AP BIO- Unit 4 Test

The structure labeled 'E' is called _____ and is filled with ______

• Vacuole; lipids

• Synapse; neurotransmitters

• Membrane; lipids

• Vesicle; neurotransmitters

Any signal molecule that binds to a receptor is called a _______.

• Neurotransmitter

• Ligand

• Receptor

• Acetylcholine

In our food lab last Friday, gymnema tea binds to taste receptors and blocks _________ from binding.

• water

• glucose

• protein

• cellulose

Plant cells can exchange small soluble compounds with neighboring cells directly through junctions in the cell wall called -

• gap junctions

• thylakoids

• stomata

• plasmodesmata

A person with an insulin deficiency would have trouble regulating what condition in their body?

• Blood calcium

• Blood pH

• Blood sugar

• Blood temperature

This diagram shows transduction of a signal. How is the signal being transduced to its target location in the cell?

• A hormone is binding to an intracellular protein receptor

• Transport vesicles are passing neurotransmitters to neighboring cells

• Enzymes are passing phosphate groups down a series of proteins

• cAMP is formed activating a desired response

What important event happens during the S-phase of the cell cycle?

• The mitotic spindle forms

• The nuclear membrane breaks down

• DNA replication

• Sister chromatids separate

Which of the following describes anaphase?

• Chromatin condenses into chromosomes, and the nuclear membrane is broken down

• Sister chromatids are separated and kinetochores begin pulling chromosomes to opposite poles

• Spindle fibers attach to centromeres and begin moving sister chromatids towards the cell's equator

• Chromosomes decondense and two nuclei form within the cell

Tags

NGSS.HS-LS1-4

How much DNA should a daughter cell at the end of cytokinesis have when compared to the original parent cell?

• Half the amount

• The exact same amount

• Double the amount

Tags

NGSS.HS-LS1-4

What is the end result of mitosis?

• An undifferentiated stem cell

• 4 genetically unique haploid cells

• 2 genetically identical diploid cells

• 2 genetically unique daughter cells

Tags

NGSS.HS-LS1-4