Question

The carbon that plants need for photosynthesis comes from
carbon molecules that the plant produces.
carbon atoms from the breakdown of food.
carbon molecules dissolved in water.
carbon dioxide gas in the atmosphere.

Answer 1

Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis. During the process of photosynthesis, plants release oxygen into the air. People and animals need oxygen to breathe.

Carbon Dioxide.
Plants use Carbon Dioxide, water and sunlight to create food and then release oxygen as a waste product, which we need to breathe.

The carbon dioxide comes from carbon dioxide gas in the atmosphere.

Answer 2

D

Answer 3

can i ask a few more @sarah2453

Answer 4

or @shaniahn

Answer 5

sure

Answer 6

Which of the following is a product of the photosynthesis reaction?
fructose
carbon dioxide
glucose
lactose

Answer 7

@shaniahn

Answer 8

C. Glucose

Answer 9

c

Answer 10

correct


The cell pictured above most likely came from which of the following organisms?
a shark
a pneumonia bacteria
a human
an Elodea plant

look at the attached file

Answer 11

@sarah2453 and @shaniahn

Answer 12

an elodea plant

Answer 13

D. An Elodea Plant

It is green because of the Chloroplasts, which are found in plants

Answer 14

correct

The cell pictured above most likely came from which of the following organisms?
fungi
plant
bacteria
human


look at the attached file

Answer 15

@sarah2453 and @shaniahn

Answer 16

Plants, it has Chloroplasts

Answer 17

incorrect human
A person touches a hot surface with his hand and his hand springs back. Which two systems are operating?
musculoskeletal system and endocrine system
nervous system and cardiovascular system
cardiovascular system and endocrine system
nervous system and musculoskeletal system

Answer 18

D.

Answer 19

correct
The respiratory system is responsible for
taking oxygen from the air into the body and removing carbon dioxide.
processing food into energy.
taking nutrients, oxygen, and water to the body.
taking carbon dioxide from the air into the body and removing oxygen.

Answer 20

A

Answer 21

correct
The muscles of the body are part of the musculoskeletal system but would not operate without the _____________ system providing the impulses that cause the muscles to act.
nervous
cardiovascular
reproductive
respiratory

Answer 22

Nervous

Answer 23

I have to go now, Im sorry

Answer 24

ok thanks @sarah2453

Answer 25

The purpose of the digestive system is to break down food into simple molecules that the _______ of the body can use.
microorganisms
chemicals
cells
enzymes

@shaniahn

Answer 26

cells

Answer 27

correct

Which of the following sequences represents the proper levels of organization (from simplest to most complex) in multicellular organisms?
cells, tissues, organs, organ systems
tissues, organ systems, organs, cells
tissues, cells, organs, organ systems
organ systems, organs, tissues, cells

@shaniahn

Answer 28

A i think

Answer 29

correct
Which of the following structures forms a protective layer between the environment and the inside of a body?
bone
skin
muscle
blood vessel

Answer 30

@shaniahn

Answer 31

skin

Answer 32

correct

The ______ breaks down large food particles into very small particles.

These small particles are absorbed into the bloodstream through the ______.
stomach; small intestine
digestive system; nervous system
small intestine; stomach
mouth; kidneys

@shaniahn

Answer 33

B

Answer 34

incorrect a

The skin acts as a physical barrier and prevents foreign substances entering the body. In which system is the skin playing a role by performing this function?
immune system
excretory system
digestive system
nervous system

Answer 35

The circulatory system is responsible for
carrying nutrients, water, and oxygen to all the cells.
taking oxygen from the air into the body and removing carbon dioxide.
sending and receiving messages.
processing food into energy.

@shaniahn

Answer 36

A

Answer 37

correct
The ________ plays a central role in the circulatory system. It consists of four ________: two for receiving blood and two for pumping blood.
heart, veins
heart, chambers
kidney, veins
kidney, chambers

Answer 38

@shaniahn

Answer 39

A i think

Answer 40

What are the most basic building blocks of all organisms?
tissue
organs
blood
cells

Answer 41

@shaniahn

Answer 42

do u know @shaniahn

Answer 43

cells

Answer 44

correct

The main purpose of the endocrine system is to produce:
hemoglobin.
white blood cells.
hormones.
neurons.


@shaniahn

Answer 45

hormones i think

Answer 46

The skin acts as a physical barrier and prevents foreign substances entering the body. In which system is the skin playing a role by performing this function?
excretory system
immune system
nervous system
digestive system
@shaniahn

Answer 47

immune system

Answer 48

correct
The purpose of the digestive system is to break down food into simple molecules that the _______ of the body can use.
microorganisms
chemicals
cells
enzymes
@shaniahn

Answer 49

cells

Answer 50

correct

n a living organism, what is a tissue?
the shell or skin of an organism

a group of similar cells that perform a common function

a group of organs that regulates the body's responses to stimuli

smallest unit that can carry on the activities of life

Answer 51

@shaniahn

Answer 52

a group of similar cells that perform a common function

Answer 53

correct
he nervous system is the major ______ system of the body.
protective
control
transport
output

Answer 54

@shaniahn

Answer 55

transport i think