Answer:
Proteins are generally way too big to be able to fit through a cell membrane.
Explanation:
They cannot compress their molecules to pass through.
Answer:
The greenhouse effect is
A) human activity has no effect on elements, chemical compounds, and other forms of matter.
B) living organisms are not limited by any one nutrient.
<u>C) nutrients are circulated throughout the biosphere.
</u>
D) many nutrients do not reach toxic concentrations in the biosphere.
Explanation:
<span>The answer is D. pairs uracil with adenosine instead of thymine. Through the process of elimination, both DNA and RNA contain nitrogenous bases. However, DNA contains sugar deoxyribose within its nucleotide components while RNA contains sugar ribose. Also, DNA has 2 strands wrapped in a helix while RNA has only 1 strand. Thus, the correct choice is D. because RNA pairs uracil with adenosine instead of thymine like DNA.</span>
They have a shell, which is attached to their body, unlike other creatures. <span />
