Show:
Week1&2
Week3&4
Week 5&6
Week 7&8
Week1-8
100
How many ul is a L?
1×10−6
100
Rods, spheres and spirals are shapes of cells observed in
bacteria
100
How is it called the chamber that we use to count cells?
Hemocytometer
100
DNA is soluble in....
Water
100
A restriction site: a. Encodes for an enzyme that cut DNA b. An enzyme that restricts the growth bacteria c. A stretch of DNA that is recognized and cleaved(cut) by a restriction enzyme d. A random sequence
c. A stretch of DNA that is recognized and cleaved (cut) by a restriction enzyme
200
If your micropipette is set at 080, how much volume you are about to dispense?
It is impossible to give the right answer without knowing the maximum amount of volume that the pipette in use is able to dispense is
200
A cell that is small and simple, has circular DNA, no nucleus or membrane bound organelles. What type of cell is it?
Prokaryotic
200
Which part of the DNA carries the genetic information: a. Sugar-phosphate backbone b. Base sequence c. Base sequence
b. Base sequence
200
In what phase of mitosis the chromatin has the highest degree of condensation?
Metaphase
200
In Prometaphase I of meiosis homologus chromosomes pair is synapsis.What is the event that follow called? HINT: This event causes genetic diversity.
Crossing over
300
The second stop of a micropipette is used to...
Full expel the liquid
300
Compound microscopes: A. Can generally magnify objects about 10,000 times without blurring. B. Work by reflecting electrons off the surface of an object being studied C.Typically provide more resolution than an inverted microscope. D. Use light and glass lenses to magnify an image.
D. Use light and glass lenses to magnify an image.
300
DNA is: a. Positively charged b. Negatively charged c. Neutrally charged
b. Negatively charged
300
What cellular process would you expect to immediately disrupt if you added a drug that distroys microtubules? A. Mitosis B. Protein production C. Transcription D. Fat metabolosm
A. Mitosis
300
At the end of mitosis, one cell has become how many? a. 2 genetically different daughter cells b. 2 genetically identical daughter cells c. 4 genetically different daughter cells d. 4 genetically identical daughter cells
b. 2 genetically identical daughter cells
400
Recombinant DNA (rDNA): a. Naturally found in the nucleus b. Naturally found in mithochondia c. Naturally found in bacteria d. Artificially made in the lab
d. Artificially made in the lab
400
What is a hypothesis? A. Your best “educated guess” of what the answer to your question will be. B. An untestable statement. C. Whatever the teacher tells you is the truth. D. An experiment
A. Your best “educated guess” of what the answer to your question will be.
400
What is the correct base pairing: a. Purin-purin b. Purin-pyrimidin c. C-G
c. C-G
400
Meiosis is the process that creates what type of cell? A.Somatic B. HeLa C. Stem cell D.Gamete
D.Gamete
400
At the end of meiosis, one cell has become how many? a. 2 genetically different daughter cells b. 2 genetically identical daughter cells c. 4 genetically different daughter cells d. 4 genetically identical daughter cells
c. 4 genetically different daughter cells
500
What happens to the image of a specimen in the compound microscope?
Reversed and upside down
500
How do you make a conclusion? A. You look at your hypotheses and choose which one you like best. B. You compare the data from your experimental results to the prediction you tested. C. You keep making different tests until they show what you want to see D. You guess what the results should be.
B. You compare the data from your experimental results to the prediction you tested.
500
In a chromosome, sister chromatids are joined together by what? a. Centromere b. Centriole c. Chromosome d. Cytoplasm
a. Centromere
500
What is the complementary base sequence of the following sequence ATGCCTACT: a. TCATCCGTA b. TACGGATGA c. AGTAGGCAT
b. TACGGATGA
500
What is the natural function of restriction enzymes? a. Protect bacteria by methylating viral DNA b. Protect bacteria by cleaving viral DNA c. Protect bacteria by methylating their own DNA d. Allow researchers to perform molecular cloning
b. Protect bacteria by cleaving viral DNA