HELP ASAP, this is for k12 bio

HELP ASAP, This Is For K12 Bio

Answers

Answer 1

Answer:  The correct answer is the first one.

A. The alveolus is a part of the lung and assists with gas exchange. The goal is to get gases into and out of the cells, so they enter our body, go to our lungs and then diffuse into our blood and travel to our cells through our circulatory system.


Related Questions

Which of the following are the products of the chemical equation
2H₂ + O₂ --> 2H₂O

H₂O
H₂
C8H18
0₂

Answers

Answer:

H20

Explanation:

Simply look at your right side of equation and product is always there.

Write an essay about your chosen job and the field of science it belongs to. Describe what that field of biology studies and how the job fits into that field. You should include information about a typical day in that job and the responsibilities and tasks of people in this profession. Be sure to include any important facts about how the job makes an impact in science and describe some of the significant discoveries that have been made in its field.

Answers

Working in molecular research would enable you to understudy the make up of materials.

Who is a molecular researcher?

A molecular researcher, is one who is interested in being able  to study the molecular composition of matter. This is one of the most fundamental areas of science as the scientists that work in this area are always trying to find out the molecules that compose matter. Recall that matter is anything that has mass and occupy space.

The area of molecular research is largely domiciled in the filed of biochemistry. Most of these molecules that are studied are of biological origin and can be found in the cell. During the pandemic, the molecular laboratories all over the word worked very hard to understand the nature of the corona virus.

Thus the field of molecular biology helps in the study of the DNA of living organisms as well us the understanding of the activities of enzymes. The greatest breakthrough of molecular research is the human genome project.

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why were Democritus ideas rejected by other philoshers of his time​

Answers

2,500 years ago, Democritus suggested that all matter in the universe was made up of tiny, indivisible, solid objects he called "atomos." However, other Greek philosophers disliked Democritus' "atomos" theory because they felt it was illogical.

Asexual reproduction provides for genetic diversity, the raw material for
evolution.
TRUE OR FALSE??

Answers

Answer: It is True

Explanation:

Genetic diversity is the raw material for EVOLUTION. False

What are the 4 nitrogenous bases that are represented by A, T, C, and G?

Answers

Adenine , Thymine , Cytosine and Guanine

Is the surface ocean current relationship reinforcing or balancing?

Answers

The surface ocean current relationship is balanced.

what is Geostrophic current?

At the point when the water is pushed to the right it frames the slope we describe previously. In this way, when water is moved along by the breeze it needs to be gone to one side by the Coriolis force (in the northern half of the globe) yet it should battle against gravity (attempting to climb the slope of water framed by Ekman transport). A balance is met between the Coriolis and the gravity (pressure inclination force). This balance delivers a fair stream called a Geostrophic current.

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Some bacteria contain a substance called nitrogenase. Nitrogenase
catalyzes the chemical reaction that converts atmospheric nitrogen
(N₂) into ammonia (NH3). Nitrogenase is an example of which
of the following?
A a sugar
B

an enzyme
Ca nucleotide
D
an amino acid
2

Answers

Answer:

B. an enzyme is answer og that question

what afe cells made of

Answers

Answer:

one of those could be the answer

Explanation:water, inorganic ions, and carbon-containing (organic) molecules.

Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules.

28 points!!!Some people say it’s b and some say C which is correct .To test the effectiveness of a new nutrient supplement one group of identical mice is given the supplement and the other group is not given any thing .which is the most complete list of the parts of the experiment presented in this scenario.look at pictures.ALOT of points on the line.

Answers

The following is the most comprehensive list of the components of the experiment described in this scenario:

control team.experimentation teamdependent element. Option B

Describe experiment:

This is a reference to the actions used to verify or disprove a theory. Other individuals who evaluate it, including scientists, use it to determine the veracity of the assertion.

According to the scenario, one group of identical mice receives the supplement while the other group does not, making the group that received the supplement the experimental group while the control group received nothing.

Option B was picked as the best option since the supplement that was provided to the mice served as the dependent variable.

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Question is in the image provided

Answers

C and D

The formation of some ATP molecules

The splitting of glucose molecules

It would be C and D. P sure

Sitenem asserts that all woman’s issues in society stem from where

Answers

The Sitenem asserts that all woman’s issues in society stem from the se- x based myth.

The correct answer choice is option c.

How does women problems arise from same se- x based myth?

It follows that in every society, there are always issues faced by the female gender which usually, frequently and most of the time results in the discrimination of their gender which does not favour them. Women are being discriminated against from all aspects of life such as education, career, politics and socially. It is on this premise that women issue originate from se- x based myth.

In conclusion, we can now understand that women are being faced face ld with the problem of se- x based myth

Complete question:

How does human human problems arise from same sex based might?

(a) The patriarchy

(b) Lack of constitutional protection

(c) Se- x based myths

(d) Se- xist laws

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How is looking at the carbon footprint or water footprint similar to looking at a biomass, energy,
or numbers pyramid?

Answers

The way that looking at the carbon footprint or water footprint similar to looking at a biomass, energy, or numbers pyramid is that indicates how much energy is stored as new biomass at each trophic level, and a pyramid of biomass shows how much biomass is stored as new biomass overall.

What is the carbon footprint of biomass?

Of all energy sources, biomass energy has the fourth-highest carbon footprint. On a life-cycle basis, biomass fuel emits 230 grams of carbon dioxide (CO2) for every kWh produced. It is not as advantageous as it might seem, it contributes to climate change, and has other detrimental environmental repercussions.

Therefore, note that at higher trophic levels, organisms are often greater in size, but because there are fewer of them, there is less biomass produced. The total mass of all trophic level creatures is known as biomass.

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What interesting new hypothesis is being studied regarding embryo self-inspection
early in development?

Answers

The hypothesis was regarding embryo self-inspection in early development is that viability of embryo metabolism is quite rather than active due to depletion and appearance of amino acids from culture medium.  

Early embryo consist of remarkable plasticity which means ability of separated early blastomeres to produce a whole organism. This aspect was determined from flux of radiolabeled methionine, premises that extent of DNA damage, RNA and protein content of immature oocyte are key factors whether zygote progresses to blastocyst stage.

This hypothesis was obtained from human and mouse and could be equally applied to reproduction in livestock, to get models for humans.

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a home made protocol for animal tissue DNA extraction?

Answers

DNA (deoxyribonucleic acid) is the hereditary material in almost all living organisms. Most DNA is located in the nucleus.

For extraction of DNA we need  500 ml water,91% Isopropyl Alcohol (rubbing alcohol),Dishwashing liquid, Salt, Food coloring (dark colors recommended),3 clear plastic cups

Steps include  Pour 500ml water in a plastic cup

2. Add one tablespoon of salt to the water

3.dissolved the salt completely

Transfer 2 tablespoons of salt water in a clear plastic cup

2. Vigorously trill the salt water

3. Spit salt water back into the same cup

When you trill the salt water, cheek cells will come out. Add 1ml of clear dishwashing soap to the salt .It will break open the cheek cells and their nuclei walls and this causes the DNA to be released into the salt water.

1. Pour 100 ml isopropyl alcohol plastic cup.

2. Add 3 drops of food coloring, and isopropyl alcohol  in a separate clear plastic cup.

2. Add 3 drops of food coloring, mix them well

DNA is insoluble in isopropyl alcohol so it will promotes the clustering of the DNA, making them visible.

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In mammals, X chromosome inactivation results in.
a total inactivation of both female X chromosomes
only the inactivation of the paternal X chromosome in females
only the inactivation of the maternal X chromosome in females
the random inactivation of either the paternal or the maternal X in females
the inactivation of the maternal X chromosome in males.

Answers

Answer:

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transcribe 3’ TACCGTTAGGATATC 5’

Answers

Based on the sequence, the given sequence is the non-transcribed strand of DNA. I wrote a sequence of double-stranded DNA. The top strand indicates the transcription start site ATG. In messenger RNA, T or thymidine is replaced by U or uracil.

You can look up the codon table to give all possible amino acids where ATG, which encodes methionine, can be the first amino acid.

5'-A T G G G A A AT C A T C G G T  G A-3'

3’-T A C C C T T T A G T A G C C A C T-5’

All mRNAs are read in the 5'-3' direction and polypeptide chains are synthesized from the amino terminus to the carboxy terminus. Each amino acid is specified by its three base codons in the mRNA, according to the nearly universal genetic code. The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA.

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Which best explains the process of meiosis? PLEASE ANSWER!!!!

Answers

Answer:

Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes

Explanation:

Please answer somebody right now

Answers

Answer: Muscle contraction occurs when the thin actin and thick myosin filaments slide past each other. It is generally assumed that this process is driven by cross-bridges which extend from the myosin filaments and cyclically interact with the actin filaments as ATP is hydrolysed.

Explanation: and this is what happens: The sliding of protein filaments is responsible for muscle contraction. When a motor neuron stimulates a muscle fiber, overlapping thick and thin filaments slide along one another and sarcomeres shorten. The combined shortening of many sarcomeres in many muscle fibers results in contraction of the whole muscle.

What type of symbiotic
relationship occurs between
humans that provide a home to
gut bacteria that help break down
the human's food?
A. parasitism
B. commensalism
C. mutualism

Answers

Answer:

mutualism is the answer

Answer: C. mutualism

Explanation:

7. How do mutations in DNA sequences affect a species?

Answers

Answer:

For mutations to affect an organism's descendants, they must: 1) occur in cells that produce the next generation, and 2) affect the hereditary material. Ultimately, the interplay between inherited mutations and environmental pressures generates diversity among species

Indicate whether each textbox refers to a genotype or a phenotype by dragging them to the correct answer box.

Answers

Answer:

Black body and red eyes are the phenotype and ggWw and hetrerozygous are the genotype.

Explanation:

The phenotype is what is presented while the genotype is what is occuring int he genes to cause the phenotype.

In your own words, what was the purpose of the lab?

Answers

The purpose of a lab is to test and solve theories, once tested/solved you know if your theory was right or wrong.

PLEASE NEED THIS RIGHT NOW PLEASE
WILL GIVE BAINIEST
what may happen to the population of pepper moths if they were relocated to a lush, green rainforest ecosystem. How would this impact natural selection and their struggle to survive?

Answers

Answer:

need more info, where r they now

Once a cumulus cloud has formed, what needs to happen in order to produce a
thunderstorm?

A downdraft in the atmosphere needs to activate
the water droplets to begin falling.

Some of the accumulated water droplets need to
detach from th cumulus cloud.

Enough water droplets need to band together to
start falling back to earth as rain.

The temperature needs to increase rapidly before
anything will change.

Answers

Answer: Enough water droplets need to band together to

start falling back to earth as rain.

Explanation: I took the test

Which means of particle transpoWhich means of particle transport requires input of energy from the cell?rt requires input of energy from the cell?

Answers

Active transport is the form of particle transport that requires input of energy from the cell.

Active transport is the one that makes use of energy for the transport of molecules across the membrane. It is further classified into two types: primary active transport and secondary active transport. Primary active transport directly uses the energy from ATP hydrolysis for the transport. Whereas, secondary transport involves cotransport system where the energy released from the downhill transport is used for the uphill transport of molecule.

Cell is the fundamental unit of life. It is the structural unit of all the organism. Cell can either be prokaryotic or eukaryotic.

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Over the last 540 million years, icecaps covered at least one of the Earth’s poles during three intervals.

Answers

The three final ice ages were within the periods between 450-420 mya, 360-260 mya, and 34 mya to show.

The ice age or serious wintertime term is caused by the variety within the time and concentration of Light. The light coming from the sun includes an exceptionally viable nature on earth's climate and by and large environment of the surface of the soil.

Andean-Saharan ice age (460 to 430 million a long time back)- It caused the mass termination of creatures, and after a brief term of time. The plants secured most of the surface of the soil. Because it too said that due to this tall number of plants another ice age was caused.

Karoo ice age (360 to 260 million years ago): karoo ice age worked much just like the same as that we are living in now. Antarctica solidifies over (14 million a long time back): Right now, we are living in this ice age. As the shafts of the soil are secured by ice caps.

The foremost latter is the Late Cenozoic ice age, beginning from 34 mya and still going on, in this way we are living in an ice age at the minute, fair that we are not in a period of glaciation.

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Although part of your question is missing, you might be referring to this full question:

Over the last 540 million years, icecaps covered at least one of the Earth’s poles during three intervals. When were those intervals?

27. In one part the ________ cycle, organic matter is buried underground andconverted to peat, coal, oil, or gas deposits.A. carbonB. nitrogenC. phosphorous

Answers

During the carbon cycle, organic matter can be used in multiple ways by different organisms, although, this chemical compound also can be buried underground and converted into peat, coal, oil, or gas deposits. This is possible due to organisms can store this material in their structures to grow, and eventually, when they decay, for example, when a tree or an animal dies, it begins to form part of the soil in which they were before. This is the reason why currently we can extract oil from underground sinks, because of those biggest organisms that lived millions of years ago, such as the dinosaurs and ancient plants.

Having this clear, we can say that the correct answer is the first one.

We can see the carbon cycle in this licensed image.

If a forecast states that the dew point and air temperatures are equal, what is likely to happen?

Answers

If a forecast states that the dew point and air temperatures are equal, the air is said to be saturated.

What is dew point?

The dew point is the temperature to which a parcel of moist air must be cooled at constant atmospheric pressure and constant water vapor content in order for saturation to occur.

The dew point can also said to be the temperature at which the actual pressure of the vapor contained in an air parcel equals the saturation pressure, under constant atmospheric pressure.

When the dew point is equals the air temperature, the air is saturated and the relative humidity is %100.

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A town located along the banks of a river has a 50-yard buffer zone exten
remain in its natural state. The town council is considering changing this zone from 50 yards to 15 yards so that a park
constructed. This project is expected to be completed within 2 years.
How will decreasing the buffer zone impact the biodiversity along the river?
OA. The change will have no impact because 2 years is long enough to allow organisms to adapt to the change.
OB. The change will have a negative impact because there will be less area for vegetation to filter runoff before enterin
OC. The change will have a positive impact because the townspeople will have a park and river walk to enjoy, and it wa
OD. The change will have a negative impact on people living near the park because there will be an increase in noise
the visitors.

Answers

The change will have no impact because 2 years is long enough to allow organisms to adapt to the change.

The correct option is A.

What is biodiversity and why it is important?

Biodiversity is essential to the systems that support all life, including human life, on Earth. Without a wide range of different creatures, plants, and microorganisms, we cannot have the ecological health that we rely on to provide us with the oxygen we and the food we eat. Additionally, people value nature in and of itself.

What advantages does biodiversity give?

Biodiversity contributes to a availability of food , nutrition, energy, the development of medications, and the demand for freshwater, all of which together support good health. Furthermore, it supports chances for employment and leisure activities that enhance overall wellbeing.

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Symbiotic relationships occur
between what types of
organisms?
A. Animals of the same species
B. Living and non-living things
C. Any two species that are living close together

Answers

C is correct I'm pretty sure. Any two species that are living close together
Other Questions
around your house and hit (or tap) ten different objects. The objects should be different shapes and made of different material (choose things to hit that wont break!). Each object is a different medium for sound. Try to hit each using the same amount of energy.Describe each object that you hit. What is its shape and what is it made of? Then describe how it sounds to you. Does it transmit sound well? Does it absorb sound? Is the sound loud or soft? Is there a ring to the sound? Does it sound like a thunk or does it sound like a drum?Rank the ten objects from loudest to softest.Draw some conclusions based on your results from Steps 1 and 2. For example, are there a certain shapes or materials that are better or worse media for sound traveplease help quick this is over do What would happen if there was no mutation? 1 3/4 x 4 2/6 nnnnnnnnnnn Tell whether x and y are proportional x: 4,6,12,16 y: 6,8,16,20 what does the hall-petch equation tell you about the relation between the yield strength of a material and the size of the grain in that material? what is the reason behind this relation? Whether a business makes a profit or loss is determined by the difference between the total amount of money a business takes in from sales, known as its , and the money needed to operate it, known as How many measures are there until the next part enters in Kookaburra?A. 2B. 1C. 3D. 4 How does jones argue democracy works in Athens ASPA Please identify the correct information that matches the correct colony or group of colonies.Please identify the correct information that matches the correct colony or group of colonies. a chemical ____ is a process in which some substances change chemically into different substances a uniform cube of mass m and edge a moves on a horizontal surface along the positive x-axis, with initial velocity v0: (a) during motion, n>mg (b) during motion, normal reaction acts on the centre of mass (c) during motion, the normal reaction shifts towards positive x-axis from the centre of mass (d) during motion, normal reaction shifts in the direction of the forces of friction For the function f(x)=4x+4,find (a) f(x+h), (b) f(x+h)f(x), and (c) f(x+h)f(x) h. (a) f(x+h)=? explain why population pyramids of developed countries have a narrow base showing few children, meaning a low birth rate. While in developing countries, the base is wide showing many children because of a high birth rate. the enzyme changes shape to fit the substrate.the enzyme changes shape to fit the substrate. the substrate changes shape to fit the enzyme.the substrate changes shape to fit the enzyme. the enzyme helps to break bonds in the substrate.the enzyme helps to break bonds in the substrate. the enzyme helps to create bonds between two substrates.the enzyme helps to create bonds between two substrates. the enzyme is a selective catalyst. Construct a basic pathway for blood flow in a human body using heart, arteries and veins. What was the League of Nations' response to the aggressive actions above?4The League of Nations was too weak to prevent Japan, Italy, and Germany fromattacking other nations.The League of Nations provided financial assistance to Japan and Italy.The League of Nations stopped the invasions. I'll mark brainliest to the best answer No plagiarism Explain Charles Cooley's looking-glass self-theory and relate it to your personal experience.400 words All of the following events helped to transition the medieval world view into the Renaissance world view EXCEPT:A. great schism B. Bubonic plaque C. Carolingian renaissanceD. Hundred years war. What significance does the middle passage have on changing the world? In an experiment, college students were given either four quarters or a $1 bill and they could either keep the money orspend it on gum. The results are summarized in the table. Complete parts (a) through (c) below.