What is the difference between an endergonic and an exergonic reaction in the cell?(One to two sentences only!)

In the Reznick and Endler study on guppies:

Which of the following is possible due to the high surface tension of water:

Karen wants to estimate the mean number of siblings for each student in her school. She records the number of siblings for each of 200 randomly selected students in the school. What is the sample?

Given the following list of data, what is the five-number summary?2, 2, 2, 3, 3, 4, 4, 5, 6, 10, 11, 11, 13, 13, 14

What are the names of the two types of bone tissue?

The cartilage found at the end of long bones to decrease friction at joint surfaces is called:

Bursae are fibrous sacs within the joint.

Which of the following bones are found in the axial skeleton?

Name the mature cell of living bone.