Answers

AB

Answered

Learned behavior that causes a family of baby ducks to follow their mother is called

A) imprinting.
B) operant conditioning.
C) insight learning.
D) extinction.
E) motivation.

On Jul 30, 2024


A
AB

Answered

Which limbic structure filters incoming sensory information and interprets it in the context of emotional needs and survival?

A) Amygdala
B) Hippocampus
C) Basal ganglia
D) Hypothalamus
E) Thalamus

On Jul 23, 2024


A
AB

Answered

A large number of copies of any DNA segment can be obtained by:

A) introducing foreign DNA into a microorganism so that it can be replicated
B) stimulating increased transcription of the appropriate sequence of mRNA
C) stimulating increased translation of the appropriate DNA molecule
D) inducing the production of DNA from proteins
E) stimulating reverse transcription of tRNA

On Jun 26, 2024


A
AB

Answered

Provide some examples of how humans thermoregulate.

On Jun 23, 2024


Concepts to Consider: Skin receptors are sensitive to body temperature changes; they send information to the hypothalamus, which is the temperature control center. Nerves send a signal to the muscles to shiver, increasing the body temperature. When the body temperature is increased, sweat glands transfer heat to the environment by the evaporation of sweat. In addition, blood vessels dilate in the skin to release heat to the surface. When the body is cold, vessels in the skin constrict to reduce heat loss.
AB

Answered

Eutrophication refers to what kind of change in a lake?

A) an increase in depth
B) an increase in nutrient concentrations
C) an increase in species diversity
D) a decrease in nutrient concentrations
E) an increase in oxygen levels

On May 27, 2024


B
AB

Answered

Xylem consists of which cells?

A) tracheids only
B) sieve elements only
C) vessel elements only
D) sclerenchyma fibers and sieve elements
E) tracheids and vessel elements

On May 24, 2024


E