Life Science Semester Review

Question 1

A predator preys on mussels.What will MOST LIKELY occur to the species mussels compete against?

Accepted Answer

Population numbers will increase due to less competition

Question 2

In which type of interaction do both species benefit?

Accepted Answer

mututalism

Question 3

If less river water flows to the ocean, what change would occur in the estuary from drought?

Accepted Answer

The estuary would become saltier.

Question 4

Which of the following could cause a decrease in the number of squirrels in a population?

Accepted Answer

an increase in competition with other nut-eating animals

Question 5

If a nest is in a tree for protection & the tree not affected. The symbiotic relationship is?

Accepted Answer

commensalism

Question 6

Why is water essential for a cell?

Accepted Answer

Most chemical reactions in cells require water.

Question 7

Which is an example of mutualism?

Accepted Answer

bats eating nectar and pollinating a cactus

Question 8

Which of the following statements is part of the Cell Theory?

Accepted Answer

Cells are the basic units of structure in living things.

Question 9

Which water biome has calm, shallow water perfect for plants & autotrophs to live in the sun?

Accepted Answer

estuary

Question 10

Food chain of: grasshopper, rat, snake, hawk. Which gets the most energy from the autotroph?

Accepted Answer

grasshopper

Question 11

How do heterotrophs get energy?

Accepted Answer

by consuming other organisms

Question 12

What is the order of water biomes from fresh to salty?

Accepted Answer

river, estuary, ocean

Question 13

What structure is selectively permeable, allows some material to pass into & out of a nucleus?

Accepted Answer

nuclear membrane

Question 14

What types of organisms are at the base of every energy pyramid?

Accepted Answer

producers

Question 15

What provides the primary source of energy for all food webs?

Accepted Answer

sunlight

Question 16

Which organ systems provide the mitochondria with food that they break down to release energy?

Accepted Answer

digestive and circulatory

Question 17

How would trees adapt to warmer temperatures over many years in a temperate forest?

Accepted Answer

They would keep their leaves longer in the fall.

Question 18

What are the levels of cell organization from SMALLEST to LARGEST?

Accepted Answer

cell, tissue, organ, organ system, organism

Question 19

How is diffusion different from active transport?

Accepted Answer

Diffusion does not require energy.

Question 20

Which is TRUE about the relationship between cells and tissues?

Accepted Answer

Cells of the same kind make up tissues.

Question 21

Which biome has lichens, mosses, reindeer, frozen water, very cold dry climate but no trees.

Accepted Answer

Tundra

Question 22

Old skin cells produce new skin cells. Which statement in the Cell Theory supports this fact?

Accepted Answer

All cells come from pre-existing cells.

Question 23

What is the sac in the cytoplasm of a cell that stores water, food, and other substances?

Accepted Answer

vacuole

Question 24

What does photosynthesis provide to heterotrophs?

Accepted Answer

It creates food they can eat.

Question 25

Bacteria inside cows' stomachs help digest the grass. What type of relationship is this?

Accepted Answer

mutualism

Question 26

Which cell has a cell wall and chlorplasm?

Accepted Answer

Plant Cell

Question 27

If a biome's average monthly temperature is below 20 degree what is the most useful adaptation?

Accepted Answer

hibernation

Question 28

The Dodo bird became extinct after cats & rats came to their island. What was the cause?

Accepted Answer

introduction of an exotic species

Question 29

Which organ systems provide the mitochondria with oxygen?

Accepted Answer

respiratory and circulatory

Question 30

Which of the following is a function of the cell wall?

Accepted Answer

It provides shape and support to the cell.

Life Science Semester Review

Questions 30

Life Science Semester Review

Questions 30