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Inessa05 [86]
3 years ago
12

What is usually responsible for an earthquake?

Biology
2 answers:
Leokris [45]3 years ago
6 0
Movement in the tectonic plates of the earth's crust
blondinia [14]3 years ago
3 0
Two plates of the earth's crust rubbing on each other. This causes friction hence the earthquake.
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A bacterial cell that contains an outer membrane and periplasmic space stains pink to red on Gram stain. Which one of the follow
anastassius [24]

Answer:

a. No discrepancy is present; organisms that contain an outer membrane and periplasmic space should stain pink because of their cell wall composition.

Explanation:

Gram stain is the staining method used to differentiate bacterial species into two groups, gram-positive and gram-negative bacteria. Factors that will differentiate gram-positive from gram-negative include the coloration of bacteria, the composition and chemical and physical properties of cell walls. In these tests, bacteria that have an outer membrane and a periplasmic space are considered gram negative and pink in color (sometimes similar to red) due to their cellular composition. For this reason we can state that there is no discrepancy present in the bacteria exposed in the question; Because this bacterium has an outer membrane and a periplasmic space, then it is normal for the bacteria to turn pink due to its cell wall composition.

6 0
3 years ago
Dr. Semmelweis, a physician from Austria, wanted to locate the cause of childbed
tatuchka [14]

Answer:

Hypothesis

Explanation:

A hypothesis is an educated guess, based on evidence provided by the initial question the scientist had. I hope I helped you:)

5 0
3 years ago
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What is the function of the hormone progesterone?
ludmilkaskok [199]
To regulate the condition of the endometrium of the uterus
3 0
3 years ago
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Rigor mortis occurs because ________.
Kamila [148]

Answer:

No ATP is available to release attached actin and myosin molecules.

Explanation:

Two to six hours later after death, all skeletal muscles of the body become rigid and stiff. This situation is defined as Rigor mortis. It occurs from the lack of ATP along with the production of lactic acid. When breathing stopped permanently in the body, oxygen level also reduced; that’s why body muscles cannot go for any aerobic respiration to produce any ATP. 

As we know already, during every muscle construction, ATP needs to break the cross-bridge between Myosin and Actin. So if there is no ATP produced in the body, separation of Myosin molecules from Actin molecules cannot happen anymore. This situation leads for rigor mortis.

6 0
3 years ago
Use the following example for the question. A species of fish can withstand a narrow range of temperature. Above 100°F there are
RUDIKE [14]
<h2>Zone of physiological stress</h2>

Explanation:

For this particular species I would label 90°F to 94°F as the temperature zone of physiological stress.

We find that within this temperature range the number of individual in the population lessens. This means they are under certain physiological stress which limit there growth.

Again within 95°F–96°F  we find that the number of individual is maximum. This means that the population can utilize the available resources to their maximum efficiency at this range. So, it is the optimum range.

4 0
3 years ago
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