Midterm

A  True

B  False

A  False

B  TRUE

A  False

B  TRUE

A  smooth ER

B  nuclei

C  lysosomes

D  rough ER

A  Golgi apparatus

B  plasma membrane

C  nuclear envelope

D  vacuole

A  organelles

B  a nuclear envelope

C  cell walls

D  a plasma membrane

A  energy input

B  membrane

C  concentration gradient

D  transmembrane proteins

A  active transport

B  simple diffusion

C  osmosis

D  facilitated diffusion

A  diffusion of a solvent across a semipermeable membrane down a concentration gradient

B  the movement of a substance against the concentration gradient

C  the active transport of water

D  the net movement of a substance from higher to lower concentration

E  diffusion of a solute through water

A  hypotonic

B  hypertonic

C  isotonic

A  Ionic bonds

B  Hydrogen bonds

C  Hydrophobic interactions

D  Covalent bonds

A  peripheral

B  integral

C  transmembrane

A  No phosphate groups

B  A different base

C  Three phosphate groups

D  More carbon-carbon double bonds

A  Backbone bonds

B  Sugars

C  Nitrogenous bases

D  Phosphate groups

A  GCGAATGA

B  GCTAATCA

C  GCUAAUCA

D  CGATTAGT

A  carry genetic information

B  be its own template for replication

C  catalyze reactions

D  form a double helix

A  formed secondary structure

B  been folded into proper functional shape

C  been denatured

D  formed primary structure

A  secondary structure

B  tertiary structure

C  quaternary structure

D  all of these

A  primary

B  secondary

C  tertiary

D  quaternary

A  glucose

B  cellulose

C  starch

D  glycogen

E  lactose

A  glycogen

B  keratin

C  starch

D  chitin

A  phospholipids

B  polysaccharides

C  polypeptides

D  steroids

A  have a low melting point

B  are densely packed

C  are sharply bent

D  are liquid at room temperature

A  4

B  5

C  8

D  6

A  lipid

B  DNA

C  protein

D  RNA

A  has a lower concentration of hydrogen ions.

B  is more acidic.

C  is less toxic.

D  has a higher concentration of oxygen atoms.

A  Polar molecules are attracted to ions and polar compounds, making these compounds soluble.

B  Hydrogen bonds absorb heat when they break and release heat when they form. This helps to minimize temperature changes.

C  Hydrogen bonds hold water molecules together; many hydrogen bonds must be broken for water to evaporate.

D  The surface tension created by hydrogen bonds is greater than the weight of the lizard initially.

A  melted butter

B  protein from a steak

C  DNA from an onion

D  sugar from an orange

A  Hydrophobic interactions

B  Water forms hydration shells

C  Surface tension

D  Sea water acts as a solvent

E  Water has a high heat of vaporization

A  hydrogen

B  nitrogen

C  sulfur

D  carbon

E  oxygen

A  neutron interactions.

B  their opposite charges.

C  hydrophobic interactions.

D  their sharing a pair of valence electrons.

A  Hydroxyl

B  Carbonyl

C  Phosphate

D  Methyl

A  ionic bond

B  double bond

C  covalent bond

D  hydrogen bond

A  preservation.

B  evolution

C  preconception

D  natural history.

A  Endocrine system

B  Jaguars, giant anteaters, macaw parrots, capybara rodents

C  Amazon River Basin

D  3 toed sloths

E  School of piranhas

A  Homeostasis

B  Metabolism

C  Organization

D  Sensitivity

A  All of the choices are characteristics of living organisms.

B  to respond

C  to grow

D  to metabolize

E  to be organized

A  They are made of cells or cell products.

B  They are the products of evolution.

C  They are composed of carbon, hydrogen, oxygen, and nitrogen.

D  They have a cell wall as an outer boundary.

A  There is no way to invalidate it.

B  The results are not repeatable.

C  It is not testable.

D  There are many other potential hypotheses.

A  Germination rate

B  Direct sunlight

C  Artificial light

D  Seeds in the dark

E  Moisture

A  No because there is only one variable and a control

B  Yes, because there is one variable and a control

C  No, because there is not more than one variable

D  Yes, because there is more than one variable.

A  Individuals with access to water with no fluoride added.

B  Individuals who have fluoride added to their toothpaste but not their water.

C  Individuals with access to fluoridated water.

D  Individuals with access to differing amounts of fluoride in the water.

A  stable variable

B  experimental variable

C  control

D  altered variable