Biology Questions

1 A 25 5 liter balloon holding 3 5 moles of carbon dioxide leaks If we are able to determine that 1 9 moles of carbon dioxide escaped before the container could be sealed what is the new volume of the container 2 If Sample 1 contains 2 98 moles of hydrogen at 35 1 degrees C and 2 3 atm in a 32 8 L container How many moles of hydrogen are in a 45 3 liter

7 Rheumatoid Arthritis usually affects joints bilaterally i e both the right and left wrist whereas Osteoarthritis often affects joints on one side only i e only the right wrist in someone right handed For both diseases explain why

8 A 5 year old male is diagnosed with Duchenne muscular dystrophy DMD Using your own words describe in detail what causes this disease AND its symptoms

It is recommended that all breastfed babies receive a daily vitamin D supplement a What disorder does this help prevent b How does vitamin D prevent this disorder

5 When skin is exposed to sunlight it tans Explain how tanning occurs and what the purpose is of this mechanism

2 Our bodies have several different buffering systems Explain a what buffers do and b why that function is essential for our bodies

Question 9 of 10 Which statement best describes the second step of primary succession A Shade tolerant seedlings grow into trees that block out the sunlight B Mosses begin to grow and add nutrients and nitrogen to the soil C Grasses and perennials begin to grow D Lichens begin to grow and break down rock to form soil SUBMIT

Which of the following choices is quickly becoming the second leading cause of disease and death in the United States alcohol abuse HIV AIDS obesity drug abuse

Vertebrata Class Ch Vertebrata Class Mammalia Select correct subphylum class of Chordata Vertebrata Class Crocodilia Urochordata Cephalochordata Vertebrata Class Crocodilia Vertebrata Class Agnatha Vertebrata Class Aves Vertebrata Class Mammalia Vertebrata Class Chondrichthyes Vertebrata Class Amphibia Vertebrata Class Osteichthyes Vertebrata Class Testudines Select correct subphylum class of Chordata hyes

1 Genus species of bird 2 Common name 3 Protection status and habitat

In a diploid species of plant the genes for plant height and fruit shape are syntenic and separated by 18 m u Allele D produces tall plants and is dominant to d for short plants and allele R produces round fruit and is dominant to r for oval fruit The expected percentages of progeny phenotypes are listed below tall oval 41 short round 41 tall round 9 short oval 9 a What proportion are expected to be tall and produce round fruit

A B C D anterior adductor muscle anterior foot retractor muscle gills posterior foot retractor muscle E posterior adductor muscle F mantle labial palps foot DE Name of structure Identified G H Function of Structure Identified

Name of Structure A stomach B C D E F G anus tube feet radial canal ring canal mouth digestive glands Function of Structure

External Anatomy A B C D EF F G LL F G H A I spiracle spine 1st dorsal fin external nares 2nd dorsal fin select answer lateral line B J H I K Figure 1 External features OJ OK OL M C ON M L D mouth select answer rostrum pectoral fin clasper select answer caudal fin E N 1st dorsa clasper 2nd dors spine perivic fla spiracle caudal fis rostrum lateral lin external pectoral

What type of B cell leaves the bone marrow ALT F10 PO ALT EN F10 Mac

Taking into account the selection process of developing T cells in the thymus why would somatic hypermutation in the genes of the TCR not be beneficial remember that somatic hyper For the toolbar press ALT F10 PC or ALT FN F10 Mac T Y no d E

Question 15 What is the difference between a primary immune response initial exposure to an antigen and a secondary immune response second exposure to same antigen of adaptive immunity you p The primary immune response is the inital exposure to a certain antigen and occurs when it is first encountered For the toolbar press ALT F10 PC or ALT FN F10 Mac This response can take

Select correct subphylum class of Chordata Urochordata Cephalochordata Vertebrata Class Crocodilia Vertebrata Class Agnatha Vertebrata Class Aves Vertebrata Class Mammalia Vertebrata Class Chondrichthyes Vertebrata Class Amphibia Vertebrata Class Osteichthyes Vertebrata Class Testudines Select correct subphylum class of Chordata Select correct subphylum class of Chordata Select correct subphylum class of Chordata Select correct subphylum class of Chordata Select correct subphylum class of Chordata

Dissection 7 ABCDE select answer ovary testes stomach oviduct cloaca uterus select answer 4

Label the pictures below as male or female select sex select sex

External Anatomy AB A C CDE D LL F G F G H A select answer 1st dorsal fin clasper 2nd dorsal fin spine pertvic fin spiracle caudal fin rostrum ateral line external nares B ma K H I J C Figure 1 External features K L M M M D select answer select answer select answer select answer select answer select answer E N

Part 4 Bony Fish External Anatomy A B CDE C D EE E F GH H I A select answer dorsal fin caudal fin nostril pectoral fin anal fin lateral line operculum eye pelvic fin select answer select answer H I FI

A B C D E Fes select answer select answer gill heart gill rakers internal spiracle gill pouch select answer

Dissection 5 ABCO C D select answer select answer cloaca rectal gland colon A 4

Dissection 3 A B C D Cons select answer stomach pyloris ruggae esophagus select answer B D

ABC B select answer spiral valve duodenum valvular intestine select answer

Dissection 2 A alalu nlulu B C D E F C D select answer select answer select answer select answer select answer select answer B A E

Dogfish Internal Anatomy Features Dissection 1 ABC C Dissection 2 select structure peritoneum liver gall bladder select structure A B

A select answer anus stomach B C mouth DEE Name of Structure radial canal ring canal digestive glands F tube feet G D select answer select answer RR Y B F E G Function of Structure

A pea plant that has round seeds has the genotype Rr It is crossed with a pea plant that has wrinkled seeds and the genotype rr What is the probability that the offspring will have wrinkled seeds O 0 percent 25 percent O 50 percent O 75 percent

What alternate form of genes do nucleic acids have that allows them to offer variability allele O codon O nucleotide O chromosome

Onone ol Question 2 2 points di Listen In the apple experiment the boiled apple probably didn t turn brown Why the apple was sterilized by the boiling water O the cells were killed by the boiling water O tyrosinase cannot use hot water as a substrate the enzyme was denatured by high temperature Question 3 2 points Listen In the experiment where apples were soaked in bleach lemon juice or water what was the independent variable amount of browning

O A are mixotrophs OB are heterotrophic protists that decompose dead plants and animals in freshwater habitats OC are autotrophs with a glassy cell wall that contains silica OD include the malaria parasite Question 12 1 point Saved Listen Biologists think that endosymbiosis gave rise to mitochondria before plastids par whereas many

nd Time Left 0 09 3 O the enzyme was denatured by high t Question 3 2 points 4 Listen In the experiment where apples were soaked in bleach lemon juice or water what was the independent variable O amount of browning concentration of enzyme different pH solutions amount of bubbles O Question 4 2 points Listen In the potato juice experiment what enzyme was involved in the reaction hydrogen peroxide

most direct ancestors of land plants were probably OA green algae OB liverworts and mosses O C photosynthesizing prokaryotes cyanobacteria D kelp brown alga that formed large beds near the shorelines Question 10 1 point Saved Listen Double fertilization involves in ogs with 1 sperm to produce the embryo sac with the synergids

of the following statements about stomata is accurate A Stomata are not important in algae because they do not need CO2 B Stomata are important in terrestrial plants because they allow CO2 to diffuse into the plant C Stomata when closed allow CO to diffuse into plants D Stomata are important in terrestrial plants because they allow the roots to absorb water and nutrients from the soil Question 8 1 point Listen rm

ist discovers a new species of plant in a tropical rain forest Investigation of its anatomy and life cycle shows the following characteristics flagellated sperm xylem with tracheids separate gametophyte and sporophyte generations with the sporophyte dominant and no seeds This plant is probably most closely related to OA flowering plants O B ferns O C gymnosperms OD mosses

sly recognized similarities that seemed to connect slime molds and fungi are now considered to be OA adaptations for much different functions B variations of common ancestral traits C homologies OD examples of convergent evolution Question 19 1 point Saved

amount of bubbles Question 4 2 points 4 Listen In the potato juice experiment what enzyme was involved in the reaction hydrogen peroxide Ocatalase O tyrosinase Onone of the above Question 5 2 points Listen In the enzyme experiment what was the effect of placing the enzymes in the cold

Which of these events based on plant fossils came last most recently OA extensive growth of gymnosperm forests O B rise and diversification of angiosperms OC carboniferous swamps with giant horsetails and lycophytes OD colonization of land by early liverworts and mosses Question 5 1 point int in a tropical rain forest Investigation of flagellated sperm

Dinoflagellates are best described as o A large multicellular algae that resemble plants but do not have true leaves stems or roots B parasitic protozoans that must spend part of their life cycles in vertebrate hosts OC protozoans that use cila to move and feed D marine and freshwater algae that can produce harmful red tides

ered by Otrapping small prey with extensive mycelia forming vacuoles to ingest food particles secreting potent enzymes and then absorbing digested nutrients invading the tissues of host plants and using them for food Question 24 1 point 1 Listen Fungi are classified primarily on the basis of their feeding structures mode of nutrition

How are bryophytes and seedless vascular plants alike A In both groups sperm swim from antheridia to archegonia OB The dominant generation in both groups is the sporophyte OC Plants in both groups have true roots stems and leaves D Plants in both groups have vascular tissue 7 1 point

nodial slime molds O A contain many nuclei in one mass of cytoplasm OB are marine decomposers OC are photoautotrophic OD D are primitive fungi Question 18 1 point comed to connect slime molds and fungi are

group of fungi include species that are referred to as mushrooms Basidiomycota yeasts Chytrids Ascomycota Zygomycota Question 23 1 point Listen Most fungi typically feed by unning small prey with extensive mycelia corticles

The Eukaryotic supergroup Unikonta includes select all that apply red algae green algae slime molds plants animals fungi Question 16 1 point Listen llowing is a parasitic excavate that causes African sleeping sickness a

Oprokaryotes autotrophs Odecomposers Ophotosynthetic Question 21 1 point 4 Listen Which group of fungi include species that are often referred to as ma Chytrids yeasts

Which of the following is a parasitic excavate that causes African sleeping sickness a disease spread by the tsetse fly A Paramecium B Amoeba C Trypanosoma D Plasmodium 17 1 point

Previously recognized similarities that seemed to connect slime molds and fungi are now considered to be A adaptations for much different functions OB variations of common ancestral traits OC homologies D examples of convergent evolution

Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because O A all eukaryotes have mitochondria or their remnants whereas many eukaryotes do not have plastids OB the products of photosynthesis could not be metabolized without mitochondrial enzymes OC without mitochondrial CO2 production photosynthesis could not occur OD D mitochondrial DNA is less similar to prokaryotic DNA than is plastid DNA