cells
macromolecules
water
replication
plants
100
Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?
What is cells form from spontaneous generation
100
As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCl), and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine?
What is inactive
100
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
What is high heat capacity
100
what describes DNA after replication has taken place?
What is 2 strands of DNA with one new and one old strand
100
what allows for gas exchange in plants
What is stomata
200
Which invention from the 17th century allowed for the development of modern cell theory?
What is light microscope
200
Which type of molecule is formed from amino acids?
What is proteins
200
Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?
What is cohesion
200
needs two parents
How are sexual reproduction and asexual reproduction different from each other?
200
Plant cells that are specialized for cell division are most likely found in what part of the plant?
What is root tips
300
There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells?
What is ribosome
300
You are analyzing a compound in the laboratory. You find that it is made up of carbon, hydrogen, and oxygen in a ratio of two hydrogen atoms for each carbon atom. How will you classify the compound?
What carbohydrate
300
Why does ice stay at the top of oceans instead of sinking to the bottom?
What is density
300
Which type of reproduction leads to increased genetic variation on a population?
What is sexual
300
If the xylem in a young tree is damaged, which process is first affected?
What is water absorption form roots
400
Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell?
What is active transport
400
Fats, oils and cholesterol are all types of what?
What is lipids
400
Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent?
What is polarity and cohesion
400
If the leaf cells of Plant 1 have 56 chromosomes, how many chromosomes will be found in the leaf cells of Plant 2?
What is 56
400
A plant species lives in an area with limited sunlight. Which physiological adaptation would be most useful to the plant?
What are broad leaves
500
Which characteristic do most plants have in common?
What is autotrophic
500
in mitosis what are the stages?
What is PMAT
500
where are chloroplasts found
What is leaves and stems
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