Part of our body serves as a lever, a kind of simple machine?

The selectivity of the cell membrane is most closely associated with the maintenance of _______.

Breathing organs of plants that are located in the stems and trunks.

Which modified stem is used for the storage of food.

What animals belong to the order primates?

We feel warmer just before it rains because _____

Most of the reactions involved in aerobic respiration occur in the

Which of the following criterion is used to distinguish between two species?

In the process of evolution, the effect of the environment is to:

Hormone that stimulates the secretion of milk?

The fact that large numbers of mitochondria are observed in the tubule cells of nephrons suggests that the nephron is involved in the process of:

Some vines can climb posts easily because they respond positively to touch. Such response is termed:

Some plants have waxy leaves due to the presence of cutins. Which is a characteristics of cutin?

A vegetable grower is selecting good squash seeds that will surely germinate. What is usual practice?

We should avoid indiscriminate cutting of trees because:

Type of joint responsible for strengthening or bending our arms and legs?

Which is the correct hierarchy of ecological organization?

Pure water is neither acidic nor basic, that is, it is neutral. It has a pH of _____

In a hydrologic cycle, what processes must occur in order to complete the cycle?

Which of the following clues would tell you whether a cell is prokaryotic or eukaryotic?

Which is an effective method of preventing soil erosion from a hill?

Given a group of organism, which among them can be considered a population?

Which site of cellular respiration are considered the power house of eukaryotic cells?

What is the composition of the core of the earth?

During germination, what gas is needed most by the sprouting seeds?

After fertilization which part of the flower develops into a fruit?

Mammals are vertebrates with mammary glands. Which of the following does not have mammary glands?

Which of theses is NOT an insect?

What is the structural adaptation of birds that enables them to fly at high altitudes easily at less effort?

What is the outstanding characteristics among mammals that are preyed upon by other mammals for food?