Answer:
Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.
Explanation:
PLEASE HURRY NEED ANSWER ASAP!!!!
DNA is a nucleic acid polymer composed of which repeating structural unit? nucleotides phosphate groups ribosomes proteins
Answer:Nucleotides
Explanation:
I know about this stuff :)
Answer:nucleotides
Explanation:
USE PICTURE ABOVE!! NEED ANSWERS ASAP!!! 8. Categorize What types of bonds are present in
this molecule?
9. Analyze What elements are present in this
molecule?
10. Solve What is the chemical formula of this
organic compound?
Answer:
a) Benzoic acid
b) Resonance bond
[tex]c) \: C\frac{}{6} H \frac{}{5} COOH[/tex]
How many “official” constellations are there?
Answer:
"88" seems to be the appropriate response.
Explanation:
There would have been 88 internationally approved constellations throughout all, who together encompass or represent the whole atmosphere or universe. And therefore any particular statement throughout the planets and stars reference frame may be the integrative model to the constellation or series.How has dna technology led to advancements in forensics medicine and agriculture?
Answer:
DNA technology is very beneficial in the criminal and civil justice system, methods such as fingerprinting are used very often when trying to find a person behind a crime. This technology has also improved our use of medicine. One way is breeding plants to create more options of curing diseases by using adding nutrients and minerals. Lastly, DNA is used to grow crops that have a lot more nutrients and minerals that are added from other plants.
Explanation:
Characterization, or ''typing," of deoxyribonucleic acid (DNA) for purposes of criminal investigation can be thought of as an extension of the forensic typing of blood that has been common for more than 50 years; it is actually an extension from the typing of proteins that are coded for by DNA to the typing of DNA itself. Genetically determined variation in proteins is the basis of blood groups, tissue types, and serum protein types. Developments in molecular genetics have made it possible to study the person-to-person differences in parts of DNA that are not involved in coding for proteins, and it is primarily these differences that are used in forensic applications of DNA typing to personal identification. DNA typing can be a powerful adjunct to forensic science. The method was first used in casework in 1985 in the United Kingdom and first used in the United States by commercial laboratories in late 1986 and by the Federal Bureau of Investigation (FBI) in 1988.
DNA typing has great potential benefits for criminal and civil justice; however, because of the possibilities for its misuse or abuse, important questions have been raised about reliability, validity, and confidentiality. By the summer of 1989, the scientific, legal, and forensic communities were calling for an examination of the issues by the National Research Council of the National Academy of Sciences. As a response, the Committee on DNA Technology in Forensic Science was formed; its first meeting was held in January 1990. The committee was to address the general applicability and appropriateness of the use of DNA technology in forensic science, the need to develop standards for data collection and analysis, aspects of the
technology, management of DNA typing data, and legal, societal, and ethical issues surrounding DNA typing. The techniques of DNA typing are fruits of the revolution in molecular biology that is yielding an explosion of information about human genetics. The highly personal and sensitive information that can be generated by DNA typing requires strict confidentiality and careful attention to the security of data.
Blood vessels are muscular tubes that carry blood, sugar, and oxygen to the parts of the body. Nervous impulses cause these tubes to expand or contract. Which system do the vessels belong to?
Group of answer choices
circulatory
nervous
digestive
muscular
Answer:
blood vessel belongs to circulatory system
Which statement differentiates sensory neurons and motor neurons?
Options related to this question:
sensory neurons are found in the brain; motor neurons are found in the spinal column.
sensory neurons carry stimuli information to the brain; motor neurons carry processed information to muscles and glands.
sensory neurons process the information from the sensory organs; motor neurons process the information from the motor parts of the body, such as muscles.
sensory neurons involve involuntary actions; motor neurons involve voluntary actions.
Answer:
The correct answer would be - Sensory neurons carry stimuli information to the brain; motor neurons carry processed information to muscles and glands.
Explanation:
There are two basic types of neurons that help in performing action according to the external condition; the sensory neurons and the motor neurons. Neurons perform the action of sending or transmitting the information in the form of nerve impulses
The signals carried from the external environment through peripheral parts of the body to the CNS for processing the signals and motor neurons transmit the signals from CNS to the various peripheral body parts.
Answer:
1. Which structure would be unaffected by the peripheral nervous system?
meninges
sense organs
muscles
glands
2. The sympathetic and parasympathetic nervous systems are both a part of which division of the nervous system?
central nervous system
voluntary motor system
somatic nervous system ( its not this one)
autonomic nervous system
3. Which statement best exemplifies the scientific principle that was involved in this case?
New experiments do not affect science because science remains constant.
New experiments can affect future scientific explanations.
New experiments can affect previous scientific explanations.
New experiments yield untrustworthy data and should be carefully considered.
4. Which is an example of how the peripheral nervous system helps the body maintain homeostasis?
Muscles produce keratin so that hair can grow stronger.
Sweat glands break down the food that is consumed.
Muscles contract rapidly to produce heat on a cold day.
The brain recalls information to help take a test.
5. What is the role of sensory neurons in the breakdown of food?
Sensory neurons digest carbohydrates in the digestive tract.
Sensory neurons cause chewing of food in the mouth.
Sensory neurons release hormones so that the brain can cause the food to be moved and digested in the digestive tract.
Sensory neurons sense the presence of food and relay the information to the brain so that food can be moved and digested in the digestive tract.
6. Which statement explains the difference between a nerve that is connected to the skin and a nerve that is connected to a muscle?
1.The nerve that is connected to skin is a motor neuron; the nerve that is connected to a muscle is a sensory neuron.
2.The nerve that is connected to skin receives stimuli information from the external environment; the nerve that is connected to a muscle receives processed stimuli information from the brain.
3.The nerve that is connected to skin is part of the central nervous system; the nerve that is connected to a muscle is part of the peripheral nervous system.
4.The nerve that is connected to skin helps the body maintain homeostasis; the nerve that is connected to a muscle supports the body so it can stand upright and move from place to place.
7. How would an injury that incapacitated the central nervous system affect the peripheral nervous system?
The peripheral nervous system would be prevented from sending information from stimuli receivers.
The peripheral nervous system would not be able to process the information that it received from the stimuli receivers.
The peripheral nervous system would block information from the central nervous system.
The peripheral nervous system would have no information to send to the muscles and glands.
8. How does a motor neuron work when a mosquito is seen on an arm?
It receives stimuli information from the skin and sends it to the brain where it is processed.
It receives processed information from the brain, causing the muscles of the arm and hands to remove the mosquito from the arm.
It processes information from the stimuli receiver and makes the brain aware that there is a mosquito on the arm.
It makes the arm numb from the effect of the mosquito bite.
9. Which best describes the parasympathetic nervous system?
the brain and spinal cord
rest and digest
fight or flight
the sensory and motor neurons
10. Which statement differentiates sensory neurons and motor neurons?
Sensory neurons are found in the brain; motor neurons are found in the spinal column.
Sensory neurons carry stimuli information to the brain; motor neurons carry processed information to muscles and glands.
Sensory neurons process the information from the sensory organs; motor neurons process the information from the motor parts of the body, such as muscles.
Sensory neurons produce involuntary responses; motor neurons produce voluntary responses.
Explanation:
Which describes a way that carbon is pulled out of the atmosphere. when fossil fuels are used when trees use photosynthesis when I was burned when animals exhale
Answer:
Carbon is pulled out of the atmosphere when trees use photosynthesis
Your answer is B.
A unique strain of grape variety is called what
Strain
Clone
Variety
Hybrid
Answer:
?
Explanation:
?
What types of cells do fibroblasts make?
The source of power in a nucler power plant comes from
Answer:
the splitting of uranium atoms
Explanation:
During fission, two new, lighter nuclei are formed and fission energy is released, which is up to 20 times higher than the energy released in alpha, beta, and gamma decay (compared to chemical reactions, fission energy is a million times higher).
By breaking the nucleus of the atom, a huge amount of heat is released.
what does the phrase " naked seeds" mean in reference to gymnosperms?
A.) They produce pollen
B.) They don't have cones
C.) They produce flowers
D.) They don't have fruit
Answer:
D. they don't have fruit
Explanation:
Where does all the energy
originally come from for living
things?
Answer:
For species and the ecosystems of which they are a member, the Sun is the major energy source. By combining carbon dioxide and water to form organic matter, farmers, such as plants and algae, use energy from sunlight to generate food energy.
Explanation:
why are brayophytes called amphibians
ctto:mosesesiekpe07
hop it helps
What is the function of the chloroplasts?
Answer:
I think I iver explained it but here
Explanation:
Chloroplasts are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells.
A chloroplast is an organelle inside the cells of plants and certain green growth that is the site of photosynthesis.
Functions of chloroplast:Chloroplasts permit plants to catch the energy of the Sun in energy-rich atoms. The cell dividers permit plants to have unbending designs as fluctuated as wood trunks and flexible leaves, and vacuoles permit plant cells to change size.
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Explain how scientists use geologic time to determine the age of landforms. (3 points)
Answer:
I will!
Explanation:
to determine the related age of different rocks geologists start with the assumption that unless something has happened in the sequence of sedimentary rock layers the newer Rock layers will be on top of the older ones this is called the rule of superposition with absolute age dating you get a real age and actual years
Answer:
Geologic time uses the layers of rock to describe the relationships of events and their sequence in chronological order over the history of Earth. The layering is a result of the buildup of tiny bits of rock, sediment, or lava cooling at the surface over many years. Think of it like a stack of pancakes—the bottom layer is the one that was placed first and therefore is the oldest. The sediments that create the layers of Earth are stacked one on top of the other.
What is the main difference between prokaryotes and eukaryotes?
Answer:
Eukaryotes tend to have a distinct nucleus containing it's genetic information, while prokaryotes don't have a nucleus and its genetic material is free-floating
Explanation:
Yes
why do vertebrates come from under chordates ?
Answer:
As chordates, vertebrates have the same common features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post tail. Vertebrates are further differentiated from chordates by their vertebral column, which forms when their notochord develops into the column of bony vertebrae separated by discs.
A genetic mutation that causes abnormal cells to rapidly reproduce and divide often leads to
Answer:
Cancer
Explanation:
It might be said that a genetic mutation that causes abnormal cells that reproduce and divide rapidly, might lead to a cancer. this is associated with an uncontrolled cell growth in a multicellular organism.
(This is an comfirmation for the answer above )
A student carried out an investigation into the effect of temperature on the rate of an
enzyme-catalysed reaction.
At each temperature, the substrate concentration was measured after 10 minutes. All the other
variables were kept constant.
Which graph shows the effect of increasing temperature on the substrate concentration after
10 minutes?
Pls explain
Answer:
First graph.
Explanation:
If further increase in temperature occurs, it leads to decrease the substrate concentration because with very high temperature the enzyme is unable to perform its function. If the temperature is in optimum range, the enzyme produces more substrate due to favorable environment while on the other hand, if the temperature is below or above the optimum range so the enzyme can't perform its function properly and the substrate produce in small concentration.
A common misconception is that proteins are a good source of energy. Explain which types of foods are the best energy sources and how this relates to the amount of ATP made by your cell.
Answer:
Carbohydrates.
Explanation:
It is carbohydrates because they are the good source of energy . When carbohydrates are consumed it's digestion starts from the mouth, from chewing and it mixes with saliva from the salivary gland. As it is broken down the chemical energy unlock in it is released into the body which is absorbed by the cells for cellular metabolic activities. They turns into energy as soon as they are ingested and they energy powers the brain and the whole body.
Examples of carbohydrates are wheat, whole grains, rice, bread e.t.c.
What happens is substrate and enzyme is torn
Answer:If the enzyme changes shape, the active site may no longer bind to the appropriate substrate and the rate of reaction will decrease. Dramatic changes to the temperature and pH will eventually cause enzymes to denature.
Explanation:
How do cell differentiation and cell division work together?
Answer:
After mitosis is over, each of the daughter cells continues its separate life.
Explanation:
One or both can be started or continued through differentiation, ie. processes that give different cells special structures and functions. A cell destined to become a nerve cell moves in one way of differentiation, and a cell destined to be a muscle cell moves in another.
A variation of this mechanism involves a special type of cell called a stem cell. The stem cell divides by mitosis, whereby one daughter cell remains the stem cell and continues to divide again and again, while the other difference in certain cell peaks is determined in the tissues.
Use the diagram below to answer the following questions for 1 point each- explain the role of DNA in protein synthesis
Answer:
Regarding protein synthesis:
The role of DNA in protein synthesis is to contain the genetic information necessary for a specific protein to be manufactured, by transcribing it into mRNA.The role of mRNA in protein synthesis is to conduct the sequence of nitrogenous bases, organized in triplets or codons, to the ribosome for translation and initiation of synthesis.The processes of transcription and translation occur in the cell nucleus and cytoplasm, respectively.Explanation:
DNA is a molecule that contains the genetic information of an individual in a specific sequence of nitrogenous bases that are part of its structure. The process of transcription occurs in the cell nucleus and consists of the synthesis of a single-stranded mRNA molecule from one of the DNA strands.
The role of DNA in protein synthesis in the transcription of genetic information into mRNA.
Molecule of mRNA is that carries the sequence of nitrogenous bases that make up the genetic code, i.e., sequences of triplets or codons that encode the start of protein synthesis, the amount, type and order of amino acids of a protein, and the stop of synthesis.
The translation process —which occurs in the cytoplasm— is performed when the ribosomes read the genetic code and begins the union of amino acids into polypeptide chains. The role of mRNA in protein synthesis is then to drive the genetic code into the ribosome for translation.
Jasmine is a healthy girl who is playing outside. Her internal body temperature rises to 38 degrees Celsius, which is above normal. How does her body most likely respond to help her return to homeostasis?
Answer:
See the answer below
Explanation:
Jasmine's body would help her return to homeostasis by using the negative feedback loop.
The negative feedback loop works to negate the process or processes that lead to the body's setpoint being breached. The setpoint refers to the normal range of operation of body processes such as temperature, pressure, etc.
The skin of Jasmine acts as a sensor and sends information to the control center, the brain. The brain reads the temperature data, finds out that the setpoint has been exceeded, and sends information to the effectors to initiate processes that will return Jasmine's body temperature to normal.
One of the effectors, the blood vessels that supply blood to the skin becomes dilated. Consequently, more blood is supplied to the skin and more heat is lost from the skin due to radiation - blood being a conductor of heat in the body. Another effector, the sweat glands, release sweat to the skin. The evaporation of sweat from the surface of the skin causes the body to cool down. These processes work synergistically to return the body temperature of Jasmine back to homeostasis.
Answer:
By Sweating
Explanation:
Which system is responsible for the sense of taste?
qustatory
O olfactory
visual
O auditory
civity
void(O)
Answer:
a. gustatory
Explanation:
write about important steps in the process of water purification in a water treatment plant
Answer:
They typically consist of several steps in the treatment process. These include: (1) Collection ; (2) Screening and Straining ; (3) Chemical Addition ; (4) Coagulation and Flocculation ; (5) Sedimentation and Clarification ; (6) Filtration ; (7) Disinfection ; (8) Storage ; (9) and finally Distribution.
What biological process causes new strains of pathogen to develop
What system includes oxygen, nitrogen, and ozone? a. geosphere b. hydrosphere c. atmosphere d. biosphere Please select the best answer from the choices provided A B C D
Answer:
The answer is C.
Explanation:
Atmosphere includes oxygen, nitrogen, and ozone. So, the correct option is (C).
What is Atmosphere?
An atmosphere is defined as the gas layer or layers of gases covering a planet that are held together by the gravity of the planetary body. A planet maintains an atmosphere when gravity is high and the temperature of the atmosphere is low.
It is made up of layers of gases like oxygen, nitrogen, and ozone that surround a planet or other celestial body. Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and one percent other gases.
Earth's atmosphere extends up to 10,000 kilometers above the surface of the planet. After which the atmosphere merges into space.
Thus, atmosphere includes oxygen, nitrogen, and ozone. So, the correct option is (C).
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How do we get the energy out of the food that we consume?
Explanation: This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.
ANSWER:This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose
Explanation:
Describe the ways by which substances can cross the phospholipid bilayer
Explanation:
Simple Diffusion across the Cell (Plasma) Membrane The structure of the lipid bilayer allows only small, non-polar substances such as oxygen and carbon dioxide to pass through the cell membrane, down their concentration gradient, by simple diffusion.