Question 1

During DNA extraction from strawberries, why is soap buffer added to the mixture?

Accepted Answer

To dissolve cell membranes and release DNA into solution.

Question 2

Which of the following best describes the difference between kinesis and taxis in animal behavior?

Accepted Answer

Kinesis is a non-directional response to a stimulus, while taxis is a directional movement toward or away from a stimulus.

Question 3

Which phylum does the organism Planaria belong to?

Accepted Answer

Platyhelminthes

Question 4

Which part of a flower produces ovules?

Accepted Answer

Ovary

Question 5

Which of the following is NOT a function of colorful petals in flowers?

Accepted Answer

Photosynthesis

Question 6

Which type of selection was demonstrated by the lab activity involving the survival of differently colored organisms in various environments?

Accepted Answer

Natural selection

Question 7

Which tissue type is responsible for conducting electrochemical impulses in vertebrates?

Accepted Answer

Nervous tissue

Question 8

Following an injury, which material gets calcified into bone during the healing process?

Accepted Answer

Cartilage

Question 9

Which animal phylum does NOT contain specialized cells forming tissues?

Accepted Answer

Porifera

Question 10

Which of the following is a keystone species in the intertidal zone, known for its impact on community structure?

Accepted Answer

Sea star

Question 11

How many chambers does a fish heart contain, and how does this compare to a mammalian heart?

Accepted Answer

Fish have two chambers; mammals have four chambers.

Question 12

Which muscle would you expect to find on the posterior side of a rat's hind limb?

Accepted Answer

Biceps femoris

Question 13

Which biome is characterized by low rainfall, extreme temperature fluctuations, and sparse vegetation?

Accepted Answer

Desert

Question 14

Which of the following is an example of a large herbivore that feeds on small plants like grass?

Accepted Answer

Grazer

Question 15

Which of the following best defines 'evenness' in a plant community?

Accepted Answer

The relative abundance of different species in a community.

Question 16

Which of the following plant groups produces seeds but not flowers?

Accepted Answer

Gymnosperms

Question 17

Which of the following is a distinguishing characteristic of animals in the kingdom Animalia?

Accepted Answer

They lack cell walls and are multicellular.

Question 18

Which of the following is the correct sequence for the flow of genetic information according to the central dogma of molecular biology?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 19

Which of the following is an example of a null hypothesis for an experiment testing Planaria orientation to light?

Accepted Answer

The number of Planaria on the dark side of the plate will equal the number on the light side.

Question 20

Which of the following is a function of the phloem in flowering plants?

Accepted Answer

Transporting sugars produced during photosynthesis

General Biology Lab Study Guide: Key Concepts and Applications

Study Guide - Practice Questions