Answer:
The rock components of the crust are slowly but constantly being changed from one form to another and the processes involved are summarized in the rock cycle (Figure 3.2). The rock cycle is driven by two forces: (1) Earth’s internal heat engine, which moves material around in the core and the mantle and leads to slow but significant changes within the crust, and (2) the hydrological cycle, which is the movement of water, ice, and air at the surface, and is powered by the sun.The rock cycle is still active on Earth because our core is hot enough to keep the mantle moving, our atmosphere is relatively thick, and we have liquid water. On some other planets or their satellites, such as the Moon, the rock cycle is virtually dead because the core is no longer hot enough to drive mantle convection and there is no atmosphere or liquid water.
Explanation:
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pick me as the brainliest
What are the primary processes that increase genetic variability?
A. sexual reproduction and mutations
B. cloning and binary fission
C. asexual reproduction and mitosis
D. budding and recombination
Answer:
A
Explanation:
How does a Soccer Ball use Inertia
If a molecule of DNA has 30% Adenine how much of the other bases will be present?
Thymine: 30% Cytosine: 15% Guanine: 15%
Thymine: 30% Cytosine: 15% Guanine: 15%
Thymine: 30% Cytosine: 20% Guanine: 20%
Thymine: 30% Cytosine: 20% Guanine: 20%
Thymine: 15% Cytosine: 30% Guanine: 30%
Thymine: 15% Cytosine: 30% Guanine: 30%
Thymine: 20% Cytosine: 30% Guanine: 30%
Answer:
If a DNA molecule has 30% Adenine the percentage of the other bases is Thymine: 30% Cytosine: 20% Guanine: 20%.
Explanation:
When the percentage that a base has in a DNA molecule is given, the percentage of the other bases can be known using the Chargaff's base pair rule.
A DNA molecule has the information of the genome of a living being, according to a specific sequence of its nitrogenous bases adenine, guanine, cytosine and thymine.
Chargaff was able to establish that in a DNA molecule the ratio of purine : pyrimidine of 1:1, so there must be the same amount of thymine as adenine and a similar amount of guanine for the cytosine, taking into account the complementarity of bases.
Taking into account the law of the base pair, if in a DNA chain there is 30% of Adenine, in the molecule there is:
Adenine 30%. Thymine 30%. Cytosine 20%. Guanine 20%. Total ..... 100%In this case, the Chargaff rule is useful to determine the percentage of nitrogenous bases that exist in a DNA molecule, knowing the percentage of a single base.
1. B= Brown eyes b= blue eyes Mom= Bb Dad= BB What percentage of their children will have Brown eyes and what percentage will have blue eyes?
% of Brown eyes-
% of Blue eyes-
What is the advantage of genetic connections and disadvantage
Answer:
A sense of relief from uncertainty.
it reduced the risk of cancer
1.
All living things are composed of cells.
Which action is not accomplished by repeated cell
division?
A.
a plant developing new leaves
B.
a broken bone growing back together
C.
a plant using sunlight to make its own foods
food
D.
an eight-pound baby growing into a 100-pound
teenager

Answer:
C
Explanation:
Everything else has to do with growth but C is talking about food/energy.
A plant using sunlight to make its own foods is accomplished by repeated cell division.
What do you mean by cell division?Cell division is the process by which a parent cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome before dividing.
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life.
In eukaryotic cells, or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase.
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Cytoplasm is found...
A only in prokaryotic cells.
B in all cells.
C. in plant cells only.
Answer:
C i think
Explanation:
sorry if its wrong :(
Read through the list of organisms below. Of the organisms below, which ones are autotrophs? . aquatic photosynthetic bacteria a blue whale cheetah green-winged macaw honeybee humans maple tree phytoplankton rye grass tulips
Answer:
aquatic photosynthetic bacteria, maple tree, phytoplankton rye grass tulips
Explanation:
All are plants or does phtosynthesis which is what autotrophs are.
pls help I'll mark brainliest!
Answer:
4th one
Explanation:
I did this in 4th grade
_____inherited traits that increase an organisms chance of survival, also determine an organism’s niche.
Answer:
Adaptations are inherited traits that increase an organism's chance of survival, also determine an organism’s niche.
Explanation:
Adaptations can be defined as inherited traits that increase an organism's chance of survival and determine its niche. An organism's niche is the place it has in an ecosystem it inhabits - how it lives and survives in it and how it affects it and other species.
Adaptations are a necessary occurrence. As the organism's habitat changes, it has to change as well. In order words, it has to adapt. This process is supported by natural selection - the mechanism that ensures that an advantageous characteristic will become the most common one.
An example of adaptation is what an animal's teeth look like. The shape of an animal's teeth heavily depends on its diet. If it's a herbivore, it will have many molars for chewing grass and plants, and if it's a carnivore, it will have sharp canines to help it tear meat.
explain why bacteria, in particular, are very useful organism in the process of genetic engineering
Answer: The bacterial cells are being used in order to create genes and produce human insulin. The bacteria is used to make protein, which is a good thing. I hope this at least helped, and I believe this is why bacteria is useful organism in the process of genetic engineering.
anybody can help me with this ?
- 40 points .
Answer:
Explanation:
Endangered species because if the poachers keep hunting for its horns they may be extinct in few years
What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron
Answer:
movement of chemicals into the dendrites of the neuron
Explanation:
Nerve impulse occurs when electrical gradient is moved across the plasma membrane of a resting neuron this is done when the neuron receives a chemical signal from another cell or some other type of stimulus. This action potential then travels down the neuron’s axon as an electric current.
Resting potential occurs because of the difference in electrical charge across the plasma membrane of a neuron.
An electrical gradient is maintained by the sodium-potassium pump this is done across the plasma membrane of a neuron when it is not transmitting a nerve impulse this is the resting potential of the neuron.
Answer:
its B on Edge :))
Explanation:
taking test rn
A student draws a model of cells in a solution. The arrows indicate the direction water will move with respect to each of the cells.
In which type of solution are the cells?
Answer:isotoni
Explanation:
Answer:
isotonic
Explanation:
Please help me to do this thank you
1 .Electrophoresis is a laboratory technique used to separate DNA, RNA, or protein molecules based on their size and electrical charge.
2.Gel electrophoresis is a technique used to separate DNA fragments (or other macromolecules, such as RNA and proteins) based on their size and charge.
... [All DNA molecules have the same amount of charge per mass. Because of this, gel electrophoresis of DNA fragments separates them based on size only.]
3.Gel electrophoresis [ pls chck tiz answer!]
4.DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.
5.A buffer is a solution that can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively stable.
Why buffer is used in electrophoresis?High-quality buffers are an important part of electrophoresis. They allow a current to be carried through the sample while resisting pH changes in the overall solution.
FIRST GETS BRAINLIEST so hurry
Answer:
Your answser should be C
Explanation:
Answer:
c
Explanation:
Do to Mendel's law of segregation ....?
A) homologous chromosomes pair up and cross during prophase 1 of meiosis
B) alleles belonging to the same gene will never end up in the same gamete during mitosis
C) alleles belonging to the same gene will never end up in the same gamete during meiosis
D) genes located on non-homologous chromosomes sort independently of one another during the formation of gametes
NEED HELP ASAP!
Answer: A
Explanation:
What structures are present in an animal cell but not in a plant cell
Alleles for the A and B blood are codominant. Type O is a recessive trait. Which set of parents can most likely produce a child with type O blood?
Answer:
more common for parents with type O to pass it down if they have both O blood types
In the 1950s, the structure of DNA was discovered by using models and x-ray chromatography. Currently, science has used advanced technology to completely map out the genes in a human’s body. What would be the best advantage of using this information?
Answer:
Recently around 2008 i believe a female scientist found the end of our chromosomes and what the enzyme telomerase did.
Explanation:
What was awesome was they telomerase fixes the small fragements of DNA that degrade over time. A study was done on mine one was treated with the enzyme the other was not keep in mind the mice were old. The reated mice actually seemed to reverse age because its fur became shinier and its bones strong it just seemed healtehr and it was. The other of course stayed old. So the discoveries help push our life expectancy farther than we used to think was convinient
Answer:
gene therapy to correct defective genes that cause diseases.
Explanation: i hope this is right.
What is menstruation
Answer:
a period
bleeding from the woman's parts
Explanation:
Which of the following tools, produced through the cooperation of many nations, was designed to conduct space research and is
continuously manned by a team of astronauts?
A.
Hubble Telescope
B
International Space Station
C
Spitzer Space Telescope
Chandra X-ray Observatory
D
Answer:
B ISS
Explanation:
The ISS is a cooperation of the worlds largest nations and can have Russian astronauts, Americans and Italians i believe
NEED THIS ASAP, ITS A FINAL!!! WILL MARK BRAINLIEST IF CORRECT.
The following chart shows the amount of four different minerals found in lake water and in the cytoplasm of algae:
Which mineral(s) did the algae uptake through active transport?
Calcium and sodium
Nitrogen and potassium
Nitrogen only
Potassium and sodium
Answer:
Calcium and sodium
Explanation:
Answer: Calcium and sodium
Explanation:Here is the chart
Jaguar vs Sea-Going Crocodile who do you think will win?
I think that the crocodile will win in both land and water because its way to aggressive and fierce than the jaguar. One bite from the croc will shatter the jaguars bones, and it has tough armor. The jaguar is also at a size disadvantage and is outclassed in terms of weaponry. So who do you think will win?
Answer:
THE CROC 2020!!!!!!
Explanation:
Answer:
crocodile will win
Explanation:
hope helps you
What is Grow food??????? and wat is the answer :)
Glycolysis results in the net production of which of the following sets of molecules per glucose molecule?
Answer:
Glycolosis has a net gain of 2 atp
Explanation:
It produces 4 but you invest 2 to start so its only net gain of 2
You also ge 2 pyruvate and 2 NADH
Two pyruvate molecules, two ATP molecules, and two NADH molecules are the substances produced in the process of glycolysis.
These substances are gained from glucose in order to generate energy which is needed in different activities of the cell. ATP is the molecule which is used by the cell for doing activities which needs energy.
Both pyruvate and NADH molecules are also converted into ATP molecules in the end and used by the cell so we can conclude that in the process of glycolysis, two pyruvate, two ATP, and two NADH molecules are formed.
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What would cause a change in the phenotype of an offspring?
Answer:
In most sexually reproducing organisms, each individual has two alleles for each gene (one from each parent). This pair of alleles is called a genotype and determines the organism's appearance, or phenotype.
Explanation:
Need HELP
Of the items listed, what is something that could be used to help tell the history of an area?
rock layers
animal habitats
human settlements
plant life
Answer:
rock layers becuase fossils and other ancient things could be in there
Deletion of a DNA base from a gene affects an organism by—
Causing future gametes to have additional chromosomes
Changing the sequence of amino acids in a protein
Causing chromosome fragments to form long chains
Changing the structure of ribose sugar in nucleic acids
Answer:
Deletion of a DNA base from a gene affects an organism by changing the sequence of amino acids in a protein.
Explanation:
A DNA fragment forms a gene, with a specific sequence of nitrogenous bases, which determines the synthesis of a specific protein. When a deletion of a base occurs in such a gene, it affects:
Transcription of the mRNA, which will have the sequence of altered bases. During translation, the mRNA codons will encode at least one different amino acid. The structure of the synthesized protein, which will be altered by changes in its amino acid sequence.In summary, the deletion of a base in the DNA will affect the protein to be synthesized by changing the amino acid sequence of its structure.
The other options are not possible, because the deletion of a base in the DNA of a gene
Does not influence the number of chromosomes that the gametes will have.
It does not produce long chains in the chromosomes.
It does not affect the ribose structure of the nucleic acids.
Deletion of a DNA base from a gene affects an organism by :
B) Changing the sequence of amino acids in a protein.
DNADeletion of a DNA base from a gene affects an organism by the changing the sequence of amino acids in a protein.
A DNA part shapes a quality, with a particular arrangement of nitrogenous bases, which decides the blend of a particular protein. When a erasure of a base happens in such a quality.
Transcription of the mRNA, which is able have the arrangement of changed bases.
The structure of the synthesized protein, which can be changed by changes in its amino corrosive sequence.
Thus, the correct answer is B.
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Why were garden peas a good choice for a study of heredity?
Answer:
pea plants because they were easy to grow, could be bred rapidly, and several observable characteristics, like petal color and pea color.
Explanation: