Answer: A. Homologous structures occur in each fossil
Explanation: source: trust me broski
(Actually though trust me)
which of the following statements are true about purines and pyrimidines? A)purines have one-ringed base
B) Guanine is a pyrimidine
c) PURINES HAVE TWO-RINGED BASE
D) pyrimidines have a two-ringed base
E) Adenine is a purine
F) Thymine is a purine
G) Uracil is a pyrimidine
H) pyrimidine has a one-ringed base
Most genes contain instructions for making ____.
Answer:
Most genes contain the information needed to make functional molecules called proteins.
Diseña un procedimiento corto que te permita conocer qué tanto ayudan en la conservación de los ecosistemas las personas (máximo 4 pasos) Por favor ayuden me
From the stomach, food next moves into the ____, which has functions of digestion and absorption
Answer:
small intestine
Explanation:
Hope this helps :)
Answer:
From the stomach, food next moves into the small intestine which has functions of digestion and absorption.
What would happen if a mistake were not caught by the proofreading mechanism and became permanent in the DNA
If a mistake were not caught by the proofreading mechanism and became permanently incorporated into the DNA, the consequences could be catastrophic.
The DNA is the blueprint for all life, and any mutation or alteration can cause a range of problems, from minor to severe. If the mistake were to alter a gene that is important for cell survival, it could lead to a range of health problems, from mild to life-threatening.
For example, if a gene that is responsible for the production of a certain enzyme is altered, it can cause a metabolic disorder, leading to physical and mental disabilities. If the mistake were to alter a gene that is responsible for the functioning of a specific organ, such as the heart or brain, it could lead to serious health problems, such as heart defects or neurological disorders.
If the mistake were to alter a gene responsible for the development of an organism, it could lead to serious developmental defects or even death. For example, if a gene that provides instructions for the development of the body's organs is altered, it could lead to serious malformations or even death.
In addition to the health risks, a mistake in the DNA could also lead to changes in the species. For example, if a mutation alters a gene that is important for the survival of a species, it could lead to the extinction of the species. This could be due to a decrease in fertility, a decrease in the population size, or an inability to adapt to a changing environment.
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what am products are formed when glucose and oxygen are combined in cellular respiration
Answer: carbon dioxide , water and energy
HELP!!!!!! IM CONFUSED HELP ME!!!
Consider the following experiment. A plant is set in one corner of a box. A top is put on the box so that the hole in the top is opposite to the plant.
Over the next week, the plant in the box should:
grow downward
grow away from the hole
bend and grow towards the hole
die for lack of air
Answer:
It will bend and grow towards the hole because the sunlight will shine through the hole and the plant will sense it so it will grow towards the light. I hope I could help you :)
Explanation:
How do you release chronically tight muscles?
Chronically tight muscles can be release by Stretching ,Massage ,Foam Rolling and Strengthening.
Chronically tight muscles can be caused by over using muscle , poor posture , stress , anxiety and depression . This stiffness can commonly occurs after extensive exercise or lifting weights. this stiffness can also occurs after periods of inactivity, like prolonged sitting and sleeping for long hours in the bed.
In general , Muscle pain can effect almost every part of your body, which may include your neck, back, legs and even your hands. These pain can be relived by various medication that includes relaxant and ointments that soothes the pain .
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In your own words, what is the definition for Cytoskeleton?
Answer: cytoskelton is a microscopic network of protein filaments
Explanation:
Answer:The cytoskeleton is a dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including bacteria and archaea. It extends from the cell nucleus to the cell membrane and is composed of similar proteins in the various organisms.
Explanation: this is one of my spelling words!
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What 4 characteristics do all mollusks share?
Four common characteristics that all mollusks share , are having soft bodies, a mantle, a visceral mass, and the foot.
The phylum Mollusca has many distinctive features and special characteristics, which include a mantle cavity, visceral mass, foot, and radula. Mantle is the cavity which is used for breathing and excretion purpose , radula is longue like structure that helps in sensory and food grasping purpose. Mollusks also includes various classes like Gastropod, Bivalvia, Cephalopoda, and Polyplacophora .
Gastropods have a special characteristics that includes spirally-coiled external shell while others mollusks usually have a flattened shell, and many of them doesn't possess any shell as outer structure.
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State two variables that need to be controlled in this investigation.
Answer:
the Variable that need to be controlled in this investigation is :
1. Temperature: Temperature affects the rate of the reaction and must be kept constant throughout the experiment to ensure accuracy.
2. Concentration: The concentration of the reactants must be kept constant in order to ensure that the reaction rates are being accurately measured
If the cell's external environment becomes very WATERY (dilute) then the outside of the cell will have a higher water concentration. We say the cell environment is HYPOTONIC. Water will diffuse in this case.
Which way is the water going to diffuse?
The cell's exterior cell will contain higher water percentage if the external environment of the cell becomes particularly watery (dilute). The cell milieu is referred to as hypotonic. In this situation, water will diffuse.
A hypotonic solution is what is it?Any external solution with a low solute content and a high water concentration in comparison to body fluids is referred to as a hypotonic therapeutic solution. There is a net transfer of water first from solution through into body in hypotonic solutions.
Has hypotonic water gained?When a cell is in a concentrated solution, water goes out of the cytoplasm when both solutions equal isotonic because the workaround has a greater moisture content than the cell cytosol. When cells are submerged in a hypotonic solution, their surfaces will absorb water.
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One similarity and one difference between hydrolysis and carbonation.
One similarity between hydrolysis and carbonation is that they are both chemical reactions that involve the addition of water to a compound.
One difference between hydrolysis and carbonation is that hydrolysis involves the breakdown of a compound into smaller molecules through the addition of a water molecule, whereas carbonation involves the addition of carbon dioxide to a compound. Hydrolysis is a chemical reaction that occurs when a compound reacts with water, whereas carbonation is a chemical reaction that occurs when a compound reacts with carbon dioxide.
que son los nutrientes
Answer:
son las sustancias quimicas que contienen los alimentos que consumimos de los cuales obtenemos energia necesaria para realizar todo tipo de funcion vital y tener una vida sana
Explain how the tructure of a cell allow localization of reaction, protection from reactive molecule, and greater efficiency of cellular procee than a bacterial cell
A eukaryotic cell's structure allows for the localization of reactions because there are areas within the cell where particular enzymes colocalize.
Structural barriers are also used to protect against reactive molecules, and the division of work in this cell allows for greater efficiency of cellular processes than in a bacterial cell. In a eukaryotic cell, the phrase "subdivision of work" refers to the existence of several cell compartments, such as those connected to certain organelles that offer an appropriate medium for carrying out specific reactions, such as the presence of hydrolytic enzymes in lysosomes. As a result, according to the findings, division of labour is essential for eukaryotic cells to carry out various activities, which translates to greater metabolic efficiency when compared to bacteria.
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Buffalo grass is a species of plant found on the grazing prairie of Wyoming. It is a tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves. This variation has allowed this type of grass to survive for many years in an adverse environment. This is an example of which mechanism of evolution? O Mutation O Natural Selection O Gene Flow Genetic Drift
As the variation of tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves has allowed this type of grass to survive for many years in an adverse environment, this is an example of b. natural selection.
This particular type of grass has adapted over time to survive in an adverse environment, due to its silicates (compounds containing oxygen and silicon) reinforcing its leaves. This is an example of natural selection, showing how the grass has been able to survive for many years despite the difficult conditions.
The variety of grass characterized by silicates (oxygen and silicon compounds) in its leaves has enabled it to survive in difficult environments over the years. This is a prime example of natural selection at work.
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Different versions of a gene, like brown or white fur color, are called what?
Answer:
is a multiple alleles
Explanation:
what can be caused by rainfall on non porous ground
Explanation:
Rainfall and surface runoff
Rainfall, and the surface runoff which may result from rainfall, produces four main types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.
Plant reproduction requires the presence of auxins, as well as a large amount of sugar for energy. Which two main
plant tissues work together to release sugar and carry hormones so that reproduction can take place?
leaves and dermal
stems and ground
dermal and vascular
C ground and vascular
The two main plant tissues which work together to release sugar and carry hormones so that reproduction can take place are ground and vascular.
What is a vascular tissue?In plants, vascular tissues are tissues that act to transport nutrients to different parts of the plant.
In higher plants, vascular tissues include the plant phloem and the plant xylem.
In conclusion, the two main plant tissues which work together to release sugar and carry hormones so that reproduction can take place are ground and vascular.
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Meiosis produces our sex cells or gametes. (eggs in females and sperm in males).
O true
O false
Answer:
True
Explanation:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.
True. Meiosis produces our sex cells or gametes.
What is meiosis?Meiosis is a type of cell division that occurs in sexually reproducing organisms to produce haploid gametes (sperm and eggs) with half the number of chromosomes as the parent cell. It involves two successive cell divisions, known as meiosis I and meiosis II, each of which consists of a series of stages, including prophase, metaphase, anaphase, and telophase.
During meiosis I, homologous chromosomes pair up and exchange genetic information in a process called crossing-over, which increases genetic diversity. The paired homologous chromosomes then separate and move to opposite poles of the cell, resulting in two daughter cells that have half the number of chromosomes as the parent cell.
In meiosis II, the sister chromatids of each chromosome separate, resulting in four haploid daughter cells with unique combinations of genetic information.
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This Roman snail, this cuttlefish, and this mussel have similarities and differences in their body structures. What does the information about these structures tell you about the ancestors of these species?
Answer:
The answer is C
Explanation:
Because they all have the same design, they will all be the same.
Can someone tell me what I should highlight for question number 1?
Answer:
can you send a better picture
Explanation:
its kind of blurry
9.-13. Match the description to its anatomical term.
-
A membranous, serous layer attached
to a fibrous sac
A tissue composed of layers and bundles
of cardiac muscles
Outside layer of the heart wall that's
interspersed with adipose
The interior lining of the heart
External grooves that indicate the regions
of the heart
a. Visceral pericardium
b. Sulci
c. Endocardium
d. Myocardium
e. Parietal pericardium
The regions of the heart: Visceral pericardium, c. Endocardium, d. Myocardium, e. Parietal pericardium.
What is Visceral pericardium?The visceral pericardium, sometimes referred to as the epicardium, is the innermost layer of the pericardium, a sac that encloses the heart and its major vessels. It is composed of a thin mesothelial membrane which is continuous with the outer layer, the parietal pericardium. The visceral pericardium is firmly attached to the heart and the great vessels, and its surface is covered with a thin layer of serous fluid that acts as a lubricant and helps reduce friction between the heart and the outer layers of the pericardium.
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Drag the tiles to the correct boxes to complete the pairs. Match the medications with their effects. suppresses or blocks the cough reflex stimulates vasoconstriction of blood vessels relaxes and dilates the bronchial muscles Bronchodilator arrowRight Antitussive arrowRight Decongestant arrowRight
Explanation:
Can you reformulate the question? There's no one can understand that....no punctuation marks,no nothing
Answer:
bronchodilators - relaxes and dilates the bronchial muscles
antitussive - supresses the cough refex
decongestant - stimulates vasoconstriction of blood vessels
Explanation:
PLATO
Describe the Calvin cycle in 3 sentences
Answer:
><fontcolor="blue">OPTIMUSPRIME</font
The Calvin cycle is the cycle of chemical reactions performed by plants to “fix” carbon from CO2 into three-carbon sugars. Instead, the Calvin cycle is powered by ATP and NADPH, which are created by harnessing the energy from photons in the light-dependent reactions. ...
What is a deletion mutation?
In deletion DNA sequence changed by removing at least one nucleotide in a gene.
Deletion mutation generally takes place when part of a DNA molecule is not copied during DNA replication. Thus the uncopied part remains as small as a single nucleotide or as an entire chromosome.
In general ,Deletion mutations can be responsible for causing large number of genetic diseases, that includes disease like cystic fibrosis and the cat cry syndrome, that makes child cry with the cat sound or cat meowing . Hence, deletion mutation can occurs when a piece of DNA is removed from the sequence.
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What is a substitution deletion and insertion point mutation?
Insertion mutation occurs when an extra base pair is added to a sequence of bases.
In general, a Point mutation refers to alteration in a single base pair of DNA by substitution, deletion, or insertion of a single nitrogenous base. Most common example of point mutation is sickle cell anemia. that consists of mutation in a single base pair in the beta-globin chain of hemoglobin pigment in the blood cells. Thus, An insertion can involve the addition of any number of nucleotides, that can be a single nucleotide or an entire piece of a chromosome.
An insertion is a point mutation in which one or more base pairs is added to a DNA sequence. Point mutations is further divided into silent mutations, missense mutations, and nonsense mutations.
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Which of the following is NOT an advantage of asexual reproduction?
greater genetic variation
requires little energy
less opportunity for mutation
rapid reproduction
the damage of which part of the brain causes sudden death?
It takes powerful forces to crack the human skull and threaten its precious cargo, the brain. But death can come instantly when strong forces threaten a main nerve thoroughfare called the brain stem.
Did those who were successful in Round One survive equally well when others were competing for food at the same dish during Round Two
No, those who were successful in Round One will not be successful in Round Two since there will be increased competition.
In the pursuit of a single, unshareable aim, competition is a contest between two or more parties in which one side gains an advantage over the other (an example of which is a zero-sum game). Humans, social and economic organisations, and living things are all competing entities. It provides people a variety of employers and working settings while also creating jobs.
Additionally, competition lessens the need for government intervention through business regulation. Consumers, society, and individual liberty all benefit from a healthy, competitive free market. Studies show that competition can promote focus, effort, and learning. A student may be motivated to work significantly harder on their homework by the social pressure of competing with other students.
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