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