NU 545-Unit 1-QUESTIONS WITH ALL
CORRECT ANSWERS!!
Metabolic Absorption
One of the eight chief cellular functions - cells taking in and using nutrients and other substances
from their surroundings-
Perixisomes
microbodies which are membrane-bound organelles that contain several oxidative enzymes-
Contain enzymes that use oxygen to remove hydrogen atoms from specific substrates in an
oxidative reaction that produces hydrogen peroxide
Lysosomes
released during cell injury and is capable of cellular autodigestion-- Also where lipids
accumulate
Nucleolus
small, dense structure composed largely of RNA most of the cellular DNA and the DNA-binding
proteins, the histones, that regulate its activetu
Nucleus
cell division and control of genetic information
Lipids and Proteins
the major chemical components of the cell membrane
Platelet-derived growth factor
, Stimulates the production of connective tissue cells and neuroglial cells
Cell Communication
maintains homeostasis and regulates growth, division, developments and organization into
tissues. Also coordinates functions. It occurs in 3 ways
Chemical Signaling
Communication at a distance
Paracrine signaling
secrete mediators that are absorbed or destroyed
Autocrine signaling
produce signals that they themselves respond to
Hormonal signaling
endocrine cells secrete hormones to produce response in another set of cells
Neurohormonal signaling
hormones released by neurosecretory neurons
Active Transport
Movement of substance across a membrane by carrier protein that requires expenditure of energy
for activation. Only occurs across living membranes. Receptors must recognize and bind with the
substance to be transported
Cytokines
CORRECT ANSWERS!!
Metabolic Absorption
One of the eight chief cellular functions - cells taking in and using nutrients and other substances
from their surroundings-
Perixisomes
microbodies which are membrane-bound organelles that contain several oxidative enzymes-
Contain enzymes that use oxygen to remove hydrogen atoms from specific substrates in an
oxidative reaction that produces hydrogen peroxide
Lysosomes
released during cell injury and is capable of cellular autodigestion-- Also where lipids
accumulate
Nucleolus
small, dense structure composed largely of RNA most of the cellular DNA and the DNA-binding
proteins, the histones, that regulate its activetu
Nucleus
cell division and control of genetic information
Lipids and Proteins
the major chemical components of the cell membrane
Platelet-derived growth factor
, Stimulates the production of connective tissue cells and neuroglial cells
Cell Communication
maintains homeostasis and regulates growth, division, developments and organization into
tissues. Also coordinates functions. It occurs in 3 ways
Chemical Signaling
Communication at a distance
Paracrine signaling
secrete mediators that are absorbed or destroyed
Autocrine signaling
produce signals that they themselves respond to
Hormonal signaling
endocrine cells secrete hormones to produce response in another set of cells
Neurohormonal signaling
hormones released by neurosecretory neurons
Active Transport
Movement of substance across a membrane by carrier protein that requires expenditure of energy
for activation. Only occurs across living membranes. Receptors must recognize and bind with the
substance to be transported
Cytokines
