bruh (unit test)

what are stem cells

stem cells are unspecialized cells that have the capability of developing into specialized cells that perform specific functions

how can stem cells become specialized

Stem cells can become specialized through a process called differentiation, where they develop into specific cell types with unique functions. This process is regulated by various signals in the cell's environment.

compare and contrast embryonic stem cells and adult stem cells

• are both types of stem cells

state one practical use of stem cell research

they are involved in research for treatments like alzheimer’s disease and heart disease

what are meristematic cells

meristematic cells are an unspecialized tissue capable of dividing by mitosis. they are responsible for growing new parts of the plant.

define the term “tissue”

Tissues are a group of similar cells that have same specialized structure and function

what is the link between specialized cells and tissues

Specialized cells are grouped together to form tissues, which are collections of cells that work together to perform specific bodily functions. This link allows the organization and coordination of different cell types to carry out specialized tasks efficiently.

compare the structure and functions of epithelial tissue and epidermal tissue

both the epithelial tissues and epidermal tissue act as an outer protective barrier. For animals tissues, epithelial tissues are on the outside of the animal and protect its structure.

on the other hand for plants, epidermal tissues are the outer covering of the plant

what are the four types of animal tissues

• connective tissues

• nervous tissues

• muscular tissues

• epithelial tissues

what are the four types of plant tissues

• vascular tissues

• epidermal tissues

• meristematic tissues

• ground tissues

what are the three functions of the root?

• collect water from the soil

• transport water to the stem

• store food that’s made in other parts of the plant

describe the major job of the leaf, and explain how two tissues in the leaf work together to accomplish this job

The leaf's main job is photosynthesis, absorbing sunlight and carbon dioxide to make glucose. The palisade mesophyll captures sunlight, while the spongy mesophyll enables gas exchange and the diffusion of gases.

describe the 2 functions of a stem, and explain how the tissues in the stem work together to accomplish one of them stem functions

The two major functions of the stem are to support the leaves and the flower and to transport water and nutrients throughout the plant. Vascular tissue is the tissue that transport the substances around the plant.

what is the major function of a flower

The main function of a flower is to produce seeds through sexual reproduction

what organs in the digestive system are common to earthworms, perch, and frogs?

• Earthworms: Pharynx, Esophagus, Crop, Gizzard, Intestine

• Perch: Mouth, Esophagus, Stomach, Intestine

• Frogs: Mouth, Esophagus, Stomach, Small Intestine, Large Intestine

name one structure that is unique to the digestive system of the earthworm, perch, and frog

what is the diaphragm, and how is it involved?

The diaphragm is a muscle that is located below the lungs. During inhalation, it contracts and expands the chest cavity, allowing air to enter the lungs. During exhalation, the diaphragm relaxes, pushing air out of the lungs.

explain the role of diffusion in the process of gas exchange

explain how the excretory system eliminates waste

the excertory system eliminates waste by flitering out the unneccesary

define the term “homeostasis”

Homeostasis is when the body’s inner conditions are stable enough to function.

explain, using an example, how organ systems function in an interdependent way

For example, the respiratory and circulatory systems work together. To start, the respiratory system gives oxygen to the blood, which is then distributed by the circulatory system to deliver oxygen to cells so the tissues can breathe.

explain how the integumentary system and the circulatory system work together to maintain homeostasis while you are playing outside

explain how the respiratory, circulatory, and nervous systems maintain homeostasis while you are playing outside.

The respiratory system provides oxygen for energy production, the circulatory system delivers oxygen and nutrients to cells, and the nervous system regulates body temperature and coordinates responses to physical activity, all working together to maintain homeostasis during physical exertion.

explain how the respiratory, circulatory, and nervous systems maintain homeostasis while you are playing outside on a sunny day

explain how muscular and skeletal systems work together to maintain homeostasis while are playing outside on a sunny day