WorksheetsNC Fall Semester Review 1
Total questions: 20
Worksheet time: 20mins
What phase is pictured?
Prophase
Anaphase
Metaphase
Cytokinesis
What is the significance of this process?
The process allows organisms to grow and heal.
The process produces clones of the parent organism.
The process copies DNA before cell division.
The process creates genetic variation in the resulting cells.
Use the information below to answer the question that follows.
Original Strand GAC ATT TAG CCC GGG
Mutated Strand GAC AAT TAG CCC GGG
The DNA strand above was mutated as shown. What happened in the mutated strand?
base-pair substitution
deletion of a base
addition of a base
nothing happened
The model shows a mutation to a partial sequence of bases in a gene.
Which type of mutation does the model demonstrate?
deletion
insertion
subsitution
translocation
Students are modeling mRNA during the process of protein synthesis. Which answer choice correctly describes the model of the mRNA strand being transcribed?
The mRNA strand is complementary to the DNA template strand; however, uracil instead of adenine is paired with thymine.
The mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine.
The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of adenine is paired with thymine.
The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of thymine is paired with adenine.
A model of a biological process is shown.
What is the purpose of this process?
To translate the genetic code into a specific sequence of amino acids
To synthesize amino acids used to unzip strands of DNA and copy the genetic code
To assemble nucleotides in an mRNA chain along a DNA template
To replicate the DNA of an organism before cell division
In Texas Longhorn cattle, coat coloration is an inherited trait. What is the genetic basis of coat-color variation in Texas Longhorn cattle?
Differences in the nucleotide sequences of genes
Differences in the numbers of chromosomes in cells
Differences in the diets of individual cattle
Differences in the environmental conditions of different geographic areas
Some angelfish colors are determined by codominance. Possible phenotypes and genotypes of angelfish colors are shown.
Which are the expected phenotypes of offspring resulting from a cross between a black angelfish and a black-lace angelfish?
50% black; 50% black lace
50% Silver; 50% black
25% Silver; 25% black: 50% black lace
25% Silver; 50% black: 25% black lace
In humans blood type is determined by the A, B, and O alleles. The A and B alleles are codominant to each other and dominant over the O allele. An individual with the AO genotype and an individual with the BO genotype can produce offspring with which of the following phenotypes?
O only
A or B only
A, B, or O only
A, B, AB, or O
Which statement best describes the relationship between the products of photosynthesis and the reactants in cellular respiration?
The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy.
The products of photosynthesis combine with the reactants in cellular respiration to remove ATP from cells.
The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light.
The products of photosynthesis change the structure of the reactants in cellular respiration in the presence of light.
Adenosine Triphosphate is the primary source of energy for all cells. When comparing the products of cellular processes, which process is responsible for the production of ATP?
Photosynthesis
Phagocytosis
Cellular Respiration
Excretion
Which type of cellular transport is shown.
Which description best identifies this type of cellular transport?
WHich
Active transport, because energy is being used to move molecules against the concentration gradient
Facilitated diffusion, because energy is being used to move molecules with the concentration gradient
Osmosis, because energy is not being used to move molecules with the concentration gradient
Endocytosis, because energy is not being used to move molecules against the concentration gradient
e diagram below represents the cell cycle.
When cells leave the cell cycle, they exit during G1 phase and then enter G0 phase, a resting period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 phase before entering S phase. Cancer cells are different because they cannot enter G0 phase and are likely to do which of the following?
Fail to complete S phase
Mutate during G1 phase
Repeat the cell cycle continuously
Die after completing mitosis
A patient came to the doctor’s office for an annual check-up. Given that cancer cells do not respond to signals that normally regulate the growth of most cells, which of the following test result(s) may suggest the patient has cancer?
I, II
II, III
II, IV
I, III
Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly’s tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical reaction that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light. Which of the following best describes how the luciferase enzyme speeds up the chemical reaction?
Fi
Luciferase increases the amount of time the light is visible.
Luciferase decreases the amount of energy required for the reaction to start.
Luciferase increases the number of sites on luciferin that must bind to oxygen.
Luciferase decreases the temperature of the environment inside the body of the firefly.
Lactose is found in milk products. It is converted ctose is found in milk products. It is converted by the body into a usable form in a series of chemical reactions. The diagram shows the series of reactions that convert lactose into a usable form.
If Enzyme 2 is denatured, the levels of which substance will increase?
Lactose
Galactose
Galactose-1-phosphate
Glucose-6-phosphate
A table of four types of carbohydrates is shown.
Which list correctly matches the functions to the types of carbohydrates?
Energy: glycogen and starch Structure: cellulose and chitin
Energy: cellulose and chitin Structure: glycogen and starch
Energy: chitin and glycogen Structure: cellulose and starch
Energy: cellulose and starch Structure: chitin and glycogen
In which organelle is glucose connected to ATP through cellular respiration?
nucleus
mitochondria
ribosome
chloroplast
When comparing prokaryotes to eukaryotes, bacteria contain all of the following except --
ribosomes
plasma membrane
chromosomes
mitochondria
A partial DNA segment and an mRNA codon chart are shown.
3 T C A T G C A T G 5
What amino acid sequence is encoded in the partial DNA segment?
Serine – Threonine – Tyrosine
Serine – Serine – Tyrosine
Serine – Threonine – Methionine
Serine – Alanine – Methionine
