Category 1 Part 2 (transport, mitosis, cell diff)

Which of the following are in the correct order?

• organ system, cell, organ, tissue, organism

• cell, organ, tissue, organ system, organism

• cell, tissue, organelle, organ system, organism

• cell, tissue, organ, organ system, organism

Homeostasis mechanisms...

• keep everything exactly the same.

• usually operate by positive feedback systems.

• act to keep the internal environmental conditions outside the normal range

• is the ability to maintain a relatively stable internal environment

• A

• B

• C

• D

Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms?

• carbohydrates
• nucleic acids
• proteins
• lipids

Which cell part is present in eukaryotic cells, but not in prokaryotic cells?

• cell membrane
• cell wall
• cytoplasm
• nucleus

What is the capsid of a virus?

• the disease it causes
• the receptors to which it binds
• the genetic material
  
• its protein coat

Which of the following is a possible result of a disruption in the cell cycle?

• cancer
• photosynthesis
• cellular respiration
• protein synthesis

Cell have several mechanisms for regulating their internal environments. Which of these mechanisms involved in maintaining homeostasis requires energy?

• osmosis

• diffusion

• active transport

• passive transport

This cell is undergoing mitosis.  What stage of mitosis is shown?

• prophase
• metaphase
• anaphase
• telophase

This diagram shows the cell cycle.

Which of the following activities occur in the S phase?

• Replication of the DNA
• Growth of the cell
• Formation of the mitotic spindle
• Breakdown of the nuclear membrane