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Grade 7 Semester 1 Vocab Review Flashcards | StudBud
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Grade 7 Semester 1 Vocab Review
Grade 7 Semester 1 Vocab Review
58 terms
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1
Endocytosis
a vesicle's contents are released outside the cell
taking substances into a cell by surrounding it by a cell membrance
2
Haploid and diploid cells have the same number of chromosomes
True
False
3
A scientific theory is an explanation of things based on many observations and experiments.
False
True
4
A virus can copy themselves without a host cell
False
True
5
Sperm cells are female sex cells
True
False
6
Experimenting with biological and chemical methods to change the DNA that makes up a gene is genetic engineering
False
True
7
Eggs are formed in the female reproductive organs
False
True
8
Metabolism is the total of all chemical reactions in an organism
False
True
9
A recessive factor
R
Rr
r
RR
10
polygenic inheritance
Blood type in humans are an example
when a group of gene pairs acts together to produce a trait
when the offspring of two homozygous parents show an intermediate phenotype
When a red and white allele produces a pink allele
11
Respiration is the breaking down of food molecules for energy
True
False
12
A mutation is any permanent change in the DNA sequence of a gene or a chromosome of a cell
True
False
13
organism
Any living thing
keeping the proper internal conditions no matter what is happening outside
The smallest unit of all living things
14
variable
The standard wo which the outcome of a test is compared
something in an experiement that can change
a predicition that can be tested
The series of procedures that scientists use to solve problems
15
Enzymes are a protein that regulates chemical reactions in a cell
True
False
16
incomplete dominance
When a group of gene pairs act together to produce a trait
Blood types in humans are an example
Hair and eye color are examples
when the offspring of two homozygous parents show an intermediate phenotype
17
Zygote is the cell that is formed after mitosis takes place
True
False
18
An allele inherited on an x or y chromosome is called a sex-linked gene
True
False
19
Genotype is the way an organism looks and behaves
False
True
20
Sexual reproduction
two body cells come together
two sex cells come together
cells that have different number of chromosomes
cells that have the same number of chromosomes
21
Diffusion is the movement of water molecules from high concentration to low concentration until equilibrium is reached
False
True
22
A virus is
nonliving
living
23
A dominant factor is represented by an uppercase letter
False
True
24
Chromosome- structure on the nucleus that contains the hereditary material
True
False
25
Gene
different forms of a trait
section of DNA on a chromosome
the study of how traits are inherited
the passing of traits from parents to offspring
26
Asexual reproduction
requires one organism
requires two organisms
27
phenotype is an organism's genetic makeup
True
False
28
A law is a statement about how things work in nature that seems to be true only some of the time
False
True
29
Hypothesis
The standard to which the outcome of a test is compared
The series of procedures that scientists use to solve a problem
a prediction that can be tested
something in an experiment that can change
30
Fertilization is the joining of egg and sperm cells
False
True
31
equilibrium
when molecules are the same on either side of the membrane
when molecules are not the same on either side of the membrane
32
An organism that has two different alleles for a trait is heterozygous
False
True
33
Passive transport
never use transport proteins
The movement of substances through the cell membrane using energy
The movement of substances through the cell membrane without energy
Always use transport proteins
34
osmosis
the movement of molecules from low to high concentration
the movement of water molecules from high to low concentration
the movement of water molecules from low to high concentration
the movement of molecules from high to low concentration
35
A virus is a strand of hereditary material surrounded by a protein coating
False
True
36
Biogenesis is the theory that living things come only from other living things
True
False
37
An organism with two alleles that are the same
Rr
rR
heterozygous
homozygous
38
Most inorganic compounds are made from elements other than carbon
True
False
39
Phylogeny
The largest classification group
evoultionary history of an organism
group of similar species
two-word naming system
40
mitosis
forms sex cells
the nucleus divides to form four identical nuclei
the nucleus divides to form two identical nuclei
has 46 pairs of chromosomes
41
Meiosis
produces sex cells
produces body cells
Asexual reproduction
produces diploid cells
42
Heredity
passing of traits from parent to offspring
Different forms of a trait that a gene may have
the study of how traits are inherited from parent to offspring
recieving different alleles from different parents
43
Cell
keeping the proper internal conditions no matter what is happening outside
Any living thing
The smallest unit of an organism
44
Homeostasis
Any living thing
The smallest unit of an organism
keeping the proper internal conditions no matter what is happening outside
45
allele
The section of DNA on a chromosome
the study of how traits are inherited
the passing of traits from parents to offspring
different forms of a trait that a gene may take
46
When cells do not have enough oxygen fpr respiration, they use a process called
metabolism
photosynthesis
fermentation
47
photosynthesis
consumers use light energy to make sugars which they use as food
chemical reactions that break down food molecules into simpler substances
producers use light energy to make sugars which they use as food
48
RNA
has the bases A, G, C, T
has 3 main kinds: mRNA, rRNA and tRNA
Contains the sugar deoxyribose
has the same helix structure as DNA
49
control
the standard to which the outcome of a test is compared
The set of procedures that scientists use to solve a problem
a prediction that can be tested
something that can be changed in an experiment
50
Organic compounds always contain carbon and hydrogen
False
True
51
Diploid
Have half the number of chromosomes
Have 26 choromosomes
Have pairs of similar chromosomes
Have 46 pairs of chromosomes
52
Active transport requires energy to move materials through the cell membrane
True
False
53
Spontaneous Generation is the theory that living things come from nonliving things
False
True
54
mixture
combination of substances that retain their own properties
formed when two or more substances are mixed evenly
substances that will eventually separate with one sinking to the bottom
55
DNA contains information for an organism's growth and function
True
False
56
A hybrid recieves different alleles for a trait from each parent
True
False
57
Genetics os the passing of genes from parents to offspring
False
True
58
Scientific Method
The standard to which the outcome of a test is compared
A prediction that can be tested
Something in an experiment that can change
the series of procedures scientists use to solve problems
