PLEASE I NEED HELP IN THIS!! THIS WORKSHEET HAS 50 QUESTIONS BUT I ONLY NEED HELP WITH THESE. DONT JUST TYPE IN A RANDOM ANSWER I NEED A 1-2 BRIEF EXPLANATION FOR EACH TO WHY THEY ARE CORRECT!!
(I NEED HELP WITH 21 QUESTION SECOND PART IS ON MY ACCOUNT)


1. All of the following are true about muscle tissue EXCEPT: *
a) Heart muscles are called cardiac muscles and are not voluntary.
b) Skeletal muscles are usually attached to bones and assist with voluntary movements.
c) There are no striations in smooth muscle which assist with involuntary movement.
d) When a muscles is relaxed, myosin and actin filaments are attached.

2. The development of the male reproductive system occurs in coordination with other human systems. Which of the following is an example of this coordination? *
a) The endocrine system releases the hormone testosterone.
b) The muscular system strengthens the uterine wall.
c) The circulatory system restricts blood flow to the testes.
d) The excretory system removes urea from the blood.

3. How does puberty affect the male and female reproductive systems? *
a) The male reproductive system develops into the female reproductive system during puberty.
b) The male reproductive system produces sperm, where as the female reproductive system produces eggs and nourish a developing embryo
c) The female reproductive system develops during puberty when the thyroid gland releases FSH and LH.
d) The female reproductive system stimulates cells within the ovaries to produce increased amounts of testosterone to start producing egg cells.

4. How does a feedback mechanism regulate the activity of the endocrine system? *
a) A feedback mechanism releases hormones in response to rising levels of other hormones to maintain homeostasis.
b) The endocrine system shuts off when the feedback mechanism shuts off.
c) A feedback mechanism regulates the endocrine system by strengthening the original stimulus.
d) A feedback mechanism changes the external environment to maintain homeostasis.

5. What is the role of neurons in the nervous system? *
a) Neurons heal damaged nerves.
b) Neurons transmit messages in the form of electrical impulses.
c) Neurons are involved in the autonomic nervous system, but not the somatic nervous system.
d) Neurons are the the sodium-potassium pumps involved in the nerve impulse.

6. Environmental management may include which of the following? (Check all the applicable boxes. There may be more than one answer). *
a) Public presentations
b) Field and lab research
c) Oversee projects related to the protection and conservation of natural ecosystems and human health.
d) Consult with businesses and government.

7. Which of the following is NOT an organ of the human male reproductive system? *
a) Testes
b) Vas deferans
c) Urethra
d) Nephron

8. Which of the following is NOT an organ of the human female reproductive system? *
a) Vagina
b) Urinary bladder
c) Ovaries
d) Fallopian tubes

9. Which is the correct order of development? *
a) gastrulation, egg, zygote, eight cell, blastula, morula
b) egg, zygote, morula, eight cell, blastula, gastrulation.
c) egg, zygote, eight cell, morula, blastula, gastrulation
d) zygote, blastula, egg, morula, eight cell, gastrulation

10. Biotechnology careers include all of the following EXCEPT: *
a) Microbiologist
b) Process development scientist
c) Health engineer scientist
d) Biomanufacturing specialist

11. The human brain contains different regions that control specific bodily functions. On a model, how could you identify the region of the brain that is responsible for voluntary activities of the body, intelligence, learning, and judgment? *
a) This region is the thalamus, between the brain stem and the cerebrum.
b) This region is the brain stem, connecting the brain to the spinal cord.
c) This region is the cerebellum, divided into left and right hemispheres.
d) This region is the cerebrum, the largest region in the brain.

12. Forensic science may prove the existence of a crime, the perpetrator of a crime, or a connection to a crime through all of the following EXCEPT: *
a) the testimony of a forensic scientist
b) an attorney's argument
c) administration of tests
d) examination of physical evidence

Answer:

1. D.

Explanation:

A, B, and C are correct

Myosin is attached to actin filaments when muscles are in motion, not relaxed.

Which human activity is correctly paired with the greenhouse gas that it increases?
rice cultivation and water vapor
landfilling and carbon dioxide
deforestation and methane
sewage treatment and nitrous oxide

Drag each label to the correct location on the image
Arrange the symbols to form a DNA molecule.
5
3
5
3'

why do lichens and mosses get mostly replaced by larger plant species during succession

OPEN ENDED QUESTION
Why is the Cuyahoga River fire an
important event in dealing with water
pollution?

Which statements describe floods and wildfires? Check all that apply.
(Select all that apply)
A.Both are natural hazards that affect Florida.
B.Both may affect coastal and inland regions.
C.Both are caused by drought conditions.
D.Both are made worse by the presence of muck
E.Both may be caused by thunderstorms.
F.Both may cause property destruction.

Why should the United States be concerned about air pollution in china

Approximately how long ago did our current era begin ? O A. 1 million years OB. 4.5 billion years C. 65 million yearsO O 100, 000 years

I need answers for 5 and 6 please

What did Mendel's cross-pollination of pea plants prove?


A. Inheritance of certain factors is dependent upon the genetic code.


B. Certain factors are dominant, and other factors are recessive.


C. All the cells in an organism carry the same hereditary factors.


D. Crossing a tall plant with a tall plant will always result in a tall plant.

9 Light cannot escape the intense gravitational pull of a
black dwarf
red giant
main-sequence stan
black hole

what air mass carries warm, moist air
​

The kingdom Protista contains the greatest variety of organisms, ranging from single-celled creatures to multicellular ones. Some people consider the kingdom Protista to be a
kingdom into which an organism is classified simply because it does not fit anywhere else. What is most likely to happen to this kingdom in the future?
A. This kingdom will likely be changed into a domain
B. This kingdom will likely be further divided into various new kingdoms.
C. This kingdom will disappear.
D. This kingdom will be merged with another one.

5. In a food web in a freshwater ecosystem, shrimp
and mayflies eat water plants. Leeches eat
shrimp. Trout eat mayflies. Which organism is a
producer?

Many fish in the lake die due to an increase in water temperature. What Limiting Factor is this an
example of? *

A. Competition

B. Predation
C. Temperature
D.Natural Disaster

​

Birds, lizards, and amphibians are very different groups of animals. However, these groups share some qualities that help them survive. Which of the following is an example of such a quality? A. Birds, lizards, and amphibians have fur to keep their bodies warm. B. Birds, lizards, and amphibians produce milk to feed their young. C. Birds, lizards, and amphibians reproduce by laying eggs. D. all of these

Chargaffs rule states

Humans rely on the ocean for a wide variety of resources. However, many human activities impact
ocean ecosystems. Although some of these impacts have positive consequences, many lead to
negative consequences. Below is a list of human activities and a list of some consequences of
those activities, Match each activity with the consequences it can cause. Keep in mind that human
activities may have several consequences.

Because the trees that produce the sap to make rubber need to be cut down to make it, rubber is considered a nonrenewable resource.

TRUE

FALSE

Please help me!!

Write about the following words using the format provided ( state if term is know by another name or expression; state its composition; state its function; state its location; state its significance )
Example: Cell membrane - ( Plasma Membrane; Phospholipid bilayer...... )

Words: Cell membrane, nucleus, chromatin, nuclear envelope, nuclear pore, nucleolus, cytoplasm, mitochondrion, ribosome, endoplasmic reticulum, golgi complex, vacuole, lysosome, centriol, cell wall, plastid, chloroplast, chromoplast, leucoplast​

During which process is converted into a sequence amino acks protein production?

Which of the following identifies the most important reason why the percentage of deaths due to infectious diseases dropped from 1970 to 2015?
Group of answer choices

A.The number of people living in poverty fell as nations became increasingly more developed.

B.More people moved into urban areas, and fewer people remained in disease-prone rural areas.

C.More children were immunized against the major infectious diseases.

D. The use of pesticides became increasingly effective at killing biological threats.

The oak and the maple are two different species of trees that also belong to different genera. However, these oak and maples do share many characteristics. Based on their similarities, which levels of classification would they share?

How many ATP are generated in the electron transport chain?
O 2
04
O 32
0 36

How/why is ecosystem diversity important?

Select the correct answer.
Which organ connects the kidney to the urinary bladder?
A gallbladder
B.
rectum
renal pelvis
ureter
Е.
urethra

Tiny structures inside of cells, such as ribosomes or chloroplasts that have specialized roles are called

hich of the following organisms receives at least some energy from plants?
A.
coyotes
B.
rabbits
C.
deer
D.
all of these

1pt Which of the following cells would be produced by meiosis?
A. a heart cell
B. an eye cell
C. a sperm cell
D. a skin cell

FIRST PERSON TO ANSWER GETS BRANLYSEST After Hunter drank a glass of milk, sugar levels in his blood increased. This stimulated the hormone insulin to be released. Insulin helped the sugar move from his blood into cells, so his blood sugar levels decreased. Which statement explains what happened next? Positive feedback caused his pancreas to stop secreting insulin. Negative feedback caused his pancreas to stop secreting insulin. Negative feedback caused his pancreas to produce more insulin. Positive feedback caused his pancreas to produce more insulin.

pleaseeeee helpppppppppp