HELP ME PLEASE PLEASE PLEASE!!!
What best describes a river system?
A. the network that includes all the waters feeding into a main river and all the waters branching out from it
B. the source of a river and all the tributaries feeding into the river
C. the source and mouth of a river
D. all the distributaries flowing away from a river and the mouth of the river
Answers
Answer:
B the source of a river and all the tributaries feeding into the river
Explanation:
Related Questions
Create an
acrostic poem
using the word
ECOSYSTEM
Answers
Answer:
yuh
Explanation:
are contact lenses ever permitted in the chemistry laboratory in rutgers?
Answers
Wearing contact lenses in the laboratory is not recommended and is often prohibited by many institutions, including Rutgers. It is important to understand the policies and safety protocols in place to ensure a safe and successful Chemistry laboratory experience.
When it comes to wearing contact lenses in the laboratory, it is important to know whether they are permitted or not.Contact lenses are considered a hazard in the chemistry laboratory because they can trap particles and chemicals close to the eye, which can cause serious eye damage.Instead, it is recommended to wear safety goggles or glasses to protect your eyes from any potentially hazardous materials or splashes. If you must wear contact lenses for medical reasons, it is best to consult with the laboratory supervisor or instructor for specific guidelines and procedures that must be followed.In general, the safety of students in the laboratory is of the utmost importance, and the prohibition of contact lenses in the chemistry laboratory at Rutgers is part of the larger effort to maintain a safe and secure environment for everyone. It is always best to follow all safety protocols and guidelines, including not wearing contact lenses in the laboratory, to ensure a successful and injury-free laboratory experience.To learn more about contact lenses here:
https://brainly.com/question/10921004#
#SPJ11
Match the activities to their respective categories.
thickness of fur coat
nocturnal nature
type of beak
hibemation
flocking
Answers
The structural adaptation is thickness of fur coat, type of beak, while behavioral adaptation is nocturnal nature, hibernation, and flocking. of the following activities are structural adaptation is thickness of fur coat, type of beak, while behavioral adaptation is nocturnal nature, hibernation, and flocking.
What is adaptation?A body component, feature, or behavior that aids a living thing's survival and performance in its environment is referred to as adaptation.
The complete question is attached as image.
It can be structural adaptation means the physical changes that organisms undergo in order to adapt to changing environmental conditions Thickness or fur coat, beak type, tooth type, motions, and other structural modifications are examples.
All of the behavioral modifications that organisms make in order to adapt to diverse conditions/situations are referred to as behavioral adaptations. Hibernation, nocturnal nature, flocking, migration, bird cries, and other behavioral adaptations are examples.
Thus, the correct match will be structural adaptation is thickness of fur coat, type of beak, while behavioral adaptation is nocturnal nature, hibernation, and flocking.
For more details regarding adaptation, visit:
https://brainly.com/question/12534888
#SPJ1
while the semilunar valves are open during a normal cardiac cycle, the pressure in the left ventricle is
Answers
Using the theories of ventricle, we got that the pressure in the left ventricle is higher than the pressure in the aorta while the semilunar valves are open during a normal cardiac cycle.
The semilunar valves open when ventricular muscle contracts and generates blood pressure within the ventricle higher than within arterial tree, When the pressure in left ventricle exceeds the pressure in the aorta, ventricular ejection phase d, pulmonary semilunar valve will open, the semilunar valves open, the ventricular filling phase b, The semilunar (aortic and pulmonary) valves open at the beginning of this phase of the ventricular systole.
Hence, while the semilunar valves are open during a normal cardiac cycle, the pressure in the left ventricle is higher than the pressure in the aorta.
To know more about ventricle, visit here:
https://brainly.com/question/25955967
#SPJ4
Why does the texture of an igneous rock generally tell you more about how it formed than about its mineral composition?
Answers
Answer:
The texture of an igneous rock is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form, fast cooling yields small crystals.In addition to texture, igneous rocks may are classified according to their chemical composition.
Explanation:
1. list the energy sources used to synthesize atp for muscle contraction.
Answers
ATP or Adenosine Triphosphate is the primary source of energy for most cellular processes including muscle contraction. ATP is synthesized through several energy sources during muscle contraction.
The sources of energy that synthesize ATP for muscle contraction are as follows:Glycolysis: This process occurs in the cytoplasm and it converts glucose or glycogen into pyruvate. The energy released in this process is used to synthesize ATP. The net gain from glycolysis is two ATP molecules. Krebs cycle or Citric acid cycle: This cycle occurs in the mitochondria and it generates ATP by oxidizing acetyl-CoA to carbon dioxide. The total yield of ATP from one glucose molecule is 36 or 38 ATP molecules depending on the source of glucose. Electron transport chain: This is the final stage of oxidative metabolism that occurs in the inner membrane of mitochondria. During this process, electrons are transferred from one molecule to another and this generates a proton gradient. This gradient is used by ATP synthase to synthesize ATP from ADP and inorganic phosphate (Pi). The yield of ATP from one glucose molecule in this process is 28 or 32 ATP molecules depending on the source of glucose.
To learn more about Adenosine Triphosphate here
https://brainly.com/question/859444
#SPJ11
a person who is more than 2o percent heavier than the average person of the same sex and height is said to be
Answers
Answer:
overwieght
Explanation:
A)Using an example explain how enzyme and habitation exploited to control human diseases
B)Explain why the drug is poisonous to the Target organism but not to humans
Answers
Answer:
A. Rifampicin is an example of an enzyme inhibiting drug, since it acts on the bacterial RNA polymerase, preventing the transcription and synthesis of proteins, so the bacteria is not viable and a human disease is controlled.
B. The drugs have specificity by microorganisms —target organisms— which are also smaller and more susceptible, while their effect is minimal or null in human cells and are not poisonous for them.
Explanation:
Bacteria, viruses, parasites and pathogenic fungi are microorganisms capable of producing disease in humans. One of the ways to fight infectious diseases is the use of drugs called antibiotics, capable of interfering with the development of microorganisms.
Antibiotics or antibacterials are capable of preventing the synthesis of the bacterial wall or its reproduction, intervening in the synthesis of proteins. They do this through enzymatic inhibition of these processes.
Rifampicin is a drug capable of coupling itself to one of the sub-units of the RNA polymerase enzyme, changing its configuration and preventing its affinity for its substrate, the bacterial DNA. Rifampicin thus prevents the synthesis of proteins necessary for the development of the bacterium, which dies and thus manages to control an infectious disease.Drugs such as antibiotics act on specific bacterial functions —their target organism— by affecting the functions that allow them to live that allow them to live, as if they were poisoned. These same drugs have little or no effect on human cells when administered in appropriate doses. The few effects that are observed in human cells are not sufficient to kill them, but they do produce effects or secondary reactions, usually called adverse effects.The force that pulls planets toward the Sun is called
gravity
magne
Offerentiation
Answers
Answer:
The force that pulls planets towards the Sun is called gravity.
The dental formula for humans is A. surprisingly, the same as that of lemurs B. shared by over 100 other species, including chimpanzees, gorillas, and baboons. C. shared with only four other species D. unique and not shared by any other primate
Answers
The dental formula for humans is: B. shared by over 100 other species, including chimpanzees, gorillas, and baboons.
What is a dental formula?
Dental formula can be defined as a technique that is typically used to describe the number, kind and and arrangement of teeth in living organisms such as human beings.
Based on scientific records, the standard human dental formula is given as 2-1-2-3 or 2123/2123 in the lower and upper chamber of the mouth.
A true fact about the dental formula for humans is that it is shared by over hundred (100) other species of living organisms such as:
ChimpanzeesGorillasBaboonsRead more on dental formula here: https://brainly.com/question/9647990
Why do we need the brazilion forest
Answers
Answer:
We need the Brazilian forest because it produces roughly six percent of the world's oxygen and has long been thought to act as a carbon sink.
100 POINTS!
Describe why certain traits increase in frequency in a population. Provide ONE example to support your response. Be thorough in your response. (should be about 5-7 sentences)
Quick!
Answers
Answer: Certain traits increase in frequency in a population because when recombination occurs during sexual reproduction, genes are usually shuffled so that each parent gives its offspring a random assortment of its genetic variation, so the frequency of a gene may increase in a population through this genetic variation. One quote from a source I read states, "When recombination occurs during sexual reproduction, genes are usually shuffled so that each parent gives its offspring a random assortment of its genetic variation. However, genes that are close together on the same chromosome are often assorted together. Therefore, the frequency of a gene may increase in a population through genetic hitchhiking if its proximal genes confer a benefit."(lumen) This quotes explains why certain traits increase in frequency in a population.
Work Cited: https://courses.lumenlearning.com/boundless-biology/chapter/population-evolution/
Certain traits increase in frequency in a population because they have dominant traits.
What is dominant phenotype?What is dominance? We say that an allele is dominant when it manages to determine a phenotype, even if it occurs in a single dose. This means that the dominant allele will express itself in both homzygosity and heterozygosity. Dominant allele is expressed in the phenotype, even in a single dose.
With this information, we can conclude that certain traits increase in frequency in a population because they have dominant traits.
Learn more about phenotype in brainly.com/question/20730322
Thank you to whom ever helps brainiest and 5 stars thanks
Answers
Answer:
heyo
Explanation:
please brainliest this
in elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the x chromosome. an hermaphrodite who is lon and unc is mated to a wild-type male. an f1 hermaphrodite is mated to a wild-type male. what are the expected percentage of recombinants among the males?
Answers
The expected percentage of recombinants among the males from the mating of an hermaphrodite that is lon and unc to a wild-type male, and the subsequent mating of the F1 hermaphrodite to a wild-type male is 25%. This is because the two recessive mutations, lon-2 and unc-2, are 8 map units apart on the X chromosome. Therefore, the chance of crossover between them is 25%.
For a crossover to occur, homologous chromosomes need to pair up during meiosis and exchange genetic material. Because the lon-2 and unc-2 genes are 8 map units apart, this allows for a crossover to occur. The crossover occurs between the genes, and not between alleles, so the crossing-over rate is 25%.
In the F1 generation, each male has a 1/4 chance of being recombinant for the lon-2 and unc-2 genes. Therefore, the expected percentage of recombinants among the males is 25%.
For more similar questions on chromosome
brainly.com/question/11912112
#SPJ11
How do you calculate Neutrons?
Answers
your answer is in the attachment.... hope it helps you!!!
what is the minimum number of reactive antigen-positive and non-reactive antigen-negative panel cells that must be present in order to identify a red cell antibody with statistical confidence?
Answers
The minimum number of reactive antigen-positive and non-reactive antigen-negative panel cells that must be present in order to identify a red cell antibody with statistical confidence is three.
Rule-out (аlso referred to аs exclusion or cross-out) is а process by which аntibodies аre identified аs being unlikely in а given sаmple due to the аbsence of аn expected аntigen-аntibody reаction. In other words, the аbsence of а reаction is noted with а cell thаt is positive for the corresponding аntigen.
Rules for whаt constitutes а proof of аssociаtion vаry from centre to centre, but а commonly аccepted аpproаch is the “rule of three”: if three cells thаt express the аntigen in question аll reаct with the pаtient’s plаsmа, аnd three cells thаt don’t express the аntigen аre аlso аll non-reаctive, the аntibody cаn be considered to hаve proven specificity аgаinst the аntigen in question.
Your question is incomplete, but most probably your options were
A. Two
B. Three
C. Five
D. Ten
Thus, the correct option is B.
For more information about аntigen-аntibody reаction refer to the link:
https://brainly.com/question/29388163
#SPJ4
The primary difference between active transport and facilitated diffusion is that active transport is the only one in which
A) [S]high → [S]low.
B) transporter proteins are required.
C) [S]low → [S]high.
D) the concentration gradient provides the necessary energy for movement.
Answers
The correct answer is B) transporter proteins are required. Facilitated diffusion and active transport are both mechanisms for moving molecules across a membrane, but they differ in the energy requirements and the use of transporter proteins.
Facilitated diffusion relies on a concentration gradient and uses transporter proteins to move molecules from high to low concentration, but it does not require energy input. In contrast, active transport moves molecules against their concentration gradient, which requires energy input from ATP hydrolysis or other sources, and it always involves transporter proteins to facilitate movement.
Therefore, the key difference between the two processes is the requirement of transporter proteins for active transport.
Learn more about transporter proteins
https://brainly.com/question/5102555
#SPJ4
As means of locomotion, bacteria posses
Answers
The answer is flagella.
Answer:
Flagella.
Explanation: Cause im gangsta
Why p-nitrophenolphosphate → p-nitrophenol is an ideal reaction for this laboratory assay?
Answers
Protein, alkaline, and acid phosphatases are all measured using the non-specific, non-proteinaceous substrate known as p-Nitrophenyl Phosphate (PNPP). So, it is an ideal reaction for this laboratory assay.
What is p-nitrophenolphosphate ?In ELISA and traditional spectrophotometric experiments, para-Nitrophenylphosphate (pNPP) is a non-proteinaceous chromogenic substrate for alkaline and acid phosphatases.The hydrolysis of pNPP by phosphatases releases inorganic phosphate and the conjugate base of para-nitrophenol (pNP).The resultant phenolate has a maximum absorbance at 405 nm and is yellow in colour.Alkaline phosphatase (AP) and protein tyrosine phosphatase are two phosphatases that can be measured using this characteristic (PTP).The material needs to be stored in a dark, shielded area because it is light-sensitive. Before reading and after incorporating the substrate into the mixture, this is equally crucial.Learn more about p-nitrophenolphosphate here:
https://brainly.com/question/22076495
#SPJ4
In diffusion, when the concetration of molecules is equal or even, this is called what? equality equilibrium unequality paralibrium
Answers
Answer: paralibrium
Explanation:
Where are proteins that are used in the cytoplasm translated?
Answers
Proteins that are used in the cytoplasm are translated in the cytoplasm itself, specifically on ribosomes.
Ribosomes are the molecular machines responsible for the synthesis of proteins by linking amino acids together in a specific order according to the instructions carried by messenger RNA (mRNA). Ribosomes facilitate the process of translation, converting the information from mRNA into the amino acid sequence of the protein.
The ribosomes themselves are made up of two subunits, one large and one small, and they can be found either free-floating in the cytoplasm or attached to the endoplasmic reticulum (ER).
Once the protein is fully synthesized, it can then be folded and modified as needed before carrying out its specific function within the cytoplasmic environment.
To learn more about proteins, click here:
https://brainly.com/question/29776206
#SPJ11
Why does Darwin's Theory of Natural selection disprove Lamarck's Theory of inheritance of Acquired Characteristics? Answer in a short and clear answer
Answers
Lamarck's theory of Inheritance of Acquired Characteristics proposed that an organism experiences modification that can be transmitted to its offspring. However, Darwin's Theory of Natural selection disproved the Lamarckian theory. Many biologists have tested this theory (Lamarckian theory) and the result is, more evidence is being demonstrated that the traits and behavior of organisms were the results of natural selection; hence, these changes are mainly controlled by genes.
6co2 6h2o light energy ---> c6h12o6 6o2 what do you think will happen to the rate of the reaction as the light source is moved further away from the aquatic plant
Answers
The process of photosynthesis, which results in the production of glucose in plants, is 6 CO 2 + 6 H 2 O light C 6 H 12 O 6 + 6 O 2 6CO2+6H2O.
What kind of reaction produces C6H12O6 6O2 energy from 6CO2 6H2O?6CO2+6H2OC6H12O6+6O2 is the chemical equation for photosynthesis. 6CO2+6H2O→C6H12O6+6O2. In plants, the chloroplasts in the mesophyll of the leaves are where photosynthesis occurs.
What part of photosynthesis does 6CO2 play?Carbon dioxide and water are changed into glucose and oxygen during photosynthesis. Since glucose is a big molecule (C6H12O6) with six carbon atoms, only six molecules of carbon dioxide (CO2) are needed to create one molecule of glucose.
To know more about Photosynthesis visit:-
https://brainly.com/question/1388366
#SPJ4
Viruses can be prevented by receiving a weakened form of the virus called a?
A)plastid
B)vaccine
C)antibiotic
D)fertilizer
Answers
A pachyderm dangled over the protein web of a arachnid and as he saw that it resisted they went to call another pachyderm. What diameter should the spider web have to support the weight of n elephants? Hint: Young's modulus for a cloth of spider is about 0.2x10^10 Pa and the web breaks when It is subjected to a deformation of 5%. compare this result with a steel cable of 20x10^10Pa and that breaks when deformed to 0.05%. (Note: the thickness of a silk thread of spider is 1 micron)
Answers
The diameter of the spider web needed to support the weight of 4 elephants would be approximately 263.26 meters, considering the tensile strength and deformation limits of spider silk.
To calculate the diameter of the spider web required to support the weight of 4 elephants, we need to consider the tensile strength and deformation limits of the spider silk.
Let's start with the weight of the elephants. You mentioned that each elephant weighs 300 pounds. To convert this to kilograms, we divide by the conversion factor of 2.2046:
Weight of 1 elephant = 300 pounds / 2.2046
= 136.08 kg
Now, let's calculate the total weight of 4 elephants:
Total weight = 4 elephants × 136.08 kg/elephant
= 544.32 kg
To calculate the required diameter, we need to consider the weight of the elephants and the tensile strength of the spider silk. We can use the formula for stress:
Stress = Force / Area
The force is equal to the weight of the elephants, and the area is the cross-sectional area of the spider web.
The deformation of the spider web can be calculated using Hooke's Law:
Deformation = (Stress / Young's modulus) × Length
We know that the deformation limit is 5% of the length, so we can set up the equation:
0.05 × Length = (Stress / Young's modulus) × Length
Simplifying and rearranging:
Stress = 0.05 × Young's modulus
Now we can substitute the formula for stress into the earlier equation:
(Weight of elephants) / (Area) = 0.05 × Young's modulus
Rearranging to solve for the area:
Area = (Weight of elephants) / (0.05 × Young's modulus)
Finally, we can calculate the diameter using the formula for the area of a circle:
Area = \(\pi * (diameter/2)^2\)
Rearranging to solve for the diameter:
diameter = \(\sqrt{((4 * Area) / \pi )\)
Let's plug in the values and calculate the diameter:
Weight of elephants = 544.32 kg
Young's modulus of spider silk = 0.2 × \(10^{10\) Pa
π = 3.14159
Area = (544.32 kg) / (0.05 × 0.2 × \(10^{10\) Pa)
= 544.32 kg / (0.01 × \(10^{10\) Pa)
= 544.32 / 0.01 \(m^2\)
= 54432 \(m^2\)
diameter = \(\sqrt{((4 * 54432 m^2) / \pi)\)
= \(\sqrt{(217728 m^2 / 3.14159)\)
= \(\sqrt{(69297.89 m^2)\)
= 263.26 m
To learn more about tensile follow the link:
https://brainly.com/question/31432953
#SPJ4
The correct question is:
A pachyderm dangled over the protein web of an arachnid and as he saw that it resisted they went to call another pachyderm. What diameter should the spider web have to support the weight of 4 elephants?
[Hint: Young's modulus for a cloth of spider is about 0.2 × \(10^{10\) Pa and the web breaks when It is subjected to a deformation of 5%. compare this result with a steel cable of 20 × \(10^{10\) Pa and that breaks when deformed to 0.05%. (Note: the thickness of a silk thread of spider is 1 micron and the weight of elephant 300 pounds)]
The element nitrogen is present in all of the following except A) proteins.B) nucleic acids.C) amino acids.D) DNA.E) monosaccharides.
Answers
Nitrogen is present in all of the options listed except for monosaccharides. Thus, correct option is (E).
A crucial component of biological compounds is nitrogen. Nitrogen is a component of proteins, nucleic acids (DNA and RNA), amino acids (which serve as the building blocks for proteins), and DNA. Amino acids, which make up proteins, contain nitrogen as a necessary part of their structure.
Adenine, cytosine, guanine, and thymine/uracil are nitrogenous bases that are essential for the operation of nucleic acids, including DNA. Monosaccharides, simple sugars and the fundamental unit of carbohydrates, do not, however, include nitrogen. Instead, the majority of their atoms are made up of carbon, hydrogen, and oxygen.
To know more about Nitrogen here https://brainly.com/question/11483365
#SPJ4
Which statement describes the reaction for cellular respiration?
Answers
Answer:
Your answer is B
Explanation:
hope it helped
Answer:
B
Explanation:
A punnet square is used to determine what?
Answers
Answer:
predict genotypes
Explanation:
Answer: genotype
Explanation: A Punnett Square is a helpful tool that helps to predict the variations and probabilities that can come from cross-breeding. This includes predicting crossing plants, animals, and even humans with each other.
The type of cell connection that serves as a permeability barrier is a
A. hemidesmosome.
B. desmosome.
C. gap junction.
D. intercalated disc.
E. tight junction.
Answers
A tight junction (also known as a zonula occludens) is a type of cell connection that serves as a permeability barrier, preventing the uncontrolled passage of substances between cells.
Here correct answer is E)
It is formed from integral membrane proteins that link the cytoplasmic faces of two adjacent cells, forming a tight seal and preventing the leakage of molecules through the intercellular space. It is the strongest type of cell-cell junction and can maintain strong connections even under considerable pressure. Tight junctions are important for maintaining cell adhesion and polarity, as well as forming the epithelial barrier which prevents certain molecules from passing through.
Furthermore, tight junctions play a critical role in the formation and maintenance of the blood-brain barrier, ensuring that toxins and pathogens do not enter the brain. In summary, tight junctions are an important type of cell connection that serve as a permeability barrier between cells and are involved in many vital physiological functions such as maintaining the integrity of the epithelial barrier and the blood-brain barrier.
Know more about tight junction here
https://brainly.com/question/27960197#
#SPJ11
Sickle cell anemia is passed from parent to offspring. Which condition causes changes that are inherited?
excessive exposure to sunlight
a Dracunculus medinensis parasitic infection
ovum (egg) exposure to radiation before fertilization
prolonged exposure to chemicals
Answers
Answer:
ovum (egg) exposure to radiation before fertilization
Explanation:
For a mutation to be inherited, it must affect the egg or sperm before the embryo is formed (fertilization). Radiation is a mutagen - it can cause mutations to the DNA and those could be inherited. The other options would only affect somatic cells (body, not egg or sperm) which are not passed on