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    Grade 7 Revision Worksheet - 5

    Uploaded by

    Renee Disa
    This document contains a biology revision worksheet with questions about the circulatory system, respiration, and glucose transport. It asks the student to: 1) Identify blood vessels A, B, and C as an artery, capillary, and vein. It also asks about pulse and the functions of these vessels. 2) Complete a word equation for aerobic respiration and a table about breathing movements. 3) Complete the path that glucose takes from absorption to cell use. 4) Explain that students breathe quickly after a race to get oxygen to break down toxic substances produced by anaerobic respiration during exercise.

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    Download as PDF, TXT or read online from Scribd

    Grade 7 Revision Worksheet - 5

    Uploaded by

    Renee Disa
    791 views3 pages
    This document contains a biology revision worksheet with questions about the circulatory system, respiration, and glucose transport. It asks the student to: 1) Identify blood vessels A, B, and C as an artery, capillary, and vein. It also asks about pulse and the functions of these vessels. 2) Complete a word equation for aerobic respiration and a table about breathing movements. 3) Complete the path that glucose takes from absorption to cell use. 4) Explain that students breathe quickly after a race to get oxygen to break down toxic substances produced by anaerobic respiration during exercise.

    Original Description:

    Revision

    Original Title

    Grade 7 Revision worksheet - 5

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    © © All Rights Reserved

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    This document contains a biology revision worksheet with questions about the circulatory system, respiration, and glucose transport. It asks the student to: 1) Identify blood vessels A, B, and C as an artery, capillary, and vein. It also asks about pulse and the functions of these vessels. 2) Complete a word equation for aerobic respiration and a table about breathing movements. 3) Complete the path that glucose takes from absorption to cell use. 4) Explain that students breathe quickly after a race to get oxygen to break down toxic substances produced by anaerobic respiration during exercise.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    791 views3 pages

    Grade 7 Revision Worksheet - 5

    Uploaded by

    Renee Disa
    This document contains a biology revision worksheet with questions about the circulatory system, respiration, and glucose transport. It asks the student to: 1) Identify blood vessels A, B, and C as an artery, capillary, and vein. It also asks about pulse and the functions of these vessels. 2) Complete a word equation for aerobic respiration and a table about breathing movements. 3) Complete the path that glucose takes from absorption to cell use. 4) Explain that students breathe quickly after a race to get oxygen to break down toxic substances produced by anaerobic respiration during exercise.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 3

    Name: Grade: 7 Div: ______ Date: ___/___/_____

    ____________________________________

    Subject: Biology Topic: Revision

    1. a. Identify the blood vessels labelled A, B and C

    A B C

    A - ……………………………… artery
    B - ……………………………… capillary
    C- ……………………………… vein

    1(b) In which blood vessels the blood moves at high pressure by forming a pulse
    artery
    …………………………………………………………………………………… [1]

    1
    (c) What is the function of blood vessel labelled B
    Supplies oxygen and glucose to the cells and carries waste product from the cell
    ………………………………………………………………………………………………………

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

    (d) Name the blood vessel that supplies oxygenated blood to the heart

    Coronary artery

    ……………………………………………………………………………………………….. [1]

    (e) How is atheroma formed in the blood vessel names in 1(d)


    High fatty food such as cholesterol stick to lining of the blood vessel and it also deposits
    calcium ions
    ………………………………………………………………………………………………………

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

    2. (a) Write the word equation of aerobic respiration

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

    (b) Complete the table

    Breathing movement Inspiration Exspiration

    External intercostal muscles contract relax

    Diaphragm muscles contract relax

    Change in chest volume Increases decreases

    2
    3. Complete the path of how glucose passes from the place where it is absorbed to where it is
    used

    (a) Small intestine —> Blood _vessels_____ —> __right_____ side of the heart —>
    __left______ side of the heart —--> aorta —--> cells

    4. Why do students breathe quickly after a race?

    ………………………………………………………………………………………………………

    ………………………………………………………………………………………………………

    ………………………………………………………………………………………………………

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

    When a student runs a race, their body needs energy which cannot be provided by aerobic
    respiration as enough oxygen cannot be taken in so the body switches over to anaerobic
    respiration that takes place in the absence of oxygen which produces a toxic substance. Once
    the student stops the race, the student needs oxygen to break down the toxic substance
    produced during anaerobic respiration. So the students breathes quickly and takes deep
    breaths.

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