Cambridge IGCSE Biology - 0610 - Core Paper 3 2017 Winter Zone 2

The boxes on the left contain possible effects of using some drugs.
The boxes on the right contain the names of some drugs.
Draw straight lines to link the effect with the drug or drugs responsible.
An example has been done for you.
Draw five lines.

Fig. 2.1 shows a section through a flower.

(a) State the names of structures A, B, C and D on Fig. 2.1.
Write your answers on Fig. 2.1. [4]

(b) The flower in Fig. 2.1 is pollinated by insects.
Complete Table 2.1 by describing three ways in which a wind-pollinated flower is different to the flower in Fig. 2.1.
Give a reason for each difference.
An example has been done for you.

Table 2.1

[Table_1]

Choose a word or a phrase from the list to complete the sentences about birth control.
Each word or phrase may be used once, more than once or not at all.
chemical, cervix, femidom, IUD, mechanical, mucus, sperm, sperm ducts, surgical, ureter, uterus, vagina

One barrier method of birth control uses a diaphragm.
Another barrier method uses a .............................................. . This is placed inside the .............................................. of the female to catch the .............................................. .
A vasectomy is a .............................................. method of sterilising a man. It involves cutting the .............................................. .
Taking a contraceptive pill is an example of a .............................................. method of birth control.

(a) Students investigated the effect of 'Flower Food' on cut flowers.
Ten flowers of the same species were placed into a container of water.
Ten flowers of the same species were placed into a container of water and Flower Food.
The students recorded the number of days until the first petal fell off each flower.
The results are shown in Fig. 4.1.
[Image_1: Fig. 4.1]
(i) Use Fig. 4.1 to state the average time taken for one petal to fall off the flowers placed in water and Flower Food.
.................................................... days [1]
(ii) State one conclusion for the results shown in Fig. 4.1.
.....................................................................................................................................................................................
..................................................................................................................................................................................... [1]

(b) Flower Food contains the following chemicals:
malic acid
glucose
fungicide
bactericide
(i) Malic acid helps water to pass up the stem to the flower.
State the name of the tissue in the stem that transports water.
......................................................................................................................................................... [1]
(ii) Explain how the glucose in the Flower Food is used by the flower.
..................................................................................................................................................................................
..................................................................................................................................................................................
.................................................................................................................................................................................. [2]
(iii) Bactericides and fungicides kill decomposers.
Define the term decomposer.
..................................................................................................................................................................................
..................................................................................................................................................................................
.................................................................................................................................................................................. [2]

(a) State the names of R, S, T and V on Fig. 5.1. Write your answers on Fig. 5.1. [4]


(b) The main function of leaves is to produce carbohydrates. Describe how plants produce carbohydrates. ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... [4]

(a) Fig. 6.1 shows six insects.
Use the key to identify the insects in Fig. 6.1.
Write the letter for each insect in the key.
Key

(a) (i) Use the information from Fig. 7.1 to complete Table 7.1.



Table 7.1

(a) (i) State the name of the organ that produces urea.
..................................................................................................................................................... [1]

(ii) Urea is formed from an excess of one particular component of food.
State the name of this component.
..................................................................................................................................................... [1]

(b) Fig. 8.1 shows the system that excretes urea.

Fig. 8.1
Identify the structures $M$, $N$ and $P$ on Fig. 8.1.
State a function for each structure.
Write your answers in Table 8.1.
An example has been done for you.

Table 8.1
[Table_1]
letter on Fig. 8.1 | name of structure | function of structure
$L$ | renal artery | transports blood to the kidney
$M$ |
$N$ |
$P$ |
[6]

(c) Urea is a component of urine.
State the name of two other components of urine.
1 .....................................................................................................................................................
2 ..................................................................................................................................................... [2]

(d) Kidney cells produce carbon dioxide.
(i) State the name of the organ which excretes carbon dioxide.
......................................................................................................................... [1]

(ii) State how carbon dioxide is transported around the body.
......................................................................................................................... [1]

Alcohol is a drug.

(a) Excessive consumption of alcohol increases the risk of having an accident.

State two effects of alcohol on the body that increase the risk of having an accident.

1 ...............................................................................................................................
.................................................................................................................................
2 ...............................................................................................................................
................................................................................................................................. [2]

!(#)

(b) Describe three trends shown in Fig. 9.1.

.................................................................................................................................
.................................................................................................................................
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.................................................................................................................................
.................................................................................................................................
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................................................................................................................................. [3]

(c) (i) State the number of male alcohol-related deaths in 1998.

......................................... per 100 000 population [1]

(ii) The city has a population of 700 000. There were 9 female per 100 000 population alcohol-related deaths in 2012.
Calculate the total number of female alcohol-related deaths in the city in 2012.
Show your working.

...................................................... females [2]

(iii) Predict what may have happened to the number of alcohol-related deaths after 2012.
Give two reasons for your answer.

.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
................................................................................................................................. [2]

(a) (i) State the name of the hormone that is released into the blood stream in a frightening situation.
............................................................................................................... [1]

(ii) State \textit{two} effects that this hormone will have on the body.

1 .............................................................................................................
................................................................................................................
2 .............................................................................................................
................................................................................................................ [2]