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Biology > SEMESTER 1 EXAM BIOLOGY TBCS > Flashcards

SEMESTER 1 EXAM BIOLOGY TBCS Flashcards

1
Q

Which types of cells have spindle fibers?

A

Eukaryotic cells (plant and animal)

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2
Q

What are spindle fibers made from?

A

Microtubules

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3
Q

Do all eukaryotic cells have centrioles?

A

No

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4
Q

What do you NOT see in a nondividing cell

A

Chromosomes

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5
Q

Which of the following is not in interphase?
A. Excretion of waste
B. Protein synthesis
C. Nuclear division

A

Nuclear division

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6
Q

What type of ion forms when an atom loses electrons?

A

A positive ion

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7
Q

In a water molecule, shared electrons spend more time around the oxygen atoms than the hydrogen atoms. As a result, the oxygen atom is ______

A

Slightly negative

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8
Q

When sugar is dissolved in water, water is the _____

A

Solvent

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9
Q

When preparing a cell culture, a scientist places a colony of bacteria into distilled water and stirs it. A mixture of water and living cells would best be called a ______

A

Suspension

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10
Q

In New York the rainfall varies from 4.22 to 4.4. What is the most acidic the rainfall could be?

A

4.22

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11
Q

What are the cell membrane channels and pumps composed of?

A

Proteins

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12
Q

Why does diffusion occur?

A

Diffusion occurs because molecules want to go to the area with most concentration to the area with less until they are even. They are constantly moving and colliding which is the [[driving force]] behind it.

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13
Q

An animal cell that is surrounded by fresh water (pure water) will burst because the osmotic pressure causes ______

A

Water to move across the membrane into the cell (diffusion)

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14
Q

What do you call particle transport that requires an input of energy from the cell?

A

Active transport.

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15
Q

If you start with cell, what is the hierarchy of cell organization?

A 
Cell
Tissue
Organ
Organ system
Organism
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16
Q

Organisms can get ____ from food

A

Energy

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17
Q

Living things are organisms if they
A. Move
B. Not able to reproduce
C. Grow and develop

A

Grow and develop

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18
Q

A group of organisms that can inter breed and reproduce fertile offspring are a _____

A

Species

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19
Q

Two hands, two feet, a digestive system is evidence for ____

A

Organization of living things

20
Q

Individuals _____ and populations _____

A

Adapt

Evolve

21
Q

What is homeostasis?

A

Maintaining an internal environment

22
Q

Which is false about the scientific method?
A. Observation -> hypothesis
B. Experiment is repeated
C. Original hypothesis are formed after an experiment
D. Control and test group are the same except one factor.

A

C. Original hypothesis are formed after an experiment

23
Q

A hypothesis that has been tested by many scientists over time with repeatable, supportable results may eventually be called a _____

A

Theory

24
Q

In an experiment, a scientist wanted to determine if miracle grow fertilizer helped roses to grow bigger and faster. She set up a controlled experiment using _____ as the dependent variable.

A

Rose growth

25
Q 
What is true about carbohydrates? 
A. Starches and sugars are examples
B. The monomers are starches 
C. Building blocks are amino acids
D. All are true
A

Starches and sugars are examples

26
Q 
Which sentence is true about proteins? 
A. They are polymers for amino acids
B. They carry genetic information 
C. Proteins are an energy source 
D. All are true
A

Proteins are polymers for amino acids

27
Q 
Which sentence is true about nucleic acids?
A. They are polymers of nucleic acids
B. They carry genetic information 
C. They are found in the nucleus
D. All are true
A

All are true

28
Q

When we change a variable in an experiment, is it an independent or dependent variable?

A

Independent

29
Q

Which is the phase in which two daughter cells are formed?

A

Telophase

30
Q

Which is the phase in which the nuclear envelope disappears and chromatin condenses?

A

Prophase

31
Q

Which is the phase in which the nucleus can be seen clearly and there are no chromosomes?

A

Interphase

32
Q

Which is the phase in which the centromeres split and sister chromatids are pulled apart

A

Anaphase

33
Q

Which is the phase in which chromosomes move to the equator of the spindle apparatus?

A

Metaphase

34
Q

What is the difference between animal and plant cells during cytokinesis?

A

Animals form a cleavage furrough

35
Q 
What is cancer? 
A. Abnormal cell cycle 
B. Different types of tissue
C. Results from mutation in the DNA 
D. All of the above
A

All of the above

36
Q

In what organisms are cell walls found?

A

Fungi, bacteria, plant

37
Q 
If a solution is hypertonic then \_\_\_\_\_
A. The solution is above strength 
B. The solution is below strength 
C. The solution is the same strength 
D. Both a and b
A

Solution is above strength

38
Q

What is the phenotype for a seed with the genotype RrYy

A

Round and yellow

39
Q

What is it called when an allele is not completely dominant over another?

A

Incomplete dominance

40
Q

What is it called when both alleles contribute to the phenotype of the organism?

A

Codominance

41
Q

What is it called when genes have two or more alleles?

A

Multiple alleles

42
Q

What is it called when two or more genes control a trait

A

Polygenic

43
Q

Which is not true about the human chromosome?
A. All chromosomes except the sex chromosomes are autosomal
B. Biologists use 46XX to indicate female
C. Males have one Y chromosome inherited from the mother

A

Makes have one Y chromosome inherited from the mother

From father actually

44
Q

What is Down’s syndrome?

A

Mental retardation. Trisomy 21.

45
Q

Nondisjunction can result in _____

A

Turners syndrome

46
Q

Huntingtons disease is caused by ______
A. An autosomal dominant allele
B. Results in a progressive lose of muscle control and mental function
C. Affects individuals after reproductive years
D. All true

A

All true

47
Q

Why is meiosis described as a process of reduction division?

A

The number of chromosomes are split in half, goes from diploid to haploid count

Biology (1 decks)

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