BIOLOGY HIGH SCHOOL

The outer layer of a cell that acts as a gatekeeper to a cell is the _____.

Answers

Answer 1
Answer:

Answer:

The outer layer of a cell that acts as a gatekeeper to a cell is the Cell Membrane or Plasma Membrane.

The cell membrane made up of mostly phospholipids and proteins and is known as selectively permeable membrane as it allows the entry of some selective molecules into it.

The plasma membrane is the layer present between  the cell and its external  environment. As the gatekeeper takes care of entry, cell membrane also regulates the molecules that enters and exits the cell from external environment.

Cells membrane helps in maintaining appropriate amount of molecules to function inside them.

Hence, the correct option is Cell Membrane.
Answer 2
Answer: Got this right on my test. plasma membrane

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What are the two phases of speciation?
Tissues are made of a grouping of cells. a. True b. False

Leone Lattes found a way of using a comparison microscope to improve this technique to better match bullets. a. True
b. False

Answers

i think the answer is true

Germination isA. is unaffected by temperature or any other conditions within the environment
B. ends with dormancy.
C. is the same process for both monocots and dicots.
D. is the process that occurs when the seed swells and breaks and growth occurs.

Answers

D. Is the process that occurs when the seed swells and breaks and growth occurs.

Hope this helps! : )

Answer : D


I  hope that's help ! its not a guest

Joel is comparing two slides showing chromosomes in a sperm cell and a skin cell of a dog. He finds that the sperm cell has 39 chromosomes. How many chromosomes can he expect in the skin cell?

Answers

Since a sperm cell contains half the number of chromosomes (a result of meiotic cellular division) as the body cells, the regular, diploid, cells would contain 78 chromosomes. You simply double the haploid to find the diploid or divide the diploid in half to find the haploid.

Answer:

B) 78 Chromosomes

Explanation:

Double of chromosomes in sperm cells.

Which elements are the elements that form the basis of all living thingsfrom the most primitive bacteria to the largest creatures on earth? *

A. Helium, hydrogen, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call
them, HHNOPS

B. Halogen, hydrogen, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call
them, HHNOPS

C. Gold, hydrogen, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call them,
GHNOPS

D. Carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call
them, CHNOPS

E. Carbon, helium, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call them,
CHNOPS

F. Silver, hydrogen, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call them,
SHNOPS

Answers

Answer:

E. Carbon, helium, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call them,

CHNOPS.

or

D. Carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur, or, as some prefer to call

them, CHNOPS

According to erikson, development is best reflected in the relationship with a caregiver intelligence test scores mastery of specific cognitive skills resolution of psychosocial tasks

Answers

According to erikson, development is best reflected in  resolution of psycho-social tasks. Erikson’s psychosocial theory of development considers the impact of external factors, parents and society on personality development from childhood to adulthood. According to Erikson’s theory, every person must pass through a series of eight interrelated stages over the entire life cycle

Answer:

resolution of psychosocial tasks is the answer

Explanation:

Which animal uses its skin for respiration? A. pelican B. lion C. toad D. mackerel

Answers


I think it's C. toad
It's definitely a toad they have interesting lungs
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What do you think classifies an organism as living ?
Which statement below BEST summarizes the role of the DNA molecule in cells?A) guides cell division B) protects cells from infection C) provides the instructions for making proteins D) regulates the chemical processes that provide the cell with energy