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WorksheetsCell test part 2
Total questions: 15
Worksheet time: 10mins
In 1907, Nobel Prize winning scientist Élie Metchnikoff, suggested that Bulgarian peasants lived longer lives because they eat large amounts of yogurt. Yogurt is a food that contains large amounts of bacteria.
Which of the following evidence would best support his claim?
Bacteria is needed by our digestive system to help digest food.
Bacteria causes many diseases and can be limited by antibiotics.
Bacteria is used to make a variety of foods such as yogurt.
Bacteria can decompose dead organisms.
How do diffusion and osmosis differ?
Diffusion takes place in eukaryotes; osmosis takes place in prokaryotes.
Only water molecules move during diffusion; oxygen and waste move during osmosis.
Only water molecules move during osmosis; oxygen and waste move during diffusion.
Substances move into cells during diffusion; substances move out of cells during osmosis
Which of the following cell structures do eukaryotes and prokaryotes have in common?
cell membrane
flagellum
nucleus
nucleoid
What evidence supports a conservation law
Energy from sunlight becomes glucose during photosynthesis.
Carbon dioxide becomes glucose and oxygen during photosynthesis.
Which of the following is a true statement about cellular respiration?
Cellular respiration occurs only in plant cells.
Cellular respiration occurs only in animal cells.
Cellular respiration occurs in both plant and animal cells.
Cellular respiration occurs in some plant cells and some animal cells.
Before the mid-1800s, most people, scientists included, believed that nonliving matter could spontaneously generate living tissue. The unexplainable appearance of maggots on a piece of meat was often given as evidence to support the concept of spontaneous generation. In 1864, Louis Pasteur did an experiment in which he boiled meat broth, killing all the microbes. The broth did not regrow microbes unless contaminated dust from the air.
Which conclusion is best supported by the results?
Cells come from preexisting cells.
Life could spontaneously generate from nonliving things.
In 1839, Theodor Schwann, a German biologist, observed that animal tissue was composed of cells. Others had observed earlier, that plant tissue was also composed of cells.
Which of the following is the best claim he could make given the evidence he observed?
The cell is the basic unit of life.
Animal tissue separates into cells as it ages.
The invention of the microscope allowed scientists to see things that they had not been able to see before. In 1665, Robert Hooke looked at a piece of cork, a type of plant, under a microscope and saw something similar to the picture.
What are the little boxes he saw in the cork called?
cells
genes
nuclei
chromosomes
Jerry observes a type of cell that has a nucleus, small vacuoles, mitochondria, and no chloroplast. What type of cell is he most likely observing?
animal
plant
bacterium
virus
A scientist observed an organism under the microscope. She observed the following characteristics:
The organism was multicellular. There was a nucleus present. There were small green organelles.
Based on her observations, what was the organism she observed and what evidence supports her claim?
It is a bacterium because it has a nucleus and it is unicellular.
It is a protist because it has chloroplasts and it is unicellular.
It is a plant because it's cells have chloroplast and it is multicellular.
The diagram below is a model of the cell.
Organelles A and B have separate functions in the cell. Which of the statements below best explains how these two organelles work together?
B directs A to produce sugar.
A creates sugar which B uses to produce energy.
B creates sugar which A uses to produce energy.
The diagram below is a student drawing of a plant cell.
How could she best describe the function of the structure labeled A?
It is a vacuole that stores water and helps provide shape.
It is a chloroplast that makes glucose and oxygen.
It is a vacuole that makes glucose and oxygen.
It is a chloroplast that stores water and helps provide shape.
The picture below shows water molecules separated by a cell membrane.
What will most likely happen to the water molecules over time?
The number of water molecules on the right will increase.
The number of water molecules on the left will increase.
The water molecules will stay in the same area.
The water molecules will settle to the bottom.
The discovery of the antibiotic penicillin in the 1920s made a big impact on human history. It led to a cure for many bacterial infections that were once deadly.
Tuberculosis was once considered a death sentence but can now be cured by taking several antibiotic drugs over a period of several months.
What is the most likely cause of tuberculosis?
It is caused by a type of bacteria.
It is caused by a type of virus.
It is caused by poor nutrition.
Which argument best supports the claim that bacteria are not helpful to organisms and the environment?
Bacteria aid in breaking down and absorbing food in the digestive system.
Bacteria help make food such as cheese and yogurt.
Bacteria can be pathogens and cause diseases such as strep throat.
Bacteria release nutrients into the environment after decomposing dead organisms.
