BIOL 3301 UTA DR.CHARLESS EXAM 1

Which molecules were likely present in the first cells?

• RNA

• DNA

• Proteins

• Lipids

Which of the following are considered prokaryotic organisms?

• Bacteria

• Archaea

• Fungi

• Protists

Which structures are found in eukaryotic cells but NOT prokaryotic cells?

• Mitochondria

• Nucleus

• Endoplasmic Reticulum

• Ribosomes

Which of the following are advantages of model organisms?

• Short generation time

• Easy genetic manipulation

• Expensive to maintain

• Well-characterized genomes

Which types of microscopy are used to study live, unstained cells?

• Brightfield

• Phase-contrast

• Differential Interference Contrast

• Transmission Electron

Which are advantages of fluorescence microscopy?

• Can visualize specific proteins

• Uses fluorescent dyes or tags

•  Produces 3D surface images

• Allows study of dynamic processes in cells

Which are types of chemical bonds?

• Ionic

• Hydrogen

• Covalent

• Noncovalent interactions

Which of the following are carbohydrates?

• Glucose

• Glycogen

• Starch

• Cholesterol

Which lipids are important components of membranes?

• Phospholipids

• Cholesterol

• Sterioid Hormones

• Triglycerides

Which statements about DNA and RNA are correct?
a)
b) DNA is double-stranded, RNA is often single-stranded
c) Both are made of nucleotides
d) Both have deoxyribose sugar

• DNA uses thymine, RNA uses uracil

• DNA is double-stranded, RNA is often single-stranded

• Both are made of nucleotides

• Both have deoxyribose sugar