final exam Flashcards
(43 cards)
What is an example of anabolism?
formation of maltose from two glucose
The table shows the approximate energy stores in a man with an average mass.
What can be concluded from the data?
the adipose tissue provides for most of the long term energy storage
The image shows a molecule of oleic acid.
What describes oleic acid?
cis mono saturated fatty acid
The anticodons of three tRNAs and the amino acids they carry are shown in the
table.
tRNA anticodon Amino acid
GCA Arginine
AAU Leucine
CAG Valine
Which base sequence of an mRNA molecule would code for an arginine–leucine–
valine tripeptide?
CGU UUA CUG
What is a consequence of anaerobic cell respiration in muscles?
small yield of readily available ATP and lactate accumulation
Which equation represents a process in yeast that causes bread to rise?
C6H12O6>2C2H5OH+2CO2
A DNA triplet on the strand that is transcribed has the bases TAG. Which anticodon
on tRNA is used in translation?
UAG
What is the arrangement of subunits in a DNA nucleotide?
A nitrogenous base, a deoxyribose sugar molecules, and a phosphate group
What is a difference between two alleles of a gene?
are different versions of a gene meaning they have slightly different DNA sequences at the same location
A molecule of DNA is found to contain 200 guanine bases, representing 25 % of the
total number of bases. How many phosphate groups does this molecule of DNA
contain?
800
What is the minimum number of nucleotides needed to code for a polypeptide
composed of 210 amino acids?
630
The graph shows how the rate of photosynthesis of a green plant varies with CO2
concentration at two different light intensities. The temperature is kept constant at 20 °C.
What is the limiting factor at X?
light intensity
Chromosome numbers vary between species. Which statement refers to humans?
23 pairs of chromosomes
People who suffer from night blindness cannot see well at night because their retinal
cells produce an abnormal form of a protein pigment. Which protein is this?
Rhodopsin
What is a function of the enzyme helicase?
it untwists the double helix and seperates the two DNA strands which makes them available for replication
The karyogram shown belongs to a human being.
What can be deduced from this karyogram?
the person is male with genetic disorder
What prevents plants from converting carbon dioxide into glucose in the dark?
they do not have light
What is the correct arrangement for the components of one strand in a DNA
molecule?
DNA molecules consist of four nucleotides base pairing in the presence of hydrogen bonding
Which statement applies to enzymes?
enzyme function depends on collisions between substrate and active sites
Which enzyme is matched to its function?
DNA polymerase
If a plant is exposed to light, which colour of light would lead to the lowest rate of
oxygen release by a green plant?
green light
two-cell sea urchin (Echinoidea) embryo was physically separated by scientists into
two cells. Each cell, through further embryonic development, became an adult sea
urchin. What is the relationship between the two adult sea urchins?
they are clones
What feature of eukaryotic chromosomes distinguishes them from the
chromosomes of prokaryotes?
eukaryotic chromosomes are located within a membrane bound nucleus
The diagram represents transcription and translation.
RNA ANTICODON
