Answer: The correct answer is B. extinction of the dinosaurs
Explanation: Confirmed correct.
Answer:
The correct answer is B. Extinction of the Dinosaurs
I rlly hope I helped :)
A parent cell from a human starts with 23 pairs of chromosomes; how many pairs of chromosomes will be in each new cell following cytokinesis?
Answer:
46 I belive! hope this helps
23 pairs of chromosomes, or 46 chromosomes will be present in the new cells formed after cytokinesis.
The DNA is duplicated during interphase. Consequently, one chromosome is present in two copies.
This indicates that the parent cell now contains 46 pairs of chromosomes.
However, the cell divides into two during cytokinesis, leaving each daughter cell with 46 chromosomes or 23 pairs of chromosomes.
What is Cytokinesis?A single eukaryotic split into two daughter cells during the cell division process known as cytokinesis. After the latter phases of mitosis and meiosis' nuclear division, the process of cytoplasmic division starts. As the daughter cells separate during cytokinesis, the spindle apparatus divides and carries duplicated chromatids into the cytoplasm. Thus, it guarantees that the chromosomal number and complement are preserved from one generation to the next and that, barring exceptional circumstances, the daughter cells will be functional duplicates of the parent cell. Each daughter cell starts the cell cycle's interphase after telophase and cytokinesis are finished.To learn more about Cytokinesis, refer to:
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Whick of the following is the best tittle for this passage ?
The life of a blind person is the best title for this passage.
The text describes a blind person's life. It says nothing about the person's desire to see the world or their dread of going blind. There are no issues related to the doctors in the text, hence it cannot be a biography because it does not go into detail about Mary's life history.
Aside from navigation, blind persons can carry out nearly all of the daily tasks performed by sighted people. They are independent and capable of cooking and doing makeup. With the use of accessible products or technologies and their own willpower, blind people can live independent lives.
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Which of the following characteristics is true of members of the plant kingdom?cell walls made up of cellulosechloroplasts in some of the cellsalternation of generations in life cycleall of these choices are correct
Plants are sessile organisms that can make their own food. Their cells have cell wall that is composed of cellulose and chloroplast that is the main site of photosynthesis. It is also unique to plants the alternation of generations in their life cycle that means it has sporophyte stage and gametophyte stage.
ANSWER: All of these choices are correct.
How could CRISPR help treat genetic diseases like DMD or hemophilia?
CRISPR shut off a deteriorated gene that generate cells of the liver to agitate out transthyretin formed on nerves and heart which brings pain, numbness, and diseases of the heart. CRISPR can be utilized to rehabilitate enduringly the deteriorated DMD gene. A way was formed that can cure individuals with hemophilia possessing mutations of DNA. Hemophilia can only be cured by gene theraphy.
Science is the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process. Lizards with the longest legs are able to climb in order to reach high sources of food and escape the ground when floods or storms occur. Weather conditions for seven years are shown below.How might natural selection act on the lizard population if this pattern continues over time?
Solution:
Note that according to the table, the rainfall increased each year, which will endanger organisms that are above ground and cannot climb. Now, because the longer-legged lizards can climb to reach high food sources and escape from the ground when floods or storms occur, then these members of the population have better characteristics, depending on the environment they are adapted to (lots of rain ). Therefore, according to natural selection, these lizards will probably have a higher survival rate and therefore will be more likely to prevail and their genes to be inherited from generation to generation.
Summarize how energy changes during a chemical reaction as bonds are broken and formed.
When a reaction occurs, bonds in the reactants break and new bonds in the products form. These changes involve energy. When bonds break, energy is absorbed and when new bonds form, energy is released. The bond energy is a measure of bond strength in a chemical bond.
Earth has major land biomes.
Yes earth has major earth biomes.
What is earth biomes?
biomes . A biomes is an area classified according to the species that live in that location. Temperature range, soil type and the amount of light and water and are unique to a particular of the place and form the niches are for the specific species allowing scientists to define the biomes .
There are five major types of biomes aquatic, grassland, forest, desert, and tundra, though some of these are biomes can be further the divided into more specific categories, such are the e.g like - freshwater, marine, savanna, tropical rainforest, temperate rainforest, and the taiga. Aquatic biomes and include both freshwater and marine biomes.
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Question: Are there any cells we can see with our unaided eyes? Write a Claim: Evidence:Reasoning:
There are many cells we can see with our unaided eyes in the ovum.
The human eye can see objects as small as 100 microns. Objects below 100 microns cannot be seen with the eye. Cells in our bodies are 10 microns in size and cannot be seen with the eye. Eggs, like single cells, can be seen without a microscope. In all mammals, the egg is the only cell visible to the human eye.
Cells are so small that they are usually invisible to the eye. As we age, the vitreous jelly-like substance in the eye liquefies and shrinks. When this happens, the microscopic collagen fibers within the vitreous tend to clump together. This scattered debris cast small shadows on the retina. The smallest object visible to the human eye is approximately 0.1 mm in length.
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4. A student wants to know if girls have faster reaction times to visual stimuli than boys. Which of the following variables should be the same in all tests
OA The gender of the person taking the test.
OB. The color of the object used in the test.
OC. Both A and B should be the same
OD Neither A nor B should be the same
The color of the object used in the test variables should be the same in all tests.
The correct option is B.
Do you test multiple variables?To ascertain the impact of a modification to one variable, an A/B test must test at least one variable. In a multivariate test, many combinations of factors are tried to see which one is most effective in advancing the end objective.
What is an example of a test variable?It is a factor on which other factors rely. One example of a dependent variable is a test score, which can change depending on a number of factors, such as how much you prepared, how much sleep you got the evening before the test, and even how hungry you were.
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4. A student wants to know if girls have faster reaction times to visual stimuli than boys. Which of the following variables should be the same in all tests
O A The gender of the person taking the test.
● B. The color of the object used in the test.
O C. Both A and B should be the same
O D Neither A nor B should be the same
________________________________
The correct answer is Letter [tex] \large \bold{B}[/tex]
how are Karyotypes, amniocentesis, and the detection of some genetic diseases used in the medical field?
Answer:
Karyotyping is a test to examine chromosomes in a sample of cells. This test can help identify genetic problems as the cause of a disorder or disease.
Amniocentesis is a prenatal test that can diagnose genetic disorders (such as Down syndrome and spina bifida) and other health issues in a fetus.
Genetic testing is useful in many areas of medicine and can change the medical care you or your family member receives. Genetic testing provides a diagnosis for a genetic condition such as Fragile X or information about your risk to develop cancer.
Explanation:
I hope this helps if not sorry~
Which of the following is a health effect of air pollution?
A. cholera
B. lung damage
C. roseola
D. influenza
Answer:
it has to be lung damage trust ne
is RNA that copies the coded message from the DNA inthe nucleus and carries the message into the cytoplam
The messenger RNA (mRNA) is the one responsible for copying the coded message from the DNA present in the nucleus and move it to the cyto
2. A student conducts several tests of reaction time, resulting in the histogram below. What can be inferred from the histogram?
OA. The sight data has a greater mean and a larger standard deviation than the sound data.
OB. The sight data has a greater mean and a smaller standard deviation than the sound data.
OC. The sight data has a lower mean and a larger standard deviation than the sound data.
O D. The sight data has a lower mean and a smaller standard deviation than the sound data.
The sight data has a greater mean and a smaller standard deviation than the sound data.
The correct option is B.
What is histogram?The histogram is one often used graphing tool. It is used to display summaries of either discrete or continuous data that have been intermission. It is widely applied to easily represent the key features of the distribution of data.
What diagram has a histogram in it?A graph called a histogram uses squares to show how frequently numerical data occurs. The width of a rectangle (the vertical axis) indicates the distribution frequency of the a variable (the amount, or how often that variable appears).
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Which element can form multiple strong bonds with other atoms and makes
up the backbone of most biomolecules?
A. Carbon
B. Oxygen
C. Nitrogen
D. Hydrogen
Answer:
A. Carbon
Explanation:
Because all macromolecules consist of carbon. For example CHO for carbon, hydrogen, and oxygen. CHONP for the macromolecule Nucleic Acids which is also considered DNA consists of carbon. hydrogen. oxygen, nitrogen, and prosperous.
I hope this helped!!
Standard NCES.7.L.2.1-In which process do animals make reproductive cells?
Group of answer choices
meiosis
homeostasis
protein synthesis
cellular respiration
Answer:
cellular respiration because when we give birth our reproduction cells reart
For her school Science Fair, Alyssa designs an experiment to learn more about erosion. Her experimental set up is shown below.
The height of the tray is a change that may cause and affect the experiment.
An independent variable is a variable operated by scientists. In order to ensure fair tests there is only one independent variable in excellent experiments. When scientists change independent variables they record the collected data. No experimental registration group.
It is difficult to determine the effect of independent variables on the subordinate variables. This is because there is always an external factor that affects the behavior of the experimental group. Substantial variables are variables measured or tested in experiments. In a study that examines how individual guidance affects the score of the test, the subordinate variable is the score of the participant's test. This is because it is the measurement target.
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In active transport, molecules move from an area of low concentration to high concentration, against their concentration gradient.A) YesB) No
In active transport, molecules move from an area of low concentration to another with higher concentration, so they go against the concentration gradient, which means that energy is required to realize this movement.
This means the right answer is A) Yes.
what statement forms part of the cell theory
The statement that forms part of the cell theory is "All cells are produced from other cells". The correct answer is option B.
What is cell theory?
The cell theory forms useful principles of biology today. This theory has helped to shape knowledge on how organisms are formed.
The theory described how cells are the building blocks of life. For instance, cells are present in all parts of the human body.
Statements that form parts of the cell theory include:
New cells are created from cells that were existing.Cells are the basic building block in all living things.Living organisms can be unicellular (having one cell) to multicellular (having two or more cells).Cell became possible to be studied with improvement of the microscope and microscopic techniques.
Other cell theory through modern study include:
Energy flow occurs within cells.DNA is passed on from cell to another target cell.All cells have the same chemical composition.In summary, All living things are able to live, grow and reproduce due to the existence of cell.
The complete part of the question is:
What statement forms part of the cell theory?
a. Only plants are composed of plant cells.
b. All cells are produced from other cells.
c. Cells can be produced from nonliving matter.
d. Only animal cells have cell walls.
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A cold biome with cold winters and short, mild summers is aOtropical grasslandO temperate grasslandconiferous forestO chaparral
A cold biome with cold winters and short, mild summers is a coniferous forest.
Name ONE Australian plant and ONE viral or fungal pathogen that invades this plant.
Describe how the plant named responds to the pathogen
Answer:
Common Name: Potato Plant; Scientific Name: Ipomoea costata
Fungal Pathogen: Phytophthora Infestans
Explanation:
Late Blight (or Potato Blight).
The specific response of potato plant is that their pattern recognition receptors can recognize beta-glucans that is present on the phytophthora infestans’ cell wall.
Many mRNA strands in Eukaryotes will undergo post-transcription modifications (mRNA processing). Which parts of the mRNA strand will code for the final amino
acid sequence?
A Okazaki Fragments
B Exons
C Cap and Tail
D Introns
Correct answer is option B.
Exons are what remain in mature mRNA and ultimately code for amino acids.
What is Exon strand in mRNA?Exons are protein-coding sections of an RNA transcript or the DNA that encodes it. Exons can be separated by introns, which are sections of DNA that do not code for proteins.Exons are gene segments that code for proteins. To create a final product, they are transcribed and translated.Exons are nucleic acid coding sequences that are found in mRNA. Introns are non-coding sequences found in DNA that are removed by RNA splicing prior to translation. Intron sequences change rapidly over time, whereas exon sequences are highly conserved.Each gene has an average of 8.8 exons and 7.8 introns. Approximately 80% of the exons on each chromosome are 200 bp long.
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Which of the following correctly describes the development of Earth's atmosphere?
A Hydrogen and nitrogen gas, oxygen formed, hydrosphere forms, ozone layer formed
B Hydrogen and helium gas, hydrosphere forms, oxygen formed, ozone layer forms
C Hydrogen and helium gas, hydrosphere forms, ozone layer forms, oxygen formed
D Hydrosphere forms, oxygen formed, ozone layer forms, hydrogen and helium gas
The answer is A because oxygen Hydrogen and Nitrogen are what are in the atmosphere
This is physical science
Pressure and Pascal's Problems
1. A bronze statue weighs 2400 N. It's base is about 2m². What is the pressure the statue
exerts on the floor?
(P=FA P = F A) Pressure is equal to force divided by area. The equation demonstrates that whereas area and pressure are inversely related, respectively, to force. Pressure grows at a constant area as the size of the force exerted grows as well.
Pressure (p=F/A) is the force applied divided by the area perpendicular to the plane on which it is applied.
Explanation:
Force x Area= Equals Pressure
P = 2400 / 2
P = 1200 Nm^-2
Answer:
1200 pa
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What is the difference between basidium and paraphrase?
Basidium is a microscopic sporangium found in the ascospore of the fruiting body of Basidiomycetes, also known as the tertiary mycelium, which developed from the secondary mycelium. The tertiary mycelium is the highly coiled secondary mycelium.
The presence of a basidiomycete is one of the most important features of basidiomycetes. Basidium usually has four called basidiospores but can have two or eight. In typical basidia, each basidiospore is born at the tip of a thin prong or horn called a sterigma and is forced out upon maturity.
The basidium genius serves as the site of nuclear fusion and meiosis the function at which gametes fuse exchange nuclear material, and divide to reproduce basidiospores. The fungi of the phylum Basidiomycota are easily recognized under the light microscope by the swollen end cells of the hyphae, club-shaped fruiting bodies called singular. Basidium-producing structures are formed by the fusion of two vegetative/somatic cells of different lineages or genotypes.
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Approximately 30 - 32 molecules of ATP are produced from the complete oxidation of one molecule ofglucose (C6H12O6) in aerobic cellular respiration. Explain reasons why the number of ATP is not knownexactly
One glucose molecule produces 4 ATP, 2 NADH, and 2 pyruvate molecules during glycolysis. Although 4 ATP molecules are produces in the second half, the net gain of glycosis is only 2 ATP because 2 ATP molecules are used in the first half of glycolysis. If the cell cannot catabolize the pyruvate molecules further via the citric acid cycle, it will harvest only 2 ATP molecules from one molecule of glucose.
Glycolysis is the sole source of ATP. If glycolysis is disrupted, the RBC fail their ability to control their Na-K pumps that need ATP to function, and eventually, they die. If the second half of glycolysis slows or stops in the absence of NAD+ or when NAD+ is unavailable, RBC will not produce a sufficient number of ATP in order to survive.
The number of ATP has been estimated between 35 to 30. The total number of ATP is not known exactly due to variance in the degree of coupling between the flow of protons through the ATPase and electron transport ATP which is the energy currency of the cell.
A football player kicks a ball with a mass of 0.42 kg. The average acceleration of the football was 14.8 m/s².
How much force did the kicker supply to the football?
The kicker supply to the football is 6.22 N.
Solution:
F = m*a - A
F = Force = ?
m = mass = 0.42 kg
a = acceleration = 14.8 m/[tex]s^{2}[/tex]
Plug the values in equation A:
F = 0.42 * 14.8
F = 6.216 N
F = 6.22N.
An NFL kicker's foot average force during a kick is about 450 pounds 2002 N and the ball can even deform on contact so kicking is a large power imbalance. A soccer ball is kicked with the power of the leg muscles. Therefore, the forces exerted are muscle forces. Strength is the force produced by using a body part such as an arm or leg. Since there is contact between surfaces, it is the contact force created by muscle activity. This phenomenon is commonly seen in soccer games when a player tries to catch a ball that has been thrown into the air.
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Plant cells, unlike human cells, have rigid "cell walls" that contain the rest of the cell components. What are cell walls analogous to in the human body?
membranes
cytoplasm
blastiopores
mitochondria
• What are some different forms of potential energy?
Answer:
chemical, elastic, electrical (electromagnetic), gravitational, nuclear, and thermal energy.
Explanation:
I added a picture of my question :) also thank you so much for being able to help me I really appreciate it.
Molecules (DNA) < Organelles (Mitochondria) < Cells (nerve cell) < Tissues (nervous tissue) < Organs (Brain) < Organ systems (Nervous system)
What is the correct order for the levels of organization in living systems from the simplest to the most complex? (Note that not all levels of organization are included.) A elements → molecules → cells → tissues → organs B molecules → tissues → cells → organs → organisms C molecules → elements → tissues → organs → organisms D cells → organs → tissues → organisms → molecules
The major levels of organization of body, from the simplest to the most complex are atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
Many individual organisms can be organized into the following levels are cells, tissues, organs, organs systems, and organisms. There are also levels of organization above the individual organism population, community, ecosystem, biome and biosphere.
Understanding the classification of these levels, provides context to the complexity of the human organism. The simplest level of organization is the chemical level of organization. At this level, simple atoms combine to form relatively simple molecules.
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