14.3. Hormones
A subsection of Biology, 0610, through 14. Coordination and response
Listing 10 of 96 questions
The endocrine system in mammals produces hormones. Define the term hormone. The responses of the human body to danger are coordinated by the nervous and endocrine systems. shows the sequence of events that occurs in response to a dangerous situation that is detected by the eyes. nerve impulses Key: P Q hormone State the tissue in the eye that converts light energy into nerve impulses. State the part of the eye that has the highest concentration of light-sensitive cells and gives the most detailed image. State the type of neurone that conducts impulses from the eye to the brain. State the nerve that contains these neurones that conduct impulses from the eye to the brain. Identify the organ labelled P. Identify the gland labelled Q. Complete Table 4.1 to describe the effects of the hormone released when a person is in a dangerous situation. Table 4.1 organ effect of the hormone heart liver lungs eyes Explain the advantages of coordinating the response to a dangerous situation using both the nervous system and the endocrine system. Plants also make hormones. State the name of one hormone made by plants. Some plant hormones are manufactured and applied to crops to alter aspects of plant growth. Describe how the synthetic plant hormone 2,4-D is used in agriculture.
0610_s18_qp_43
THEORY
2018
Paper 4, Variant 3
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A student wrote an incorrect definition of the term hormone. The student’s incorrect definition is shown in . A hormone is an electrical substance, produced by a gland and carried by the neurones, which alters the activity of one or more specific target organs. Identify the two incorrect words in the student’s definition. Table 6.1 shows the names of some hormones and the glands where they are secreted. Complete Table 6.1. Table 6.1 hormone gland adrenal insulin oestrogen testes shows the position of some of the organs and endocrine glands in the body. kidney Draw an X on to identify an adrenal gland. The list in shows some of the changes that occur in boys and girls during puberty. breasts grow hair grows in armpits pubic hair grows hips widen menstruation testes grow State two changes that occur in girls only from the list in . State one change that occurs in both boys and girls from the list in .
0610_s20_qp_32
THEORY
2020
Paper 3, Variant 2
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Questions Discovered
96