The first samples of the moon’s surface to be brought back by Apollo astronauts were

Biology

1 answer:

klemol [59]3 years ago

4 0

It was the apollo 11. sorry thats all i know. hope it makes finding the rest of the info easier :)

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1. In the first step in the life cycle of a star, it is called a:

lbvjy [14]

I’m pretty sure it’s c. protostar

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3 years ago

Which component of the electrocardiogram represents the duration of ventricular contraction?

Advocard [28]

QRS complex refers to the combination of the Q, R, and S waves, and indicates ventricular depolarization and contraction (ventricular systole).

Ventricular rate can be calculated by determining the time interval between QRS complexes. The duration of the QRS complex is normally 0.06 to 0.10 seconds. This relatively short duration indicates that ventricular depolarization normally occurs very rapidly.

P QRS and T waves in electrocardiogram signifies the P wave in an ECG complex indicates atrial depolarization. The QRS is responsible for ventricular depolarization and the T wave is ventricular repolarization.

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2 years ago

If you ate a spoonful of peanut butter for breakfast, the majority of the energy would come from the ________in the peanut butte

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Answer:

: High in Good Fats, Protein,

Explanation:

Peanut butter is rich in heart-healthy fats: High in Good Fats, Protein, and Satisfaction

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3 years ago

Insect wings may have begun to evolve as lateral extensions of the body that were used as heat dissipaters for thermoregulation.

jeyben [28]

Answer:

The correct answer is option b, that is, an exaptation.

Explanation:

The co-option or the associated term exaptation illustrates a shift in the activity of a trait at the time of evolution. For example, a trait can evolve as it performed one specific activity, however, afterwards, it may start to perform another function. It is common in both behavior and anatomy.

A classic illustration of exaptation is feathers of birds, at the start they were evolved for monitoring temperature, however, afterwards they were amended for flight. Thus, if the given hypothesis is accurate than the modern wings of insects are an example of exaptation.

Adaptive radiation refers to the diversification of an array of organisms to hold a distinct ecological niche. The origination of mutation takes place because of the errors in the replication of DNA. The hox genes in the insects assist them to specify that what appendages will get produced in a segment.

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Pathogenic bacteria that succeed in penetrating the wall of the large intestine into the blood circulation are removed or destro

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<h2>Intestinal Epithelial Cells (IEC)</h2>

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Impairment of the barrier function of the intestinal epithelium may be a predominant mechanism in the pathogenesis of inflammatory bowel disease (IBD)

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