SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
CLEP Natural Science
Start Test
Study First
Subjects
:
clep
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Membrane-bound organelle that stores water and soluble substances
DNA
vacuole
ovules
shoot apex
2. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
cytoskeleton
post-transcriptional processing
chromatids
transformation
3. The part of the stamen that contains pollen
anther
secretory vesicles
filament
nuclear pores
4. Sequence of DNA that codes for a protein and thus determines a trait
cofactor
shoot apex
metabolism
gene
5. (adenosine triphosphate) main energy source that cells use for most of their work
ATP
anaphase
cofactor
chlorophyll
6. Disk-like plates which are the site of photosynthesis in chloroplasts
anther
grana
codon
ovules
7. Transport of a substance across a cell membrane against the concentration gradient
active transport
golgi apparatus
endoplasmic reticulum
ribosomes
8. Formed when cell membrane surrounds a molecule outside the cell and ingests it
endocytic vesicles
cytokinesis
annuals
endoplasmic reticulum
9. The organic process whereby the DNA sequence in a gene is copied into mRNA
transcription
pistil
annuals
cell
10. Body of a chloroplast containing grana
ATP
anaphase
stroma
organelles
11. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
ribosomes
DNA
prokaryotes
facilitated diffusion
12. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
transcription
ovules
metabolism
stroma
13. Classification of plant which survives only a single season
microvilli
secretory vesicles
annuals
facilitated diffusion
14. Smallest unit of most living things
cell
ovules
active site
cytoskeleton
15. Two identical chromosomes that split and contain the same genetic material
active site
chromatids
anther
nuclear pores
16. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
translation
cell wall
ovules
substrate
17. Different forms of a gene
chromatin
stamen
mitochondria
alleles
18. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
centrioles
ATP
biennial
krebs cycle
19. Uses electrons from the Krebs cycle to change ADP to ATP (cytochromes on surface of cristae of mitochondria - contain protein and heme (iron containing) groups - electrons pass along them and ATP is produced)
nucleosome
electron transport
anabolism
post-transcriptional processing
20. Reproductive cells - have only half the number of chromosomes
cell membrane
codon
gametes
catabolism
21. A substance that must join with the enzyme to enable it to fit the substrate
cristae
grana
cofactor
ovules
22. Classification of plant whose life cycle survives two seasons
reduction
prokaryotes
biennial
ovules
23. Breakdown of more complex substances into simpler ones with release of energy
annuals
translation
catabolism
ribosomes
24. The male reproductive organ of a flower consisting of anther - filament - and pollen
exocytosis
pistil
stamen
tonoplast
25. Living thing
DNA
organism
cell cycle
nucleosome
26. The substance acted upon by an enzyme
substrate
gymnosperms
gene
lysosomes
27. Production of a chemical compound by a living organism
golgi apparatus
secretory vesicles
biosynthesis
ovules
28. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
endosymbiont hypothesis
ATP
glycolysis
golgi apparatus
29. Pores which allows materials to move in and out of the cell nucleus
mitosis
glycolysis
nuclear pores
biosynthesis
30. Composed of a bilayer of lipids embedded with globular proteins
cell membrane
shoot apex
gymnosperms
cell wall
31. The first stage of mitosis - forming spindle fibres attached to the centromere
prosthetic group
alleles
cytokinesis
prophase
32. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
metaphase
stroma
microtubules
prophase
33. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
lysosomes
mitosis
golgi apparatus
DNA
34. Process of building up complex materials (proteins) from simple materials
transformation
organelles
anabolism
gymnosperms
35. Small - dense region within most nuclei in which the assembly of RNA proteins begins
prosthetic group
nucleolus
vacuole
ovules
36. An internal membrane system in which components of cell membrane and some proteins are constructed. rough - instrumental in protein synthesis; smooth - processes lipids fats and steroids
centromere
exocytosis
virus
endoplasmic reticulum
37. In photosynthesis - this is the splitting of water by light
gymnosperms
annuals
photolysis
active transport
38. The part of an enzyme where the chemical reaction occurs
active site
centrioles
biosynthesis
chromatids
39. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
transcription
ovary
organelles
40. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
microfilaments
annuals
facilitated diffusion
fermentation
41. A cell having two sets of chromosomes or twice the haploid number
grana
diploid
transduction
metaphase
42. Division of the cytoplasm during cell division - new cell is formed
nucleosome
fermentation
nuclear pores
cytokinesis
43. The process of transfering genetic material from one cell to another
genome
anabolism
transduction
interphase
44. The complete genetic material contained in an individual
krebs cycle
cell membrane
grana
genome
45. Cell division which produces two identical cells
substrate
mitosis
pedicel
endoplasmic reticulum
46. Classication of plant which produce seeds which are 'naked' (in cones)
filament
gymnosperms
angiosperms
inhibitor
47. The stalk of a stamen that supports the anther
stamen
filament
telophase
alleles
48. Stalk that supports the flower
prosthetic group
crossing over
electron microscope
pedicel
49. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
mitochondria
cytoskeleton
vascular plants
facilitated diffusion
50. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
krebs cycle
centrioles
gene
perennial