mixing of pure and impure blood is prevented by what??​

Answers

Answer 1

Answer:The Pulmonary Valve

Explanation:


Related Questions

Plzz help!!!
Some scientists are modifying the genetic code of certain fish by inserting genes that cause the fish to produce more growth hormone, which causes the fish to grow more quickly. Salmon is one type of fish on which scientists are working. Which answer choice shows the most significant negative impact to society that could result from producing genetically modified salmon?

Salmon cells could become less responsive to the hormone over time, slowing the growth rate of the fish.

Salmon could be reintroduced into the ecosystem where they could breed with, and alter, populations of wild salmon.

The genetically modified salmon will be very expensive to raise, so the fish will be too expensive for people to buy.

The modified, farmed fish would be more difficult for predators to hunt than wild salmon if reintroduced into the ecosystem.

Answers

Answer:

breeding with and altering the population of wild salmon

the extra growth hormone could change the wild salmons reproductive fitness, could slow them down or make them less fertile or more fragile so they aren't able to spawn etc and reduce the wild population of salmon which would have large effects

there is a rainforest in BC that's survival relies on the nutrients that salmon bring when they spawn and die

It could also be scare mongering and have no negative effect, could be a net positive??

Explanation:

True or False

When two male lions fight over a dead zebra, it is called interspecific competition

True or False

Decomposers are fungi that break down decaying plants and animals

True or False

Bears are known to eat berries as well as fish and meat. Bears are omnivores.

Answers

When two male lions fight over a dead zebra, it is called interspecific competition

False

Decomposers are fungi that break down decaying plants and animals

True

Bears are known to eat berries as well as fish and meat. Bears are omnivores.

True


In a cell, the fluid within the cell membrane is called
And the fluid Outside the cell membrane is called:

cytoplasm; interstitial fluid
interstitial fluid: cytoplasm
interstitial fluid: tissue fluid
tissue fluid: interstitial fluid

Answers

in a cell the fluid within the cell membrane is called what? —-> intracellular fluid

the fluid outside the cell membrane is called what? —-> tissue fluid

im not toooooo sure about the second one buttt i tired lil

In a cell, the fluid within the cell membrane is called cytoplasm, and the fluid Outside the cell membrane is called interstitial fluid. The correct option is A.

What is cytoplasm?

The gelatinous solvent that fills the inside of a cell is known as cytoplasm. It is made up of water, salts, and organic molecules.

Certain intracellular organelles, including the nucleus as well as the mitochondria, are separated from the cytoplasm by membranes.

The cytoplasm of a cell performs all functions related to cell expansion, growth, and replication.

Interstitial fluid can be found in the spaces between cells. It is caused by substances leaking from blood capillaries.

It aids in the delivery of oxygen and nutrients to cells as well as the removal of waste products.

Glucose, salt, fatty acids, and minerals such as calcium, magnesium, and potassium are all found in interstitial fluid.

Interstitial fluid contains nutrients from blood capillaries. It can also contain waste products from metabolism.

Thus, the correct option is A.

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Suppose that a cytoplasmic protein (a protein that will function in the cytoplasm inside of the cell) is synthesized by a particular cell type. Describe the route that this protein will take from the moment its synthesis starts in the nucleus until it makes it into the cytoplasm.

Answers

Answer:

A specific gene that contains the information to encode the target protein is transcribed as a primary transcript (pre-mRNA). Subsequently, the pre-mRNA is processed to form a mature mRNA. Finally, this mRNA then moves through a nuclear pore from the nucleus to the cytoplasm where proteins are translated in the ribosomes

Explanation:

The cell nucleus contains the majority of the cell's genetic material localized on linear molecules called chromosomes. During transcription, genes (specific chromosome segments) are used to synthesize primary transcripts (pre-mRNAs) which are then proceeded to produce mature messenger RNAs (mRNAs). RNA processing involves the removal of non-coding intron regions and the joining of coding exon regions (RNA splicing) in order to form a mature mRNA sequence. Subsequently, the mature mRNA leaves the nucleus through the nuclear pores of the nuclear membrane and travels to the ribosomes where is decoded (translated) to produce a specific polypeptide chain (i.e., a protein). Within the ribosome, the mRNA strand binds to multiple transfer ribonucleic acids (tRNAs) via complementary and consecutive three-nucleotide mRNA sequences called triplets or codons, and tRNAs deliver specific amino acids that are consecutively added to the polypeptide chain.

Recently, a type of genetically modified fish has
been approved for sale for human consumption.
The modified fish contain a growth hormone
gene from a different fish species. As a result, the
modified fish grow rapidly and are ready to sell in
almost half the time it normally would take. The
modified fish are able to produce the new growth
hormone because
(1) each of their cells contains the new gene to
produce growth hormone
(2) each gene contains the code to synthesize
carbohydrates
(3) the altered gene directs the mitochondria to
synthesize the hormone
(4) the modified body cells are able to reproduce
by meiosis

Answers

Answer:

the answer is 1

Explanation:

I did the test it was right

Can someone please help me

Answers

Answer:

letter D

Explanation:

LETTER D•Enzymes Are usually Carbohydrates

Will give brainliest If you increase the rainfall across the region that the Buffalo are in, how do you think that would affect the carrying capacity for Buffalo in the ecosystem?

Answers

Answer:

The Buffalos carrying capacity would most likely go down if the water supply increases.

Explanation:

If water supply increases Buffalos would have easier access to water. example: instead of getting new water every month or so when it rained they can get water anytime due to the increased supply.

The "Buffalos-carrying" capacity would most likely go down" if, the water supply increases," If water supply increases Buffalos would have easier access to water".

Did a change in temperature cause the buffalo population to increase?

Buffalo does shift in regard to the environment because if the climate impacts the carrying-capacity, by involving the resources.

If "the carrying-capacity goes up or down then the people of buffalos would up or down "with it. Although it does not impact the population much.

Thus, Example instead of getting new water every month or so when it rained they can get water anytime due to the increased supply.

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In a series of 250 base pairs there are 28 guanine. How many adenines are there?

Answers

Answer:

278

Explanation:

Because How Many Is A Keyword

98. C=G. A=T. Cars in a Garage. Apples on Trees.

Is there any difference in the time of sunrise during summer ans winter?​

Answers

Answer:

yes winter time sunrise exactly time but winter time you can't see sun

Why are nonnative species a threat to biodiversity?

They often use up resources that other organisms need.
They are not able to successfully breed in the wild.
They release pollution into many environments.
They easily contract and spread diseases to other organisms.

Answers

Answer:

A

Explanation:

They often use up resources that other organisms need.

The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

Reason why nonnative species a threat to biodiversity:It leads to various kinds of diseases. It acted like predators or parasites. It acted like a competitor or rivalry. It should be hybridizing with local species.

Hence, The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

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Scientists identify hazards and assess exposure in the process of __________.
a.
toxicity studies
b.
risk assessment
c.
risk characterization
d.
toxic assessment
e.
toxic dosage

Answers

Answer:

b. risk assessment

Explanation:

risk assessment is the "process of gathering data and making assumptions to estimate short- and long-term harmful effects on human health or the environment from exposure to hazards associated with the use of a particular product or technology."

source: https://quizlet.com/2545977/aae-apes-unit-5-chapter-17-flash-cards/#:~:text=(risk%20communication).-,risk%20assessment,See%20risk%2Dbenefit%20analysis.

what vibrates as an electromagnetic wave passes by?

Answers

an electrically charged particle is your answer :)

Which type of fossil can help us understand an organism’s activity during its lifetime?

Answers

Answer:

trace fossils

Explanation:

Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms.

Answer:

Trace fossils

Explanation:

"Trace fossil is the type of fossil that can help us understand an organism's activity during its lifetime. Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms."

Hope this helps!!

This is not my answer by the way!! I do not own this!!

Please help! Thank you... 3

Answers

Answer:

Adenine (A) = 28%

Cytosine (C) = 22%

Explanation:

The DNA molecule, which is the genetic material that stores or holds information needed by the cell for growth, reproduction etc. Structurally, the DNA is composed of nucleotide subunits, which are of four types namely; Adenine, Guanine, Cytosine, and Thymine etc.

According to Chargaff in his complementary base pairing rule, he states that Adenine will always pair with Thymine (A-T) while Guanine will always pair with Cytosine (G-C). Based on this, Chargaff further stated that the amount of adenine must be equal with that of thymine while that of guanine must be equal to cytosine.

In total, their total amount must be equal to 1 or 100% i.e. (A + T) + (G + C) = 100%. In this question, 22% of Guanine are found in the DNA of a fox. This means that automatically, the percentage of cytosine is 22%. We then calculate the amount of Adenine and Thymine as follows:

(A + T) + (G + C) = 100%

A + T + 22 + 22 = 100

A + T + 44 = 100

A + T = 100 - 44

A + T = 56

Since A = T,

56/2 = 28

Hence, A = 28%, T = 28%

Difference Between organiseed
drug and unorganised drug​

Answers

Answer:

Organised crude drugs can be of plant & animal origin only while unorganized crude drugs can be obtained from plants, animals & additionally minerals. Organised crude drugs are direct parts of plants/animals whereas unorganized crude drugs are products of plants/animals.

Why would these modifications be important i.e.
what unique feature does Arthrobotrys have?)​

Answers

Answer:

Forming adhesive trapping nets.

Explanation:

These modifications are important to captured its food and to survive in the environment. Unique feature does Arthrobotrys have is the presence of predatory behaviour. Due to this predatory behaviour of Arthrobotrys, they are able to capture the food such as nematodes and feed on them. The Arthrobotrys belongs to the fungi family Orbiliaceae and have 71 species. This fungi formed adhesive trapping nets in order to capture its food.

who is Safai karamcharis? what will they do​

Answers

Answer:The National Commission for Safai Karamcharis  was formed as a statutory body to look into matters concerning the Safai Karamcharis’ welfare  For the first time,  was constituted as a statutory body under the act in 1993.

Luís is a rock collector. He thinks that the material from his favorite sedimentary rock in his collection might have been part of an igneous rock formation under Earth’s outer layer millions of years ago. Could Luís be correct?

a.
Yes, energy from Earth’s interior can cause igneous rock to break into small rock pieces that form sedimentary rock.

b.Yes, if igneous rock is moved to Earth’s surface and exposed to energy from the sun, it could weather into small rock pieces that could form sedimentary rock.

c.No, sedimentary rock can only form out of material from other sedimentary rock. There is no way that sedimentary rock can form from material in igneous rock.

d.No, sedimentary rock forms at Earth’s surface because energy from the sun causes rock to weather, but igneous rock under Earth’s outer layer is not exposed to energy from the sun.

Answers

Answer:

i think its b) yes if igneous rock.................................

The plasma membrane of a bacteria cell _____.

Answers

phospholipid bilayer

Find 2 mistakes in this DNA strand.

Answers

The g doesn’t go with a it’s the second to last one but how’s biology class

ADD NOTE QUESTION GUIDE
Scientists around the world use a standardized taxonomic
system. Why would scientists want to use a taxonomic system that is standardized?
A
In order to place organisms in different groups
B
In order to avoid confusion with the identification
of organisms
C
So that Latin names can be applied for a practical
purpose
D
Because Linnaeus established the system

Answers

Answer:

In order to avoid confusion with the identification of organisms

Explanation:

How are
lactic acid fermentation and
alcoholic fermentation similar?
How are they different?

Answers

Answer:

Both are anaerobic processes that break down glucose to make ATP and recycle NAD+ to glycolysis. Lactic acid fermentation produces lactic acid, alcoholic fermentation produces alcohol and carbon dioxide.

Explanation:

Hello what happens when you are. Buried wouldn’t it be bad if you were still alive and you wake up in a grave and it is pitched black?

Answers

Answer:

I mean yeah then you would just have to lay there and just slowly starve to death because your buried and the weight of the dirt or sand or whatever you got buried in would be to heavy

No, it’s not good you most likely suffocate and not survive especially in the dark at night someone might not hear you screaming in panic

Which part of the plant converts energy from the sun into food?
Question 1 options:

Roots

Stem

Leaves

Flowers

Answers

The answer is C) Leaves

Answer:

The leaves

Explanation:

its the leaves since they are the ones that take in the energy

Which of the following is an example of how culture can help humans
survive?
A. Inventing tools can help humans survive in their environment.
B. Overusing resources can make a survival practice unsustainable.
O .
C. Developing different religions can lead to conflict among
societies.
D. Having opposable thumbs helps humans grasp objects.

Answers

Answer : A

Explanation:

Inventing tools can help humans survive in their environment. Therefore, option (A) is correct.

Why inventing tools help human survive?

Culture refers to the shared beliefs, values, practices, and knowledge that characterize a group or society. Humans have relied on culture to survive and thrive for thousands of years. Inventing tools is an example of how culture can help humans survive. By creating and using tools, humans are able to adapt to and manipulate their environment to meet their needs. For example, early humans used tools to hunt, gather food, and build shelters, which helped them survive in their environment.

Overusing resources can lead to unsustainability and environmental degradation, which can threaten human survival. Developing different religions can lead to conflict among societies and does not necessarily help humans survive. Having opposable thumbs is a physical adaptation that has helped humans develop complex motor skills, but it is not an example of how culture helps humans survive.

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Movement of individuals into a population is referred to as:
emigration
death
immigration
population density

Answers

Immigration is the movement of individuals

Which of the following are internal cellular conditions?


A) temperature, pH, water concentration, salt concentration


B) sunlight, dry environment, wind

Answers

Answer: a

Explanation:

The following are internal cellular conditions :

A) temperature, pH, water concentration, salt concentration.

Temperature facilitates deciding what can input or depart the cellular and the way properly molecules observed inside the membrane can function. Temperatures that might be too excessive or too low can severely harm and, in the intense temperature ranges, kill the cellular via their impact at the cellular membrane.

Physiologically ordinary intracellular pH is maximum generally among 7.0 and 7.4, even though there may be variability among tissues (e.g., mammalian skeletal muscle has a tendency to have a pHi of 6.8–7.1). There is likewise a pH version throughout special organelles, that can span from round 4.5to 8.0.

Water concentration:

Water molecules flow into and out of the cell at an identical fee, so the length stays constant. then a cell. This method of water attention is better within the cell than outside. Thus, water flows out of them, inflicting them to shrivel or maybe die.

Salt concentration:

Increase of the way of life medium NaCl attention from a hundred and 20 mm to 220 mm ended in a reduced boom fee and a boom in the content material of ribonucleic acid (RNA), protein, and lipide phosphate consistent. Cell quantity becomes likewise increased.

How to maintain internal cellular conditions?

An organism ought to be capable of keeping internal cellular conditions even if the outside surroundings modify. Examples of modifications encompass pH, temperature, salt levels, water levels, and glucose levels.

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l. A farming area developed a major locust problem. Swarms of locusts were destroying crops and the environment. A team of
scientists developed an infectious disease that would reduce the population of locusts What would be most important to find
out before producing and releasing the disease?
how a decreased number of locusts would affect other organisms
which species might eat the crops in the absence of locusts
how the disease can be used for other applications
O how quickly farmers would get to see the results

Answers

Answer: how a decreased number of locusts would affect other organisms.

Explanation:

When engaging in any action aimed at destroying large numbers of an organism as is the case here, there is always a need to check what impact it might have on the ecosystem at large.

This is why it is very important that the effect of a decreased number of locusts on other organisms is evaluated before such drastic action is taken. If it would lead to a situation where the ecosystem is destabilized, the consequences would be far reaching and very damaging.

How a decreased number of locusts would affect other organisms is the

most important to find out before producing the disease.

What is Population?

This is referred to the number of organisms present in an area over a

specific period of time.

We were told that swarms of locusts destroyed the environment and

needed to be reduced through the creation of a disease. The effect the  

decrease in locust  has on other organisms has to be considered to ensure

the ecosystem is balanced and doesn't adversely affect others.

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describe all of the possible phenotypes of the father's parents. Show the punnet square to support your awnser

Answers

Answer:

We don't know.

Explanation:

We need more to answer this.

Which scientific area has the most influence in shaping modern classification methods?

Answers

Answer: The answer is " evolution". Evolution is a major force in shaping modern classification methods. Evolution is the adjustment in the qualities of an animal categories more than a few ages and depends on the procedure of common determination.

The scientific field which has had the greatest influence on shaping modern classification methods is Evolution.

What is Evolution?

Evolution is concerned with the sequence of changes which occur in organisms as they transform from their ancient forms to their modern forms.

It is the change in the genetic characteristics of a biological population over successive generations. These characteristics are manifestations of genes passed from parents to offspring during reproduction.

The three main types of Evolution are:

1. Divergent Evolution

2. Convergent Evolution

3. Parallel Evolution

Thus, the scientific field which has had the greatest influence on shaping modern classification methods is Evolution.

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