Biology Chapter 1

Question 1

Magnification

Answer 1

Magnification is when an object is looked at in closer detail. Magnification come from the root word magnify. You can use things such as a magnifying glass or a microscope to magnify things.

Question 2

Cell Wall

Answer 2

The Cell wall is the outer layer of a plant cell. It strengthens the cell and provides it support. It is made of cellulose which makes it ridged.

Question 3

Specialised Cell

Answer 3

Specialised Cells normally have a different structure and different things in it (e.g nucleus, chloroplasts ect) help it carry out it’s specialised job. Some examples of Specialised Cells are Red Blood Cell, White Blood Cell, Sperm Cell and an Egg Cell.

Question 4

Red Blood Cell Adaptations

Answer 4

Red Blood Cells help carry oxygen around the body. Unlike most other animal cells, it does not contain a nucleus. There are biconcave and very flexible so they can fit through narrow blood vessels.

Question 5

Resolution

Answer 5

Resolution is how well and how much detailed you can see through a microscope.

Question 6

Vacuole

Answer 6

The Vacuole contains a watery liquid called Cell Sap. It helps to keep the cell firm.

Question 7

Nerve Cell Adaptations

Answer 7

Nerve Cells carry electrical impulses around the body. The are long and thin and have connections at each end so they can connect with other nerve cells. This helps them to transmit messages around the body.

Question 8

Diffusion

Answer 8

Diffusion is when particles are in the air and move from a place of high concentration to a place of low concentration. For example, if you spray something it will travel from one side of the room to the other side of the room and eventually reach your nose so you can smell it.

Question 9

Organism

Answer 9

A living thing that is made up of at least 1 cell.

Question 10

Chloroplast

Answer 10

Inside the Chloroplasts is where photosynthesis takes place. It contains a green substance called chlorophyll which traps energy from the Sun.

Question 11

Nucleus

Answer 11

The Nucleus controls the cell and contains genetic material. Genetic information is needed to male new cells.

Question 12

Microscope

Answer 12

A Microscope is a scientific instrument which is used to look at things in closer and greater detail.

Question 13

Egg Cell Adaptations

Answer 13

An Egg Cell is a specialised cell which can reproduce when put together with a sperm cell.

Question 14

Rate Of Diffusion

Answer 14

Rate of Diffusion is the amount of time it take for particles to move from a place of high concentration to a place of low concentration.

Question 15

Cytoplasm

Answer 15

In the Cytoplasm, chemical reactions take place. The Cytoplasm is a “jelly-like” substance.

Question 16

Specimen

Answer 16

A Specimen is the object that you are going to use in an experiment.

Question 17

Sperm Cell Adaptations

Answer 17

Sperm Cells have a streamlined head and a long tail to help them to “swim” to the egg cell. They contain lots of mitochondria to transfer energy. They carry male genetic material.

Question 18

Binary Fission

Answer 18

Binary fission is when cells multiply themselves and divide themselves in half to create another cell that is just the same.

Question 19

Cell Membrane

Answer 19

The cell membrane is the barrier that is around the cell. The controls what goes in and out of it.

Question 20

Slide

Answer 20

A Slide is a small piece of glass that you put something small on and then place it under a microscope to take a closer look at it.

Question 21

Root Hair Cell Adaptation

Answer 21

Root Hair Cells absorb water and nutrients from the soil. They also have no chloroplasts as there is no light underground. Therefore, they do not carry out photosynthesis.

Question 22

Mitochondria

Answer 22

In Mitochondria respiration takes place. Respiration is the reaction that transfers oxygen into energy.

Question 23

Cell

Answer 23

A cell is and organism that is microscopic and functions in order to either keep itself alive of the thing that it’s living in alive.

Question 24

MRS GREN

Answer 24

M=Movement
R=Respiration
S=Sensitivity

G=Growth
R=Reproduction
E=Excretion
N=Nutrition

Question 25

Unicellular Organisms

Answer 25

A Unicellular Organism is a cell that survives on it’s own. Some examples of Unicellular Organisms are Amoeba, Euglena and Bacteria.

Question 26

Multicellular

Answer 26

If something is Multicellular, that means it contains more than 1 cell. For example, plants are multicellular, animals are multicellular and even us humans are multicellular!