Activate 1 - Chapter B1 - Cells

Question 1

Resolution

Answer 1

It is when you record how did the thing moves or does it

Question 2

Organism

Answer 2

An organism is a group of systems that helps the body

Question 3

Nucleus

Answer 3

It controls the cell and contains genetic material

Question 4

Cytoplasm

Answer 4

This is a ‘jelly-like’ substance where the chemical reaction in a cell takes place.

Question 5

Cell Membrane

Answer 5

This is a barrier around the cell. It controls what can come in and out of the cell.

Question 6

Mitochondria

Answer 6

This is where respiration happens. Respirations is a reaction that transfers energy for the organisms.

Question 7

MRS GREN

Answer 7

It is how to remember the features of living organisms: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition.

Question 8

Cell Wall

Answer 8

This strengthens the cell and provides support. It is made of a tough fibre called cellulose, which makes the wall rigid.

Question 9

Vacuole

Answer 9

This contains a watery liquid called sep. It keeps the cell firm.

Question 10

Chloroplast

Answer 10

This is where photosynthesis happens. Chloroplast contain a green substance called chlorophyll, which traps energy transferred from the sun.

Question 11

Microscope

Answer 11

A microscope is an apparatus that you look through and you can see something inside a thin layer.

Question 12

Specimen

Answer 12

It is the object that you will look through the microscope.

Question 13

Slide

Answer 13

A slide is where you place the object after when you done 3 drops of iodine.

Question 14

Cells

Answer 14

Animals and Plants are made out of cells. Cells form the basic “building blocks” for living things. Some cells have specialised functions.

Question 15

Unicellular Organisms

Answer 15

A unicellular organism is an organism that is made up of just one cell. It is not a plant or an animal, as these are made up of lots of cells.

Question 16

Specialised Cell

Answer 16

A specialised cell is a cell that is specialised to do a job in the body.

Question 17

Nerve Cell Adaptations

Answer 17

They are long and thin and have connections at each end where they can join to other nerve cells. This allows them to transmit messages around the body.

Question 18

Egg Cell Adaptations

Answer 18

To join with male cell, and then to provide food for the new cell that’s been formed.

Question 19

Sperm Cell Adaptations

Answer 19

Sperm cells carry male genetic material. They have a streamlined head and a long tail. This allows the cell to move through a liquid. They contain lots other mitochondria to transfer energy. This allows the tail to ‘swim’. When the sperm cell meets an egg cell, the head of the sperm burrows into the egg.

Question 20

Root Hair Cell Adaptation

Answer 20

Root hair cells absorbs water and nutrients from soil. The root hair creates a large surface area for absorbing water and nutrients. They have no chloroplasts as there is no light underground, so these cells do not carry out photosynthesis.

Question 21

Multicellular

Answer 21

Multicellular are cells that there is more than 1 cell.

Question 22

Red Blood Cell Adaptations

Answer 22

Red blood cells transports oxygen around the body. They contain haemoglobin, a red pigment that joins to oxygen. Unlike most animal cells they have no nucleus. They also have a disc-like shape. This increases their surface area for carrying oxygen

Question 23

Diffusion

Answer 23

Diffusion is the process by which substances move down a concentration gradient, from an area of high concentration to an area of low concentration. Diffusion happens in living systems, for example, it explains the movement of carbon dioxide in leaves.

Question 24

Rate of Diffusion

Answer 24

At high temperatures, particles are moving more quickly. Perfume particles leaving warm skin travel faster than perfume particles leaving a cold bottle.

Question 25

Binary Fission

Answer 25

Bacteria Reproduction. Bacteria reproduce by binary fission. This means that one cell splits into two new cells.

Question 26

Concentration

Answer 26

A measure of the number of a substance in a given volume.

Question 27

Flagella/Flagellum

Answer 27

A tail-like structure that allows euglenas to move.