Biolgy Unit 2

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  • Created by: danielle
  • Created on: 15-04-19 15:08
P M O T R J R L H R L P I O S J N N A J H
S T S C E Q O T O J A N N I F X K E R B C
E E H Y V W O X G O D D D P B J J W R T X
E E F L E I X D Q K P F R P V J W V M G E
Y H A I R X T D O K P D O J C V B I D N F
E S V D S A I S G Y D A S P T O A R L G L
L E O B E D H N T N H B O G K A C A S E I
L U U N T X P Y U W U X P H H Y T L E B F
O L R F R W B N H I A B H X K X E P T J I
W B E C A P N M C K O B I O G R R A O C F
S T D B N A X H T E D B L H T V I R N R V
H A T J S T T C Y X R M A S R Y A T E H F
E K R B C F A Y M K M H U F I C O I E T E
E O A I R E T F R D A L G T C N U C S H B
T O I N I B M U T A T I O N W V J L O P O
R L T L P H Q P U L G T D B W V A E I A P
X M S D T K A H K I W Y F F X J P S W B N
P G V I A D I R E C T C O N T A C T D D Q
O X Y Y S X K S A E J J M Q M L J L N J G
A R O A E J P V J E E A K H K G I G M P L
I X E R B Q U Y O L S L I G K B F J W S K

Clues

  • Describe the costs and benefits of eternal & internal fertilisation. (3, 6, 5)
  • Describe what happens during Meosis 1. (4, 2, 4, 5)
  • Explain both populations in relation to Environment, Maturation Time, Lifespan, Death Rate, No. of offsrping produced per reproductive episode, No. of reproductions in lifetime, Timing of 1st reproduction, Size of offspring or eggs & Parental care (3, 5)
  • Give an example of an insect in which sex is determined through a set of specific chromosomes- the Sex Chromosomes (X & Y) (2, 10)
  • How do ectoparasites such as ticks and lice usually transmit from host to host? (3, 6, 7)
  • Through inheritance, what is most likely to become more frequent in subsequent generations? (8, 6)
  • What does the virus gene form when transcribed? (3, 5, 9)
  • What enzyme do RNA Retroviruses use to form DNA? (7, 13)
  • What is Turbuculosis caused by? (8)
  • What is variaiton a result of? (8)

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