Answer the following statements true (T) or false (F)
1. Because they differ from other living organisms by lacking a discrete nucleus and many other cell inclusions, bacteria and archaea are more closely related to one another than they are to eukaryotes.
2. Archaea that tolerate and/or require high salinities are called halophiles.
3. Various anaerobic archaea that convert carbon dioxide and other carbon-bearing compounds into methane are called methanotrophs.
4. Type IV secretion systems are potentially applicable to treatment of human disease by using them to deliver DNA to target cells in human gene therapy.
1. FALSE
Although Bacteria and Archaea indeed share these common features, Archaea and Eukarya are thought to be more closely related to one another than either is to Bacteria. Archaea and Eukarya also share a number of common characteristics that indicate common ancestry.
2. TRUE
3. FALSE
4. TRUE
You might also like to view...
Conjugation is useful for determining relatedness between bacteria at the species level because it never occurs between organisms of different genera.
Answer the following statement true (T) or false (F)
A group of individuals of the same species occupying a given area is a ____
a. population b. species pool
c. gene pool d. genetic drift e. group divergence
A cell membrane is a lipid _________ because the phospholipids line up in TWO ROWS to try and keep their ______________ tails away from water.
Fill in the blank(s) with the appropriate word(s).
Sperm mature in the________ .
a. epididymus.
b. seminal vesicles.
c. vas deferens.
d. prostate gland.
e. bulbourethral gland