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Novay_Z [31]
3 years ago
14

What is a base?

Biology
2 answers:
koban [17]3 years ago
8 0
A base is a substance that is alkaline (ph value lower than 7)
galina1969 [7]3 years ago
5 0
The correct answer is A. a substance that is alkaline
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In an ecosystem, every food chain begins with organisms that can create organic molecules from inorganic molecules; most frequen
Alecsey [184]
If I am not wrong, I believe the answer is Producers. The reason as to why I say that producers is the answer is because in every food chain, there needs to be a base. That base is what provides the starting energy that will later on move up in the food chain.
8 0
3 years ago
I need help please!
wolverine [178]

Answer:

50%

Explanation:

So the cross is hh x Hh

Making a punnet square would get Hh,hh,Hh,hh

The percent of babies that will have Hh is 50%

4 0
3 years ago
Three months after fertilization and development of a placenta around the developing fetus, the corpus luteum regresses and form
Serjik [45]
<span>Three months after fertilization and development of a placenta around the developing fetus, the corpus luteum regresses and forms the corpus albicans.</span> Formed placenta takes over progesterone production (which was the role of corpus luteum) and the corpus luteum degrades into a corpus albicans. The corpus luteum is being broken down by macrophages, in a process called luteolysis. The remains of the corpus albicans may persist as a scar on the ovary.
3 0
3 years ago
Amino acids are usually taken up into animal cells using a coupled transport system in the plasma membrane. Clearly stated in th
exis [7]

Answer:

It requires energy

Explanation:

In the coupled transport system, coupled carriers couple the inward transport of one solute across the membrane to the outward transport of other solutes across the membrane. The tight bonding that occurs between the transport of two solutes allows these carriers to utilize the energy stored in one solute, usually an ion, to facilitate transport of the other. With this way, the free energy released during the movement of an ion down an electrochemical gradient is utilized as the driving force to transport other solutes inwards, against their electrochemical gradient.

3 0
3 years ago
Complementary strand of DNA?<br> DNA Strand 1: AATCGGTAC
lesantik [10]

Answer:

TTAGCCATG

Explanation:

Deoxyribonucleic acid (DNA) is a double helix molecule made up of two complementary polynucleotide strands oriented antiparallel to each other. Each nucleotide in both DNA strands is composed of a five-carbon sugar (deoxyribose), a phosphate group and a nitrogenous base. In DNA, there are four types of nitrogenous bases: Thymine, Guanine, Adenine and Cytosine (in RNA, Uracil replace Thymine). According to the base-pairing rules, Adenine always pairs with Thymine through two hydrogen bonds, whereas Guanine always pairs with Cytosine through three hydrogen bonds.

8 0
3 years ago
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