Tenney Bio - Chapter 1

How have computer models expanded biological research?

• They help scientists design better experiments

• They simulate complex biological systems that cannot be studied directly

• They give scientists the ability to observe molecules directly

• They allow the use of human experimental subjects.

All the chemical processes used to build up or break down materials are called an organism's

• metabolism

• homeostasis

• adaptations

• stimuli

Scientists use observations and data to form and test

• constants

• hypotheses

• theories

• conclusions

Both of the processes shown use and apply biological processes. Both processes are examples of

• biotechnology

• genomics

• imaging technology

• transgenic organisms

At which stage of scientific thinking are scientists most likely to consider the data and conclusions of other scientists to propose new experiments?

• observing

• testing hypotheses

• analyzing data

• forming hypotheses

What is the name given for genetic changes in living things over time?

• adaptation

• homeostasis

• evolution

• negative feedback

The various parts of Earth's biosphere are connected and

• similar

• nonliving

• diverse

• aquatic

During an experiment, which factors are observed and measured?

• dependent variables

• independent variables

• constants

• hypotheses

Similar organisms that can reproduce by interbreeding belong to the same

• ecosystem

• environment

• habitat

• species

Which phrase best describes scientific theories?

• explain a few observations

• serve as speculations

• are never proven

• cannot be replaced