WorksheetsBiology Review, Wednesday
Total questions: 24
Worksheet time: 12mins
The chart shows which amino acids are coded for by different combinations of mRNA nucleotides.
Which amino acids are coded for by an mRNA segment that reads GUA CAC?
lysine and alanine
valine and histidine
valine and glycine
glycine and serine
How does crossing-over during meiosis lead to genetic variation?
It increases the number of gametes produced.
It adds additional genes to the parent chromosome.
It doubles the number of chromosomes in the gametes.
It increases the number of possible genetic combinations in the offspring.
Which of the following is evidence that the environment influences the expression of genetic traits?
a child with two recessive genes for cystic fibrosis will have the disease
the son of a hemophiliac parents will also have hemophilia
a child needs only one gene for Huntington disease to develop the disease
a healthful diet can help a person with a genetic predisposition for type 2 diabetes avoid this disease
In which of these ways are prokaryotic and eukaryotic cells simliar?
they both contain DNA
they both contain a nucleus
they are both highly complex
they are both enclosed by a cell wall
A single muscle cell is isolated and observed. Which organelle would you expect to be abundant in the cell?
ribosomes
mitochondria
Golgi bodies
lysosomes
Which of these describes mutations that cause skin cancer and lung cancer?
they are somatic mutations and are passed from parent to offspring
they are somatic mutations and are not passed from parent to offspring
they are germ mutations that are passed from parent to offspring
they are germ mutations that are not passed from parent to offspring
Cells use the sequenc3e of nucleotides in the DNA molecule as a set of instructions for making proteins. What parts make up a single nucleotide?
a phospholipid chain and a nitrogenous base
a phosphate molecule and three glucose molecules
a sugar molecule, an amino acid, and a variable group
a nitrogenous base, a sugar molecule, and a phosphate molecule
Which three of the four main kinds of macromolecules are used by living things for energy
proteins, lipids, and nucleic acids
proteins, carbohydrates, lipids
carbohydrates, lipids, nucleic acids
proteins, nucleic acids carbohydrates
Which is an example of how cells use active transport to maintain homeostasis?
water diffuses across a selectively permeable membrane
energy from ATP is used to move sodium and potassium ions against a concentration gradient
particles move passively across the cell membrane in response to a concentration gradient
protein channels embedded in the cell membrane help specific molecules move across the cell membrane
Which of the following groups of terms is associated with engineering transgenic organisms?
meiosis, zygotes, fertilization
crossing-over, genetic variation, haploid cells
recombinant DNA, plasmids, restriction enzymes
incomplete dominance, multiple alleles, mutations
Which of these is one way that growing and buying organic food affects our environment?
competition between native species is reduced
the level of pollution in groundwater is reduced
the demand for fossil fuels is reduced
the risk of oil spills is reduced
Giant sequoia trees are some of the largest living organisms. These massive trees can reach a height of more than 76 meters. Which structural adaptation makes it possible for leaf cells at the top of a giant sequoia tree to receive water from the ground?
xylem
stomata
phloem
guard cells
Which of the followig actions can contribute to sustainable development?
adding solar panels to new buildings
removing cover crops from farmland
removing organic matter from farmland
buiilding homes farther away from schools
Which of the following is an adaptation associated with asexual reproduction in certain fungi, animals, and plants?
spore
budding
guard cell
gametophyte
In the process of DNA replication, the DNA molecule is unzipped down the middle, forming two complementary halves. During which phase of the cell cycle does this occur?
S phase
G1 phase
anaphase
metaphase
Which of the following processes is essential for the synthesis of proteins in living organisms?
Transcription
Photosynthesis
Respiration
Fermentation
What is the primary function of the ribosome in a cell?
To store genetic information
To produce energy
To synthesize proteins
To break down waste materials
Which of the following best describes the role of chlorophyll in photosynthesis?
It absorbs light energy
It transports water
It releases oxygen
It stores glucose
Which of the following processes is directly involved in the production of ATP in cells?
Glycolysis
Transcription
Photosynthesis
Fermentation
What is the primary role of the cell membrane in maintaining homeostasis?
It stores genetic information
It controls the movement of substances in and out of the cell
It synthesizes proteins
It produces energy
Which of the following best describes the function of enzymes in biological processes?
They provide structural support to cells
They speed up chemical reactions
They store genetic information
They transport oxygen in the blood
Which of the following is a function of the mitochondria in eukaryotic cells?
It synthesizes proteins
It produces ATP through cellular respiration
It stores genetic information
It controls the movement of substances in and out of the cell
What is the role of ribosomes in the process of translation?
They replicate DNA
They synthesize proteins by linking amino acids
They transport oxygen in the blood
They break down waste materials
Which of the following best describes the function of the Golgi apparatus in a cell?
It produces energy
It modifies, sorts, and packages proteins and lipids
It stores genetic information
It synthesizes proteins
