Animal Cell Specialisation

Question 1

are most animal cells specialised or unspecialised?

Answer 1

most animal cells are specialised

Question 2

what does it mean for a plant cell to be specialised?

Answer 2

this means that the have adaptations to help them carry out a particular function

Question 3

what do scientists/we call it when a cell becomes specialised?

Answer 3

cell differentiation/ a cell has differentiated

Question 4

what is the function of a sperm cell?

Answer 4

to fertilaise/ fertilisation

to join with an ovum(egg cell)

Question 5

what happens to the DNA of an ovum and a sperm cell during fertillisation

Answer 5

the genetic information of the ovum and the sperm cell combine.

Question 6

where do sperm cells contain their genetic material?

Answer 6

in the nucleus

Question 7

whats special about the sperm cells genetic information?

Answer 7

sperm cells only contain half of the genetic material of a normal adult cell.

Question 8

what features do sperm cells have?

Answer 8

a long tail
mitochondria
nucleus 
tail
enzymes

Question 9

2 ways in which sperm cells are specialised to swim to the ovum(egg cell) better

Answer 9

The long tail allows them to swim to the ovum easier, they are also streamlined to make this easier

Question 10

where are enzymes found in the sperm cell ?

Answer 10

they are found in the acrosome

Question 11

what is the function of the mitochondria in a sperm cell

Answer 11

provides the energy needed for swimming

Question 12

where is the mitochondria found in a sperm cell

Answer 12

the mitochondria in a sperm cell is found in the FLAGELLUM

Question 13

what is the function of the enzymes in a sperm cell

Answer 13

to digest their way through the ovum (egg cell)

Question 14

what is the function of a nerve cell?

Answer 14

The job of a nerve cell is to send electrical impulses around the body

Question 15

Name the 4 features of a nerve cell

Answer 15

axon
myelin
dendrites
synapses(junctions)

Question 16

what is the function of the axon?

Answer 16

the axon carries the electrical impulses from one part of the body to another

Question 17

where is the myelin found?

what is the function of the myelin?

Answer 17

the myelin insulates the axon and helps speed up the transmissions of nerve impulses

Question 18

What are synapses?

where are they found?

Answer 18

Synapses are found on the end of an axon

Synapses are junctions which allow the impulse to pass from one nerve cell to another

Question 19

what are dendrites and what is their function?

Answer 19

dendrites are tree-like features that increase the surface area making it easier to connect with other nerve cells

Question 20

what is the key feature/ability of muscle cells

Answer 20

they can contract (get shorter)

Question 21

how do/can muscle cells contract?

Answer 21

they contain protein fibres which can change their length

Question 22

what do the protein fibres in muscle cells do?

Answer 22

help them change their length

Question 23

what happens to the protein fibres when muscle cells contract?

Answer 23

these protein fibres shorten, decreasing the length of the cell.

Question 24

where are mitochondria found in a muscle cell

Answer 24

within the cell, around the nucleus

Question 25

why do muscle cells packed full of mitochondria?

Answer 25

to provide energy for muscle contraction

Question 26

muscle cells working together means that..

Answer 26

muscle tissue is formed

Question 27

how is muscle tissue formed?

Answer 27

muscle cells work together