Cells (interlinked) and systems

Which of the following is NOT true of the cell membrane?

• is the outermost structure of the cell

• is semi permeable

• allows substances to move between nucleus and cytoplasm

• serves as the cells boundary

Answer explanation

the nuclear envelope is responsible fo moving substances between the nucleus and cytoplasm.

vesicles are located in the ____ of the cell

• endoplasmic reticulum

• golgi apparatus

• ribosomes

• mitochondria

Answer explanation

"endoplasmic reticulum: composed of membranous flattrenes sacs, cylinders, and fluid filled bubble-like sacs calles VESICLES."

located on page #64 A, 1-A

elongated, bean shaped, membranous sacs. cell's "powerplant" or "powerhouse"

this action refers to the movement of WATER through a semi permeable membrane from an area of low soluter concentration to an area of higher solute concentration.

• permeation

• diffusion

• perspiration

• osmosis

Answer explanation

page 68 A, 2-A

this action refers to the movement of ATOMS, MOLECULES, or IONS move from an area of high concentration to an area of low concentration.

Answer explanation

page 67 A, 1-A

the following is TRUE of smooth muscle

• is involuntarily controlled

• most abundant tissue by weight

• covers the inner surface of the body cavities

• stores fat

Answer explanation

page 70 A, 3-B, iv.

the following is TRUE of smooth muscle

• is involuntarily controlled

• most abundant tissue by weight

• covers the inner surface of the body cavities

• stores fat

Answer explanation

page 70 A, 3-B, iv.

the thymus is a member of what organ system?

the following options are all responsibilities of the cardiovascular system. (select all that apply)

• breakdown of substances into energy

• carries Co2 from the body to lungs

• carries nutrients from the digesative system to body's cells

• defends body against infection by removing pathogens

• carries hormones from endocrine glands to their target cells

Answer explanation

page# 73 A,6- A-F

this type of cell tissue cannot reproduce (cell or system will be accepted.)