Why is haplodiploidy thought to predispose hymenopteran lineages to eusocial behavior?

A) Daughters have a higher r than in diploid species.
B) Females have higher inclusive fitness from helping mothers than from reproducing.
C) Sisters are more closely related to each other than to their own offspring.
D) b and c
E) a, b, and c

When O₂ accepts electrons in aerobic respiration, it is converted to ____.

A) O₃
B) CO₂
C) OH⁻
D) H₂O
E) CO

Identify the muscle labeled "A" in the following figure.

A) palmaris longus
B) flexor carpi ulnaris
C) biceps brachii
D) epitrochlearis
E) triceps brachii

A physician specializes in surgery involving the following group of organs: mouth, esophagus, stomach, and intestines. Overall, what is the highest level of organization that this physician is specialized in?

A) cell
B) tissue
C) organ
D) organ system
E) organism