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Biology cumulative exam|40 Complete Q’s and A’s
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Biology cumulative exam|40Complete Q’s and A’s
Chlorophyll is found in plant leaves and absorbs light from the sun to enable
plants to perform photosynthesis. Magnesium is an important component of
chlorophyll. The concentration of magnesium ions is higher in the root-hair
cells of plants than in the soil. Which mechanism of ion uptake would best
enable a plant to produce a steady supply of chlorophyll?
1. osmosis
2. diffusion
3. passive transport
4. active transport - -Active transportation
- Which best illustrates the result of the process of meiosis?
1. A pea plant has the same flower color as its parent plants.
2. A daughter looks different from both her mother and her father.
3. A cheetah cub has very similar fur to its mother.
4. A Labrador puppy looks exactly like its father. - -A daughter looks
different from both her mother and her father.
- Which level of organization is characterized by a group of cells that work
together to perform a common function?
1. organ
2. tissue
3. organ system
4. organism - -tissue
- Which best describes a codon?
1. a cell structure that gives the master instructions for an organism
2. a segment of DNA that is the basis of heredity in organisms
3. the sequence of three bases that codes for a specific amino acid
4. the basic unit of structure and function of all living things - -the sequence
of three bases that codes for a specific amino acid
- Which is the final electron acceptor in the electron transport system of
cellular respiration?
1. NADH
2. FADH2
3.oxygen
, 4.carbon dioxide - -oxygen
- Sheela wants to make a computer model of a land ecosystem. Part of her
model simulates the chemical processes of photosynthesis that involve the
creation of sugars. Which chemical processes are these?
1.the light-dependent reactions
2.the light-independent reactions
3.the daylight reactions
4.the reactions in the mitochondria - -the light-independent reactions
- The equations summarize the process of fertilization. Which equation
represents fertilization?
1. haploid + diploid = diploid
2. diploid + haploid = haploid
3. haploid + haploid = diploid
4. diploid + diploid = diploid - -haploid + haploid = diploid
- The Venn diagram compares aerobic respiration and anaerobic respiration.
Which statement could be categorized in the overlapping section of the Venn
diagram?
1. uses pyruvic acid
2. has commercial uses
3. regenerates NADH
4. produces 36 ATP - -uses pyruvic acid
- Mendel's pea plants had either purple or white flowers. This means that the
plants
1. can self-pollinate.
2. have two recessive traits.
3. have two alleles for the gene.
34have two copies of a gene from one parent. - -have two alleles for the
gene.
- Which are different forms of the same gene?
1. genotypes
2. phenotypes
3. alleles
4. traits - -alleles
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