Deck 16 (301 - 320) Flashcards
- A complementary pair of bases in the molecule of DNA is:
a. A-T
b. A-C
c. A-G
d. A-U
a. A-T
- The Miller - Urey experiment demonstrated:
a. how RNA could have been the first organic molecule
b. the kinds of molecules that could have been produced on the early earth
c. that simple molecules could not have evolved spontaneously
d. the formation of the first cells
b. the kinds of molecules that could have been produced on the early earth
- Blood plasma of a person with the A blood group contains ?
agglutinin anti-B
- Cormobionta are:
a. thallus plants
b. vessel plants
c. green algae
d. red algae
b. vessel plants
- The cell membrane consists in:
a. one glycoprotein layer
b. one lipid and saccharide layer
c. a phospholipid bilayer and proteins
d. two layer of monosaccharides
c. a phospholipid bilayer and proteins
- What molecule produced in experiments performed by others (using Miller - Urey’s model) is key to explaining the evolution of the hereditary molecules (DNA and RNA):
a. oxygen
b. proline
c. aspartic acid
d. adenine
d. adenine
- Blood of a person with the AB blood group does not contain:
a. antigen B
b. antigen A
c. antigens A, B
d. antibody anti-A
d. antibody anti-A
- Plastids that are directly involved in photosynthesis are ?
chloroplasts
- Genes are located on?
chromosomes
- Evidence indicates that microfossils already existed at least:
a. 4,5 billion years ago
b. 3,5 billion years ago
c. 1,3 billion years ago
d, 600 million years ago
b. 3,5 billion years ago
- A person with the AB blood group:
a. has antigens A and B
b. has agglutinin anti-A
c. has agglutinin anti-B
d. has agglutinins anti-A and anti-B
a. has antigens A and B
- Consistent layer on the outer wall of the leaves and stalks is called ?
cuticle
- Haploid set of chromosomes of eukaryotic organisms is present in:
a. nerve cells
b. somatic cells
c. gametes
d. muscle cells
c. gametes
- Which characteristic do eukaryotic and prokaryotic flagella have in common:
a. chemical composition
b. structure
c. location in the cell
d. function
d. function
- Nerve tissue is formed by ?
nerve cells
- Structures connecting plant cells are called ?
plasmodesms
- Prokaryotic chromosomes are:
a. formed by two circular DNA molecules
b. formed by the circular RNA molecule
c. placed in the cytoplasm
d. arranged into homologous pairs
c. placed in the cytoplasm
- The microtubules of cilia and flagella are organised in a characteteristic 9+2 pattern, and they slide past one another:
a. true
b. false
a. true
- Neuron (nerve cell):
a. has one eccentric extension - dendrite
b. has dendrites, which lead nerve signals into the cell bodies
c. has dendrites, which lead nerve signals out of the cell bodies
d. has a centripetal axon
b. has dendrites, which lead nerve signals into the cell bodies
- Exact place of the gene on chromosome is ?
locus
