Answer:
A or D
Explanation:
Answer: D: stem cell undergoes mitosis, two daughter cells are produced, one daughter cell is a neuron, one daughter cell is identecial to stem cell.
Explanation:
. Jack and Jill are thinking about starting a family and they come to you with a question about a rare recessive genetic disease called Alpers Syndrome. Alpers causes progressive neurodegeneration in infants and children and is usually lethal within the first 10 years of life. Jack's grandfather had a brother die of Alpers Syndrome, while Jill has no family history of the disease. If the frequency of heterozygotes for Alpers is 1 in 2000 in the general population, what is the chance that Jack and Jill will have a child with Alpers Syndrome? (Be sure to completely reduce your answer.)
Answer:
The chance of having a Child who is a Heterozygote is 50% , The chance of having a child that will completely come down with Alpers syndrome is 0%
Explanation:
Jack has a history of Alpers in his family
Jill has no history
lets assume Jack is a carrier : Ab ( because that is how he could have survived the first 10 lethal years )
Jill : AA
Therefore the probability/chance of Jack and Jill having a child with Alpers ( carrier ) syndrome will be 50 % as shown below
AA * Ab = AA , Ab, AA, Ab
The child produced by Jack and Jill will only be a carrier of the syndrome and not completely affected by the syndrome
Earth's mantle consists of
A) solid rock
B) molten rock
C) liquid metal
D) gases
Answer: b
Explanation: because the lava
How does gel electrophoresis work? Group of answer choices DNA is negatively charged. When an electrical current is passed through a gel, the DNA is repelled by the nearby negative current and pushed across the gel towards the positively charged side. DNA is positively charged. When an electrical current is passed through a gel, the DNA is repelled by the nearby negative current and pushed across the gel towards the positively charged side. DNA is negatively charged. When an electrical current is passed through a gel, the DNA is repelled by the nearby positive current and pushed across the gel towards the negatively charged side. DNA has no charge. When a current is passed through a gel, the DNA is repelled by the negative current and pushed across the gel towards the positively charged side.
Answer:
DNA is negatively charged. When an electrical current is passed through a gel, the DNA is repelled by the nearby negative current and pushed across the gel towards the positively charged side.
Explanation:
Electrophoresis has become a standard molecular biology technique. This technique is based on the use of a constant-uniform electric field that enables the separation and identification of DNA fragments with different lengths, which form bands in the electrophoresis gel. Electrophoresis can be used to analyze not only DNA, but also RNA and proteins. During electrophoresis, the fragments of DNA that are negatively charged will migrate towards the positively charged electrode, where the duration of this movement will depend on the size of the DNA fragment, as well as of the pore size in the gel.
tropical rain forests, grass land and desserts are know for?
please help this is science not really biology the page that is like a peach color are fossils or different layers of rocks with fossils ill also brainlist
Answer:
The fossil would be approximately 3.7 million years old
Explanation:
How is cho and chon and Chonp used in bio molecules
HELPOPPPP PLEASE !
Answer:
Carbon , Hydrogen, Oxygen
Carbon , Hydrogen, Oxygen
Carbon , Hydrogen, Oxygen, Nitrogen
Carbon , Hydrogen, Oxygen, Nitrogen, Phosphorous
Explanation:
When you run around a track, which type of energy are you
demonstrating?
a mechanical energy
b potential energy
c kinetic energy
d two of the above
Answer:
Kinetic Energy
Explanation:
What is the main advantage to using satellites to measure climate change?
a. They can measure aspects of climate globally.
b. They are unaffected by the weather conditions they measure.
c. They are a universal tool for measuring all factors of climate.
d. They can measure the amount of rainfall a specific area receives.
Answer:
What is the main advantage to using satellites to measure climate change?
Explanation:
answer A...Satellites in a low earth orbit can directly monitor the climate from their position within or just above the atmosphere, and can provide near-global coverage as they scan over different swathes of ground with each orbit.
A. Satellites can measure aspects of climate globally is the main advantages of using a satellite to measure climate condition.
How do satellites measure climate?In geostationary circle, satellites can persistently screen a specific district continuous. Satellites in a low earth circle can straightforwardly quantify the environment condition from over the air and can give close worldwide inclusion as they filter over various wraps of ground with each circle.
What is used to measure climate?Thermometers, downpour checks and different instruments are utilized to track the climate. Also, mechanized organizations of logical instruments screen climate and environment at the entire hours of the constantly, from one side of the planet to the other.
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Eukuaryotic cells are different from prokaryotic cells because eukaryotic cells
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.
Hope this helps :)
Which part of the compound light microscope provides the light source? (4 points)
Image of a compound microscope with letters A to F showing various parts. A is used for magnification and is at the top of the microscope. B is used to maintain proper distance between lenses. C is used for magnification and has three pieces that turn. D lets light into the slide. E supports the slide. F reflects light towards the eyepiece.
Group of answer choices
Part E
Part B
Part F
Part A
Answer:
part F of the microscope is the compound light
Explanation:
Among the given options, part F of the compound light microscope provides the light source. Thus, the correct option for this question is C.
What is a Light microscope?A light microscope may be defined as a type of laboratory instrument which is significantly used to view objects or samples which are extremely small to be seen with the unaided eye.
According to the context of this question, the components of the compound microscope are divided into six parts. Among these, each part carries a special function. For example, part A is used for magnification and is at the top of the microscope. While part B is used to maintain proper distance between lenses. and so on.
Similarly, part F significantly reflects light towards the eyepiece. This is the region or component that typically provides the light source to the compound light microscope.
Therefore, part F of the compound light microscope provides the light source. Thus, the correct option for this question is C.
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why does a muscle cell have more mitochondria than other cells?
Answer:
muscle cell, sperm cell,apical meristem cell, liver cell and kidney cell
In pea plants, flower color is controlled by a pair of alleles where purple (P) is dominant to white (p). Stem length is controlled by another pair of alleles where tall (T) is dominant to short (t). These two allele pairs segregate independently. Suppose you have a pea plant that has purple flowers and tall stems and you wish to carry out a testcross in order to determine its genotype. Complete the predictions using the correct terms.
Complete question:
In pea plants, flower color is controlled by a pair of alleles where purple (P) is dominant to white (p). Stem length is controlled by another pair of alleles where tall (T) is dominant to short (t). These two allele pairs segregate independently. Suppose you have a pea plant that has purple flowers and tall stems and you wish to carry out a testcross in order to determine its genotype. Complete the predictions using the correct terms.
1. In order to carry out the testcross, you should cross your original pea plant with another pea plant whose phenotype is -------
2. If you examine 100 F₁ plants from the testcross and find that they all have purple flowers with tall stems, you should conclude that the genotype of your original pea plant is -------
3. If you examine 100 F₁ plants from the testcross and find that 44 have purple flowers with tall stems and 56 have purple flowers with short stems, you should conclude that the genotype of your original pea plant is -------
4. If you examine 100 F₁ plants from the testcross and find that 53 have purple flowers with tall stems and 47 have white flowers with tall stems, you should conclude that the genotype of your original pea plant is -------
5. If you examine 100 F₁ plants from the testcross and find that 23 have purple flowers with tall stems, 26 have white flowers and tall stems, 24 have purple flowers with short stems, and 27 have white flowers with short stems, you should conclude that the genotype of your original pea plant is --
Note: You will find the complete answer and explanation in the attached file "peaplants1" due to technical problems.
The food web shows the flow of energy through a sagebrush-steppe ecosystem.
Which of these organisms are in a trophic level that receives a larger percentage of the energy captured by the producers than the percentage received at the bats’ trophic level?
Mountain lions
Ground squirrels
Snakes
Hawks
Answer:
D. Ground squirrels
Explanation:
Took the test
Ground squirrels are at a trophic level that receives a larger percentage of the energy they consume as producers than the percentage received at the trophic level of bats. So, the correct option is B.
What is Trophic level?The trophic level of an organism is defined as the position it occupies in a food web where a food chain is a succession of organisms that eat other organisms and are themselves eaten. An organism's trophic level is the number of steps from the beginning of the chain.
Organisms at the lower trophic level have the highest percentage of energy compared to those at the higher trophic level that have the lowest percentage of energy. For the example above, if a ground squirrel has 100% energy, the next trophic level will receive 10% of the total energy from a lower trophic level that only has 10%, other higher trophic levels only receive 1%, then the next level Only 0.1%
Therefore, the correct option is B.
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What characteristic sets the planets apart from the stars, Sun, and Moon?
Answer:
for a celestial body to be a planet of the solar system, it must meet three conditions: it must be in orbit around the Sun, have been molded by its own gravity into a round or nearly round shape, and have “cleared the neighbourhood around its orbit,
Explanation:
Which of the following statements regarding the cytoskeletal protein FtsZ are correct? Check All That Apply FtsZ localization determines the site of cell wall growth by recruiting PBPs for peptidoglycan synthesis. FtsZ localization determines the site of cell wall growth by recruiting PBPs for peptidoglycan synthesis. FtsZ colocalizes with MinCDE proteins. FtsZ colocalizes with MinCDE proteins. FtsZ is a homologue of the eukaryotic protein actin. FtsZ is a homologue of the eukaryotic protein actin. Filaments of FtsZ become anchored to the peptidoglycan. Filaments of FtsZ become anchored to the peptidoglycan. FtsZ polymerizes to form the Z ring that determines the site of septum formation.
Answer:
-FtsZ localization determines the site of cell wall growth by recruiting PBPs for -peptidoglycan synthesis.
- FtsZ polymerizes to form the Z ring that determines the site of septum formation
Explanation:
What is contained in the nucleus of an atom?
a
Electrons and Protons
b
Protons and Neutrons
c
Protons only
d
Electrons only
Answer:
Protons and neutrons can be found in the nucleus of an atom.
Answer: C Protons only
Scientist of Georgia.
All of the biological macromolecules found in organisms contain hydrogen oxygen and carbon. However there are distinguishing features of each. Which of the following could be used to differentiate between a carbohydrate and a nucleic acid
Answer:
Carbohydrate molecules contain only carbon, hydrogen and oxygen atoms, whereas, nucleic acid molecules also have a nitrogen base and phosphate group.
I got this question correct
_ is the best source of protein for a vegetarian
Juanita used a ruler to measure the pencil below. She used two different units of measurements. Which of the options could be the two different units she used?
a. 12 centimeters and 120 meters
b. 120 millimeters and 12 centimeters
c. 120 centimeters and 12 meters
d. 12 millimeters and 120 centimeters
Answer:
It might be A but I'm not fully sure.
Explanation:
What is seed dispersal?
A. the creation of seeds from sperm and eggs
B. the growth of a new plant
C. the movement of a plant's offspring away from the parent plant
D. the transfer of pollen from one plant to another
Seed dispersal is the process by which seeds of a particular plant is conveyed through a medium to an entirely different location for germination. These mediums could be wind.....water etc
Question 2
Which of the following did the philosophers of ancient Greece not have evidence for?
O a.
The spherical shape of the Earth.
Ob.
The correlation between lunar phases and the cycle of oceanic tides.
c.
Retrograde motion of the planets as they moved across the sky.
The existence of exoplanets.
O d.
Answer:
c. Retrograde motion of the planets as they moved across the sky.
Explanation:
Ancient Greek philosophers were extremely intelligent people who propounded some ideas that have helped shape science to what it is today.
They had evidence for the spherical shape of the earth, the link between lunar phases and oceanic tides, and the existence of exoplanets, however, they did not have evidence for the retrograde motion of the planets as they moved across the sky because they believed that if the Earth moved around the Sun, then they would be able to see the stars from divergent points along Earth's orbit.
Which macromolecule forms a double layer as the primary structure of cell membranes?
O fats
O oils
O phospholipids
O steroids
Answer:
Phospholipids are the macromolecule which forms a double layer of cell membranes
Answer:
C
Explanation:
Compare mitotic and post-mitotic cells (define, give example of each).
Answer:
Mitosis is a process where a single cell divides into two identical daughter cell.
EXAMPLE ----- the way the skin cells covering a child's body all multiple when they are growing.
A mature terminally differentiated (TD) cell no longer able to undergo mitosis is defined as post mitotic cells.
EXAMPLE-------- mature neurons and mature multiple cells.
HOW IT HELPS......
Charles Darwin developed the theory of evolution. Around the same time, Alfred Wallace also developed a similar theory of evolution. Both scientists studied different organisms. Which best describes the experiments of Darwin and Wallace? Repeated trials or experiments resulted in a similar conclusion. Different independent approaches resulted in a similar conclusion. Multiple approaches took place across multiple disciplines. Repeated trials or experiments took place across multiple disciplines. PLEASE ANSWER ASAP
Answer:
It’s B
Explanation:
Answer:
B
Explanation:
What kind of display would be the best way to represent the data below? Type of species Critically endangered (%) Endangered or vulnerable (%) Plants 13 70 Invertebrates 0 35 Freshwater fish 9 37 Amphibians 7 30 Reptiles 5 28 Birds 0 12 Mammals 2 21 bar graph pie chart line graph scatter plot
Answer:
The table to this question is unclear, the detailed tabular form of this data has been attached.
The answer is BAR GRAPH
Explanation:
Bar graph or chart is one of the means statistical data is represented or displayed. A bar graph uses bars positioned horizontally or vertically to represent data. A bar chart is used to show comparison between the values of different categories. The length of each bar shows the degree of the measured data.
According to the data provided in the question, a comparison between the critically endangered species and endangered or vulnerable species in % of different types of species is described. Using a BAR GRAPH, the x-axis of the graph will contain the different types of species while the y-axis will contain the quantity in percentage (%) of the endangered or critically endangered species.
Note that, two different bars of different colors will be used to represent whether the species is endangered or critically endangered.
Answer:
Bar graph
Explanation:
Photolysis is a part of which cycle? a. phosphorus b. oxygen c. nitrogen d. carbon
Answer:
B on edge! Oct. 28 2020!
Explanation:
_____states that each rock layer isolder than the one above it.
Answer:
sup
Explanation:
sup
A pathway is given below showing the synthesis of Compound V from precursors I, II, III, and IV via the action of enzymes 1, 2, 3, and 4 (the same pathway as in question 1). You grow a mutant on several different minimal media preparations, and find that it can only grow on media that is supplemented with compounds IV or V. What compound will accumulate in this mutant?A. Compound IB. Compound IIC. Compound IIID. Compound IVE. Compound
Answer:
C. Compound III
Explanation:
A metabolic pathway can be defined as a series of linked (successive) chemical reactions that are produced within the cell. In an enzymatic reaction, the reactants, intermediates, and products are referred to as 'metabolites'. These enzymatic products generally act as substrates for the successive chemical reactions. The metabolic pathways can be classified into anabolic (require energy to synthesize molecules) and catabolic (release energy) pathways.
How did Louis Pasteur help disprove spontaneous generation?
Answer:
Louis Pasteur devised a way to flask that allowed oxygen in, but prevented dust from entering. The broth did not show signs of life until he broke off the neck of the flask allowing dust, and therefore microbes, to enter.
Explanation:
Hope that helps! UnU
PLEASE ANSWER URGENTLY!!
Whilst bushwalking, Brian begins to feel chafing sensation in his thighs. In order to perceive this chafing, neural impulses must travel in one direction – from his (skeletal muscle, skin, brain, spinal cord) to his (brain, skin, spinal cord, skeletal muscle) This information would travel via (GVE,GVA,GSA,GSE) neurones.
WHICH ONE OF THE OPTIONS IN THE BRACKET
Answer: Skin; Brain, GSA - General Somatic Afferent
Explanation:
Whilst bushwalking, Brian begins to feel chafing sensation in his thighs. In order to perceive this chafing, neural impulses must travel in one direction – from his skin to his brain. This information would travel via GSA neurones.
The peripheral mechanoreceptors which are found on the skin and used to detect movement will detect the chafing and send it to the brain.
This information will be received by the brain through General Somatic Afferent neurons which are spread across the body and have the primary function of detecting touch and temperature.
