EOCT Review#6

30 Questions

Created by Brandy McClain

Which of the following is a consumer-producer relationship?

a. Roadrunners eating snakes

b. Snakes eating toads

c. Toads eating grasshoppers

d. Grasshoppers eating grass

1

Why does the white-tailed deer population

drop when the carrying capacity is exceeded?

a. Resources are too low to support the populationb. Weather changes reduce deer populationc. The height of edible plants exceeds the height of the deerd. Competition by other animals is greatly reduced

2

Before a cell goes through eithermitosis or meiosis, which process

must be carried out by the DNA in thenucleus?

a. Replication b. Transcriptionc. Translation d. Nondisjunction

3

Which of the following processes return

water vapor to the atmosphere?

a.Precipitation & condensation

b.Transpiration & precipitation

c.Transpiration & evaporation

d.Evaporation & condensation

4

Which two organisms are most likely to compete with each other

for sunlight?

a. Zebra and wildebeest b. Mushroom and pine treec. Birch tree and mossesd. Zebra and mosses

5

To which of these organisms is the gray wolf (Canis lupus) most

closely related?

a.Calidris alba

b.Anarhichas lupus

c. Quercus rubra

d.Canis familiaris

6

In order for a species to survive and be fit, it must be able to –

a. consume a wide variety of foodb. reproduce successfullyc. maintain a constant body temperatured. destroy competing species

7

A human zygote, like most other human cells, contains 46 chromosomes. How many

chromosomes does a human zygote receive from the mother?

a. 0

b. 23

c. 46

d. 92

8

Enzymes are classified as which of thefollowing biological organic

compounds?

a. Lipidsb. Proteins c. Carbohydratesd. Nucleic acids

9

Which cell process will movesubstances against a

concentrationgradient?

a. diffusionb. facilitated diffusionc. osmosisd. active transport

10

Individuals who lack lactase areunable to break down the sugar

lactose. Which term best describeslactase?

a. Enzymeb. Starchc. Carbohydratesd. Fatty acid

11

Sexual reproduction provides for what

to occur?

a. cloningb. buddingc. genetic stabilityd. genetic variation

12

Which is responsible for mostgenotypic and phenotypic

variationamong humans?

a. meiosisb. mitosisc. cloningd. budding

13

Which is the best evidence of an evolutionary relationship between

two organisms?

a. Similarity in behaviorb. Similarity in habitatc. Similarity in DNAd. Similarity in niche

14

In the carbon cycle, atmosphericcarbon dioxide is converted into

organic material by which process?

a. Transpirationb. Cellular respirationc. Decompositiond. Photosynthesis

15

Why do ecosystems rarely containmore than a few trophic levels?

a. Energy transfer efficiency is high.b. Energy transfer efficiency is low.c. Energy amounts remain constant.d. Energy cannot flow through levels.

16

Recent climate data suggests a globalwarming trend. The most likely cause

could be an increase in which gas?

a. Oxygenb. Carbon dioxidec. Waterd. Nitrogen

17

The diagram below represents a freshwater protist. Which letter indicates a structure that prevents the accumulation of excess water

in the protist?

a. Ab. Bc. Cd. D

18

According to Darwin's theory of evolution, differences between species may be the result of

  a. the disuse of body structures

 b. the transmission of acquired characteristics

 c. natural selection

 d. mutagenic agents

19

Two nucleotide sequences found in two different species are almost exactly the same. This suggests that these species

a.  Are evolving into the same species  b. Contain identical DNA c. May have similar evolutionary histories d. Have the same number of mutations

20

The structural similarities between the flippers of whales and the arms of humans are used to show that the

a. Human species began life in the oceans b. Human species and whales have a common

ancestry c. Whales are older than the human species d. Whales evolved from the human species

21

Variations within a species are most likely the result of

a. Mutations and sexual reproduction b. Synapsis and disjunction c. Mitosis and asexual reproduction d. Overpopulation and recombination

22

Which diagram most correctly represents the process of mitosis?

a. 1b. 2c. 3d. 4

23

Which diagram represents an organelle that contains the enzymes needed to synthesize

ATP in the presence of oxygen?

a. 1b. 2c. 3d. 4

24

This graph shows how, during a chemical reaction, enzymes --

a. decrease the required time

b. raise the energy produced

c. lower the required activation energy

d. increase the initial-state energy

25

Predators often feed on weak or sickanimals in an ecosystem. The role of the

predator is described as its

a. nicheb. communityc. populationd. habitat

26

Some viral diseases require only onevaccination, which lasts for years. For other

diseases like the flu, vaccinations last only one season. The flu vaccine lasts such a short time

because the flu virus

a. Is more easily transmittedb. Mutates much more rapidlyc. Is less dangerousd. Is much smaller

27

When a virus infects a bacterium, whatdoes the virus inject into the cell?

a. Viral nucleic acidb. Capsid proteinsc. Hormonesd. Tail fibers

28

The function of the cell organelle circledbelow is to produce energy. What is the

name of this organelle?

a. Lysosomesb. Cell membranec. Ribosomed. Mitochondria

29

Which of the following “organisms” isconsidered to be an exception to the cell theory?

a. Bacteriab. Paramecium c. Virusd. Yeast

30

The End!!