Bio Lecture test one

The following is false regarding ionic bonds 1. H2 is a good example of an ionicly bonded molecule 2. Ionic bonds disassociate into chartered ions in solution 3. most ionic bonds form salts in a solution 4. ionic bonds are formed by the transfer of electrons from one atom to another

1. H2 is a good example of an ionicly bonded molecule

An atom has an atomic mass of 30. There are 15 protons, how many electrons does it have

15

Which of the following are survival needs of the body? 1. Nutrients, water, growth and reproduction 2. Nutreints, water, atmospheric pressure, oxygen 3. Nutrients, water, movement and reproduction 4. Water, atmospheric pressure, growth and movement

2

The definition of a compound is best described as

2 or more different kinds of atoms, chemically bound together and can't be broken apart physically

dehydration synthesis reaction is

2 smaller molecules form a bond causing water loss and the production of 2 smaller molecules

Place the following in correct sequence 1. Molecules 2. Atoms 3. tissues 4. Cells 5. Organs

2, 1,4,3,5

Which of the following describes the function of heart and blood vessels?

Cardiovascular physiology

all of the following can easily be broken down excpet 1. Cellulose b. Sucrose c. Fructose d. Lactose

Cellulose

The study of large body structures, visible to the naked eye, such as the heart is called ________ anatomy.

Gross

the majority of elements existing in the human body are?

Nitrogen, oxygen, carbon, hydrogen

Choose the anatomical topic and definition that is not correctly matched. regional anatomy: study of structures in a particular type of organism gross anatomy: structures visible to the naked eye Microscopic anatomy: study of structures too small to the naked eye Embryology: Study of changes in an individual from conception to birth.

Regional anatomy

a neutral fat is a

Triglyceride

if a Ph value is 6 it is considered to be an

acid

a lipid is all of the following except

adiponyloids

An isotope is

an atom with a different number of neutrons but the same number of protons

Which of the following would not be considered to be a necessary life function

cellular permeability

enzymes all have the following characteristics except 1. they are chemically specific 2. usually named for the type of reaction they cataylze 3. chemical reaction catalyst which generates less energy to make the reaction less expeditious 4. almost always ends in ase

chemical reaction catalyst which generate less energy to make the reaction less expeditious

the HCI in the stomach is used primarily to

denature proteins

A salt is referred to as an

electrolyte

a good example of positive feedback mechanism would be?

enhancement of labor contractions

Expiration is how the body removes excessive carbon dioxide from the blood

excretion of metabolic waste

Anabolic reactions are chemical reactions of the body that build things, catabolic reactions break down things making them smaller. If the rate of anabolic reaction is faster than the catabolic reactions which if the following life functions will be accomplished?

growth

the following are considered to be made of structural proteins except 1. Hemoglobin 2. muscle 3. nails 4. hair

hemoglobin

Active electrons of an atom are found

in the valence shell level

Water is a

inorganic compound and molecule

Skin, hair, and nails are associated with the ________ system.

integumentary system

Which of the following statements is the most correct regarding homeostatic imbalance

it is considered the cause of most diseases.

The difference between kinetic energy and potential energy is

kinetic = energy in motion/ potential = stored

A necessary life function is

maintaining boundaries

the following is true about amino acids except 1. they all contain an acid group 2. only very specific combinations of proteins form them 3. they all contain an amine group 4. are the building blocks for all proteins

only very specific combinations of proteins form them

A structure this is composed of two or more tissue types that work together to perform specific functions of the body is a

organ

Forms of energy include all of the following except 1. Physiological 2. Mechanical 3. Chemical 4. electrical

physiological

It is wise to study anatomy alongside with physiology because ________.

physiology is only explainable in terms of underlying and related anatomy .

the ATP molecule is an example of ________ energy

potential

The study of kidney function is called

renal physiology

The following is true about a colloid except 1. It is always transparent 2. the solvent and solute will not settle out 3. it is considered to be heterogenous 4. sand and sugar mix is a good example of a colloid

sand and sugar mix is a good example of a colloid

One of the functional characteristics of life is responsiveness. This refers to __________________

sensing changes in the environment and then reacting or responding to them

Select the most correct statement 1. The nervous system is not a true structural organ system 2. Organ systems can be composed of cells or tissues but not both 3. the immune system is closely associated with the lymphatic system 4. Organ systems must and always operate independently of each other

the immune system is closely associated with the lymphatic system

the following Is true about DNA except

the lipids which make up DNA molecules are primarily manufactured in the nucleus of the cells.

uracil replaces ________ in RNA

thymine

Histology would be best defined as a study of ________.

tissues

Generally what is the result of the negative feedback process?

to maintain a relatively stable condition of homeostasis by maintaining a set point

if a coenzyme is present it is usually made from

vitamins

the single most abundant chemical substance in the body, 60-80% of BW

water