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Artyom0805 [142]
4 years ago
15

A microbiologist obtained two pure biological samples: one of a virus, and the other of a viroid. Unfortunately, the labels had

been lost. The microbiologist felt she could distinguish the two by analyzing for the presence or absence of a single molecule. What molecule would she search for and why?
Biology
1 answer:
USPshnik [31]4 years ago
5 0

The researcher could look for the presence of proteins, because viruses have a envelope (capsid) composed of proteins that involve their genetic material. The capsid may have a helical or icosahedral structure and is extremely regular. Viroids cannot synthesize any type of protein, so differentiation is possible.

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How does global wind patterns such as prevailing westerlies in the northern hemisphere get impacted if the rotation of Earth sto
Len [333]

If the earth did not rotate on its axis then the atmosphere would only circulate on its poles and the equator in a simple back and forth pattern.


4 0
3 years ago
In an effort to reduce the United States' dependency on foreign oil, exploration and drilling throughout areas of the United Sta
tresset_1 [31]

Answer:

Possible environmental contamination.

Explanation:

3 0
4 years ago
How is ATP formed from ADP
Whitepunk [10]
ATP is the higher energy form  while ADP is the lower energy form .<span>When the terminal (third) phosphate is cut loose, ATP becomes ADP, and the stored energy is released for some biological process to utilize.Hope this helps!!</span>
7 0
3 years ago
How did the frequency of stimulation affect the amount of force generated by the isolated skeletal muscle when the frequency of
Alexxandr [17]

Answer:

When the frequency of stimulation of a muscle increases -without it having the opportunity to relax- a process called summation (addition) occurs, promoting an increase in the generation of force in the isolated skeletal muscle.

Explanation:

Summation is a phenomenon that occurs as a consequence of the arrival of successive stimuli that produce the contraction of the skeletal muscle before it achieves its partial or total relaxation, between subsequent stimuli.

<em>When the summation occurs in the muscle, the force generated on it increases its magnitude proportionally to the number of stimuli received, maintaining the muscle contraction in time</em>.

Tetany is the prolonged contraction of a muscle in an abnormal way, by the summation of stimuli received , as some bacterial toxins can produce. The summation can be temporary -when multiple stimuli reach the muscle in a determined time- or spatial, when the amount of stimuli activates a greater amount of motor units.

Learn more:

Spatial summation in a post synaptic neuron brainly.com/question/9632682

3 0
4 years ago
Hair follicles are found in the layer of skin called the
kolezko [41]

Answer:

Dermis

Explanation:

The hair follicles are present in the dermal papillae of the dermis layer. The dermal papillae are a series of triangular-shaped cells. The hair follicles are extending from the skin surface to the dermis layer of the skin. The hairs are the extension of the epidermis layer into the dermis layer of the muscle. The hair follicle has 2 parts, such as - the part which extends outside of the epidermis known as the shaft. The base of the follicle known as root. The hair follicle itself has different parts - outer root sheath, inner root sheath, and a centrally placed hair shaft. The erector muscles help in goosebumps of hair during cold.

6 0
3 years ago
Read 2 more answers
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