3 years ago

Tim does a study to determine whether or not cigarette smoking decreases speed in track runners

1 answer:

5 0

Cigarette smoking decreases speed in track runner, due to the fact that their lungs have black spots. Making it harder for them to breathe. And harder to breathe causing slowing in speed.

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Vascular plants, like Fern, show alternation of generation. which represents a Gamo type in the life of fern? a. rhizomes b. Pro

Elan Coil [88]

Answer: (B) Prothallus

Explanation: Prothallus is the gametophyte stage in the life of <u>a fern or other pteridophyte</u>.

8 0

3 years ago

What human cell has the largest surface area to volume ratio? And what is the ratio

sergiy2304 [10]

The human cell has the largest surface area to volume ratio is Sperm cell or spermatozoa and its ratio is 1.55

<u>Explanation:</u>

Spermatozoa is a uni-flagellar motile sperm cell that basically determines the sex of an offspring. It moves from the haploid male gamete,its contributes in 1/2 nuclear genetic information to diploid.

The surface area of sperm cell is measured by micro-metric method or electron mircographs using stereo-logical method. While the volume will be measured by stereology or radio label volume exclusion method. The volume and surface area inversely proportional to cell size.