Part 02: STAAR Bio RC 01 Cytology Review Questions

Front

Which describes the nature of an enzyme?
I made of protein II a.k.a. catalyst III has specific substrate IV does not change during chemical reaction V speeds up chemical reaction

Back

I, II, III, IV and V

Front

Based on the enzyme picture, which pair is INCORRECT? A: Substrate, also known as chemical reactant B: Enzyme A and C together: Enzyme Substrate Complex E and D together: Enzyme

Back

E and D together: Enzyme

Front

Which drawing represents the Enzyme-Substrate Complex?

Back

C when substrate attaches to the active site of enzyme

Front

Optimum temperature in Celsius for enzyme activity based on the picture?

Back

40

Front

Based on the graph, at which pH will the enzyme work at its optimum?

Back

8

Front

Which of the following will NOT occur to the enzyme if the temperature and pH changes?

• it will denature
• it will slow down the chemical reaction
• it will no longer work at its best
• it will speed up the chemical reaction

Back

it will speed up the chemical reaction

Front

Which of the following is NOT a common organelle found between the prokaryotic and eukaryotic cell? I cell membrane, II cytoplasm, III mitochondria, IV nucleus, V ribosome

Back

nucleus, ribosome

Front

The pictures shows the endoplasmic reticulum which of the following is NOT a correct information? Rough ER: involved in protein production, Smooth ER: synthesis of  lipid or fats, steroids and hormones , ER: transport molecules inside of the cell, ER: site for cellular process known as photosynthesis

Back

ER: site for cellular process known as photosynthesis

Front

Main component of the cell membrane (aka plasma membrane or semipermeable membrane)?

Back

phosphorus and lipids

Front

Which of the following provides a CORRECT description of a fluid mosaic model?
I depicts structures of the cell membrane II depicts the function/s of the structures of the cell membrane III depicts the composition of the cell membrane IV depicts the concentration of the gradients passing the cell membrane

Back

I, II and III