Ultimate Biology Study Guide - Questions & Answers

How do drugs and alcohol affect the function of the smooth endoplasmic reticulum?
1 Answer
Which of the following defines Statutory Law? *1 pointlaws created by government agencieslaws that come from judges' decisions that rely on common sense and previouscaseslaws passed by Congress and state and local governmentslaws based on the constitution
1 Answer
Which of the following processes produces the most ATP? a aerobic respiration b glycolysis c alcoholic fermentation d lactic acid fermentation
2 Answers
Jordan's grandmother uses the juice from squeezed lemons to remove stains from his shirt. He hypothesizes that the juice is the only part of the lemon that is effective at removing the stains, because its an acid. Which two steps would help Jordan determine whether his hypothesis is scientifically supported?He should test the acidity of different parts of the lemon, including the juice, pulp, and skin.He should conduct an opinion poll of residents to see if they agree with his hypothesis.He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain.He should find literature on housekeeping websites that support the use of lemon juice at removing stains.He should compare lemon juice with other acidic juices to see if they all remove stains.
2 Answers
A red blood cell is placed in a 0.9% salt solution. If the cell remains at equilibrium, neither gaining nor losing water,identify the type of solution the cell has been placed in.A)HypertonicB)IsotonicHypotonicD)Hydrostatic
1 Answer
True or False? No organism can maintain homeostasis by itself
1 Answer
Which organisms in an ecosystem are most likely to be affected by bioaccumulations of toxins? Explain.
1 Answer
A teacher performing a demonstration finds that a piece of cork displaces 24 mL of water. The piece of cork has a mass of 6 g. What is the density of the cork?
1 Answer
Pls help I need the answers ASAP Balance the following equations. A few of the equations are balanced and will not needanything done to them. If the equation is already balanced write the word balanced asyour answer.
1 Answer
Protein kinase A (PKA) is: A) activated by covalent binding of cyclic AMP. B) affected by cyclic AMP only under unusual circumstances. C) allosterically activated by cyclic AMP. D) competitively inhibited by cyclic AMP. E) noncompetitively inhibited by cyclic AMP.
1 Answer
Why do spring and neap tides occur during a specific moon phases?
1 Answer
he basic functional unit of the nervous system is the neuron. What is the major function of this cell type
1 Answer
The genetic material of an organism is made up of?
2 Answers
a stem is responsible for providing support to the plant. A bract, rhizome or runner is a type of stem that grows underground
1 Answer
A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old
1 Answer
Which option describes a strong argument against the development of nuclear power? A nuclear power company is proposing a nuclear power plant near a quiet, small waterside town. The company is promoting this development by stating that nuclear power does not produce pollutants.
1 Answer
DNA polymerase is an enzyme that catalyzes the synthesis of new DNA during the S phase of cellular division. If an organism suffered from a disease that resulted in a lowering of the pH in its body tissues, what effect would this have on the rate of cellular division?
1 Answer
If the sequence of an mRNA moving through the ribosome has the sequence 5'AUGCCAGCGGAUCGC3', what is the sequence of the polypeptide produced from translating this segment
1 Answer
Describe an example of a relationship between a cell organelle and a task a cell must perform
2 Answers
How does the formation of NAD+ differ between aerobic and anaerobic respiration?A. NAD+ is formed in aerobic respiration by a fermentation process and formed in anaerobic respiration by oxidation of NADH.B. NAD+ is formed by a fermentation process in anaerobic respiration by the conversion of pyruvate into lactate and by simple oxidation of NADH in aerobic respiration. C. Under aerobic conditions, the electron acceptor is a molecule other than oxygen for NAD+ production, whereas under anaerobic conditions the electron acceptor is oxygen. D. NAD+ is formed by the breakdown of pyruvate to form oxaloacetate in anaerobic respiration whereas in aerobic respiration it is formed by the breakdown of pyruvate into lactic acid or alcohol.
1 Answer
Donna has observed that her father can control the speed of their grandfather clock by adjusting theheight of the weight on the end of the pendulum. Donna thinks that the pendulum will move faster whenthe weight is lowered, and wants to test her idea. Donna gets a stopwatch and measures the time it takesfor the pendulum to swing twenty times when the weight is moved to its lowest position. Donna begins tomove the pendulum up by 1 cm and continues to measure the time for twenty swings of the pendulum.Donna records her data.
1 Answer
For each statement below, write true or false. ______ 5. Seismic waves change speed and direction when they encounter different materials.______ 6. P-waves travel through Earth's mantle.______ 7. S-waves do not travel through Earth's mantle.______ 8. Surface waves are the first to arrive at a seismic station.______ 9. P-waves are bent when they strike the core.______ 10. On seismograms, seismic waves recorded from more distant facilities are closer together than those recorded from facilities close to the epicenter.______ 11. S-waves do not enter the core because they cannot travel through solids.______ 12. Seismologists have reasoned that Earth's outer core must be liquid based on the disappearance of S-waves.______ 13. Studies of how waves reflect deep inside Earth show that Earth's inner core is solid.______ 14. The P-wave shadow zone does not receive direct P-waves.
2 Answers
Donna has observed that her father can control the speed of their grandfather clock by adjustingthe height of the weight on the end of the pendulum. Donna thinks that the pendulum will movefaster when the weight is lowered, and wants to test her idea. Donna gets a stopwatch andmeasures the time it takes for the pendulum to swing twenty times when the weight is moved toits lowest position. Donna begins to move the pendulum up by 1 cm and continues to measurethe time for twenty swings of the pendulum. Donna records her data.What is would the hypothesis be, Independent/dependent variable, the constants and the control group of this experiment?Thanks!
1 Answer
Drag each tile to the correct location. Not all labels will be used. Identify the phases in the life cycle of small and big stars. supernova: In this stage, the star collapses and produces elements heavier than iron. planetary nebula: In this stage, the star emits strong energy pulses that push away the outer layers creating a cloud of ionized gas around the core. neutron star: In this stage, the star has reduced to an extremely dense core. white dwarf: In this stage, the star has reduced to a dense core.
1 Answer