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
Some students believe that if they drink a glass of milk before bed and would make them sleep longer what’s the independent vari
miss Akunina [59]

Answer:

Independent variable: Glass of milk

Dependent variable: Time of sleep

Control variable: same type of milk

Explanation:

Independent variable in an experiment refers to the variable that the experimenter manipulates or changes in order to get a response in another variable (dependent). In this case, the independent variable is the GLASS OF MILK taken before bed.

Dependent variable is that variable that is measured in an experiment. It is the variable that responds to the changes made to the independent variable. In this experiment, the dependent variable is the TIME OF SLEEP of the students.

A control variable or constant is the variable that is kept unchanged throughout the course of the experiment in order not to alter the outcome of the experiment. In this experiment, a control variable can be the SAME TYPE OF MILK taken by each student.

6 0
3 years ago
What renewable biomass fuel source has been used for thousands of years?
viva [34]
It’s definitely wood
4 0
3 years ago
Read 2 more answers
I went on a school trip and saw mr tumble in the bushes with mr bloom. What should I do??
s2008m [1.1K]
They are playing hide and seek. Start counting out loud randomly
8 0
2 years ago
Which of the following statements is not true of the circulatory system and its transport of nutrients?
Vladimir [108]

Answer: b. Nutrients that leave the small intestine via blood are delivered first to the liver.

Explanation:

Lymph is a clear fluid that leeks out from the interstitial spaces of the cells and this comprises of electrolytes, blood proteins, and antibodies. It is pushed towards the heart from the lymphatic vessels. The nutrients from the small intestine are drained into the bloodstream and they are circulated to all parts of the body and not directly destined towards the liver.

5 0
3 years ago
Two different recording stations have found that they had the same value for T after an earthquake. If this is all the informati
igor_vitrenko [27]
They can conclude that the epicenter is the same distance from both recording stations.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Disadvantage of the light microscopes
    6·2 answers
  • The method of scientific inquiry that describes natural structures and processes as accurately as possible through careful obser
    13·1 answer
  • Can you have a hypothesis that does not explain an observation?
    10·1 answer
  • The movement of matter across a cell membrane against a concentration difference is called active transport , and it requires?
    11·1 answer
  • The organism Euprymna scolopes is most likely related to
    12·1 answer
  • Where do fossil fuels come from and are the renwable or non rewnable
    8·2 answers
  • What vision abnormality occurs when light is focused behind the retina?
    9·1 answer
  • A fossil find contains impressions of leaves that lived on the ancient plants. How would you classify this type of fossil?
    11·2 answers
  • What happens at the end of the Calvin cycle?
    8·2 answers
  • a student placed a plant under a lamp that gets direct, bright light every day. the plant starts to grow toward the light. what
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!