Q1. 16
17
18
There are three different types of haemoglobin in the blood of an adult human. Each haemoglobin molecule
is composed of four polypeptide chains.
The table shows information about these types of haemoglobin.
Type of
haemoglobin
Percentage
present in the
blood (%)
Types of
polypeptide chain
present
No Calend
Looking good
wide oper
HbA,
,
96
2a and 28
НБА,
3
2a and 26
Hbf
1
2a and 2y
Calculate the ratio of polypeptide chains present in the blood of an adult human.

Match the types of competition to their descriptions

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Answer ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.