Question

1. look at the following chemical reaction and determine which kind of reaction it is. co₂ + h₂o → h₂co₃

a. synthesis
b. decomposition
c. exchange
d. sagittal

1. in gatorade, there is sodium and potassium. they are both ions with the following chemical symbols: na⁺ and k⁺. they are examples of:

a. anions
b. cations
c. electrolytes
d. protons

1. if a cell is put in a solution of distilled (pure) water, we say the environment of the cell is:

a. isotonic
b. hypertonic
c. hypotonic
d. metatonic

1. what will happen to the cell in the above question?

a. plasmolysis (swell)
b. crenation (lose water)
c. shrink
d. stay the same

1. humans have 46 chromosomes, however the sperm and egg each have only 23 chromosomes. therefore the sperm and egg are:

a. somatic
b. haploid
c. epithelial
d. diploid

1. when the cell uses energy (atp) to transport materials into a cell, it is using which form of transport?

a. active transport
b. facilitated diffusion
c. osmosis
d. diffusion

Explanation:

Question 5

A synthesis reaction combines substances to form a new compound. Here, \( \ce{CO_2} \) and \( \ce{H_2O} \) combine to form \( \ce{H_2CO_3} \), so it's a synthesis reaction. Decomposition is breaking down, exchange involves swapping ions, and sagittal is a anatomical term, not a reaction type.

Cations are positively charged ions. \( \ce{Na+} \) and \( \ce{K+} \) have positive charges. Anions are negative, electrolytes are substances that ionize in solution (but here the ions themselves are cations), and protons are subatomic particles, not these ions.

Distilled water has a lower solute concentration than the cell's interior. A hypotonic solution has less solute (more water) outside the cell. Isotonic has equal solute, hypertonic has more solute outside, and metatonic is not a standard term for tonicity.

Answer:

a. Synthesis

Question 6