Cell & Tissue Basics

What is the basic structural and functional unit of all living organisms?

• tissue

• cell

• molecule

• organ

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which organelle is known as the powerhouse of the cell?

• Mitochondria

• Endoplasmic reticulum

• Golgi apparatus

• Ribosomes

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

What is the function of the cell membrane?

• Helps in photosynthesis

• Regulates body temperature

• Stores genetic information

• Controls the movement of substances in and out of the cell.

Tags

NGSS.MS-LS1-2

Pseudostratified (pseudo- = “false”) describes tissue with a single layer of irregularly shaped cells that give the appearance of more than one layer.

• True

• False

What are the main components of a cell's cytoplasm?

• DNA, RNA, lipids

• Organelles, cytosol, cytoskeleton

• Endoplasmic reticulum, Golgi apparatus, lysosomes

• Nucleus, mitochondria, ribosomes

What is the function of the endoplasmic reticulum in a cell?

• Waste removal

• Protein and lipid synthesis, and molecule transportation

• Energy production

• Cell division

Which of the following are characteristics of epithelial tissue, except?

• Covers all free body surfaces and lines organs

• ­Can regenerate easily.

• Function: reserve fuel and retain heat.

• ­Lacks blood vessels, obtains nutrients through diffusion from capillaries

Cell shapes can be squamous (flattened and thin), cuboidal (boxy, as wide as it is tall), or columnar (rectangular, taller than it is wide).

• True

• False

Which of the following are characteristics of areolar tissue, except?

•  Location: widely found under epithelia of body, surrounding organs and capillaries

•  Provides strength, elasticity, and support

• Function: it wraps and cushion organs.

•  Location: lymph nodes, bone marrow and spleen

What are the different types of tissues found in the human body?

• dermal

• epithelial, connective, muscle, nervous

• skeletal

• vascular

Tags

NGSS.HS-LS1-4