Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Science 8 > sci_mod 9-16 > Flashcards

sci_mod 9-16 Flashcards

1
Q

The speed at which the human population is growing decreases every year.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Every year since it has been studied, the amount of food per person on the earth has decreased.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

An organism is made of many eukaryotic cells and eats other, living organisms. To which kingdom does it belong?

A

Animalia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

An organism is composed of one prokaryotic cell and eats other, living organisms. To which kingdom does it belong?

A

Monera

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

An organism is made of many eukaryotic cells and makes its own food. It has roots, stems, and leaves. To which kingdom does it belong?

A

Plantae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

An organism is made up of one eukaryotic cell and eats only dead organisms. To which kingdom does it belong?

A

Fungi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Three strips of bacon are left lying on a table for 2 hours. The first is left uncovered. The second is salted. The third is salted and covered with plastic wrap. Which strip of bacon will be most contaminated by bacteria?

A

The first strip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What two parts of a plant cell work together to make turgor pressure?

A

The central vacuole and the cell wall.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When a plant wilts, does that mean it is dead?

A

No, it is not dead.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Is a cockroach a consumer, producer, or decomposer?

A

decomposer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Is a mosquito a consumer, producer, or decomposer?

A

consumer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Are peas a consumer, producer, or decomposer?

A

producer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

If you use lard or shortening (fats which are solid at room temperature) while you are cooking, are you using saturated fats or unsaturated fats?

A

saturated fats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the following does combustion require?

A

Oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

One half of a portion of DNA has the following sequence: thymine, cytosine, guanine, adenine, guanine, thymine.
What is the sequence of nucleotides on the other half of this portion?

A

adenine, guanine, cytosine, thymine, cytosine, adenine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What two things are produced by photosynthesis?

A

glucose and oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Metabolism produces energy, carbon dioxide, and _________.

A

water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

If a certain type of organism produces lots of offspring, what can you conclude about the level of danger that the organism experiences throughout the course of its life?

A

The organism likely lives a fairly dangerous life.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

If a person’s biceps could not relax but was constantly contracted, would his forearm be flexed or extended?

A

His forearm would be flexed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Classify this animal: A brown bear with a thick, fur coat.

A

mammal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Classify this animal: A salamander - an animal that has spots and breathes through its skin.

A

amphibian

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Classify this animal: A penguin - an animal that lives at the South Pole and has tight, waterproof feathers.

A

bird

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Organisms that eat living producers and/or other consumers for food.

A

Consumers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

A unit used to measure energy.

A

Calorie

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
The minimum amount of energy required by the body every day.
Basal metabolic rate
26
A consumer that eats both plants and other consumers.
Omnivore
27
What carbohydrates must be broken down into before they are burned.
Monosaccharides
28
The longest of the three basic kinds of carbohydrates.
Polysaccharides
29
Usually the last macronutrient that is burned by the body.
Proteins
30
Usually the second macronutrient that is burned by the body.
Fats
31
An organism that does not have a constant internal temperature.
Ectothermic
32
The most important organelle in the cell where you will find the DNA of the organism.
Nucleus
33
The smallest unit of life in Creation.
Cell
34
The smallest stable unit of matter in Creation.
Atom
35
A living system that is isolated from its surroundings and its contents continue to live and grow.
Biosphere
36
The process by which a living organism takes energy from its surroundings and uses it to sustain itself, develop, and grow.
Metabolism
37
Produces the cells that are in your blood.
Bone marrow
38
The process that forms your hair, nails, and the outer layer of your skin.
Keratinization
39
A body covering, typically made of a tough, flexible substance called chitin, that provides support and protection.
Exoskeleton
40
Two or more different organisms living together so that each benefits from the other.
Symbiosis
41
The portion of the skeleton that supports and protects the head, neck, and the trunk.
Axial skeleton
42
The sum total of all bones in the body.
Endoskeleton
43
Bones increase or decrease their mass as needed.
True
44
Which is composed of fats being stored by your body?
yellow bone marrow
45
Which produces the cells in your blood?
red bone marrow
46
Where is the red bone marrow found?
spongy bone tissue
47
What is the main difference between algae and plants? Which kingdom contains algae, and which kingdom contains plants?
Algae does not have specialized structures while plants do. Kingdom Protista contains algae and kingdom Plantae contains plants.
48
Why do endothermic organisms have a higher BMR than ectothermic organisms?
Endothermic animals have to expend their energy so they can keep their internal temperatures high.
49
Our body needs 20 amino acids. How many can our cells make own their own? How many must we consume in our food? What are those amino acids called that we must consume in food?
All I know about this question is that we need 9 of the 20 amino acids and that essential amino acids are amino acids that the body needs but cannot make. I also know that proteins are made by linking together amino acids. Vegetarians have a hard time getting those 9 essential amino acids because they only eat plants, and plants rarely have all of them. You can get those essential amino acids from animal protein easily.
50
If you are not eating enough protein, your body will start breaking down what kind of tissue to get the amino acids it needs? If your body has too many proteins that it needs, what will it turn into?
It will start breaking down muscle tissue. If it has too much, it will convert into carbohydrates or fats.
51
What are arrector pili?
It is the muscle at the base of the hair follicle. It is what we call goosebumps. It makes our hair rise to keep heat close to us.
52
From which chamber of the heart does deoxygenated blood leave on its way to the lungs?
right ventricle
53
If a sample of blood is oxygenated, did it most likely come from an artery or a vein?
artery
54
What cells in the blood aid the process of blood coagulation?
platelets
55
You are given a sample from a person's lungs. Looking at it under the microscope, you may see many little round sacs that are covered in capillaries. What structures are you looking at?
alveoli
56
When you exhale air, where does the air pass through first?
trachea
57
You are listening to a man and a woman singing. The man is singing loudly with a very low pitch. The woman is singing much more softly but at a high pitch. Which singer is passing more air over his or her vocal chords?
the man
58
Makes up the majority of the blood.
plasma
59
Contain hemoglobin.
red blood cells
60
Fight disease.
white blood cells
61
Organ that carefully control the levels of chemicals in blood.
kidneys
62
Blood vessels that carry blood away from the heart.
arteries
63
Tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and cells.
capillaries
64
Blood vessels that carry blood back to the heart.
veins
65
Where blood cells are manufactured.
bone marrow
66
A vitamin is a chemical substance essential for the normal working of the human body.
true
67
Although vitamins are essential to the functioning of our bodies, minerals are not essential.
false
68
The epiglottis is a vestigial organ.
false
69
A gland is a group of cells that prepare and release a chemical for use by the body.
true
70
A vaccine is a chemical messenger released in the bloodstream that sends signals to distant cells, causing them to change their behavior in specific ways.
false
71
The endocrine system is chiefly responsible for fighting disease.
false
72
The Autonomic nervous system is the system of nerves which carries instructions from the CNS to the body's smooth muscles, cardiac muscle, and glands.
true
73
The motor nervous system is the system of nerves which carries information from the body's receptors to the CNS.
false
74
Suppose you are looking through a microscope at a sample of living tissue. You watch the blood vessels and notice that the blood is going from oxygenated to deoxygenated as it passes through the vessels. What kind of blood vessels are you looking at?
capillaries
75
What cells in the lymphatic system produce antibodies?
B-cells
76
What cells in the lymphatic system give vaccines the ability to make people mostly immune from certain diseases?
Memory B-cells
77
A doctor has two medicines that fight the same disease. The first medicine is given if the patient has the disease. The second is given to patients who have never had the disease. Which of the two is a vaccine?
the second
78
Once blood enters the kidney through the renal artery, it delivers oxygen and nutrients to the kidney's cells and picks up their waste products. The following steps then happen. Put them into the proper order: (A)Chemicals and water are absorbed into the blood. (B)The blood is filtered. (C)Water and chemicals go into the renal pelvis, through the ureter, and into the bladder.(D)Nutrients, water, and chemicals travel through a nephron.
B,D,A,C
79
If many of the endocrine glands in the body begin to malfunction, just one gland might be responsible. Which gland might that be?
pituitary
80
Is vitamin C water-soluble?
yes
81
Is vitamin E water-soluble?
no
82
Is vitamin K water-soluble?
no
83
Can vitamin D be absorbed by the body even if it is not in any food that is eaten?
yes
84
Can vitamin C be absorbed by the body even if it is not in any food that is eaten?
no
85
Is vitamin E likely to build up to toxic levels if you take too many vitamin pills?
yes
86
In which organ does most of the absorption of nutrients occur?
small intestine
87
In which organ is the bolus turned into chyme?
stomach
88
In which organ is the undigested food turned into feces?
large intestine
89
Which organ produces the sodium bicarbonate that neutralizes the stomach acid in the chyme?
pancreas
90
Which organ moves the food around in the mouth to form the bolus?
tongue
91
Which organ produces bile?
liver
92
Produces hormones that regulate the basal metabolic rate
thyroid
93
Controls the pituitary gland.
hypothalamus
94
Produces hormones that control many of the endocrine glands.
pituitary
95
Produces insulin which enables glucose to enter the cells.
pancreas
96
Chemicals that travel across the synapse, transmitting a signal from the end of one axon to a receiving cell.
Neurotransmitters
97
Deforms the lens in the eye to adjust focus.
Ciliary muscle
98
The part of the autonomic nervous system which slows the heart rate.
Parasympathetic division
99
Converts the rocking motion of the ossicles into electrical signals that the brain interprets as sound.
Cochlea
100
Allows the different hemispheres of the brain to communicate.
Corpus callosum
101
Controls most of the high level thinking skills such as reasoning.
Cerebrum
102
Composed mostly of neuron cell bodies.
Gray matter
103
The spinal cord is protected by the _________ __________.
vertebral column
104
The brain is divided into halves called ______________s.
hemispheres
105
The __________ side of the cerebrum tends to be responsible for speaking, logic, and math.
left
106
In the majority of people, the right side of the body tends to be dominant.
true
107
The brain floats in liquid called cerebrospinal fluid.
true

Science 8 (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions