3 Biochem & Cell Bio Practice Test S25

How does DNA differ from one species to another?

• The number of genes and non-coding regions

• The directionality of the DNA strands

• The type of nitrogenous bases the DNA contains

• The way the nitrogenous bases pair together

Tags

NGSS.HS-LS3-1

Below is a list of the four groups of macromolecules found in living things. Match each with its example and associated functions. 

• Lipids

• Example: enzymes. Functions: structure, receptors, transport.

• Nucleic Acids

• Example: cellulose. Functions: energy storage, receptors, structure of plant cell wall.

• Carbohydrates

• Example: cholesterol. Functions: membrane structure, energy storage, insulation.

• Proteins

• Example: DNA. Functions: genetic information storage, transmission, and expression.

Tags

NGSS.HS-LS1-6

Which of the following is the study of the full complement of DNA in a cell?

• Metabolomics

• Transcriptomics

• Proteomics

• Genomics

Match the type of DNA to its correct description.

• Eukaryotic DNA

• Cytoplasmic, circular DNA containing only a few genes

• Plasmid DNA

• Linear, long pieces of DNA with many thousands of genes, contained within a nucleus

• Prokaryotic DNA

• Circular, long DNA containing several thousand genes

A structural gene’s antisense code is 5' TAC ATG CCC TTA ATC 3', what will the mRNA transcript be?

• 3' AUG UAC CCC AAU UAG 5'

• 3' AUG ATC GGG AAT UAG 5'

• 3' AUG UAC GGG AAU UAG 5'

• 3' ATG TAC GGG AAT TAG 5'

Select the option that represents the correct order of assembly in the cell:

• Amino acid, polypeptide, protein

• Protein, amino acid, polypeptide

• Amino acid, protein, polypeptide

• Polypeptide, amino acid, protein

A single base pair change in a gene’s DNA sequence can affect the shape and function of the protein it encodes.

• true

• false

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Match the image to the corresponding level of protein structure.

• Hydrogen bonding

• 
• Side chain interactions

• 
• AAs linked together by peptide bonds

• 
• Multiple polypeptides associating

• 

The three-dimensional structure of a protein is largely determined by the amino acid sequence.

• true

• false

Tags

NGSS.HS-LS1-1

The enzyme maltase catalyzes the break down of maltose into glucose. A technician added maltase to a solution of maltose to be incubated at 37°C for 20 minutes. Samples were taken from the reaction tube every five minutes, and the glucose and maltose concentrations were measured. No maltose was left in the reaction after 15 minutes.

Which of the following graphs represents the change in glucose and maltose concentrations over time?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-5