Worksheetsi. ch1-15 review before final
Total questions: 28
Worksheet time: 29mins
The term fitness is defined as an organism’s ability to outrun its hunters.
True
False
Why is crossing-over important?
It creates genetic variability and adds to diversity
It ends mitosis 1
It causes cancer
All of the above
If a cell has 12 chromosomes at the beginning of meiosis, how many will it have at the end of meiosis?
12
24
3
6
The sequence of growth and division of a cell is called
mitosis
cell cycle
cancer
meiosis
What is the name of the structure labeled X?
Kinetochore
Centromere
Centriole
Homologous chromosomes
Cystic fibrosis is the most common lethal genetic disease in America. It is caused by a recessive allele. If an unaffected man whose mother had cystic fibrosis marries an unaffected woman whose father had cystic fibrosis, what is the probability that their children will have cystic fibrosis?
100%
25%
50%
75%
DNA Polymerase
adds DNA nucleotides to a growing daughter strand
plays a role in translation
plays a role in transcription
is a nucleic acid
RNA polymerase
adds DNA nucleotides in DNA replication
adds RNA nucleotides in transcription
adds RNA nucleotides in translation
is part of the ribosome
The lac operon is made up of
genes that encode enzymes that breakdown lactose
a promoter sequence
an operator sequence
all of the above
miRNA are one way to regulate gene expression. They function by
complementary base pairing to an mRNA and blocking translation
inserting themselves into mRNA
binding to DNA and blocking transcription
none of the above
How does Ras (a proto-oncogene) regulate the cell cycle?
Ras proteins put a brake on cell division
Ras proteins cause apoptosis
Ras proteins tells the cell to divide.
______ is the manipulation/exploitation of organisms or their parts to produce useful products.
genetics
biotechnology
heredity
A new variety of rice called golden rice has been genetically modified to have vitamin A. People in starving countries can eat this rice and receive the vitamin A. Without this rice people go blind from vitamin A deficiency. What word(s) below best describes this rice?
clone
GMO
fake news
recombinant DNA plasmid
______ are the monomers for a ______ polymer.
glucose, starch
fatty acids, glycerol
lactose, glucose
amino acids, polysaccharide
This picture represents interactions between amino acid side chains. This represents a protein's ____
quaternary structure
secondary structure
tertiary structure
primary structure
What type of molecule is this?
protein
nucleic acid
carbohydrate
lipid
The hydrogen atom has ____ proton(s) and ____ electron(s).
1, 1
1, 2
1, 0
0, 1
The plasma membrane is made up of ____
nonpolar heads and polar tails
hydrophobic heads and nonpolar tails
hydrophobic tails and hydrophilic heads
polar heads and polar tails
This is an example of ____
passive transport
facilitated diffusion
aquaporin
active transport
How do enzymes catalyze reactions?
orient substrates
strain bonds in substrate
create favorable microenvironment (i.e. favorable pH)
all of the above
How are enzymes regulated?
competitive or noncompetitive inhibition
feedback inhibition
they are not regulated--they are always present in their active form
A & B are correct
Glycolysis converts
Glycogen to glucose
Glucose to pyruvate
Pyruvate to acetyl coA
Oxygen to water
ATP Synthase seen in the electron transport chain is powered by
ATP
hydrogen ions moving down their concentration gradient
NADH
ADP
Photosynthesis produces _____ as a waste product.
oxygen
carbon dioxide
methane
none of the above
In photosynthesis, light is needed
at the photosystems only
to activate rubisco
in the calvin cycle
all of the above
The light reactions create ___ which feed into the Calvin cycle.
ATP and NADPH
CO2 and O2
H2O and ATP
CO2 and glucose
Hardy-Weinberg equilibrium describes a non-evolving population.
True
False
Which of the following describe the cretaceous extinction?
A beautiful meteor shower
a sudden mass extinction of three-quarters of the plant and animal species on Earth, due to a massive asteroid
the greatest mass extinction event in Earth's history, due to global warming/climate change, ocean warming and acidification, Pangea forming, and more.
a period of evolutionary change in which many new species evolve from a common ancestor.
