Reproduction question

Q1

Q2

Seminal vesicle produces some of the liquid found in semen 

Ovary produces gametes

Scrotum keeps the slightly cooler than the rest of the body.

Testis produces some of the liquid found in the semen 

Prostate gland produces some of the liquid found in the semen 

Uterus where the baby develops 

Cervix the passageway between the vagina and the uterus 

Fallopian tube where the baby develops 

Q3

A )both produce sex cells neede for fertilization.

B) tubes which transport the sex cells.

C) both become sexually aroused and enlarge in size 

D) where the sperm cells come through 

Q4 

Because this can reduce the amount of sperm produced 

Q5 

To check if they have 

Male reproduction system

Sex cells

Male and female versions. Required for sexual reproduction"

Males - sperm

Female - eggs , ova

Sex cells contain half the number of chromosomes as a body cell has, so when 2 sex cells join together a complete set of genetic materiel is obtained.

In humans 23 chromosomes come from dad

23 chromosomes come from mum.

Sex of offspring is determined by the male

Female xx

Male xy

Reproduction

Q1 

Asexual reproduction occurs when you don't have sex

Sexual reproduction occurs when you have sex with the same species.

Q2

Drones 

Q3

It involves the offspring initially forming as a growth on the parent. When  the bud is capable of catching its own food it breaks away and becomes an dependant animal.

The adult, or parent, worm breaks up into several pieces, each of which develops into an adult worm over time. Each offspring is identical to the parent worm.

Q4

1. By what means do each of the following reproduce? 

   (a) Jellyfish

   Budding
   (b) Malaria parasites

   Fission
   (c) Streptococcus bacteria 

   Fission 

   
   

   Q5

   1. (a) Describe parthenogenesis

      In parthenogenesis, a female produces an egg that develops unfertilised by sperm. 

       (b) Does this process involve sexual or asexual

      No it produces asexually 

      Q7

      Outline what advantages parthenogenesis might offer honeybees when there is an abundance of food.

      
      

Seeing colour

Q1 Copy the table below and record the possible combinations of primary colours and the resulting secondary colours observed on the screen. 

Q2 Predict what will happen if you mix the three secondary colours in equal amounts. 

The colours will mix together and form white.

Q3 Was your prediction correct? If not, suggest why it was not correct. 

Yes,

Yes it was because the 3 main colours 

Optical fibres

What is an optical fibre, how does light travel down the fibre.

A thin glass which light can travel through. The light bounce off the glass and travels through.

How are optical fibres used in endoscope.

According to "How stuff "works endoscopes have two sets of fibers: an outer ring of incoherent fibers that supplies the light, and an inner coherent bundle that transmits the image.

What benefits do endoscopes provide society

They provide less scaring and a new way to observe the body without cutting it open.

Outline the use of fibre optics in telecommunications 

According to How stuff works computer and electronics the fibre optics are coated in a mirror reflecting metal and when light shines in send that image with the light along the thread.

Describe positive and negative impacts of the use of optical fibres in communications.

Positive impacts being that communications speed will be improved and new medical research will benefit the community. 

Negative impacts such as land will have to dug up and construction around suburbs and buildings will need to take place. 

Bibliography 

How stuff works 

A discovery company 

http://computer.howstuffworks.com/fiber-optics-info.htm

Making colour

Red, blue and green are known as the primary colours as they mix together to make other colours.

Cyan- blue + green

Magenta - red + blue 

Yellow - red + green.

Q1 identify the two parts of the eye responsible for focusing light. 

Lens and the cornea 

Q2 identify whether a short-sighted person has trouble getting a sharp image of distant or near objects.

They have trouble seeing images close up.

Q3 When the eye changes focus from a distant to a near object, explain whether the lens of the eye becomes thicker or thinner. Use a diagram to support your answer.

Q4 Explain how the lens changes shape to accommodate objects of different distances.

The aqueous tumor forms different shapes as it spreads to allow more light in.

Q5

Blue , red and green

Q6Explain how the eye regulates how much light enters it.

The pupil opens and close allowing less light or more light to enter.

Q7Describe how you can demonstrate that light is actually made up of a mixture of colours.

 

 

Colour

The light from the sun is referred to as a white light as it is made up of a mixture of the 7 colours which can be seen in a rainbow. Each colour has a different wavelength. You can also see the different colours when the light is refracted by glass, a prism or oil. Because the colour is bent slightly different angle.to see a green colour the green light is reflected back into our eyes. All the other colour light is absorbed. To see a white object, all colours are reflected back into our eyes. To see black, no light is reflected back into our eyes.

Filters made up of coloured plastic can also change the colour of the light. The colour of the filter tells you what colour of light is allowed to pass through.