13 – What is been unlock in this analogy?

Which of the following is thought to be the most closely related to the common animal ancestor? fungal cells protist cells plant cells bacterial cells

Figure 13.6 Which of the following statements is true? a. Gram-positive bacteria have a single cell wall formed from peptidoglycan. b. Gram-positive bacteria have an outer membrane. c. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. d. Gram-negative bacteria have a cell wall made of peptidoglycan, while Gram-positive bacteria have a cell wall made of phospholipids.

Which of the following is not a feature common to most animals? development into a fixed body plan asexual reproduction specialized tissues heterotrophic nutrient sourcing

The first forms of life on Earth were thought to be_____. single-celled plants prokaryotes insects large animals such as dinosaurs

EVOLUTION LINK What types of similarities in cell structure and function tell biologists about the common origin of organisms? Explain.

Apply Evolutionary Thinking When a biologist first tested a new pesticide on a population of insects, she found that only 1% of the insects survived their exposure to the poison. She allowed the survivors to reproduce and discovered that 10% of the offspring survived exposure to the same concentration of pesticide. One generation later, 50% of the insects survived this experimental treatment. What is a likely explanation for the increasing survival rate of these insects over time?

The surface-to-volume ratio _______. a. does not apply to prokaryotic cells b. constrains cell size c. is pan of the cell theory

__________move around for at least part of their life.

Which of the following is not a mutualistic relationship? a shark using an aquatic cleaning station a helminth feeding from its host a bumblebee collecting pollen from a flower bacteria living in the gut of humans