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stealth61 [152]
3 years ago
12

A student explains the formation of the planetary system as follows.

Biology
1 answer:
Galina-37 [17]3 years ago
4 0
<span>A. The nebula contracts and shrinks instead of expanding

</span><span>Nebula is the cloud of interstellar dust and gas that forms a star. It is collborately shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entites. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.</span>
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At what ph is enzyme A working at its maximum rate
crimeas [40]
Enzymes are also known as  Biological catalysts. An enzyme working at its maximum possible rate, where the substrate concentration is in excess is <span>V max.

</span><span>The reaction is slow because the molecules are moving slowly and they will not often collide with the active site of an enzyme, so the binding of an enzyme and substrate is rare.</span>
5 0
3 years ago
The reproductive structures used by cycads are called?
Lerok [7]
D. Cones
Cycads are basically composed of woody plants which have roots, a stem, leaves and reproductive structures called Cones. These cones differ from each other depending on the plant whether it is female or male. These cones vary from shape, size, color, etc. based on the sex of the plant.
8 0
3 years ago
What is the degenerative condition in which blisterlike sacs (cysts) containing urine form on the kidneys and obstruct urine dra
nataly862011 [7]

Answer:

<u>B) Polycystic kidney disease</u>

Explanation:

<u>A) Hypospadias</u>

It is a congenital disease characterized by an abnormal urethral opening on the dorsum of penis.

<u>B) Polycystic kidney disease</u>

It is a disease characterized by the multiple cysts in the kidney as implied by the name.

<u>C) Cystitis</u>

It is defined as the infection of urinary bladder.

<u>D) Dysuria</u>

It is defined as painful urination. It can be due to infection or other underlying disease.

<u>E) Epispadias</u>

It is a congenital disease characterized by an abnormal urethral opening on the ventral surface of penis. It is much less common than hypospadias.

<u>CORRECT ANSWER</u>

From the options, the most appropriate answer is <u>B) Polycystic kidney</u> as it is a disease characterized by the formation of cysts in the kidney. These cysts obstruct urinary flow.

7 0
4 years ago
How did Mendel’s results from dihybrid crosses help him develop the law of independent assortment?
mart [117]

Explanation:

The out come that mendel's observed from dihybrid crosses confirmed that each trait could be described by a pair of factors that segregated to form progeny (his first law) and further suggested that factors for multiple traits segregated independently, thus forming the basis for mendel's second law of inheritance

Hope this will help you analyse your answer

4 0
3 years ago
Where does The energy come from to heat the oceans
Daniel [21]

Answer:

the sun

Explanation:

7 0
3 years ago
Read 2 more answers
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