Which hormone lowers blood sugar levels when they are too high?

What type of molecule is the hormone insulin made from?

Name the disease condition where a person's blood glucose level is not properly controlled.

True or false? People with type 1 diabetes need to give careful attention to their diet and exercise levels.

Type 1 diabetes can be controlled by injecting... what?

True or false? Thyroxine prepares the body for "fight or flight".

The hormone glucagon causes __________ to be converted into glucose. What is the missing word?

Look at the diagram. It shows the mechanism used to control blood glucose. What word completes gap (iii)?

What is the name of the human male gamete?

What is the name of the human female gamete?

What type of reproduction involves the fusion of male and female gametes?

In sexual reproduction, how many parents are needed?

In asexual reproduction, how many parents are needed?

How many pairs of chromosomes are found in human body cells?

True or false? In asexual reproduction a disadvantage is that undesirable characteristics are passed on.

Which type of reproduction produces variation in the offspring?

True or false? One advantage of asexual reproduction is that it increases variation within a species.

During meiosis, sperm cells are produced that carry X or Y sex chromosomes. What percentage of sperm cells carry a Y chromosome?

Which diagram shows meiosis?

Which diagram shows mitosis?

What name is given to different forms of a gene?

True or false? In humans, males have XY chromosomes and females have XX.

What name is given to the condition where a person has extra fingers and/or toes?

Is the polydactyly allele dominant or recessive?

Can cystic fibrosis be inherited from one parent?

Is it possible to have the cystic fibrosis gene and not have the disorder?

Is it possible to have the polydactyly gene and not have the disorder?

A plant has one red flower allele and one white flower allele. Its flowers are red. What word is used to describe the white flower allele?

A cat has an allele for ginger fur, yet its fur is black. What word would you use to describe the allele for ginger fur?

What name is given to an allele which controls the development of characteristics only if the dominant allele is not present?

A dog breeder has a brown-haired dog (Bb) and a white-haired dog (bb). If she breeds these dogs, and the mother has a litter of 8 pups, how many should have white fur?

A farmer crossed a yellow maize plant (Yy) with another yellow maize plant (YY). He planted 200 seeds from this cross. How many of the plants would be yellow?

The ability to roll your tongue is controlled by a gene for which there are two alleles. R is the dominant roller allele and r is the recessive non-roller allele. The diagram shows a family tree of whether the individuals are rollers or non-rollers. What is the genotype of person K?

The ability to roll your tongue is controlled by a gene for which there are two alleles. R is the dominant roller allele and r is the recessive non-roller allele. The diagram shows a family tree of whether the individuals are rollers or non-rollers. What is the probability of person J and person K having another child that is a non-roller?

The ability to roll your tongue is controlled by a gene for which there are two alleles. R is the dominant roller allele and r is the recessive non-roller allele. The diagram shows a family tree of whether the individuals are rollers or non-rollers. The birth of which person proves that the non-roller allele is indeed recessive? Give the person's letter from the diagram. There is more than one possible answer, but give only one.

The ability to taste PTC is controlled by a single pair of genes. People with the dominant allele (T) can taste PTC, but there is also a recessive (t) non-taster allele. The diagram shows a family tree in respect of whether the individuals are tasters (white) or non-tasters (blue). What is the genotype of person C?

True or false? Crop plants can be genetically modified to make them resistant to herbicides.

Which type of organism has been successfully modified using genetic engineering in order to produce large quantities of human insulin?

The 7 stages involved in the genetic engineering of bacteria to produce human insulin are shown below. They have been mixed up. Give the number of the third stage in this process. Make sure to read through all 7 stages carefully.

Look at the diagram which shows a useful human gene being transferred into a bacterial cell. What is the missing word in this sentence? The human DNA has been shown using the colour __________.

Grouping organisms into categories such as plants, animals and microorganisms according to their similarities and differences is known as __________. What one word completes the sentence?

How many names does each organism have in the binomial system?

Which name comes first in the binomial system?

As evidence of internal structures became more developed because of improvements in the technology of __________, new models of classification were proposed. What word completes the sentence?

Who developed the three-domain system of classification?

The diagram shows the seven levels used to classify living organisms. Name level C.

What kingdom does Homo sapiens belong to?

True or false? The best we can hope for is the slowing down of antibiotic-resistant bacteria.

True or false? A preserved footprint in rock is not a fossil because it is not a part of an animal.

True or false? The soft parts of an animal can never be fossilised.

The picture shows a dinosaur footprint. It is not a body part. Can it be called a fossil?

By what process do bacteria develop resistance to antibiotics?

Read the following passage about antibiotic resistance. What word goes in space B?

MRSA stands for methicillin-resistant Staphylococcus aureus. What is methicillin?

What is a feature that helps an organism to survive called?

Look at the picture below. What does the cactus store in its stem that helps it to survive? Give the name, not the symbols.

What is the term for the non-living parts of a community?

What is the term for the living parts of an ecosystem?

There is an extremophile that lives on the edges of hot volcanoes. The extreme condition it is adapted to is high __________. What word completes the sentence?

Camouflage helps predators to survive by helping them blend in with their surroundings so their _________ won't see them approach. What one word completes the sentence?

Which of the following is NOT an adaptation in elephants that helps them cope with high temperatures?

Look at the picture below. The spines on a cactus help prevent it from being eaten and from losing what?

Is temperature a biotic or an abiotic factor on a community?

Is disease a biotic or an abiotic factor on a community?

How does the speed of reflex actions compare to normal responses? Are they faster or slower than normal responses?

Look at the table below which shows a conversion between the ruler reading in a ruler drop experiment and reaction time in seconds. What is the reaction time if the ruler reading is 6 cm?

In a ruler dropping investigation, students who are dropping the ruler should wear what in order to avoid the possibility of the ruler hitting the floor and bouncing back up to hit their eyes?

Look at the table below which shows a conversion between the ruler reading in a ruler drop experiment and reaction time in seconds. What is the difference between the reaction time at 2cm and 5cm on the ruler reading?

Coffee or certain cola drinks can be used to test the effect of __________ on reaction time. What drug completes the sentence?