Homeostasis
An example of how a plant maintains homeostasis includes
(1) producing many seeds for reproduction
(2) controlling the amount of available solar energy
(3) recycling energy from the Sun
(4) regulating the action of guard cells
(4) regulating the action of guard cells
The structures most directly involved in the synthesis of cellular proteins are the
(1) nucleus and ribosomes
(2) cell membrane and nucleus
(3) chloroplasts and cell membrane
(4) mitochondria and chloroplasts
(1) nucleus and ribosomes
plants
As a population of organisms within a forest ecosystem increases, the size of the population is eventually limited by
(1) the overproduction of their food supply
(2) the size of similar populations in a nearby ecosystem
(3) a finite supply of water and nutrients
(4) a lack of competition
(3) a finite supply of water and nutrients
What is ‘Baby Yoda’s’ real name?
grogu
Which activity can occur without the use of energy?
(1) contraction of muscle tissue (3) active transport of minerals
(2) protein synthesis in a cell (4) movement of water across a membrane
movement of water across a membrane
Tourists travel to the Adirondacks in the fall to see the changing colors in the leaves of the trees. The leaves turn from green to many shades of red, yellow, and orange, as the chlorophyll slowly breaks down. A decrease in green chlorophyll in the chloroplasts will directly result in
(1) an increase in the glucose and oxygen produced
(2) a decrease in the glucose and oxygen produced
(3) an increase in the glucose and a decrease in the carbon dioxide produced
(4) a decrease in the glucose and an increase in the carbon dioxide produced
(2) a decrease in the glucose and oxygen produced
what kinds of organisms carry both photosynthesis and respiration?
plants
Solar and wind power are options available to people interested in producing electricity while reducing their reliance on fossil fuels. A benefit of using these alternative energy sources is that they
(1) preserve natural resources for future generations
(2) increase the number of jobs required for mining coal
(3) ensure that supplies of fossil fuels will never decrease
(4) cost more to generate than all other sources of electricity
(1) preserve natural resources for future generations
Who was the first basketball star to appear on a box of cereal?
michael jordan
Contractile vacuoles are organelles that maintain water balance by pumping excess water out of some single-celled pond organisms. In humans, the kidney is an organ chiefly involved in maintaining water balance. These facts best illustrate that
(1) tissues, organs, and organ systems work together to maintain homeostasis in all living things
(2) interference with nerve signals disrupts cellular communication and homeostasis within organisms
(3) a disruption in a body system may disrupt the homeostasis of a single-celled organism
(4) structures found in single-celled organisms can act in a manner similar to tissues and organs in multicellular organisms
(4) structures found in single-celled organisms can act in a manner similar to tissues and organs in multicellular organisms
Which substance can enter a cell by diffusion without having to be digested?
(1) water (3) starch
(2) protein (4) fat
water
Prokaryotes and eukaryotes are different because
Eu = nucleus
Pro = no nucleus
Which two structures are directly involved in the normal development of a human fetus?
(1) uterus and placenta
(2) oviducts and ovaries
(3) testes and ovaries
(4) placenta and stomach
(1) uterus and placenta
What flower plant does vanilla flavor come from?
orchid
Sweating is a process that helps cool the body during strenuous exercise. This is an example of
(1) recycling of gases
(2) cellular respiration
(3) gene malfunction
(4) a feedback mechanism
(4) a feedback mechanism
what is common to all cells
a. cell wall
b. photosynthesis
c. divide to form new cells
d. have a nucelus
c. divide to form new cells
During an experiment you want to view the nucleus of a cell. How would you most easily view this organelle?
a. microscope
b. naked eye
c. magnifying class
d. you cannot see the nucleus
a. microscope
Which statement correctly describes an organism’s genetic information?
(1) DNA molecules contain four subunits known as genes.
(2) Chromosomes are made entirely of protein.
(3) Genes are made of long sequences of chromosomes.
(4) DNA contains combinations of four base subunits.
(4) DNA contains combinations of four base subunits.
What tree is the largest and tallest in the world?
california red wood
Which group contains only molecules that are each assembled from smaller organic compounds?
(1) proteins, water, fats
(2) proteins, starch, carbon dioxide, water
(3) proteins, fats, starch
(4) proteins, carbon dioxide, starch
(3) proteins, fats, starch
What is hypo, iso, and hypertonic?
hyper - higher solution concentration vs cell
iso - same concentration
cell wall, vacuole size,
The instructions for making an important protein in the blood-clotting process may be missing in some individuals. Scientists can now isolate these instructions and insert them into a yeast cell that will then produce the protein. Altering yeast cells in this way is known as
(1) selective breeding
(2) genetic engineering
(3) homeostatic regulation
(4) natural selection
(2) genetic engineering
How many stars are there in our solar system?
one.