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
Monica [59]
3 years ago
11

PLEASE ANSWER QUICKLY

Biology
1 answer:
Assoli18 [71]3 years ago
5 0

Answer:

i did this

Explanation:

You might be interested in
Which life cycle describes a plant that reproduces asexually and sexually? A. egg + sperm → embryo → adult with all its chromoso
Minchanka [31]
Life cycle describes a plant that reprodueces asexually and sexually.
4 0
3 years ago
The best way to maintain balance of pests in an ecosystem is to do what?
Greeley [361]

Answer:

i will say D....

Explanation:

3 0
3 years ago
What part of a fish helps it rise?Help ASAP​
8_murik_8 [283]
They use a internal pouch which is named swim bladder.




Explanation; Oxygen will enter a fish’s mouth, and passes through their gills. The oxygen will be taken and gets carried by hemoglobin through their bloodstream. Hemoglobin will take out some of the oxygen into their swim bladder. The amount of oxygen will show if they will sink or rise. Your question is how do they rise. If he goes up too much, the meaning of this is when the gas diffuses into their blood and out the gills.




Got this from a writing, but rephrased it.
3 0
3 years ago
Read 2 more answers
Which claim is best supported by the information about scales and feathers?​
alexandr402 [8]

<u>Answer:</u>

Recent evidence suggest that feathers evolved from scales and suggest that 'feathers and pycnofibers' could be homologous.

<u>Explanation:</u>

  • One of the major difficult issue related to bird evolution is the evolution of feathers.
  • Feathers are considered as the most 'complex integumentary structures' which are found in vertebrates.
  • Evolutionary developmental biology suggests that the 'planar scale structure' is been modified for developing into feathers by 'splitting' to form web like structures.
  • Scales and Feathers consist of 'two distinct form of keratin' so it was thought that 'each type was exclusive skin structure' but recent study suggests that they are developmental expressions of same skin structures.
4 0
3 years ago
Scurvy is a disease that until the nineteenth century was common among sailors and others whose diets were deficient in vitamin
alina1380 [7]
<h2>Scurvy </h2>

Explanation:

(a) Collagen is the major structural component of cartilage,bones and tendons

  • The basic unit of collagen is tropocollagen and each tropocollagen consists of three coiled left handed polypeptide chains called α chains
  • Generally each α chain consists of a repeating tripeptide sequence called: G-X-Y
  • Here G represents glycine; X represents proline and Y represents hydroxyproline
  • Rigidity of collagen molecule is due to presence of proline and hydroxyproline
  • Hydroxylation of proline is catalysed by prolyl hydroxylase enzyme which use ascorbate,α ketoglutarate and oxygen
  • α ketoglutarate is oxidatively decarboxylated to form carbon dioxide and succinate
  • Sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues includes: tissue levels of ascorbic acid is low;  enzyme prolyl hydroxylase is inactive;  proline is not hydroxylated;  the triple helix is inadequately stabilized; collagen breaks down;  defects in tissues that depend on collagen ; tissues that depend on collagen are subject to breakdown and bruising

(b) Sailors are no longer susceptible to scurvy because fresh fruits which are the source of vitamin C source are available now

British sailors called "limeys" to this day,this term reflects the British navy's use of limes

5 0
3 years ago
Other questions:
  • what do I do in a situation where my mother let me use he credit card and then mad me mad and when I tried to give it back to he
    5·2 answers
  • What is the nature of "second signal molecules" in signaling pathways?
    8·1 answer
  • Explain the problem if too much nitrogen enters an aquatic ecosystem
    13·1 answer
  • If an analogy were to be made between the function of different cell organelles and the services provided by different companies
    14·1 answer
  • Please help!
    10·1 answer
  • This statement describes the Maya's opinion of animals, based on the Popol Vuh.
    13·2 answers
  • Plz help me outttttt
    13·2 answers
  • He ________ is located deep within the brain, and it includes structures such as the substantia nigra and ventral tegmental area
    8·1 answer
  • Solve for x: 3 − (2x − 5) &lt; −4(x + 2)
    13·2 answers
  • What structure encloses almost all bacteria? Do bacteria have a structure that encloses the genetic material?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!