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WorksheetsQuizizz #15 (2021)
Total questions: 15
Worksheet time: 30mins
Protein synthesis is accomplished primarily by the interaction of which two cell structures?
vacuoles and mitochondria
ribosomes and vacuoles
nuclei and ribosomes
nuclei and mitochondria
Students did an experiment comparing the activity of four different enzymes, A, B, C, and D. The results are represented in the graph below. A valid conclusion based on the information in the graph is that
the pH of some enzymes changes as the temperature changes
enzymes change color in proportion to the rate of activity
a difference in the pH of an environment changes enzyme activity
enzyme activity causes acids to change into bases over time
The diagram below illustrates the movement of glucose across a cell membrane. Which two processes are most directly represented in this diagram?
ATP synthesis and the diffusion of water
molecule transport and energy use
homeostasis and ATP synthesis
homeostasis and the diffusion of water
The diagram represents changes that take place within the human body. The diagram represents
cellular differentiation
dynamic equilibrium
gene interaction
biological evolution
An experiment is carried out to determine how different pH values of soil will affect the growth of tomato plants. In this experiment, the dependent variable could be the
height of the tomato plants
pH of the soil
specific variety of tomato plants used
pH of enzymes in tomato leaf cells
Using microscopes he constructed in the 1600s, Antonie van Leeuwenhoek discovered a new microscopic world. His discoveries paved the way for the development of the microscopes used today and for many important biological breakthroughs. Which statement best describes van Leeuwenhoek’s work?
His observations alone provided enough information to form modern biological theories.
The microscopes he made were used by all scientists and have remained unchanged over the years.
Knowledge gained by his work has led to the improvement and development of modern scientific concepts.
Explanations of the microscopic world today are solely based on his observations and conclusions.
The diagram below represents a lab setup. The artificial cell (dialysis tube) contains a starch solution and the beaker contains a solution of starch indicator and water. The setup is left undisturbed for twenty minutes. What change, if any, will be visible
The liquid outside the cell will turn blue black
Starch will diffuse out the the cell
Starch indicator will diffuse into the cell, turning the cell blue black
The setup will remain unchanged
A student added equal volumes of water to two different beakers. He then added blue food dye to one and yellow to the other. Next, he placed a white paper towel across the two beakers so that it went down into the liquid and connected the two beakers. After 20 minutes, the section of paper towel connecting the two beakers had turned color. The towel most likely turned green as a result of the
separation of the dye molecules through the process of chromatography
dyes moving across the towel due to the process of electrophoresis
diffusion of the blue- and yellow-dyed water across the towel
active transport of the blue and yellow food dyes
In single-celled organisms, materials are stored primarily in
ribosomes
mitochondria
nuclei
vacuoles
An ameba is a single-celled, heterotrophic organism. In order to meet its energy needs, it relies directly on the interaction of which cell structures?
chloroplasts and the cell membrane
the cell membrane and mitochondria
nucleus and ribosomes
vacuoles and the nucleus
The diagram illustrates the release of chemical A from a human cell in response to a specific stimulus. Which cell structure plays a direct role in the release of this chemical from the cell?
nucleus
ribosome
chloroplast
cell membrane
Which sequence best represents the levels of organization in a paramecium, a single-celled organism?
cells —› tissues —› organs —› organ systems —› organism
organelles —› organ systems —› organism
cells —› organs —› organ systems —› organism
organelles —› organism
Which technique could be used to make the structures in the cells more visible when using a compound light microscope?
paper chromatography
staining
electrophoresis
gene manipulation
The diagram represents red blood cells placed in three test tubes, each containing a different salt solution. Which statement best describes solution C?
The concentration of dissolved salt in the solution is greater than the concentration in the cells.
The concentration of dissolved salt in the solution is less than the concentration in the cells
The concentration of water in the solution is greater than the concentration in the cells
The concentration of water in the solution is equal to the concentration in the cells.
Which solution would be most similar in concentration to the normal internal environment of the human circulatory system?
solution A, only
solution B, only
solutions A and B
solutions A and C
