Science 1B
Which gas do animals need to carry out life processes?
1. Oxygen
Which term is defined as tall the chemical reactions that are required to sustain life?
1.Metabolism
What category does a starfish belong to?
10. living
What category does a plastic bottle belong to?
11.Non living
Which of the following structures demonstrates the highest level of organization in organisms?
17. small intestines
Which life process is classified as autotrophic n some organisms and heterotrophic in other organisms?
19. nutrition
What observation could lead to the conclusion that an object is nonliving?
2. It cannot perform metobolic procceses
Which phrase is an example of autotrophic nutricion?
21. an apple tree making it's own food
Living organism must be able to obtain materials, change the materials into new forms, remove poisons, and move needed material from on place to another. Many of these activities directly require.
22. energy released from ATP
The energy used to obtain, transfer, and transport materials within an organism comes directly from
23. ATP
Carbon dioxide makeup less than 1 percent of Earth's atmosphere, and, oxygen makes up about 20 percent. These percentages are maintained most directly by
25. respiration photosynthisis
Because mushrooms absorb nutrients from decaying leaves, the are classified as?
27. heterotrophs
what happens during cellular respiration?
30 Orginisms use oxygen to get energy from food, some of which is released as heat
If a human system fails to function properly, what is the most likely result?
33 A disturbance in homostatis
To communicate between cells, many multi-cellular animals use
34.nerve signals hormones
If body temperature is too high, some blood vessels increase in size and sweat glands will excrete sweat resulting in a lower body temperature. These changes are an example of
35. maintaining homostatis
The jackrabbit is a desert mammal. The jackrabbit's circulatory system increases blood flow to the ear during hot days. The blood flow to the ears decreases during cool or cold nights. This circulation pattern is most directly related to ?
37. Homeostatis
Like humans, animals including dogs and cats get goose bumps. On a cold day, these goose bumps cause their coats to expand creating a layer of insulation. If the animal is scared, the coat will also expand making the animal look larger to predators. These responses serve as examples of
38. Detection and responce to stimuli
The hormone testosterone can affect only cells with
40. appropiatley shaped receptors
The ability of the human body to keep blood-sugar levels within a fairly narrow range, despite the intake of meals high in carbohydrates, is an example of
41. Homeostatis
Riding a bicycle requires balance and constant adjustment and monitoring by the rider in order to continuing cycling. Successfully riding a bike most directly results from the ability to
42. detect and respond to change
Both a deer and a tree react to changes in their external surroundings, helping them to maintain a constant internal environment. This statement describes
43. Homeostatis
The shape of a protein molecule directly determines its
44. Funcions inside and out of cells
The size of an organisms is primarily dependent on
45. Number of cells in his body
Which graph best illustrates the body temperature in an individual maintaining dynamic equilibrium?
47. [3]
The accompanying diagrams represent two molecules that are involved in metabolic activities in some living cells. The shape of each of the molecules is important because?
48. The shape of a molocule determineshow it functions in chemical reactions
Natural selection is best described as?
50. differences in survival rates as a result of different inhereted characteristics
All members of the same species have similar appearances. What other characteristic do members of the same species have in common?
51.they reproduce within there own species
Male turkeys are birds that naturally strut and display their large tail feathers, which attracts female turkeys , This display is an example of? ?
54. a behavioral adaptations
The Crucian carp, a Scandinavian fish, thrives in shallow ponds that freeze during winter, While other creatures in the pond die from lack of oxygen, these carp are able to obtain energy through a biochemical pathway that does not require oxygen. This characteristic is an example of a
55. favorable adaptive trait that has led to increased survival
The females of a certain species of turtles will sneak into a next of alligator eggs to lay their own eggs and then leave, never to return. When the the baby turtles hatch, they automatically hide from the mother alligator guarding the nest and to the nearest body of water when it is safe to do so. Which statement best explains the behavior of these baby turtles?
56. more of turtle's ancestors who acted in this way survived to reproduce , passing this behavorial trait to their offspring
In several species of birds, the males show off their bright colors and long feathers. The dull-covered females usually y pick the brightest colored males for mates. Male offspring inherit their father's bright colors and long feathers. Compared to earlier generations, future generation of these birds will be expected to have a greater proportion of
61. bright colored males
Caffeine is a compound found in the seeds of many different plants, such as coffee beans, cola nuts and cocoa beans, (the ounce of chocolate). The presence of this chemical in all three types of plants suggests that these pants.
62.share a common ancestory
The wood of a which a wooden desk is made ?
9. is non living
What is a species?
A species is a group of similar-looking organisms that can interbreed and produce fertile offspring.
How does an organism undergo Growth?
An organism undergoes Growth through mitotic cell division because there is an increase in cell size.
IN biology what does development mean?
Changing from a single cell into a multi-cellular organism. Development involves the differentiation of cells.
What is the difference between growth of a non-living and a living thing.
Growth on a living thing means producing more cells. Growth of a non-living thing would be a snowball getting larger.
Growth
Growth results in an increase in the amount of living material and the formation of new structures. -Getting larger and repairing damaged body parts. -Over time organisms grow and take on the characteristics of their species.
Development
Is when an organism transforms itself from a lone cell into a more complicated multi-celluar organism. Changing features Examples: butterfly; puberty
What is sexual reproduction?
Sexual reproduction requires that two cells (sperm and egg) unite to reproduce the first cell fo the new organism
What determines the amount of growth and development?
The amount can be limited by how well an organism synthesizes and assimilates. 1) synthesizes- combines simple substances to form more complex substances- building up 2) assimilates- uses the materials taken into and synthesized by the body.
Do all organisms show growth and development?
Yes, all organisms show growth and development The degree of growth and development depends upon 1)the characteristics of the individual species AND 2)the amount of available energy
What are two basic kinds of reproduction?
sexual and asexual reproduction
Why do animals move around?
to searchfor food; to find shelter; to escape from predators/enemies
