Plant Science Exam 1

The following activities are part of the scientific method. What is the last step usually followed by scientists?

-conduct many experiments

-develop a hypothesis

-interpret test results

-share the information with the scientific community

-recognize a problem or question about the natural world

Share the information with the scientific community

Deductive reasoning proceeds from specifics to generalities. 

True 

False

False

A(n)________ is a widely accepted explanation that is supported by a large body of observations and experiments.

theory

conclusion 

hypothesis

principle

theory

What is the discovery of general concepts by careful examination of specific cases called?

 Analysis

Inductive reasoning

Hypothesis

Deductive reasoning

Inductive Reasoning

The term that best defines good science is ________.

 

dynamic

dogmatic

static 

opinionated

dynamic

Some common elements found in plants are: 

C

Fe

Cl

C and Fe

C and Fe

Almost the entire mass of an atom is concentrated in the:

Protons

Electrons

Neutrons

Nucleus

Nucleus

Chemical compounds can be made by

 

Protons

covalent bonds

Negative ions

isotopes

Covalent bonds

A Hydrogen bond is:

 

The attraction between a positively charged hydrogen atom in a molecule with a negatively charge hydrogen atom of the same molecule

 

The attraction between a positively charged hydrogen atom in a non-polar molecule with a negatively charge hydrogen in another non polar molecule

 

The attraction between a positively charged hydrogen atom in a polar molecule with a negatively charge Oxygen in another polar molecule

 

Formed when oppositely charged ions transfer electrons

The attraction between a positively charged hydrogen atom in a non-polar molecule with a negatively charge hydrogen in another non polar molecule

Water is a:

Polar molecule

Non-polar molecule

Ionic molecule

Neutral molecule

Polar molecule

What instrument was used to first identify cells:

 

Micrometer

Microscope

SEM

Centrifuge

Microscope

What does NOT constitute as a plant organelle:

 

Membranes

Proteins

Mitochondria

Nucleus

Proteins

The information center of the cell is the ______.

 

mitochondria

chloroplast

nucleoli 

nucleus 

lysosome

Nucleus

The cell theory states that all living things are composed of atoms

 

True

False

False (are composed of CELLS not ATOMS)

Chloroplasts are a type of plastid

 

True

False

True

Which of the following is NOT a component of a nucleotide?

 

Phosphate group

Sugar

Nitrogenous base

 Fatty acid

None of these above

Fatty Acid

Which of the following are NOT organic compounds?

 

Lipids 

Proteins

Nucleic acids

Carbohydrates

Salts

Salts

Which is (are) the important polysaccharide(s) found in plants?

 

Starch 

Sucrose

Cellulose

Starch and Sucrose

Starch and Cellulose

Starch and cellulose

Which of the following is NOT a property of an organic compound?

 

Carbon bonding to Zinc 

Carbon bonding to hydrogen 

Carbon bonding to oxygen

Carbon bonding to carbon

 Carbon bonding to Zinc

Entropy is the measure of randomness or disorder in a system

 

True

False

True

What is the outer boundary of the cell?

 

plasma membrane

nuclear membrane 

endoplasmic reticulum

nucleolus

Plasma Membrane

Phospholipids have hydrophilic and hydrophobic regions.

 

True

 False

True

The various functions of the plasma membrane are largely determined by the plasma membrane proteins.

 

True

False

True

Which statement best describes the plasma membrane?

 

It is freely permeable to all substances. 

It is selectively permeable to certain substances.

It is nonpermeable to all substances.

It is selectively permeable to certain substances.

Sugar is dissolved in water. The ______ is the solute and the solvent is the ______ molecules.

 

water, sugar

sugar, water

sugar, sugar

water, water

sugar, water

The greater the complexity of the organism, the greater the number of chromosomes within the cell.

 

True

 False

False

The diploid chromosome number for watermelon is 22. The haploid number of chromosomes found in their reproductive cells would be ______.

 

44

22

33

11

11

During the cell cycle, interphase lasts longer than mitosis.

 

True

False

True

Which of the following is the correct sequence of mitotic phases?

 

metaphase, anaphase, telophase, prophase

anaphase, prophase, metaphase, telophase

 prophase, anaphase, metaphase, telophase 

prophase, metaphase, anaphase, telophase

prophase, metaphase, telophase, anaphase

prophase, metaphase, anaphase, telophase

Cytoplasmic division of a cell is called ______.

 

mitosis

meiosis

cytokinesis

cell plate formation

centromere

meiosis