Biology Semester 2 Midterm (2021)

Building blocks of proteins are

• Simple sugars
• Amino acids
• Monosaccharides
• Polysaccharides

A scientist was studying the effect of temperature on bacterial growth.  What is the independent variable?

• Length of the experiment
• Number of bacteria
• Reproduction rate
• Temperature

Two structures present in plant cells but NOT animal cells are:

• Chloroplasts and centrioles
• Chloroplasts and cell wall
• Chloroplasts and cell membrane
• Chloroplasts and ribosomes

What are the nucleotides made of?

• Sugar, Phosphate, nitrogen base
• Phosphate, Adenine, nitrogen base
• Thymine, Adenine, Cytomine
• Phosphate, Nitrogen, Adenine

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

In eukaryotes, which organelle is DNA usually found in?

• cell membrane

• vacuole

• chloroplast

• nucleus