What is a hypothesis?

tentative explanation that can be tested

Why is it important to have a control group?

without one there is no basis for comparison

The amount of light and temperature are examples of

factors to which living things respond

Which characteristic of life explains why birds fly south for the winter?

they respond to their environment

Which example is an activity that fish most likely uses to maintain homeostasis?

exchanging gases through its gills to regulate oxygen levels

A controlled experiment....

there are at least 2 groups 1 of which is not tested

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Unit 1: Basics of Biology

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Over view of nature of biology, scientific method, variables, and the characteristics of living things. #biology #scientificmethod #variables #livingthings #organisms #microscopes

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Questions 35

Answers

1
The ability to reproduce results is an important part of any
theory
hypothesis
law
experiment
2
The work of scientists usually begins with
creating experiments
testing a hypothesis
drawing conclusions
careful observations
3
Biology is the study of
the ocean
insects
life
plants
4
A theory
is a problem to be solved
may be revised or replaced
is always true
is the opening statement of an experiment
5
A control group and an experimental group are identical EXCEPT for one factor -
control variable
dependent variable
vector variable
independent variable
6
When applying the process of science, which is tested?
observation
hypothesis
question
result
7
A controlled experiment allows the scientist to isolate and test
a conclusion
a single variable
several variables
a mass of information
8
Growth is
a new part
a change in shape
a change in size
a change in function
9
Which characteristic of life is more important to the GROUP than to an INDIVIDUAL?
reproduction
respond to environment
growth and development
evolution
10
The process by which an organism maintains internal balance is
equilibrium
homeostasis
homeopathic
fasting
11
Cell specialization allows cells to
reproduce
be less complex
respond to their environment
perform different functions
12
The building up or breaking down of materials through chemical reactions is called
metabolism
homeostasis
cell fractionation
messenger pathways
13
A hypothesis must be
proven beyond doubt
unable to be repeated
stated after the experiment
testable
14
Which of these in an inference?
I lost me car key.
My car won't start.
My car's battery is dead
If I turn the key and step on the gas then my car will start
15
Which of the following is NOT a characteristic of living things?
genetic code
reproduction
movement
uses materials & energy
16
The process by which organisms keep their internal conditions fairly constant is called
metabolism
evolution
photosynthesis
homeostasis
17
What is a hypothesis?
fact that is falsifiable
tentative explanation that can be tested
an unproven theory
fact based on data that is testable
18
Why is it important to have a control group?
without one there is no basis for comparison
it provides extra experimental subjects
it is the one the scientist is in control of
required for development of an "if/then" statement
19
Which characterisitc is shared by all prokayotes and eukaryotes?
contains DNA
ability to move
contains nucleus and organelles
use of photosynthesis to produce energy
20
The metric system is based on a system of
5s
100s
10s
1s
21
Inofrmation gathered from observing a plant grow 3 cm over a 2 week period results in
hypotheses
data
inferences
variables
22
The amount of light and temperature are examples of
factors that affect reproduction
factors necessary for life
methods of energy production
factors to which living things respond
23
Which characteristic of life explains why birds fly south for the winter?
they are made up of cells
they are based on a universal genetic code
they respond to their environment
they maintain internal balance
24
A signal from the outside that produces a response is a
dependent variable
stimulus
equity factor
control variable
25
Which of the following is NOT a characteristic of living things?
ability to reproduce
ability to move
response to the environment
growth and development
26
Which example is an activity that fish most likely uses to maintain homeostasis?
feeding at night to regulate body temperature
exchanging gases through its gills to regulate oxygen levels
moving to deeper water to regulate metabolic wastes
using camouflage to avoid predators
27
The farther a ball drops, the higher it will bounce. What is the DEPENDENT variable?
the ball
the height from which the ball is dropped
how high the ball bounces
there is none
28
Two cells unite to form a new cell
respond to environment
homeostasis
sexual reproduction
asexual reproduction
29
You suggest that the presence of water could accelerate the growth of bread mold. This is a(n)
experiment
analysis
hypothesis
conclusion
30
A controlled experiment....
is repeated many times to be sure the results are accurate
proceeds at a slow pace to observe reactions
there are at least 2 groups 1 of which is not tested
1 group for which the scientist controls all variables
31
A hypothesis is only useful if
it can be tested
it can be proven incorrect
it can be proven correct
the explanation is already known
32
When enough experimental data supports a hypothesis, the hypothesis becomes a(n)
fact
theory
inference
conclusion
33
Type of reproduction in which a cell simply splits into 2
asexual
antisexual
sexual
cell division
34
Information that is NOT numbers is called
description
development
quantitative data
qualitative data
35
Biology is the study of
the land, water, and air on Earth
the living world
the environment
animals and plants only

Unit 1: Basics of Biology Flashcards | StudBud