High temperatures denatures enzymes
Low temperatures below the normal inactivates enzymes
Most enzymes in the body work within a narrow range of temperature
Evanxt Mwandyk answered the question on May 23, 2019 at 18:52
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What are the side effects of lactic acid accumulation?
(Solved)
What are the side effects of lactic acid accumulation?
Date posted:
May 23, 2019
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Answers (1)
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Below is a photograph obtained from the pelvic region of a human being and showing some bones of the vertebral column. Examine it carefully and...
(Solved)
Below is a photograph obtained from the pelvic region of a human being and showing some bones of the vertebral column. Examine it carefully and answer the questions that follow.
a) Identify the bones labeled 1,2 and 3
b) (i) Name the type of joint formed at the proximal end of bone as 3 as it articulates with the adjacent bone (1mk)
(ii) Give an observable feature on bone 3 for your answer in (b) (i) above
c) (i) Identify the part labeled P
(ii)Give two functions of the part identified in (c) (i) above
d) Using observable features only, state how bone 1 is adapted to its functions
e) (i) Identify the part labeled Q
(ii) Give the function of the part labeled Q
Date posted:
May 23, 2019
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Answers (1)
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Examine the photograph which shows parts of the urogenital system of a female rat and answer the questions that follow. The
organ marked 1 is the...
(Solved)
Examine the photograph which shows parts of the urogenital system of a female rat and answer the questions that follow. The
organ marked 1 is the stomach.
a) i) Name the organ marked 2 .
ii) State two functions of the organ.
iii) What is the functional unit of the organ named in (a) (i) above?
b) i) Identify and name each of the organs marked 3 and 4.
ii) State two functions of the part marked 4.
c) i) Identify and name the organ marked 5.
ii) Explain two functions of the organ named c(i) above.
d) The organ marked 6 is the large intestine. State two functions of the large intestine.
Date posted:
May 23, 2019
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Answers (1)
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Give a reason why lack of roughage in the diet often leads to constipation.
(Solved)
Give a reason why lack of roughage in the diet often leads to constipation.
Date posted:
May 23, 2019
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Answers (1)
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State how excessive use of pesticides may affect soil fertility.
(Solved)
State how excessive use of pesticides may affect soil fertility.
Date posted:
May 23, 2019
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Answers (1)
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Explain how the process of evolution may result to the formation of a new species.
(Solved)
Explain how the process of evolution may result to the formation of a new species.
Date posted:
May 23, 2019
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Answers (1)
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An experiment was set up as shown in the diagram below.
The set up was left was 30 minutes.
a) State the expected results from the starch...
(Solved)
An experiment was set up as shown in the diagram below.
The set up was left was 30 minutes.
a) State the expected results from the starch solution.
b) Explain your answer in (a) above
Date posted:
May 23, 2019
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Answers (1)
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State the role of glycogen in the human body.
(Solved)
State the role of glycogen in the human body.
Date posted:
May 23, 2019
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Answers (1)
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State two processes which occur during prophase 1 of meiosis.
(Solved)
State two processes which occur during prophase 1 of meiosis.
Date posted:
May 23, 2019
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Answers (1)
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State the role of vitamin A in humans.
(Solved)
State the role of vitamin A in humans.
Date posted:
May 23, 2019
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Answers (1)
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Give a reason why red blood cells have no nucleus.
(Solved)
Give a reason why red blood cells have no nucleus.
Date posted:
May 23, 2019
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Answers (1)
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Name two forms in which carbon (IV) oxide is transported in blood.
(Solved)
Name two forms in which carbon (IV) oxide is transported in blood.
Date posted:
May 23, 2019
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Answers (1)
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Name the class to which the tick belongs.
(Solved)
Name the class to which the tick belongs.
Date posted:
May 23, 2019
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Answers (1)
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The diagram below represents a cell organelle.
a) Name the part labelled B.
b) State the function of the part labelled A.
(Solved)
The diagram below represents a cell organelle.
a) Name the part labelled B.
b) State the function of the part labelled A.
Date posted:
May 23, 2019
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Answers (1)
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Study the photograph below. The specimen had been placed in adequate light at a horizontal position for one week.
i) What was the aim of this...
(Solved)
Study the photograph below. The specimen had been placed in adequate light at a horizontal position for one week.
i) What was the aim of this experiment?
ii) What would be the result if seedling is placed on a working klinostat?
iii) Explain how the results at the point shown by the arrow occurred.
Date posted:
May 23, 2019
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Answers (1)
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Below are drawings of some organisms belonging to the same phylum. Examine them carefully.
a) i) Name the phylum to which the organism represented by the...
(Solved)
Below are drawings of some organisms belonging to the same phylum. Examine them carefully.
a) i) Name the phylum to which the organism represented by the drawings belong.
ii) Give two reasons for answer in a(i) above.
b) Using the features in the order given below, construct a dichotomous key that can be used to identify the specimens.
- Presence or absence of wings.
- Shape of the body
- Length of antennae
- Type of wings
- Number of wings.
Date posted:
May 23, 2019
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Answers (1)
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Describe the adaptations of the following components of blood to its functions.
i) Red blood cell.
ii) White blood cells
(Solved)
Describe the adaptations of the following components of blood to its functions.
i) Red blood cell.
ii) White blood cells
Date posted:
May 23, 2019
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Answers (1)
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Describe how water reaches the xylem tissue of the root in a plant from the soil.
(Solved)
Describe how water reaches the xylem tissue of the root in a plant from the soil.
Date posted:
May 23, 2019
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Answers (1)
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In an experiment to investigate an aspect of digestion, two test tubes A and B were set up as shown in the diagram below.
a) What...
(Solved)
In an experiment to investigate an aspect of digestion, two test tubes A and B were set up as shown in the diagram below.
The test tubes were left in the bath for 30 minutes. The contents of each test tube was then tested for starch using iodine solution.
a) What was the aim of the experiment?
b) What results were expected in test tube A and B.
c) Account for the results you have given in (b) above in test tube A and B.
d) Why was the set up left at 37°C?
Date posted:
May 23, 2019
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Answers (1)
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The diagram below represents a mammalian embryo and associated maternal structures.
a) Name the parts labelled R and S.
b) State THREE adaptation of part Q...
(Solved)
The diagram below represents a mammalian embryo and associated maternal structures.
a) Name the parts labelled R and S.
b) State THREE adaptation of part Q to its functions.
c) i) Name the part labelled T.
ii) What is the function of part T?
Date posted:
May 23, 2019
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Answers (1)