3.2/3.4
crossing over
What percent gets transferred every trophic level
10%
Reactants of photosynthesis
carbon dioxide, water, and light
The macromolecule that deals with long-term energy
lipids
How many times does meiosis go through PMAT?
2 times
What is an organism that only eats meat?
carnivore
Which stage of cellular respiration makes the most ATP
electron transport chain
Which stage does the nuclear envelope disapper?
prophase
What are the end result of meiosis?
4 haploid cells
What is the maximum amount that an ecosystem can hold called?
carrying capacity
The macromolecule that is involved with tRNA
protein or amino acid
A parent is homozygous recessive and has blonde hair. The other parent is heterozygous and has brown hair.
What will the kids phenotype be?
50% brown hair and 50% blonde hair
What is half of the number of chromosomes called?
haploid
Name 4 reasons that the population will decrease
death rate being higher, competitor, disease, loss of habitat
Within homeostasis, if the body is sweating, what does that mean the body is trying to keep in check
body temperature
Two athletes follow different diets: one consumes mostly carbohydrates, while the other consumes more proteins. During a long endurance event, the first athlete performs better initially, but the second maintains muscle function longer.
Which explanation best accounts for this difference?
A. Carbohydrates store genetic information used during exercise
B. Proteins provide quick energy faster than carbohydrates
C. Carbohydrates provide immediate energy, while proteins support structure and repair
D. Proteins are broken down into sugars more efficiently than carbohydrates
C. Carbohydrates provide immediate energy, while proteins support structure and repair
A population of beetles lives in an environment with limited food and space, resulting in a stable carrying capacity. A mutation arises during meiosis that increases genetic variation in offspring. Over several generations, environmental conditions change, reducing available resources.
Which of the following best explains how meiosis and genetic variation could influence the population’s ability to adapt to the new carrying capacity?
A. Meiosis reduces genetic variation, so the population will likely decrease rapidly as conditions change.
B. Increased genetic variation from meiosis may allow some beetles to survive and reproduce, stabilizing the population near a new carrying capacity.
C. Meiosis ensures all offspring are identical, so the population will maintain the same carrying capacity despite environmental changes.
D. Genetic variation from meiosis only affects population size, not the ability to adapt to changes in carrying capacity.
B. Increased genetic variation from meiosis may allow some beetles to survive and reproduce, stabilizing the population near a new carrying capacity.
A lake supports a fish population that has remained stable for several years. Recently, pollution reduced oxygen levels in the water, causing many plants and smaller organisms to die. Over time, the fish population also begins to decline.
Which of the following best explains how the change in environmental conditions affects the lake’s carrying capacity?
A. The carrying capacity increases because fewer organisms are competing for resources.
B. The carrying capacity decreases because the available resources needed to support the fish population have been reduced.
C. The carrying capacity stays the same because it is determined only by the size of the lake.
D. The carrying capacity fluctuates randomly and is not influenced by environmental changes.
B. The carrying capacity decreases because the available resources needed to support the fish population have been reduced.
The reaction needed to use energy
Hint: losing a phosphate
ATP to ADP
Enzymes lower what
activation energy