Answer:
Countercurrent flow met the goals due to difference in concentration gradient.
Explanation:
Countercurrent flow met the goals because it flows in opposite direction while on the other hand, parallel flow did not meet the goals because it flows in the same direction. For example. the blood flows in one direction and the dialysate flows in the opposite direction. The countercurrent flow of the blood and dialysate increases the concentration gradient between the blood and dialysate. The increased gradient helps to remove more potassium, phosphorus and urea from the blood. If we used parallel flow so less concentration gradient of solutes is present and hence, less potassium, phosphorus and urea are removed from the blood
In fluid or a flowing body when there is interexchange or a crossover of some fluids with each other is called countercurrent flow while when the fluid flows in the same direction then it is called parallel flow.
Countercurrent meets goals because of concentration gradient differences.
Countercurrent and parallel flow can be explained as:The goals are met in countercurrent because of the opposite direction while in parallel they are not achieved because of the same direction.Countercurrent flow in fishes helps them to increase the blood oxygen level from water as this system help them efficiently maximize the oxygen needed for respiration.If the parallel flow is used then the concentration gradient would be less and hence less oxygen will be available from the water to fishes.Therefore, countercurrent achieves its goal while parallel dies not.
Learn more about countercurrent and parallel flow here:
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Why do some organisms make one type of protein for a feature while other organisms make two? RIGHT ANSWER GETS CROWN
Answer:
For every gene, there may be several possible versions. Different genes carry instructions for making different proteins. If the gene copies are heterozygous, two types of protein are produced, if the gene copies are h0m0zyg0us, one type of protein is produced.
Explanation:
Every gene has several variants. Genes encode proteins. If the gene copies are heterozygous, two types of protein are produced; if they are homozygous, one type of protein is produced.
What is a gene?DNA, or in the case of certain viruses, RNA, is the medium in which an organism's genome is written. A gene is a section of the genome that contains the genetic instructions for making a particular protein or RNA. Codons are units of three nucleotides in a gene that each code for a specific amino acid. Genes that code for proteins are made up of these codons.
There might be multiple variants of each gene, depending on the circumstances. Instructions for the production of a variety of proteins are contained within each gene. If the gene copies are homozygous, then only one type of protein will be produced; however, if the gene copies are heterozygous, then two different types of protein will be produced.
Learn more about codons, here:
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Explain the importance of plants
(Please use 3-6 sentences)
(Worth a lot of points)
Which of the following describes a non-sense mutation?
A.Base pair change results in a premature stop codon; protein is nonfunctional.
B.Base is changed but the resulting amino acid is the same as in the non mutant DNA. No outward changes
.
C.A base is either added or deleted and causes the codons to be read incorrectly.
D.Base pair change results in a different amino acid; this may or may not affect the protein that result.
Answer:
A.Base pair change results in a premature stop codon; protein is nonfunctional.
Explanation:
Mutation, generally, refers to any change that occurs to the genetic sequence of a DNA. It can occur in different forms, hence, has different types. One particular type is the base pair substitution mutation, which involves the replacement of one or more nucleotide base by another in a sequence.
Base pair substitution can either result in one of the following namely: silent, missense, and nonsense. In NONSENSE mutation, the replacement of bases in the sequence causes the translation process to stop because a STOP CODON is prematurely encountered. Hence, the protein is non-functional.
The process by which an organism makes more of its own kind is
Answer:
yes it is reproduction hope it helps
What would the molecular formula be for the following? For each answer, state what kind of bonds hold the molecule together (ionic, polar-covalent, or non-polar covalent)
a. Flourine reacting with sodium
b. Oxygen reacting with carbon
c. Nitrogen reacting with hydrogen
d. Silicon reacting with hydrogen
e. Sulfur reacting with hydrogen
f. Magnesium reacting with oxygen
Answer:
Explanation:
A. sodium fluoride = NaF = ionic bond
B. carbon dioxide = CO2 = polar covalent bond
C. hydrogen nitrate = 2NH3 = ionic bond
D. silicon hydride = Si nH 2n+2 = polar covalent bond (i think.. could be non-polar but definitely not ionic)
E. hydrogen sulfide = H2S = non-polar covalent bond
F. magnesium oxide = MgO = ionic bond
hope this helps! :)
Describe how the gonorrhoea pathogen causes disease after it enter the body
Answer:
Gonorrhea is transmitted through sexual contact with the penis, vagina, mouth, or anus of an infected partner. Ejaculation does not have to occur for gonorrhea to be transmitted or acquired. Gonorrhea can also be spread perinatally from mother to baby during childbirth.
Think about the podcast that you listened to in the Lesson 2.01 Introduction. Write a one-paragraph (using complete sentences) description of the experiment that was performed on these two women. Be sure to include the following: Why was the experiment conducted? What was done to the two women in order to conduct the experiment? What conclusions could be made from this experiment? Why do you think that experiments like this are no longer performed?
Explanation:
The experiment was conducted with the purpose of understanding what makes us "who we really are"; our environment or genetics?
The two women, Paula Bernstein and Elyse Schein identical twins were separated from each other at birth and only got to be reunited when they turned age 35.
"It's undeniable that genetics play a huge role," says Paula. This makes us concludes that genetics still play a role in determining who really are.
Such experiments are no longer performed today because there are legal restrictions put in place against such actions, including the ethical issues it created.
Complete the sentences by matching the names of trees to the appropriate blanks. To do this, drag the names on the left into the appropriate blanks in the sentences on the right. Terms may be used more than once.
a. cedar
b. mango
c. elm
d, maple
e. pine
Evergreens are plants that maintain their leaves in all seasons and include trees such as___, ____, and____.
2. Deciduous trees lose their leaves seasonally and include trees such as___and___.
3. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include___and___.
4. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as___, ___, and____.
Answer:
1. cedar, mango and pine
2. elm and maple
3. pine and cedar
4. mango, elm and maple
Explanation:
Evergreen trees are plant tree species that remain green across seasons, even in cold/dry conditions, thereby contrasting with deciduous trees that lose their leaves in cold/dry conditions. Conifers (Coniferophyta) are gymnosperm plants that produce seeds without fruit/flowers. Conifers are vascular land plants composed of one that one class named Pinopsida, which consists of perennial plants with secondary growth. Moreover, mango, elm, and maple are hardwood trees that have seeds within fruits (i.e., they are angiosperms), which lose their leaves seasonally (i.e., they are deciduous trees).
9. All bacteria are _____________________.
Answer:
All bacteria can evolve by selection on changes to their genetic material DNA caused by genetic recombination or mutations. Mutations come from errors made during the replication of DNA or from exposure to mutagens.
Explanation:
I WANT A BRANLIEST TYYY!!
Which organelles must work together to provide food and energy to a
plant cell?
The incidence of V. vulnificus infections is increasing, especially in northern parts of the United States, compared to 20 years ago. Can you think of any reason why this might be happening?
Answer:
The effects of climate change may be associated with the increased incidence of V. vulnificus infection
Explanation:
Vibrio vulnificus is a harmful bacterium that causes a serious disease due to eating contaminated seafood, which is the main cause of seafood-related deaths in the USA. V. vulnificus is naturally present in the flora of coastal waters around the world and this bacterium has been isolated from a variety of seafood (e.g.., fish, oysters, shrimp, etc). Epidemiologic studies have shown that the incidence of V. vulnificus infection has increased dramatically since 1996. During this same period, climate change has been responsible for the increase in salinity and temperature of the coastal waters (i.e., the natural habitat of this bacterium). In consequence, it is reasonable to suppose that the change in climatic conditions may be associated with the increased incidence of V. vulnificus infection.
In the protein synthesis STEM case, which of the following mutations/errors created
a nonfunctional ADA enzyme (protein) which in turn caused deoxyadenosine to build
up?
A. tRNA error
B. Premature stop codon mutation
C. Active site mutation
Answer:
B. Premature stop codon mutation
Explanation:
1 An animal that eats other animals for energy are called
2. Several different populations living together live in an
3. An ecosystem contains ONLY living organisms. (True or False)
4. The food chain arrow going from the mouse to the owl shows that the
mouse is the
5. What level of organization in an ecosystem comes AFTER population?
6. Organisms that eat autotrophs.
7. The start of the flow of energy in every food web is the
8. ---------- predators live on the top of an energy pyramid.
4. A plant that makes its own food from sunlight, air, and water is a
10. Living things that break down decayed plants and animals into smaller
organisms are called
Answer:
heterotrophs animal=1
Explanation:
heterotrophs animal=1
4=aututrops plant
Why is understanding the niche of tree species important in forest management?
A)
It helps determine what kind of fertilizer is needed.
B)
It helps determine where the trees can be best planted or cultivated.
C)
It helps determine the type of organisms that use it as a habitat.
D)
It helps determine what kind of weather will affect it.
Answer:
B
Explanation:
Edge 2020-2021
3. A moving car backs into a parked car in a
parking lot. Why would the bumpers on both
cars be dented?
A. The parked car was made of weaker material
than the car that was moving.
B. The car that was moving was made of weaker
material than the parked car.
C. When one car bumps into the other car, they
collide with equal and opposite force.
D. The bumpers of both cars would not have
become dented as a result of this minor
collision.
Answer:
A. The parked car was made of weaker material than the car that was moving.
Explanation:
How have human activities effected the air in earth’s atmosphere?
Answer:
Human activities have had a negative impact on Earth's atmosphere.
Explanation:
Human activities, since the Industrial Revolution, have gradually been having more and more influence on Earth's atmosphere. As more and more the economies have developed, the bigger and bigger the output of gases into the atmosphere. The gases that are released into the atmosphere are mostly greenhouse gases, but there are also some that are highly toxic.
This has contributed to a sharp increase in CO2 levels in the atmosphere, which is speeding up the process of global warming, and that can have devastating consequences for life on Earth. Also, some of these gases managed to cause huge damage to the ozone layer, the layer that protects us from UV radiation, and if the ozone is gone, every complex organism will be gone as well.
How do changes in wind currents effect the short term climate in a region?
Answer:
Explanation:
When wind blow, move cold and hot temperature include moisture. When wind blow over the sea, they carry moisture from the place to another geographical zone, when the get to a colder area, the condense and fall back as water droplets. The way the wind pass each other and they directions they move cause short-term change in climate
i would appreciate it a lot if you answered this:
Answer:
the nucleus
Explanation:
Chromatin is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of our cells. The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus.
Why are models useful in Earth science?
Answer:
because it represents what happens
Explanation:
The following diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water.
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
Answer:
It stays the same
Explanation:
If you count each in both pictures, none are added nor removed.
Answer:
stays the same
Explanation:
Is an ionic bond more like a polar covalent bond or a non-polar covalent bond? Explain
Answer:
POLAR
Explanation:
The formation of an ionic bond is the result of the transfer of one or more electrons from a metal onto a non-metal.
Non-polar is an equal sharing of electrons, whereas polar is an unequal sharing of electrons.
Ionic bonding is on one extreme with a complete transfer of electrons forming charged ions. Non-polar covalent bonding with equal sharing of electrons is at the other extreme.
Even though ionic bonding is kinda in the middle, it leans more towards polar because they aren't two opposite extremes.
hope this helps ! :)
Match each digestive Juice or enzyme to the organ where it performs.
Explanation:
hope it helps
mark me brainliest please
Which organelle/part of the cell would say this if it could speak? I am like the broth or the liquid in vegetable soup.
There are carrots, peas, celery, and potatoes floating all in me.
1) Cytoplasm
2) Mitochondria
3) Nucleus
4) Vacuole
5) Cell membrane
Answer:
cytoplasm
Explanation:
woohoo biology.
A rna codon is uca what would be the amino acid created from this rna
Answer:
Methionine!
Explanation:
It's a stop codon
A neurologist noticed that in one patient, damage to brain structure A resulted in a major
disruption in speech production, but left hearing ability intact. However, in another patient,
damage to structure B left major hearing impairment, but did not affect speech production.
This scenario is an example of...
Wernicke's aphasia.
a double dissociation.
Broca's aphasia.
a single dissociation.
Answer:
a double dissociation.
Explanation:
Double dissociation is a psychological term used to describe a scenario whereby two mentally concerned processes are independent in function i.e they work specifically for different functions. In double dissociation, damage to one neurological (brain) area affects only one of two functions and have no effect on the other.
This is the case in this question where a neurologist noticed that damage to brain structure A of a patient resulted in a major disruption in speech production, but left hearing ability intact while a damage to structure B in another patient left major hearing impairment, but did not affect speech production. This example portrays what DOUBLE DISSOCIATION explains.
During Prophase I replicated homologous chromosomes pair up and undergo synapsis. What testable question is generated regarding synapsis and genetic variability by Figure 1?
A. Is the distance between two gene loci related to crossover rate?
B. Does crossing over occur more often in some chromosomes than in others?
C. Is crossing over inhibited by methylation? D. Is crossing over promoted by methylation?
Answer: A
Explanation: I saw it on quizlet
Refer to the experimental set-up above. What is the purpose of the overturned bucket (note it is solid, not clear) in part A?
Answer:
The bucket is taking in oxygen which makes the water inside the hot and thermometer solid its not clear because its taking in energy.
Answer:
hhahahha i need my points on my alt account
Explanation:
what is a hypothesis
Answer:
a suggested sollution or a guess to an information given to you
when you move your hand up and down while holding on a jump rope, you make a wave. What is the medium
Answer:
The medium of the wave is the Rope.
Explanation:
This is because it is transverse wave and transverse wave need a medium to transfer energy and this is because in transverse wave,particles of the medium move in a direction that is perpendicular to the direction of the transverse wave. From the question, when you move you hand up and down, you make a wave and the direction of the wave is also up and down which is perpendicular to the direction of the wave.
Should Marijuana be legalized? Why or Why not?