312 What is the name of the apparatus Wustrated above? 313 Name FOUR external forces that would affect this experiment and In each
case indicate the effect it would have on the results
(8)
[10]
Question 4
41
Read the passage below and answer the questions that follows
Leukemia and Bone Marrow Transplant
Leukemia is a type of cancer which affects blood cells This disease
(as well as many other is caused by abnormal stem cells in the bone
marrow producing defective or immature blood cells. These abnormal
slem cells are usually treated by chemotherapy. Unfortunately, the large
doses of diemotherapy required also destroy healthy bone manow A
bone marrow transplant is necessary to replace the diseased and
damaged bone marrow
(abstrad from Understanding Life Suences grade 10)
(2)
4.1.1 Define a stem cell
(2)
4.12 How is leukemia caused?
413 Name two side effects of chemotherapy (2)
414 Besides chemotherapy, name any two other methods of treating cancer (2)
15 Name any FOUR diseases that affect the skeleton (4)​

Nhumans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? in humans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? a, b, ab, and o ab and o a, b, and o a and b