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Endterm_ Gen Bio1_12STEM2502_ long quiz

Total questions: 30

Worksheet time: 15mins

Name
Class
Date
1.

What type of biomolecule is an enzyme?

a)

CARBOHYDRATES

b)

PROTEINS

c)

LIPIDS

d)

NUCLEIC ACID

2.

1What is the process called when a protein loses its functional shape due to changes in temperature or pH?

a)

Denaturation

b)

Hydrolysis

c)

Dehydration Synthesis

d)

Phosphorylation

3.

What is the primary structure of a protein?

a)

Its three-dimensional shape

b)

The interaction between multiple polypeptide chains

c)

The folding pattern of the polypeptide chain

d)

The sequence of amino acids

4.

Which enzyme specifically breaks the  glycosidic bond in amylose found in starch?

a)

CELLULOSE

b)

PEPTIDE BOND

c)

AMYLASE

d)

DENATURATION

5.

The primary structure of a protein is determined by its sequence of  nucleotides.

a)

TRUE, The primary structure of a protein is determined by its sequence of  nucleotides.

b)

FALSE, Nucleotides are the building blocks of nucleic acids like DNA and RNA.

c)

TRUE, The secondary structure of a protein is formed by hydrogen bonds between the backbone atoms in the polypeptide chain.

d)

False, the tprimary structure of a protein is determined by interactions between the side chains

6.

Which lipid component is crucial in maintaining the fluidity of cell  membranes in animal cells?

a)

Cholesterol

b)

Glycolipids

c)

Triacylglycerol

d)

Lipoproteins

7.

Why does drinking enough glasses of water important for metabolism?

a)

Water molecule is used to break the  bond to ATP to release energy

b)

Water hydrates the arteries and veins

c)

Water allows the entry of hydrogen molecules to the membranes

d)

water effectively delivers the ATP to their places like the muscles

8.

This refers to any reaction that break down complex molecules into a smaller molecules.

a)

Anabolism

b)

Carboxylation

c)

Phosphorylation

d)

Catabolism

9.

ATP is composed of three phosphate group and Adenine, what connects this two molecules?

a)

Ribose sugar

b)

Polysaccharides

c)

Glucose

d)

Peptide bonds

10.

What type of bond holds the secondary structure of a protein, such as alpha helices and beta-sheets, together?

a)

Ionic bond

b)

Peptide Bond

c)

Disulfide bond

d)

Hydrogen bond

11.

What is the process called when a protein loses its functional shape  due to changes in temperature or pH?

a)

Hydrolysis

b)

Denaturation

c)

Phosphorylation

d)

Photolysis

12.

He did an experiment in a willow tree and found out the plants grow due to water uptake of plant.

a)

Jan Bapista van Helmont

b)

Joseph Priestly

c)

Jan Ingenhousz

d)

Jendrassik and Lohmann

13.

This is a process of breaking down molecules of lactose into galactose and glucose.

a)

Denaturation

b)

Dehydration Synthesis

c)

Hydrolysis

d)

Photolysis

14.

Caterpillars has an enzyme that can digest cellulose present in plants, what do you call this?

a)

Amylose

b)

Lipase

c)

Cellulase

d)

ATP Synthase

15.

Complete the equation for photosynthesis.

a)

P680

b)

CO2

c)

H20

d)

O2

16.

Where in the chloroplast do the light-dependent reactions take place?

a)

Lumen

b)

Thylakoid

c)

Chlorophyll

d)

Stroma

17.

What is the primary role of Photosystem II in the light-dependent reactions?

(the immediate by product of light reaction)

a)

ATP synthesis

b)

carbon dioxide fixation

c)

NADPH production

d)

Water splitting and oxygen 

release

18.

As the electron moves from the ETC it looses energy. To store the energy of excited electrons it pump Hydrogen ions from ___________ and into ___________

a)

outside the cell to stroma

b)

Stroma to thylakoid space

c)

Thylakoid space to Stroma

d)

intermembrane compartment to chlorophyll

19.

What type of vascular tissues allow the movement of water molecules from the roots through the leaf of plants?

a)

Xylem

b)

Phloem

c)

Capillary tube

d)

Root vein

20.

What part of the leaf allows the entry of Carbon dioxide and exit of water molecules and oxygen

a)

Stroma

b)

Stomata

c)

Mesophyll

d)

Phloem

21.

True pr False: Oxygen is produces as a by product during the light dependent reaction of photosynthesis

a)

False, Oxygen is produced as a by-product during the Calvin Cycle.

b)

True, because it is produced during photolysis

c)
  1. False, Oxygen is produced directly from the splitting of carbon dioxide molecules.

d)

True, Oxygen production occurs in the stroma of the chloroplast.

22.

What do you call the process of adding another Phosphate to Ru5P to convert it to RuBP?

a)

Carboxylation

b)

Phosphorylation

c)

Photophosphorylation

d)

Photolysis

23.

True or False: Carbon dioxide is the primary input for the light-independent reactions in photosynthesis.

a)

False, Carbon dioxide is not necessary for the light-independent reactions in photosynthesis

b)

False, The light-independent reactions can proceed without any carbon dioxide.

c)

True, Carbon dioxide is only involved in the light-dependent reactions.

d)

True, carbon dioxide together with ATP and NADPH is needed to form glucose

24.

What do you call the characteristics of a phospholipid that contains both hydrophilic and hydrophobic components?

a)

Apoptosis

b)

Catalitic

c)

Amphipathic

d)

Semi - permeable

25.

The flexibility of the plasma membrane is mainly due to which component that prevents tight packing of phospholipids?

a)

Carbohydrate Chain

b)

Cholesterols

c)

Saturated fatty Acids

d)

Protein Channel

26.

A cell in a hypertonic solution will most likely:

a)

Gain Water and Burst

b)

Lose water and shrink

c)

remain unchanged

d)

absorbs solutes rapidly

27.

Which protein structure is responsible for cell recognition such as determining blood type?

a)

glycoproteins

b)

glycogens

c)

channel proteins

d)

enzymes

28.

Which enzyme is responsible for breaking down hydrogen peroxide?

a)

protease

b)

catalase

c)

lipase

d)

amylase

29.

which transport mechanism allows hormones to be secreted from a cell?

a)

phagocytosis

b)

exocytosis

c)

pinocytosis

d)

endocytosis

30.

Which of the following is least likely to pass through the lipid bilayer without assistance?

a)

oxygen

b)

carbon dioxide

c)

glucose

d)

small lipids