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
iren2701 [21]
3 years ago
11

Which of the following describes a positron emission tomography (PET) scanner? 1: A device that uses magnetic fields to produce

images of brain structures 2: A device that uses magnetic fields to measure blood flow 3: A device that uses radioactive fluid to determine the active areas of the brain 4: An X-ray device that can create a 3D model of the brain
Biology
1 answer:
Delvig [45]3 years ago
7 0

Answer:

3: A device that uses radioactive fluid to determine the active areas of the brain

Explanation:

A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.

Depending on the type of exam, the radiotracer is injected, swallowed or inhaled as a gas. It eventually accumulates in the area of the body under examination. A special camera or imaging device detects radioactive emissions from the radiotracer. The camera or device produces pictures and provides molecular information.

You might be interested in
Unlike rocks, all minerals ________ and ________.
Maurinko [17]

The correct answer is B!

Why is this?

A mineral is a naturally occurring, inorganic solid with a definite crystalline structure and chemical composition. All minerals contain one or more elements, which are pure substances that cannot be broken down into simpler substances by chemical means.

8 0
3 years ago
Tipo especializado de bolsas alargadas que envuelve los tendones cuando atraviesan túneles osteofibrosos
Rudiy27

Answer:

Vainas sinoviales tendinosas

Explanation:

Las vaina tendinosas o vainas sinoviales son mangas de tejido de protección que se encuentran alrededor de las articulaciones o rodean a los tendones. Estas vainas permiten que los tendones se deslicen suavemente, produciendo un líquido (líquido sinovial) que mantiene al tendón lubricado. De este modo, las vainas tienen como función evitar el roce entre el tendón y el hueso. Las vaina tendinosas conforman un revestimiento de dos capas: una interna unida al tendón y una externa de tejido conectivo.

3 0
3 years ago
PLEASE HELP WILL GET 30 POINTS AND BRAINLIEST AWNSER
koban [17]

Answer:

There are approximately five main climate types on Earth:

Tropical.

Dry.

Temperate.

Continental.

Polar.

6 0
3 years ago
Describe what it means when we say that DNA replication is semi-conservative:
Anna007 [38]

Answer: Semi-conservative replication means that during DNA replication, the two strands of nucleotides separate. Both strands then form the template for free nucleotides to bind to to create the two identical daughter strands. Hence each daughter strand has half of the DNA from the original strand and half newly-formed DNA.  brainliest

Explanation:

3 0
3 years ago
What structure of protein is the second folding of the protein chain
sergeinik [125]
The ensemble of formations and folds in a single linear chain of amino acids sometimes called a polypeptide constitutes the tertiary structure of a protein. Finally, the  quaternary structure of a protein refers to those macromolecules with multiple polypeptide chains or subunits.
6 0
3 years ago
Other questions:
  • if 144 million cars are use in United States each day how many pounds of carbon dioxide are released into the air each week
    11·2 answers
  • The volume of 100 drops of a liquid is 0.01 fluid ounce. What is the volume of 10,000 drops?
    11·1 answer
  • What is passive transport? What types of transport are considered passive?
    12·2 answers
  • Which organisms in a population survive to reproduce?
    5·1 answer
  • What makes a dominant allele different from a recessive allele?
    14·2 answers
  • Bdofneocnfo coebfle fonrfjw f. e r e d d d d. f d f g d f d f d f f
    11·1 answer
  • What does evaporation change from ? Solid ———> liquid Liquid ———-> Solid What does condensation change from Liquid——->
    6·1 answer
  • Which of the following is not a step of Natural Selection?
    14·1 answer
  • I'm horn¥ I'm 13 male. ​
    8·2 answers
  • The diagram represents the Moon and its orbit around Earth. The arrow labeled X represents the force that keeps the Moon in its
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!