The portion of the bacterial structure that is thick and sticky plus traps water in to prevent dehydration

QUESTION 1

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  1. Whether the external temperature is hot or cold, birds maintain an internal body temperature of approximately 40°C. This is an example of

 

proteomics.

 

homeostasis.

 

growth and development.

 

cellular respiration.

 

metabolism.

2 points   

QUESTION 2

  1. Which level of organization is common to all life forms?

 

tissue

 

organism

 

organ

 

population

 

cell

2 points   

QUESTION 3

  1. Proteins are largely responsible for the traits of living organisms while ________ provides the blueprint for the organization, development, and function of living things.

 

carbohydrate

 

DNA

 

protein

 

lipid

 

metabolite

2 points   

QUESTION 4

  1. A community of organisms interacting with their physical environment is a(n)

 

macromolecular community.

 

population.

 

ecosystem.

 

organism.

 

biosphere.

2 points   

QUESTION 5

  1. In the process of biological evolution, new species may evolve through exchange of genes from one species to another. This process is called

 

proteome transfer.

 

horizontal gene transfer.

 

vertical descent with mutation.

 

genomic sciences.

 

vertical evolution.

2 points   

QUESTION 6

  1. Which domain of life contains the most multicellular organisms?

 

Bacteria

 

Eukarya

 

Prokarya

 

Archaea

 

Microorganisms

2 points   

QUESTION 7

  1. All organisms in the Kingdom ________ can perform photosynthesis.

 

Animalia

 

Fungi

 

Bacteria

 

Protista

 

Plantae

2 points   

QUESTION 8

  1. An example of one of the ways a pH buffer helps to maintain homeostasis is to

 

reduce the H+ concentration if pH increases.

 

increase the H+ concentration if pH decreases.

 

reduce the H+ concentration if pH decreases.

 

reduce the OH- concentration if pH decreases.

 

increase the OH- concentration if pH increases.

2 points   

QUESTION 9

  1. If orange juice has a pH of 4 then it can be described as

 

an acidic solution with a H+ concentration of 4.

 

 an acidic solution.

 

an alkaline solution.

 

having a H+ concentration is 4.

 

None of these choices are correct.

2 points   

QUESTION 10

  1. Carbon has 4 electrons and hydrogen has 1 electron in its outermost electron shell. A carbon atom can form covalent bonds with how many hydrogen atoms?

 

1.

 

3.

 

4.

 

2.

 

0.

2 points   

QUESTION 11

  1. What type of bonds form from the unequal sharing of electrons?

 

polar covalent

 

nonpolar covalent

 

ionic

 

electrostatic

 

hydrogen

2 points   

QUESTION 12

  1. Which is not a lipid?

 

Triglycerides

 

Phospholipids

 

Glycogen

 

Cholesterol

 

Steroids

2 points   

QUESTION 13

  1. The key structural difference between DNA and RNA is

 

DNA contains a different sugar than RNA.

 

RNA is a polymer, but DNA is not.

 

RNA is a double helix, but DNA is not.

 

RNA is a protein, while DNA is a nucleic acid.

 

All the bases in DNA differ from those in RNA.

2 points   

QUESTION 14

  1. An amino acid is to a protein as a ________ is to a nucleic acid.

 

fatty acid

 

nucleotide

 

glucose

 

cellulose

 

glycerol

2 points   

QUESTION 15

  1. The sequence of amino acids in a protein is its ________ structure.

 

hepternary

 

tertiary

 

quaternary

 

secondary

 

primary

2 points   

QUESTION 16

  1. A disaccharide, such as maltose, consists of two molecules of glucose linked by what type of bond?

 

Steroid

 

Glycosidic

 

Phosphodiester

 

Hydrogen

 

Peptide

2 points   

QUESTION 17

  1. Glycogen is to animal cells as ________ is to plant cells.

 

lipid

 

starch

 

protein

 

cellulose

 

sugar

2 points   

QUESTION 18

  1. Which of the following correctly describes bases that pair with each other in the DNA double helix?

 

Cytosine bonds with guanine

 

Adenine bonds with guanine.

 

Guanine bonds with thymine.

 

Thymine bonds with cytosine.

2 points   

QUESTION 19

  1. The nucleus is to eukaryotes as the ________ is to prokaryotes.

 

RNA strand

 

nucleoid

 

nucleolus

 

plasmid

 

ribosome

2 points   

QUESTION 20

  1. Prokaryotic cells are simple in structure and lack a membrane bound _______________.

 

Cytoplasm

 

Nucleus

 

Pili

 

Cell Wall

2 points   

QUESTION 21

  1. The portion of the bacterial structure that is thick and sticky plus traps water in to prevent dehydration is the ________________.

 

Cell Wall

 

Cytoplasm

 

Cell Membrane

 

Glycocalyx

2 points   

QUESTION 22

  1. Which cell type exhibits extreme compartmentalization, offering special functions? 

 

Eukaryotic Cells

 

Prokaryotic Cells

 

Bacterial Cells

 

Archaea Cells

2 points   

QUESTION 23

  1. The organelles most likely to have to ability to divide and reproduce themselves like a cell would be

 

mitochondria, chloroplasts, and lysosomes.

 

mitochondria only.

 

both mitochondria and chloroplasts.

 

chloroplasts only.

 

peroxisomes only.

2 points   

QUESTION 24

  1.  Plant cells burst in a hypotonic environment?

 True

 False

2 points   

QUESTION 25

  1. A cell containing 10g of sugar, in a solution containing 10g of sugar is in what type of environment?

 

Hypertonic

 

Hypotonic

 

Isotonic

 

Polatonic 

2 points   

QUESTION 26

  1. A cell containing 10g of sugar, in a solution containing 9g of sugar is in what type of environment? Which direction will the water move

 

Hypertonic, In of the cell

 

Hypotonic, Out of the cell

 

Hypotonic, In the cell

 

Hypertonic, Out of the cell

2 points   

QUESTION 27

  1. Hormones are released from one cell and act on other cells in distant organs. This is an example of

 

autocrine signaling.

 

contact-to-contact signaling.

 

intercellular signaling.

 

paracrine signaling.

 

endocrine signaling.

2 points   

QUESTION 28

  1. Photosynthesis is an endergonic process.

 True

 False

2 points   

QUESTION 29

  1. Exergonic reactions provide energy for endergonic reactions.

 True

 False

2 points   

QUESTION 30

  1. Substrates are specific to enzymes.

 True

 False

2 points   

QUESTION 31

  1. Which process produces no ATP?

 

oxidative phosphorylation

 

citric acid cycle

 

glycolysis

 

breakdown of pyruvate

2 points   

QUESTION 32

  1. Where does glycolysis occur?

 

mitochondrial intermembrane space

 

mitochondrial matrix

 

cytosol

 

mitochondrial inner membrane

2 points   

QUESTION 33

  1. Which process will occur in the presence or absence of oxygen?

 

citric acid cycle

 

glycolysis

 

oxidative phosphorylation

 

electron transport chain

2 points   

QUESTION 34

  1. In aerobic cellular respiration, what is the final electron acceptor? 

 

Ferredoxin 

 

H2O

 

O2

 

ATP

2 points   

QUESTION 35

  1. The main structure for gas exchange in plants is called the

 

mesophyll.

 

chloroplast.

 

root.

 

epidermis.

 

stomata.

2 points   

QUESTION 36

  1. In which organelle of the plant does photosynthesis takes place?

 

thylakoid membrane

 

grana

 

chloroplast

 

mesophyll

 

mitochondria

2 points   

QUESTION 37

  1. Which of the following bases bind to guanine in RNA?

 

thymine

 

cytosine

 

uracil

 

adenine

 

guanine 

2 points   

QUESTION 38

  1. Crossing over occurs during which stage of meiosis?

 

Prophase I

 

Metaphase II

 

Metaphase I

 

Prophase II

2 points   

QUESTION 39

  1. What is the role of DNA ligase?

 

to synthesize the RNA primer sequence

 

to synthesize the lagging strand during DNA replication

 

to unwind the DNA double helix

 

to seal the gaps in the sugar-phosphate backbone

2 points   

QUESTION 40

  1. What determines the sex of human offspring?

 

temperature

 

the egg cell

 

the sperm cell

 

timing

2 points   

QUESTION 41

  1. A diploid individual has __ alleles for any given gene.

 

one

 

two

 

three

 

four

 

more than four

2 points   

QUESTION 42

  1. How many chromosomes are in the sperm cells of the human body?

 

2

 

23

 

46

 

44

2 points   

QUESTION 43

  1. Codons are in groups of _________?

 

1

 

2

 

3

 

4

2 points   

QUESTION 44

  1. Which enzyme adds nucleotides to the newly synthesized DNA strand during replication?

 

DNA Polymerase

 

DNA helicase

 

RNA Polymerase

 

DNA topoisomerase

2 points   

QUESTION 45

  1. Which of the following bases bind to thymine in RNA?

 

thymine

 

guanine 

 

adenine

 

cytosine

 

uracil

2 points   

QUESTION 46

  1. The physical appearance of an organism for any given trait is known as its _________.

 

dominant

 

phenotype

 

alleles

 

genotype

2 points   

QUESTION 47

  1. When does DNA replication occur?

 

S phase

 

G2 phase

 

G1 phase

 

Prophase

2 points   

QUESTION 48

  1. How many copies of a recessive allele must be present to express the recessive trait?

 

0

 

1

 

2

 

3

2 points   

QUESTION 49

  1. How many chromosomes are in the somatic cells of the human body?

 

23

 

44

 

2

 

46

2 points   

QUESTION 50

  1. Which type of cells undergo binary fission?

 

somatic cells

 

germ cells

 

eukaryotic cells

 

prokaryotic cells