1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VikaD [51]
3 years ago
11

How does oxygen move from the respiratory system to the circulatory

Biology
1 answer:
slamgirl [31]3 years ago
8 0

Answer:

D. By diffusion across a capillary wall

Explanation:

D is the best answer because gas exchange takes place in our lungs. Our lungs have alveoli which have a network of tiny blood vessels called capillaries, here the O2 diffuses the capillary wall to enter the bloodstream, and similarly CO2 diffuses out and we exhale it our from our lungs.

You might be interested in
Which of the following does NOT characterize proteins?
8090 [49]

Answer:

The answer is C) They appear to be the molecular carriers of coded hereditary information.

Explanation:

Why NOT C) They appear to be the molecular carriers of coded hereditary information?

This is the job of the nucleic acids. It is composed of nucleotides which are the basic units of DNA and RNA. They carry genetic information about a certain organism.

<h3 /><h3>True of proteins:</h3>

A) They may be denatured or coagulated by heat or acidity.

<u>Denaturation</u> is the <u>destruction of the protein's secondary and/or tertiary structures</u>. The <u>primary structure is not disrupted due to the tough peptide bonds</u> and can only be broken down by acid. For heat denaturation, hydrogen bonds are destroyed, as in cooking of egg whites and medical equipment sterilization.

B) They have both functional and structural roles in the body.

There are many kinds of proteins that have functional and structural roles like hormones <u>(FSH, LH)</u>, antibodies <u>(IgA, IgM),</u> enzymes <u>(lipase, amylase),</u> for storage/transport <u>(hemoglobin, ferritin)</u>, and locomotion <u>(actin, troponin).</u>

D) Their function depends on their three-dimensional shape.

Just like <u>hemoglobin</u>, it's <u>quaternary structure</u> can carry <u>4 molecules of iron</u> in one go. <u>Enzymes</u> are shaped accordingly to fit a<u> specific substrate</u> <em>(lock-and-key model)</em>

6 0
3 years ago
A protein is composed of a sequence of chemicals, a long string of building blocks called ______. genes DNA RNA amino acids
natali 33 [55]

Answer:

a

Explanation:

6 0
3 years ago
Jimmy is riding in his car to the office. It is snowing heavily and he can see frost forming on the windowpane. Which type of wa
aniked [119]
I believe it is condensation! GOOD LUCK! :)
4 0
3 years ago
Read 2 more answers
Spores produced by the small male cone of a pine tree are produced by : meiosis or mitosis
Maru [420]
Meiosis. The process typically starts out as mitosis but since spore are haploid, the end result is from meiosis.
3 0
3 years ago
As blood glucose returns to its baseline level, what happens to the levels of insulin and glucagon in the blood
Otrada [13]
As blood glucose returns to its baseline level, the levels of insulin and glucagon in the blood will stabilize. As the blood glucose levels begin to drop below the base line, the concentration of glucagon hormone increases.  while as the blood sugar levels increases above the baseline, the level of insulin hormones increases. Insulin and glucagon work antagonistically to maintain the normal level of glucose in the blood. 
5 0
3 years ago
Read 2 more answers
Other questions:
  • Question 4 a high-protein diet has been linked to a lower risk of heart disease.
    13·1 answer
  • Mr. r's beta-thalassemia is causing him to destroy his red blood cells too rapidly. let's review the red blood cell life cycle a
    7·1 answer
  • Help please I really don’t understand
    6·1 answer
  • Many conditions other than those that attack the brain tissue directly can also produce symptoms of neurocognitive disorder. The
    9·1 answer
  • Bacteriophage t4 can adsorb to its host because of binding sites in its tail fibers that recognize areas of the e. Coli cell wal
    12·1 answer
  • Which of the following is a community?
    10·2 answers
  • HELP PLEASE I GIVE YOU BRAINLIEST I NEED HELP WITH 2
    13·1 answer
  • The fact that all organisms share some basic features and life processes is used by biologists to explain the idea that all life
    8·2 answers
  • The term endosymbiosis can be broken down into parts. Endo- means “within.” What is another term you have heard that starts with
    5·1 answer
  • Digestion of nutrients begins in varying places. For carbohydrates it begins in the ________, for proteins in the _____ and for
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!