AP Biology Unit 4 Exam

What is the longest phase of the cell cycle?

• M phase

• Interphase

• Prophase

• Telophase

Tags

NGSS.HS-LS1-4

What two hormones from the pancreas are responsible for regulating the glucose level in the blood?

• Oxytocin and Growth Factor

• Insulin and Glucagon

• Insulin and Oxytocin

• Glucagon and Growth Factor

Tags

NGSS.HS-LS1-3

What is the primary role of checkpoints in the cell cycle?

• Increase chromosome condensation

• Regulate progression through the cell cycle

• Stimulate DNA replication

• Trigger apoptosis

Which stage of mitosis involves sister chromatids separating?

• Metaphase

• Prophase

• Anaphase

• Telophase

Tags

NGSS.HS-LS1-4

During which phase is DNA replication completed?

• G1 phase

• S phase

• G2 phase

• M phase

What type of feedback decreases the effect of a stimulus?

• Positive feedback

• Negative feedback

• Direct signaling

• Local signaling

Tags

NGSS.HS-LS1-3

Which is an example of positive feedback?

• Blood clotting

• Sweating

• Breathing rate adjustment

• Regulation of blood glucose

Tags

NGSS.HS-LS1-3

What role do ligands play in signal transduction?

• Act as secondary messengers

• Bind to receptors to initiate signaling

• Directly alter gene expression

• Maintain homeostasis

Which type of receptor is located within the cytoplasm or nucleus?

• GPCR

• Ligand-gated ion channel

• Intracellular receptor

• Plasmodesmata

What is a second messenger in signal transduction?

• DNA

• cAMP

• Ligand

• Kinase