BSC 1005 EXAM 2 questions with verified answers
active transport Ans✓✓✓ requires energy, movement against a conc
gradient
autotrophs Ans✓✓✓ primary producers provide initial source of
energy for ecosystems. e.g. plants, phytoplankton, bacteria &
archaebacteria
chemosynthesis produces Ans✓✓✓ chemosynthesis bacteria
Chloroplasts Ans✓✓✓ energy producer for plants, algae &
phytoplankton
consumers Ans✓✓✓ an organism that obtain energy & nutrients from
feeding on other organisms & their remains
Controls on the cell cycle Ans✓✓✓ cell division & growth are
controlled by:
a) density-dependence inhibition
b)growth factors
c)multiple checkpoints in cell cycle
Cytokinesis Ans✓✓✓ follows last stage of mitosis. cytoplasm divides
into two
, Eukaryotes Ans✓✓✓ complex organism with a nucleus, only plant type
has cell wall, no surface projection & has organelles enclosed by a
membrane.
Function of the nucleus? Ans✓✓✓ controls center of the cell, contains
DNA
G1 and G2 Ans✓✓✓ G1 is the first growth phase portion before the S
phase where DNA synthesis occurs.
G2 is 2nd growth phase portion after the S phase where DNA synthesis
occurs.
Heterotrophs Ans✓✓✓ consumers consume organic material from
other organism
How many cells are produced by mitosis? are they diploid or haploid?
Ans✓✓✓ 2 daughter cells, diploid
hypertonic Ans✓✓✓ more solute conc. than cell, cell loses water
hypotonic Ans✓✓✓ less solute conc. than cell, cell gains water
Isotonic Ans✓✓✓ same conc. as cell, no net change
active transport Ans✓✓✓ requires energy, movement against a conc
gradient
autotrophs Ans✓✓✓ primary producers provide initial source of
energy for ecosystems. e.g. plants, phytoplankton, bacteria &
archaebacteria
chemosynthesis produces Ans✓✓✓ chemosynthesis bacteria
Chloroplasts Ans✓✓✓ energy producer for plants, algae &
phytoplankton
consumers Ans✓✓✓ an organism that obtain energy & nutrients from
feeding on other organisms & their remains
Controls on the cell cycle Ans✓✓✓ cell division & growth are
controlled by:
a) density-dependence inhibition
b)growth factors
c)multiple checkpoints in cell cycle
Cytokinesis Ans✓✓✓ follows last stage of mitosis. cytoplasm divides
into two
, Eukaryotes Ans✓✓✓ complex organism with a nucleus, only plant type
has cell wall, no surface projection & has organelles enclosed by a
membrane.
Function of the nucleus? Ans✓✓✓ controls center of the cell, contains
DNA
G1 and G2 Ans✓✓✓ G1 is the first growth phase portion before the S
phase where DNA synthesis occurs.
G2 is 2nd growth phase portion after the S phase where DNA synthesis
occurs.
Heterotrophs Ans✓✓✓ consumers consume organic material from
other organism
How many cells are produced by mitosis? are they diploid or haploid?
Ans✓✓✓ 2 daughter cells, diploid
hypertonic Ans✓✓✓ more solute conc. than cell, cell loses water
hypotonic Ans✓✓✓ less solute conc. than cell, cell gains water
Isotonic Ans✓✓✓ same conc. as cell, no net change
