1. Some people get repeated fungal infections because they cannot destroy these dangerous microbes after their white blood cells phagocytize them. This most likely means that these people have __________ that do not work properly.

A. ribosomes
B. lysosomes
C. mitochondria
D. microtubules

is it A

2. Long structures used for cell movement are:
A. centrioles.
B. cilia.
C. flagella.
D. granules.

is it C

Your correct

I think the first answer is B, lysosomes.

1. To answer this question, we need to understand the function of white blood cells and the process of phagocytosis. Phagocytosis is the mechanism by which white blood cells engulf and destroy harmful microorganisms. After phagocytosis, the engulfed microorganisms are enclosed in a membrane-bound structure called a phagosome. To destroy the microorganisms within phagosomes, white blood cells rely on specialized organelles called lysosomes. Lysosomes contain digestive enzymes that break down the captured microorganisms, effectively killing them.

Given this information, we can determine that the correct answer to the first question is B. lysosomes. If a person's lysosomes do not work properly, the microorganisms within the phagosomes will not be effectively destroyed, leading to repeated fungal infections.

2. The question is asking for the long structures used for cell movement. Let's examine the options:

A. Centrioles: Centrioles are small cylindrical structures found in animal cells and are involved in cell division. They are not directly responsible for cell movement.

B. Cilia: Cilia are hair-like structures that extend from the surface of certain cells. They are involved in moving fluids and particles along the cell's surface. Cilia are responsible for cell movement in some cases, such as the movement of ciliated epithelial cells in the respiratory tract.

C. Flagella: Flagella are whip-like structures used by cells for movement. They are longer than cilia and propel the cell forward or backward in a whip-like motion. Flagella are commonly found in certain types of bacteria and eukaryotic cells, such as sperm cells.

D. Granules: Granules are small particles found within cells but are not directly involved in cell movement.

Based on this information, the correct answer to the second question is C. flagella. Flagella are the long structures used by cells for movement.