9 Weeks Study Guide Part 3 SHJHS 2024

Based on the chart, a student classifies the organism as a prokaryotic cell. Is the classification correct?

• Yes. It contains a cell wall.

• Yes. It is a unicellular organism

• No. It has ribosomes that make proteins

• No. It has chloroplasts.

Which feature is unique to eukaryotic cells, making them more complex than prokaryotic cells?

• presence of ribosomes

• presence of lysosomes

• presence of heredity material in the form of DNA

• presence of cytoplasm enclosed by a cell membrane

Unlike animal cells that excrete metabolic wastes by diffusion through their cell membranes, plant cells store their wastes. Examine the plant cell. Which organelle stores wastes in the plant cell?

• cell wall

• chloroplast

• large vacuole

• nucleus

What is the primary reason viruses need host cells for replication?

• Viruses lack the cellular machinery for self-replication.

• Viruses do not possess any proteins.

• Viruses can only divide through binary fission.

• Viruses require a host to undergo mitosis.

Examine the structural components of a virus and bacteria. What prevents a virus from replicating without a host?

• presence of a protective envelope in the virus

• absence of structures that make proteins in the virus

• absence of structures that allow locomotion in the virus

• presence of a genetic material in the virus

Which characteristic do viruses share with living things?

• They both contain organelles such as ribosomes.

• They both are surrounded by a protein coat.

• They both contain genetic material.

• They both are surrounded by a cell membrane.

Which of the following is the best description of the basic structure of a virus?

• A bacteriophage surrounded by a cell membrane

• A capsid surrounded by a plasma membrane

• A microscopic cell surrounded by a cell wall

• DNA or RNA surrounded by a protective, protein coat

Match the following scienctist contribution to the cell theory

• Not the cell theory

• All organisms are made up of cells (by looking at animals)

• Hooke

• All organisms are made of cells (by looking at plants)

• Schwaan

• Discovered and named Cells

• Virchow

• All organisms are composed of one or more cells.

• Schleiden

• New cells come from preexisting cells.

What are the correct levels of organization for hepatocytes, the liver, and the gallbladder?

• hepatocytes: cells; liver: organ; gallbladder: organ

• hepatocytes: cells; liver: organ; gallbladder: system

• hepatocytes: tissues; liver: organ; gallbladder: organ

• hepatocytes: tissues; liver: system; gallbladder: organ

What evidence would prevent scientists from classifying viruses as living organisms?

• Some viruses use RNA (not DNA) as genetic material.

• Some viruses do not contain any proteins or carbohydrates.

• Viruses reproduce asexually.

• Viruses require a host cell to reproduce.