Similarities of Parents and Offspring
Two boys are twins, one has green eyes and the other one has dark brown eyes. Both parents have dark brown eyes. What caused the difference in eye color?
In a unicellular organism __________ performs all life functions.
Specialized cells form a ______________; these in turn group together to form _____________.
Why are systems important to complex plants and animals?
Each system in an organism has a specific job that helps the organism stay alive.
What are single-celled organisms?
Single-celled organisms are living things that are made of just one cell. There are many different kinds of single-celled organisms. Some are called protists. Others are called bacteria.
Which of the following baby animals most closely resembles their parents at birth?
koala
Which choice contains only single-celled organisms?
Which of the following is made of different types of cells working together to perform one function?
How are the tissues in complex plants and animals organized?
In complex plants and animals, tissues work together to form organs. Different organs work together to form organ systems. The special types of cells in each organ system let the system do its job.
What kinds of needs do single-celled organisms have?
Single-celled organisms have the same basic needs as living things made of many cells. These basic needs include the need to get energy and the need to get rid of waste.
The genetic traits that a parent passes to its offspring are called ____________ traits.
Which of the following is a single-celled organism?
ada read about systems in organisms. She was particularly interested in the different types of systems, such as the digestive system and the nervous system. Jada realized that each system in an organism ______.
How are the cells in multicellular organisms organized?
Simple multicellular organisms, like sponges, have only a few different types of cells. These cells work together to do everything the organism needs to stay alive. In complex multicellular organisms, cells work together to form tissues. Each tissue is made of only one type of cell.
How do single-celled organisms help other organisms?
Many single-celled organisms help other living things survive. Certain protists make most of the Earth’s oxygen. Some bacteria help the human body digest food.
If two lions have a baby lion, their normal offspring would have _________________________________.
A friend says that bacteria are harmful. Which of the following is evidence that bacteria can be helpful?
Specialized cells work together in _____ to perform a specific task in an organism.
What are traits?
Traits are characteristics of organisms, including how they look and how they act. Organisms have many of the same traits as their parents.
How do some single-celled organisms move by themselves?
Some single-celled organisms have special features such as tiny hairs. These special features allow the organisms to move by themselves.
For years everyone has told you that you look and act just like your dad. Which of the following characteristics is probably a result of interaction with your environment rather than heredity?
A cell that functions without the aid of other cells is regarded as ______________.
Simple multicellular organisms are made of a collection of similar cells. The similar cells are not highly specialized, but they ______.
How do organisms get their traits?
Organisms pass many traits to their offspring through genes. Traits passed from parents to offspring are called inherited traits. Eye color and hair color are inherited traits. Not all traits are inherited. For example, an organism’s weight may change based on how much it eats.
Why are muscles important to the body?
Muscles are important because the provide movement for the body.