Keystone Biology Basic Biological Principles

Which characteristic is shared by all organisms?

• ability to reproduce

• use of specialized cells

• ability to convert light into energy

• use of nuclei to direct cell activities

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Which statement describes how organelles aid in transporting proteins in eukaryotic cells?

• Mitochondria transport ribosomes to the endoplasmic reticulum.

• Lysosomes attach free-floating amino acids to mRNA molecules

• The golgi apparatus joins free-floating phosphates to ADP molecules.

• Membrane-enclosed proteins leave the ER and merge with the Golgi apparatus.

Which of the following is essential to proper functioning of all prokaryotic and eukaryotic organisms? (BIO.A.1.1.1 2019)

• O₂

• CO₂

• ATP

• NaCl

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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? (BIO.A.1.2.2 2019)

• heat release

• gas exchange

• carbohydrate absorption

• osmotic pressure regulation

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What does Biology mean?

• study of animals

• study of life

• study of plants

• study of the world

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The shivering mechanism in bumblebees often serves the same purpose that it does in mammals. During which condition will the action of shivering most help a bumblebee to maintain homeostasis?

• decrease in available oxygen

• low environmental temperature

• uncontrolled rise in core temperature

• depletion of oxygen in muscle tissues

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NGSS.HS-LS1-3

These structures with specific functions are found within cells.

• tissues

• organs

• organelles

• organ systems

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Genetic material is stored in this part of eukaryotic cells.

• nucleus

• golgi body

• mitosis

• cell membrane

These are threadlike structures of DNA that carry and store genetic information.

• chromosomes

• nucleus

• cytoplasm

• genes

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In addition to making food, photosynthesis also produces this gas.

• carbon dioxide

• oxygen

• nitrogen

• calcium

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