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

1 answer:

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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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What novel characteristics are shared by gymnosperms and angiosperms but not by mosses and ferns?

sergejj [24]

Explanation:

Mosses go through sporophyte and gametophyte stages in their life cycle. ... However, mosses are nonvascular while ferns are vascular. Gymnosperms and angiosperms are both vascular, seed-bearing plants. However, gymnosperms release their seeds in cones (like pinecones) while angiosperms release their seeds through flowers.

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3 years ago

What cell parts are common to all of these cells? Use complete sentences.

Natalka [10]

Answer:

between an animal cell and a plant cell there are some parts that are similar and carry out the same function like:

both have a cell membrane which selects what goes in the cell.

both have cytoplasm which holds the protoplasm(the living part of the cell)

both have a nucleus which carries out all cell activities and holds threads of DNA called chromosomes

both have a mitochondria which is the power house of the cell

both have golgi bodies which modify and carry proteins from sites of synthesis to sites of reaction

I hope this helps

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2 years ago

The scientific study of heredity

muminat

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3 years ago

Surface protein that helps identify an organism

inn [45]

A cell surface protein is a proteins that is embedded in or span the layer of cell membranes of more complex organisms. These proteins are integral to the way in which a cell interacts with the environment around it, including other cells.

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3 years ago

Green algae are more closely related to plants than they are to kelp.Why is this so?

In-s [12.5K]

Answer: Green Algae are closely related to plants.

Explanation: Green Algae are closely related to plants because of they possess photosynthetic pigments as plants.

Green algae and plants are closely related in that they can manufacture their own food from nutrients and sunlight through the process of photosynthesis

Green algae also possess the same carotenoids and chlorophyll a and b as land plants which make them closely related.

Kelps don't have these characteristics.

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3 years ago