Deck 13 (241 - 260) Flashcards
- The nucleus is delimited by:
a. one membrane
b. two membrane
c. no membranes
d. nuclear wall
b. two membranes
- All of the following have been proposed as a type of protocell except:
a. coacervates
b. endosymbionts
c. microspheres
d. micelles
b. endosymbionts
- Kidneys of man produce:
a. urea
b. adiuretin
c. urine, which contains water and all the soluble components in equal concentration as those in the blood plasma
d. erythropoietin
Erythropoietin
- Managing, coordinating and reproductive centre of the cell is ?
nucleus
- In the DNA synthesis, the following are the basic monomers:
a. molecules of ATP
b. amino acids
c. proteins
d. deoxyribonucleotides
d. deoxyribonucleotides
- Which of the following organelles is found in the plant cells but not in animal cells:
a. ribosomes
b. mitochondria
c. peroxisomes
d. none of the above
d. none of the above
- Urea in the human body is formed in the ?
liver
- rRNA is formed in ?
nucleolus
- Enzymes are:
a. lipids
b. proteins
c. saccharides
d. deoxyribonucleotides
b. proteins
- Most of the cells are very small. A typical eukaryotic cell, both plant and animals will occur in which of the following range:
a. 1mm to 100 um
b. 10 um to to 1 um
c. 100 um to 10 um
d. 1 um to 100 um
c. 100 um to 10 um
- The filtrate arising in the glomerules of human kidney:
a. is called primary urine
b. is called final urine
c. is identical with human blood plasma
d. is identical with human blood plasma without blood amino-acids
is called primary urine
- Mitochondria are separated from cytoplasm by ?
double membrane
- Chromoplasts are a kind of:
a. pigments
b. nutrients
c. plastids
d. vacuoles
plastids
- The cell that measures 200 um diameter compared to a cell that measures 20 um will have 100 times the surface area but 1000 times the volume:
a. true
b. false
a. true
- The liquid filtered through capillary walls into the Bowmans capsule is called ?
primary urine
- Structures of animal cells with large content of hydrolytic enzymes are ?
lysosomes
- The mRNA has the function:
a. in the translation
b. in the replication of DNA
c. in the transport of nutrient
d. in the energetic metabolism
a. in the translation
- Because they have chloroplasts for energy production, plant cells lack mitochondria:
a. true
b. false
b. false
- During passage of urine through convoluted tubules and Henle’s loop:
a. part of water is reabsorbed
b. waste substances are reabsorbed
c. waste substances pass into the blood through the tubules walls
d. blood is filtered
a. part of water is reabsorbed
- Substances that do not have metabolic activity and are considered to be non-living cell components are:
a. viroids
b. viruses
c. inclusions
d. virions
c. inclusions
