To perform active transport, cells use what?

Why is water balance different for cells that have walls as compared to cells without walls?

Microscopes should be carried by the A) base and neck. B) ocular and neck. C) eyepiece and ocular. D) illuminator and precipitator.

A ferret gamete will have: Group of answer choices: O 40 replicated chromosomes O 40 unreplicated chromosomes O 20 replicated chromosomes O 20 unreplicated chromosomes O 20 pairs of sister chromatids O 20 pairs of homologous chromosomes

What did Charles Darwin mean when he stated that some organisms were 'more fit' than other organisms? A) some organisms were heavier and stronger B) some organisms were more likely to reproduce C) not all organisms had the same natural life span D)

Nitrogen fixation is performed by bacteria in nodules on the roots of legumes. What types of plants are legumes?

What happens when one air mass meets another? a. they both die out b. they both become hurricanes c. there is a storm d. none of the above

The structure of a water molecule is two oxygen atoms bonded to the hydrogen atom. TRUE FALSE

What part of the brain is involved in short term memory

Year old white male arrives in your clinic with general complaints of slight abdominal discomfort. he has a known history of smoking two packs per day for 40 years and hypertension.

What effect does the loss of trees and forest have on humans