What is a common property shared by the cells of all living things?
2024--Semester 1 Biology Exam Review

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Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
All living cells contain DNA composed of adenine, thymine, guanine, and cytosine.
2.
FLASHCARD QUESTION
Front
What is a nucleotide?
Back
A nucleotide is the basic building block of DNA, consisting of a phosphate group, a sugar (deoxyribose), and a nitrogenous base.
3.
FLASHCARD QUESTION
Front
What is the primary source of energy for nearly all life on Earth?
Back
The primary source of energy for nearly all life is the Sun.
4.
FLASHCARD QUESTION
Front
How do green plants utilize solar energy?
Back
Green plants convert radiant energy from the Sun into chemical energy in the form of organic compounds through photosynthesis.
5.
FLASHCARD QUESTION
Front
What role do cyclins play in the cell cycle?
Back
Cyclins are proteins that bind to enzymes to signal the cell to progress through stages of cell replication.
6.
FLASHCARD QUESTION
Front
What happens to cyclins at the end of the cell cycle?
Back
At the end of the cell cycle, cyclins degrade to prevent further signaling for the cell to divide.
7.
FLASHCARD QUESTION
Front
What can uncontrolled production of cyclins lead to?
Back
Uncontrolled production of cyclins can lead to the formation of tumors.
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