Midterm 1 Ch. 1-8 Flashcards
scientific theory
an explanation supported by a very large amount of experimental evidence.
A doctor is conducting a study to evaluate the therapeutic use of a drug. He uses a placebo for comparison. The doctor appoints a pharmacist to distribute the drug or placebo to eligible patients. This experiment would be double-blind if
the subject and the researcher are blinded about which arm the subject is assigned to.
Celebrities Jenny McCarthy and Jim Carrey are big proponents of anti-vaccination claiming that it causes autism in children. Their testimonial in news media is a classic example of ___________.
anecdotal evidence
If an inductively reasoned hypothesis makes sense, based on all available and historical observations, then
hypothesis might be false
factor in an experiment that can be manipulated.
variable
Because the electrons in a water molecule are shared unequally between hydrogen and oxygen, water is said to be
polar
found in the nucleus of an atom
neutrons and protons
What is the pH of a neutral solution?
7
Greenhouse gases work by absorbing (and trapping) heat that would normally escape our atmosphere and dissipate into outer space. CO₂ is a green house gas, and CO₂ levels in the atmosphere are growing at an increasing rate and are positively correlated with rising average global temperature. With the information provided from the preceding two true statements, which of the following statements are true?
Rising atmospheric CO₂ levels is responsible for global warming
which is least likely to be found in nonliving things?
homeostasis
base-pairing rule of nucleic acids
A-T, G-C
Identify the statement that is NOT correct when describing Eukaryotes.
The nucleolus is present within the nucleus in the eukaryotic cell.
Organelles within the eukaryotic cell are surrounded by membranes.
The genetic material, DNA, is contained within a separate membrane-bound compartment within the eukaryotic cell.
The eukaryotic cells have a nucleus and other organelles.
The genetic material, DNA, is contained within a separate membrane-bound compartment within the eukaryotic cell.
What are the two halves of a duplicated chromosome called?
sister chromatids
Consider a strand of DNA with the sequence GAATTCGGCA. What is the sequence of the complementary strand?
CTTAAGCCGT
Autosomal recessive traits will not appear
under heterozygous conditions
A typical gene contains the instructions for making a
protein
In pea plants, the allele for purple flowers (P) is dominant to the allele (p) for white flowers. In a cross between a purple-flowered plant and a white-flowered plant, all 73 of the offspring plants had purple flowers. Which of the following most likely describes the cross above?
PPxpp
An organic compound always contains one or more atoms of
carbon
processes of cellular respiration in order
Glycolysis, Citric acid cycle, Electron transport chain
Many scientists believe that the global warming observed over the past 100 years has been caused by elevated levels of gases in the atmosphere. Which of the following gases is primarily responsible for this problem?
carbondioxide
When muscle cells undergo anaerobic respiration, it leads to the build of
lactic acid
How many different types of offspring (genotypes) is/are possible as a result of the cross FfxFf
3
How could two parents with curly hair (a dominant condition) have boys and girls with straight hair (a recessive condition)?
The recessive condition could happen if both parents were heterozygous carriers of the recessive allele.
Each of the following is a common feature of cancer cells EXCEPT
metastasis.
uncontrolled division.
anchorage independence.
Contact inhibition.
Contact inhibition.
