Healthy human lungs look pink and spongy from the outside. The left lung is a little smaller than the right lung to make room for the heart. The lungs and heart are both protected by the rib cage. In the lungs, each main bronchus branches off into many smaller bronchi. The bronchi become smaller and smaller, and the smallest bronchi are called bronchioles. There are about 30,000 bronchioles in each lung, each about the same thickness as a strand of hair. The inhaled air eventually ends up in tiny air sacs called alveoli at the end of each bronchiole. There are about 300 million alveoli in each lung. They are covered with capillaries, tiny blood vessels that are only one cell thick. Oxygen travels from the alveoli through the capillaries to the bloodstream, heart and other cells.

Which of these best represents the progression of bronchi, bronchioles and alveoli in the lungs?

A
tree trunks that become smaller branches and twigs

B
a tight flower bud that has opened into a full bloom

C
whole apples that are sliced into separate wedges

D
a bridge that crosses two rivers

helpppp plssss !!! if u can’t see the pic don’t bother answering !!! hurryyy

I will give brainlst if the answer is right.

how many parts to a virus?

can someone please help me explain I don't understand

In herbaceous stems, which tissue carries water from the roots to the leaves?
bark
phloem
seed
xylem

HELP ASAP
How does water help plants and animal cells to survive?

Animal use oxygen to produce water
Cytoplasm is made up largely of water
Chlorophylls is made up largely of water
Plants use oxygen to produce water

Lets see if you can Answer this test!

Question 1(Multiple Choice Worth 4 points)
(06.01 HC)

Two methods of biotechnology used by scientists are described below.

Process A: Inserted a pesticide gene into a soybean
Process B: Used plants and microorganisms to create a new biofuel

Which process is likely to be more advantageous in conservation?

Process B because it will reduce our dependency on fossil fuels
Process A because it will increase the number of pests in the environment
Process B because it will cause an increase in fossil fuel pollution
Process A because more food will increase the global population
Question 2(Multiple Choice Worth 4 points)
(06.04 LC)

Which type of reproduction involves only one parent?

Asexual
Cytokinesis
Meiosis
Sexual
Question 3(Multiple Choice Worth 4 points)
(06.03 LC)

What tool is used to track inherited traits between parents and offspring?

Allelic pair
Family tree
Pedigree chart
Punnett square
Question 4(Multiple Choice Worth 4 points)
(06.02 LC)

Which of the following personal health conditions can be controlled by exercise and diet?

Heart disease
Sickle cell anemia
Skin cancer
Sunburn
Question 5(Multiple Choice Worth 4 points)
(06.02 MC)

Which of the following is true about the offspring of an organism Y that reproduces sexually?

The offspring would show all the traits of Y.
The offspring would be identical in size to Y.
The offspring would have identical DNA as Y.
The offspring would show some traits of the parent other than Y.
Question 6(Multiple Choice Worth 4 points)
(06.04 MC)

A few characteristics of a type of reproduction are shown below:

1. Occurs in all body cells
2. Two daughter cells are formed
3. Chromosomes arrange equally on either side of the equator
4. The daughter nuclei each have half the number of chromosomes as that of parent cells
5. Is necessary for sexual reproduction

Which of the above are characteristics of meiosis?

1, 2, and 3
1, 4, and 5
2, 3, and 4
3, 4, and 5
Question 7(Multiple Choice Worth 4 points)
(06.02 LC)

Which of the following hereditary conditions is characterized by abnormally shaped blood cells?

Acne
Heart disease
Sickle cell anemia
Type 1 diabetes
Question 8(Multiple Choice Worth 4 points)
(06.01 MC)

What is the likely advantage of growing a genetically modified variety of tomato that remains fresh over several days?

Post-harvest losses due to delayed transportation would be reduced.
Disease-causing pests may never be able to attack such a variety of tomato.
When consumed it would provide more nutrients than the regular variety.
When consumed it would improve the quality of life of people with genetic disorders.
Question 9(Multiple Choice Worth 4 points)
(06.01 HC)

A corn plant has been genetically engineered. It produces pollen that can make its own toxins. These toxins protect the corn plant against pests. What is a likely impact on the environment around the corn plant?

Bird and butterfly populations around the area may increase.
The concentration of pesticides in a nearby lake would increase.
Newer strains of pesticide-resistant pests may develop.
The carbon dioxide level would increase in the area.
Question 10(Multiple Choice Worth 4 points)
(06.04 MC)

Some steps in cell division are shown below:

1. Chromosomes condense and pair up
2. Segments of DNA of sister chromatids twist and cross
3. Exchange of DNA occurs between chromosomes
4. Four daughter cells are created that are haploid

Which of the following steps is least likely to occur during meiosis 1?

Step 1
Step 2
Step 3
Step 4
Question 11(Multiple Choice Worth 4 points)
(06.01 MC)

Which type of biotechnology would a dairy farmer use to mate the cows at his farm with genetically superior bulls to produce offspring that give high-quality milk?

Genetic engineering because the genes of the cows are altered
Genetic engineering because cows with desirable traits are produced
Artificial selection because offspring with desirable traits are produced
Artificial selection because the process reduces the production time of offspring
Question 12(Multiple Choice Worth 4 points)
(06.02 HC)

In fruit flies the allele for long wings (L) is dominant and the allele for short wings (l) is recessive. What is the likely genotype of a fruit fly with long wings?

Either LL or Ll
Either Ll or ll
Only LL
Only ll

i need help

is it right to like girls

does Growth and repair in mitosis, meiosis, or both

I will give brainly to correct answer and if you dont get brainly lmk if you want me to make a fr33 p01nts questions so you get brainly
Which process does a plant use to release energy from food?


photosynthesis

reproduction

respiration

transpiration

PLS HELP OR ILL FAIL SCHOOL
ill give brainliest and help you with wtv

What two physical structures help protect the plant and animal against environmental conditions?(11 points) Keep it simple plz

PLEASE HELP ME Which of these attacks the germs in your body when you are sick?
A. skin
B. lymph nodes
C. white blood cells
D. bone marrow

Someone help pls will mark Brainly and 20+ points


In your own words what is the function of the cell membrane?

Plssssssss helppppppppppppp

How is mankind amping up the greenhouse effect?

what is the main function of the skin

1-7 please i really need help

Describe the inheritance pattern of blood types. Describe the inheritance type of different hair colors. Why are each unique?

Which type of cell has an organelle that controls the movement of materials in and out of the cell and maintains homeostasis?
Group of answer choices

1. animal
2. plant
3. both

Viruses vary in size and structure, but what is one thing they have in common?
a. they destroy the host cell
b. they all cause terminal illness
c. they all hijack a host cell
d. none of the above

How?

Water is clear and clouds are white, BUT clouds are made of water...

A: A bright, egg shaped form. B: Dust, gas, and stars in a nonuniform arrangement. C: Dust, gas, and stars in the shape of a pinwheel.
Use the drop-down menus to identify each type of galaxy pictured.
Galaxy A:
Galaxy B:
Galaxy C:

What types of plants and animals do you think live at Guadalupe Park in Texas (https://www.nps.gov/gumo/learn/nature/index.htm)?

How might the weathering and erosion that's occurring there affect the plant and animal life over time? Are these changes short-term or long-term?

Answer these questions in a few short paragraphs.

How are traits passed to offspring?

What is the function of hormones?

How do different climate zones respond to severe weather?
What challenges does each climate zone face?
How can that climate zone be best prepared for severe weather?
Which climate zone is the safest to live in? Why?

Write an essay pretending to be an Ecologist studying either the American Alligator or the Green Sea Turtle. As an ecologist what is important for you to study? What is the habitat of your animal? Is the animal an endangered species? Can the species be saved? If it is being saved how is the species being saved?

Due at 3:05 pm central time today.

IM BEGGING YOU FOR YOUR HELP ( please make it fast) Which of the following is an example of an organ system found in the human body?
circulatory
skull
stomach
heart