Midterm

A  False

B  True

A  False

B  TRUE

A  TRUE

B  False

A  lysosomes

B  smooth ER

C  rough ER

D  nuclei

A  nuclear envelope

B  plasma membrane

C  vacuole

D  Golgi apparatus

A  cell walls

B  organelles

C  a plasma membrane

D  a nuclear envelope

A  energy input

B  transmembrane proteins

C  membrane

D  concentration gradient

A  simple diffusion

B  osmosis

C  facilitated diffusion

D  active transport

A  the movement of a substance against the concentration gradient

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

C  diffusion of a solute through water

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

E  the active transport of water

A  hypotonic

B  isotonic

C  hypertonic

A  Ionic bonds

B  Hydrophobic interactions

C  Hydrogen bonds

D  Covalent bonds

A  integral

B  transmembrane

C  peripheral

A  Three phosphate groups

B  A different base

C  No phosphate groups

D  More carbon-carbon double bonds

A  Backbone bonds

B  Sugars

C  Phosphate groups

D  Nitrogenous bases

A  CGATTAGT

B  GCGAATGA

C  GCUAAUCA

D  GCTAATCA

A  catalyze reactions

B  carry genetic information

C  form a double helix

D  be its own template for replication

A  formed secondary structure

B  been denatured

C  been folded into proper functional shape

D  formed primary structure

A  quaternary structure

B  all of these

C  secondary structure

D  tertiary structure

A  quaternary

B  primary

C  secondary

D  tertiary

A  glycogen

B  glucose

C  cellulose

D  lactose

E  starch

A  glycogen

B  keratin

C  starch

D  chitin

A  steroids

B  polysaccharides

C  polypeptides

D  phospholipids

A  have a low melting point

B  are densely packed

C  are liquid at room temperature

D  are sharply bent

A  8

B  6

C  5

D  4

A  DNA

B  lipid

C  protein

D  RNA

A  is more acidic.

B  has a lower concentration of hydrogen ions.

C  is less toxic.

D  has a higher concentration of oxygen atoms.

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

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

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

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

A  DNA from an onion

B  melted butter

C  sugar from an orange

D  protein from a steak

A  Water has a high heat of vaporization

B  Hydrophobic interactions

C  Surface tension

D  Sea water acts as a solvent

E  Water forms hydration shells

A  oxygen

B  nitrogen

C  hydrogen

D  sulfur

E  carbon

A  their opposite charges.

B  hydrophobic interactions.

C  neutron interactions.

D  their sharing a pair of valence electrons.

A  Phosphate

B  Methyl

C  Hydroxyl

D  Carbonyl

A  double bond

B  hydrogen bond

C  ionic bond

D  covalent bond

A  evolution

B  preservation.

C  preconception

D  natural history.

A  Amazon River Basin

B  School of piranhas

C  3 toed sloths

D  Endocrine system

E  Jaguars, giant anteaters, macaw parrots, capybara rodents

A  Sensitivity

B  Organization

C  Homeostasis

D  Metabolism

A  to respond

B  to metabolize

C  to grow

D  to be organized

E  All of the choices are characteristics of living organisms.

A  They are made of cells or cell products.

B  They are the products of evolution.

C  They have a cell wall as an outer boundary.

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

A  It is not testable.

B  The results are not repeatable.

C  There is no way to invalidate it.

D  There are many other potential hypotheses.

A  Germination rate

B  Direct sunlight

C  Artificial light

D  Seeds in the dark

E  Moisture

A  Yes, because there is one variable and a control

B  No, because there is not more than one variable

C  Yes, because there is more than one variable.

D  No because there is only one variable and a control

A  Individuals with access to fluoridated water.

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

C  Individuals with access to water with no fluoride added.

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

A  altered variable

B  control

C  stable variable

D  experimental variable