ATI Biology 4

Question 1

Which of the following is a function of the rough endoplasmic reticulum?

Accepted Answer

Protein synthesis and modification

Answer

The rough ER, studded with ribosomes, synthesizes and processes proteins.

Question 2

What type of bond holds the two strands of a DNA double helix together?

Accepted Answer

Hydrogen bonds

Answer

Hydrogen bonds between complementary base pairs hold the two DNA strands together.

Question 3

Which kingdom do bacteria belong to that lack a true membrane-bound nucleus?

Accepted Answer

Prokaryotes

Answer

Bacteria are prokaryotes, lacking a membrane-bound nucleus and organelles.

Question 4

During cellular respiration, where does the electron transport chain occur in eukaryotes?

Accepted Answer

Inner mitochondrial membrane

Answer

The electron transport chain is embedded in the inner mitochondrial membrane.

Question 5

If a trait is determined by a recessive allele, when will it be expressed?

Accepted Answer

Only when homozygous recessive

Answer

A recessive trait appears only when both alleles are recessive (homozygous recessive).

HESI (ATI) Practice Test