I need help w these two

Which of the following is a true statement about lava that contains large amounts of dissolved gases? Lava that produces violent

anygoal [31]

Answer:

The dissolved gases produce violent eruption as they escape. 

Explanation:

Magma contains dissolved gases and these dissolved gases induce vapor pressure on the magma. The magma is able to remain in the dissolved state itself without erupting because this vapor pressure is less than the confining pressure of the rock surrounding the magma. 

One the vapor pressure exceeds this confining pressure the dissolved gases begin to expand and forms small gas bubbles.

The density of these gas bubbles called vesicles is less than the density of magma and thus naturally tries to push out. When the gas bubbles escape the magma is also pushed out. Thus greater amount of dissolved gases result in violent eruptions. 

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8 0

3 years ago

What is a function of a bacterium's capsule?

nevsk [136]

The purpose of a bacterium's capsule is protection.

<h3>What use does the capsule of a bacteria serve?</h3>

White blood cells may eat and kill pathogens, but capsules could stop that from happening (phagocytosis). Although the precise mechanism for avoiding phagocytosis is unknown, it may occur because the presence of capsules makes the surface elements of bacteria more slippery, preventing the bacterium from being absorbed by phagocytic cells.

Capsules comprised of bacterial defenses and the host. The main function of the capsules of pathogenic bacteria is to prevent opsonophagocytosis or in the case of Gram-negative bacteria, complement-mediated lysis by shielding the bacterial surface from interactions with the host immune system.

To learn more about bacterium's capsule visit:

brainly.com/question/12789454

#SPJ4

3 0

1 year ago

The pedigree below concerns the autosomal recessive disease phenylketonuria (PKU). The couple marked A and B are contemplating h

likoan [24]

Answer: Hello your question some missing data attached below is the complete question

answer:

P( first child having PKU ) 0.25 ≤ x ≤ 0.5

Explanation:

The pedigree father has PKU ( pp ) ( From the top right )

pedigree mother = PP

The possible resultant progeny = Pp

Resultant progeny marries non-carrier ( Pp x PP ) = PP , PP, pP, pP

Hence B is either ; PP ( non carrier ) or Pp ( carrier )

From left

one of the Resultant progeny = pp ( affected ). this simply means pedigree parents where both carriers or sufferers i.e. Pp or pp

Hence A is either ; Pp or pp

The probability of their first child having PKU

= PP x Pp = PP, Pp, PP, Pp ( probability = 0 in this case )

= Pp x Pp = PP, Pp, pP, pp ( probability = 1/4 * 100 = 25% )

= Pp x pp = Pp, Pp, pp, pp ( probability = 2/4 * 100 = 50% )

P( first child having PKU ) 0.25 ≤ x ≤ 0.5

lets denote dominant Gene = PP, recessive Gene = pp

3 0

2 years ago

Which of the following is NOT a general characteristic of the fat-soluble vitamins?

FinnZ [79.3K]

Answer: a. Excesses are eliminated from the kidneys.

Explanation:

A fat-soluble vitamin can be dissolved in fats and oils. They are absorbed along with fats in the diet from the intestinal lumen using the same mechanisms used for absorption of lipids. Upon absorption, these vitamins enter the lymph vessels before making they go into the bloodstream. In most cases, fat-soluble vitamins must be coupled with a protein in order to be transported through the organism. This means they are solubilized and transported by carrier proteins to exert their actions.

By last, since fat-soluble vitamins can not be dissolved in water, they are not readily excreted. So they can accumulate in fatty tissues to toxic levels if taken in excess.

8 0

3 years ago

If glucose levels get too high in our body, what diseases may occur because of it?

ki77a [65]

Answer:

Hyperglycemia or high blood glucose

Explanation:

Hyperglycemia or high blood glucose occurs when there is too much sugar in the blood. This happens when your body has too little insulin (the hormone that transports glucose into the blood), or if your body can't use insulin properly. The condition is most often connected with diabetes.

Hope I helped

:)

5 0

2 years ago