Practice Questions

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#Question id: 1301

The cell walls of bacteria, fungi, and plant cells, and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following characteristics are common to all of these extracellular structures?

#SCPH05 I Biotechnology

They must block water and small molecules to regulate the exchange of matter and energy with their environment.
They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.
They are constructed of materials that are synthesized in the cytoplasm and then transported out of the cell for assembly.
They are composed of a mixture of lipids and nucleotides.

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#Question id: 256

#SCPH12 I Genetics

The tetranucleotide AGTC (in DNA) has a free hydroxyl group on

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#Question id: 289

#SCPH01 Biochemistry

Which of the following statements describes a covalent bond between Carbon and Hydrogen:

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#Question id: 1615

#SCPH05 I Biotechnology

Which of the following statements is TRUE of C3b?

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#Question id: 4964

#SCPH06 I Botany

Which of the following statements provides the strongest evidence that prokaryotes evolved before eukaryotes?

TLS Online TPP Program

#Question id: 11457

#I Life Science/ Life Sciences Group – I-V

Dizziness is a perceived sensation that can occur when ________.