A & P – Chapter 3 – Flashcards

The success of DNA replication is assessed during the ______ phase.

The cell cycle is regulated by checkpoints during the _______ phases.

A eukaryotic cell that receives a "go-ahead" signal at the G1 checkpoint of the cell cycle will

In what phase does preparation for cell division occur?

After cytokinesis, the cell enters the _____ phase.

Simple diffusion is defined as the movement of

When sugar is mixed with water, equilibrium is reached when

The rate of diffusion is affected by what three things?

True or False: The molecules in a solid lump of sugar do not move.

True of False: Diffusion is one of the processes whereby materials are exchanged between a cell and its environment.

What is the order of the phases of the cell cycle?

The division of the cytoplasm is called

What is the order of the phases of mitosis?

DNA replication occurs in which phase?

True or False: Mitosis and cytoplasmic division result in the formation of two genetically identical cells.

Lysosomes are membrane-bound vesicles that arise from the

The lysosome contains ________ enzymes.

Which of the following cells will be expected to contain the most active lysosomes? A) brain cell B) skin cell C) kidney cell D) intestinal cell E) phagocytosing white blood cell

True or False: Lysosomes function in the destruction and recycling of old organelles.

True or False: The enzymes found in the lysosomes were formed in the endoplasmic reticulum.

Which of the following events do NOT occur in prophase of mitosis? A) DNA condenses to form chromosomes B) nuclear membrane breaks down C) nucleolus breaks down D) chromosomes are replicated E) mitotic spindle begins to form

The mitotic spindle fibers attach to chromosomes via special structures termed

Which of the following statements about microtubules during anaphase is TRUE? A) those attached to chromosomes elongate, while those that are unattached shorten B) those attached to chromosomes shorten, while those that are unattached elongate C) both attached and unattached microtubules shorten D) both attached and unattached microtubules elongate E) both attached and unattached microtubules elongate at first and then shorten

True or False: Centromeres divide during metaphase.

True or False: Cytokinesis in plant cells occurs by means of a cleavage furrow.

Phagocytes are attracted by all of the following except A) phospholipids released by injured cells B) components of the complement system C) chemical products of microorganisms D) lysosomes

In phagocytosis the digested contents are eliminated by

A lysosome

True or False: Complement factor C3b coats a bacterium and binds to C3b receptors on phagocytes, making the bacterium more susceptible to being phagocytized.

True or False: A phagosome containing the engulfed bacteria combines with a lysosome containing enzymes to produce a phagolysosome.