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HB Qtr1 Review
Members of the kingdom Animalia
Which statement about genetics is true?
HB Qtr1 Review
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quarter 1 review
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Questions
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Answers
1
Which statement about genetics is true?
DNA is made up of 6 different nucleotides
genes are proteins that produce DNA
DNA contains a single strand of nucleotides
diversity reflects different nucleotide sequences in DNA
2
Members of the kingdom Animalia
obtain energy by absorption or photosynthesis
eat other organisms
have cells that lack a cell membrane
use photosynthesis
3
Which particles are found in the nucleus of an atom
protons
protons and neutrons
electrons
protons and electrons
4
What is a compound?
2 or more different elements in a fixed ratio
contains sodium
a solution
a pure element
5
Which of the following is a trace element commonly added to table salt?
fluoride
iron
iodine
magnesium
6
what is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons
6
8
12
18
7
If boron has an atomic number of 5 and an atomic mass of 11, how many electrons does it have?
11
15
5
2
8
In an ecosystem, energy
comes ultimately from bacteria
cycles along with chemical nutrients
from producers through a series of consumers
flows from consumers to producers to decomposers
9
A theory is
an idea that has been proven
description of a belief that invokes the supernatural
broad in scope and supported by evidence
concept that needs to be tested
10
A solution with a pH of 7 is
weakly acidic
neutral
weakly basic
strongly acidic
11
Organic compounds
always contain oxygen
always contain nitrogen
always contain carbon
are synthesized only by animal cells
12
In ocean acidification, dissolving CO
2
changes the pH of the ocean how?
raises it
lowers it
does not affect it
triples it
13
Which of the following is a carboxyl group?
-OH
-COOH
-NH2
-CO
14
Prokaryotic organisms are in the domains
Fungi and Bacteria
Eukarya and Archaea
Plantae and Animalia
Bacteria and Archaea
15
Many names for sugars end in the suffix
-acid
-hyde
-ose
-ase
16
A hydrogen atom has one electron, how many covalent bonds can it form?
4
none
1
2
17
Which of these is
not
a correct pathway of energy through an ecosystem
plants-birds-bacteria
insects-birds-bacteria
bacteria-plants-birds
plants-insects-birds
18
When looking for a prokaryotic cell, you are looking for a cell that is
has a nucleus
has a membrane
makes up most tissues in your body
much larger than most cells
19
What are the 4 most common elements in living organisms?
C, H, O, Na
C, H, O, Fe
C, O, N, Na
C, O, N, H
20
what kind of bond forms when 2 atoms share electrons?
hydrogen
ion
ionic
covalent
21
Which of the following is an amino group?
-COOH
-CO
-OH
-NH2
22
Lactose intolerance is the inability to
digest lactose
produce milk protein
digest cellulose
produce lactose
23
Foods that are high in fiber are most likely derived from
plants
dairy products
red meats
fish
24
The storage form of carbohydrates is ________ in animals and __________ in plants
starch, glycogen
glycogen, cellulose
cellulose, glycogen
glycogen, starch
25
Fatty acids with double bonds between some of their carbons are said to be
saturated
unsaturated
monoglycerides
completely hydrogenated
26
A hypothesis is
a proposed explanation for a set of observations
a widely accepted idea about a phenomenon
broad in scope and supported by evidence
the same as a theory
27
The role of a control in an experiment is to
ensure repeatability
prove that a hypothesis is correct
counteract the negative effect of the experiment
provide a basis of comparison
28
A single water molecule (H
2
O) is held together by
2 polar covalent bonds
a single covalent bond
hydrogen bonds
a double covalent bond
29
Organisms that belong to the kingdom Plantae
decompose dead organisms for nutrients
are unicellular and lack a nucleus
are multicellular and lack a nucleus
are photosynthetic
30
The results of a dehydrationn reaction can be reversed by
the addition of an amino group
polymerization
hydrolysis
condensation
