Biology assistance required in aisle three please?

I know it's only four questions but I am having sooo much trouble with it, every time i choose an answer i feel like it's gonna be wrong!!!!!


1.

A gene is a segment of DNA that controls the production of _____.
(1 point)

*

carbohydrates
*

microtubules
*

centromeres
*

proteins

2.

If the sides of a cell double in length, its surface area becomes _____ times as large.
(1 point)

*

two
*

four
*

six
*

eight

3.

The longest phase of the cell cycle is _____.
(1 point)

*

prophase
*

interphase
*

metaphase
*

mitosis

4.

A chromatid is attached to a spindle fiber by the _____.
(1 point)

*

nucleolus
*

deep furrow
*

centromere
*

centriole
 
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