomes, cytoplasm, and DNA.
[3] The difference between prokaryotic cells and eukaryotic cells is prokaryotic cells has no nucleus while, eukaryotic cells have a nucleus.
[4] One example of a specialized animal cell is Muscle Cell. Muscle cells bring parts of the body closer together. They contain protein fibres that can contract when energy is available, making the cells shorter.
[5] One example of a specialized plant cell is cell wall. Cell wall shapes, supports, and protects the cell. It prevents the cell from absorbing too much water and bursting.
[6] The three factors that affect the rate of diffusion is temperature, concentration gradient, size of the molecule.
The size of the molecule: The smaller the molecule such as gas, the faster the rate of diffusion while the larger the molecules (liquid) the slower the rate of diffusionConcentration gradient: Diffusion takes place as long as there is a difference between the concentration gradient of substances across a barrier. The more is the concentration difference, the higher is the driving force, the faster the rate of diffusion. When the concentrations of the substance on either side of the barrier become equal, the diffusion stops.Temperature:The higher the temperature is, the faster the speed of diffusion. Temperature increases the K.E. (kinetic energy) of a molecule and it helps to move the molecule faster and hence the speed of diffusion increases.[7] The difference between simple diffusion and facilitated diffusion is simple diffusion, the movement of particles occurs along the direction of the concentration gradient. While in facilitated diffusion, the movement of molecules can occur both in direction and opposite of the concentration gradient.
[8] The similarities between diffusion and osmosis is they both particles move from an area of higher concentration to one of lower concentration. The difference between diffusion and osmosis is diffusion can occur in any mixture, including one that includes a semipermeable membrane, while osmosis always occurs across a semipermeable membrane.
[9] Diffusion and osmosis are important for living organisms because diffusion and osmosis both even forces inside cells and organisms as a total, expand water, nutrients and necessary chemicals from areas that contain a high concentration to areas that contain a low concentration.
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Related Questions
Which of the following does not occur in an aquatic ecosystem as a result of nutrient loading?
a. acidification of the water
b. algae growth as a result of eutrophication
c. degraded quality of water for human and livestock consumption
d. improved water habitats for human recreation
Answers
Answer:
D
Explanation:
Overdosing on nutrients, especially nitrogen and phosphorus, can act as fertilizer and promote an excessive quantity of algae development in water bodies. Thus, option C is correct.
What is nutrient loading?Eutrophication, a process wherein water bodies get an excessive amount of inorganic nutrients, mainly N and P, promotes an excessive growth of plants and algae, is caused by nutrient enrichment in aquatic water bodies.
The calculation of annual loads involves multiplying daily flow by daily nutrient concentration and averaging throughout the course of the year.
Since samples were only taken once a week at most, daily concentration measurements are not available; therefore, daily concentration data must be entered to calculate loads.
Therefore, improved water habitats for human recreation.
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URGENT!! NEED HELP IMMEDIATELY!!
Read about an early experiment that suggested one way simple cells could have emerged out of a “primordial soup” of complex molecules.
Write one to two sentences describing the environmental conditions in which the first cells likely emerged. How would these cells have survived?
Answers
Answer:
Here is the presentation I made. Good luck!
Explanation:
I won with this presentation two days ago so it is a guaranteed to be correct.
What did the comparative study on chytridiomycosis teach scientists studying white-nose syndrome in bats?Select one:a. Humans were responsible for the spread of chytridiomycosis, but not white-nose syndrome.b. A novel fungal infection could spread to colonies and cause dramatic population crashes, as seen in the comparative study.c. Chytridiomycosis affected only certain amphibians, so the comparative study could not teach the scientists anything useful.d. White-nose syndrome affects bats but does not cause death in organisms like chytridiomycosis does in amphibians.e. It was probably not a fungal infection affecting the bats and scientists needed to look elsewhere for a cause.
Answers
Answer:. A novel fungal infection could spread to colonies and cause dramatic population crashes, as seen in the comparative study
Explanation:
fungal diseases of wildlife, amphibian chytridiomycosis and bat white-nose syndrome are diseases in bat that have emerged rapidly and unexpectedly over the past several decades.
These diseases have lead to unprecedented local and global decrease in population of amphibian and bat species the infection colonize their territory and pose serious threats to biodiversity and ecosystem stability due to loss of many of them.
The federal program that provides free health care to the poor is a. Medicare. c. Social Security. b. Medicaid. d. the GI Bill of Rights. Please select the best answer from the choices provided
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Some members of a photosynthetic plant species are genetically resistant to an herbicide, while other members of the same species are not resistant to the herbicide. Which combination of events should cause the most effective replacement of the non-herbicide-resistant strain of plants by the resistant strain
Answers
Answer:
Formulate a solution that targets the cause of each strain of plants makeup of why the plant is resistant
Explanation:
Describe the two types of ions
Answers
Answer:
anions and cations
hope this helps you
You guys are the best
Answers
Answer: Thanks
Explanation:
I am here to help with any questions :)
the equation for phtotsynthesis
Answers
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
How did the move by the Portuguese royal family to Rio de Janeiro in 1808 diminish sentiments toward independence, and to what extent did the presence of the monarchy in Brazil lead to a break with Portugal in 1822?
Answers
The reason why the Portuguese loyal family left Portugal for Brazil was because of the invasion of the French under Napoleon I in 1807.
This arrival of the Portuguese heralded the Modernization that began to occur throughout Brazil.
Effect of the Presence of the Monarchy in BrazilThe presence of the Monarchy in Brazil was very instrumental in the political and social history of brazil. The presence of the Monarchy led to the following
Independence was gained with no significant struggle.The Portuguese crown prince becoming Emperor of Brazil in 1822. Slavery was abolished without a civil war in 1888.The Empire became a republic without a struggle in 1889.Learn more at
How many did you observe to be yellow
Answers
2.
Adaptations require a change in genes.
A.TRUE
FALSE
Answers
Answer:
The answer is True
When a black moth is crossed with a white moth, about 25% of their offspring are black. What is the genotypes of the parents
Answers
Answer:
Heterozygous
Explanation:
means having two different alleles of a particular gens
Which of these statements is true?
A. Species do not interact with each other in the course of succession.
B. During succession, new species move into an area and colonize it, and are later replaced by newer species.
C. Most ecological successions occur over 10 to 15 years.
Answers
Answer:
Opt B is the right ans....ig this is according to the charles darwins theory...survival of fittest
The true statement is "During succession, new species move into an area and colonize it, and are later replaced by newer species. Thus, the correct option is B.
What is Succession?Succession may be defined as the gradual and continuous replacement of one community by another community over time.
Succession is always taking place by the better competitor. In the bare area, new species arrive, stabilize themselves, and colonize themselves.
After a specific period of time, new species are replaced by them, and now they got stabilized in the same area. This cycle of succession gradually works in a similar manner.
Therefore, the correct option is B.
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Select choices that result from hydrogen bonding.
Answers
If a long tail is a dominant characteristic, in which case is the characteristic of a long tail definitely expressed?
when at least one parent has a long tail
when both parents have a long tail
when neither allele contains instructions for a long tail
when at least one allele contains instructions for a long tail
Answers
Answer:
When both parents have a long tail :)
Explanation:
the short tail trait is now recessive so it cant happen on its own. The offspring will most likely have a long tail just like thae parents :)
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Please rate and mark brainliest!!
Answer:
When at least one allele contains instructions for a long tail
Explanation:
Gregor Mendel discovered that an organism receives two forms of a gene called ALLELE for a particular trait. Each allele encodes or represent a different trait in that same gene. However, according to Mendel, one allele called DOMINANT allele is capable of masking the expression of the other allele, called RECESSIVE allele. This means that in a heterozygous state i.e. combination of the two different alleles, the dominant trait encoded by the dominant allele will always be expressed.
I will award Brainliest to the person who gives the best answer.
Which came first? The chicken or the egg?
Answers
Answer:
i mean the chicken woulda had to come first to lay the egg in the first place
Explanation:
Answer:
According to scientists chicken CE first because chicken are developed form of dinosaur
and dinosaur also lay eggs. But technically egg came first because The oldest fossils of dinosaur eggs and embryos are about 190 million years old. Archaeopteryx fossils, which are the oldest generally accepted as birds, are around 150 million years old, which means that birds in general came after eggs in general.
A molecule is considered to be organic contains
A( hydrogen
B( oxygen
C( carbon
D( nitrogen
Answers
Answer:
Your answer should be C.
Explanation:
An organic molecule is a molecule that contains carbon atoms (generally bonded to other carbon atoms as well as hydrogen atoms).
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Which of the following is NOT considered a sustainable-development strategy for management of Earth’s resources?
Answers
Answer:
what are the options...?
This is the complete question
Which of the following is not considered a sustainable development strategy for management of earths resources?A. Contour plowingB. Desertification C. Crop rotationD. Selective harvesting of tree
The following is NOT considered a sustainable-development strategy for management of Earth’s resources is Selective harvesting of trees.
What is a sustainable future?If a society wants to make use of materials which can be recycled, then it has good plans for building a sustainable future for itself as it would be self-dependent and not have to rely on other nations.
With this in mind, if a country wants to build a sustainable future for itself, then it would have to use local resources more because this would increase self-sufficiency and reduce dependency.
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what are the functions of the smooth endoplasmic reticulum
Answers
Answer:
The smooth endoplasmic reticulum makes cellular products like hormones and lipids.
For a more in depth explanation you could state it's responsible for the synthesis of lipids, steroids, and carbohydrates, as well as the metabolism of exogenous substances, such as drugs or toxins
Describe the roles of light, carbon dioxide, and water in the production of foox and oxygen
Answers
Answer:
Light is absorbed in the plant's leaves. Carbon dioxide is taken in through the stomata. Water is absorbed into the xylem through the roots carried through the plant to the leaves.
Explanation: Then the plant uses all of these ingredients to produce food and oxygen. The food is carried throughout the phloem and is then used to grow and develop while the oxygen is released out of the stomata.
5. Count the number of hydrogen ions, oxygens,
and electrons on both sides of the equation
shown. Are they the same?
Answers
Answer:
1 hydrogen ion, 2 oxygen atoms and 4elctrons
The number of hydrogen, ions, Oxygen and electrons on both sides of the equations are:
Hydrogen = 4
Oxygen = 2
Electrons on both sides are the same.
What are atoms?Atoms are the smallest unit of matter. Particles inside atoms are referred to as subatomic particles. These can be found throughout the atom in various places. The particles are charged.
A neutron is neutral, a proton is positively charged, and an electron is a negatively charged particle that revolves around the nucleus. The nucleus contains protons and neutrons.
The reaction is when hydrogen attaches with oxygen, it forms water. The formula of water is [tex]\rm H_2O[/tex].
Therefore, Hydrogen = 4, Oxygen = 2 and there are the same numbers of electrons on both sides of the equation.
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Help!! ASAPP!! It’s about the journey of parts of the blood
Answers
Answer:
Explanation: the blood can flow through vesals theres a white vesal but you have at least 3 blood vesals
What is the importance of chromosomes in the human body?
They move materials into and out of the cell.
They carry the genes that determine inherited traits,
They release the energy stored in food.
They assemble proteins needed by the body.
Answers
Answer:
B.) they carry the genes that determine inherited traits
Explanation:
To put it simply, chromosomes are important because they contain the entire (or at least the vast majority of) genetic information for an organism. The organism's DNA is contained within the chromosome as a long series of nucleotides that are organized into genes
Answer:
They carry genes that determine inherited traits. Chromosomes are the determining factor in cells that store each individuals' unique traits only found it that specific person. All humans have 23 pairs of chromosomes (a total of 46) in them.
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I need help with this 9th grade biology question
Answers
Answer:
what kind of a help you need?
Question 8(Multiple Choice Worth 1 points)
(04.03 MC)
During cellular respiration, which of the following is equal to the number of atoms of carbon in glucose?
Number of atoms of oxygen in water
Number of atoms of carbon in carbon dioxide
Total number of atoms of oxygen in water and oxygen gas
Total number of atoms of carbon in sugar and carbon dioxide
Answers
Total number of oxygen in carbon dioxide and water, i think
A circle with a diameter of 16cm
Answers
Explanation:
radius is 8 because radius is half of a diameter
1. The process many autotropbs go through to convert solar energy into chemical energy
Answers
Answer
the name of the process is photosynthesis
How many ducks are in a row
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The fossil record is best at preserving visible changes in organisms through geologic time. This visible change is referred to as
Answers
The fossil record is best at preserving visible changes in organisms through geologic time. This visible change is referred to as the evolutionary change.
The importance of fossil recordFossils are the remains or impressions of a historical organisms which are preserved as a mold or in rocks due to pressure.
Fossil records are information made concerning these historical organisms about:
the structure of the organisms, what they ate, what ate them, in what environment they lived, and the order in which they lived.When these rocks are studied, visible changes in organisms through geologic time are observed which is that simple life forms gradually evolved into more complex ones.
Therefore, evolutionary change. is that visible changes noticed in fossil records.
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What is anabolism? Give an example. What is catabolism also give an example
Answers
Answer:
Anabolism is the synthesis of complex molecules in living organisms from simpler ones together with the storage of energy.
Examples of anabolism: bone growth and mineralization, and muscle mass build-up.
Catabolism: the breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy.
Examples of Catabolism: glycolysis, the citric acid cycle, the breakdown of muscle protein in order to use amino acids as substrates for gluconeogenesis, the breakdown of fat in adipose tissue to fatty acids, and oxidative deamination of neurotransmitters by monoamine oxidase.