Deck 15 (281 - 300)

Question 1

281. What type of mammalian cells are without nucleus?

Answer 1

red blood cells

Question 2

282. Before amphibians could be successful on land, the had to:

a. develop a more efficient heart
b. develop lungs
c. develop a way to prevent drying
d. all of the above

Answer 2

d. all of the above

Question 3

283. Thymus of man:

a. play an important role in the lymphatic system
b. is best developed in adult individuals
c. is an organ where B-lymphocytes mature
d. is usally replaced in adulthood by muscle tissue

Answer 3

plays an important role in the lymphatic system

Question 4

284. Cultivation of cells or tissues out of the organism is designated as:

a. in vivo
b. in natura
c. in vitro
d. in infinitum

Answer 4

c. in vitro

Question 5

285. The principle of independent segregation is frequently referred to as ?

Answer 5

Mendel’s first law

Question 6

286. Archaeopteryx had which key bird-like features:

a. hollow bones
b. featherswell
c. well-developed collarbone
d. b + c

Answer 6

d. b + c

Question 7

287. Tonsils of man:

a. are the biggest lymphatic organ
b. are the central organ of the lymphatic system
c. are considered as an immunological filter of blood
d. are situated in laryngeal epithelium

Answer 7

are situated in laryngeal epithelium

Question 8

288. Intake of substances in the form of solution is called ?

Answer 8

pinocytosis

Question 9

289. The Dutch botanist Hugo de Vries believed, that hereditary changes are caused only by:

a. adaptation
b. mutation
c. recombination
d. conjugation

Answer 9

b. mutation

Question 10

290. According to the scientific theory of the origin if life on earth, life arose spontaneously from inanimate chemicals. Do scientists think this process is still ongoing on earth today:

a. yes, it probably is ongoing
b. no, because conditions on earth have changed and are no longer conductive to spontaneous evolution of life

Answer 10

b. no, because conditions on earth have changed and are no longer conductive to spontaneous evolution of lif

Question 11

292. Transfer of substances as a rule against the concentration gradient is ?

Answer 11

active transport

Question 12

293. Mark the correct statement/s about the mRNA molecule:

a. it is double stranded
b. it is single stranded
c. its structure resembles a clover leaf
d. its structure resembles a lime tree leaf

Answer 12

b. it is single stranded

Question 13

294. Which of the following criteria is necessary and sufficient by itself to define life:

a. movement
b. sensitivity
c. complexity
d. none of the above

Answer 13

d. none of the above

Question 14

295. Non-specific phagocytary immune defence of man is performed by ?

Answer 14

eosinophils

Question 15

296. The universal transporter of energy in a cell is the molecule of:

a. ADP
b. NADPH+
c. ATP
d. cAMP

Answer 15

ATP

Question 16

297. Transmission of genes into the daughter cells is provided by:

a. mitotic division
b. reduplication of the mRNA
c. transcription of the RNA
d. conjugation

Answer 16

a. mitotic division

Question 17

298. Which of the following possible explanations of the origin of life on earth allows testable hypotheses to be constructed:

a. evolution
b. spontaneous origin
c. extraterrestrial origin
d. none of the above

Answer 17

a. evolution

Question 18

299. Blood groups of man are determined:

a. by the type of antigen present in blood plasma
b. by ability of erythrocytes to produce antibodies
c. by individual type of plasmatic proteins in any individual
d. by the presence of specific antigens in the membrane of erythrocytes

Answer 18

d. by the presence of specific antigens in the membrane of erythrocytes

Question 19

300. Cell organelles typical for plant cells include:

a. plastids
b. centrioles
c. lysosomes
d. intercalar discs

Answer 19

a. plastids

Question 20

291. Microorganisms in human body are usually retained:

a. in the tissue fluid
b. in the blood plasma
c. in the lymph nodes
d. in blood plasma

Answer 20

in the lymph nodes