Bio 111 Exam 1 Cram

Is a node on a phylogenetic tree indicative of an evolutionary relationship between organisms?

False

Is a cell wall the ONLY COMMON feature between plant cells and animal cells?

False

Which of the following is NOT part of a complete nucleotide?

6 - Carbon sugar

Which of the following does NOT contribute to an atom's overall mass?

Electrons

What type of reactions form large macromolecules like polysaccharides from monomers?

Dehydration

Does sickle cell anemia involve a single amino acid substitution where glutamic acid is replaced by valine?

True

Which sugar is present in RNA but NOT in DNA?

Ribose

Which of the following amino acids is NOT aromatic?

Alanine

Is a phosphodiester bond a strong covalent bond that connects nucleotides in DNA and RNA strands?

True

Is amylose an unbranched polysaccharide while amylopectin is branched?

True

Is the methyl group (-CH3) a polar functional group?

False

Are β 1-4 glycosidic linkages present in the polysaccharide cellulose?

True

Which of the following is NOT a major element for the human body?

Vanadium

What is true about phospholipids?

They are amphipathic molecules.

When specific results are predicted from a general premise, what is this called?

Deductive reasoning.

In ionic bonds, is a cation always both negatively charged and a metal?

False

Is a theory a hypothesis that has been repeatedly tested but only falsified a few times?

False

Which disaccharide is made up of one molecule of glucose and one molecule of fructose?

Sucrose

How are electrons shared between the atoms in a polar covalent bond?

Unequally

Which of the following did not contribute to the understanding of the theory of natural selection?

Rosalind Franklin

When following the scientific method, must the scientist analyze and report results only if they support the hypothesis?

False

Which of the following is NOT something ALL lives share?

All organisms have a well-defined nucleus and organelles.

Do all isotopes of an element have the same number of protons and neutrons?

False

Is adhesion the attraction of water molecules with a different molecule while cohesion is the attraction between water molecules?

True

According to the Theory of Heredity, can a person pass a trait that they do not express to their offspring?

True

Which condition is caused by a deficiency of iodine in the body?

Goiter

What is the atomic number of an element equal to?

The number of protons in the nucleus of the atom.

Is Natural Selection only one of the ways by which evolution of life occurs?

True

What is the correct order in terms of hierarchy of organization from largest to smallest?

Biosphere -> Ecosystem -> Community -> Population -> Organism

Does adding an acid like HCl lower the pH of a solution?

True

Are the two strands held together in a DNA double helix by phosphodiester bonds?

False

Do triglycerides and phospholipids both have one glycerol backbone and at least two fatty acid chains?

True

Are β - pleated sheet and α - helix types of secondary protein structure?

True

According to the tenets of the Cell Theory, are chemical reactions necessary for life to take place within cells?

True

Do peptide bonds connect amino acids together in a polypeptide and are they a type of dehydration reaction?

True

Are chitin and glycogen both polysaccharides, with the former containing nitrogen and the latter not?

True

Can hydrocarbons have aliphatic and aromatic portions in the same molecule?

True

What is the pH of the solution if [H+] = 10^-4?

4

How much NaCl is needed to make 500ml of a 0.5M NaCl solution?

14.5 gm

What is the movement of a plant towards the source of light an example of?

Phototaxis