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WorksheetsSTAAR Day 1
Total questions: 10
Worksheet time: 13mins
Name
Class
Date
1.
Which of these statements best explains the process of energy conversion that takes place in the mitochondria?
a)
Energy is required for carbon dioxide molecules to form six-carbon sugar molecules.
b)
Water molecules and radiant energy are necessary for anaerobic respiration to take place.
c)
Oxygen molecules release energy in the form of heat during combustion reactions.
d)
The energy in the bonds of glucose molecules is transferred to the phosphate bonds in ATP.
2.
Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?
a)
Enzymes are specific to a substrate
b)
Enzymes can operate in a wide range of conditions.
c)
Enzymes are activated by neighboring molecules.
d)
Enzymes can be found in all life-forms.
3.
Proteins are formed in the cytoplasm of cell using genetic instructions from DNA, which is located in the cells nucleus. Which of the following best explains how the genetic information gets to the site of protein synthesis?
a)
DNA is divided during mitosis, and one strand travels outside the nucleus to bind with RNA and form a protein
b)
DNA is copied to make mRNA. The mRNA leaves the nucleus and goes to the ribosomes, where the information is used to guide protein synthesis.
c)
Genetic information travels from DNA in the nucleus along a strand of mRNA that is connected to ribosomes in the cytoplasm where proteins are made.
d)
The genetic code is transferred to ribosomes on tRNA molecules, which can pass through the nuclear membrane.
4.
A researcher is studying a particular disease-causing agent. The agent has a protein coat, but it lacks a nucleus, contains no other organelles, and can reproduce only when it is inside an animal cell. The researcher should classify the agent as which of the following?
a)
A bacterium
b)
A fungus
c)
A virus
d)
A protist
5.
This organelle is in all prokaryotic and eukaryotic cells. It is a barrier between the cell and the environment controlling what goes in and out of a cell.
a)
cell wall
b)
cell membrane
c)
cell organelles
d)
mitochondria
6.
You might think of me as the trash collector or recycle center is maybe more accurate. What am I?
a)
cytoplasm
b)
lysosme
c)
vacuole
d)
ribosome
7.
What uses cellular energy (ATP) to move substances across a Cell Membrane?
a)
Active transport
b)
Diffusion
c)
Passive Transport
d)
Starwhals
8.
What is the function of autotrophs in the carbon cycle?
a)
to use oxygen to produce glucose
b)
to take in excess water
c)
to use carbon dioxide to produce glucose
d)
to feed on herbivores
9.
What is a sac-like structure used to store water and nutrients? These are much larger in plant cells?
a)
Lysosomes
b)
Mitochondria
c)
Vacuoles
d)
Golgi Body
10.
All the organ systems of the human body work together to maintain homeostasis. What is homeostasis?
a)
a stable internal environment
b)
response to external stimuli
c)
protection from bacteria and other pathogens
d)
the ability to pass characteristics to one's offspring
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