Midterm part2

scientist who first discovered a dead cork cell he named it the “cell”

hooke

scientist who states “all animals are composed of cells”

schwann

during this stage of mitosis the daughter cell becomes separate structures (final stage)

Telephase

scientist who stated “cells can only come from existing cells”

virchow

during this state of mitosis, the chromosomes become aligned in the middle of the spindle

metaphase

during this stage of mitosis the chromosomes become visible and the nuclear envelope begins to disappear

prophase

during this stage of mitosis, the chromosomes move to the oppose poles of the cell

anaphase

this is the movement of the molecules from a higher concentration towards a region of lower concentration that involves special carrier molecules within the cell membrane

facilitated diffusion

process by which substances move through a cell membrane that involves the formation of vacuoles

endocytosis

is the scattering of molecules from a region of higher concentration to a region of lower concentration

diffusion

is responsible for the movement of molecules or ions from regions of lower concentration toward regions of higher concentration, that requires energy

active transport

the diffusion of water molecules through a selectively permeable membrane

osmosis

movement of material through a membrane as a result of hydrostatic pressure

filtration

this type of substance contains both carbon and hydrogen

organic substances

what is NOT an organic molecule

water

proteins that serve as catalysis, have special properties and can speed up specific chemical reactions, without being changed or used up themselves

enzymes

smallest particle of an element that has all the properties of the element

atom

sodium has 10 electrons how many electrons would be located in its last energy shell

these atoms have become electrically charged by gaining or losing electrons

ions

this type of bond is formed when atoms share electrons

covalent

this type of substance will scare below 7 on the Ph scale

acid

how many naturally occuring elements are there?

92

the urinary system is responsible for the storage and removal of urine

true

the skeletal system produces all the blood cells

true

muscles are organs

true

the nervous sytem is composed of all the glands that secrete hormones

false

the endocrine system composed of all the glands that secrete hormones

true

the reproductive system is responsible for the production of offspring

true

the digestive system is composed of the mouth, tongue, teeth, salivary glands, pharynx, esophagus, stomach, gall bladder, pancreas, small and large intestines

true

the lymphatic system protects underlying tissues, regulates body temperature and is the location for sensory receptors

false

the respiratory system allows for the exchange of gases between the air and blood.

true