Throughout the 1800s, scientists viewing organisms under microscopes made a series of observations.
A scientist viewing plant structures observed that plants are made up of very small repeating units. Each of these was surrounded by a wall and contained a nucleus.
A scientist examining tissue from tadpoles observed that animal structures are made up of repeating units. Each of these contained a nucleus.
A scientist viewing samples of pond water observed small, freely moving organisms. Each of these contained a single nucleus.
These observations led the scientists to develop a theory about living organisms. Which of the following conclusions about living things is best supported by these observations?
A.
All living things are made up of cells.
B.
Living things are made up of several different types of cells.
C.
Cells can only come from pre-existing cells.
D.
Cells from different living organisms look identical to one another.
Answers: 3
Biology, 22.06.2019 06:20
Cells are adapted to preform specific functions. which of the following terms refers to this capability?
Answers: 2
Biology, 22.06.2019 06:30
Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?
Answers: 3
Biology, 22.06.2019 11:00
Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse
Answers: 1
Throughout the 1800s, scientists viewing organisms under microscopes made a series of observations.<...
Mathematics, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Arts, 20.11.2020 01:00
History, 20.11.2020 01:00
Physics, 20.11.2020 01:00
Biology, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
English, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00