Which of these sentences is true about genetic variation? Mutations always carry out beneficial genetic variations in an organism. Mutations always carry out harmful genetic variations in an organism. Mutations are one of the key factors in genetic variation. Done
When you spin around, you lose balance because of fluid spinning around in the _____. A. cochlea B. tympanic membrane C. semicircular canals D. auricle
The events that lead to genetic drift are _______. a. always natural disasters b. random c. predictable d. related to human activities
Soil 2. Which of the following likely has the largest particle size? subsoil humus topsoil parent material
Coral reefs form when the calcite skeletons of coral build upon each other. please answere quickly and ill rate 4 stars and thanks and rate the brainliest thanks
One of the methods used to reduce energy use is: a. energy efficiency c. energy conservation b. energy reservation d. energy holding
In most ecological communities, plants are the first level of the trophic structure, known as producers. what do plants produce that supports the higher trophic levels of the community
What differentiates extension from hyperextension? A.Extension bends joints in the opposite direction as hyperextension. B.Extension straightens a joint, and hyperextension bends it but in the opposite direction from flexion. C.Hyperextension straightens a joint, and extension bends it in the opposite direction from flexion. D.Both bend joints, but extension can be damaging.
Weathering that does not alter the chemical composition of the rock is called a. chemical weathering. c. biological weathering. b. physical weathering. d. acid weathering.
Which type of microscopy is useful for viewing colorless specimens? A. Transmission electron microscopy B. Light microscopy C. Phase contrast microscopy
Which is the process of cancerous cells spreading to other body areas? metaphase cytokinesis fertilization metastasis
Which statement describes thylakoids? A)Glucose is formed here. B)Water molecules are formed here. C)Only photosystem II functions here. D)Photosystems I and II function here.
What type of organic molecule comprises the majority of a potato? Monosaccharides Disaccharides Glycogen Polysaccharides
On which feature is science based? detailed research with reliable sources static information that does not change emotional appeals test that cannot be repeated
Which is the best description of biology? the study of humans and animals the study of life and living things the study of health care the study of humans, plants, and animals
Biology A Unit 4: Genetics; Lesson 7: DNA Replication ||Quick Check|| 1. In figure 12-5, what nucleotide is going to be added at point 1, opposite from thymine? A. adenine B. thymine C. cytosine D. guanine 2. In Figure 12-5, what is adding base pairs to the strand? A. histones B. nucleosomes C. DNA polymerase D. Chromatin 3. What is different about synthesis of the lagging strand compared to synthesis of the leading strand? A. Synthesis of the leading strand does not occur in the 5’ to 3’ direction.
What is your opinion of the balance of nature hypothesis? Would the deer on the island be better off, worse off, or about the same without the wolves.defend your position
A period during which the embryo of a seed is alive but not growing is a. dispersal. b. fertilization. c. germination. d. dormancy.
Which of the following statements about biodiversity is true? a. Changes to biodiversity always positively affect an ecosystem. b. Changes to biodiversity always negatively affect an ecosystem. c. Changes to biodiversity can positively and negatively affect on an ecosystem. d. Changes to biodiversity never affect an ecosystem.
Which process plays an important role in the cycling of both carbon and nitrogen? (The answer is not respiration)
In nucleotide excision repair, damaged dna is excised by what enzyme(s)? see concept 16.2 (page 327)
Any time stress causes rocks to change, ____________ is the result. a. tension c. compression b. folding d. deformation
Wild turkeys and bobwhite quails are considered which of the following? A, The two most common upland game birds in Florida The two most common upland game birds in Florida B, The two most common migratory game birds in Florida The two most common migratory game birds in Florida C, The two species of protected birds in Florida The two species of protected birds in Florida D, Two bird species that are not found in Florida Two bird species that are not found in Florida
Can be known about Mendel’s five-part hypothesis? It is an answer to a scientific question and is based mostly on research. It identifies three alleles for each gene. It is an answer to a scientific question and is based mostly on prior knowledge. It identifies one allele for each gene.