Which statement best describes the function of the
respiratory passageways of a human?
A) They permit digestive end-products to make
contact with body cells.
B) They permit exchange between the external
atmosphere and the circulatory system.
C) They transport gaseous cellular wastes from
body cells to the lungs for excretion.
D) They regulate the amount of ammonia and salt
dissolved in body fluids.

Answers

Answer 1
B) They permit exchange between the external atmosphere and the circulatory system.

Related Questions

Based on the diagram above, which organism will have the greatest physical difference from its ancestor?
a) birds (b) lobsters (c) perch (d) mammals

Answers

I believe it’s b lobsters

Which statement describes renewable resources?

Answers

Answer:

What are our options? What are the possible answers?

What are the options????????

Why insects are the most diverse animals that live in all habitats?​

Answers

insects has a broad range of species and they are able to easily adapt according to their surroundings, hence increasing their survivability rate

When do light independent reactions occur

Answers

Answer:

Light-independent reactions are carried out in three steps, termed Calvin cycle collectively: carbon fixation, reduction reactions and 1,5-bisphosphate (RuBP) ribulosis. Even if the "dark" reactions are called, the Calvin cycle actually does not occur in the dark or at night.

Explanation:

Answer is above

Hope this helps.

Answer:

Light-independent reactions take place in plant chloroplasts. In this process, sugars are made from carbon dioxide.

Explanation:

what type of unit is unit of speed?

Answers

Answer:

the correct answer is The SI unit of speed is metre per second, but the most common unit of speed in everyday usage is kilometre per hour or, in the US and the UK, miles per hour.

Explanation:

I glad to help you!!!!!!!!!!

Answer: the and is M/S

Explanation:

Identify the point where the common ancestor of the fly and spider would be located.

Answers

Answer:

The common ancestor of the fly and spider would be located in the closest where B and C converge.

Explanation:

In phylogenetic trees, two species are more related if they have a recent common ancestor. On the other hand, two species will be less related if their common ancestor is not a recent one and is located far away in the tree.  

In the phylogenetic tree, the taxonomic groups of interest are located in the extremes of the lines called branches. In the present example, the fly and the spider are the species located in the extreme of the branches. The ramification point, which is also called "node" or divergence point, represents the location of the most recent common ancestor.

In the example, the point where the branches B and C get united, is the place where their common ancestor is located.      

The red point in the attached file "tree1" shows you where it is located the common ancestor of the two species.                      

The air we inhale contains less than 1% carbon dioxide.
Approximately what percentage of carbon dioxide is there in the air we
exhale?
A) 1%
B) 4%
C) 16%
D 20%

Answers

Answer:

B.4%

Explanation:

Why are food regations important

Answers

They are important because so people do not get sickness

Answer:

The general purposes of U.S. food law are to minimize the risk of unsafe food (it is too costly to assure that food is safe).

Explanation:

Food safety standards and regulations are essential to ensure food is safe at all points along supply chains in both international trade and within nations.

which part of the body contains enzymes that break down starch into sugar

Answers

It can start in the mouth with amylase, which is found inside the salivary glands, pancreas, and small intestine.

Answer:

In the human body, amylase is predominantly produced by the salivary glands and the pancreas. Although salivary and pancreatic amylases are similar, they are encoded by different genes (AMY1 and AMY2, respectively) and show different levels of activity against starches of various origins [10].

Explanation:

Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the disease, and about half of his sons will have the disease. Which macromolecule is involved in how hemophilia is passed from parents to their children? carbohydrate lipid nucleic acid protein

Answers

Answer:

nucleic acids

Explanation:

Nucleic acid is involved in how hemophilia is passed from parents to their children.

What is nucliec acid?

Nucleic acids are large biomolecules that play essential roles in all cells and viruses. Nucleic acids are the main information-carrying molecules of the cell, and, by directing the process of protein synthesis, they determine the inherited characteristics of every living thing.

A major function of nucleic acids involves the storage and expression of genomic information. Deoxyribonucleic acid, or DNA, encodes the information cells need to make proteins.

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What does semi-permeable mean in a relation to cell membranes?

Answers

Answer:

Cell membrane is also called as semi permeable membrane.

Explanation:

It allows some chemical compounds to pass through and stops the other from their entry.

Pls give meh a good explanation
what is the major difference between primary and secondary succession

Answers

Explanation:

Primary succession occurs when a habitat that has completely destroyed reheals from complete scratch

On the other hand, secondary succession occurs when only a portion of the original ecosystem survives and is rebuilt from that

Which molecule allows a blade of grass to stand straight?

Answers

Answer: water molecules

Explanation: grass cells through osmosis becomes turgid making them stand

What is the role of the MCR1 gene in determining a populations fitness for survival

Answers

What are the multiple options?

Which term describes the chromosomal abnormality of having three copies of a single chromosome? haploidy diploidy trisomy tetrasomy

Answers

Answer:

trisomy

Explanation:

The prefix tri- means three

The prefix di-means two

The prefix tetra- means four

Answer:

The answer is Trisomy.

Explanation:

The word "Tri-" means having three times the single amount of something.

How many atoms make up a whale?

Answers

16747400 celle they permit exchange between the external atmosphere and the circulatory system

A gene may be described as

Answers

Answer:

The correct answer for the fill in the blank is - A sequence of bases on the DNA that codes for a trait.

Gene is described as a segment of DNA ( deoxyribonucleic acid) that codes for a particular protein, which in turn corresponds to a trait/ characteristic of the living organism.

Gene is first transcribed into mRNA ( messenger RNA) through a process called transcription. mRNA is then converted into protein through a process called translation.

The protein thus formed corresponds to a particular trait ( like eye color, hair color).

i hope this helps

Please help with this

Answers

I am not exactly sure but I would gn with protein because DNA does not look like that is how the cell is so maybe protein or starch

This part of the nervous system regulates involuntary actions such as
heart function, blood pressure, breathing, digestion.

Answers

Autonomic nervous system is the correct answer.

I had a biology exam earlier this morning with this question.

The autonomic nervous system (ANS) is in charge of controlling involuntary processes such as digestion, respiration, blood pressure, and heartbeat. The sympathetic and parasympathetic nervous systems make up its two divisions.

Through the "fight or flight" response, the sympathetic nervous system prepares the body for emergency situations. It speeds up the heartbeat, constricts blood vessels, widens the airways and releases stress hormones. These responses improve physical ability and preparedness for potential threats.

In contrast, the parasympathetic nervous system encourages relaxation and energy conservation through the "rest and digest" response. It promotes digestion, lowers heart rate, and promotes restorative and recovery processes.

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Since all living things on Earth share the same universal code in DNA and RNA molecules, which of the following is most likely true ?

Answers

Answer:

where are the answers?

for each of the following organisms, describe how digested food reaches their body cells: a hibiscus plant, a paramesium, a coral polyp, an earthworm, a mosquito a human ​

Answers

Answer:

Hibiscus plant: transported by the phloem

Paramecium: simple diffusion from the food vacuole into the cytoplasm

Coral polyp: diffusion from the gut to the body cells

Earthworm: transport through the blood

Mosquito: transport through the blood

Humans: transport through the blood

Explanation:

Digestion involves both mechanical and chemical processes to break up

food into smaller or simpler constituent parts that can be absorbed by the body.

Digestion is divided into external digestion and internal digestion.

External digestion involves digestion of food outside the body using digestion enzymes and then absorption into the body by diffusion.

Internal digestion is when food is ingested into the body, broken down by Digestive enzymes and juices and then absorbed into the body cells.

A hibiscus plant stores it's food as starch. When the stored food is needed, it hydrolyses starch into molecules small enough to pass through the cell membrane. The hydrolysed food molecules are then transported by the phloem to cells that need them for energy production.

A paramecium is a protist which feeds by endocytosis, i.e. sorrounding and digesting food in its food vacuole. The digested food diffuses through the cell

cytoplasm and mitochondria oxidise it to produce ATP.

A coral polyp is a marine invertebrate belonging to the phylum Cnidaria.

Cnidarians have a simple sac-like gut, with only one opening and one unspecialised gut chamber.

They do not have a circulatory system to deliver nutrients to the cells, instead digested food diffuses from the gut to the body cells.

An earthworm is an annelid and carries out internal digestion. Food taken in from the mouth is digested and absorbed by the intestines into the blood. The blood then carries the absorbed food to the earthworm’s body cells.

Mosquitoes both male and female feed on sap and nectar, aphid honeydew, and plant juices, but in many species the mouthparts of the females are adapted for feeding on the blood of other organisms.

Food taken in by the mosquito is digested in the mid-gut by digestive enzymes. The blood absorbs digested food from the mid- gut and carries it to its body cells.

In Humans, digested food molecules are absorbed in the small intestine into our bloodstream. The blood then carried digested food molecules around the body to the cells where they are needed.

1. What is venation ?
2. What are autotrophe ?
3. What does plant require to cook food for itself ?

Please help me asap !! ​

Answers

Answer:

1. Arrangement of veins in a lamina is called venation.

2. All green plants have the capability to prepare their own food and are called autotrophe .

3. Plants Require :

WaterCarbon DioxideChlorophyllEnergy( From Sunlight)

Explanation:

Hope it helps out !!

What step would likely be affected if the bacteria are exposed to this antibiotic

Answers

Answer:

bacteria subjected to an antibiotics will have their ribosomes inhibited whixh will stop them from synthezing proteins which stops the possibility of reproduction and many other vital functions.

what are the different types of natural selection

Answers

Answer:

Types of Natural Selection:

Directional selection

Stabilizing selection

Disruptive or Diversifying selection

Kin selection

Sexual selection

Explanation:

What is the function of the start codon of an mRNA sequence? A. The start codon protects the mRNA from being degraded. B. The start codon acts as a checkpoint in the eukaryotic cell cycle. C. The start codon signals for the ribosome to release the mRNA sequence. D. The start codon signals for the ribosome to begin assembling amino acids at that point in the mRNA sequence. Mark for review (Will be highlighted on the review page)

Answers

Answer:

It's D

Explanation:

The start codon signals for the risbosome to begin reassembling amino acids  at the point in the mRNA

Answer:

The start codon signals for the ribosome to begin assembling amino acids at that point in the mRNA sequence.

Explanation:

Is Earths global mean temperature changing? explain your answer the words TREND and FLUCTUATION.

Answers

Answer:

Yes the Earths golbal mean temperature is changing.

Explanation:

The global temperature record represents an average over the entire surface of the planet. The temperatures we experience locally and in short periods can fluctuate significantly due to predictable cyclical events (night and day, summer and winter) and hard-to-predict wind and precipitation patterns. The strong warming trend of the past four decades likely reflects a shift from comparable aerosol and greenhouse gas effects to a predominance of greenhouse gases, as aerosols were curbed by pollution controls, according to former GISS director Jim Hansen.

You used blank to inderiectly find the blank of the objects

Answers

Answer:

Explanation:

Ur question is not completed..

??

Habitat destruction is very often the result of

Answers

Answer:

Habitat destruction (land use) that results from the expansion of human population. ... Threats to habitat in decreasing order of importance. Agriculture (38%), commercial devlop., water projects, outdoor rec., livestock grazing, pollution, infrastructure/roads, disruption of fire, and logging (12%)

Explanation:

Answer:

Logging,Over fishing,Hunting,and clearing areas

Explanation:

The activity of human is the primary cause e.g logging and hunting

what process carried out by microorganisms in the carbon cycle releases carbon dioxide into the atmosphere

Answers

Answer: cellular respiration

Explanation:

how can you prevent transmission of cholera from a patient to a healthy person?

Answers

Description:

To prevent transmission of cholera from a patient to a healthy person you should use safe water meaning clean water. Wash your hands with clean water with soap. Also cook food well mostly see food including fish

Answer:

Use safe water

Wash your hands with soap and clean water

Cook well mostly see food including fish

Please mark brainliest

Hope this helps.

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