Need help with these--
25. Bacteria and eukaryotes share the characteristic of
a. multicellularity
b. a cell nucleus
c. a cell membrane
d. all of the above
26. Two ways that bacteria causes disease are
a. toxins are released that break down and absorb host organic nutrients enzymes or enzymes are excreted that poison the host
b. enzymes are released that break down and absorb host organic nutrients or toxins are excreted that poison the host
c. enzymes are released that break down and absorb inorganic nutrients or toxins are excreted that poison the host
d. through the lytic and lysogenic cycles
27. HIV is spread through the body
a. after it replicates and leaves the macrophage by rupturing it
b. by taking it over the host macrophage’s DNA and directing it to attack other cells.
c. by budding from the macrophage and enveloping itself with the host’s cell membrane
d. by attaching the lymphocyte’s CCR5 receptors to itself which fools other lymphocytes.
29. Which kingdom of eukaryotes exhibits the broadest range of characteristics?
a. Animalia
b. Protista
c. Plantae
d. Eubacteria
B?
-MC
If no one gets to them, I will take a look tonight, I have a GScout cookie booth I have to attend to.
hahaha really? OK, thanks!
-MC
Sure! Let's go through each question and explain how to arrive at the correct answer.
25. Bacteria and eukaryotes share the characteristic of
a. multicellularity
b. a cell nucleus
c. a cell membrane
d. all of the above
To determine the correct answer, we need to consider the characteristics of bacteria and eukaryotes. Bacteria are prokaryotic organisms, which means they lack a nucleus and membrane-bound organelles. On the other hand, eukaryotes, such as plants, animals, fungi, and protists, have a nucleus and membrane-bound organelles. So, we can eliminate option b (a cell nucleus) since bacteria do not have one. Bacteria and eukaryotes do share the characteristic of a cell membrane, so option c is correct. However, bacteria are typically unicellular, while eukaryotes can be either unicellular or multicellular. Therefore, option a (multicellularity) is incorrect. The correct answer is option c (a cell membrane).
26. Two ways that bacteria causes disease are
a. toxins are released that break down and absorb host organic nutrients enzymes or enzymes are excreted that poison the host
b. enzymes are released that break down and absorb host organic nutrients or toxins are excreted that poison the host
c. enzymes are released that break down and absorb inorganic nutrients or toxins are excreted that poison the host
d. through the lytic and lysogenic cycles
The correct answer here is option b. Bacteria can cause disease by releasing enzymes that break down and absorb the host's organic nutrients. This helps the bacteria obtain nutrients for their growth and survival. Additionally, bacteria can also excrete toxins that poison the host, further contributing to the disease.
27. HIV is spread through the body
a. after it replicates and leaves the macrophage by rupturing it
b. by taking it over the host macrophage’s DNA and directing it to attack other cells.
c. by budding from the macrophage and enveloping itself with the host’s cell membrane
d. by attaching the lymphocyte’s CCR5 receptors to itself which fools other lymphocytes.
The correct answer here is option c. HIV (Human Immunodeficiency Virus) is a virus that primarily attacks immune system cells, including macrophages and lymphocytes. After infecting a macrophage, the virus can leave the cell by budding, meaning it envelops itself with the host's cell membrane. This wrapped virus particle can then infect other cells, contributing to the spread of the virus throughout the body.
29. Which kingdom of eukaryotes exhibits the broadest range of characteristics?
a. Animalia
b. Protista
c. Plantae
d. Eubacteria
The correct answer here is option b. The kingdom Protista encompasses a wide range of eukaryotic organisms that do not fit into the other kingdoms, such as animals, plants, and fungi. Protists can be unicellular, colonial, or multicellular, and they exhibit a diverse array of characteristics. This kingdom includes various organisms like algae, amoebas, ciliates, and many others, making it the kingdom with the broadest range of eukaryotic characteristics.