What is essential to the proper functioning of ALL prokaryotic and eukaryotic organisms?
Biology Keystone Practice - Module 1

Flashcard
•
Biology
•
9th - 10th Grade
•
Hard
Rachel Homan
FREE Resource
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23 questions
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1.
FLASHCARD QUESTION
Front
Back
ATP
Answer explanation
While not all organisms need oxygen, carbon dioxide, or table salt to survive, All organisms use ATP for energy.
2.
FLASHCARD QUESTION
Front
Which statement BEST compares eukaryotic cells and prokaryotic cells?
Back
Eukaryotic cells contain a distinct central organelle, and prokaryotic cells do not.
Answer explanation
Eukaryotic cells contain a NUCLEUS that holds and protects the DNA. This is a big difference between them and their more simplistic prokaryotic ancestors.
3.
FLASHCARD QUESTION
Front
Lungs and capillaries both have porous linings that allow certain substances to move into or out of the structures. Which function do these porous linings MOST LIKELY serve in living organisms?
Back
gas exchange
Answer explanation
In the lungs, oxygen from the environment is exchanged for carbon dioxide in the blood. This is essential for cellular respiration to occur.
4.
FLASHCARD QUESTION
Front
Which property of water is MOST responsible for plants being able to transport water from their roots to their leaves?
Back
the attraction between molecules
Answer explanation
This is called capillary action. Water molecules are attracted to each other and other substances due to hydrogen bonding. These joint forces pull water upward through thin tubes.
5.
FLASHCARD QUESTION
Front
Back
Answer explanation
6.
FLASHCARD QUESTION
Front
Which process BEST describes the assembly of proteins from amino acids?
Back
Monomers are linked to form a polymer.
Answer explanation
All polymers are made of repeating units called monomers. Proteins are a class of polymers built of monomers called amino acids.
7.
FLASHCARD QUESTION
Front
Which statement BEST compares a carbohydrate and a nucleic acid?
Back
Carbohydrates store energy and nucleic acids store genetic information.
Answer explanation
Carbohydrates (sugars) are the main source of energy for organisms. Nucleic acids (DNA & RNA) store your genetic information. Some proteins (transport proteins) assist in diffusion while another kind (enzymes) assist chemical reactions.
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