Enzymes and digestion
Enzymes and digestion
Let´s start to study reproduction.
Living organisms reproduce sexualy or asexualy. Therefore, we say that there are two types of reproduction.
Humans reproduce sexualy.
2. Watch this video to learn about the MALE REPRODUCTIVE SYSTEM.
3. Act: Summarize the functions of each of the organs which are part of the male reproductive system. Take a look at THESE SLIDES !
4. State the components and the function of semen.
5. Make a large labelled drawing of a sperm cell and state how the structure is adapted to its function. (Do not add a picture).
Read the article and explain the relationship between heat loss and animal size.
April 26th, 2018
Dr. Marcelo Cetkovich from INECO Foundation explains the effect of Paco in young children.
Sex hormones are responsible of the most dramatic changes that occur in the body. They control puberty, egg and sperm production, pregnancy, birth and lactation.
– FSH, LH, oestrogen, progesterone, oxytocine, Hcg, prolactine and testosterone.
5. The chart shows the ages at which the changes associated with puberty take place in boys and girls. Answer questions a, b, c, d and e.
(a) What is the most common age at which boys undergo the changes of puberty?
(b) If a girl had not started menstruation by the age of 15, would this be cause for concern?
(c) Which two features of puberty show the greatest range in the times at which they occur.
(d) Is it unusual for a girl of 9 years to start her menstrual periods?
(e) On average, is it boys or girls who first show the onset of puberty?
Enzymes are proteins that act as biological catalysts.
Let´s learn more about enzymes. Watch the video!
Make sure to understand the meaning of the following key words:
Why temperature control matters?
Click HERE ! Read the information and play all the animations.
ENZYMES ARE SPECIFIC. Take a look at the slides below and build a comparison table about protease, lipase, catalase. amylase, maltase and carbohydrase. Include three columns: enzyme, substrate and products.
Read page 5 from HERE.
For each example, name the structures involved:
stimulis __ receptor __coordinator __effector __ response
? ? ? ? ?
STRUCTURE OF THE EYE
Study the structure and functions of the human eye HERE, and complete pages 9 and 10 from the booklet.
HOW WE SEE COLORS
Booklet Act: COMPLETE questions 4 c and d on page 10.
ACCOMMODATION OR FOCUSING
PROBLEMS WITH VISION?
Let´s discuss about them HERE!
Connections between the nervous system and the eye as a sense organ.
Booklet act: Answer question 5 on page 10.
Let´s start a new topic!
All mammals have a CENTRAL NERVOUS SYSTEM and a PERIPHERAL NERVOUS SYSTEM. The CNS is made up of the brain and the spinal cord. The peripheral nervous system is made up of nerves and receptores.
The NEURONES are special cells which coordinate the messages travelling through the nervous system.
2. TYPES OF NEURONES: Read “overiew of neurone structure and function from HERE .
Let´s continue studying hormones…
Act: a- Use bullet points to summarise the effects of adrenaline.
b- Describe 3 situations in which adrenaline is secreted. Post a picture to show the examples.
2. Draw a flow chart to show the effects of ADH:
– when there is TOO LITTLE WATER in the body.
– when there is MUCH WATER in the body.
3- Solve the quiz from this webpage. Take a screenshot and post it.
Good luck! 🙂