Soil and weather would be considered part of the______________factors of an ecosystem.
a) abiotic
b) antibiotic
c) biomass
What is
a) abiotic
100
Which of the following molecules stores genetic information?
a) sugar
b) lipids
c) DNA
What is c) DNA
100
What are the 4 things necessary for an elephant to survive.
a) food, water, air, sunshine
b) water, clothes, air, sunshine
c) food, water, living space, air
What is c) food, water, living space, air
100
A human skin cell contains 46 chromosomes. How many chromosomes are present in the daughter cells after mitosis?
a) 23
b) 92
c) 46
What is c) 46
100
In DNA, adenine (A) always pairs with ______.
a) Thymine (T)
b) Cytosine (C)
c) Guanine (G)
What is a) Thymine (T)
200
What are the living or once living parts of the environment? For example, trees, bushes, lions in the Savanna.
a) abiotic
b) biotic
c) biosphere
What is b) biotic
200
Which molecule below is an example of a carbohydrate?
a) enzyme
b) DNA
c) starch
What is c) starch
200
This system gathers, interprets and responds to information. Helps maintain homeostasis.
a) Digestive
b) Muscular
c) Nervous
What is c) Nervous
200
In this stage all of the chromosomes line up in the middle of the cell.
a. anaphase
b. prophase
c. metaphase
d. telophase
What is c. metaphase
200
In DNA, Thymine (T) always pairs with ______.
a) Adenine (A)
b) Cytosine (C)
c) Guanine (G)
What is a) Adenine (A)
300
What living facts determine the health of an ecosystem?
a) biotic
b) abiotic
c) temperature
What is a) biotic
300
If scientists search other planets for possible life, they are likely to focus on the presence of molecules containing which of the following elements?
a) iron
b) carbon
c) potassium
What is b) carbon
300
What is homeostasis?
a) the ability of your body to keep from moving.
b) the ability of your body to fall asleep.
c) the ability of your body to maintain internal conditions.
What is c) the ability of your body to maintain internal conditions.
300
a) ACDB
b) ABCD
c) CBDA
What is c) CBDA
300
In DNA, Cytosine (C) always pairs with ______.
a) Thymine (T)
b) Cytosine (C)
c) Guanine (G)
What is c) Guanine (G)
400
A rodent population leaves an ecosystem due to decreased temperatures and increased rain. Which best explains why the rodents left?
a) increase in predation
b) decrease in parasitism
c) change in abiotic factors
What is c) change in abiotic factors
400
Proteins are very large molecules that are broken down by the digestive system into small subunits of protein. The subunits of proteins are:
a) nucleotides
b) amino acids
c) monosaccharides
What is b) amino acids
400
Organisms must be able to react to a:
a) Homeostasis, Energize
b) Homeostasis, organize
c) stimulus, respond to environment
What is c) stimulus, respond to environment
400
Why is mitosis important to multicellular organisms?
a) It allows for organisms to grow and develop.
b) It allows for organisms to replace old cells.
c) It allows for organisms to reproduce through sexual reproduction
d) both a and b
What is d) both a and b
400
Uncontrolled cell division is characteristic of ___________.
a) cancer
b) meiosis
c) budding
What is a) cancer
500
An environment's biotic and abiotic factors interact to make a(an)______________.
a) community
b) ecosystem
c) niche
What is b) ecosystem
500
The elements found in a carbohydrate are:
a) carbon, hydrogen, oxygen, nitrogen
b) carbon, hydrogen, oxygen
c) carbon, hydrogen, oxygen, nitrogen, phosphorus
What is b) carbon, hydrogen, oxygen
500
The sum of all chemical reactions in the body is called______________.
a) Sexual
b) Metabolism
c) Asexual
What is b) Metabolism
500
When during the cell cycle are chromosomes visible?
a) only during interphase
b) only during cell division
c) only when they are being replicated
What is b) only during cell division
500
In DNA, Guanine (G) always pairs with ______.
a) Thymine (T)
b) Cytosine (C)
c) Guanine (G)