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Bio Semester Exam Review Flashcards | StudBud
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Bio Semester Exam Review
Bio Semester Exam Review
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1
I am looking at plant cells under a microscope and see chloroplasts and mitochondria. Am I correct?
No, plant cells don't have chloroplasts
No, plant cells don't have mitochondria
Yes, plant cells have both mitochondria and chloroplasts
Meh
2
Which of the following suggests that an enzymes shape is specific to its function?
Enzymes are specific to a substrate
Enzymes are activated by neighboring molecules
Enzymes can operate in a wide range of conditions
Enzymes are found in all life forms
3
Where in the cell is an mRNA molecule transcribed to make a protein?
Ribosome
ER
Nucleus
Golgi
4
Which of the following is a difference between meiosis 1 and meiosis 2?
Cytokinesis occurs in meiosis 1 but not meiosis 2
Nuclear membranes form during meiosis 1 but not meiosis 2
Meiosis 2 results in 4 haploid cells
Meiosis 2 has a prophase stage but meiosis 1 does not
5
During mitosis, a parent cell that has 4 chromosomes will produce two daughter cells, each with
4 chromosomes
Two chromsomes
16 chromosomes
8 chromosomes
6
What is a benefit of electron microscopes compared to light microscopes?
They can study living cells
The produce highly magnified images
They show true color
They are less expensive
7
What is the importance of peer review?
Make sure their work is correct
It is restricted until results are verified
scientists can share ideas and make sure work meets scientific standards
Not recommended, bias could enter
8
Why are proteins important for the cell membrane?
Proteins allow large substances to pass through the cell membrane
Proteins allow gas molecules to pass through the cell membrane
Proteins prevent the membrane from breaking a part in water
Proteins connect the cell membrane to the cell wall
9
What is true about macromolecules?
Proteins are made of amino acids
Glycerol is made of fatty acids
Nucleotides are made of nucleic acids
Simple sugars are made of polysaccharides
10
Does mitosis occur differently in specialized cells?
Yes, removes unnecessary chromosomes
Yes, deacitivates unnecessary chromosomes
No, produces the same number of chromosomes
No, produces an extra chromosome
11
How do I know a cell is a eukaryote and not a prokaryote?
The cell has a cell wall
The cell lacks a nucleus
The cell has a nucleus
The cell has a cell membrane
12
What phase of mitosis is shown in the picture?
Anaphase
Metaphase
Prophase
Telophase
13
Can a theory become a law?
Yes, with enough evidence
Theories and laws are the same
No, theories are never reclassified as laws
Who cares?
14
An animal cell that is surrounded by fresh water will burst because
Water will enter the cell
Water will leave the cell
Solutes will move into the cell
Cell contents will leave the cell
15
You see that a cell has no nucleus, no mitochondria, but has a cell membrane and a cell wall. What type of cell is it?
Extinct organism
Plant
Bacteria
Animal
16
What is the genotype of the offspring C?
RrYy
RrYY
Rryy
RRYy
17
Which sequence correctly shows the path of a protein in a cell?
ER, lysosome, golgi
ribosome, golgi, ER
ribosome; endoplasmic reticulum; chloroplast
Ribosome, endoplasmic reticulum, golgi
18
Active transport:
When molecules move from high concentration to low concentration
When molecules move from low concentration to high concentration
idk
When molecules move back and forth
19
What causes cancer?
A mutation causing cell cycle regulation issues
Nondisjunction in meiosis
The immune system attacks normal body cells
Homeostasis fails in the blood
20
Which of the following is evidence that a cell is a prokaryote?
The cell is surrounded by a cell membrane but not a cell wall
Cell is surrounded by a cell membrane and a cell wall
The cell lacks a nucleus
Cell contains a nucleus
21
What is the complimentary DNA strand for: TCAATC
TCAATC
AGCCAG
AAGCTG
AGTTAG
22
Which is not an example of a polysaccharide? (carbohydrates)
Cellulose
Wax
Glucose
Starch
23
What sequence of events occurs during the cell cycle?
Cell division and growth alternate, DNA replication during division
DNA replication and cell division are separated by periods of growth
Cell division and growth alternate, DNA replication during growth
DNA replication, growth, and cell division
24
What can be inferred about cells with semi permeable membranes?
Substances other than water can block pores
Substances other than water can cross
Water leaves cell when placed in environment of high water concentration
Water enters cell when placed in an environment of high water concentration
25
Which of the following correctly describes the role of nucleotides?
They are the monomers of nucleic acids; store genetic information
Building blocks of proteins
Simple sugars that provide energy
They are lipids that make up the cell membrane
26
How does an enzyme influence a biological reaction?
Increases net energy difference
Lowers the activation energy
Increases kinetic energy of reactants
Decreases kinetic energy of reactants
27
What are the genotypes of the parents?
TT & Tt
TT & tt
Tt & Tt
tt & tt
28
When is a mutation beneficial to a species?
If it results in extra chromosomes
They will never be beneficial
When it leads to genetic variation
If it occurs in response to its natural environment
29
When cells become cancerous, what changes in the cell cycle?
Cells go straight from G1 to G2
Cells pass through the cycle without control
Cells go from mitosis to G1
Cells get stuck in S phase
30
Water dissolves a lot of substances, why?
Polar; forms hydrogen bonds
Non polar; allows it to move quickly
Non polar; forms covalent bonds
Polar; forms ionic bonds
31
Why is science different from other disciplines such as art or history?
Relies on testing explanations
Relies on facts
Relies on theories
Relies on observations
32
What best describes active transport?
Does not require energy; moves from low to high
Requires energy; moves from high to low
Does not require energy; moves from high to low
Requires energy; moves from low to high
33
What process is shown in the picture?
RNA transcription
DNA translation
DNA replication
RNA translation
34
Which correctly explains primary function of carbs and lipids?
carbs are hormones; lipids are sugars
carbs provide structure; lipids are quick energy
carbs are short term energy; lipids are insulation and long term energy
This is not relevant to my future
35
What makes up a molecule of water?
One hydrogen and one oxygen
One sodium and two potassium
Two hydrogen and one oxygen
Two oxygen and one hydrogen
36
What happens if you place red blood cells in water?
Nothing happens
Water leaves the cells and the cell shrinks
Water enters the cells and causes them to burst
Water moves in and out evenly
37
What happens during prophase 1?
Gene linkagre; new combinations of chromosomes
Crossing over; new combinations of chromosomes
Crossing over; dna replication
Gene linkage; dna replication
38
Which of the following correctly identifies the number and types of bonds in a water molecule?
Two covalent bonds
Two ionic bonds
One ionic bond
One covalent bond
39
During which phase of mitosis are sister chromatids pulled to opposite ends of the cell?
Telophase
Prophase
Metaphase
Anaphase
40
BB is black, WW is white, BW is black and white. If two heterozygotes are crossed, what percentage will be white?
75%
50%
25%
100%
41
Pink is heterozygous and an example of incomplete dominance. If you cross pink and white, what % will be red?
25%
50%
100%
0%
42
Which best explains the significance of meiosis in the continuation of a species?
Produces egg and sperm that are alike
Asexual reproduction
Provides for chromosomal variation in gametes
Equal number of eggs and sperm are created
