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
Over [174]
3 years ago
8

Which are types of star systems?

Biology
2 answers:
sladkih [1.3K]3 years ago
7 0

Answer:

binary stars

Explanation:

Anarel [89]3 years ago
5 0

Answer:

- binary stars

Explanation:

A binary star is a star system. It is composed of its stars that orbit the same center of mass, that is, orbit around each other.

If two stars orbit each other, but maintaining a great distance from each other, they evolve independently and are called a separate pair. If they are close enough for matter to transfer between them due to tidal forces, they are called close pair or contact.

Binary stars obey Kepler's Laws of Planetary Motion, which are three:

  • 1st law (law of orbits): Each star moves along an elliptical orbit, with the center of mass of the system at one of the foci of this ellipse.
  • 2nd law (law of areas): the line connecting one star to another scans equal areas at equal time intervals.
  • 3rd law (harmonic law): The square of the orbital period of the stars is proportional to the cube of their average distance to each other.
You might be interested in
The critical component of Kochs second postudace is that
kicyunya [14]

Answer:

4. The suspected causative agent must be isolated from the diseased host and grown in pure culture

Explanation:

Robert Koch (1843-1910) was one of the most important bacteriologists of all time. Famous for discovering the tuberculosis bacillus (precisely on March 24, such as today, in 1882), he also discovered the cholera bacillus and is considered the founder of bacteriology. He worked on the isolation of infectious agents and reinfections from pure cultures, experiences from which he established the "Koch Postulates".

These postulates have been taken as a reference that describes the etiology of all the causative agents of an infectious disease, although they were originally used to describe only the tuberculosis bacillus. They are the following:

1- The agent must be present in each case of the disease and absent in the healthy.

2- The agent should not appear in other diseases.

3- The agent must be isolated in a pure culture from the lesions of the disease.

4- The agent has to cause the disease in an animal that can be inoculated

4 0
3 years ago
A student removes an algae cell from its marine environment and puts it into a sample of freshwater. What will happen to the siz
Igoryamba

The size of the algal size will increase or swell when a student removes an algal cell from its marine environment and puts it into a sample of freshwater.

Tonicity refers to the concentration of a solution compared to another solution. A solution is said to be hypertonic, if it has a greater concentration of solutes than the other solution. A solution is said to be hypotonic, if it has a lower concentration of solutes than the other solution. A solution is said to be isotonic, if it has the same concentration of solutes as of the other solution.

In a marine environment, the algal cells are said to be hypertonic with a higher concentration of the solutes than the freshwater. When such a cell is placed in freshwater with hypotonic environment, the concentration of solutes in the cell is higher than the external environment. In other words, it has lesser water molecules in it. As a result, osmosis occurs which is the movement of water molecules from a region of its higher concentration to a region of its lower concentration through a semipermeable membrane and water enters the cell from the freshwater. Thus, increasing the size of the algal cell or the algal cell swells.

8 0
3 years ago
Read 2 more answers
Which is NOT true of animals
My name is Ann [436]

Answer:

D

Explanation:

plants make their own food not animals, hope this helped :)

4 0
3 years ago
PLS HELP ASAP!!! I WILL NAME BRAINLIEST!!
atroni [7]

Answer:

either B or D because at the end Whilst the ultimate outcome of the lytic cycle is production of new phage progeny and death of the host bacterial cell, this is a multistep process involving precise coordination of gene transcription and physical processes.

8 0
3 years ago
Distinguish catabolism from anabolism.<br> I don't know this, I need help.
Gennadij [26K]

Answer:

See below

Explanation:

The difference between these two is that anabolism requires energy to grow and build and catabolism uses energy to break down.

8 0
1 year ago
Other questions:
  • Which of the following statements is FALSE regarding the GH hormone? a. it is produced by the anterior lobe of the pituitary gla
    7·1 answer
  • This image shows the RBCs of a person with sickle cell anemia, an inherited condition. What effects could the shape of these cel
    15·2 answers
  • What is the northernmost spot in the 48 contiguous u.S. States?
    12·1 answer
  • What is one part of a nucleotide that differs among the 4 different nucleotide
    14·1 answer
  • Choose the arrangement that lists the chemicals in the order in which they would be used for coagulation.
    5·1 answer
  • PLEASE HELP THIS IS TIMED
    5·2 answers
  • Is the mass–kinetic energy relationship directly proportional (as one variable increases, the other increases) or inversely prop
    11·2 answers
  • Explain how a person could die from drinking too much water. Be sure to use the following terms in your answer: diffusion, osmos
    14·1 answer
  • Before conducting an experiment, a scientist needs to review _____.
    15·2 answers
  • What ia rock?<br>give answer​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!