9) b prokaryotes acquire genes from eukaryotes many times but reverse has never happened
this tranfer of gene occur due to horizontal gene transfer technique.
eukaryotes are more complexed and advance then prokaryotes.
10) c) horizontal gene transfer was so common long ago that the tree of life should be a tangled mess of branches.
Which of the following statements is accurate, at least according to our present knowledge? a. Prokaryotes...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some cells are in direct contact with the environment. Exterior cells receive environmental signals directly, whereas interior cells receive environmental signals indirectly Exterior cells are highly differentiated, whereas interior cells are not differentiated. Interior cells cannot grow as fast as exterior cells without mechanisms to transfer nutrients between cells. Signals transferred from exterior cells to interior cells can activate or repress gene expression in the...
or the following anatomical structures, which is homologous to the bones in the wing of a bird? Albones in the hind Iimb of a kangaroo C) bony rays in the tail fin of a tlving fish B) chitinous struts in the wing of a batterfly D) bones in the fipper of a whale 25 Which of the following evidence most strongly supports the oommon origin of all life on Earth? All organisms A) require energy B) use essentially the same...
Which of the following statements regarding the Hardy-Weinberg Equation is TRUE? Answers: It can only be used when allele and genotype frequencies remain constant across generations in a population It can only be used when allele and genotype frequencies change across generations in a population It has no assumptions It mathematically shows how recessive alleles in a population decrease over time It reveals when allele frequencies change over time in a population Assuming Hardy-Weinberg Equilibrium, what percentage of individuals in...
4.) Among the following six statements given below which two best account for the results obtained by the researchers who produced Figure 1? 1. Low glucose conditions caused mutations that made individual E. coli cells better suited to these conditions 2. Daughter cells acquired the ability to tolerate low-glucose conditions as they received enzymes and membrane components that had been modified by their mother cell. 3. The initial E. coli population may have included some cells whose genes favored their...
MUN for the rapid SA can be enormously benehciarlo NS FOR FURTHER REVIEW be found in the answer section at the back wers only after you have attempted to solve th at the back of this d to solve the ques- Answers to these questions can be found in the study guide. Refer to the answers only after you tions ON JONr Own. Multiple Choice 1. DNA genomes are found in: a. All organisms and all viruses b. All organisms,...
Microbiology study guide questions. Please Help! s. which of the following statements about water activity is not true? a) many fungi can tolerate aw levels of 07-0.8 b) many microorganisms grow well at an aw of 0.98 e sear water has an aw of 0.98 e-xerephiles thrive in dry conditions DNA typically becomes disordered below an a of o.90 Which of the following descriptions about ribosome structure is not true? a) 80s is the size of the intact functional ribosome...