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Students investigated the effect of concentration of salt solution on the mass of pieces of potato. This is the method used. 1. Cut two pieces of potato to the same size. 2. Record the mass of each piece of potato. 3. Place one piece of potato into a beaker containing a dilute salt solution. 4...
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Add to cartStudents investigated the effect of concentration of salt solution on the mass of pieces of potato. This is the method used. 1. Cut two pieces of potato to the same size. 2. Record the mass of each piece of potato. 3. Place one piece of potato into a beaker containing a dilute salt solution. 4...
A root is a plant organ. Plant roots contain many different types of tissue. What is a tissue? Tissue in the tip of a plant root contains stem cells. Stem cells can differentiate into any type of cell. Name the type of tissue in plants that contains stem cells. In the past many drugs were ex...
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Add to cartA root is a plant organ. Plant roots contain many different types of tissue. What is a tissue? Tissue in the tip of a plant root contains stem cells. Stem cells can differentiate into any type of cell. Name the type of tissue in plants that contains stem cells. In the past many drugs were ex...
Hormones are important for controlling many processes in the human body. Hormones are produced by glands Which organ system has glands that produce hormones How are hormones transported around the body? Which gland in Figure 1 produces insulin? Which organ does insulin mainly affect? Give on...
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Add to cartHormones are important for controlling many processes in the human body. Hormones are produced by glands Which organ system has glands that produce hormones How are hormones transported around the body? Which gland in Figure 1 produces insulin? Which organ does insulin mainly affect? Give on...
What name is given to all of the organisms living in the same habitat? Figure 1 shows four species of bird from the same habitat in the UK. Which species of bird in Figure 1 do scientists think are most closely related? Scientists think the brambling and the bullfinch belong to different species....
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Add to cartWhat name is given to all of the organisms living in the same habitat? Figure 1 shows four species of bird from the same habitat in the UK. Which species of bird in Figure 1 do scientists think are most closely related? Scientists think the brambling and the bullfinch belong to different species....
The human body is made of different types of cell. Draw one line from each type of cell to the organ system where the cell is found. Explain one way a sperm cell is adapted for its function. Enzymes break down food in the digestive system. The enzyme amylase digests starch. Which part of the d...
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Add to cartThe human body is made of different types of cell. Draw one line from each type of cell to the organ system where the cell is found. Explain one way a sperm cell is adapted for its function. Enzymes break down food in the digestive system. The enzyme amylase digests starch. Which part of the d...
Scientists investigated the effect of smoking and of BMI on the birth mass of babies. Women’s BMI categories were determined before the women became pregnant. 0 1 . 5 Suggest why BMI categories were determined before the women became pregnant. Scientists estimate that 17% of the UK population...
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Add to cartScientists investigated the effect of smoking and of BMI on the birth mass of babies. Women’s BMI categories were determined before the women became pregnant. 0 1 . 5 Suggest why BMI categories were determined before the women became pregnant. Scientists estimate that 17% of the UK population...
Why is peat removed from peat bogs? Peat can decay. Name one type of organism that causes decay. Complete the sentences. Choose answers from the box. [2 marks] carbon dioxide nitrogen oxygen sulfur dioxide The organisms that cause decay respire. The gas used for respiration is . The...
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Add to cartWhy is peat removed from peat bogs? Peat can decay. Name one type of organism that causes decay. Complete the sentences. Choose answers from the box. [2 marks] carbon dioxide nitrogen oxygen sulfur dioxide The organisms that cause decay respire. The gas used for respiration is . The...
Sexual reproduction produces offspring that are genetically different from each other. Give two reasons why sexual reproduction causes variation in the offspring. Embryos can be screened for the alleles that cause inherited disorders. Give two advantages of embryo screening. A bacterium called...
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Add to cartSexual reproduction produces offspring that are genetically different from each other. Give two reasons why sexual reproduction causes variation in the offspring. Embryos can be screened for the alleles that cause inherited disorders. Give two advantages of embryo screening. A bacterium called...
Question 1 Question Answers Extra information Mark AO / Spec Ref. 01.1 a leaf 1 AO2 4.2.1 4.2.3.1 Question Answers Extra information Mark AO / Spec Ref. 01.2 1.1 or 3.6 3 1.2 (grams) if no answer given on answer lines, allow an answer in Table 1 1 1 Question Answers Extra in...
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Add to cartQuestion 1 Question Answers Extra information Mark AO / Spec Ref. 01.1 a leaf 1 AO2 4.2.1 4.2.3.1 Question Answers Extra information Mark AO / Spec Ref. 01.2 1.1 or 3.6 3 1.2 (grams) if no answer given on answer lines, allow an answer in Table 1 1 1 Question Answers Extra in...
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01.1 a group of the same / similar cells or a group of cells with a (similar / specific) function ignore a group of cells unqualified ignore examples of tissue functions 1 AO1 4.2.1 Question Answers Extra information Mark AO / Spec Ref. 01.2 meristem (tissue) 1 AO1 4.1.1.4 4.1.2...
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Add to cart01.1 a group of the same / similar cells or a group of cells with a (similar / specific) function ignore a group of cells unqualified ignore examples of tissue functions 1 AO1 4.2.1 Question Answers Extra information Mark AO / Spec Ref. 01.2 meristem (tissue) 1 AO1 4.1.1.4 4.1.2...
Question Answers Extra information Mark AO / Spec Ref. 01.1 the endocrine system 1 AO1 4.5.3.1 Question Answers Extra information Mark AO / Spec Ref. 01.2 by the blood 1 AO1 4.5.3.1 Question Answers Extra information Mark AO / Spec Ref. 01.4 D 1 AO1 4.5.3.1 4.5.3.2 Question Answers Extr...
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Add to cartQuestion Answers Extra information Mark AO / Spec Ref. 01.1 the endocrine system 1 AO1 4.5.3.1 Question Answers Extra information Mark AO / Spec Ref. 01.2 by the blood 1 AO1 4.5.3.1 Question Answers Extra information Mark AO / Spec Ref. 01.4 D 1 AO1 4.5.3.1 4.5.3.2 Question Answers Extr...
Question Answers Extra information Mark AO / Spec Ref. 01.2 brambling and chaffinch 1 AO2 4.6.4 01.3 the brambling and the bullfinch cannot breed together to give fertile offspring 1 AO1 4.6.2.2 constant (from Jan) to Mar / (mid-)Apr increases (from mid-)Apr to / and May decreases ...
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Add to cartQuestion Answers Extra information Mark AO / Spec Ref. 01.2 brambling and chaffinch 1 AO2 4.6.4 01.3 the brambling and the bullfinch cannot breed together to give fertile offspring 1 AO1 4.6.2.2 constant (from Jan) to Mar / (mid-)Apr increases (from mid-)Apr to / and May decreases ...
has a tail (so) it can swim OR has (many) mitochondria (1) to transfer / release / energy (for sperm to swim) (1) OR has enzyme(s) (1) to penetrate into the egg (1) OR is streamlined (1) to swim faster (1) OR has 23 chromosomes (1) to produce 46 chromosomes in fertilised cell (1) ...
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Add to carthas a tail (so) it can swim OR has (many) mitochondria (1) to transfer / release / energy (for sperm to swim) (1) OR has enzyme(s) (1) to penetrate into the egg (1) OR is streamlined (1) to swim faster (1) OR has 23 chromosomes (1) to produce 46 chromosomes in fertilised cell (1) ...
any one from: • (coronary) heart disease / CHD / cardiovascular disease • diabetes ignore cancer allow atherosclerosis ignore heart attack allow high blood pressure allow stroke / asthma / depression / gallstones / (osteo)arthritis allow sleep apnoea any one from: • taxes on h...
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Add to cartany one from: • (coronary) heart disease / CHD / cardiovascular disease • diabetes ignore cancer allow atherosclerosis ignore heart attack allow high blood pressure allow stroke / asthma / depression / gallstones / (osteo)arthritis allow sleep apnoea any one from: • taxes on h...
any one from: • practice • fewer distractions • familiarity (with test) ignore repeating allow reference to effect of caffeine allow answers referring to competitiveness eg the student wanted to beat a previous time 1 AO3 4.5.2 4.5.1 RPA6 2 bars correctly plotted and 2 ba...
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Add to cartany one from: • practice • fewer distractions • familiarity (with test) ignore repeating allow reference to effect of caffeine allow answers referring to competitiveness eg the student wanted to beat a previous time 1 AO3 4.5.2 4.5.1 RPA6 2 bars correctly plotted and 2 ba...
(parents gamete genotypes shown) D d and d d (possible offspring genotypes correctly derived) Dd Dd dd dd correct identification of Dd offspring as having polydactyly probability must match derived offspring genotypes allow in either position in Punnett square allow correct der...
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Add to cart(parents gamete genotypes shown) D d and d d (possible offspring genotypes correctly derived) Dd Dd dd dd correct identification of Dd offspring as having polydactyly probability must match derived offspring genotypes allow in either position in Punnett square allow correct der...
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