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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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51. how do the differences in amino acid sequences lead to different protein functions?
Setler [38]

DifferentDifferent amino acid produce different proteins based on the bonds formed between them .

<h3>How does the sequence of amino acids affect the functions of protein ? </h3>

The sequence of amino acid of a protein determines protein shape , since the chemical properties of each amino acids are forces that gives rise to intermolecular interaction to begin to create secondary structure .

Amino acids are monomers of protein. So , different amino acids produce different proteins based on the bonds formed between them.

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3 0
2 years ago
Label the letters in the diagram​
Vera_Pavlovna [14]

Answer:

A- I have not idea sorry!

B- Looks like a vacuole

C- Cell membrane

D- Endoplasmic Reticulum

Explanation:

8 0
2 years ago
The ________ division of the nervous system carries motor commands to muscles and glands.
taurus [48]

The answer is efferent division. The nervous system acts as an input-output system. The afferent nervous system conveys signals to the brain following a stimulus. After processing of the information, the brain sends out a signal in response. This response is carried by the efferent nerve to the requisite organ involved in the response.  






8 0
4 years ago
_____ is triggered by degeneration of dopamine-producing neurons in the brain.
Xelga [282]
Parkinson’s disease is triggered by degeneration of dopamine-producing neurons in the brain. <span> <span><span> <span> Parkinson's disease is a neurodegenerative disease of the CNS resulting from degeneration of dopamine-producing neurons in a region of the midbrain called the substantia nigra. Some of the factors that induce this disease are oxidative stress<span>, inflammation, and dysfunctional mitochondria. The disease is progressive including characteristic symptoms such as tremors, muscle rigidity, loss of coordination bradykinesia (slowness and difficulty with movements), sleep disturbances...</span> </span> </span> </span></span>
5 0
4 years ago
(will give brainiest if right) Peppered moths are dark colored when they carry the dominant (D) allele and light colored when th
kaheart [24]

D. DD = 0.0225; Dd = 0.1275; dd = 0.7225

The value of Dd is different in question.

<u>Explanation:</u>

Given -

Dark colored = DD, Dd

light colored = dd

Frequency of allele D = 0.15

Frequency of allele d = 0.85

Hardy-Weinberg equilibrium is applied.

DD = 0.15 X 0.15 = 0.0225

Dd = 0.15 X 0.85 = 0.1275

dd = 0.85 X 0.85 = 0.7225

Therefore, DD = 0.0225; Dd = 0.1275; dd = 0.7225

7 0
3 years ago
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