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Biology Exam Complete Questions And Answers 100% A+ Graded

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BIOLOGY EXAM COMPLETE QUESTIONS AND ANSWERS 100% A+ GRADED Hydrolysis - ANSWER Type of chemical reaction where water is added to a polymer and used to break (lyse) it into 2 monomers. Monosaccharide - ANSWER Monomer of carbohydrate, i.e. glucose. Amino acid - ANSWER Monomers of proteins; there are 20 different ones. Nucleotide - ANSWER Monomer of nucleic acids that consist of a sugar, phosphate, and a base. Catalyst - ANSWER A substance that enables a chemical reaction to proceed at a faster rate. Concentration - ANSWER The measure of the amount or proportion of a given substance when combined with another substance. Enzyme - ANSWER A protein that increases the rate of a chemical reaction without being changed by the reaction; an organic catalyst; usually ends in -ase. Adhesion - ANSWER The attraction between molecules of different substances due to the polarity of water Cohesion - ANSWER The attraction between water molecules due to the polarity of water pH scale - ANSWER The measure of acidity or alkalinity (basicity) of an aqueous solution scaling from 1 (highly acidic) to 14 (highly alkaline) with a midpoint of 7 (neutral). Specific heat - ANSWER The measure of the heat energy required to increase the temperature of a unit quantity of a substance by a certain temperature interval. Element - ANSWER A substance consisting of only 1 type of atom. Compound - ANSWER A set of atoms that combine in definite proportions, i.e. H2O. Polarity - ANSWER Major property of water which is due to the unequal distribution of charge. Water itself is neutral, but the oxygen atom has a slightly negative charge while the hydrogens have a slightly positive charge-polarity causes hydrogen bonds. Hydrogen bond - ANSWER Special bond that is formed due to polarity (unequal distribution of charge); found between water molecules, proteins, and DNA molecules. Ionic bond - ANSWER Type of chemical bond where electrons are transferred from one atom to another, creating ions (charged particles). Covalent bond - ANSWER A chemical bond where electrons are shared. Surface tension - ANSWER Property of water caused by cohesion occurs when water is attracted to itself Capillary action - ANSWER Property of water caused by adhesion occurs when water is attracted to other molecules Solvent - ANSWER Part of a mixture that does the dissolving. Solute - ANSWER Part of a mixture that gets dissolved. Solution - ANSWER A homogenous mixture where solute and solvent are evenly mixed. Valence electrons - ANSWER Outer-most electrons of an atom that participate in bonding. Organic molecule - ANSWER A molecule containing carbon.

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BIO EXAM COMPLETE QUESTIONS
AND SOLUTIONS
DETAILED TEST A+ GRADED
When cell is making gametes, because it is already haploid is used: - ANSWER ✔ Mitosis cell
division

Multicellular dependent embryo - ANSWER ✔ When the zygote is formed it sits inside the
plant. Sort of like mammals.

Zygote is the fusion of: - ANSWER ✔ A sperm and egg

The walled spores are produces in the: - ANSWER ✔ Sporangia

When the spores are mature the sporangia bursts open and: - ANSWER ✔ The spores are
released into the air.

In plants the multicellular gametangia: - ANSWER ✔ Produces the gametes

What gametangia produces the egg? - ANSWER ✔ Archegonium

What gametangia produces the sperm? - ANSWER ✔ Antheridium

What is the process called for plants growing longer? - ANSWER ✔ Apical meristems

Meristems are the only tissue capable of: - ANSWER ✔ Cell division

What is another term for nonvascular plants? - ANSWER ✔ Bryophytes

Nonvascular plants do not have what? - ANSWER ✔ Don't have specialized tissues to deliver
fluids from place to place.

How many types of gametophytes are there and what are there names? - ANSWER ✔ 2- the
male and female gametophyte.

What is found on the top of the male gametophyte? - ANSWER ✔ Antheridia.

What produces in the Antheridia? - ANSWER ✔ Large amounts of sperm

What forms on top of the female gametophyte? - ANSWER ✔ Archegonia.

, What produces in each archegonia? - ANSWER ✔ One egg

Why do Moses have to live in a film of water? - ANSWER ✔ So sperm can swim thru the
water.
Land plants evolved from: - ANSWER ✔ Green algae

In what ways are the structures of the green algae and the land plant the same? - ANSWER ✔
Multicellular, eukaryotic, photosynthetic, & autotrophs.

Land plants and green algae have the same cell walls made up of what? - ANSWER ✔
Cellulose which stiffens up the cell wall.

What kind of photosynthesis chlorophyll are similar in green algae and land plants? - ANSWER
✔ Chlorophyll a & b.

What is the phylum for green algae? - ANSWER ✔ Chlorophyla

What is the class of green algae? - ANSWER ✔ Charophytes

Chara - ANSWER ✔ Looks like a plant with a stem. Used in an aquarium at home.

Covio keet - ANSWER ✔ Big green disk that floats in the water.

Have to produce cellulose to create: - ANSWER ✔ Cell walls

Proteins in charophytes and plants are arranged in what type of structure? - ANSWER ✔ A ring
structure on the surface of a membrane.

The structure of the flagellated sperm in land plants and charophytes are: - ANSWER ✔ Similar

Phragmoplasts are: - ANSWER ✔ A rigid cell plate that is created after the nuclei separates.

Once phragmoplasts form then cellulose begins to: - ANSWER ✔ Accumulate on either side of
the phragmoplasts. Which becomes the new cell wall.

Phragmoplasts show the cellulose were to: - ANSWER ✔ Form

Plants and charophytes have: - ANSWER ✔ Phragmoplasts

Sporopoletin is found on: - ANSWER ✔ Outer layer of pollen & outer layer of spores on
SOME plants & spores on charophytes.

Sporopoletin is: - ANSWER ✔ A molecule and immortal. Nothing can break it.

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