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.