Additional Science learned for TEAS (from practice tests)

DNA is stored in the nucleus and stores small amounts in what organelle?

mitochondria

The covalent bonds between sugars in a polysaccharide are called what?

Glycosidic bonds

Antibodies bind to ______.

pathogens

When antibodies bind to pathogens, what 2 possible things can occur?

mark them for phagocytosis; engulf the pathogen to neutralize

Define Meissner’s corpuscle

nerve endings in dermis; sensitive to pressure

Define Dermal papillae

nipple/finger like projections in dermis that shoot upwards to epidermis (create fingerprints!)

Define arrector pili

small muscles in dermis attached to hair follicles (creates goosebumps)

What are the by-products of respiration?

CO2 and water

What do Viruses contain? What do they not have?

DNA or RNA; don’t have organelles

Afferent = ?

towards (arrives)

Efferent =

away (exits)

What is a confounding variable?

a variable outside the focus of study; can affect results

A supersaturated solution is when …

the solvent contains more solute than it can normally dissolve (at a given temperature; glass of water is over the rim, one touch will make it spill)

What state of matter has the highest kinetic energy?

gas (plasma state)

What phase change has the largest increase in kinetic energy?

sublimation (solid → gas)

Substitution reaction is when ?

one compound is replaced by another (in a chemical reaction)

Elimination reaction is when ?

a compound loses atoms (forming a double bond or triple bond)

An Addition reaction is when ?

atoms are added (breaks double or triple bonds usually)

In male reproductive system, what structure only functions to store sperm (as it matures) and transport it to the vas deferens?

epididymis

What cells within the dermis plays a role in the inflammatory response?

mast cells