A) differentiation B) immunity C) evolution D) heredity
A) availability of starch molecules B) nutritional habits of the organism C) environment of the organism D) type and order of amino acids
A) differentiation B) gene insertion C) selective breeding D) cloning
A) reproductive cells composed of molecular bases B) folded chains of bonded glucose molecules C) large molecules that have only one function D) coiled strands of genetic material
A) natural selection B) asexual reproduction C) habitat modification D) genetic engineering
A) The gene for insulin has a different sequence of molecular bases than the gene for testosterone. B) The gene for insulin is turned ON in liver cells, but the gene for testosterone is not C) The gene for insulin is replicated in vacuoles, while the gene for testosterone is replicated in mitochondria D) The gene for insulin is a sequence of five different molecular bases while the gene for testosterone is a sequence of only four differentmolecular bases.
A) DNA is functional in only 10% of the cells of the body B) different groups of cells containing the DNA may be exposed to different environmental conditions, for example, more food for one but not the other C) some of the DNA in some of the cells will be removed by chemical reactions D) only the DNA in certain cells will replicate
A) fertilization → meiosis → mitosis B) fertilization → mitosis → meiosis C) meiosis → fertilization → mitosis D) mitosis → fertilization → meiosis
A) recombination B) mitotic cell division C) meiotic cell division D) zygote formation
A) overproduction of offspring and competition B) the need to adapt and maintain homeostasis C) sorting and recombining of genes in meiosis D) replication and cloning
A) produced more reproductive cells than the male panthers in Texas B) mated only with panthers from Texas C) solved the reproductive problems of the species by asexual methods D) increased the genetic variability of the panther population in Florida
A) an adaptation that will be passed on to other types of cells in the body B) increased variation in the type of organelles present in the cell C) rapid evolution of the organism in which the cell is found D) a mutation that will affect the synthesis of a certain protein in the cell but not the offspring
A) meiosis to produce gametes B) internal fertilization to produce an embryo C) mitosis to produce a larger population D) fusion of eggs and sperm to produce zygotes
A) oranges and other kinds of fruit B) oranges without seeds, only C) a majority of oranges with seeds and only a few oranges without seeds D) oranges with seeds, only
A) It is affected primarily by the eating habits and general health of the father. B) It is affected primarily by the eating habits and general health of the mother. C) It is not affected by conditions outside the embryo. D) It will not be affected by any medication taken by the mother
A) Replicated chromosomes separate during gamete formation. B) As an embryo develops, various tissues and organs are produced. C) The cells produced by a zygote usually have different genes. D) Offspring have a combination of genes from both parents.
A) the strange effects mannequins can have on people B) a cancer that mutates and becomes elegant and beautiful C) a virus aimed to cure cancer that mutates and causes humans to become monster-like D) a dog named Samantha and how she helps her owner overcome obstacles
A) lead to more serious mutations in offspring B) cannot be passed on to offspring C) are usually beneficial to the organism D) usually lead to the death of the organism
A) Each cell has half the normal number of chromosomes and the cells are usually genetically different. B) Each cell has pairs of chromosomes and the cells are usually genetically different. C) Each cell has pairs of chromosomes and the cells are usually genetically identical. D) Each cell has half the normal number of chromosomes and the cells are usually genetically identical.
A) replicate different numbers of genes B) synthesize the same proteins and enzymes as the entire colony is cloned from the original C) express adaptations unlike (different than) those of the other cells D) have a resistance to different antibiotics
A) make fertilization impossible B) decrease her ability to provide essential nutrients to an embryo C) make carrying a fetus impossible D) affect the production of eggs
A) estrogen B) progesterone C) placenta D) ovary
A) are easily digestable B) are made up of nutrient-rich sugars C) carry progesterone and fool the mother's body into thinking it is already pregnant D) provide plenty of testosterone for her well-being
A) producing toxins that compete with bacterial toxins B) inserting part of their DNA into the bacterial cells C) engulfing (devouring) and digesting the bacteria whole D) causing mutations in the bacteria
A) hijacks cells into making more viruses leaving the host defenseless to disease B) automatically causes AIDS C) it takes a very long time to begin injecting its viral RNA code into the hosts' cells D) provides immediate immunity to other diseases |