Excelsior HSC105 Module 2 Assignment Quarterly Exam #1 2021

Question 1 Which choice below is one of the waste products of cellular respiration?

hydrogen

 

ATP

 

ADP

 

carbon dioxide

 

Question 2 How many electrons are located in the first shell orbiting the nucleus?

 

2

 

4

 

6

 

8

Question 3 Which elements make up carbohydrates?

 

carbon, nitrogen, chlorine

 

oxygen, calcium, nitrogen

 

carbon, hydrogen, oxygen

 

oxygen, hydrogen, nitrogen

 

Question 4 Which elements make up approximately 96% of the human body?

carbon, hydrogen, nitrogen, oxygen

 

carbon, sulfur, phosphorus, calcium, magnesium

 

magnesium, oxygen, carbon, sodium, potassium, nitrogen

 

carbon, nitrogen, magnesium, sodium, sulfur

 

Question 5 Which choice below represents a control system that is always inhibitory?

 

Negative feedback

 

Positive feedback

 

Amplification feedback

 

Trigger feedback

Question 6 Which formula represents a covalent bond?

 

H2O

 

CaCl2

 

NaCl

 

Ca+

 

What is anaplasia?

 

The failure of cells to differentiate into a specialized cell

 

A benign tumor growth process

 

An abnormal change in organization of cells in a tissue

 

A process that causes nearby cells to die

 

Question 8 Which important function do cilia on the surface of respiratory columnar cells provide?

 

 Produce proteins for the cell membrane

 

Sweep materials across the cell surface

 

Produce lipids for the cell membrane

 

Increase the surface area of the membrane

 

Question 9 What is overall nature of the plasma membrane?

 

Hydrophobic

 

Hydrophilic

 

Denatured

 

Single-layered

 

Question 10 What type of cells secrete mucus and sweat?

 

immune cells

 

gland cells

 

muscle cells

 

nerve cells

Question 11 Which organelle sweeps bacteria and other foreign materials across respiratory cell surfaces?

 

Microvilli

Flagella

 

Cilia

 

Lysosomes

Question 12 Which process do most cells use to take in sodium ions?

 

pinocytosis

 

osmosis

 

phagocytosis

 

facilitated diffusion

Question 13  What is the formula for a sodium ion?

 

Ca+

 

Na+

 

Cl-

 

K+

Question 14 What gives an atom the ability to bond?

 

ions

 

protons

 

neutrons

 

electrons

Question 15 Which type of plane would divide the body into equal left and right halves?

 

Midsagittal

 

Coronal

 

Transverse

 

Oblique

Question 16 What increases the hydrogen concentration in a solution?

 

ion

 

buffer

 

base

 

acid

 

Question 17 What is the term for a substance made of two or more elements joined by a chemical bond?

 

atom

 

compound

 

complex element

 

ion

Question 19 Which group contains fatty acids??

 

amino acids

 

proteins

 

triglycerides

 

carbohydrates

 

Question 20 What choice minimizes the changes in pH?

 

covalent bond

 

enzyme-catalyst reaction

 

ionic bond

 

buffer system

Question 21 Which bond is described by a transfer of electrons between atoms?

 

ionic

 

covalent

 

disulfide

 

hydrogen

Question 22 When is an element neutral?

 

when protons outnumber neutrons

 

when proton and neutron numbers are equal

 

when neutrons outnumber protons

 

when electron and proton numbers are equal

 

Question 23 Which pH is the weakest acid?

 

2.3

 

5.8

 

8.0

 

9.6

Question 24 The number of which particle determines an element's identity?

 

atoms

 

electrons

 

neutrons

 

protons

Question 25 Which inorganic molecules are involved in cell respiration?

 

DNA

 

free fatty acids

 

oxygen and carbon dioxide

 

protein

 

Question 26 What has no charge and is found within the nucleus of an atom?

 

element

 

proton

 

neutron

 

electron

 

Question 27 What is the correct sequence for the process of mitosis?

 

prophase, metaphase. anaphase, telophase

 

metaphase, anaphase, telophase, prophase

 

anaphase, telophase, prophase, metaphase

 

telophase, prophase, metaphase, anaphase

Question 28 This organelle is responsible for packaging proteins.

 

golgi apparatus

 

mitochondria

 

proteasomes

 

ribosomes

 

Question 29 What is the body’s way of replacing dead or damaged cells?

 

Meiosis

 

Mutation

 

Mitosis

 

Apoptosis

Question 30 In which phase of mitosis do pairs of chromatids line up at the equator of the cell?

 

Prophase

 

Metaphase

 

Anaphase

 

Telophase

 

Question 31 What part of the cell acts as the control center for cellular functions?

 

nucleolus

 

nucleus

 

RNA

 

Codon

Question 32 Which process is also known as "cell-drinking"?

 

Phagocytosis

 

Pinocytosis

 

Active transport

 

Filtration

 

Question 33 This process produces gametes.

 

Prophase

 

Meiosis

 

Metaphase

 

Telophase

Question 34 This process is normal for cells when they come to the end of their life cycle.

 

apoptosis

 

dysplasia

 

neoplasia

 

anaplasia

Question 35 During which phase does DNA replication occur?

 

interphase

 

prophase

 

metaphase

 

telophase

Question 36 What provides stability in cell membranes by decreasing the fluidity of the membrane?

 

Phospholipids

 

Oligosaccharides

 

Cholesterol

 

Nucleus

 

Question 37 What is one of the functions of protein in cell membranes?

 

Synthesize other proteins

 

Form channels for transport

 

Restrict passage of fluid into the cell

 

Prevent binding of antigens

 

Question 38 How many chromosomes are present in an adult human cell? 

 

23

 

46

 

24

 

48

 

Question 39 What is the name of the process by which large molecules are packaged and transported out of a cell?

 

exocytosis

 

endocytosis

 

pinocytosis

 

pinoextosis

Question 40 What is a characteristic of cell membranes?

 

Impermeable

 

Made of phospholipids

 

Has 4 layers

 

Soluble