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Bio 235 Midterm 1 Questions And Answers Well Illustrated.

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Bio 235

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bio 235 midterm 1 questions and answers well il

Institution Bio 235
Course Bio 235

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Bio 235 Midterm 1 Questions And Answers
Well Illustrated.

metabolism - correct answer. sum of al chemical processes

catabolism - correct answer. that break down molecules, releasing energy.

anabolism - correct answer. the process of building up larger molecules from smaller
ones.

3 things that effect growth in the body size - correct answer. 1. increase in the size of
existing cells
2.increase in the number of cells
3.increase in the size of material between the cells

differentiation - correct answer. unspecialized cells becomes specialized

reproduction is the formation of new cells for? (2) - correct answer. 1. tissue growth,
repair or replacement
2. production of a new individual

fluid within the cells - correct answer. intracellular fluid

fluid outside the cells - correct answer. extracellular fluid

ECF that fills narrow space between cells of tissues - correct answer. interstitial fluid

what is the monitored variable called in a feedback loop - correct answer. controlled
condition

what is the stimulus - correct answer. any disruption that changes a controlled
condition

what's the receptor - correct answer. body structure monitoring the changes of a
controlled condition and sends inputs

,what is an afferent pathway-input - correct answer. flows towards the control center
(nerve impulse or chemical signal)

what is the control center - correct answer. sets the range of values within which a
controlled condition should be maintained; evaluates the input it receives from receptors
and generates output commands when they are needed

efferent pathway - correct answer. flow away from control center to effector

effector - correct answer. body structure receiving output and brings about change
and produces a response that alters the controlled condition

negative feedback system - correct answer. reverses a change in a controlled
condition

positive feedback loop - correct answer. strengthens or reinforces a change in the
controlled condition until its interrupted-effector produces a response that reinforces the
initial change-child birth

disorder - correct answer. abnormality of a structure or function

disease - correct answer. illness characterized by a recognizable set of signs and
symptoms

symptom - correct answer. subjective changes not visible to the observer

sign - correct answer. objective changes visible to the observer (doctor)

prone - correct answer. body is lying face down

supine - correct answer. body is lying face up

ipsilateral - correct answer. same side

contralateral - correct answer. different sides

superficial - correct answer. towards the surface of the skin

deep - correct answer. away from surface of the skin

sagittal plane - correct answer. divides the body into left and right

Midsagittal (median) plane - correct answer. divides into equal left and right sides

parasagittal plane - correct answer. unequal sides left and right

,fronta (coronal plane) - correct answer. divides front and back (anterior/posterior)

transverse plane - correct answer. superior and inferior top and bottom (horizontal
plane cross-sectional)

oblique plane - correct answer. anything but 90 degrees

cranial cavity - correct answer. contains head

Vertebral (spine) cavity - correct answer. contains spinal cord and vertebral column-
continuous of the cranial cavity

Meninges - correct answer. layers of protective tissue surround the brain and spinal
cord

thoracic cavity - correct answer. chest, ribs, sternum muscles of the chest and a
thoracic portion of the vertebral column

pericardial cavity - correct answer. surrounds the heart

pleura cavity - correct answer. surrounds lungs

visceral layer of cavity - correct answer. inner layer

parietal layer of cavity - correct answer. outer layer

mediastinum cavity - correct answer. between the lugs extending from the sternum to
the vertebral column and first rib down to the diaphragm-heart, thymus, esophagus,
trachea, and BV's but not the lungs

diaphragm - correct answer. dome muscle that separates the thoracic cavity from the
abdominopelvic cavity

abdominopelvic cavity - correct answer. from the diaphragm to the groin
abdominal cavity-stomach, spleen, liver, gallbladder, small intestine, and large intestine
pelvic cavity-urinary bladder, parts of the large intestine, and internal organs of the
reproductive system

viscera - correct answer. organs inside thoracic and abdominopelvic cavities

major elements of body mass - correct answer. nitrogen, carbon, oxygen and
hydrogen

lesser elements 8 - correct answer. Calcium, Phosphorus, Potassium, Sulfur, Sodium,
Chlorine, Magnesium, Iron

, what are the three subatomic particles - correct answer. neutrons, protons, electrons

nucleus - correct answer. core of an atom

proton - correct answer. positively charged (in nucleus)

neutron - correct answer. neutral no charge (in nucleus)

electrons - correct answer. negatively charged in a cloud around the nucleus

number of protons =? - correct answer. number of electrons

atomic number is what - correct answer. number of protons/electrons

mass number - correct answer. sum of protons and neutrons

isotopes - correct answer. Atoms of the same element that have different numbers of
neutrons

radioactive isotopes (radioisotopes) - correct answer. An isotope of an atom that
spontaneously emits one or more types of radioactivity into stable configuration

half-life - correct answer. the time it takes radioactive isotope to decay into half

atomic mass/weight - correct answer. average of the natural occurring isotopes

ion - correct answer. has a positive or negative charge because it has unequal
number of protons and electrons

ionization - correct answer. the process of giving up or gaining an electron to become
stable

molecule - correct answer. when two or more atoms share an electron

compound - correct answer. substance made up of two or more different elements

free radicals - correct answer. atoms with an unpaired electron in the outermost shell
making it unstable-become stable by gaining or losing from another element (this
breaks apart important elements) UV rays, x-rays

ionic bond - correct answer. force of attraction between oppositely charged ions

cation - correct answer. positively charged ion-loses an electron

anion - correct answer. negatively charged ion-gains an electron

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