Biology 1st semester final
Atoms that have filled outermost energy levels and do not participate in chemical bonding are called _____.
inert
Which organelle supplies the cell with energy?
mitochondrion
Carbohydrates provide the body with _____.
a readily available source of energy
Which substance should have the highest pH? Lemon juice, bathroom cleaner, vinegar, distilled water
Bathroom cleaner
When you walk across a carpet, you become negatively charged. Why do you receive a shock when you touch a metal door handle?
Electrons jump from you to the handle
Which substances are responsible for accelerating chemical reactions in cells?
Enzymes
Select all that apply. Select the benefits of reproduction by meiosis.
Genetic variation occurs mutations are not copied over and over again
What process occurs in the first stage of of cellular respirations?
Glucose is broken down.
Your body works efficiently to maintain its internal balance despite the fact that external conditions often change. This is an example of
Homeostasis
Which of the following apply to homeostasis? Select all that apply.
Homeostasis can occur at the cellular level. Homeostasis can occur at the system level. Homeostasis is a characteristic of life
Which kinds of cells are always single celled?
Prokaryotes
Select all that apply . Cell theory teaches that _____.
all living organisms are made up of one or more cells, the cell is the building block of all living things, it also states that all cells arise from one existing cell.
An example of a parallel choice on a dichotomous key is:
brown hair or black hair
Which properties of water plays an important role in the movement of water from the roots to the leaves in plants?
capillary action
A chemical substance composed of atoms of two or more distinct elements chemically bonded to one another is called a
compound
In 1668, Francesco Redi conducted an experiment with jars of meat. This experiment was noteworthy because
disproved the theory that maggots could be spontaneously generated from meat.
Many plants can reproduce sexually and asexually because _____
environmental conditions are not always right to produce flowers and seeds for sexual reproduction
Many plants can reproduce sexually and asexually because _____.
environmental conditions are not always right to produce flowers and seeds for sexual reproduction
Select characteristics which a taxonomist might choose in constructing a plant classification.
leaf shape cones or flowers flower color type of fruit
Characteristics that are always present in a living organism include cells, metabolism, reproduction, homeostasis, and ______.
sensitivity
What is the most difficult part of a controlled experiment?
testing only one variable
Select all that apply The cellular respiration the mitochondrion serves as?
A place for the chemical reaction to occur A place where the enzymes needed for the reaction are located The site for the Krebs cycle.
Almost every cell in the human body is replaced every few years through the process of ____
Mitosis
Select all the apply. Select the items that have a pH level between 5 and 8.
Pure water Great salt lake saliva
Select all that apply. Smaller groupings within a species are called _____?
Smaller groupings within a species are called varieties and breeds.