consider your knowledge about the cell membrane and check all of the true statements below. Check All That Apply Cell membranes are present in only two of the three domains of life.Cell membranes are present in only two of the three domains of life. In water, phospholipids spontaneously arrange into a bilayer.In water, phospholipids spontaneously arrange into a bilayer. The area within a phospholipid bilayer, near the fatty acid tails, is hydrophilic.The area within a phospholipid bilayer, near the fatty acid tails, is hydrophilic. Steroids in cell membranes allow the membrane to be more fluid.Steroids in cell membranes allow the membrane to be more fluid. Phospholipid bilayers surround all eukaryotic cells.Phospholipid bilayers surround all eukaryotic cells. Membrane proteins offer structural support to the membrane but have no other function. Membrane proteins offer structural support to the membrane but have no other function. Both plant and animal cell membranes are considered fluid mosaics.

Answer:

- In water, phospholipids spontaneously arrange into a bilayer

- Steroids in cell membranes allow the membrane to be more fluid

- Phospholipid bilayers surround all eukaryotic cells

- Both plant and animal cell membranes are considered fluid mosaics

Explanation:

All living things (i.e.. both eukaryotic and eukaryotic organisms) are composed of cells, and all cells have cell membranes. In an aqueous environment, phospholipids spontaneously form bilayers: hydrophilic heads of phospholipids face the water environment at the surface of the bilayer, while hydrophobic fatty acid chains are shielded from the water in the interior. Steroids are lipids that intercalate into the bilayer of the cell plasma membrane, reducing the fluidity of the membrane. Integral membrane proteins may have different biological roles. For example, permeases are integral membrane proteins that facilitate the diffusion of certain molecules (e.g., glucose) across the cell membrane by passive transport. Both plant and animal cell membranes are considered fluid mosaics where different types of molecules (e.g., phospholipids, cholesterol, proteins, etc) are constantly moving across the membrane.

I put a picture does anyone know the answer to that

A Phylum is a more broad taxonomic category than an order.
O True
O False

Explain how it is known that the environment changed over time.

Question 10
6.7 pts
Which of the following most likely happens in the cells of a person running a
marathon?
The respiration rate increases to produce more ATP.
The cell division rate increases to produce more muscle fibers
The photosynthesis rate increases to produce more sugars
The replication rate increases to produce more DNA

How many stops can you potentially make on your trip? Why?

please help me im timed and will give brainiest:(​

please help I don't understand ​

maslows theory of self actualization

Which statement correctly describes an interaction between organelles in the model?
A
Letter U and letter S control the collection and release of waste from the cell.
В.
Letter T and letter R store the genetic material necessary for replication of the cell.
ОООО
C
Letter Q and letter S are responsible for creating and delivering nutrients throughout the cell.
D
Letter U and letter R are involved with the processes of transcription and translation for the cell.

Light-skinned people generally have a greater proportion of which pigment in their skin?

Keratin

Pheomelanin

Eumelanin

Carotene

A student prepares a cell homogenate from spinach leaves. She performs a cell fractionation experiment to determine the shortest amount time of centrifugation at 2000xg that will yield the highest percentage of chloroplasts in the pellet fraction. She splits the spinach homogenate into 5 equal parts and centrifuges the parts at 2000xg for 0, 5, 10, 15 or 20 min. She then determines the proportion of chloroplasts in the supernatant and pellet fractions. The controlled variable(s) in the student's experiment is/are:_____.
a. proportion of chloroplasts in each fraction.
b. use of same plant homogenate throughout.
c. time of centrifugation in minutes.
d. g-force of centrifugation.

Select the correct answer.
Why will a decrease in pH of the stomach affect protein digestion?
OA. Decrease in pH of the stomach will distort the structure of peptides in food, which affects the action of the enzyme pepsin.
O B. Decrease in pH of the stomach will distort the active site of the enzyme pepsin, which affects its
action.
O C. Decrease in DH of the stomach will distort the active site of the enzyme lipase, which affects protein digestion. Yes

If a flower is wilting, which structure inside its cells lacks water?


vacuole

cell wall

carpel

chloroplast

why are plastids called kitchen of the cell​

(L1) The plasma membrane of a cell is selectively permeable (or semi-permeable), which means it
A.controls all cellular activities.


B.is responsible for asexual reproduction.
C.allows some materials to pass.

D.has a carbohydrate foundation,

The environmental factors that are important depend on the habitat true or false

What’s the answer to this pls

Darwin noticed that animals on the different islands of the Galapagos appeared to be adapted
to what? *
(10 Points)
O A. differences in their food
O B. differences in their predators
O C. differences in their altitude
D. differences in temperature
WILL GIVE BRAINLIST

How can a hunter help wildlife conservation efforts? A, By making sure to always obey the rules of firearm safety By making sure to always obey the rules of firearm safety B, By always bagging under the daily limit By always bagging under the daily limit C, By donating to conservation organizations, or helping to build habitats for local wildlife By donating to conservation organizations, or helping to build habitats for local wildlife D, By always bagging over the daily limit By always bagging over the daily limit

8. Plant cells have some parts that animal cells do not have. Plant cells have __________, __________, __________.
9. Most of the organelles in plant and animal cells are inside the __________
10. _________ cells have a “box” shape,
11. __________ cells are more round
12. The ____________ in plant cells provide an additional layer outside the cell membrane for support the plant.
13. The cell wall separates the inside of the _________ cell from the environment.
14. __________ in plant cells are responsible for performing the process of photosynthesis. If they stop working, photosynthesis will not be taking place in the plant.
15. Plant cells have a ________________ that stores water, nutrients, food and waste products.
16. The________________ are the organelles that makes proteins.
17. Cells move water and materials through the _____________.

The ability to taste the chemical PTC is determined by a single gene in humans with the ability to taste given by the dominant allele T and the inability to taste by the recessive allele t. Suppose two heterozygous tasters (Tt) have a large family. What is the likelihood that their first child will be a taster

2. A man has type A blood and his wife has type B blood. A physician types the blood of their four children
and finds that each of the children has a different blood type. What are the genotypes of the parents? How
would you explain that all four blood types could be represented by these four children?

5.Write observation and conclusion of each of the following activities​

Leona drew a diagram to compare ginkgoes and conifers.



Which characteristic belongs in the area marked X?

are deciduous
produce cones
look like palm trees
are the largest group

18. Marlon took the microscope and observed a sliced plant leat. He switched it into 100% magnification and saw
a green pigment. In which part of the plant cellis it found?
a nucleus b. mitochondrion G chloroplast d. lysosome​

Which of the following rows in the table best compares the function of a plant's xylem and phloem? I Need help ASAP!

Row 1

Xylem

- transports glucose absorbed by the roots to the rest of the plant


- alive at maturity

Phloem

- transports water and nutrients produced by photosynthesis in the leaves to the rest of the plant


- dead at maturity


Row 2

Xylem

- transports glucose produced by photosynthesis in the leaves to the rest of the plant


- dead at maturity

Phloem

- transports water and nutrients absorbed by the roots to the rest of the plant


- alive at maturity


Row 3

Xylem

- transports water and nutrients absorbed by the roots to the rest of the plant


- dead at maturity

Phloem

- transports glucose made during photosynthesis in the leaves to the rest of the plant


- alive at maturity


Row 4

Xylem

- transports water and nutrients produced by photosynthesis in the leaves to the rest of the plant


- alive at maturity

Phloem

- transports glucose absorbed by the roots to the rest of the plant


- dead at maturity

What are the three stop codons?

The island spotted skunk and the island fox are both predators of the island
deer mouse (the prey). How could these two predators establish different
niches and still prey upon island deer mice? *

A. the island spotted skunk hunts at different times than the island fox
B. the island spotted skunk hunts in the same area as the island fox
C. the island fox eats only cherries instead of deer mice
D. the island deer mice swim to a different island to avoid predators

List 3 ways that microwaves are beneficial to society

We’re you able to place some events within the periodic table with just a single clue