Answer the following questions true (T) or false (F)

1. Facilitated diffusion occurs through membrane-bound transport proteins.

2. Facilitated diffusion occurs down a concentration gradient.

3. Active transport moves a substance against the concentration gradient.


1. TRUE
2. TRUE
3. TRUE

Biology & Microbiology

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Which one of the following types of sequence can be found in a genome?

A. regulatory elements of protein-coding genes B. noncoding introns C. protein-coding exons D. coding sequence for RNAs E. All of the answer options are correct.

Biology & Microbiology

Valeria has a serious disorder called fragile X syndrome and her brother does not have the disorder

Her mother does not have the disorder but her father does. What is the most likely inheritance pattern for fragile X syndrome? A. Autosomal dominant D. X-linked recessive B. Autosomal recessive E. Y-linked recessive C. X-linked dominant

Biology & Microbiology

The karyotype designation for an infant with a deletion in the short arm of chromosome 5 (cri du chat syndrome) is

____________________Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The cell below is in



A. prophase.
B. telophase.
C. anaphase.
D. metaphase.

Biology & Microbiology