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Science Biology Year 9 2024 > Revision Quiz Questions #1 > Flashcards

Revision Quiz Questions #1 Flashcards

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1
Q

Sensory Organ: Eye
Sense:
Stimuli:
Sensory Receptor:

Q1

A

Sense: sight/vision
Stimuli: Electromagnetical stimuli, form of visible light
Sensory Receptor: Photoreceptor

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2
Q

Sensory Organ: Ears
Sense:
Stimuli:
Sensory Receptor:

Q1

A

Sense: hearing
Stimuli: Mechanical stimuli, form of sound waves
Sensory Receptor: Mechanoreceptor

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3
Q

Sensory Organ: Skin
Sense:
Stimuli:
Sensory Receptor:

Q1

A

Sense: Touch
Stimuli: Mecanical stimuli, form of touch. Temperature variation. Pain (damage to cells)
Sensory Receptor:Mechanoreceptors, Thermoreceptors, Pain receptors

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4
Q

Sensory Organ: Tongue
Sense:
Stimuli:
Sensory Receptor:

Q1

A

Sense: Taste
Stimuli: Chemical stimuli, form of molecules in food
Sensory Receptor: Chemoreceptors

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5
Q

Sensory Organ: Nose
Sense:
Stimuli:
Sensory Receptor:

Q1

A

Sense: Smell
Stimuli: Chemical stimuli, form of particles in the air
Sensory Receptor: Chemoreceptors

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6
Q

What is the difference between a neuron and a nerve?

Q2

A

Neurons are responsible for transmitting electrical signals. Nerves are not individual, and are held together by connective tissues.

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7
Q

What is the function of the cell body

Q3

A

brings together incoming signals and generates outgoing signals

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8
Q

What is the function of the Dentrites

Q3

A

Recieve incoming information from other neurons or sensory receptors

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9
Q

electical impulses

What is the function of the axon

Q3

A

It transmits electrical impulses away from the cell body to the axon terminal

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10
Q

nerve impulses

What is the function of the myelin sheath

Q3

A

Speeds up the transmission of nerve inpulses

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11
Q

What is the function of the axon terminals

Q3

A

They release neurontransmitters, communicating with other neurons or target cells at the synapse

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12
Q

What are the three types of Neurons

Q5

A
  1. Sensory neurons
  2. Motor neurons
  3. Interneurons (relay neurons)
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13
Q

What is the function of sensory neurons

Q5

A

Detect sensory stimuli and transmits signals to the CNS for processing

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14
Q

What is the function of motor neurons

Q5

A

Sends signals from the CNS to muscles or glands.

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15
Q

What is the function of interneurons (relay neurons)

Q5

A

Only found in the CNS. Allow for communication between sensory and motor neurons

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16
Q

Remember how to label a synapse diagram

Q6

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17
Q

Where does the electrical impulse start?

what is the messenger called?

How is a nerve impulse is transmitted from the presynpatic neuron to the postsynaptic neuron

Q7

A

Electrical impulse travels along the axon of the first neuron (pre-synaptic neuron). When the electrical impulse reaches the axon terminals, a chemical messenger called neurontransmitters are realesed. After a number of steps, the binding of the neurontransmitters to the receptors stimulates he second neuron to be transmitted along its axon.

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18
Q

Label the major regions of the brain

Q8

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19
Q

What is the function of the Cerebrum

Q8

A
  • Thinking
  • preciving sensory information
  • producing and understanding language
  • controlling volentary movements
20
Q

What is the function of the Cerebellum

Q8

A

Ensures smooth, balanced movements of muscles and maintains posture and balance

21
Q

What is the function of the Brain stem

Q8

A

Essential for basic life functions like breathing, heartbeat, blood pressure regulation. It is also a comunication centre for the Brain and the rest of the body

22
Q

What is the function of the CNS

Q9

A

processes sensory information, initiates responses, and coordinates bodily functions

23
Q

What is the function of the PNS

Q9

A

connects the CNS to the rest of the body.

24
Q

What is the function of the Autonomic NS

Q10

A

regulates involuntary functions like heart rate, digestion, and glandular secretions.

25
Q

What is the function of the Somatic NS

Q10

A

controls voluntary muscle movements and sensory perception.

26
Q

What is the function of the Sympathatic

Q11

A

Controls the body’s ability to react to stressful/dangerous situations – fight or flight response. Dilate pupils, inhibit digestion, increase heartbeat etc

27
Q

What is the function of the Parasympathatic

A

Controls the body’s ability to relax in calm situations – rest and digest response. Constrict pupils, stimulate digestive activity, decrease heartbeat etc.

28
Q

Label the divisions of the Nervous System

Q12

29
Q

What is a reflex Arc

Q13

A

a nerve pathay that enables fast responses to stimuli. The body’s immediate defense mechanism, not requiring conscious brain processing

30
Q

what are the five key components in a reflex arc?

Q13

A
  1. sensory receptor
  2. sensory neuron
  3. integration center (spinal cord and interneurons)
  4. motor neuron
  5. effector (muscles or glands).
31
Q

What is a basic stimulus response answer

Q14

A

Stimulus –> Receptor –> Control Centre –> Effector –> Response

32
Q

What is the function of the endocrine system

A

A network of glands and organs that produce hormones. These hormones travel through the bloodstream to target tissues and organs, where they control functions such as metabolism, growth, development, and mood, maintaining overall body homeostasis.

33
Q

What is the difference between endocrine glands and exocrine glands

A

Endocrine produces hormones into the bloodstream without ducts, exocrine produces substances through ducts onto the body surfaces. Exocrine is not a part of the endocrine system

34
Q

Complete this table

35
Q

How do the endocrine and nervous systems differ in their responses to stimuli? Refer to the speed, specificity, and duration of the response
Speed:
Specificity:
Duration:

A

Nervous system:
Speed – swift, rapid responses.
Specificity – high level of specificity (very specific responses).
Duration – quick, short-lived responses (does not last very long).
Endocrine:
Speed – gradual, slower responses.
Specificity – non-specific, broad, more general, widespread response that can influence multiple target cells, tissues, and organs.
Duration – long-lasting, prolonged responses.

36
Q

Label this diagram

Plants

37
Q

Distinguish between self-pollination and cross-pollination.

A

Self-polinators = pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
Cross-polinator = transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species

38
Q

Describe the method of fragmentation by which plants may reproduce asexually

A

The parent plant produces seeds without fertilization. new plants growing from small parts of a parent plant

39
Q

What is the function of the overies

A

Releases an egg every month

40
Q

What is the function of the fallopian tubes

A

transports eggs from the ovary to the uterus.

41
Q

What is the function of the uterus

A

houses and nourishes a fertilised egg and developing foetus

42
Q

What is the function of the vagina

A

a tube of muscles connecting the cervix to the outside of the body

43
Q

What is the function of the testes

A

produces immature sperm cells,

44
Q

What is the function of the vas deferens

A

transports mature sperm to the penis. Also called the “sperm duct”.

45
Q

What is the function of the penis

A

to urinate and for sex and reproduction

46
Q

Label this Female Reproductice System diagram

47
Q

Label this male Reproductice System diagram

Science Biology Year 9 2024 (4 decks)

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