Biology, 14.12.2019 05:31 itssmookie129
The division of a bacterial cell into two daughter cells(called binary fission) is accomplished by a protein ftsz is very similar to the tubulin subunits that form microtubules in eukaryotes. after the replicated bacterial chromosomes have moved to opposite ends of the cell, a ring of ftsz proteins forms inside the plasma membrane in the region where the cell will divide. as the ftsz ring constricts, the plasma membrane and bacterial cell wall fold in eventually separate into two daughter cells.
plant and animal cells also require cytoskeleton proteins for cytokinesis, although the roles these proteins play differ among bacteria, plants, and animals.
for each of the following, determine if the statement is true or false for each group of organisms:
1. cells divide by constriction of a ring of protein
2. the presence of a cell wall prevents the cell from diving by constriction
3. tubulin or tubulin-molecules function in binary fission(in bacteria) or cytokinesis(in animals and plants)
Answers: 3
Biology, 21.06.2019 21:10
Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.
Answers: 3
Biology, 22.06.2019 05:00
Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.
Answers: 2
Biology, 22.06.2019 08:30
Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.
Answers: 3
Biology, 22.06.2019 11:00
Which short-term environmental changes would a very small asteroid or comet impact on earth most likely cause? check all that apply. flooding extinction craters on surface changes in weather patterns death of organisms and populations
Answers: 2
The division of a bacterial cell into two daughter cells(called binary fission) is accomplished by a...
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