As Biology (New 2008 Specification) Revision. (Module 1, Cells And Transport)

1. In ORDER:
State the 3rd phase of Mitosis. [1 Mark.]

You will need to spell it correctly.

Remember that Interphase comes before Mitosis, and that Cytokinesis comes afterwards. Usually, a nice rhyme helps you remember. Mine was rude... but one that isn't might be Politicians Make Awful Tea. Make one up for yourself: It will help you remember.

Explanation

Remember that Interphase comes before Mitosis, and that Cytokinesis comes afterwards. Usually, a nice rhyme helps you remember. Mine was rude... but one that isn't might be Politicians Make Awful Tea. Make one up for yourself: It will help you remember.

Submit

2. Fill In The Blank:
The Heart has 4 chambers: The left and right ______, and the left and right _______. [2 Marks.]

Write both answers, one after the other, with an and in the middle.

Remember! The left is seen on the right, and the right is seen on the left: as it is seen as if LOOKING at the heart from the front of someone. It is the person you're looking at's left and right.

Explanation

Remember! The left is seen on the right, and the right is seen on the left: as it is seen as if LOOKING at the heart from the front of someone. It is the person you're looking at's left and right.

Submit

3. A _____ is used to measure the breathing rates of an individual. [1 Mark.]

Remember to spell it correctly.

A spirometer is a device used to measure the breathing rates of an individual. It measures the volume of air inhaled and exhaled by the lungs. By analyzing the data collected by a spirometer, healthcare professionals can assess lung function and diagnose respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). The device is commonly used in pulmonary function tests to evaluate lung capacity and efficiency.

Explanation

A spirometer is a device used to measure the breathing rates of an individual. It measures the volume of air inhaled and exhaled by the lungs. By analyzing the data collected by a spirometer, healthcare professionals can assess lung function and diagnose respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). The device is commonly used in pulmonary function tests to evaluate lung capacity and efficiency.

Submit

4. Answer this question:

A palisade cell is seen under a microscope. When measured under the microscope, which is Magnification x100, the cell is 80mm long. What is it's actual size? Give your answer in mm. [2 Marks, N.B One mark in the exam would be for correct workings.]

Hint: There is a specific formula needed for this question, which you must know.

The formula you need is Magnification = percieved size/actual size. This formula can be re-arranged to give you an answer you need.

Explanation

The formula you need is Magnification = percieved size/actual size. This formula can be re-arranged to give you an answer you need.

Submit

5. Which tissue in a plant transports ions and minerals - such as glucose - to the roots? [1 Mark.]

Xylem Vessel

Phloem Tubes

Stem Cells

The Epithelium of the Cortex

One not mentioned

Phloem Tubes (made almost entirely of organelle-less sieve tubes) use Active Transport to transport minerals created by the leaves - usually glucose - to the roots where they are needed to keep the root healthy; and alive.

Explanation

Phloem Tubes (made almost entirely of organelle-less sieve tubes) use Active Transport to transport minerals created by the leaves - usually glucose - to the roots where they are needed to keep the root healthy; and alive.

6. What instrument is used to measure gas exchange in a plant? [1 Mark.]

A Thermometer

A Botometer

A FIlimeter

A Potometer

Something else, not mentioned.

A potometer is used to measure the amount of oxygen released by a plant, via photosynthesis. Alot of care is needed to set up the equipment. Alot of variables - such as temperature and windspeed - can be changed to test if the gas released is altered in anyway.

Explanation

A potometer is used to measure the amount of oxygen released by a plant, via photosynthesis. Alot of care is needed to set up the equipment. Alot of variables - such as temperature and windspeed - can be changed to test if the gas released is altered in anyway.

7. Which of these is described by this: [1 Mark.]

This organelle is covered in some sort of round, hard substance. Vesicles can be seen leaving this organelle with a protein structure inside. It is close to the Nucleus.

Nuclear Envolope

Smooth Endoplasmic Reticulum (SER)

Ribosomes

Centrioles

Rough Endoplasmic Reticulum (RER)

Remember: RER is covered in Ribosomes, SER isn't.

Explanation

Remember: RER is covered in Ribosomes, SER isn't.