B4A

B4A A student groups different types of cells as shown.

Which table headings should the student use for the two groups?

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B4A The picture shows a student using a microscope to study a prepared slide of a single-celled organism .

A single-celled organism can be classified as a prokaryote based on the absence of -

• a cell membrane

• ribosomes

• chromosomes

• a nucleus

B4A Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks.

Which of these correctly identifies the two cells described in the table?

• Cell 1 is eukaryotic, and Cell 2 is prokaryotic.

• Cell 1 is prokaryotic, and Cell 2 is eukaryotic

• Both Cell 1 and Cell 2 are eukaryotic

• Both Cell 1 and Cell 2 are prokaryotic

B4A Both euglena and cyanobacteria are photosynthetic unicellular organisms found in pond water.

The feature that distinguishes euglena from cyanobacteria is the -

• ability to maintain homeostasis

• presence of ribosomes

• ability to reproduce

• presence of a nuclear membrane