Free ATDH Biology and General Chemistry Questions and Answers

Question 1

What is the major function of the Golgi apparatus?

Accepted Answer

Sorting secretory and membrane proteins

Answer

Explanation:
The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids into vesicles for delivery to targeted destinations within or outside the cell. This includes sorting secretory proteins destined for secretion outside the cell and membrane proteins that are integrated into the cell membrane or other cellular compartments.

Question 2

Which might have an RNA genome?

Accepted Answer

Viruses

Answer

Explanation:
Viruses can have RNA genomes. Unlike bacteria, fungi, and protists, which typically have DNA genomes, viruses can contain either RNA or DNA as their genetic material. Some viruses, known as RNA viruses, have RNA genomes, while others have DNA genomes.

Question 3

To maintain homeostasis, a drop in body temperature in a mammal is generally followed by:

Accepted Answer

shivering.

Answer

Explanation:
When a mammal experiences a drop in body temperature, one of the primary responses to maintain homeostasis is shivering. Shivering is a physiological mechanism in which rapid muscle contractions generate heat, helping to increase body temperature back to the normal range. This response helps to counteract the decrease in temperature and restore equilibrium within the body.

Question 4

Which type of RNA binds an amino acid and carries it to the ribosome?

Accepted Answer

Transfer

Answer

Explanation:
Transfer RNA (tRNA) is the type of RNA that binds to specific amino acids and carries them to the ribosome during protein synthesis. Each tRNA molecule has an anticodon region that recognizes a specific codon on the mRNA (messenger RNA) and an attachment site for a specific amino acid. This allows tRNA to "translate" the information encoded in the mRNA into the corresponding sequence of amino acids in the growing polypeptide chain at the ribosome.

Question 5

Which condition is characterized by a symbiotic association between two species, without harm to either, but with some benefit to both symbionts?

Accepted Answer

Mutualism

Answer

Explanation:
Mutualism is a type of symbiotic relationship between two species in which both organisms benefit from the association. In mutualism, neither species is harmed, and both receive some form of benefit. This contrasts with predation, where one organism benefits at the expense of the other, and parasitism, where one organism benefits while the other is harmed. Commensalism, while similar to mutualism, involves one organism benefiting while the other is unaffected.

ATDH - Admission Test for Dental Hygiene Practice Test

ATDH - Admission Test for Dental Hygiene Practice Test

Free ATDH Biology and General Chemistry Questions and Answers