Exam 1: Studying Life

Which is required for natural selection to occur?

Prior to the industrial revolution in the mid-1800s, a species of moth had light-colored wings speckled with small black spots.This coloration camouflaged the moths resting on the birch trees growing in their native habitat, since birch bark has similar coloring.In the early 1900s, this changed as dark soot produced by industrial pollution coated birch trees such that the trees lost their speckled coloring.Years later, it was observed that the moths of this species had changed from being light and speckled to being solid black.Which is the most plausible reason for this change?

Which represents the correct order of the levels of complexity at which life is studied, from most inclusive to least inclusive?

Which claim has a scientific basis and why?

Some plants have a vascular system composed of a type of tissue called vascular tissue.Plant vascular tissue functions to carry water, minerals, and nutrients to cells throughout the plant.In an analogous way, some animals have a vascular system, which is composed of several types of tissues that function collectively to move water, minerals, and nutrients to cells throughout the animal's body.Which statement makes an accurate comparison of plant and animal vascular systems?

Which correctly lists the order of important first events in the history of life?

Which is not a step in the scientific method?

The accumulation of _______ allowed organisms to grow larger.

Discuss how the process of scientific inquiry is different from other forms of inquiry.Include in your discussion a description of the hypothesis-and-prediction approach.

Suppose that you are working in a research lab investigating the nature of multicellularity.Which evidence could you gather from two different types of cells obtained from an adult multicellular animal to show that they are specialized?

The organisms that produced oxygen gas in Earth's atmosphere paved the way for the type of metabolism used by larger organisms, called _______ metabolism.

An organism

Much of what we know about the biochemistry of photosynthesis was discovered in experiments with

The study of biology can be organized from the most basic unit, the molecule, up to the biosphere.Describe how each level is connected with the level below it.

Which is the oldest example of a human application of biological principles?

Suppose that multicellular life had never evolved on Earth.Which characteristic would be absent in the life forms observed today in that case?

The exposure of DNA to excessive levels of ultraviolet radiation produces dimers of thymine (a nucleotide); if unrepaired, these can lead to production of skin cancer.This mutation would

The change in genetic makeup of biological populations through time is called _______.

Which scientific name is written incorrectly?

Single-celled organisms that lack discrete intracellular compartments belong to the groups Archaea and _______.