Bio – Half Book 2

1

What happens to an enzyme when it is exposed to very high temperatures?

A It becomes more active B It is permanently denatured due to disruption of bonds C It changes its specificity to a different substrate D It is converted into a substrate

2

Which measure of central tendency is the most frequent value in a data set?

A Mean B Median C Mode D Average

3

Which measure of central tendency is most appropriate for finding the most common shoe size in a class?

A Mean B Median C Mode D Average

4

What is biostatistics?

A The study of living organisms B The application of statistics to biological data C The study of chemicals in living things D The study of fossils

5

The sum of all values divided by the number of values is called the:

A Median B Mode C Mean D Range

6

Symplastic movement of water occurs:

A Along cell walls. B Through the cytoplasm via plasmodesmata. C Through the apoplast. D Outside the root.

7

Which of the following is an example of discrete biological data?

A Height of students B Weight of students C Number of petals on a flower D Blood pressure

8

What is the role of chlorophyll in photosynthesis?

A To absorb light energy B To fix carbon dioxide C To produce oxygen D To make ATP directly

9

Which micronutrient is essential for chlorophyll synthesis?

A Boron B Iron C Manganese D Zinc

10

How many phosphate groups are in an ATP molecule?

A One B Two C Three D Four

11

Which of these is NOT an artificial vegetative propagation method?

A Cutting B Grafting C Layering D Fragmentation

12

Which micronutrient is essential for the synthesis of chlorophyll in plants?

A Iron B Magnesium C Nitrogen D Phosphorus

13

What is the main driving force for the ascent of xylem sap?

A Root pressure B Transpirational pull C Capillary action D Active transport

14

What is the function of a coenzyme?

A To break down enzymes B To assist enzymes in catalyzing reactions C To serve as a substrate D To inhibit enzyme activity

15

Which of the following is an example of an intracellular enzyme?

A Amylase in saliva B Pepsin in the stomach C Catalase in liver cells D Trypsin in the small intestine

16

Which process involves the movement of molecules from an area of higher concentration to lower concentration without using energy?

A Active transport B Osmosis C Diffusion D Translocation

17

Which of the following is NOT a measure of central tendency?

A Mean B Median C Mode D Range

18

Which pigment is the main photosynthetic pigment?

A Chlorophyll-a B Chlorophyll-b C Carotenoid D Xanthophyll

19

Where does the Calvin cycle take place?

A Thylakoid membrane B Stroma C Cytoplasm D Mitochondrial matrix

20

In biostatistics, data collection is important because:

A It provides the raw information for analysis B It helps in drawing bar charts C It calculates the mean D It determines the mode

21

Which measure of central tendency is most affected by extreme values?

A Mean B Median C Mode D Range

22

Which of the following data sets has a mean of 5?

A 2, 4, 6, 8 B 1, 2, 3, 4, 5 C 3, 3, 5, 5 D 4, 5, 6, 7

23

For the data set: 5, 7, 7, 8, 10, what is the mode?

A 5 B 7 C 8 D 10

24

Which of the following is pollinated by water?

A Vallisneria B Rose C Maize D Sunflower

25

What does a bar chart use to represent data?

A Lines B Bars of equal width C Points D Slices