Andrew is studying bone development and calcium absorption in elephants. Which vitamin is

likely an important component of his study?



a. vitamin D
b. vitamin A
c. vitamin K
d. vitamin B


A

Biology & Microbiology

You might also like to view...

Which of the following are primarily structures

for the packaging of cellular secretions for export from the cell?

a. Golgi bodies b. mitochondria c. lysosomes d. ribosomes e. endoplasmic reticulum

Biology & Microbiology

Refer to Figure 5-1. Which of the following statements about the red blood cells in Figure B is true?


a. These red blood cells have been placed in an isotonic solution.
b. These red blood cells have swollen in response to a hypertonic external solution.
c. These red blood cells have swollen in response to a hypotonic external solution.
d. These red blood cells have shrunken in response to a hypertonic external solution.
e. These red blood cells have shrunken in response to a hypotonic external solution

Biology & Microbiology

The Ti plasmid is crucial to genetic engineering in plants. The key feature of the Ti plasmid is that it

A) uses the CRISPR/Cas system to edit the plant genome. B) only replicates in bacterial cells. C) uses zinc finger nucleases (TALENs) to edit the plant genome. D) leads to insertion of a part of the plasmid DNA into the plant cell chromosomal DNA. E) acts as an artificial chromosome within plant cells.

Biology & Microbiology

All of the following are characteristics of viruses except 

A. ultramicroscopic size. B. definite shape. C. ability to infect host cells. D. metabolism. E. genes.

Biology & Microbiology