TEAS Practice Test: Video 3 Answers (25 Questions)

Question 1

Which molecule carries amino acids to the ribosome during translation?

Accepted Answer

tRNA

Answer

Transfer RNA (tRNA) has an anticodon that matches mRNA codons and carries the corresponding amino acid to the ribosome for incorporation into the growing protein.

Question 2

A trait that is masked when a dominant allele is present is described as what?

Accepted Answer

Recessive

Answer

A recessive trait is expressed only when no dominant allele is present.

Question 3

In a typical food chain, organisms that produce their own food using sunlight are called what?

Accepted Answer

Producers

Answer

Producers, such as plants, make their own food through photosynthesis.

Question 4

Which organ system is primarily responsible for transporting nutrients and oxygen throughout the body?

Accepted Answer

Circulatory

Answer

The circulatory system transports oxygen, nutrients, and wastes via blood.

Question 5

The diffusion of molecules from an area of high concentration to low concentration is called what?

Accepted Answer

Passive diffusion

Answer

Passive diffusion moves molecules down their concentration gradient without energy.