Answer:
When scientists focus on climate from before the past 100-150 years, they use records from physical, chemical and biological materials preserved within the geologic record. Organisms (such as diatoms, forams and coral) can serve as useful climate proxies. Other proxies include ice cores, tree rings, and sediment cores.
What is the most important organism on the food web?
Answer:
autotrophs
Explanation:
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If a plant cell is placed in water, how does its central vacuole typically respond?
a) It absorbs nutrients from the water.
b) It expels waste into the water.
c) It absorbs water.
d) It expels water.
what type of plant tissue does photosynthesis take place?
Answer:
Chloroplast
Explanation:
The light reactions of photosynthesis occur in the thylakoid membranes of the chloroplast.
Most of the mass in a large tree comes from?
Answer: Carbon is right
Explanation:
During photosynthesis carbon dioxide is pulled from the atmosphere and then captured into the tree's molecules and somehow it make the whole tree heavier.
PLEASE HELP I NEED HELP WITH THESE TWO QUESTIONS
Chromosomes are distributed randomly during anaphase I. What are the possible chromosome combinations in the two daughter cells? (Use DG, LG, DP, and
How does the random lining up of homologous chromosome in Metaphase 1 contribute to Genetic Variation?
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Question:
Chromosomes are distributed randomly during anaphase I. What are the possible chromosome combinations in the two daughter cells? (Use the following abbreviations for the chromosomes. Dark green -> DG; Light green -> LG; Dark purple-> DP, Light purple -> LP)
How does the random lining up of the homologous chromosome in Metaphase 1 contribute to Genetic Variation?
Answer:
Possible chromosome combinations:
LG,LP + DG,DP LG,DP + DG,LPThe random arrangement of tetrads is different in every cell going through the meiosis process. Any chromosome of the homologous pair might face any of the poles and then migrate to it. Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the number of variations in each cell is different and depends on the chromosomes that form that cell.
Explanation:
1) During meiosis, organisms can produce at least four different gametes. Anaphase occurs after the prophase where crossing-over has occurred. During anaphase 1, the homologous chromosomes separate, migrating to different poles.
The possible chromosome combinations in the two daughter cells of the exposed example are
LG,LP + DG,DP LG,DP + DG,LP2) Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
During metaphase I, homologous pairs together migrate to the equatorial plane, where they randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Any chromosome of the homologous pair might face any of the poles and then migrate to it. Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. This random order in the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get the same genetic charge.
Possible chromosome combinations:
LG,LP + DG,DP LG,DP + DG,LP
The random arrangement of tetrads is different in every cell browsing the meiosis process. Any chromosome of the homologous pair might face any of the poles and then migrate to it.
Anaphase I
Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the amount of variations in each cell is different and depends on the chromosomes that form that cell.
During meiosis, organisms can produce a minimum of four different gametes. Anaphase occurs after the prophase where crossing-over has occurred. During anaphase 1, the homologous chromosomes separate, migrating to different poles.
The possible chromosome combinations within the two daughter cells of the exposed example are-
LG,LP + DG,DP LG,DP + DG,LP
Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
Metaphase I
During metaphase I, homologous pairs together migrate to the equatorial plane, where they randomly aline with their kinetochores facing opposite poles.
The random arrangement of tetrads is different in every cell browsing the meiosis process. There is no equal alinement between the two cells.
When tetrads aline within the equatorial plane, there's no predetermined order for every one of the homologous chromosomes of every tetrad to face one among the poles then migrate to it while separating.
Any chromosome of the homologous pair might face any of the poles then migrate thereto. Each of the chromosomes has two possibilities for orientation at the plane.
When the new haploid cells are formed, the amount of variations in each cell is additionally different and depends on the chromosomes that form that cell.
This random order within the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get an equivalent genetic charge.
Therefore,the combinations of two daughter cells LG,LP + DG,DP and LG,DP + DG,LP.
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Blood:
A
Is pumped from the heart into the veins
B
Enters the right atrium from the lungs
C
travel to the body systems from the left ventricle
D
Is not involved in temperature control
I NEED HELP PLEASE
most respiration occurs in oragnelles called
Answer:
mitochondrion
Explanation:
Which two animals are able to generate internal heat to maintain their body temperature in a coid environment
Parrots and Dogs are able to generate internal heat to maintain their body temperature in a coid environment. Parrots and Dogs are Endotherms. They generate most of the heat they need internally, when it's cold outside.
Which atom contains exactly 15 protons?
Oxygen
Phosphorus
Sulfur
Nitrogen
Answer: Phosphorus
Explanation:
What examples of weathering and erosion do you see in your community? Which erosion control devices exist, or which devices would be helpful to put in place?
Answer:
Erosion Control Blankets Similar in make and use to fiber rolls, erosion control blankets are also used to slow down water runoff and soil erosion on slopes. These blankets are carefully laid down onto the slope soil, their upper edges buried into the ground to keep them in place
Explanation:
hope it helps
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Answer:
erosion control blankets are similar in the making which is also used to slow down water runoff and soil erosion on slopes
I hope this helps you have a great day!
Which two elements are nanowhiskers usually made of?
Answer:
Fullerene nanowhiskers are thin crystalline fibers composed of fullerene molecules, including C60, C70, endohedral, or functionalized fullerenes.
Explanation:
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1.Is cystic fibrosis a beneficial or harmful mutation? Explain.
2. What are some of the symptoms of cystic fibrosis?
3.How does a person get cystic fibrosis? How are their cells different from that of a person without cystic fibrosis?
4.How has treatment improved for cystic fibrosis patients over the years?
The sequence of bases on one strand of a DNA molecule is AGT GTA GAC. After replication of the strand of DNA, what is the sequence of nitrogen bases on the complementary (opposite)strand?
Answer:
TCA CAT CTG
Explanation:
If there is an A, then on the complementary strnad there will be a T (and vice versa) since Adenine (A) always bonds with Thymine (T)
If there is an C, then on the complementary strnad there will be a G (and vice versa) since Cytosine (C) always bonds with Guanine (G)
The sequence of nitrogen bases on the complementary (opposite) strand is TCA CAT CTG
What are complementary strands of DNA?Complementary strand is either of the two chains that make up a double helix of DNA, with corresponding positions on the two chains being composed of a pair of complementary bases.
The complementary strand for DNA must follow the base pairing and polarity rules. Pairing means that A=T and G=C. Polarity means that the strands have to run in opposite directions.
The upper strand of DNA is the "mRNA-like" strand. The lower strand is the strand that is complementary to the mRNA.
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Assume that (B) is dominant and (b) is recessive: bb mates with bb
All the offspring will show the recessive trait
All the offspring will show the dominant trait
About 50% of the offspring will show the recessive trait
About 75% of the offspring will show the dominant trait
Answer:
Explanation:
A
Assume that (B) genotype is dominant and (b) genotype is recessive: bb mates with bb. All the offspring will show the recessive trait. thus option A is correct.
What is genotype ?A genotype can be defined as the total set of heritable characters carrying genes transferred from parents to offspring; These genes involve in encoding specific features that can be physically expressed in an organism called as phenotype.
The genotypes of the gene can be represented in three form on the basis of allele arrangement such as homozygous dominant (PP), Heterozygous (Pp) and Homozygous recessive (pp).
genotyping is a method is used to determine the genotype of an individual by using biological assay and the techniques used are, DNA fragment analysis, PCR, allele-specific oligonucleotide (ASO) probes, nucleic acid hybridization, DNA microarrays or beads, and DNA sequencing.
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Calculate the momentum of a 0.145 kg rock thrown at a speed of 40.0 m/s.
a
5.8 kg*m/s
b
.0036 kg*m/s
c
275 kg*m/s
Answer:
5.8 kg*m / s
Explanation:
p=m*v
.145*40 =5.8
The variety of organisms within an ecosystem is characteristic of which type of diversity?
Genetic diversity
b. Ecosystem diversity
c. Species diversity
d. Regional diversity
Please select the best answer fron] the choices provided
B
оооо
Answer: ecosystem diversity
pretend that you touch a hot pan on the stove, and you immedentially pull your hand away without thinking about it. in this scenatrio, what is the stimulus and the response?
Answer:
The stimulus the thing that stimulates you is the hot pan because you were du.mb and decided to touch the hot pan. The response is you yanking your hand away from the heat because for some reason you thought touching a hot pan was a good idea.
Explanation:
Dude seriously, be conscious.
If The RNA strand is AUG, what is the protein it produces.
Answer:
methionine
Explanation:
According to the codon chart (see the attached image), the RNA strand AUG will produce methionine as its translation product during the process of protein sysnthesis.
The table of codons is a chart that shows how genetic codes are translated into their respective amino acids during protein synthesis. The AUG codon also represents a signifier of the beginning of the translation process apart from coding for methionine.
Does anyone know how to do this???
Which body of the solar system is the largest?
Answer/Explanation: The Sun is still by far the most massive body in the Solar System (it contains more than 99.8% of all the system's mass).
-Bababooeyboy
Answer:
he Sun is still by far the most massive body in the Solar System (it contains more than 99.8% of all the system's mass
Explanation:
Which of the following would be true if you stood on the moon?
A
Your mass would increase.
B
Your mass would stay the same.
C
You would weigh the same as you do on Earth.
D
You would would weigh more than you do on Earth.
*Dont respond if you dont know, irrelevant answers will be reported and removed*
Answer:
B. Your mass would stay the same.
Explanation:
Answer:
b
Explanation:
your mass would stay the same
Match the term with its description. Match Term Definition Anaerobic respiration A) The production of energy without the presence of oxygen Pyruvate B) An organic molecule that occurs as an intermediate in many metabolic processes Aerobic respiration C) The chemical breakdown of a substance Fermentation D) The breakdown of food to create energy in the presence of oxygen
Answer:
The correct match of terms with their descriptions are -
A. anaerobic respiration
B. pyruvate
C. Fermentation
D. aerobic respiration.
Explanation:
Anaerobic respiration is the process that involves the production of energy from sugar or carbohydrate in absence of oxygen.
Pyruvate is the intermediate product or substance of the various metabolic process including cellular respiration.
The chemical breakdown of the sugars is known as fermentation. It takes place due to the enzymatic reaction to change in the organic substance.
An aerobic respiration occurs in most eukaryotic organism in order to get energy by the breakdown of sugar or food in presence of the oxygen
Is the brain made up of Neurons itself?
Please don't answer unless you know the answer
Answer:
Yup it is made of neutrons itself composed of both neutrons and glial cells
Can someone please tell me an explanation of Interpahse in mitosis please? Also please dont copy and paste
Answer: at the point when the cell develops and duplicates its DNA prior to moving into mitosis. During mitosis, chromosomes will adjust, isolated, and move into new daughter cells.
Human p53 is a tumor-suppressor gene located on chromosome 17. The function of this gene is to prevent cells with damaged DNA from undergoing mitosis. What would most likely result if there were a mutation that decreased the function of the p53 gene?
The answer is “Germs cells would undergo only one meiotic division.
Explanation:
I remember learning this in my biology class
Single amino acid changes in p53 caused by TP53 gene mutations make the protein less functional. Without p53, cell proliferation is not efficiently controlled, and DNA damage can build up in cells.
How p53 gene is important?Such cells might continue to divide uncontrollably, which would promote the development of tumors. By stopping the cell cycle to give the repair mechanisms time to restore genomic stability, p53 plays a significant function as a DNA repair facilitator.
Additionally, p53 adopted a variety of roles to directly influence the operation of different DNA-repair mechanisms.
Cancer cells may develop and spread throughout the body as a result of mutations (changes) in the p53 gene.
Therefore, numerous cancer kinds and the genetic disorder Li-Fraumeni syndrome have both been linked to these alterations.
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What are the three ways that minerals can form?
They are formed from the cooling and solidification of molten magma. that is the primary means of formation.
They could be precipitated out of solution.
They are also formed during metamorphism, under high temperature and pressure, minerals recrystalize and form new minerals.
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brainliest?
5 star?
Answer:
1. igneous
2. sedimentary
3. metamorphic
Explanation:
What is the difference between an embryo
Toddler - A child 12 to 36 months old
Embryo - An embryo is an early stage of development of a organism
Foetus - An unborn human more than eight weeks after conception
Neonate - A newborn Child or an infant less than four weeks old
Infants - The term "infant" is typically applied to young children under one year of age
Explanation:
An embryo is the early stage of human development in which organs are critical body structures are formed. An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization of the egg.
What is the Pros and cons of genetic engineering?
Answer:
Pros and Cons of Genetic Engineering
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.Getting Rid of All Illnesses in Young and Unborn Children.
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.Getting Rid of All Illnesses in Young and Unborn Children.Potential to Live Longer.
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.Getting Rid of All Illnesses in Young and Unborn Children.Potential to Live Longer.Produce New Foods.
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.Getting Rid of All Illnesses in Young and Unborn Children.Potential to Live Longer.Produce New Foods.Organisms Can be 'Tailor-Made'
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.Getting Rid of All Illnesses in Young and Unborn Children.Potential to Live Longer.Produce New Foods.Organisms Can be 'Tailor-Made'Faster Growth in Animals and Plants.
Pros and Cons of Genetic EngineeringTackling and Defeating Diseases.Getting Rid of All Illnesses in Young and Unborn Children.Potential to Live Longer.Produce New Foods.Organisms Can be 'Tailor-Made'Faster Growth in Animals and Plants.Pest and Disease Resistance
Answer:
Explanation:1
Explain how the geologic time scale is used to organize Earth’s history.
Think about how the geologic time scale was created and how it is divided. Then answer the following questions.
How did scientists from the geologic time scale?
How is this scale organized?
What processes changed the Earth's environment during Precambrian time?
Answer:
The first principle you need to understand about geologic time is that the laws of nature are always the same. This means that the laws describing how things work are the same today as they were billions of years ago. For example, water freezes at 0°C. This law has always been true and always will be true. Knowing the natural laws helps you think about Earth’s past, because it gives you clues about how things happened very long ago. It means that we can use present-day processes to interpret the past. Imagine you find fossils of sea animals in a rock. The laws of nature say that sea animals must live in the sea. That law has never changed, so the rock must have formed near the sea. The rock may be millions of years old, but the fossils in it are a clue for us today about how it formed.
Now imagine that you find that same rock with fossils of a sea animal in a place that is very dry and nowhere near the sea. How could that be? Remember that the laws of nature never change. Therefore, the fossil means that the rock definitely formed by the sea. This tells you that even though the area is now dry, it must have once been underwater. Clues like this have helped scientists learn that Earth’s surface features have changed many times. Spots that were once covered by warm seas may now be cool and dry. Places that now have tall mountains may have once been low, flat ground. These kinds of changes take place over many millions of years, but they are still slowly going on today. The place where you live right now may look very different in the far future.
The first principle you need to understand about geologic time is that the laws of nature are always the same.
What is the Time scale?Water, for instance, freezes at 0°C. This rule has held and will continue to hold forever.
Understanding natural principles facilitate historical thinking because it provides hints about how things were very long ago. It implies that we can interpret the past using current methods.
The rock must have formed close to the sea because this law has never changed.
Therefore, The first principle you need to understand about geologic time is that the laws of nature are always the same.
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What would be the main problem if every trait followed a blending pattern?
Answer:
Blending inheritance leads to the averaging out of every characteristic, which as the engineer Fleming Jenkin pointed out, would make natural selection impossible if blending were the mechanism of inheritance.
Explanation: