Question 1 (2 points)
Which statement about evolution is FALSE?
Question 1 options:
According to evolutionary theory, you are related to a bacterium, to a yeast cell, to a snake, and to a whale. In fact, you are related to every species now alive on Earth, and to fossil species like dinosaurs as well.
Natural selection acts on genetic differences within a population to cause evolution. Individuals do not evolve.
Natural selection is about slow but steady progress. Through it, populations constantly get better-adapted. When this process is completed for all populations, evolution will come to a stop.
Evolution occurs constantly, without end; there is no endpoint in evolution.
Question 2 (2 points)
Negatively charged particles are found where in an atom?
Question 2 options:
In the nucleus
In a single layer outside the nucleus
In multiple layers outside the nucleus
Both inside and outside the nucleus
Question 3 (2 points)
Which characteristic of water protects fish when a lake freezes?
Question 3 options:
water is less dense as a solid
water as a solvent
all of the above
Question 4 (2 points)
You have a solution that has a pH of 8 and need it to be pH 5. What do you do?
Question 4 options:
Add a base
Add an acid
Add a buffer
Question 5 (2 points)
What characteristic of carbon makes it a good backbone for creating diverse and durable molecules?
Question 5 options:
Carbon is a large atom.
Carbon forms four covalent bonds.
Carbon forms hydrogen bonds.
All of the above
Question 6 (2 points)
Which of the following structures can be found together in eukaryotic cells?
Question 6 options:
cytoplasm and ribosomes
cytoplasm and plasma membrane
DNA and ribosomes
ribosomes and endoplasmic reticulum
Question 7 (2 points)
Which of the following reactions or pathways is catabolic?
Question 7 options:
Converting glucose to carbon dioxide and water (cellular respiration).
Making starch from many glucose molecules.
Photosynthesis: which builds glucose from carbon dioxide using energy from light.
Making ATP from ADP and Phosphate.
Question 8 (2 points)
In a metabolic pathway, a typical control mechanism is to have: ________
Question 8 options:
the final product inhibit the enzyme responsible for its own production.
the final product inhibit an early step.
a reactant inhibit a late step.
a lack of reactant stimulate the pathway.
Question 9 (2 points)
Mitosis results in ______ cells and meiosis results in _______ cells.
Question 9 options:
Question 10 (2 points)
In beans yellow (Y) is dominant to green (y) and smooth (S) is dominant to wrinkled (s). What are the possible genotypes for the offspring of the following cross: YySS and YYSs.
Question 10 options:
YYSS, YYss, yySS, yyss
YS, yS, YS, yS
Yy, SS, YY, Ss
YYSS, YySS, YYSs, YySs