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suter [353]
3 years ago
13

In a double-blind procedure, knowledge about whether a drug or a placebo is being administered is withheld from __________.

Biology
1 answer:
vagabundo [1.1K]3 years ago
3 0
From the individual administering the drug and the person receiving the drug
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How does the support structure of echinoderms differ from that of arthropods?
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Arthropods have a tough, non-living outer shell called exoskeleton, which protect their soft bodies while echinoderms have living endoskeletons, which develops within the deeper skin or body tissues and act as their protective covering.Explanation:

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"can you identify the types of cell in which each organelle is found?"
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Dang i cant quit do that off the top of my head sorry 
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Products enter a reaction and reactants come out of a reaction true or false?
hjlf

Answer:

\boxed {\boxed {\sf False }}

Explanation:

In a chemical reaction, the <u>produc</u>ts are <u>produc</u>ed. The <em>react</em>ants are the substances that <em>react.</em>

<em />

In a chemical reaction equation (with the arrow pointing right) the reactants are on the left and the products on the right.

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The reactants enter and the products come out.

So, the statement given - products enter a reaction and reactants come out - is false and it is actually the other way around.

3 0
3 years ago
Which is the control center of the endocrine system ?
Iteru [2.4K]

Answer:

Hypothalamus

Explanation:

is linked to the pituitary gland (both in the brain) which releases stimulating and inhibiting hormones which go to glands which are part of the endocrine system such as the thymus

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3 years ago
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Neighboring cardiac muscle cells in the walls of heart chambers have specialized cell-to-cell contacts that electrically and mec
IrinaVladis [17]

Answer:

Neighboring cardiac muscle cells in the walls of heart chambers have specialized cell-to-cell contacts that electrically and mechanically link the cells together, permitting the immediate passage of muscle impulses. These cell-to-cell contacts are called <u>intercalated discs.</u>

Explanation:

Intercalated discs can be described as unique structures present between the cardiac muscles of the heart. The intercalated discs play a major role in making the cardiac muscles contract in a rhythm so that the heart can pump blood in a regular fashion and it hence regulates the effective functioning of the heart. The intercalated discs are the structures that join on cardiac muscle to another and is involved in the transmission of chemical messages between them.

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3 years ago
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