Chapter 42 Quiz 2

Fill in the blanks with suitable words. What are (a) and (b)?

• (a) Blastocysts；(b) Blastocysts

• (a) Blastocysts；(b) Bone marrow, blood and skin

• (a) Bone marrow, blood and skin；(b) Blastocysts

• (a) Bone marrow, blood and skin；(b) Bone marrow, blood and skin

Fill in the blanks with suitable words. What are (c) and (d)?

• (c) all cell types of the body；(d) all cell types of the body

• (c) a limited number of cell types；(d) all cell types of the body

• (c) all cell types of the body；(d) a limited number of cell types

• (c) a limited number of cell types；(d) a limited number of cell types

Fill in the blanks with suitable words. What are (e) and (f)?

• (e) Large；(f) Large

• (e) Limited；(f) Large

• (e) Large；(f) Limited

• (e) Limited；(f) Limited

Fill in the blanks with suitable words. What are (g) and (h)?

• (g) More difficult；(h) Less difficult

• (g) Less difficult；(h) More difficult

Fill in the blanks with suitable words. What are (i) and (j)?

• (i) Higher；(j) Lower

• (i) Lower；(j) Higher

Fill in the blanks with suitable words. What are (k) and (l)?

• (k) More；(l) Less

• (k) Less；(l) More

Transgenic organisms can be used to study the effects of a new drug on treating a certain type of cancer.

• True

• False

Transgenic plants can help relieve the problems of deficiency diseases in developing countries.

• True

• False

The yield of transgenic crops is generally lower than that of conventional crops.

• True

• False

The growth rate of salmon can be modified by genetic engineering.

• True

• False