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vlabodo [156]
3 years ago
11

The first strands of DNA were observed through which microscope? tunneling microscope simple microscope compound light microscop

e electron microscope
Biology
2 answers:
pickupchik [31]3 years ago
8 0
Technically, X-ray crystallography, which is like an unfocused electron microscope, was first used to see DNA structure. Scientists today use more refined electron microscopes for researching DNA and its structure.
Norma-Jean [14]3 years ago
5 0

Technically, X-ray crystallography, which is like an unfocused electron microscope, was first used to see DNA structure. Scientists today use more refined electron microscopes for researching DNA and its structure

Explanation:

The electron microscope is a kind of microscope that uses a beam of electrons to produce an image of the specimen. It is acceptable of important special magnifications and has a greater resolving power than a light microscope, providing it to see much smaller objects in precise detail.

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All answers but "the blood brain barrier does not factor in with endocrine signaling. " are true.
padilas [110]
Endocrine signaling is hormone based signaling that travels through the blood stream. Many of the sensors and integrating sensors of the endocrine system are located in the brain. The brain barrier contributes to endocrine signalling, such that the brain barrier does not factor in with endocrine signalling. The answer is A
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Answer:

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The sensation stage of the erotic stimulus pathway theory is similar to the _________ and _________ phases of the epor model.
leva [86]
Hi,

The answer is A.

"The sensation stage of the erotic stimulus pathway theory is similar to the excitement and orgasm phases of the epor model."

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r3t40
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3 years ago
What hormone released by the highlighted structures inhibits the secretion of FSH only?
soldi70 [24.7K]

Inhibin inhibits the secretion of FSH only.

<h3>What is the role of inhibin?</h3>
  • Inhibin is a protein mainly produced by the gonads.
  • In men it is produced by the Sertoli cells and it is produced by the granulose cells in women.
  • It negatively regulates the secretion of Follicle Stimulating hormone (FSH) from the pituitary gland.
  • FSH itself induces the production of inhibin for negative feedback.
  • Pituitary is a pea shaped endocrine gland present at the base of the brain. It is the major endocrine gland and controls growth, development and functions of other endocrine glands.
  • Hormone activin has opposite effect to inhibin. It enhances FSH biosynthesis and secretion.

Learn more about pituitary here:

brainly.com/question/1372599

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5 0
2 years ago
Which term names the types of elements usually found in meteorites a.minerals b.gases c.metals d.nonmetals
vesna_86 [32]

Answer:

Minerals

Explanation:

Gases are natural and in the ground, metals are also in the ground as are non metals -just look at dirt- and minerals are usually found in geodes, which are usually fallen bits of asteroid and meteorite that has survived earth's atmosphere

4 0
3 years ago
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