Question

1. revisit the anchoring phenomenon in constructing models of both a plant cell and an animal cell, a student must choose materials to represent each cells boundaries. what considerations must the student make to accurately reflect similarities and differences between the two cells boundaries?

1. it is well known that when exercising, your heart rate will increase. but what causes this increase?

a. make a claim make a claim about why heart rate increases during exercise.
b. use evidence find evidence from the chapter to support your claim. list these evidences.
c. use reasoning write a paragraph that explains the increase in heart rate during exercise. make sure to use the evidence you collected to support your claim.

Explanation:

35.

Plant cells have a rigid cell - wall outside the cell - membrane, while animal cells only have a cell - membrane. The student should choose a rigid material (like cardboard or clay) for the plant cell wall and a flexible material (like plastic wrap) for the cell - membrane of both cells to show the difference in rigidity and the common presence of the cell - membrane.

A. During exercise, the body's cells need more oxygen and nutrients, and the heart rate increases to pump more blood to meet this demand.
B. Evidence: Muscles require more oxygen during exercise for cellular respiration to produce energy. Blood carries oxygen and nutrients to the muscles.
C. When exercising, muscles contract more frequently and vigorously. They need more oxygen for aerobic respiration to generate ATP. The body senses the increased demand for oxygen and nutrients. The nervous and endocrine systems work together to increase the heart rate. The heart pumps more blood per minute, delivering more oxygen and nutrients to the muscles and removing more carbon - dioxide and waste products.

Answer:

The student should choose a rigid material for the plant cell wall and a flexible material for the cell - membrane of both cells to reflect the differences (rigid wall in plant cells) and similarities (cell - membrane in both).

36.