BIOLOGY HIGH SCHOOL

According to PET scan results, what do cocaine addicts process less efficiently?

Answers

Answer 1
Answer: Positron Emission Tomography scan of the brain of cocaine addicts showed that the drug affects how the brain use glucose. Cocaine users' brain cannot use glucose efficiently and there are also reduced metabolic activity in other areas of the brain.

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Mosses are _____. bryophytesgymnospermsangiosperms
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Which of the following accurately describes kidney function?A. Kidneys will excrete salts if you have too little in your blood. B. Kidneys are directed by the presence of antidiuretic hormone to excrete more water in urine. C. Kidney function is controlled by the blood's composition and hormones. D. Kidneys can excrete salts, but not glucose.
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Which term best describes the change from more light colored moths to more dark colored moths

Answers

Natural selection....

Two main proteins found in muscle area. smooth and skeletal.
b. tendons and ligaments.
c. actin and myosin.
d. myofibrils and fibers.

Answers

The answer is C: actin and myosin

Answer:

c. actin and myosin

What type of bond is shown below, where electrons are shared between the bonded atoms?A: covalent bond
B: ionic bond
C: hydrogen bond
D: is crossed out

Answers

A. Covalent bond means sharing of electrons between both non metal molecules

Which of the following nutrient cycles has its largest reservoir in the atmosphere?A) Carbon cycle
B) Nitrogen cycle
C) Potassium cycle
D) Phosphorus cycle
E) Water cycle

Answers

I would actually say carbon since the carbon cycle takes place mostly in the atmosphere while the nitrogen cycle takes place mostly below ground.

~fourth largest plate ~includes parts of the Indian and Atlantic Oceans

~subducts below the Eurasian Plate on the west side

~ the Arabian and Somali Plates form boundaries with it


What is the name of the tectonic plate described above?


A)

African Plate



B)

Eurasian Plate



C)

North American Plate



D)

Indo- Australian Plate

Answers

Answer:

Option (A)

Explanation:

The African plate is usually referred to as the fourth major (largest) tectonic plates that cover the continent of Africa and a portion of both the Atlantic and Indian ocean.

This plate shares a convergent plate boundary with the Eurasian plate towards its western side, where the African plate being denser subducts below the lighter Eurasian plate

It shares a boundary with the two smaller plates namely the Somalian and the Arabian plate towards its eastern side.

Thus, the correct answer is option (A).

The diagrams below illustrate models of various chemical compounds..How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare?
A. The outcome variable (dependent variable) controls the test variable (independent variable).
B. The test variable (independent variable) controls the outcome variable (dependent variable).
C. The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other.
D. The test variables (independent variables) and outcome variables (dependent variables) are the same things.

Answers

Answer: B

Explanation:

The independent variable is the experimenter so it changes and controls the dependent variable because it is assumed that the dependent variable gets a direcr effect from the independent variable.
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What is the role of RNA?
Dead animals and plants and wastes