Humans add greatly to the carbon cycle by A. driving cars B. planting trees C. conserving energy D. using solar power
Which best illustrates the result of the process of meiosis? A pea plant has the same flower color as its parent plants. A daughter looks different from both her mother and her father. A cheetah cub has very similar fur to its mother. A Labrador puppy looks exactly like its father.
Solid fats have a high proportion of _____. glycerol saturated fatty acids unsaturated fatty acids fish and vegetable oils
Which of the following is used as evidence in supporting the idea that life changes over time? A. the time period in which an embryo develops B. the similarities in the body systems such as the nervous and circulatory systems C. the existence of homologous structure D. the big bang theory
What is the structure and function of a pseudopod? it sticks out like a foot and helps with movement. it beats liquid like a whip and helps with movement. it looks like a hair and sweeps food into a mouth-like opening. it contains membranes that carry out photosynthesis?
Which enzymes are secreted only by the pancreas? nucleases amylase and proteases lipases amylase, proteases, lipases, nucleases
Whales have what seem like remnants of a pelvis and femur, as shown here. What are these structures an example of?
Which hormone is responsible for regulating the sleep cycle in your body? Select one of the options below as your answer: A. Melanotropin B. Melatonin C. Adrenaline
The product of the p53 gene _____. the product of the p53 gene _____. slows down the rate of dna replication by interfering with the binding of dna polymerase
Which scientist proposed a link between contaminated water and cholera A.Pasteur B. curie C. salk D.koch
Genetic drift tends to occur in populations that (1 point)are very large. are small. are formed from new species. have unchanging allele frequencies
Why do naturalists suggest that we plant more trees? Plants use CO2 but do not release any, thus maintaining a balance of CO2 in the atomsphere. Plants release CO2 through respiration and use it for photosynthesis, thus decreasing the amount of CO2 and maintaining its balance in the atmosphere. Plants do not use any CO2, thus maintaining low levels of CO2 and balancing its level in the atmosphere.
Biochemistry is the study of _____. energy and matter within living organisms energy and matter of earth energy and chemicals chemical reactions and bonds
Scientific evidence is most likely to be consistent if it is based on data from A) random samples B) uncontrolled experiments C) biased experimental designs D) small data samples
1.which of the following is NOT a major component of soil A.mineral matter B.air C.humus D.earthworms 2.a soils texture is determined by ___ A.mineral composition B.type of humus C.water content D.particle size 3.the main source of organic matter in soil is A.water B.plant C.fungi D.bacteria
Which object reflects light with the longest wavelength? a yellow book a violet flower a blue paper a green leaf
Which statement could be categorized only in the anaerobic section of the Venn diagram? a. is performed by eukaryotes b. has commercial uses c. regenerates NADH d. occurs in the mitochondria
Which of the following statements is most accurate concerning the founder effect? A. It increases genetic variation B. It is not an example of genetic drift C. It results when a small population breakers away from a larger one D. It only occurs amongst the amish
Which of the following is not characteristic of marshes? a. shallow water b. frequent floods c. acidic groundwater d. herbaceous plants
A closed circle with short lines inside on a topographic map A. Relief B. Depression C. Elevation D. Topographic map E. Contour interval F. Index contour
Which is required for sexual reproduction? mitosis binary fission diploid cell production meiosis mitosis binary fission diploid cell production meiosis
Which of these correctly distinguishes mitosis from meiosis? A) Mitosis occurs in germ cells and meiosis occurs in somatic cells. B) Crossing over takes place in mitosis and not in meiotic cell division. C) Meiosis produces four 2N daughter cells; mitosis produces two 2N daughter cells. D) The number of chromosomes remains the same in mitosis and is reduced by half in meiosis.
Lactase and carbonic anhydrase are examples of what type of substance? A. substrate B. reactant C. product D. enzyme
Which is NOT a shared characteristic of all chordates? A ventral, solid nerve cord A notochord Pharyngeal slits
The time from one economic peak to another economic peak (think roller coaster ride) is called the _____. economic cycle Gross Domestic Product net exports