lab midterm

In what type of emergency situation would you utilize the lab chemical/safety shower?

Removing a large volume of chemicals spilled on unprotected arms or splashed onto your face or eyes.

To protect your skin and clothing from hazards such as chemical and infectious organisms, what should be worn at all times in the lab?

lab coat

Soap should be applied to ___ hands.

wet

Slides, scalpels, razor blades, cover glasses, and capillary tubes are all classified as

sharps

The best source of information regarding the hazards posed by any chemical and specific handling instructions is the

Safety Data Sheet (SDS)

The purpose of lab safety rules and protocols is to

protect everyone in the lab from injury and infection.

Which is the most appropriate disposal for a swab used to culture your throat during lab?

biohazard bag

Old lab notes, paper towels, and lens paper should be discarded into a ___ bin when you are finished with them.

trash

Dissection specimens and bacterial culture plates should be discarded into a __ bin when you are finished with them.

biohazard

Which of these items can be placed in the regular trash can or recycle container?

lab notes that are no longer needed that were used during lab and do not contain dangerous chemicals or infectious organisms

When is it crucial for you to use protective eye wear in the lab?

when working with corrosive, irritating, or infectious materials that may be a splash hazard

Lab coats, gloves, face masks and goggles are all examples of 

personal protective equipment (PPE).

Where should glass slides, pipettes, and capillary tubes be disposed?

sharps container

Which of the following should be autoclaved after working in the lab?

glass bacterial culture tubes

A disinfectant is used on your work surface

All of the answer choices are correct.

Differences in function between the wing of a bird and the forelimb of a seal can be explained by

natural selection and adaptation to different environments.

When comparing two species, the presence of which type of structures indicates descent through modification from a common ancestor?

homologous

What bone is highlighted in purple?

ulna

Which of the following represents the forelimb of a human?

A

Even though its structure and function has been modified in different species, the humerus bone of vertebrate forelimbs is an example of                      because it arose from the same bone in a common ancestor.

homology

__ are remnants of organisms that lived long ago.

fossils

The ulna bone in the forelimb of a cat is homologous to the                      bone in the forelimb of a horse.

ulna

Which of the following would be an evidence of evolution?

all of these are evidences of evolution

What describes one way that the bat forelimb has evolved to be adapted for flight?

The phalanges are very long and linked by fibrous webbing

The process of change in a living organism over many generations and long periods of time is called

evolution

Which of the following mechanisms of change in gene frequencies is responsible for the antibiotic resistance of E. coli in the antibiotic resistant bacteria experiment?

natural selection

What bone is highlighted in purple?

carpals

How does an antibiotic act as a selective agent in promoting bacterial resistance?

Bacteria with a random mutation that allows resistance to that antibiotic are able to survive exposure and reproduce, passing the resistance mutation on to subsequent generations of bacteria.

Natural selection occurs when

a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.

Which organism had upper forelimb bones shortened and long, flipper-like phalanges?

whale

Which letter(s) represent ribosomes?

B, G

In the "Sampling Surfaces" lab, which of the following had NO bacterial growth?

liquid from can

Which of the following structures is found external to the cell (plasma) membrane and provides additional support?  It is found in most prokaryotes and in plant cells but not animal cells.

cell wallWhich structure is used by some cells for movement?

Which structure is used by some cells for movement?

flagellum

In the "Sampling Surfaces" lab, which had the greatest number of bacterial colonies?

money

Which of the following letters represents the flagellum?

A

Bacteria living on/in the human body outnumber human body cells by a ratio of

10:1

In the "Sampling Surfaces" lab exercise, why was the liquid in the can found to be free of microbes?

Canned liquids like juice or soda are prepared to be free of microbial contamination.

Which of the following represents the vibrios shape of bacteria?

D

Which is NOT true of a eukaryotic cell?

they are simpler than prokaryotic cells

Match the bacterial shape with it's description.

A - bacillus

B- cocci
C- spirillum (spirochete)

Which of the following letters represents the eyespot?

B

Which of the following domains consists of ONLY prokaryotic organisms?

both Bacteria and Archaea

A __ is a protein structure that supports the cell membrane of some protists.

pellicle

Which of the following letters represents the nucleus?

E

Which of the following represents rod-shaped bacteria?

B

Gymnosperm means "naked seed."

true

Which of the following evolved FIRST?

bryophytes

The leaf of a fern is referred to as a __________.

frond

A moss would be an example of a _________.

bryophyte

The earliest plants were terrestrial, and later descendants moved into the water.

false

Which of the following types of plants require water for sexual reproduction? (choose all that apply)

ferns, mosses

Which of the following types of plants require water for sexual reproduction? (choose all that apply)

ferns, mosses

Which of the following structures produces sperm in bryophytes?

antheridia

Which of the following best describes this plant?

seedless, nonvascular

The dominant generation in mosses is the gametophyte generation.

True

The figure on the left is _____, and the figure on the right is _____.

an archegonia and produces eggs; an antheridia and produces sperm

What is one of these structures on the back of the frond called and what does it produce?

sorus, spores

Xylem is responsible for conducting sugar and organic molecules within the plant.

False

Flower parts are in multiples of 3's.

monocot

Flowering plants are also called __.

angiosperms

Match the pollen cone structures in the image below.

A- pollen sac

B- pollen

C- cone axis

Which of the following is NOT a characteristic of a gymnosperm?

flowers

In the conifer life cycle, the __ is the sporophyte (dominant) generation.

adult tree

Identify the anther.

F

Flower parts in multiples of 4's or 5's.

dicot

They usually have a tap root.

dicot

Which type of plant is represented in the image below?

Gymnosperm

__ are minute pores in the epidermis of leaves and herbaceous stems that permit gas exchange and transpiration.

stomata

Which structure grows down through the style and delivers the sperm to the ovule?

pollen tube

A crayfish is an example of which animal phylum?

Arthropoda

Which of the following is NOT a characteristic of animals?

autotrophic

Which phylum would this animal belong to?

Echinodermata

Which of the following describe an animal that has no central, fluid-filled cavity?

 

acoelomate

Animals in this class produce milk in mammary glands and have hair.

Mammalia

Which phylum would this animal belong to?

Mollusca

Humans are a member of which animal phylum?

Chordata

Which of the following are members of class Reptilia? (choose all that apply)

 (everything but frogs)

lizards

 

birds

 

snakes

 

alligators

Which of the following classes of animals are all endothermic? (choose all that apply)

Mammalia

Bony fish are members of which class of chordates?

Osteichthyes

Salamanders and frogs are examples of animals in the class _______.

Amphibia

Which animal phyla has no tissues?

Porifera

True or False:  Amphibians have internal fertilization.

False

Feeding appendages of Crayfish are called

maxillipeds

What part of the crayfish is seen here?

heart

Frogs belong to the phylum

Chordata

Which letter represents the stomach?

D

Which of the following that is common to frogs AND mammals? (choose all that apply)

tetrapoda

closed circulatory system

complete digestive tract

Eustachian tubes serve which of the following functions?

equalize pressure in the ears

What organ is shown here?

heart

Which of the following is a characteristic of an arthropod?

they have an exoskeleton

The green glands are associated with which system?

excretory

What part of the frog is this?

Ovaries

Which of the following are characteristics of the class amphibia?

all of these are characteristics of amphibians

Which letter represents the tympanic membrane?

C

The cephalothorax is represented by which letter?

A

Amphibians have a __ chambered heart.

3

Which letter represents the liver?

C

The nares contain what type of sensory receptors?

chemoreceptors

Anterior section of the exoskeleton of Crayfish covering the cephalothorax region is called the

carapace