All organisms possess DNA, DNA

contains information for growth and development

a testable possible explanation of an observation

The concentration of a solution is

the amount of solute in a solution, the ratio of solute in a solution

is the study of communities or organisms in relation to their environment

may be revised as new evidence is presented

Because carbon has four electrons in its outer energy level

it can react with up to 4 other atoms

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Biology Final Review 1

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Biology basics, science, microscopes, and chemistry.

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Questions 19

Answers

1
Biology is the study of
minerals
the weather
energy
life
2
Nucleic acids include
chlorophyll and retinal
glucose and glycogen
Lipids and sugars
DNA and RNA
3
The matter in the universe is composed of
atoms
molecules
carbon
cells
4
Long chains of amino acids are found in
sugars
lipids
proteins
carbohydrates
5
Homeostasis means
the same thing as evolution
rapid change
a change over long periods of time
keeping things the same
6
All organisms possess DNA, DNA
captures energy from the sun
allows sensitivity to environmental stimuli
contains information for growth and development
creates energy for cells
7
Which of the following characteristics of water is NOT a result of hydrogen bonding?
all of the above
capillarity
cohesive strength
adhesive strength
8
Lipids are
polar molecules
nonpolar molecules
similar to water molecules
protein molecules
9
A hypothesis is
a testable possible explanation of an observation
a definite answer to a given problem
a proven statement
a concluding statement
10
The concentration of a solution is
the number of particles of a substance in a solution
the amount of solute in a solution
the ratio of solute in a solution
the amount of solvent in a solution
11
Ecology
is the study of communities or organisms in relation to their environment
refers to a change in species over time
refers to a delicate balance within organisms
is inconsistent with evolution
12
A light microscope that has an objective lens of 10x & an ocular lens of 20x has a total magnification of
200x
2000x
300x
30x
13
A scientific theory
is absolutely certain
may be revised as new evidence is presented
is a controlled experiment
is unchangeable
14
All organic compounds contain the element
C
Ca
N
Na
15
The smallest units that can carry on all the functions of life are called
molecules
species
cells
organelles
16
A water molecule is polar because its hydrogen and oxygen atoms
both lose electrons
both gain electrons
do not share electrons equally
become ions
17
Carbon is different from many other elements in that
it can form single, double, or triple bonds
it has 4 electrons in its outmost energy level
all of the above
it readily bonds with other carbon atoms
18
Because carbon has four electrons in its outer energy level
it can form bonds with carbon atoms only
these atoms are naturally chemically stable
it can react with up to 4 other atoms
it can't react with anything other than organic molecules
19
Which organic molecule below is classified as a carbohydrate
amino acid
CH2 chain
sugar
nucleotide

Biology Final Review 1 Flashcards | StudBud