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Elden [556K]
3 years ago
12

Which feature of a cell membrane determines whether molecules can cross the membrane?

Biology
1 answer:
aleksklad [387]3 years ago
3 0

Answer:

my guess is phospholipids

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An original DNA strand has the following base sequence:
SVEN [57.7K]
The base sequence that would be produced through DNA replication would be UGCA. RNA contains three of these bases - (A),(C), and (G) but not (T). Uracil (U) is found in its place and complements adenine (A) instead. I hope my answer has come to your help. God bless and have a nice day ahead!
4 0
3 years ago
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State one factor, other than the tilt of the Earth’s axis, that causes seasons to change on earth.
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Answer:But Earth's distance from the sun doesn't change enough to cause seasonal differences. Instead, our seasons change because Earth tilts on its axis, and the angle of tilt causes the Northern and Southern Hemispheres to trade places throughout the year in receiving the sun's light and warmth most directly.Sep 23, 2019

Explanation:

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3 years ago
What’s vegetative reproduction (biology)<br><br> give description and example.
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Vegetative reproduction is a mode of asexual reproduction naturally occurring in plants. In this process. only one of the parent is involved and the offspring is genetically identical to the parent and no sharing of DNA takes place.

Examples are:  Onion, rhizome (ginger) and daffodil

Explanation:

There are meristem tissues found in the stem, root and leaves. These are undifferentiated cells and have tendency of dividing. This tissue gives rise to organs of the plant and responsible for its growth.

Natural vegetative propagation happens when an axillary bud grows into a lateral shoot and develops adventitious roots consequently forming a new plant.

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4 0
3 years ago
Which of the following is false of the integumentary system?
Marizza181 [45]

Answer:

Hey there the answer would be D. Keratin is the pigment responsable for skin color.

Explanation:

A. The top layer of the epidermus is made of dead skin cells. The inner player has to be constatnly making more cells

B.The body procudes more melanin with stronger sunlight exposure. This results because the UV of the sun causes T-T dimers which is a type of DNA damage.

C. UV causes genetic mutation which can result in cancer if not fixed by the cell

D.Keratin is found in the epidermis and with thick layer of skin found in the hands and feet. Melainin is responsible for skin color.

6 0
3 years ago
Which statement about infiltration is TRUE? Group of answer choices groundwater is an unsafe (dangerous) source of water not mea
weeeeeb [17]

Answer: Groundwater can remain in subsurface storage for long periods of time.

Explanation:

The ground water is the water reservoir that gets accumulated beneath the earth crust due to the accumulation of water that seeps into the soil and rock due to the absorption by water bodies river, lakes, ponds, oceans, and rain or any kind of precipitation. The groundwater remains as a subsurface storage of water until the site of groundwater is searched and water is extracted from it for household, agricultural or industrial purposes.

8 0
3 years ago
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