Living Things, Cells, and Cellular Functions
The removal of mitochondria from a typical animal cell would have an immediate effect on the cell’s production of this
1) ATP 2) DNA 3) oxygen 4) glucose
What is ATP?
DNA is formed using four kinds of base subunits. In a double-stranded segment of DNA, the percentage of the base C is 18%. What is the approximate percentage of base T?
(1) 18% (3) 36% (2) 32% (4) 64%
32%
Some organisms have variations. Two sources of these variations are
(1) mitotic and meiotic cell division (2) mutations and recombination (3) cloning and sexual reproduction (4) natural selection and evolution
2) mutations and recombination
This factor would be an abiotic limiting factor for fish living in a lake in New York State
1) amount of algae (2) number of humans fishing
(3) number of fish predators (4) acidity of the water
What is the acidity of water?
Which character in the Wizard of Oz asked for courage
The Lion
When a plant is in a hot and dry environment, the guard cells may close the stomate openings in the leaves. This action will directly
(1) maintain homeostasis by reducing the evaporation of water (2) harm the plant by cutting off its oxygen supply (3) maintain homeostasis by preventing carbon dioxide from entering (4) harm the plant by cutting off its energy supply
1) maintain homeostasis by reducing the evaporation of water
Each of the cells present in a woman contains a complete set of chromosomes. The only exceptions are her
(1) skin cells (3) nerve cells (2) egg cells (4) lung cell
2) egg cells
An example of a population in which evolution could take place in a relatively short period of time could be
(1) pathogenic bacteria exposed to antibiotics (2) oak trees in a stable ecosystem (3) elephants living in a wildlife preserve (4) algae grown under constant condition
1) pathogenic bacteria exposed to antibiotics
A native species is competing for resources with a nonnative species that was accidentally introduced into the area. The nonnative species is more likely to survive than the native species when
1) both species eat the same food (2) predators prey on both species (3) the native species is immune to a particular pathogen present in the ecosystem (4) the nonnative species has no natural enemies present in the ecosystem
Are you Aaron Burr, sir? is a line from what musical?
Hamilton
In single-celled organisms, materials are stored primarily in
(1) ribosomes (3) nuclei (2) mitochondria (4) vacuoles
4) vacuoles
A plant commonly referred to as “Mother of Thousands” has lost its ability to produce seeds. In order to reproduce, the edges of the plant’s leaves asexually develop miniature plants that drop off and grow into mature plants.
The cells of the offspring would have (1) half the genetic information, when compared to cells of the parent plant’s leaves (2) the same genetic information, when compared to cells of the parent plant (3) twice as much genetic information as is present in the cells of the parent plant (4) incomplete genetic information, because the parent plant does not produce seeds
2) the same genetic information, when compared to cells of the parent plant.
For years, scientists believed that fl ight evolved when ancestral birds climbed trees and then glided back to the ground. Recent fossil evidence suggests that fl ight may have evolved from the ground up, as early birds used to jump off the ground as a way to avoid predators. These discoveries suggest that
(1) scientists use only fossil evidence to study fight (2) scientific understandings can change as new information becomes available (3) most birds avoid predators by jumping off the ground into the air (4) ancestral birds always climbed trees
2) scientific understandings can change as new information becomes available
Evidence suggests that a large meteorite hit Earth 65 million years ago, causing a layer of dust to block the Sun, cooling the planet. It is estimated that 70% of all plant and animal species, including the dinosaurs, died off as a result. The best explanation for the deaths of these organisms is that (1) consumers require sunlight to make sugars in order to survive (2) the amount of energy available to the biosphere was decreased (3) energy is produced only by plants (4) all animals eat plants for energy.
The amount of energy available to the biosphere was decreased.
Do, re, mi is a song from which musical...
The Sound of Music
Which sequence best represents the levels of organization in a paramecium, a single-celled organism?
(1) cells —› tissues —› organs —› organ systems —› organism
(2) organelles —› organ systems —› organism (3) cells —› organs —› organ systems —› organism
(4) organelles —› organism
4) organelles-- organism
Bacteria reproduce asexually by a process known as binary fi ssion. In binary fi ssion, the bacterium’s single chromosome is copied and the cell splits in half, with each new cell receiving a copy of the chromosome. The biggest advantage that binary fission often has over sexual reproduction is that
(1) there is more genetic variety in the resulting cells (2) the genetic material comes from two parents (3) the offspring inherit only favorable genes (4) a large number of identical offspring are produced.
4) a large number of identical offspring are produced.
The process of sexual reproduction is an important part of the process of evolution. One reason for this is that meiosis and fertilization directly produce many new (
1) antigens 2) variations
(3) species 4) pathogen
2) variations
Destruction of ocean habitats by pollution today means that the organisms living there may not survive in the future. By polluting the oceans, humans are
(1) helping advance economic gains by using resources wisely (2) altering the equilibrium of ocean ecosystems (3) decreasing the rate of species extinction (4) increasing the stability of the oceans
2) altering the equilibrium of ocean ecosystems
The amount of money that a winning lottery ticket will get you in "In the Heights"
96,000
The process by which a cell copies its DNA before it divides is
(1) mutation 2) diffusion
(3) replication (4) respiration
3) replication
In gel electrophoresis, the fragments of DNA separated because of
(1) pH and color (2) electrical charge and size (3) charge and radioactivity (4) color and size
2) electrical charge and size
Oops! This is Ecology!
A trade-off was made by the local population that has increased the number of turtles in the area. Which statement best describes the trade-off?
(1) Placing barriers around the turtle nests made it easier for tourists to find and photograph them. (2) The night patrols kept tourists from raiding the turtle nests and selling the eggs. (3) The shops, bars, and restaurants agreed to close early, even though they could lose customers, so that the turtles could have a better chance to nest successfully. (4) Local fishermen agreed to stay away from certain fi shing areas and catch fewer fish so that the tour boats could bring tourists into the sea-grass areas.
3) The shops, bars, and restaurants agreed to close early, even though they could lose customers, so that the turtles could have a better chance to nest successfully.
A Christmas tree farmer cuts down a native forest to plant Frasier fi r trees. Compared to the original forest, the newly planted Christmas tree farm will most likely be
(1) more stable and more diverse (2) more stable and less diverse (3) less stable and more diverse (4) less stable and less diverse
4) less stable and less diverse
This musical is playing at the Stephen Sondheim theater.... across the street from Rep!
& Juliet