bio exam 1
Which lipids are known as energy storage molecules?
triglycerides
True or False: Homeostasis is the process by which living organisms maintain a fairly constant internal environment despite changes in the external environment.
true
In anatomical position, the humerus is [____] to the carpals.
Proximal
Ribosome
protein synthesis
Which of the following is NOT part of the anterior cavity?
Cranial cavity
List the following stages of cellular respiration in the correct order:
glycolysis, preparatory system, citric acid cycle, electron transport chain
Diffusion of molecules is always from a region of [____] concentration to a region of [____] concentration.
high; low
elastic connective
flexibility and stretch
Nervous tissue
Transmits electrical impulses
Golgi apparatus
A system of membranes that modifies and packages proteins for export by the cell
Desmosomes
Allow tissues to stretch and bend
Lysosome
An organelle containing digestive enzymes
What kingdom are humans classified as?
Animalia
Which of the following would be considered prokaryote?
Bacteria and Archaea
Both hydrogen bonds and disulfide bonds are found in which level of protein structure?
tertiary
blood
transports materials
Peroxisome
detoxifies waste
Which of the following tissue types would contain the greatest amount of collagen fibers?
Dense
Which of the following types of glands secretes its products into the bloodstream?
Endocrine glands
Gap junctions
Facilitate movement of substances between cells
Which of the following processes releases energy and breaks down macromolecules into smaller molecules?
Hydrolysis
Which cell provides the skin with a tough waterproof protein?
Keratinocytes
Which of the following would NOT be found in the dermis of the skin?
Melanocytes
Which of the following is NOT a characteristic that makes humans different than other organisms?
No membrane bound nucleus
Which of the following statements correctly describes a eukaryotic cell?
Possesses true organelles.
Mitochondria
Powerhouse of the cell, organelle that is the site of ATP (energy) production
Which of the following describes a catabolic reaction?
Releases energy
Passive transport
Requires NO energy, Movement of molecules from high to low concentration, Moves with the concentration gradient
Tight junctions
Seal plasma membranes tightly together
[____] contain substances that are destined for export from the cell.
Secretory vesicles
Which of the following is NOT characteristic of living things?
Unable to respond to the external enviorment
Which of the following accurately describes the properties of water?
Water is a polar molecule.
A negatively charged ion is formed when
an atom gains electrons.
Which of the following might occur if a protein is exposed to a drastic change in temperature or ph?
denaturation
What is the smallest level of organization capable of maintaining homeostasis?
cell
Tissues are comprised of multiple:
cells
Which one of these bonds is considered the strongest chemical bond shared between atoms?
covalent bonds
Nucleus
houses genetic information
Acids are known to [__] hydrogen ion concentration in a solution by [____] hydrogen ions.
increase; donating
Smooth ER
lipid synthesis
Cytoskeleton
maintains cell shape
H2O (Hydrogen and Oxygen) is classified as what?
molecule
Which of the following solutions has the highest hydrogen ion concentration?
ph 2 solution
A group of individuals of the same species living in the same area is known as a:
population
Bonds between phosphate groups carry
potential energy
Stratified epithelial
protection
The midsagittal plane divides the body into
right and left.
Red blood cells placed in a hypertonic solution will
shrink as water moves out of the cell by osmosis.