Xylem Study guides, Class notes & Summaries
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2023 AQA A-level BIOLOGY 7402/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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2023 AQA A-level BIOLOGY 7402/1 Paper 1 
Question Paper & Mark scheme (Merged) June 
2023 [VERIFIED] 
Candidate number 
I declare this is my own work. 
A-level 
BIOLOGY 
Paper 1 
Wednesday 7 June 2023 Afternoon Time allowed: 2 hours 
Materials 
For this paper you must have: 
• a ruler with millimetre measurements 
• a scientific calculator. 
Instructions 
• Use black ink or black ball-point pen. 
• Fill in the boxes at the top of this page. 
• Answer all questions. 
• You must answ...
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AC-HPAT Prep (Biology, Chemistry, Physics, Math) 188 Questions With Complete Solutions.
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AC-HPAT Prep (Biology, Chemistry, Physics, Math) 188 Questions With Complete Solutions. 
 
Most of the cell membrane's specific functions are controlled by: 
Proteins 
Alcoholic Fermentation is a form of: 
Anaerobic Respiration 
Phagocytosis is a form of: 
Endocytosis 
What is a pyruvate? 
Pyruvate is an important chemical compound in biochemistry. It is the output of the metabolism of glucose known as glycolysis. One molecule of glucose breaks down into two molecules of pyruvate, which are then...
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AP Bio Practice Exam 1 Questions and Answers
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AP Bio Practice Exam 1 Questions and Answers 
Humans produce sweat as a cooling mechanism 
to maintain a stable internal temperature. Which 
of the following best explains how the properties 
of water contribute to this physiological process? - Correct Answer ️️ -The high heat of 
vaporization of water 
allows the body to remove excess heat 
through a phase change of water from 
liquid to gas 
A student placed a semipermeable membrane 
inside a U-shaped channel with two chambers, 
as shown. ...
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Louisiana Horticulture License Review Questions And Revised Correct Answers
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Louisiana Horticulture License 
Review Questions And Revised 
Correct Answers 
A plant's scientific name of a plant is composed of _________ 
and _________. - ANSWER : genus and species 
Alba is a term that describes a plant as _________. - ANSWER : 
white 
Triacanthos describes a plant that is _________. - ANSWER : 
three spined 
The functions of the root system are: - ANSWER : anchorage, 
absorption, conduction and 
storage 
The tap root could be described as: - ANSWER : a fleshy food ...
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Louisiana Horticulture Test Study Guide (2024) || Complete Questions & Answers (100% Verified)
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Louisiana Horticulture Test Study Guide (2024) || Complete Questions & Answers (100% Verified) 
Louisiana Horticulture Test Study Guide (2024) || Complete Questions & Answers (100% Verified) 
 
What is the difference between a cultivar and variety? - ANSWER - Cultivar- A plant or grouping of plants selected for desirable characteristics that can be maintained by propagation 
 
Variety- A naturally occurring subgroup of a species which has some distinguishing characters 
 
Who is Linnaeus? What s...
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AQA A Level Biology- Xylem and Phloem Questions & Correct Answers/ Graded A+
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What are xylem? 
: Tubes that carry water and mineral ions in solution; water travels upwards from roots to 
leaves. They are formed from dead cells. 
How is water transported in the xylem? 
: THE COHESION-TENSION THEORY: 
1)Water evaporates from the leaves- transpiration. 
2)This creats tension which pulls more water into the leaf. 
3)Water molecules are cohesive so the whole column of water moves upwards. 
4)Water enters the stem via the roots. 
What is transpiration? 
: When water evaporates...
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AQA 7402-1 BIOLOGY A LEVEL PAPER 1 MAY 2023
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0 1 . 1 Give the three structural features found in all virus particles and describe the function 
of one of these features. 
[2 marks] 
1 
2 
3 
Function of one named feature 
0 1 . 2 Explain why viruses are described as acellular and non-living. 
[2 marks] 
0 1 . 3 Give one reason why antibiotics are not effective against viruses. 
[1 mark] 
5 
3 
*03* 
Turn over ► 
IB/M/Jun23/7402/1 
Do not write 
outside the 
0 2 box . 1 Chitin is a polysaccharide. The chitin monomer is a β-glucose mol...
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AP Bio Practice Exam 1 With Complete Questions And Answers
- Exam (elaborations) • 9 pages • 2023
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Humans produce sweat as a cooling mechanism 
to maintain a stable internal temperature. Which 
of the following best explains how the properties 
of water contribute to this physiological process? - ANSWER The high heat of vaporization of water 
allows the body to remove excess heat 
through a phase change of water from 
liquid to gas 
 
A student placed a semipermeable membrane 
inside a U-shaped channel with two chambers, 
as shown. The membrane permits the movement 
of water but not salt. The...
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ISA Arborist Certification Study Guide Chapter 1 with Complete Solutions
- Exam (elaborations) • 3 pages • 2023
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ISA Arborist Certification Study Guide Chapter 1 with Complete SolutionsISA Arborist Certification Study Guide Chapter 1 with Complete SolutionsISA Arborist Certification Study Guide Chapter 1 with Complete SolutionsISA Arborist Certification Study Guide Chapter 1 with Complete Solutions 
 
Meristems - ANSWER-Sites of rapid cell division in the shoot tips, root tips, and cambium are called ____________. 
 
Apical - ANSWER-Meristems located at the end of the shoots are called primary or _________...
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AQA A Level Biology- Xylem and Phloem Post Exam Questions And Correct Answers 2024.
- Exam (elaborations) • 3 pages • 2024
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What are xylem? - Answer Tubes that carry water and mineral ions in solution; water travels upwards from roots to leaves. They are formed from dead cells. 
 
How is water transported in the xylem? - Answer THE COHESION-TENSION THEORY: 
1)Water evaporates from the leaves- transpiration. 
2)This creats tension which pulls more water into the leaf. 
3)Water molecules are cohesive so the whole column of water moves upwards. 
4)Water enters the stem via the roots. 
 
What is transpiration? - An...
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