WorksheetsGen Bio Lab
Total questions: 23
Worksheet time: 23mins
Which of the following statements are correct? Check all that apply.
The images show cells with amyloplast, which is a type of ergastic substance.
This specimen is the lower epidermis of boatlily leaves.
The width of the condenser lens aperture used to observe the images from narrowest to widest: C, A, B.
When the iris diaphargm is widen, the image contrast is decreased.
What is the wavelength of fluorescence occurring in the tube of pigment extracts?
400-450 nm
500-580 nm
650-700 nm
400-450 nm and 650-700 nm
Which of the pigments is most soluble in organic solvent?
Chlorophyll a
Chlorophyll b
Carotene
Xanthophyll
Anthocyanin
According to our laboratory results, which of the pigments has the lowest Rf value?
Chlorophyll a
Chlorophyll b
Carotene
Xanthophyll
Anthocyanin
In the experiment with Hydrilla verticillata in NaHCO3 solution, the results were recorded in the table. Which of the following is true? Check all that apply.
a > b
c > d
e = O2
e = CO2
What is the gas in A? What process(es) is (are) occurring in the yeast cells below A?
Glycolysis / O2
Glycolysis / CO2
Glycolysis + Krebs cycle / O2
Glycolysis + Krebs cycle / CO2
What would happen if NaF is added?
The gas volume in A and ATP generated in B are increased.
The gas volume in A and ATP generated in B are decreased.
The gas volume in A is increased, but ATP generated in B is decreased.
The gas volume in A is decreased, but ATP generated in B is increased.
Select all that are true.
The cells are in hypotonic solution.
Before adding KCl to the cells, water potential of the KCl solution is lower than water potential inside the cells.
No. 1 is the vacuole.
No. 2 is the plasma membrane.
No. 3 is the cytoplasm.
Which of the following statement is true? Select all that apply.
Guttation is the loss of water in the form of droplet.
Hydathode is the opening at the end of phloem.
Tomato seedlings in Pot 1 were not wilted because the water potential of the soil solution equals 0.
In Pot 3, the pressure potential in the root cells after being watered with 40% urea was lower than before the fertilizer treatment.
According to the picture, the plant on the left is likely lacking .... nutrients, such as .....
mobile / Fe
immobile / Fe
mobile / N
immobile / N
What causes apical dominance?
more cytokinin in the tips of branches than at the top of trees
more auxin in the tips of branches than at the top of trees
the high ratio of auxin to cytokinin near the shoot apex
the high ratio of cytokinin to auxin in the branch
What happens if a plant is laid horizontally?
Shoots bend upward, which is negative gravitropism, while roots bend downward, which is positive gravitropism.
Both shoots and roots bend downward, which is positive gravitropism.
Both shoots and roots bend upward, which is positive phototropism.
Shoots bend upward, which is positive phototropism, while roots bend downward, which is positive gravitropism.
What is the role of ethephon used in Experiment 11 to study effects of ethylene on seedling growth?
It can slowly release ethylene.
It can slowly inhibit ethylene action.
It can stimulate seed germination.
It can promote phototropism.
What is the phase of cell division?
Prophase
Metaphase
Anaphase
Telophase
What is the phase of cell division?
Prophase
Metaphase
Anaphase
Telophase
What is the phase of cell division?
Prophase
Metaphase
Anaphase
Telophase
What is the phase of cell division?
Metaphase
Metaphase I
Metaphase II
Anaphase
What is the phase of cell division?
Prophase I
Anaphase I
Telophase I
Telophase II
What is the phase of cell division?
Anaphase
Anaphase I
Anaphase II
Metaphase II
The number of chromosomes in a living organism's cell is 2n=20. What is the number of chromosomes in each daughter cell after mitotic cell division?
20
40
1
2
What is the pattern of inheritance of skin color?
Multiple alleles
Polygenes
Co-dominance
Incomplete dominance
Who is affected by Huntington’s disease?
Maternal grandfather
Maternal uncle
Maternal grandmother
Emma
Which of the followings is incorrect if the children have the genotype described in the table?
The blood group of the fifth child can be O.
The genotype of the father and mother can be IAIB and IAIB, respectively.
The genotype of the father and mother must not contain allele i
The genotype of the third child can be IBIB
