Cell: The Unit of Life Questions and Answers

In terms of food capture which sponge cell is most similar to the cnidocyte of a cnidarian O amoebocyte Ospicule Ochoanocyte O epidermal cell

hat distinguishes a coelomate animal from a pseudocoelomate animal is that coelomates O have a complete digestive system with mouth and anus whereas pseudocoelomates have a digestive tract with only one opening have a gut that lacks suspension within the body cavity whereas pseudocoelomates have mesenteries that hold the digestive system in place Or O contain tissues derived from mesoderm whereas pseudocoelomates have no such tissue have a body cavity whereas pseudocoelomates have a solid body have a body cavity completely lined by mesodermal tissue whereas pseudocoelomates do not

OA white pigments in skin cells OB carotene from carrots and yellow vegetables OC melanin produced by skin cells OD red pigments in blood Question 18 1 point Listen The cells in this layer of epidermis are dead and their flat scale like remnants are filled with keratin OA stratum granulosum OB stratum spinosum OC stratum corneum

A Cardiac B Smooth OC Connective OD Skeletal Question 16 1 point 4 Listen Pressure receptors called lamellar Pacinian corpuscles are located in this layer of the integument OA epidermal stratum basale OB dermal papillary layer onidermal stratum spinosum

Match each part of the graph to its label on the following image E Solubility g per 100g of water 1 1 i Solubility g per 100g of water 40 39 38 35 34 33 VA VB VC VD VE C 0 10 20 30 A D 40 60 Temperature C 50 70 80 90 100 A data B title C y axis dependent variable D x axis independent variab E trend line

3 2 1 5 8 6 Cells from which area are collected for a pap smear 2 cervix 1 vaginal canal 2 uterus 1 cervix 8 endometrium

fertilization mitosis meiosis zygote sperm egg 2n n Group 2 Group 3 Group 2 Group 2 Group 2 Group 2 maternal parent Group 1 Group 1 female multicellular organism Group 1 paternal parent Group 1 b Group 3 Group 3 Group 3 Group 2 Group 3 Group 2

Drag the terms on the left to correctly complete these sentences Not all the terms will be used View Available Hint s centrosome s centromere s kinetochore s chromosome s sister chromatid s cytokinesis interphase mitotic spindle s chromatin 1 DNA replication produces two identical DNA molecules called mitosis 2 After chromosomes condense the are most tightly attached to each other 3 During mitosis microtubules attach to chromosomes at the 4 In dividing cells most of the cell s growth occurs during 5 The and plays a role in cell division is the region where the identical DNA molecules Reset Help 8 The during mitosis which separate during is a cell structure consisting of microtubules which forms during early mitosis 7 In most eukaryotes division of the nucleus is followed by divides 6 During interphase most of the nucleus is filled with a complex of DNA and protein in a dispersed form called when the rest of the cell are the organizing centers for microtubules involved in separating chromosomes

Which type of cells have mitochondria O plant cells O animal cells O yeast cells O plant animal and yeast cells O prokaryotic cells

10 Structure 2 Structure 3 Structure 6 12 11 13 Structure 11 14 15 B 16 17 www Peroxisome Centrioles Nucleus Choose Rough Endoplasmic Reticulur Golgi apparatus Choose AL Choose y

Which of the following molecules is most similar in structure to ATP a DNA nucleotide a pentose sugar an amino acid with three phosphate groups attached an RNA nucleotide

When a cell is in equilibrium with its environment which of the following processes occurs for substances that can diffuse through the plasma membrane All movement of molecules across the plasma membrane occurs by active transport There is random movement of substances into and out of the cell There is no movement of substances into or out of the cell There is directed movement of substances into and out of the cell

A controlled experiment includes at least two groups one differing from the other by two or more variables is repeated many times to ensure that the results are accurate includes one group for which the scientist controls all variables includes at least two groups one of which does not receive the experimental treatment

In comparison to eukaryotes prokaryotes Oare more structurally complex are smaller O are larger do not have membranes

is the function descripti 13 4 6 7 9 5 8 10 3 11 12 2 1 Pas 14 with 22 15 16 17 18 19 20 21 Braces and strengthens cell surface intracellular movement Maintain cell shape transportation inside of cells and resist mechanical forces The fluid region around centrioles Detoxify harmful or toxic substances Break down things with acid and degradative enzymes Overall cell shape and organelle distribution intracellular movement Generate ATP energy molecule through oxidative respiration Involved in cell division and forming part of the cytoskeleton Resist pulling forces on cell anchoring cells to one another O Increase the surface area of the cell

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

O A two clades of eukaryotes One that is related to animals and fungi and another that is related to plants B multiple clades of eukaryotes with some lineages more closely related to plants animals or fungi than they are to other protists O C a single clade of eukaryotes that are distantly related to animals OD two clades of eukaryotes algae and protozoans tion 14 1 point

Listen Green algae differ from land plants in that many green algae A have plastids OB have cell walls containing cellulose OC have alternation of generations OD are unicellular

Question 4 Listen The following question refers to the generalized life cycle the figure Each number within a circle or square represents a specific plan part and each number over an arrow represents meiosis mitosis or fertilization 20 6600 Ture which number represents the mature gametophyte

Blanching Cyanosis Sapphirosis Erythemia Question 33 2 points Listen The hypodermis acts as a shock absorber because it has no delicate nerve endings and can therefore absorb more shock O it is primarily composed of adipose tissue ate a protective mucus

fibroblast osteoblast hemocytoblast Question 30 2 points Listen Which layer of the epidermis is made up of stem cells that divide to produce m the cells of the epidermis Ostratum lucidum Ostratum corneum stratum granulosum

living cells lacunae blood vessels organic fibers Question 28 2 points Listen Match the connective tissue with its description A loose connective tissue with thin reticular fibers that form a mesh like stroma Consists primarily of closely packed parallel collagen fibers fibroblasts are the predominant cell type Gel like matrix with all three fiber types loose fibers with increased ground substance fibroblasts are the predominant cell type Consists primarily of closely packed irregularly arranged collagen fibers fibroblasts 1 Areolar connective tissue 2 Dense regular connective tissue 3 Dense irregular connective tissue 4 Reticular connective tissue

00 Menisci of knee vertebral discs and pubic symphysis Articular costal respiratory and nasal cartilages External ear and epiglottis Question 24 1 5 points 4 Listen Match the type of cartilage with its description The most abundant type of cartilage fine collagen fibers form an 1 Elastic cartilage 2 Fibrocartilage 3 Hyaline cartilage imperceptible matrix Cartilage with thick collagen fibers it has the greatest tensile strength Cartilage with shunda 1 Elastic cartilage 2 Fibrocartilage 3 Hyaline cartilage

They have a high regenerative capacity and can typically replace lost cells as long as they have adequate nutrition They exhibit polarity with an apical surface exposed to the exterior or a cavity and a lower basal surface Adjacent cells typically are bound together by gap junctions They are all avascular and supported by connective tissue Question 22 2 points 4 Listen Ductless glands that secrete their products directly into the blood are classified as glands O endocrine ceruminous exocrine

Decreased vitamin D synthesis Increased hair growth Increased oily appearance and more acne Increased cooling of the skin Question 18 2 points Listen ty causes which of the following What causes osteoporosis osteoclasts out pace osteoblasts often due to low hormone production of the ovaries poor posture abnormal PTH receptors

Wolff s law states that vertical growth of bones is dependent on age bones grow or remodel in response to the demands placed on it the ratio of osteoblasts to osteoclasts directly correlates with the diameter of the bone the function of bone is dependent on its shape

chondrocyte osteoclast osteoblast Question 11 2 points 10 Listen Which of the following is the first step in intramembranous ossification The cartilage matrix begins to deteriorate A bone collar forms around the cartilage model An ossification center forms in the fibrous connective tissue

cell types with their function Monitors and maintains the mineralized bone matrix Mitotically active stems cells that divide to produce new cells Synthesizes the bone matrix Resorbs the bone matrix 1 Osteoblast 2 Osteoclast 3 Osteocyte 4 Osteogenic cells

The periosteum covers all of the external surfaces of bones except for joint surfaces True False

Which structure allows long bones to continue to grow until the end of adolescence epiphyseal plate osteon lacuna eninhyseal line

Compact bone is covered on the outside by epiosteum enterosteum epichondrium endochondrium and on the inside by

Which layer s of tissue is are damaged in a second degree burn dermis both the epidermis and upper dermis the entire thickness of skin epidermis

Yellow bone marrow contains a large percentage of elastic tissue fat perforating fibers blood forming cells

DNA is located in the while the ribosomes are in the nucleus B cytoplasm C cell membrane

A Enzymes are made up of which are produced from the blueprint of DNA ONA B protein hydrogen bonds

deel 060 Which structures are highlighted O nuclei O goblet cells Omicrovilli O cilia Po 10

Figure 2 to the right contains Fig 1 as you can see Fig 3 tissue starting to A malignant tumors B benign tumors C Fig 2 normal tissue

Identify the organism shown here

Which cell is highlighted lymphocyte basophil neutrophil O monocyte

Which tissue is highlighted O elastic cartilage Odense regular elastic tissue O areolar connective tissue Ohyaline cartilage Submit Request Answer

Which structure is highlighted Oosteodast Otrabecula Onerve O blood vessel W

is are responsible for autophagy in the cell that happens during apoptosis A Lysosomes B Vesicles C Endomembrane system D Flagella

Most bacteria have an extra segment of chromosomal DNA called a that is in eukaryotes A codon C pili B plasmid D chloroplast

Which of the following is NOT true according to Cell Theory A All cells arise from pre existing living cells B All cells are roughly square in shape C All living organisms are composed of one or more living cells D The cell is the basic unit of life

When cell membranes form they have a polar head and a non polar tail This structure is called a n A phospholipid bilayer C infolding B organelle D nucleus

The ultimate tool to provide evidenc for evolution which Darwin did not have access to is A the fossil record C thermocyclers to incubate bacteria B molecular genetics or DNA technology D air travel

is that a cell pinched off and incorporated a more primitive cell which then functioned as an organelle A tenant of A spontaneous formation B cell fragmentation C endosymbiotic theory D exosymbiotic theory

Translation starts in the cytosol for all eukaryotic proteins encoded in genes from the cell s chromosomes but many of these proteins have functions in other locations requiring translocation across a membrane Match the final destination of a protein with the likely translocation mechanism during or after translation of that protein Plasma membrane protein Golgi protein functions inside golgi Cytosolic protein Nuclear Protein Choose Choose A Choose No translocation Post translational translocation Not a translated protein Co translational translocation