the main respiratory surface in man is; Select one: A. alveolar wall B. internal nostrils C. bronchial wall D. tracheal wall

Answers

Answer 1

Answer:

answer is alveolar wall

Answer 2

Answer:

Option A

Explanation:

Alveolar Wall forms the main respiratory surface where exchange of gass happens.


Related Questions

Select the correct answer. A normal appearing couple is found to be heterozygous recessive for albinism. Both have the genotype Aa. The gene responsible for albinism is recessive to the normal pigment-producing gene. What are the chances of their children being albino? A. 3:4 children will be albino. B. All children will be albino. C. 1:4 children will be albino.

Answers

Answer:

C. 1:4 children will be albino.

Explanation:

Hope it helps.

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Change the stimulus to read: Edward Jenner?'s smallpox inoculation experiment was based on his observation that
dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
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Answers

Answer: It's A

Explanation:

Which types of measurement are used to describe quantities of heat and temperature ?

Answers

Answer:

There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.

Explanation:

Hope this helps you!

If blood flow in the capillaries of the alevoli was reduced what would be the effect?

Answers

Explanation:

Intrinsic diffusion barriers between alveoli and capillaries can result in hypoxemia.

Mark me as the Brainleist plz..

Answer:

less o2

Explanation:

The theory of plate tectonics helps to explain _____.

Answers

the theory explains how Earth's plates form and move. it also explains how plates interact ,producing volcanoes,mountain range ,earthquakes,and featurs of the ocean floor


this is copied and pasted so don’t write word for word

Hug
Science
7. Fill in the blanks with the word from
the plant pot below
Plants can only grow
under certain​

Answers

The question is incomplete the correct question is attached in the form of the image:

Answer:

Plants can only grow under certain conditions.1. condition. They need 2. Water, air, light, and warmth. If a 3. plant does not have these things will slowly die. A 4. healthy plant has green leaves and stands up strong. A plant that has been deprived of 5. light will lose its leaves. A plant that has been deprived of 6. nutrients will turn yellow, thin and, 7. spindly. To stay healthy a plant needs to take water and nutrients from the 8. soil. Plants take 9. carbon 10. dioxide from the air and use it with water and 11. light to make ts food.

Plants can only grow under certain​ conditions, which include:

waterairlightwarmth

What are environmental conditions?

Environmental conditions can be defined as different circumstances in which an organism can survive and reproduce.

Organisms are adapted to survive to different environmental conditions (e.g. temperature conditions).

An organism that can live in a wide range of environmental conditions is a eurytopic organism.

In conclusion, plants can only grow under certain​ conditions.

Learn more about environmental conditions here:

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Which of the following describes the function of carbohydrates? A. Carbohydrates store hereditary information. B. Carbohydrates help leaves absorb the sun's energy. C. Carbohydrates surround and protect internal organs. D. Carbohydrates store energy in their bonds.

Answers

Answer:D. Carbohydrates store energy in their bonds

Explanation:

The C—H bonds found in carbohydrates store energy

Answer:

D

Explanation:

AP3X

How is sexual orientation different from gender?

Answers

Answer:

sexual orientation is how you feel and what genders you are attracted to sexually (straight, bisexual, lesbian, etc) gender is what you were born as or who you identify as.

Explanation:

The nurse is observing a set of new parents to ensure that they are bonding with their newborn. What displayed behavior would indicate that the parents bonding is maladaptive?

Answers

Answer:

Neglecting the child

Explanation:

Maldatives behaviors are the behaviors that do not facilitate the parent-infant bonding, meaning that they are those behaviors that are hindering the process. And the best way of removing that is to encourage the behaviors that counter them.

The process of pointing out the responsiveness of the infant is a positive strategy for facilitating parent-infant attachment. Telling the mother that she must pay attention to her infant may be perceived as derogatory and is not

appropriate. Educating the mother in infant care is important; however, pointing out the responsiveness

of her baby is a better tool for facilitating mother-infant attachment. .

During handwashing, how do you turn off the water?

Answers

Answer:

Well you can use your elbow to turn it off.

Answer:

I use my hands

Explanation:

I turn the water on, then rinse my hands, get the soap, rinse them off, and them turn the water off and dry.

Un jardinero cruzó dos plantas de flores rosadas, con la esperanza de obtener plantas con flores del mismo color. Su sorpresa fue encontrar que, en la descendencia, aparecían flores rojas, rosadas y blancas en la proporción 1:2:1. Pregunta: a) ¿En qué se diferencia la herencia del color de estas flores y la de los guisantes? b) Indica el genotipo de las plantas del cruzamiento descrito.

Answers

Answer:

Este es un ejemplo de dominancia incompleta. Es una ocurrencia genética que ocurre cuando un gen dominante no expresa su manifestación completa en el alelo recesivo en un alelo dominante heterocigoto.

Por lo tanto, ambos rasgos se manifiestan, lo que resulta en la combinación de los dos alelos para los colores (blanco y rojo). Se dice que el alelo rojo dominante exhibe un dominio parcial sobre el alelo blanco recesivo, y esto da como resultado el alelo completamente rosado.

De acuerdo con la ley mendeliana, las dos flores rojas son heterocigóticas. Por lo tanto, las flores rojas heterocigóticas dominantes deben ser R. El alelo blanco es recesivo (rr) enmascarado por el rojo R,

Sin embargo, cuando se cruzan los dos alelos heterocigotos rojos:

Los fenotipos están en forma de

RR, (1) rojo Rr Rr (2) rosa rr (1) Blanco.

Esto ocurre porque el alelo rojo dominante no era total / completamente dominante en el alelo recesivo blanco en cada uno, lo que da como resultado un alelo rosa (el tercer fenotipo)

This is an example of incomplete dominance.It is a genetic occurrence  which occurs when a dominant gene does not express it full manifestation on the recessive allele in an heterozygote dominant allele.

Therefore,both traits are manifested which results in the blend of the two allele for colors(white and red).The dominant red allele is said to exhibit partial dominance over the recessive white allele.And this results in the entirely pink allele.

Based on Mendelian law the  two red flowers are  heterozygotes .Therefore, Red heterozygote dominant flowers should beRr.The white allele is recessive(rr) masked by the R-red,

However,when the two red heterozygote alleles are crossed:

The phenotypes are in the form of  

RR,(1) red  Rr Rr(2) pink  rr(1)White.

This occurs because, the dominant red allele was not fully/completely  dominant on the  white recessive allele in each,which results in pink allele(The third phenotype)

Explanation:

The branch of science which deals with living beings is called biology.

The language of the question is different so it is difficult to answer it.

According to the data given in the question, they are discussing incomplete dominance because the ratio is 1:2:1.

The cross in which the dominant parent is not able to show its character and does not able to suppress the recessive gene. In this case, the plants show the character of somewhere in between both of the cases.

Therefore, they get the ratio of 1:2:1 which indicates the phenotype of red: pink: white.

Hence, the correct answer is incomplete dominance.

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Assignment: 02.03 Oceans Impact on Weather

Answers

Can you add a picture or question so we can answer your problem/question?

explain why traits that aren’t present in either parent could show up in the offspring or in future generations of the offspring.

Answers

It can show because it can be a recessive trait that can be showed up in ones genes. Recessive traits can be less present in parent parents but if both parents have similar recessive traits it can be able to show up in offspring and future offspring. Also it can show in offsprings because of earlier generations. The parents might not have these traits but grandparents are great grandparents might have the traits.

Give the names of two co- enzymes that take part in the cellular respiration.

Answers

Answer:

Explanation:

Two of the most important and widespread vitamin-derived coenzymes are nicotinamide adenine dinucleotide (NAD) and coenzyme A. ... When NAD loses an electron, the low energy coenzyme called NAD+ is formed. When NAD gains an electron, a high-energy coenzyme called NADH is formed.

If a plant has a high concentration of minerals inside its root cells, but does not have enough energy for active transport, what could happen to the minerals?

Answers

Answer:

The minerals will not be move or transported to other part of the plants because active transport require energy.

Explanation:

Active transport is a process where molecules and ions are move against a concentration gradient by using energy.

This process require energy, for ions or molecules of minerals to be taken up by plants, it is first moved to the root hairs where they are in high concentration against in dilute concentration on soil Active Transport then occur in the roots where it is taken up to the plants with the use of energy.

If there is not enough energy, active transport will not occur and the minerals will remain in the root hair and will not be move to other part of the plant.

Which statement is an example of a scientific theory? A. The Earth is the third planet from the Sun and has one moon, which orbits the Earth. B. Hummingbirds do not like the color white because they visit other colored flowers more often. C. All living organisms are composed of one or more cells, which came from pre-existing cells. D. The amount that caffeine affects a person's heart rate differs based on the person's age.

Answers

Answer:

D: The amount that caffeine affects a person's heart rate differs based on the person's age.

How are Dobzhansky and Mayr's ideas about the origin of species similar to Darwin’s?

Answers

Answer:

evolution of new species is linked to environmental changes

Explanation:

might help

Can someone please help me ​

Answers

Answer:

Trypsin

Explanation:

Rennin has an optimum pH of 3.4.

Pepsin has an optimum pH of 2.0.

Trypsin has an optimum pH of 7.5.

Salivary amylase has an optimum pH of 6.5.

Enzyme Y is Trypsin.

during photosynthesis, the energy fro. Sunlight is used to split water molecule. What happens to the hydrogen ions that are split from water molecule

Answers

Answer:

Hydrogen ions are transported across the thylakoid membrane.  Hydrogen ions diffuse through a protein channel.

Explanation:

Which is not likely to be studied by a biologist?

Answers

Answer:

there are many things that are not studied by biologist such as physics, figuring out new elements

Explanation:

biologists are people that study peoples life

Answer:

clouds

Explanation:

Briefly describe two ways in which the Hardy-Weinberg equation can be used to get information about a population.

Answers

The Hardy-Weinberg equation can be used to determine probable frequencies of genotypes in a population. It can also track changes of genotypes from generation to generation

Answer:

The Hardy-Weinberg equation can be used to gather valuable information about a population in the following two ways:

1) Estimating allele frequencies: The Hardy-Weinberg equation allows scientists to estimate the frequency of specific alleles within a population. By comparing the observed frequencies with those predicted by the equation, researchers can determine if the population is in genetic equilibrium, meaning that the allele frequencies are stable and not evolving over time.

2) Identifying evolutionary forces: If a population deviates from the expected Hardy-Weinberg equilibrium, it suggests that one or more evolutionary forces, such as natural selection, genetic drift, gene flow, or mutation, are at play. By analyzing these deviations, scientists can gain insights into the factors influencing the genetic makeup of the population and better understand the evolutionary processes driving changes in the population's gene pool.

Explanation:

HELP !!!!

Which of the following statements is true of meiosis?

Answers

Answer:

The answer is option D.

it divides one diploid cell into four haploid cells

Hope this helps you

ONLY ONE ANSWER!!

Which is one effect that would most likely result from a tsunami?
death
drought
extinction
genetic change

Answers

Death - A tsunami involves an ocean which wouldn’t cause a drought because the mass of water extinction the tsunami as a whole wouldn’t destroy every living thing on earth but cause a large death toll genetic change wouldn’t occur

One of the consequences of tsunami happening in a place would be death and destruction of biodiversity.

What is a tsunami?

A tsunami is a natural disaster caused by multiple waves in water bodies that send large volumes of water inland.

The sudden displacement of water with a large force destroys lives and properties on land, especially the coastal lands.

Thus, one of the surest effects of tsunamis is death.

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How could a scientist use the scientific method to learn more about the Cretaceous era?

Answers

First, it is necessary that this scientist decide on what point of the Cretaceous period he wants to study. Among several points he may want to study the evolution of microorganisms of that time, the life of a dinosaur species, or the evolution of dinosaurs, the flora that was established during this period, among others. This is the phase of the scientific method called Observation.

After that, he must enter the phase called "Elaboration of hypotheses" where he will raise questions about the point he decided to study. "How many flower species existed in that period?", "How many of these flowers can we observe today?" among others.

After that, he will enter the phase called "Experimentation", where he will establish a type of experiment and all the experimental factors and variables that will allow the hypotheses to be answered.

After the experiment he will collect the data that will be analyzed and that will give results that will answer the hypotheses previously established. This is the phase called "Analysis of the results".

At that moment, he will be able to reach the last phase of the scientific method, the phase called "conclusion", where he will show the conclusions that the experiment allowed to be established.

The Cretaceous period was a prehistoric period that took place between about 140 and 60 million years ago. If a scientist wanted to use the scientific method to learn more about this time, he should implement the following steps:

Identify an unresolved issue or problem that you would like to address. Make a hypothesis that raises answers to these questions or problems. Carry out a series of investigations and experiments dedicated to verifying the hypotheses raised. Finally, having verified the hypotheses, propose a law or rule for the investigated questions.

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Importance of freezing stem cells in South Africa?

Answers

Answer:

Stem cells are special cells found in the human body which has the ability to change into different cell types and functions.

They are expensive in South Africa and are freezing the stem cells helps in the preservation of the cells for research works in the medicine. They are also used in the treatment of different illnesses which requires cells and tissue transplants.

Which of the following shows steps that happen to the chromosomes in Meiosis in the correct order?

Answers

Answer:

Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.

Which of the following correctly describes connective tissue? made of electrically charged cells that send messages made of cells that are separated by a nonliving matrix made of sheets of cells that are tightly joined together and attached to a basement membrane made of cells capable of contraction

Answers

Answer:

the answer is D

Explanation:

I hope this helps


Which amino acid chain will be formed by the codons shown below?
AAG AGA UGU
Messenger
Second base in codon
RNA Codons U
C
G
UUU
Phe
JUCU UAU
UUC
JUGU
UCC UAC TYT
UGC Су.
с
UUA
UUG
UAG StolUGG TPG
CUU
CCU CAU CGU
CUC
ССС CAC
His
CGC
Lou Pro
CUA CCA
Ical
CGA
Ang
CUG
Gin
CCG
CAG CGG
AUU ACU TAAU AGU
As
AUCH ACC
Ser
AGC
AAC
А
Thr
AUA IACA IAAA
IMA Lys
AGA
AUGACG
Ang
AAG
AGO
GUU IGCUS TGAU GGU
GUC GCC GAC
Asp
GGC
G
Val Ala
Gy
GUA GCA GAA GGA
GUG
IGCG
Glu
GGG
OGAN
С
Third base in codon
GAG
O A. Asn-Ser-Cys
O B. Lys-Ser-Cys
10
O C. Asn-Arg-Cys
O D. Lys-Arg-Cys

Answers

Answer:

the answer is d. lys-arg-cys

Aside from being a good marksman, what is the key to making a clean kill?
A
luck
B
patience
C
range
D
weather

Answers

Answer:

C. range

Explanation:

Being a good marksman requires a very good range of whatever target you intends to shoot.

Explain what igneous rock is

Answers

Explanation:

Igneous rock is formed through the cooling and solidification of magma or lava.

Answer:Igneous rock is which is also called magmatic rock is the rock formed when hot,molten rocks crystallizes and solidifies.

Explanation:

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