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
Sonbull [250]
2 years ago
7

Cells lining the human respiratory tract have projections that help keep the passageway clean, moving debris and mucus up and ou

t. These cellular projections are A) cilia. B) flagella. C) microtubules. D) pseudopodia.
Biology
2 answers:
Bad White [126]2 years ago
6 0

Answer:

The correct answer to the question: Cells lining the human respiratory tract have projections that help keep the passageway clean, moving debris and mucus up and out. These cellular projections are:__, would be, A: Cilia.

Explanation:

The human respiratory system is not just a set of tubes, and a pair of lungs, where the exchange of gases for life, takes place. Because air carries with it much more than just gases, like oxygen, but it also carries microorganisms, and damaging particles, the respiratory system has in place a series of physiological, and organic mechanisms, to protect us from these damaging elements in air. One such protection lines are the projections present in the cells that are present all along the linings of the respiratory tubes. These projections are like small hairs, that constantly move like a brush, to remove elements from the air that should not be present in the lungs. These brush-like projections are called cilia.

KiRa [710]2 years ago
3 0
The answer to this question is A) Cilia
You might be interested in
What is the basic unit of structure and function in plants, animals, and bacteria?
padilas [110]

Answer:

The cell is the basic structural and functional unit of life. Cells are independent, single-celled organisms that take in nutrients, excrete wastes, detect and respond to their environment, move, breathe, grow, and reproduce.

lil more info

What is the basic unit of structure and function in plants and animals?

Cell Theory !

All living things are made of cells. The cell is the basic unit of structure and function in all living things.

Can i have brainlist?

4 0
2 years ago
Match the staining techniques with their purpose.
Dennis_Churaev [7]

A Negative stain such as India ink or Congo red-Look for the presence of a capsule.

This stain method is usually used to stain the area around the microorganism.

B The Gram stain-Divide bacteria into two groups based on cell wall structure (thick vs. thin).  

This is type of differential staining used to distinguish organisms based on their staining properties. Gram + and Gram- bacteria stain different because of different cell wall structure.

C The Ziehl-Neelsen Acid-fast stain- Identify bacteria with waxy cell walls such as: Mycobacterium tuberculosis (the cause of TB).  

This is also differential staining method which uses heat and phenol to derive dye into the cells with lipid-rich walls.

D Simple stain with a basic dye-Stain microbes a bright color to make it easier to see them in bright field microscopy.

One dye is used in simple staining in order to determinate the size, shape and arrangement of the cells.

E The Schaeffer-Fulton Endospore stain-Identify Bacillus or Clostridium species, such as the causative agents of anthrax, botulism, tetanus and gangrene.  

This is a special type of staining only used for the bacteria that can form endospores. Bacteria are first treated with heat and then with malachite green, which is very strong stain that can penetrate endospores.

5 0
3 years ago
A scientist observes some cells under a compound microscope and needs to determine if they are bacteria or yeast. Aside from siz
MAXImum [283]

Answer:

chitin and murein

Explanation:

The chemical compounds that distinguish bacteria cell from yeast cell are  

chitin and murein

Chitin is a polysaccharide present in the exoskeleton of fungi made up of chains of modified glucose known as N-acetylglucosamine. N-acetylglucosamine is derived from glucose

While murein is a mesh like structure made up of sugar and amino acids. Murein forms a layer outside the plasma membrane of bacterial cell.  

8 0
3 years ago
Read 2 more answers
Anybody help me please? please? the teacher just want the work from me please? I will brainliest...
QveST [7]

Answer:

ok

Explanation:

What is the question. Let see if I can try

8 0
2 years ago
Sensations of body position, touch, skin temperature, and pain are referred to as ____.â
Agata [3.3K]

<span>The answer is general senses. These are the senses which are professed by reason of the receptors distributed all over the body such as temperature, touch, and starvation, instead of knotted to a particular structure, like the special senses - sight or hearing.</span>

8 0
3 years ago
Other questions:
  • Where is CO2 reduced during the calvin cycle reactions
    7·1 answer
  • Based on the scientific name streptococcus agalactiae, what morphology would you expect these cells to have? g
    7·1 answer
  • What are some medicinal items from plants?
    15·1 answer
  • At rest, a cell membrane is said to be ___________.
    9·1 answer
  • Why does an egg change color and texture when heated? Its proteins reorder their sequence of amino acids. Its pH increases, whic
    12·1 answer
  • Where should reactions involving the evolution of toxic gases be performed?
    11·1 answer
  • 2) DNA polymerase has a subunit with exonuclease activity. What does this subunit do?
    6·1 answer
  • What is an advantage of digital learning?
    6·2 answers
  • What part on a human has a membrane
    7·1 answer
  • CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!