Deck 16 (301 - 320)

Question 1

301. A complementary pair of bases in the molecule of DNA is:

a. A-T
b. A-C
c. A-G
d. A-U

Answer 1

a. A-T

Question 2

302. 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

Answer 2

b. the kinds of molecules that could have been produced on the early earth

Question 3

303. Blood plasma of a person with the A blood group contains ?

Answer 3

agglutinin anti-B

Question 4

304. Cormobionta are:

a. thallus plants
b. vessel plants
c. green algae
d. red algae

Answer 4

b. vessel plants

Question 5

305. 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

Answer 5

c. a phospholipid bilayer and proteins

Question 6

306. 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

Answer 6

d. adenine

Question 7

307. 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

Answer 7

d. antibody anti-A

Question 8

308. Plastids that are directly involved in photosynthesis are ?

Answer 8

chloroplasts

Question 9

309. Genes are located on?

Answer 9

chromosomes

Question 10

310. 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

Answer 10

b. 3,5 billion years ago

Question 11

311. 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

Answer 11

a. has antigens A and B

Question 12

312. Consistent layer on the outer wall of the leaves and stalks is called ?

Answer 12

cuticle

Question 13

313. Haploid set of chromosomes of eukaryotic organisms is present in:

a. nerve cells
b. somatic cells
c. gametes
d. muscle cells

Answer 13

c. gametes

Question 14

314. Which characteristic do eukaryotic and prokaryotic flagella have in common:

a. chemical composition
b. structure
c. location in the cell
d. function

Answer 14

d. function

Question 15

315. Nerve tissue is formed by ?

Answer 15

nerve cells

Question 16

316. Structures connecting plant cells are called ?

Answer 16

plasmodesms

Question 17

317. 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

Answer 17

c. placed in the cytoplasm

Question 18

318. The microtubules of cilia and flagella are organised in a characteteristic 9+2 pattern, and they slide past one another:

a. true
b. false

Answer 18

a. true

Question 19

319. 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

Answer 19

b. has dendrites, which lead nerve signals into the cell bodies

Question 20

320. Exact place of the gene on chromosome is ?

Answer 20

locus