Question

QUESTION 1

1. A group of cells that are similar in structure and work together to perform a common function are referred to as a(n)

   		tissue
   		community
   		organ system
   		organism
   		organ

1 points   

QUESTION 2

1. A nucleolus is

   		the area in a prokaryote where DNA is concentrated.
   		an extra nucleus in the cell.
   		an area where the nucleus is synthesized.
   		a membrane-bound organelle.
   		an area in the nucleus where ribosomes are made.

1 points   

QUESTION 3

1. A student is describing the tissue that makes up the walls of the alveoli in the lungs. It appears that these walls are composed of flattened cells arranged in a single layer to facilitate gas exchange. Which one of the following terms best describes this tissue?

   		simple columnar
   		stratified squamous
   		stratified cuboidal
   		simple cuboidal
   		simple squamous

1 points   

QUESTION 4

1. About 55% of whole blood is ________, which is/are mostly made up of water.

   		white blood cells
   		plasma
   		clotting proteins
   		hematocrit
   		hemoglobin

1 points   

QUESTION 5

1. All of the following are types of connective tissue EXCEPT which one?

   		muscle
   		cartilage
   		adipose
   		blood
   		bone

Answer 1

Q1.Tissues

Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.

Q2.Neucleolus is a small dense spherical structure in the nucleus of a cell during interphase.

An area in the nucleus where ribosomes are made.

Q3.stratified cuboidal

The respiratory or gas-exchange surface consists of millions of small sacs, or alveoli, lined by a simple squamous epithelium. This epithelium is exceedingly thin to facilitate diffusion of oxygen and CO₂. The alveolar walls also contain cuboidal surfactant-secreting cells.

Q4.About 55% of whole blood is PLASMA, which is/are mostly made up of water.