What is key to preventing extinction of any one species? Brain development
Adaptation
Reproduction
Cellular division
What is the one major benefit that makes sexual reproduction worthwhile?
The offspring can evolve more quickly and better adapt to changes in their environment
The offspring can in turn produce offspring more quickly
The offspring has two parents to raise it
The offspring is happier
Which is not an organism that can reproduce asexually?
Worm
Bee
Plant
Dog
What type of offspring do asexual organism produce?
An exact clone
Similar offspring
Genetically opposite offspring
Genetically very different offspring
What occurs when a single cell splits into two daughter cells?
Binary fission
Fragmentation
Budding
Regeneration
What occurs when an asexual growth of a clonal individual begins to grow directly from a parent?
Binary fission
Fragmentation
Budding
Regeneration
What occurs when a clonal production of a diploid egg is activated, but not fertilized by the presence of sperm?
Gynogeneisis
Parthenogenesis
Regeneration
Hybridization
Which means that a female produces an egg that retains inside the her until it hatches?
Oviparous
Ovoviviparous
Viviparous
Self incubation

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water