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goldfiish [28.3K]
3 years ago
7

Please help me im really stuck and don't know the answer

Biology
1 answer:
Nastasia [14]3 years ago
8 0
I think the answer is d
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Which of the following is not a compound? A. Water B. Gold C. Sugar D. Salt
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i think sugar because its a product that is made from factories

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3 years ago
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According to the gate control theory of pain, how do gate neurons inhibit pain neurons? select one:
harkovskaia [24]

The gate control theory of pain states that the experience of pain is dependent on the complex interaction of the central and the peripheral nervous system. This theory was given by Ronald Melzack and Patrick Wall.

Usually, when a person experiences pain, the neurons transmits the message from the area of damage along the peripheral nervous system to the spinal cord and the brain.  The gate control theory suggests that the neurons encounter the 'nerve gates' while transmitting the pain messages in the spinal cord. These opening and closing of these gates is dependent on the multiple factors.  

The basket cells are the multipolar, inhibitory interneurons . Endorphins are the neuropeptide and the peptide hormones, which are secreted by the central nervous system and the pituitary gland. These structures have no relation with the transmission of the pain.

The hyperpolarization of the neurons by the opiate receptors resulting in the release of the substance P, which is a neurotransmitter involved with pain.

Hence, the correct answer is 'by releasing substance P'.

5 0
3 years ago
What are some differences and similarities between solar energy production and photosynthesis?
Ivahew [28]

Answer:

The main difference between photosynthesis and cellular respiration is that photosynthesis is an anabolic process, where the synthesis of organic compounds occurs, storing energy whereas cellular respiration is a catabolic process, where the stored organic compounds are utilized, producing energy.

Explanation: hope it helps!

7 0
3 years ago
Scientists compare two different plant species. In species A, the leaf color is controlled by two alleles. In species B, leaf co
Gemiola [76]
The answer is D. Species A will have fewer phenotypes.
Alleles are alternative forms of a gene. In species A, the leaf color is controlled by two alleles, for example, P and Q. They will have three possible genotypes - PP, PQ, and QQ. Three different genotypes give maximum three phenotypes.In species B, leaf color is controlled by three alleles, for example, L, M, and N. They will have six different genotypes - LL, LM, LN, MM, MN, and NN. Six different genotypes give maximum 6 phenotypes. 
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3 years ago
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A remarkable fact about cells is that _____. different types have few similarities all types of cells are almost identical cells
Ulleksa [173]

Answer;

cells are very different but have similar properties

Explanation;

-Even though there are many different types of cells, they all share similar characteristics. All cells have a cell membrane, organelles organelles, cytoplasm, and DNA.  All cells are surrounded by a cell membrane, all cells contain organelles, all cells contain cytoplasm and all cells contain DNA.

-Cells may differ in their number such that some organisms are made of only a single cell while other organisms are made of billions of cells

8 0
3 years ago
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