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
yan [13]
3 years ago
13

The first line of defense involves which structure(s)?

Biology
1 answer:
Agata [3.3K]3 years ago
5 0

Answer:

skin

Explanation:

The skin is vital for our general health and well-being. In addition to acting as the body's first line of defense against bacteria and viruses, healthy skin also maintains fluid balance and helps regulate body temperature. She is very sensitive, she recognizes the slightest touch as well as pain.

As an outer layer that we can see and touch, the epidermis protects us from toxins, bacteria, and fluid loss. It consists of 5 sublayers of keratinocyte cells. These cells, produced in the deepest inner, basal layer, migrate to the surface of the skin. As they do so, they mature and go through a series of changes.

You might be interested in
During the Devonian period of Gondwanaland what were the two organisms that thrived?
gulaghasi [49]

Answer:

about the Trilobites is =Trilobites ( /ˈtraɪləˌbaɪt, ˈtrɪ-, -loʊ-/;[4][5] meaning "three lobes") are a group of extinct marine artiopodan arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (521 million years ago), and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 300 million years.[6] . and about the algae is =Algae (/ˈældʒi, ˈælɡi/; singular alga /ˈælɡə/) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to 50 metres (160 ft) in length. Most are aquatic and autotrophic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem, which are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of green algae which includes, for example, Spirogyra and stoneworts.

Explanation:

5 0
3 years ago
TRNA molecules deliver amino acids to ribosomes where the amino acid next
lesantik [10]

Answer:

tRNA molecules deliver amino acids to ribosomes where the amino acid next becomes an anticodon (option C).

Explanation:

A tRNA molecule is able to deliver amino acids to the ribosomes for protein synthesis, forming an anticodon that complements the codon of the mRNA being translated. The mRNA molecules are responsible for conducting the genetic code —obtained from DNA transcription— to be translated by the ribosomes. This code is established by sequences of three nucleotides, called codons, which encode different amino acids.

What happens when mRNA molecules expose codons to ribosomes is that a tRNA molecule containing a complementary anticodon is formed, which is conducted to the ribosome to bind to the codon. This allows, according to the genetic code, the formation of a protein with a specific sequence of amino acids.

6 0
3 years ago
This macromolecule assists with short term energy and stores energy. Which description
DENIUS [597]

Answer:

A

Explanation: Lipids are used for short term energy and stores energy.

Lipids are made up of fatty acids.

3 0
2 years ago
Which threat is a current danger to cheetahs as a species? A. too little available food B. climate that is becoming rapidly cold
Ray Of Light [21]

Answer:

the answer is D.  lack of genetic variation

Explanation:

7 0
3 years ago
Read 2 more answers
Where does the frog have the largest muscles and why?
V125BC [204]
The large muscles, especially in their jaws helps to extend their tongue to catch, gather, and consume their prey (food).

Hope that helps! xD
3 0
3 years ago
Read 2 more answers
Other questions:
  • What happens to soil when rain forest is cut down?
    10·1 answer
  • BRAINIEST TO FIRST ONE TO ANSWER ASAP AND RIGHT REMEMBER ASAP 57 POINTS!!!!!!!!!!!!!!!!!!!!!!!
    13·2 answers
  • What is the original source of energy for most living organisms?
    6·1 answer
  • Which plant-cell organelle supports and maintains the cell's shape and protects the cell Consider this plant cell. The organelle
    15·1 answer
  • a group of scientists is studying the internal parts of the cell. Which microscope is most appropriate for these scientists to u
    14·2 answers
  • 5. Florida boa constrictors are invasive top predators. How does the boa constrictor negatively impact species in the tertiary t
    10·1 answer
  • Hello please help i’ll give brainliest
    9·2 answers
  • Knowing how food choices impact the function and productivity of cells, why do you think it is important to maintain a healthy d
    11·1 answer
  • What can you state about the orbits of the various planets​
    9·1 answer
  • Which phrase describes a density-independent limiting factor that can affect
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!