Mitosis/Meiosis
Number of stages in Meiosis
8
What are the 2 products of photosynthesis?
O2 and Glucose (C6H12O6)
In DNA bases:
A matches with ______
C matches with ______
A ->T
C -> G
What is the difference between prokaryotic and eukaryotic cells?
Prokaryotic - No Nucleus
Eukaryotic - Has a Nucleus
Water moves in and out of cells. During Osmosis water always moves what direction?
From high to low concentration.
Meiosis increases genetic variation through a process called crossing over. This process occurs in which stage
Prophase I
In the carbon cycle, What are 2 ways CO2 is released back into the atmosphere?
Cellular Respiration, Photosynthesis, Decomposition, or Combustion
Transcribe the DNA sequence below into an RNA sequence:
DNA: T A C G A T G C A T
RNA: A U G C U A C G U A
List the 4 kingdoms in the domain Eukarya
Plantae, Animalia, Protista, Fungi
For a long time scientists have studied the cells of complex organisms. Scientists have discovered that the shape of the cell relates to what?
The function
Draw Metaphase and explain what is occurring
Chromosomes line up in the middle of the cell
What is the relationship between the equations of photosynthesis and cellular respiration?
They are inverses of each other.
What is the repeating monomer of a DNA molecule?
Nucleotide
An organism, such as a nematode worm, may have only 1000 cells. It should be classified as being what?
Multicellular
What are the 2 types of cell transport that use NO energy?
Facilitated diffusion, simple diffusion, or osmosis
A normal human somatic cell has 46 chromosomes.
A human gamete contains how many chromosomes
23
Laura put an underwater plant in a glass jar full of water and sealed the lid to create a closed system. She recorded the mass of the jar with the plant inside it as 538 grams. She put the jar on a sunny window sill and observed that the plant showed noticeable growth after several days. After a week, she again recorded the mass. What was the mass of the jar after one week?
538 grams. Conservation of Mass.
The 3 parts of a Nucleotide are..
Phosphate, Sugar, and a base.
Scientists have discovered organisms that thrive in hot water that is 90°C (194°F) and do not needsunlight or oxygen to live. Into which kingdom would the scientists classify these organisms?
Archaebacteria
An elephant is a multicellular organism that weighs about 200 pounds at birth and can grow to weighas much as 15,000 pounds. What increases as the elephant grows into an adult?
The number of cells.
Which is the greatest benefit of sexual reproduction?
Produce genetically diverse offspring
Many different plant and animal species live in the Amazon rainforest. Which is the most likely result of large areas of deforestation in the Amazon rainforest? Hint: Think in relation to the products of photosynthesis.
A decrease in Oxygen production
List the 3 differences between DNA and RNA
DNA RNA
1) Double stranded Single stranded
2) Thymine Uracil
3) Deoxyribose Sugar Ribose Sugar
What is one thing that all organism in the kingdom animalia have in common?
Hint: I am looking for something in terms of their cells. (do not say eukaryotic)
They have specialized sensory cells and organs.
Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What is most likely happened to stem cells grown on a hard, rigid surface?
Become bone cells