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
grigory [225]
3 years ago
14

Why is the human body considered an open system

Biology
1 answer:
Illusion [34]3 years ago
8 0
An open system can react becuase its opened...we breath and eat...so our bodys are an opened system.

You might be interested in
What is photosynthesis?<br>​
Vanyuwa [196]

Answer:

the process by which green plants turn carbon dioxide and water into food using energy from sunlight

5 0
2 years ago
Read 2 more answers
What is the function of the primary and secondary pharyngeal bars in Amphioxus?
viktelen [127]

Answer:

In Branchiostoma, it is used mainly for feeding. The pharynx consists of numerous pharyngeal bars, with pharyngeal slits between them. The animal sucks in water through its mouth and forces it out through the pharyngeal slits, capturing small food particles from the water

5 0
3 years ago
A young adult is exposed to a virus that infects and replicates in mucosal epithelial cells of the upper respiratory tract. One
marishachu [46]

Answer:

The CTL has specific receptors that can recognize infected or damaged cells.

Explanation:

The cytotoxic T cells (CTL) is a type of white blood cells that specifically helps in destroying virus-infected cells (also damaged cells and cancer cells).

This type of cells has a special receptor called T-cells receptors (TCR) which ones recognize specific antigens (molecule that stimulate the immune systems because are “strange” to them). Virus inside a cell could bind to a special molecule called class I MHC, this molecule moves the virus to the surface of the cell where it can be recognized by a CD8+ specific antigen-receptor of the CTL.

3 0
3 years ago
2. Consider a well-trained 130-pound female marathon runner, Jordan. Jordan has just loaded up on a carbohydrate meal and has th
Vlad1618 [11]

Answer:

Hey

Explanation:

How are hoy mi mamá os rodrigo

7 0
3 years ago
A pharmacist has two vitamin-supplement powders. The first powder is 10% vitamin B1 and 30% vitamin B2. The second is 15% vitami
Basile [38]

Answer:

560 mg of powder 1 and 160 mg of powder 2

Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and  "Y" denotes weight of powder 2 added to the new mixture

Total weight of vitamin B1 in the mixture is equal to 80 mg

Total weight of vitamin B2 in the mixture is equal to 200 mg

Equation 1

0.1 X + 0.15 Y= 80

Equation 2

0.3 X + 0.2 Y= 200

Let us simplify the above two equations, we will get

10 X + 15 Y = 8000\\3X + 2Y = 2000

2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560

Substituting value of X in equation 2 we get

0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160

7 0
3 years ago
Other questions:
  • Explain how a starfish's body plan and anatomy enables invertebrate to perform the essential functions it needs to survive.
    7·1 answer
  • The pH scale measures whether solutions are acidic, basic, or neutral. The pH needed by living cells is very specific, and can v
    15·2 answers
  • Which best compares DNA and RNA with regard to the process of protein production?
    8·2 answers
  • Which winds are found primarily in the tropics:
    10·1 answer
  • 1. A heterozygous tall pea plant is crossed with a short plant. The probability that an F1 plant will be tall is:
    6·1 answer
  • According to symbolic interactionism, what is the effect of social stratification on the lower classes of society?
    10·1 answer
  • A galaxy has less mass than a moon and more mass than a planet.<br> True<br> False
    10·2 answers
  • In red blood cells, the compound carbonic anhydrase increases the rate at which the reaction of carbon dioxide being converted t
    14·1 answer
  • What is the effort put by scientists and sailors to know about earth?​
    15·2 answers
  • Why doesn’t dr. logan feel the bed bug feeding on him?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!