Biology Quiz

Which statement is incorrect about the cytoskeleton?

• Microtubules are the thickest cytoskeletal fiber

• Microfilaments are made of actin

• Intermediate filaments are responsible for holding organelles in place

• Pseudopodia are made of microtubules

Name all of the following 4 techniques that can be used to observe living cells.

• FRAP

• SEM

• Phase-contrast microscopy

• Optical microscopy

A hypothetical cell is found to secrete large amounts of a lipid hormone. Which of the following organelles is most likely to be found in larger quantities in this cell relative to other cells?

• Rough ER

• Smooth ER

• Ribosomes

• Lysosomes

What molecule is produced by catalase?

• H2O2

• H2O

• O3

• H2

Which of the following is not evidence to support the endosymbiosis theory?

• Mitochondria have their own ribosomes that are similar to prokaryotic ribosomes

• Mitochondria are surrounded by a single plasma membrane like all prokaryotes

• Chloroplasts have their own DNA

• Chloroplasts replicate independent of the cel

Which of the following is produced by the nucleolus?

• mRNA

• tRNA

• rRNA

• DNA

A scientist is testing the function of cathepsin 3, a lysosomal protease, in different conditions. Which of the following would likely cause the ability of cathepsin 3 to increase the most?

• Lowering pH from 7 to 2

• Raising pH from 7 to 12

• Increasing the temperature from 37 degrees Celsius to 50 degrees Celsius

• Decreasing the temperature from 37 degrees Celsius to 24 degrees Celsius

Tags

NGSS.HS-PS1-5

Which of the following cell types would have the highest proportion of bound ribosomes to free ribosomes?

• A cell that produces a large amount of a protein hormone

• A cell that performs a lot of phagocytosis

• A cell that does a lot of gluconeogenesis

• A cell that transports a lot of material inside the cell

Which of the following techniques is used to observe movement of a specific molecule in a cell?

• Confocal microscopy

• FRET

• FRAP

• Optical microscopy

Contractile vacuoles are likely to be found in unicellular organisms in which of the following environments?

• Rainforest

• Freshwater

• Marine

• Hot spring

Tags

NGSS.MS-LS2-1