WorksheetsLife Science Review Repost (from 1/31)
Total questions: 15
Worksheet time: 13mins
If a substance is composed of one type of atom that is arranged in one particular way, how is this substance best classified
element
compound
mixture
gas
In the current model of the Periodic Table of Elements, the elements have been placed in groups or families. Why have the elements been organized in such a way?
Elements in each group have similar densities.
Elements in each group all have similar boiling points.
Elements in each group have similar physical and chemical properties.
Elements in each group have the ability to chemically react with the other elements within that group.
How are viruses, bacteria and parasites alike?
They are unicellular and can cause disease.
They are multi-cellular and can cause disease.
They are non-living and can cause disease.
They can infect a host and cause disease.
Which is a major difference between an epidemic and a pandemic?
An epidemic is caused by toxins but a pandemic is caused by viruses.
An epidemic results in more deaths than a pandemic.
A pandemic affects more people than an epidemic and spreads farther.
An epidemic spreads farther around the world than a pandemic.
Which of the following limiting factors will most likely prevent further population growth within an ecosystem?
excess water supply
food supply to the area
transportation availability
recycling of human goods
Differences in the homologous structures shown below, supports the hypothesis that these organisms:
are member of the same species
live in the same environment
have similar ancestors but adapted to live in different environments
all contain the same genetic information.
Which statement best describe the periodic table?
Each column forms a period
The number of electrons decreases from the left to right
The atomic mass dereases from the left to right
Elements in the same group have similar chemical properties
Measles is a disease caused by a virus. Which is the most effective way to keep measles from spreading?
giving antiviral medicine to people who have measles
having healthy people wash hands often
giving antibiotics to people with measles
vaccinating healthy people against measles
________ factors are non-living parts of an ecosystem.
Abiotic
Community
Biotic
Organism
