Bio Exam 1 Shane
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- The Central Dogma directly concerns?
- Genetics
- a successful scientific experiment will result only in?
- rejection of 1 or more hypotheses
- Evolution
- can be caused by natural selection
- Homologous structures among animals provide evidence for evolution how?
- these structures are similar in two more species due to common origin
- First step of sci methond?
- observation
- When is was shown that animals couldnt reproduce geometrically, Darwin concluded that?
- these couldnt reach their potential because of selective action in nature
- Specific heat for water
- high because of hydrogen bonds
- darwin explained his theory of evolution in?
- On the Origin of Species
- Isotopes of the same element differ in their number of?
- Neutrons
- The functional group -COOH tends to give up a/an _____, and therefore is a weak _____.
- H+, acid
- Structures that differ in evolutionary ancestry even though they have similar functions are?
- analogous
- T or F, do monomers attached to one another in hydrolysis?
- F
- Who wrote an essay that helped Darwin formulate his theory of evolution?
- Thomas Malthus
- The dehydration Synthesis of a disaccharide from to monosaccharides is ______ and requires ______.
- An endergonic reaction, energy to break the -H and HO- bonds to form water
- How many times has flight evolved among vertebrates?
- 3
- Glycogen is
- an animal starch stored in the liver
- Starch and cellulose are both
- polymers and polysaccharides
- Hydrophobic interactions are exhibited by
- nonpolar molecules
- oxygen moves through a cell mambrane by
- diffusion
- if an aquatic organism is hypertonic to its surroundings, there is a ______ is a high concentration of solute (ions) inside compared to its surroundings.
- higher
- which of the following requires a carrier protein but no energy?
- facilitated diffusion
- Transported molecules show saturation when moved by facilitated diffusion but not if they move by passive diffusion through a protein channel.
- True
- Consider a coupled transport system dependent upon a sodium-potassium pump. when a sugar moves into the cell
- the sodium moves down its gradient and the sugar moves up its gradient
- Phospholipids are important molecules because they
- help make up our cell membranes
- functions of lipids include
- acting as a hormone
- During oxidation, molecules
- lose electrons
- Hydrophilic substances are______, and hydrophobic substances are ______.
- water-loving, water fearing
- the alpha helix and beta-pleated sheet are two kinds of _____ structure in a protein.
- secondary
- What are the nitrogenous bases contained within DNA?
- Adenine, Cytosine, Guanine, Thymine
- What is true of protein denaturation?
- It is never reversible
- The cell theory was originally developed in the
- 1800s by 3 individuals
- Nucleic acids are chains of 5-carbon sugars linked together by ____ bonds plus an organic base.
- Phosphodiester
- Double helix describes the structure of which molecule?
- DNA
- gram-positive bacteria are
- prokaryotes
- animals stored glucose in the form of
- glycogen
- a cell nucleus has ______ _______ found inside and is made up of ______ and ______.
- nuclear chromatin, DNA, protein
- What is the average yield of chemical energy for a gram of carbohydrate and a gram of fat that is utilized?
- 4 kcal and 9 kcal, respectively
- What is true of both living and nonliving things?
- they have a metabolism and are made of atoms and molecules
- the octet rule concerns?
- electrons
- In the molecule O-H-O, a - indicates the presences of _____ and represents the formation of a ______.
- electron pair/ionic bond, bon/hydroxide
- Evidence directly supporting the Endsymbiont theory includes
- that chloroplasts and mitochondria both contain DNA
- What uses action filaments?
- cilia, flagella, and muscle cell contraction
- A experiment has been conducted in which labeled proteins from both a human cell membrane and a mouse cell membrane are fused. What did this experiment show?
- Cell membranes are fluid
- Peripheral and transmembrane _____ constitute about 50% of a cell membrane
- proteins