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BIOL 101 – Straighterline Questions and
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The smallest unit that has all of the characteristics of life is the ✔✔Cell
Nutrient molecules are used to build cellular structures or for energy. This best represents which characteristic of life? ✔✔Living things acquire materials and energy from the environment.
Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life? ✔✔Living things have levels of hierarchical organization.
The blueprints for structural organization and metabolism are contained in ____, and the offspring receive copies of these instructions ___. ✔✔DNA; from the parent
If a new anti-cancer drug is found to be effective in initial tests with mice, what might researchers conclude? ✔✔The drug is effective in the mouse model; it must still be tested in humans.
Technology is the __________________________. ✔✔application of scientific knowledge for a practical purpose.
Which statement regarding science technology is false? ✔✔Science technology is a basis for all ethical or moral decisions.
Which of the following is a potential consequence if people stop using technology in the agriculture industry? ✔✔There could be a significant decrease in the amount of food produced.
A multicellular, photosynthetic organism with complex, specialized cells and tissues would most likely be assigned to ✔✔Kingdom Plantae
Which of the following is one of the domains of life? ✔✔Eukarya
Which sequence of classification categories is in the proper order from least to most inclusive? ✔✔species, genus, family, order, class, phylum, kingdom, domain
You have discovered a previously unknown organism. It is multicellular, with a filamentous form, and absorbs food from its environment. Upon microscopic examination, you see that the cells have nuclei. How would you classify this organism? ✔✔Kingdom Fungi
Which of the following is of least importance when concerning the preservation of ecosystems? ✔✔Preservation of ecosystems allows humans to exploit as many resources as possible.
An ecosystem generally requires solar energy, nutrients, decomposers, consumers and ____. ✔✔producers
A community of organisms along with their physical environment constitutes a(n) ✔✔ecosystem.
Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of ✔✔natural selection.
The term "biodiversity" refers to ✔✔the total number of species, variation of species, and the ecosystems in which they live.
All the banded sunfish (Enneacanthus obesus) in a pond would comprise a(n) ✔✔population.
When two glucose molecules combine they form a disaccharide molecule and ✔✔a water molecule.
A covalent bond is ✔✔a sharing of electrons between two atoms. Correct
Which of the following is not a function of ATP within the cell? ✔✔All of the answer choices are functions of ATP within the cell.
Which of the following radiation uses is the one that is most likely to have both beneficial and harmful consequences? ✔✔using radiation to treat a cancer patient
Which of these combinations would be found in a nucleotide? ✔✔base-sugar-phosphate
The backbone of a nucleic acid strand is composed of ✔✔alternating pentose sugars and phosphate groups.
When exercising for 45 minutes, it is actually most important to rehydrate with: ✔✔at least 30 ounces of water, because even a loss of 10% of body water can have a major impact on body function.
Which of the following is consistent with the laws of physics governing energy? ✔✔Eventually, sunlight that is absorbed on the earth returns to the atmosphere as dispersed heat.
Which of the following is a by-product of photosynthesis? ✔✔oxygen
The equation: C6H12O6 + 6O2 → 38 ATP + 6CO2 + 6H2O represents which cellular process? ✔✔cellular respiration
You have discovered an organism that lives inside the gastrointestinal tract and does not contain a nucleus. Based on what you know of cellular respiration, how does it obtain its energy? ✔✔glycolysis
Which of the following is not a consequence of the lactate that results from fermentation in the muscles? ✔✔It is stored in muscle cells for later ATP production.
Where does glycolysis take place within the cell? ✔✔cytoplasm
Why is fermentation essential to humans? ✔✔It is essential when we need a rapid burst of energy.
Fermentation is inefficient in using the energy found in food molecules and the resulting alcohol can be toxic to the organism producing it. Which of the following is not a reason why an organism would utilize fermentation? ✔✔Fermentation is the preferred process, even when oxygen is available.
What are the products of the noncyclic electron pathway? ✔✔H+, O2, ATP, and NADPH
One of the products of the Calvin cycle is ✔✔G3P
What is the value of photosynthesis to humans? ✔✔It will reduce the amount of carbon dioxide in the atmosphere.
Which pathway is the foundation for the majority of ecosystems and food chains on Earth? ✔✔photosynthesis
The failure of which organelle during development can result in a child being born with webbed toes? ✔✔lysosomes
Which of the following cells can be part of a multi-cellular organism, have a nucleus, and have a specialized organelle for energy production? ✔✔eukaryote
If the chloroplast is the result of endosymbiosis, what membrane of the chloroplast represents the plasma membrane of the original prokaryote? ✔✔the inner chloroplast membrane
All of the following are possible origins of cell organelles in eukaryotes EXCEPT ✔✔groups of prokaryotic cells begin to live in a small group, sharing products of metabolism.
Which of the following results in genetic variation? ✔✔Crossing over between homologous chromosomes during Prophase I
Enzymes, the key molecules that help chemical reactions occur in the body are ✔✔proteins
Which intercellular junction allows for the rapid movement of small molecules or ions to flow from one animal cell to the next? ✔✔gap junctions
Which of the following molecules add stiffness and strength to the plasma membrane? ✔✔cholesterol
What two components are commonly found in the extracellular matrix that help resist stretching and provide resilience? ✔✔proteins and polysaccharides
Which type of membrane protein will be used to bind to hormones? ✔✔receptor proteins
According to the fluid-mosaic model of membrane structure, ✔✔proteins float inside or within the phospholipid bilayer.
Kidney dialysis relies on diffusion of various dissolved waste molecules (solutes) across a non- living semipermeable membrane. If the concentration of solutes in the blood increases over time before dialysis is administered, what will happen to the rate of dialysis when it occurs? ✔✔The rate will speed up since the concentration gradient is higher.
You are examining a cell under the microscope that is undergoing cell division and cannot find any asters. What else would not be present in this cell? ✔✔a cleavage furrow
What is the difference between the chromosomes in a secondary spermatocyte and those in a spermatid? ✔✔the chromosomes in secondary spermatocytes consist of two chromatids, the ones in the spermatid consist of only one chromatid
