Are there any parts of the human body that get oxygen directly from the air and not from the blood?

Answers

Answer 1

Answer:

The Cornea

is the answer


Related Questions

2. What are the two major subdivisions of the nervous system, and what does each division do?

Answers

Answer:

2 Major Subdivisions:

Central Nervous System

Peripheral Nervous System

Explanation:

The central nervous system (CNS) regulates the majority of bodily and mental activities. It is divided into two parts: the brain and the spinal cord. The brain is the core of our ideas, the translator of our surroundings, and the source of control over physical action.

The PNS is the nerve that links the CNS to the rest of the body. The peripheral nervous system's principal job is to link the brain and spinal cord to the rest of the body and the outside world. The peripheral nervous system sends and receives information to and from the central nervous system. This is done by neurons that convey information from sensory receptors in the eyes, ears, skin, nose, and tongue, as well as stretch receptors and nociceptors in muscles, glands, and other internal organs.

ocean acidification impacts are:
1.
2.
3.
4.

Answers

Explanation:

In the 200-plus years since the industrial revolution began,concentration of carbon dioxide in the atmosphere has increased due to human actions.During this time,the pH of surface ocean waters has fallen by 0.1 pH units.This might not sound like much,but the pH scale is logarithmic,so this change represents approximately a 30 percent increase in acidility.

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Summarize the relationship between DNA,
genes, and chromosome

Answers

DNA is in the chromosome… DNA displays the gene

One division of a cell → two identical, diploid (2n) cells.
Diploid: _______ Cell with sets of chromosomes.​

Answers

Answer: Daughter Cell

Explanation: Not one hundred percent sure this is the answer because there’s no context but the phrase Daughter Cell is used to describe two newly created cells from mitosis.

Label the following with
N (neutron), P (proton),
E (electron)
___Negative charge
___ Atomic number ___determination
___ Atomic mass determination
___ Involved in bonding
___ Positive charge
___ when gained or lost creates ions
___ Neutral charge
___ Found in nucleus

Answers

Answer:

E, P, N and P, E, P, E, N, N and P

Explanation:

I am pretty sure the answers would go like this (in the order you have here):

1. Electron (they have a negative charge)

2. P (The atomic number is determined by the number of protons)

3. N and P (The atomic mass is determined by how many Neutrons and Protons there are in the atom)

4. Electron (they are usually involved in bonding)

5. Proton (they have positive charge)

6. Electron (ions are created when an atom has gained or lost electrons)

7. Neutron (they are neutral)

8. Both Neutrons and Protons (they stick together inside the nucleus)

I am not entirely sure why the atomic number determination has 2 blanks since it is only determined by protons, but I hope this helps. I havent studied this for a while but those are the best answers I can provide and have checked them with my books so I hope they are correct. Good Luck!

Dragon

the anterior pituitary hormone that controls the release of glucocorticoids from the adrenal cortex is __________.

Answers

Answer:

Adrenocorticotropic Hormone (ACTH)

Explanation:

Explanation:

Adrenocorticotropic hormone (ACTH)

Which of the statements agrees with the base pairing rules in a DNA strands

Answers

Answer:

the offspring of two parents will have 50 percent of his or her gene's from their mother and the other 50 from their father and the gene's will determine what the child will have like the eye color and hair color shape of their nose and other things that are inherited

Explanation:

how do monosaccharides combine to form polysaccharides

Answers

Through condensation reactions

what is the cell wall function and factory part or worker?

Answers

Answer:

Major cell parts function just like the structures and people who work together in a factory. Cells have strong cell walls and a cytoskeleton to keep their shape; the walls are made of fiber for protection just like a factory building has sturdy walls for support.

The cell wall serves as a protective and structural layer surrounding plant, fungal, and bacterial cells. It provides rigidity, support, and defense against external pressures and pathogens.

In various species, the cell wall serves as a robust outer layer. Its primary component in plants is cellulose, which helps to preserve cell structure, limit excessive water absorption, and promote growth. Chitin is found in the cell wall of fungi, providing both structural integrity and protection.

Bacteria have a variety of cell wall compositions; peptidoglycan, for example, is an essential part of many bacterial cell walls. Along with other cellular components, this "factory-like" part of the cell performs its functions. It is comparable to a factory's base, supporting the cell's framework, and worker, guarding against threats and preserving the cell's overall operation.

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We would expect cells found in the active muscles of animals to contain relatively large amounts of which cellular organelle? A) centrioles B) mitochondria Eliminate C) lysosome D) nuclei

Answers

Answer: B.) Mitochondria

Explanation:

what are the advantages of using an electron transport chain

Answers

Answer: The advantages of electron transport chains are directed

towards living things. Electron transport chains permit the cell to take energy from harvesting electrons .

Explanation: Read above.

Which of the following cognitive skills have not been displayed by animals? A. Using tools B. Forming concepts C. Transmitting culture D. Using syntax.

Answers

A cognitive skill which have not been displayed by animals is: D. Using syntax.

A cognitive skill is also referred to as cognitive ability and it can be defined as a brain-based skill that is required by a living organism for the manipulation of information, acquisition of knowledge, reasoning and performance of various tasks from the simplest to the most complex.

Some examples of the cognitive skills that have been displayed by animals include the following:

The use of tools.The transmission of culture.The formation of concepts.

However, animals do not speak words or have a spoken language and as such they do not have the cognitive skill to use syntax.

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Answer:

It’s D

Explanation:

On edge 2022

During fertilization, each haploid ____________ contains the entire genetic contribution from one of the two parents.

Answers

During fertilization each haploid gamete

which system is responsible for preventing pathogens from disturbing homeostasis?

Answers

Answer:

The immune system protects the host from pathogenic organisms (bacteria, viruses, fungi, parasites). To deal with this array of threats, the immune system has evolved to include a myriad of specialised cell types, communicating molecules and functional responses.

Explanation:

What are macromolecules that contain carbon, hydrogen, oxygen, and nitrogen, needed by the body for growth and repair?

Answers

Answer:

protein

Explanation:

A macromolecule that contains carbon, hydrogen, oxygen, and nitrogen, which is used by the body for growth and repair. Protein Synthesis.

This is a two-part process that ends in the assembly of proteins at the ribosomes within cells.

What do you call a substance with a pH of 6?

Answers

Answer:

i copied this i just hope it helps if not i dont know

Explanation:

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. ... Water with a pH of five is ten times more acidic than water having a pH of six. As this diagram shows, pH ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline

Plz help quickly I’ll mark

Answers

Answer:

Carbon Monoxide

Explanation:

I just took the test :)

Haven't Answered a Question lately So I'll ask
What are the top three fastest animals in the world?

Answers

Answer:

cheetah golden eagle white throated needletail Swift

First, is the Peregrine falcon, then the Golden eagle, and finally, the white throated needle tail swift.
1. Peregrine Falcon
2. Golden Eagle
3. White Throated Needle-tail sSwift

There is an error in the above model.
(a) What is this a model of? (2pts)
(b) Explain how you would change the model to make it correct? (2pts)

Answers

ATP hydrolysis is the lysis of the molecule mediated by water. It releases a phosphate group and energy. It is a reversible reaction. (a) Reversible ATP hydrolysis. (b) added energy on the left and released energy on the right.

   

------------------------

ATP is a significant molecule involved in many of the cellular metabolic routes. These metabolic processes can either form it or break it.

ATP provides energy to many different functions in the organism.

ATP means adenosine tri-phosphate. It is composed of adenosine (an adenine plus a ribose), and three phosphate groups.

Note: you can also find adenosine Diphosphate (two phosphates) and adenosine monophosphate (one phosphate).

Oxygens from the phosphate groups only have a single bond to phosphate (there are no hydrogen bonds).

These single bonds, known as phophoanhydrid bonds, have a negative charge and tend to repel each other, making the molecule unstable.

So phosphate groups repel each other, and a considerable amount of energy is applied to keep them united. So phophoanhydrid bonds are high energetic bonds.

The forces that keep the phosphate groups together accumulate potential energy.  

If these bonds are broken, part of this potential energy would be released.

When talking about breaking the molecule, we are referring to ATP hydrolysis. And the released energy is used in different cellular processes that require energy.

ATP Hydrolysis is the molecule lysis mediated by a water molecule.

                      ATP  +  H₂O   ⇄   ADP  +  Pi  +  Energy

Pi is the released inorganic phosphate group.

This is a reversible reaction, meaning that the ADP can go back to ATP.

                 ADP  +  Pi  +  Energy   ⇄   ATP  +  H₂O

(a) What is this a model of?

This model represents the reversible ATP hydrolysis.

In the superior part of the image, we can see an ATP molecule composed of adenine, ribose, and three phosphate groups. The yellow star behind represents the accumulated energy.

When ATP hydrolysis, it loses a phosphate group and part of the energy that was keeping this group in the molecule.

An ADP is composed after hydrolysis. We can see this molecule in the inferior area of the image.

ADP molecule is composed of adenine, ribose, and two phosphate groups.

Because hydrolysis is a reversible process, by adding a new phosphate inorganic group and energy, we can get a new ATP.

(b) Explain how you would change the model to make it correct?

What is wrong with this model is that instead of showing released energy during the hydrolysis process, it shows energy added to the reaction.

In the same way, instead of showing added energy to the reversible reaction, it shows released energy.

Added energy and released energy must be changed.

Added energy should be on the leftReleased energy should be on the right

---------------------------------

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Which of the following is NOT a human-caused reason that species go extinct?

a forest fire caused by lightning, which destroys a habitat

bringing in invasive species

cutting down a forest, which destroys a habitat

overhunting

Answers

A. A forest fire caused by lightning, which destroys a habitat
A !! forest fire caused by LIGHTNING, which destroys a habitat .. lightening isn’t from humans !

What is XX and XY? And which are their differences?

Answers

Answer:

chromosomes

Explanation:

the diefference is that one is combination of female genes and the other a combination of female with male genes

The abundance of sodium leak channels in skeletal muscle is ______ the abundance of sodium leak channels in a typical neuron.

Answers

The abundance of sodium channels in muscles is as important as the abundance of sodium leak channels in a typical neuron.

Sodium plays an essential role in the body, this includes important functions such as:

Intervening in the process of muscular contraction.Intervening in the process of interneural communication.

This is possible through sodium channels in cells that allow sodium to enter or leave the cell at very specific times and this causes specific reactions in cells.

In neurons: Sodium channels are abundant and essential because due to the action of sodium signals are passed from one neuron to others.In muscles: Sodium channels are abundant and essential, especially in skeletal muscles. The role is sodium is to contract or relax muscles, which makes movement possible.

Based on this, the presence of these channels in both neurons and skeletal muscles is equally important.

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Select ALL the correct arswers.
Which statements correctly describe mutations in gametes and mutations in somatic cells?
Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
Mutations to gametes are more likely to be beneficial than mutations to somatic cells.
Mutations to somatic cells will be inherited by an organism's offspring.
Mutations to gametes can be passed on to an organism's offspring
O Mutations to gametes do not involve changes in the DNA.
Mutations to somatic cells are transferred to daughter cells.

Answers

Answer:mutations to gametes can be passed on to an organism's offspring and mutations to somatic cells are only present in the type of cell in which the mutation occurred.

Explanation:The mutation in the somatic cells is known as somatic mutations. As they do not take place in the cells, which give rise to gametes, thus, the mutation is not inherited to the next generation by the sexual means.  

On the other hand, the genetic mutations take place in the germline cells, that is, egg and sperm, because of this the mutations possesses the tendency to get passed on from one generation to another.  

Thus, mutations are only passed on to offspring when they take place in germ cell DNA. The other kind of cells, the somatic cells refers to the rest of the cells in the body and mutations, which takes place in these cells do not get inherited further to the offspring.  

Hence, the correct statements are

As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands.

a. True
b. False

Answers

Answer:

As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands. This unwinding and separating of the DNA require three different types of proteins: helicase, topoisomerase, and single-strand binding proteins.

Explanation:

3 More Days Till Christmas

citer le type de mémoire perturbée par le T H C c,est un dm note reponse.​

Answers

hindi ko po gets sasagutan po ba yan

DNA and RNA are ______ that serve as templates that form proteins

Answers

Answer:

In the first step, the information in DNA is

transferred to a messenger RNA (mRNA)

molecule by way of a process called

transcription.... The mRNA sequence is

thus used as a template to assemble-in

order-the chain of amino acids that form a

protein.

A type of RNA that is called as ribonucleic acid type called as transfer RNA that is used for the production of the amino acid at a time and the protein assembly takes place at the ribosomes.

What is the role of DNA and RNA for the sake of protein synthesis ?

       

DNA are responsible for the providing out the code for the cell's activities and the RNA are responsible for providing out the service to make them proteins.

Each group of 3 bases in the  mRNA constitutes a codon and each codon is specifying  a particular type  of  amino acid. The mRNA sequence therefore used as a template to make the  assembly in order of the chain of amino acids which form a protein.

It is found that in all biological cells , usually occurs in cytoplasm of cell though its production takes place in nucleus. Whereas DNA is  providing the code for cell's activities and RNA is responsible for converting that code into proteins which carry various cellular functions.

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if a man with type ab blood marries a woman with type o blood, what blood types would you expect in their children

Answers

Answer: the child could be  A or B  blood type

a sea anemone can only travel at an average speed of 1.7 millimeters/minute. how many millimeters will it ravel in 3.5 minutes

Answers

Answer:

I belive your answer is 5.95

Explanation:

Question 8 of 10
The molecules that make up food contain energy. How does the human body
get energy from the food molecules?
A. By adding energy to the molecules
B. By breaking and reforming chemical bonds in the molecules
C. By using them to form ionic bonds
D. By combining the molecules together

Answers

Answer: B.) By breaking and reforming chemical bonds in the molecules.

Explanation:

how do false killer whales help mankind and nature!!!!!???????

NEED TO KNOW VERY SOON PLESE ANSWER SOON AND FAST

Answers

Whales play an important role in the marine ecosystem where they help provide at least half of the oxygen you breathe, and they also improve climate change. Hope that helps.

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